diff options
Diffstat (limited to 'drivers/usb/musb')
28 files changed, 2853 insertions, 1304 deletions
diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig index 23a0b7f0892..06cc5d6ea68 100644 --- a/drivers/usb/musb/Kconfig +++ b/drivers/usb/musb/Kconfig @@ -6,12 +6,7 @@ # (M)HDRC = (Multipoint) Highspeed Dual-Role Controller config USB_MUSB_HDRC tristate 'Inventra Highspeed Dual Role Controller (TI, ADI, ...)' - depends on USB && USB_GADGET - select NOP_USB_XCEIV if (ARCH_DAVINCI || MACH_OMAP3EVM || BLACKFIN) - select NOP_USB_XCEIV if (SOC_TI81XX || SOC_AM33XX) - select TWL4030_USB if MACH_OMAP_3430SDP - select TWL6030_USB if MACH_OMAP_4430SDP || MACH_OMAP4_PANDA - select USB_OTG_UTILS + depends on (USB || USB_GADGET) help Say Y here if your system has a dual role high speed USB controller based on the Mentor Graphics silicon IP. Then @@ -33,22 +28,56 @@ config USB_MUSB_HDRC if USB_MUSB_HDRC choice + bool "MUSB Mode Selection" + default USB_MUSB_DUAL_ROLE if (USB && USB_GADGET) + default USB_MUSB_HOST if (USB && !USB_GADGET) + default USB_MUSB_GADGET if (!USB && USB_GADGET) + +config USB_MUSB_HOST + bool "Host only mode" + depends on USB=y || USB=USB_MUSB_HDRC + help + Select this when you want to use MUSB in host mode only, + thereby the gadget feature will be regressed. + +config USB_MUSB_GADGET + bool "Gadget only mode" + depends on USB_GADGET=y || USB_GADGET=USB_MUSB_HDRC + depends on HAS_DMA + help + Select this when you want to use MUSB in gadget mode only, + thereby the host feature will be regressed. + +config USB_MUSB_DUAL_ROLE + bool "Dual Role mode" + depends on ((USB=y || USB=USB_MUSB_HDRC) && (USB_GADGET=y || USB_GADGET=USB_MUSB_HDRC)) + depends on HAS_DMA + help + This is the default mode of working of MUSB controller where + both host and gadget features are enabled. + +endchoice + +choice prompt "Platform Glue Layer" config USB_MUSB_DAVINCI tristate "DaVinci" depends on ARCH_DAVINCI_DMx + depends on BROKEN config USB_MUSB_DA8XX tristate "DA8xx/OMAP-L1x" depends on ARCH_DAVINCI_DA8XX + depends on BROKEN config USB_MUSB_TUSB6010 tristate "TUSB6010" config USB_MUSB_OMAP2PLUS tristate "OMAP2430 and onwards" - depends on ARCH_OMAP2PLUS + depends on ARCH_OMAP2PLUS && USB + select GENERIC_PHY config USB_MUSB_AM35X tristate "AM35x" @@ -56,20 +85,30 @@ config USB_MUSB_AM35X config USB_MUSB_DSPS tristate "TI DSPS platforms" - depends on SOC_TI81XX || SOC_AM33XX + select USB_MUSB_AM335X_CHILD + depends on OF_IRQ config USB_MUSB_BLACKFIN tristate "Blackfin" depends on (BF54x && !BF544) || (BF52x && ! BF522 && !BF523) config USB_MUSB_UX500 - tristate "U8500 and U5500" - depends on (ARCH_U8500 && AB8500_USB) + tristate "Ux500 platforms" + +config USB_MUSB_JZ4740 + tristate "JZ4740" + depends on MACH_JZ4740 || COMPILE_TEST + depends on USB_MUSB_GADGET + depends on USB_OTG_BLACKLIST_HUB endchoice +config USB_MUSB_AM335X_CHILD + tristate + choice prompt 'MUSB DMA mode' + default MUSB_PIO_ONLY if ARCH_MULTIPLATFORM || USB_MUSB_JZ4740 default USB_UX500_DMA if USB_MUSB_UX500 default USB_INVENTRA_DMA if USB_MUSB_OMAP2PLUS || USB_MUSB_BLACKFIN default USB_TI_CPPI_DMA if USB_MUSB_DAVINCI @@ -82,7 +121,7 @@ choice allow using DMA on multiplatform kernels. config USB_UX500_DMA - bool 'ST Ericsson U8500 and U5500' + bool 'ST Ericsson Ux500' depends on USB_MUSB_UX500 help Enable DMA transfers on UX500 platforms. @@ -99,9 +138,14 @@ config USB_TI_CPPI_DMA help Enable DMA transfers when TI CPPI DMA is available. +config USB_TI_CPPI41_DMA + bool 'TI CPPI 4.1 (AM335x)' + depends on ARCH_OMAP + select TI_CPPI41 + config USB_TUSB_OMAP_DMA bool 'TUSB 6010' - depends on USB_MUSB_TUSB6010 + depends on USB_MUSB_TUSB6010 = USB_MUSB_HDRC # both built-in or both modules depends on ARCH_OMAP help Enable DMA transfers on TUSB 6010 when OMAP DMA is available. diff --git a/drivers/usb/musb/Makefile b/drivers/usb/musb/Makefile index 3b858715b5e..ba495018b41 100644 --- a/drivers/usb/musb/Makefile +++ b/drivers/usb/musb/Makefile @@ -6,8 +6,8 @@ obj-$(CONFIG_USB_MUSB_HDRC) += musb_hdrc.o musb_hdrc-y := musb_core.o -musb_hdrc-y += musb_gadget_ep0.o musb_gadget.o -musb_hdrc-y += musb_virthub.o musb_host.o +musb_hdrc-$(CONFIG_USB_MUSB_HOST)$(CONFIG_USB_MUSB_DUAL_ROLE) += musb_virthub.o musb_host.o +musb_hdrc-$(CONFIG_USB_MUSB_GADGET)$(CONFIG_USB_MUSB_DUAL_ROLE) += musb_gadget_ep0.o musb_gadget.o musb_hdrc-$(CONFIG_DEBUG_FS) += musb_debugfs.o # Hardware Glue Layer @@ -19,6 +19,10 @@ obj-$(CONFIG_USB_MUSB_DAVINCI) += davinci.o obj-$(CONFIG_USB_MUSB_DA8XX) += da8xx.o obj-$(CONFIG_USB_MUSB_BLACKFIN) += blackfin.o obj-$(CONFIG_USB_MUSB_UX500) += ux500.o +obj-$(CONFIG_USB_MUSB_JZ4740) += jz4740.o + + +obj-$(CONFIG_USB_MUSB_AM335X_CHILD) += musb_am335x.o # the kconfig must guarantee that only one of the # possible I/O schemes will be enabled at a time ... @@ -29,3 +33,4 @@ musb_hdrc-$(CONFIG_USB_INVENTRA_DMA) += musbhsdma.o musb_hdrc-$(CONFIG_USB_TI_CPPI_DMA) += cppi_dma.o musb_hdrc-$(CONFIG_USB_TUSB_OMAP_DMA) += tusb6010_omap.o musb_hdrc-$(CONFIG_USB_UX500_DMA) += ux500_dma.o +musb_hdrc-$(CONFIG_USB_TI_CPPI41_DMA) += musb_cppi41.o diff --git a/drivers/usb/musb/am35x.c b/drivers/usb/musb/am35x.c index c107d7cdfa6..0a34dd85955 100644 --- a/drivers/usb/musb/am35x.c +++ b/drivers/usb/musb/am35x.c @@ -26,14 +26,13 @@ * */ -#include <linux/init.h> #include <linux/module.h> #include <linux/clk.h> #include <linux/err.h> #include <linux/io.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> -#include <linux/usb/nop-usb-xceiv.h> +#include <linux/usb/usb_phy_generic.h> #include <linux/platform_data/usb-omap.h> #include "musb_core.h" @@ -86,10 +85,10 @@ struct am35x_glue { struct device *dev; struct platform_device *musb; + struct platform_device *phy; struct clk *phy_clk; struct clk *clk; }; -#define glue_to_musb(g) platform_get_drvdata(g->musb) /* * am35x_musb_enable - enable interrupts @@ -149,7 +148,7 @@ static void otg_timer(unsigned long _musb) */ devctl = musb_readb(mregs, MUSB_DEVCTL); dev_dbg(musb->controller, "Poll devctl %02x (%s)\n", devctl, - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); spin_lock_irqsave(&musb->lock, flags); switch (musb->xceiv->state) { @@ -195,7 +194,7 @@ static void am35x_musb_try_idle(struct musb *musb, unsigned long timeout) if (musb->is_active || (musb->a_wait_bcon == 0 && musb->xceiv->state == OTG_STATE_A_WAIT_BCON)) { dev_dbg(musb->controller, "%s active, deleting timer\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); del_timer(&otg_workaround); last_timer = jiffies; return; @@ -208,7 +207,7 @@ static void am35x_musb_try_idle(struct musb *musb, unsigned long timeout) last_timer = timeout; dev_dbg(musb->controller, "%s inactive, starting idle timer for %u ms\n", - otg_state_string(musb->xceiv->state), + usb_otg_state_string(musb->xceiv->state), jiffies_to_msecs(timeout - jiffies)); mod_timer(&otg_workaround, timeout); } @@ -218,7 +217,7 @@ static irqreturn_t am35x_musb_interrupt(int irq, void *hci) struct musb *musb = hci; void __iomem *reg_base = musb->ctrl_base; struct device *dev = musb->controller; - struct musb_hdrc_platform_data *plat = dev->platform_data; + struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); struct omap_musb_board_data *data = plat->board_data; struct usb_otg *otg = musb->xceiv->otg; unsigned long flags; @@ -298,7 +297,7 @@ static irqreturn_t am35x_musb_interrupt(int irq, void *hci) /* NOTE: this must complete power-on within 100 ms. */ dev_dbg(musb->controller, "VBUS %s (%s)%s, devctl %02x\n", drvvbus ? "on" : "off", - otg_state_string(musb->xceiv->state), + usb_otg_state_string(musb->xceiv->state), err ? " ERROR" : "", devctl); ret = IRQ_HANDLED; @@ -335,7 +334,7 @@ eoi: static int am35x_musb_set_mode(struct musb *musb, u8 musb_mode) { struct device *dev = musb->controller; - struct musb_hdrc_platform_data *plat = dev->platform_data; + struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); struct omap_musb_board_data *data = plat->board_data; int retval = 0; @@ -350,7 +349,7 @@ static int am35x_musb_set_mode(struct musb *musb, u8 musb_mode) static int am35x_musb_init(struct musb *musb) { struct device *dev = musb->controller; - struct musb_hdrc_platform_data *plat = dev->platform_data; + struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); struct omap_musb_board_data *data = plat->board_data; void __iomem *reg_base = musb->ctrl_base; u32 rev; @@ -362,10 +361,9 @@ static int am35x_musb_init(struct musb *musb) if (!rev) return -ENODEV; - usb_nop_xceiv_register(); musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); if (IS_ERR_OR_NULL(musb->xceiv)) - return -ENODEV; + return -EPROBE_DEFER; setup_timer(&otg_workaround, otg_timer, (unsigned long) musb); @@ -394,7 +392,7 @@ static int am35x_musb_init(struct musb *musb) static int am35x_musb_exit(struct musb *musb) { struct device *dev = musb->controller; - struct musb_hdrc_platform_data *plat = dev->platform_data; + struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); struct omap_musb_board_data *data = plat->board_data; del_timer_sync(&otg_workaround); @@ -404,7 +402,6 @@ static int am35x_musb_exit(struct musb *musb) data->set_phy_power(0); usb_put_phy(musb->xceiv); - usb_nop_xceiv_unregister(); return 0; } @@ -452,14 +449,18 @@ static const struct musb_platform_ops am35x_ops = { .set_vbus = am35x_musb_set_vbus, }; -static u64 am35x_dmamask = DMA_BIT_MASK(32); +static const struct platform_device_info am35x_dev_info = { + .name = "musb-hdrc", + .id = PLATFORM_DEVID_AUTO, + .dma_mask = DMA_BIT_MASK(32), +}; static int am35x_probe(struct platform_device *pdev) { - struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; + struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); struct platform_device *musb; struct am35x_glue *glue; - + struct platform_device_info pinfo; struct clk *phy_clk; struct clk *clk; @@ -471,12 +472,6 @@ static int am35x_probe(struct platform_device *pdev) goto err0; } - musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); - if (!musb) { - dev_err(&pdev->dev, "failed to allocate musb device\n"); - goto err1; - } - phy_clk = clk_get(&pdev->dev, "fck"); if (IS_ERR(phy_clk)) { dev_err(&pdev->dev, "failed to get PHY clock\n"); @@ -503,40 +498,36 @@ static int am35x_probe(struct platform_device *pdev) goto err6; } - musb->dev.parent = &pdev->dev; - musb->dev.dma_mask = &am35x_dmamask; - musb->dev.coherent_dma_mask = am35x_dmamask; - glue->dev = &pdev->dev; - glue->musb = musb; glue->phy_clk = phy_clk; glue->clk = clk; pdata->platform_ops = &am35x_ops; - platform_set_drvdata(pdev, glue); - - ret = platform_device_add_resources(musb, pdev->resource, - pdev->num_resources); - if (ret) { - dev_err(&pdev->dev, "failed to add resources\n"); + glue->phy = usb_phy_generic_register(); + if (IS_ERR(glue->phy)) goto err7; - } - - ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); - if (ret) { - dev_err(&pdev->dev, "failed to add platform_data\n"); - goto err7; - } + platform_set_drvdata(pdev, glue); - ret = platform_device_add(musb); - if (ret) { - dev_err(&pdev->dev, "failed to register musb device\n"); - goto err7; + pinfo = am35x_dev_info; + pinfo.parent = &pdev->dev; + pinfo.res = pdev->resource; + pinfo.num_res = pdev->num_resources; + pinfo.data = pdata; + pinfo.size_data = sizeof(*pdata); + + glue->musb = musb = platform_device_register_full(&pinfo); + if (IS_ERR(musb)) { + ret = PTR_ERR(musb); + dev_err(&pdev->dev, "failed to register musb device: %d\n", ret); + goto err8; } return 0; +err8: + usb_phy_generic_unregister(glue->phy); + err7: clk_disable(clk); @@ -550,9 +541,6 @@ err4: clk_put(phy_clk); err3: - platform_device_put(musb); - -err1: kfree(glue); err0: @@ -564,6 +552,7 @@ static int am35x_remove(struct platform_device *pdev) struct am35x_glue *glue = platform_get_drvdata(pdev); platform_device_unregister(glue->musb); + usb_phy_generic_unregister(glue->phy); clk_disable(glue->clk); clk_disable(glue->phy_clk); clk_put(glue->clk); @@ -577,7 +566,7 @@ static int am35x_remove(struct platform_device *pdev) static int am35x_suspend(struct device *dev) { struct am35x_glue *glue = dev_get_drvdata(dev); - struct musb_hdrc_platform_data *plat = dev->platform_data; + struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); struct omap_musb_board_data *data = plat->board_data; /* Shutdown the on-chip PHY and its PLL. */ @@ -593,7 +582,7 @@ static int am35x_suspend(struct device *dev) static int am35x_resume(struct device *dev) { struct am35x_glue *glue = dev_get_drvdata(dev); - struct musb_hdrc_platform_data *plat = dev->platform_data; + struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); struct omap_musb_board_data *data = plat->board_data; int ret; @@ -615,23 +604,16 @@ static int am35x_resume(struct device *dev) return 0; } - -static struct dev_pm_ops am35x_pm_ops = { - .suspend = am35x_suspend, - .resume = am35x_resume, -}; - -#define DEV_PM_OPS &am35x_pm_ops -#else -#define DEV_PM_OPS NULL #endif +static SIMPLE_DEV_PM_OPS(am35x_pm_ops, am35x_suspend, am35x_resume); + static struct platform_driver am35x_driver = { .probe = am35x_probe, .remove = am35x_remove, .driver = { .name = "musb-am35x", - .pm = DEV_PM_OPS, + .pm = &am35x_pm_ops, }, }; diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c index 14dab9f9b3d..d40d5f0b552 100644 --- a/drivers/usb/musb/blackfin.c +++ b/drivers/usb/musb/blackfin.c @@ -11,7 +11,6 @@ #include <linux/module.h> #include <linux/kernel.h> #include <linux/sched.h> -#include <linux/init.h> #include <linux/list.h> #include <linux/gpio.h> #include <linux/io.h> @@ -19,7 +18,7 @@ #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/prefetch.h> -#include <linux/usb/nop-usb-xceiv.h> +#include <linux/usb/usb_phy_generic.h> #include <asm/cacheflush.h> @@ -30,6 +29,7 @@ struct bfin_glue { struct device *dev; struct platform_device *musb; + struct platform_device *phy; }; #define glue_to_musb(g) platform_get_drvdata(g->musb) @@ -77,7 +77,7 @@ void musb_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *src) bfin_write16(USB_DMA_REG(epnum, USB_DMAx_CTRL), dma_reg); SSYNC(); - /* Wait for compelete */ + /* Wait for complete */ while (!(bfin_read_USB_DMA_INTERRUPT() & (1 << epnum))) cpu_relax(); @@ -131,7 +131,7 @@ void musb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst) bfin_write16(USB_DMA_REG(epnum, USB_DMAx_CTRL), dma_reg); SSYNC(); - /* Wait for compelete */ + /* Wait for complete */ while (!(bfin_read_USB_DMA_INTERRUPT() & (1 << epnum))) cpu_relax(); @@ -280,13 +280,13 @@ static void musb_conn_timer_handler(unsigned long _musb) break; default: dev_dbg(musb->controller, "%s state not handled\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); break; } spin_unlock_irqrestore(&musb->lock, flags); dev_dbg(musb->controller, "state is %s\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); } static void bfin_musb_enable(struct musb *musb) @@ -307,7 +307,7 @@ static void bfin_musb_set_vbus(struct musb *musb, int is_on) dev_dbg(musb->controller, "VBUS %s, devctl %02x " /* otg %3x conf %08x prcm %08x */ "\n", - otg_state_string(musb->xceiv->state), + usb_otg_state_string(musb->xceiv->state), musb_readb(musb->mregs, MUSB_DEVCTL)); } @@ -402,11 +402,10 @@ static int bfin_musb_init(struct musb *musb) } gpio_direction_output(musb->config->gpio_vrsel, 0); - usb_nop_xceiv_register(); musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); if (IS_ERR_OR_NULL(musb->xceiv)) { gpio_free(musb->config->gpio_vrsel); - return -ENODEV; + return -EPROBE_DEFER; } bfin_musb_reg_init(musb); @@ -425,9 +424,8 @@ static int bfin_musb_init(struct musb *musb) static int bfin_musb_exit(struct musb *musb) { gpio_free(musb->config->gpio_vrsel); - usb_put_phy(musb->xceiv); - usb_nop_xceiv_unregister(); + return 0; } @@ -450,7 +448,8 @@ static u64 bfin_dmamask = DMA_BIT_MASK(32); static int bfin_probe(struct platform_device *pdev) { - struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; + struct resource musb_resources[2]; + struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); struct platform_device *musb; struct bfin_glue *glue; @@ -477,10 +476,26 @@ static int bfin_probe(struct platform_device *pdev) pdata->platform_ops = &bfin_ops; + glue->phy = usb_phy_generic_register(); + if (IS_ERR(glue->phy)) + goto err2; platform_set_drvdata(pdev, glue); - ret = platform_device_add_resources(musb, pdev->resource, - pdev->num_resources); + memset(musb_resources, 0x00, sizeof(*musb_resources) * + ARRAY_SIZE(musb_resources)); + + musb_resources[0].name = pdev->resource[0].name; + musb_resources[0].start = pdev->resource[0].start; + musb_resources[0].end = pdev->resource[0].end; + musb_resources[0].flags = pdev->resource[0].flags; + + musb_resources[1].name = pdev->resource[1].name; + musb_resources[1].start = pdev->resource[1].start; + musb_resources[1].end = pdev->resource[1].end; + musb_resources[1].flags = pdev->resource[1].flags; + + ret = platform_device_add_resources(musb, musb_resources, + ARRAY_SIZE(musb_resources)); if (ret) { dev_err(&pdev->dev, "failed to add resources\n"); goto err3; @@ -501,6 +516,9 @@ static int bfin_probe(struct platform_device *pdev) return 0; err3: + usb_phy_generic_unregister(glue->phy); + +err2: platform_device_put(musb); err1: @@ -515,6 +533,7 @@ static int bfin_remove(struct platform_device *pdev) struct bfin_glue *glue = platform_get_drvdata(pdev); platform_device_unregister(glue->musb); + usb_phy_generic_unregister(glue->phy); kfree(glue); return 0; @@ -547,23 +566,16 @@ static int bfin_resume(struct device *dev) return 0; } - -static struct dev_pm_ops bfin_pm_ops = { - .suspend = bfin_suspend, - .resume = bfin_resume, -}; - -#define DEV_PM_OPS &bfin_pm_ops -#else -#define DEV_PM_OPS NULL #endif +static SIMPLE_DEV_PM_OPS(bfin_pm_ops, bfin_suspend, bfin_resume); + static struct platform_driver bfin_driver = { .probe = bfin_probe, .remove = __exit_p(bfin_remove), .driver = { .name = "musb-blackfin", - .pm = DEV_PM_OPS, + .pm = &bfin_pm_ops, }, }; diff --git a/drivers/usb/musb/cppi_dma.c b/drivers/usb/musb/cppi_dma.c index f522000e8f0..904fb85d85a 100644 --- a/drivers/usb/musb/cppi_dma.c +++ b/drivers/usb/musb/cppi_dma.c @@ -150,14 +150,11 @@ static void cppi_pool_free(struct cppi_channel *c) c->last_processed = NULL; } -static int cppi_controller_start(struct dma_controller *c) +static void cppi_controller_start(struct cppi *controller) { - struct cppi *controller; void __iomem *tibase; int i; - controller = container_of(c, struct cppi, controller); - /* do whatever is necessary to start controller */ for (i = 0; i < ARRAY_SIZE(controller->tx); i++) { controller->tx[i].transmit = true; @@ -212,8 +209,6 @@ static int cppi_controller_start(struct dma_controller *c) /* disable RNDIS mode, also host rx RNDIS autorequest */ musb_writel(tibase, DAVINCI_RNDIS_REG, 0); musb_writel(tibase, DAVINCI_AUTOREQ_REG, 0); - - return 0; } /* @@ -222,14 +217,12 @@ static int cppi_controller_start(struct dma_controller *c) * De-Init the DMA controller as necessary. */ -static int cppi_controller_stop(struct dma_controller *c) +static void cppi_controller_stop(struct cppi *controller) { - struct cppi *controller; void __iomem *tibase; int i; struct musb *musb; - controller = container_of(c, struct cppi, controller); musb = controller->musb; tibase = controller->tibase; @@ -255,8 +248,6 @@ static int cppi_controller_stop(struct dma_controller *c) /*disable tx/rx cppi */ musb_writel(tibase, DAVINCI_TXCPPI_CTRL_REG, DAVINCI_DMA_CTRL_DISABLE); musb_writel(tibase, DAVINCI_RXCPPI_CTRL_REG, DAVINCI_DMA_CTRL_DISABLE); - - return 0; } /* While dma channel is allocated, we only want the core irqs active @@ -435,7 +426,6 @@ cppi_rndis_update(struct cppi_channel *c, int is_rx, } } -#ifdef CONFIG_USB_MUSB_DEBUG static void cppi_dump_rxbd(const char *tag, struct cppi_descriptor *bd) { pr_debug("RXBD/%s %08x: " @@ -444,21 +434,16 @@ static void cppi_dump_rxbd(const char *tag, struct cppi_descriptor *bd) bd->hw_next, bd->hw_bufp, bd->hw_off_len, bd->hw_options); } -#endif static void cppi_dump_rxq(int level, const char *tag, struct cppi_channel *rx) { -#ifdef CONFIG_USB_MUSB_DEBUG struct cppi_descriptor *bd; - if (!_dbg_level(level)) - return; cppi_dump_rx(level, rx, tag); if (rx->last_processed) cppi_dump_rxbd("last", rx->last_processed); for (bd = rx->head; bd; bd = bd->next) cppi_dump_rxbd("active", bd); -#endif } @@ -784,6 +769,7 @@ cppi_next_rx_segment(struct musb *musb, struct cppi_channel *rx, int onepacket) void __iomem *tibase = musb->ctrl_base; int is_rndis = 0; struct cppi_rx_stateram __iomem *rx_ram = rx->state_ram; + struct cppi_descriptor *d; if (onepacket) { /* almost every USB driver, host or peripheral side */ @@ -897,14 +883,8 @@ cppi_next_rx_segment(struct musb *musb, struct cppi_channel *rx, int onepacket) bd->hw_options |= CPPI_SOP_SET; tail->hw_options |= CPPI_EOP_SET; -#ifdef CONFIG_USB_MUSB_DEBUG - if (_dbg_level(5)) { - struct cppi_descriptor *d; - - for (d = rx->head; d; d = d->next) - cppi_dump_rxbd("S", d); - } -#endif + for (d = rx->head; d; d = d->next) + cppi_dump_rxbd("S", d); /* in case the preceding transfer left some state... */ tail = rx->last_processed; @@ -1332,8 +1312,6 @@ struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *mr controller->tibase = mregs - DAVINCI_BASE_OFFSET; controller->musb = musb; - controller->controller.start = cppi_controller_start; - controller->controller.stop = cppi_controller_stop; controller->controller.channel_alloc = cppi_channel_allocate; controller->controller.channel_release = cppi_channel_release; controller->controller.channel_program = cppi_channel_program; @@ -1362,6 +1340,7 @@ struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *mr controller->irq = irq; } + cppi_controller_start(controller); return &controller->controller; } @@ -1374,6 +1353,8 @@ void dma_controller_destroy(struct dma_controller *c) cppi = container_of(c, struct cppi, controller); + cppi_controller_stop(cppi); + if (cppi->irq) free_irq(cppi->irq, cppi->musb); diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c index 97996af2646..058775e647a 100644 --- a/drivers/usb/musb/da8xx.c +++ b/drivers/usb/musb/da8xx.c @@ -26,14 +26,13 @@ * */ -#include <linux/init.h> #include <linux/module.h> #include <linux/clk.h> #include <linux/err.h> #include <linux/io.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> -#include <linux/usb/nop-usb-xceiv.h> +#include <linux/usb/usb_phy_generic.h> #include <mach/da8xx.h> #include <linux/platform_data/usb-davinci.h> @@ -86,6 +85,7 @@ struct da8xx_glue { struct device *dev; struct platform_device *musb; + struct platform_device *phy; struct clk *clk; }; @@ -198,7 +198,7 @@ static void otg_timer(unsigned long _musb) */ devctl = musb_readb(mregs, MUSB_DEVCTL); dev_dbg(musb->controller, "Poll devctl %02x (%s)\n", devctl, - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); spin_lock_irqsave(&musb->lock, flags); switch (musb->xceiv->state) { @@ -267,7 +267,7 @@ static void da8xx_musb_try_idle(struct musb *musb, unsigned long timeout) if (musb->is_active || (musb->a_wait_bcon == 0 && musb->xceiv->state == OTG_STATE_A_WAIT_BCON)) { dev_dbg(musb->controller, "%s active, deleting timer\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); del_timer(&otg_workaround); last_timer = jiffies; return; @@ -280,7 +280,7 @@ static void da8xx_musb_try_idle(struct musb *musb, unsigned long timeout) last_timer = timeout; dev_dbg(musb->controller, "%s inactive, starting idle timer for %u ms\n", - otg_state_string(musb->xceiv->state), + usb_otg_state_string(musb->xceiv->state), jiffies_to_msecs(timeout - jiffies)); mod_timer(&otg_workaround, timeout); } @@ -327,7 +327,7 @@ static irqreturn_t da8xx_musb_interrupt(int irq, void *hci) u8 devctl = musb_readb(mregs, MUSB_DEVCTL); int err; - err = musb->int_usb & USB_INTR_VBUSERROR; + err = musb->int_usb & MUSB_INTR_VBUSERROR; if (err) { /* * The Mentor core doesn't debounce VBUS as needed @@ -360,7 +360,7 @@ static irqreturn_t da8xx_musb_interrupt(int irq, void *hci) dev_dbg(musb->controller, "VBUS %s (%s)%s, devctl %02x\n", drvvbus ? "on" : "off", - otg_state_string(musb->xceiv->state), + usb_otg_state_string(musb->xceiv->state), err ? " ERROR" : "", devctl); ret = IRQ_HANDLED; @@ -410,6 +410,7 @@ static int da8xx_musb_init(struct musb *musb) { void __iomem *reg_base = musb->ctrl_base; u32 rev; + int ret = -ENODEV; musb->mregs += DA8XX_MENTOR_CORE_OFFSET; @@ -418,10 +419,11 @@ static int da8xx_musb_init(struct musb *musb) if (!rev) goto fail; - usb_nop_xceiv_register(); musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); - if (IS_ERR_OR_NULL(musb->xceiv)) + if (IS_ERR_OR_NULL(musb->xceiv)) { + ret = -EPROBE_DEFER; goto fail; + } setup_timer(&otg_workaround, otg_timer, (unsigned long)musb); @@ -441,7 +443,7 @@ static int da8xx_musb_init(struct musb *musb) musb->isr = da8xx_musb_interrupt; return 0; fail: - return -ENODEV; + return ret; } static int da8xx_musb_exit(struct musb *musb) @@ -451,7 +453,6 @@ static int da8xx_musb_exit(struct musb *musb) phy_off(); usb_put_phy(musb->xceiv); - usb_nop_xceiv_unregister(); return 0; } @@ -469,14 +470,19 @@ static const struct musb_platform_ops da8xx_ops = { .set_vbus = da8xx_musb_set_vbus, }; -static u64 da8xx_dmamask = DMA_BIT_MASK(32); +static const struct platform_device_info da8xx_dev_info = { + .name = "musb-hdrc", + .id = PLATFORM_DEVID_AUTO, + .dma_mask = DMA_BIT_MASK(32), +}; static int da8xx_probe(struct platform_device *pdev) { - struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; + struct resource musb_resources[2]; + struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); struct platform_device *musb; struct da8xx_glue *glue; - + struct platform_device_info pinfo; struct clk *clk; int ret = -ENOMEM; @@ -487,12 +493,6 @@ static int da8xx_probe(struct platform_device *pdev) goto err0; } - musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); - if (!musb) { - dev_err(&pdev->dev, "failed to allocate musb device\n"); - goto err1; - } - clk = clk_get(&pdev->dev, "usb20"); if (IS_ERR(clk)) { dev_err(&pdev->dev, "failed to get clock\n"); @@ -506,39 +506,50 @@ static int da8xx_probe(struct platform_device *pdev) goto err4; } - musb->dev.parent = &pdev->dev; - musb->dev.dma_mask = &da8xx_dmamask; - musb->dev.coherent_dma_mask = da8xx_dmamask; - glue->dev = &pdev->dev; - glue->musb = musb; glue->clk = clk; pdata->platform_ops = &da8xx_ops; - platform_set_drvdata(pdev, glue); - - ret = platform_device_add_resources(musb, pdev->resource, - pdev->num_resources); - if (ret) { - dev_err(&pdev->dev, "failed to add resources\n"); + glue->phy = usb_phy_generic_register(); + if (IS_ERR(glue->phy)) { + ret = PTR_ERR(glue->phy); goto err5; } + platform_set_drvdata(pdev, glue); - ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); - if (ret) { - dev_err(&pdev->dev, "failed to add platform_data\n"); - goto err5; - } - - ret = platform_device_add(musb); - if (ret) { - dev_err(&pdev->dev, "failed to register musb device\n"); - goto err5; + memset(musb_resources, 0x00, sizeof(*musb_resources) * + ARRAY_SIZE(musb_resources)); + + musb_resources[0].name = pdev->resource[0].name; + musb_resources[0].start = pdev->resource[0].start; + musb_resources[0].end = pdev->resource[0].end; + musb_resources[0].flags = pdev->resource[0].flags; + + musb_resources[1].name = pdev->resource[1].name; + musb_resources[1].start = pdev->resource[1].start; + musb_resources[1].end = pdev->resource[1].end; + musb_resources[1].flags = pdev->resource[1].flags; + + pinfo = da8xx_dev_info; + pinfo.parent = &pdev->dev; + pinfo.res = musb_resources; + pinfo.num_res = ARRAY_SIZE(musb_resources); + pinfo.data = pdata; + pinfo.size_data = sizeof(*pdata); + + glue->musb = musb = platform_device_register_full(&pinfo); + if (IS_ERR(musb)) { + ret = PTR_ERR(musb); + dev_err(&pdev->dev, "failed to register musb device: %d\n", ret); + goto err6; } return 0; +err6: + usb_phy_generic_unregister(glue->phy); + err5: clk_disable(clk); @@ -546,9 +557,6 @@ err4: clk_put(clk); err3: - platform_device_put(musb); - -err1: kfree(glue); err0: @@ -560,6 +568,7 @@ static int da8xx_remove(struct platform_device *pdev) struct da8xx_glue *glue = platform_get_drvdata(pdev); platform_device_unregister(glue->musb); + usb_phy_generic_unregister(glue->phy); clk_disable(glue->clk); clk_put(glue->clk); kfree(glue); diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c index b1c01cad28b..de8492b06e4 100644 --- a/drivers/usb/musb/davinci.c +++ b/drivers/usb/musb/davinci.c @@ -24,7 +24,6 @@ #include <linux/module.h> #include <linux/kernel.h> #include <linux/sched.h> -#include <linux/init.h> #include <linux/list.h> #include <linux/delay.h> #include <linux/clk.h> @@ -33,7 +32,7 @@ #include <linux/gpio.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> -#include <linux/usb/nop-usb-xceiv.h> +#include <linux/usb/usb_phy_generic.h> #include <mach/cputype.h> #include <mach/hardware.h> @@ -215,7 +214,7 @@ static void otg_timer(unsigned long _musb) */ devctl = musb_readb(mregs, MUSB_DEVCTL); dev_dbg(musb->controller, "poll devctl %02x (%s)\n", devctl, - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); spin_lock_irqsave(&musb->lock, flags); switch (musb->xceiv->state) { @@ -349,7 +348,7 @@ static irqreturn_t davinci_musb_interrupt(int irq, void *__hci) davinci_musb_source_power(musb, drvvbus, 0); dev_dbg(musb->controller, "VBUS %s (%s)%s, devctl %02x\n", drvvbus ? "on" : "off", - otg_state_string(musb->xceiv->state), + usb_otg_state_string(musb->xceiv->state), err ? " ERROR" : "", devctl); retval = IRQ_HANDLED; @@ -380,11 +379,13 @@ static int davinci_musb_init(struct musb *musb) { void __iomem *tibase = musb->ctrl_base; u32 revision; + int ret = -ENODEV; - usb_nop_xceiv_register(); musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); - if (IS_ERR_OR_NULL(musb->xceiv)) + if (IS_ERR_OR_NULL(musb->xceiv)) { + ret = -EPROBE_DEFER; goto unregister; + } musb->mregs += DAVINCI_BASE_OFFSET; @@ -437,8 +438,8 @@ static int davinci_musb_init(struct musb *musb) fail: usb_put_phy(musb->xceiv); unregister: - usb_nop_xceiv_unregister(); - return -ENODEV; + usb_phy_generic_unregister(); + return ret; } static int davinci_musb_exit(struct musb *musb) @@ -485,7 +486,6 @@ static int davinci_musb_exit(struct musb *musb) phy_off(); usb_put_phy(musb->xceiv); - usb_nop_xceiv_unregister(); return 0; } @@ -502,13 +502,19 @@ static const struct musb_platform_ops davinci_ops = { .set_vbus = davinci_musb_set_vbus, }; -static u64 davinci_dmamask = DMA_BIT_MASK(32); +static const struct platform_device_info davinci_dev_info = { + .name = "musb-hdrc", + .id = PLATFORM_DEVID_AUTO, + .dma_mask = DMA_BIT_MASK(32), +}; static int davinci_probe(struct platform_device *pdev) { - struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; + struct resource musb_resources[3]; + struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); struct platform_device *musb; struct davinci_glue *glue; + struct platform_device_info pinfo; struct clk *clk; int ret = -ENOMEM; @@ -519,12 +525,6 @@ static int davinci_probe(struct platform_device *pdev) goto err0; } - musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); - if (!musb) { - dev_err(&pdev->dev, "failed to allocate musb device\n"); - goto err1; - } - clk = clk_get(&pdev->dev, "usb"); if (IS_ERR(clk)) { dev_err(&pdev->dev, "failed to get clock\n"); @@ -538,34 +538,47 @@ static int davinci_probe(struct platform_device *pdev) goto err4; } - musb->dev.parent = &pdev->dev; - musb->dev.dma_mask = &davinci_dmamask; - musb->dev.coherent_dma_mask = davinci_dmamask; - glue->dev = &pdev->dev; - glue->musb = musb; glue->clk = clk; pdata->platform_ops = &davinci_ops; + usb_phy_generic_register(); platform_set_drvdata(pdev, glue); - ret = platform_device_add_resources(musb, pdev->resource, - pdev->num_resources); - if (ret) { - dev_err(&pdev->dev, "failed to add resources\n"); - goto err5; - } + memset(musb_resources, 0x00, sizeof(*musb_resources) * + ARRAY_SIZE(musb_resources)); - ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); - if (ret) { - dev_err(&pdev->dev, "failed to add platform_data\n"); - goto err5; - } + musb_resources[0].name = pdev->resource[0].name; + musb_resources[0].start = pdev->resource[0].start; + musb_resources[0].end = pdev->resource[0].end; + musb_resources[0].flags = pdev->resource[0].flags; - ret = platform_device_add(musb); - if (ret) { - dev_err(&pdev->dev, "failed to register musb device\n"); + musb_resources[1].name = pdev->resource[1].name; + musb_resources[1].start = pdev->resource[1].start; + musb_resources[1].end = pdev->resource[1].end; + musb_resources[1].flags = pdev->resource[1].flags; + + /* + * For DM6467 3 resources are passed. A placeholder for the 3rd + * resource is always there, so it's safe to always copy it... + */ + musb_resources[2].name = pdev->resource[2].name; + musb_resources[2].start = pdev->resource[2].start; + musb_resources[2].end = pdev->resource[2].end; + musb_resources[2].flags = pdev->resource[2].flags; + + pinfo = davinci_dev_info; + pinfo.parent = &pdev->dev; + pinfo.res = musb_resources; + pinfo.num_res = ARRAY_SIZE(musb_resources); + pinfo.data = pdata; + pinfo.size_data = sizeof(*pdata); + + glue->musb = musb = platform_device_register_full(&pinfo); + if (IS_ERR(musb)) { + ret = PTR_ERR(musb); + dev_err(&pdev->dev, "failed to register musb device: %d\n", ret); goto err5; } @@ -578,9 +591,6 @@ err4: clk_put(clk); err3: - platform_device_put(musb); - -err1: kfree(glue); err0: @@ -592,6 +602,7 @@ static int davinci_remove(struct platform_device *pdev) struct davinci_glue *glue = platform_get_drvdata(pdev); platform_device_unregister(glue->musb); + usb_phy_generic_unregister(); clk_disable(glue->clk); clk_put(glue->clk); kfree(glue); diff --git a/drivers/usb/musb/jz4740.c b/drivers/usb/musb/jz4740.c new file mode 100644 index 00000000000..5f30537f192 --- /dev/null +++ b/drivers/usb/musb/jz4740.c @@ -0,0 +1,201 @@ +/* + * Ingenic JZ4740 "glue layer" + * + * Copyright (C) 2013, Apelete Seketeli <apelete@seketeli.net> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/clk.h> +#include <linux/dma-mapping.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/platform_device.h> + +#include "musb_core.h" + +struct jz4740_glue { + struct device *dev; + struct platform_device *musb; + struct clk *clk; +}; + +static irqreturn_t jz4740_musb_interrupt(int irq, void *__hci) +{ + unsigned long flags; + irqreturn_t retval = IRQ_NONE; + struct musb *musb = __hci; + + spin_lock_irqsave(&musb->lock, flags); + + musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB); + musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX); + musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX); + + /* + * The controller is gadget only, the state of the host mode IRQ bits is + * undefined. Mask them to make sure that the musb driver core will + * never see them set + */ + musb->int_usb &= MUSB_INTR_SUSPEND | MUSB_INTR_RESUME | + MUSB_INTR_RESET | MUSB_INTR_SOF; + + if (musb->int_usb || musb->int_tx || musb->int_rx) + retval = musb_interrupt(musb); + + spin_unlock_irqrestore(&musb->lock, flags); + + return retval; +} + +static struct musb_fifo_cfg jz4740_musb_fifo_cfg[] = { +{ .hw_ep_num = 1, .style = FIFO_TX, .maxpacket = 512, }, +{ .hw_ep_num = 1, .style = FIFO_RX, .maxpacket = 512, }, +{ .hw_ep_num = 2, .style = FIFO_TX, .maxpacket = 64, }, +}; + +static struct musb_hdrc_config jz4740_musb_config = { + /* Silicon does not implement USB OTG. */ + .multipoint = 0, + /* Max EPs scanned, driver will decide which EP can be used. */ + .num_eps = 4, + /* RAMbits needed to configure EPs from table */ + .ram_bits = 9, + .fifo_cfg = jz4740_musb_fifo_cfg, + .fifo_cfg_size = ARRAY_SIZE(jz4740_musb_fifo_cfg), +}; + +static struct musb_hdrc_platform_data jz4740_musb_platform_data = { + .mode = MUSB_PERIPHERAL, + .config = &jz4740_musb_config, +}; + +static int jz4740_musb_init(struct musb *musb) +{ + musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); + if (!musb->xceiv) { + pr_err("HS UDC: no transceiver configured\n"); + return -ENODEV; + } + + /* Silicon does not implement ConfigData register. + * Set dyn_fifo to avoid reading EP config from hardware. + */ + musb->dyn_fifo = true; + + musb->isr = jz4740_musb_interrupt; + + return 0; +} + +static int jz4740_musb_exit(struct musb *musb) +{ + usb_put_phy(musb->xceiv); + + return 0; +} + +static const struct musb_platform_ops jz4740_musb_ops = { + .init = jz4740_musb_init, + .exit = jz4740_musb_exit, +}; + +static int jz4740_probe(struct platform_device *pdev) +{ + struct musb_hdrc_platform_data *pdata = &jz4740_musb_platform_data; + struct platform_device *musb; + struct jz4740_glue *glue; + struct clk *clk; + int ret; + + glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); + if (!glue) + return -ENOMEM; + + musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); + if (!musb) { + dev_err(&pdev->dev, "failed to allocate musb device\n"); + return -ENOMEM; + } + + clk = devm_clk_get(&pdev->dev, "udc"); + if (IS_ERR(clk)) { + dev_err(&pdev->dev, "failed to get clock\n"); + ret = PTR_ERR(clk); + goto err_platform_device_put; + } + + ret = clk_prepare_enable(clk); + if (ret) { + dev_err(&pdev->dev, "failed to enable clock\n"); + goto err_platform_device_put; + } + + musb->dev.parent = &pdev->dev; + + glue->dev = &pdev->dev; + glue->musb = musb; + glue->clk = clk; + + pdata->platform_ops = &jz4740_musb_ops; + + platform_set_drvdata(pdev, glue); + + ret = platform_device_add_resources(musb, pdev->resource, + pdev->num_resources); + if (ret) { + dev_err(&pdev->dev, "failed to add resources\n"); + goto err_clk_disable; + } + + ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); + if (ret) { + dev_err(&pdev->dev, "failed to add platform_data\n"); + goto err_clk_disable; + } + + ret = platform_device_add(musb); + if (ret) { + dev_err(&pdev->dev, "failed to register musb device\n"); + goto err_clk_disable; + } + + return 0; + +err_clk_disable: + clk_disable_unprepare(clk); +err_platform_device_put: + platform_device_put(musb); + return ret; +} + +static int jz4740_remove(struct platform_device *pdev) +{ + struct jz4740_glue *glue = platform_get_drvdata(pdev); + + platform_device_unregister(glue->musb); + clk_disable_unprepare(glue->clk); + + return 0; +} + +static struct platform_driver jz4740_driver = { + .probe = jz4740_probe, + .remove = jz4740_remove, + .driver = { + .name = "musb-jz4740", + }, +}; + +MODULE_DESCRIPTION("JZ4740 MUSB Glue Layer"); +MODULE_AUTHOR("Apelete Seketeli <apelete@seketeli.net>"); +MODULE_LICENSE("GPL v2"); +module_platform_driver(jz4740_driver); diff --git a/drivers/usb/musb/musb_am335x.c b/drivers/usb/musb/musb_am335x.c new file mode 100644 index 00000000000..1e58ed2361c --- /dev/null +++ b/drivers/usb/musb/musb_am335x.c @@ -0,0 +1,43 @@ +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/module.h> +#include <linux/of_platform.h> + +static int am335x_child_probe(struct platform_device *pdev) +{ + int ret; + + pm_runtime_enable(&pdev->dev); + + ret = of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev); + if (ret) + goto err; + + return 0; +err: + pm_runtime_disable(&pdev->dev); + return ret; +} + +static const struct of_device_id am335x_child_of_match[] = { + { .compatible = "ti,am33xx-usb" }, + { }, +}; +MODULE_DEVICE_TABLE(of, am335x_child_of_match); + +static struct platform_driver am335x_child_driver = { + .probe = am335x_child_probe, + .driver = { + .name = "am335x-usb-childs", + .of_match_table = am335x_child_of_match, + }, +}; + +static int __init am335x_child_init(void) +{ + return platform_driver_register(&am335x_child_driver); +} +module_init(am335x_child_init); + +MODULE_DESCRIPTION("AM33xx child devices"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index fd3486745e6..eff3c5cf84f 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -83,7 +83,7 @@ * This gets many kinds of configuration information: * - Kconfig for everything user-configurable * - platform_device for addressing, irq, and platform_data - * - platform_data is mostly for board-specific informarion + * - platform_data is mostly for board-specific information * (plus recentrly, SOC or family details) * * Most of the conditional compilation will (someday) vanish. @@ -93,13 +93,11 @@ #include <linux/kernel.h> #include <linux/sched.h> #include <linux/slab.h> -#include <linux/init.h> #include <linux/list.h> #include <linux/kobject.h> #include <linux/prefetch.h> #include <linux/platform_device.h> #include <linux/io.h> -#include <linux/idr.h> #include <linux/dma-mapping.h> #include "musb_core.h" @@ -372,15 +370,14 @@ static void musb_otg_timer_func(unsigned long data) case OTG_STATE_A_SUSPEND: case OTG_STATE_A_WAIT_BCON: dev_dbg(musb->controller, "HNP: %s timeout\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); musb_platform_set_vbus(musb, 0); musb->xceiv->state = OTG_STATE_A_WAIT_VFALL; break; default: dev_dbg(musb->controller, "HNP: Unhandled mode %s\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); } - musb->ignore_disconnect = 0; spin_unlock_irqrestore(&musb->lock, flags); } @@ -389,21 +386,23 @@ static void musb_otg_timer_func(unsigned long data) */ void musb_hnp_stop(struct musb *musb) { - struct usb_hcd *hcd = musb_to_hcd(musb); + struct usb_hcd *hcd = musb->hcd; void __iomem *mbase = musb->mregs; u8 reg; - dev_dbg(musb->controller, "HNP: stop from %s\n", otg_state_string(musb->xceiv->state)); + dev_dbg(musb->controller, "HNP: stop from %s\n", + usb_otg_state_string(musb->xceiv->state)); switch (musb->xceiv->state) { case OTG_STATE_A_PERIPHERAL: musb_g_disconnect(musb); dev_dbg(musb->controller, "HNP: back to %s\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); break; case OTG_STATE_B_HOST: dev_dbg(musb->controller, "HNP: Disabling HR\n"); - hcd->self.is_b_host = 0; + if (hcd) + hcd->self.is_b_host = 0; musb->xceiv->state = OTG_STATE_B_PERIPHERAL; MUSB_DEV_MODE(musb); reg = musb_readb(mbase, MUSB_POWER); @@ -413,7 +412,7 @@ void musb_hnp_stop(struct musb *musb) break; default: dev_dbg(musb->controller, "HNP: Stopping in unknown state %s\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); } /* @@ -439,7 +438,6 @@ void musb_hnp_stop(struct musb *musb) static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, u8 devctl) { - struct usb_otg *otg = musb->xceiv->otg; irqreturn_t handled = IRQ_NONE; dev_dbg(musb->controller, "<== DevCtl=%02x, int_usb=0x%x\n", devctl, @@ -451,7 +449,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, */ if (int_usb & MUSB_INTR_RESUME) { handled = IRQ_HANDLED; - dev_dbg(musb->controller, "RESUME (%s)\n", otg_state_string(musb->xceiv->state)); + dev_dbg(musb->controller, "RESUME (%s)\n", usb_otg_state_string(musb->xceiv->state)); if (devctl & MUSB_DEVCTL_HM) { void __iomem *mbase = musb->mregs; @@ -479,11 +477,14 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, (USB_PORT_STAT_C_SUSPEND << 16) | MUSB_PORT_STAT_RESUME; musb->rh_timer = jiffies - + msecs_to_jiffies(20); + + msecs_to_jiffies(20); + schedule_delayed_work( + &musb->finish_resume_work, + msecs_to_jiffies(20)); musb->xceiv->state = OTG_STATE_A_HOST; musb->is_active = 1; - usb_hcd_resume_root_hub(musb_to_hcd(musb)); + musb_host_resume_root_hub(musb); break; case OTG_STATE_B_WAIT_ACON: musb->xceiv->state = OTG_STATE_B_PERIPHERAL; @@ -493,14 +494,14 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, default: WARNING("bogus %s RESUME (%s)\n", "host", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); } } else { switch (musb->xceiv->state) { case OTG_STATE_A_SUSPEND: /* possibly DISCONNECT is upcoming */ musb->xceiv->state = OTG_STATE_A_HOST; - usb_hcd_resume_root_hub(musb_to_hcd(musb)); + musb_host_resume_root_hub(musb); break; case OTG_STATE_B_WAIT_ACON: case OTG_STATE_B_PERIPHERAL: @@ -522,7 +523,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, default: WARNING("bogus %s RESUME (%s)\n", "peripheral", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); } } } @@ -538,7 +539,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, } dev_dbg(musb->controller, "SESSION_REQUEST (%s)\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); /* IRQ arrives from ID pin sense or (later, if VBUS power * is removed) SRP. responses are time critical: @@ -602,8 +603,9 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, break; } - dev_dbg(musb->controller, "VBUS_ERROR in %s (%02x, %s), retry #%d, port1 %08x\n", - otg_state_string(musb->xceiv->state), + dev_printk(ignore ? KERN_DEBUG : KERN_ERR, musb->controller, + "VBUS_ERROR in %s (%02x, %s), retry #%d, port1 %08x\n", + usb_otg_state_string(musb->xceiv->state), devctl, ({ char *s; switch (devctl & MUSB_DEVCTL_VBUS) { @@ -616,7 +618,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, /* case 3 << MUSB_DEVCTL_VBUS_SHIFT: */ default: s = "VALID"; break; - }; s; }), + } s; }), VBUSERR_RETRY_COUNT - musb->vbuserr_retry, musb->port1_status); @@ -628,7 +630,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, if (int_usb & MUSB_INTR_SUSPEND) { dev_dbg(musb->controller, "SUSPEND (%s) devctl %02x\n", - otg_state_string(musb->xceiv->state), devctl); + usb_otg_state_string(musb->xceiv->state), devctl); handled = IRQ_HANDLED; switch (musb->xceiv->state) { @@ -641,7 +643,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, * undesired detour through A_WAIT_BCON. */ musb_hnp_stop(musb); - usb_hcd_resume_root_hub(musb_to_hcd(musb)); + musb_host_resume_root_hub(musb); musb_root_disconnect(musb); musb_platform_try_idle(musb, jiffies + msecs_to_jiffies(musb->a_wait_bcon @@ -653,7 +655,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, break; case OTG_STATE_B_PERIPHERAL: musb_g_suspend(musb); - musb->is_active = otg->gadget->b_hnp_enable; + musb->is_active = musb->g.b_hnp_enable; if (musb->is_active) { musb->xceiv->state = OTG_STATE_B_WAIT_ACON; dev_dbg(musb->controller, "HNP: Setting timer for b_ase0_brst\n"); @@ -669,7 +671,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, break; case OTG_STATE_A_HOST: musb->xceiv->state = OTG_STATE_A_SUSPEND; - musb->is_active = otg->host->b_hnp_enable; + musb->is_active = musb->hcd->self.b_hnp_enable; break; case OTG_STATE_B_HOST: /* Transition to B_PERIPHERAL, see 6.8.2.6 p 44 */ @@ -683,7 +685,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, } if (int_usb & MUSB_INTR_CONNECT) { - struct usb_hcd *hcd = musb_to_hcd(musb); + struct usb_hcd *hcd = musb->hcd; handled = IRQ_HANDLED; musb->is_active = 1; @@ -724,40 +726,36 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, dev_dbg(musb->controller, "HNP: CONNECT, now b_host\n"); b_host: musb->xceiv->state = OTG_STATE_B_HOST; - hcd->self.is_b_host = 1; - musb->ignore_disconnect = 0; + if (musb->hcd) + musb->hcd->self.is_b_host = 1; del_timer(&musb->otg_timer); break; default: if ((devctl & MUSB_DEVCTL_VBUS) == (3 << MUSB_DEVCTL_VBUS_SHIFT)) { musb->xceiv->state = OTG_STATE_A_HOST; - hcd->self.is_b_host = 0; + if (hcd) + hcd->self.is_b_host = 0; } break; } - /* poke the root hub */ - MUSB_HST_MODE(musb); - if (hcd->status_urb) - usb_hcd_poll_rh_status(hcd); - else - usb_hcd_resume_root_hub(hcd); + musb_host_poke_root_hub(musb); dev_dbg(musb->controller, "CONNECT (%s) devctl %02x\n", - otg_state_string(musb->xceiv->state), devctl); + usb_otg_state_string(musb->xceiv->state), devctl); } - if ((int_usb & MUSB_INTR_DISCONNECT) && !musb->ignore_disconnect) { + if (int_usb & MUSB_INTR_DISCONNECT) { dev_dbg(musb->controller, "DISCONNECT (%s) as %s, devctl %02x\n", - otg_state_string(musb->xceiv->state), + usb_otg_state_string(musb->xceiv->state), MUSB_MODE(musb), devctl); handled = IRQ_HANDLED; switch (musb->xceiv->state) { case OTG_STATE_A_HOST: case OTG_STATE_A_SUSPEND: - usb_hcd_resume_root_hub(musb_to_hcd(musb)); + musb_host_resume_root_hub(musb); musb_root_disconnect(musb); if (musb->a_wait_bcon != 0) musb_platform_try_idle(musb, jiffies @@ -770,7 +768,8 @@ b_host: * in hnp_stop() is currently not used... */ musb_root_disconnect(musb); - musb_to_hcd(musb)->self.is_b_host = 0; + if (musb->hcd) + musb->hcd->self.is_b_host = 0; musb->xceiv->state = OTG_STATE_B_PERIPHERAL; MUSB_DEV_MODE(musb); musb_g_disconnect(musb); @@ -787,7 +786,7 @@ b_host: break; default: WARNING("unhandled DISCONNECT transition (%s)\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); break; } } @@ -813,32 +812,26 @@ b_host: } } else { dev_dbg(musb->controller, "BUS RESET as %s\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); switch (musb->xceiv->state) { case OTG_STATE_A_SUSPEND: - /* We need to ignore disconnect on suspend - * otherwise tusb 2.0 won't reconnect after a - * power cycle, which breaks otg compliance. - */ - musb->ignore_disconnect = 1; musb_g_reset(musb); /* FALLTHROUGH */ case OTG_STATE_A_WAIT_BCON: /* OPT TD.4.7-900ms */ /* never use invalid T(a_wait_bcon) */ dev_dbg(musb->controller, "HNP: in %s, %d msec timeout\n", - otg_state_string(musb->xceiv->state), + usb_otg_state_string(musb->xceiv->state), TA_WAIT_BCON(musb)); mod_timer(&musb->otg_timer, jiffies + msecs_to_jiffies(TA_WAIT_BCON(musb))); break; case OTG_STATE_A_PERIPHERAL: - musb->ignore_disconnect = 0; del_timer(&musb->otg_timer); musb_g_reset(musb); break; case OTG_STATE_B_WAIT_ACON: dev_dbg(musb->controller, "HNP: RESET (%s), to b_peripheral\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); musb->xceiv->state = OTG_STATE_B_PERIPHERAL; musb_g_reset(musb); break; @@ -850,11 +843,15 @@ b_host: break; default: dev_dbg(musb->controller, "Unhandled BUS RESET as %s\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); } } } + /* handle babble condition */ + if (int_usb & MUSB_INTR_BABBLE && is_host_active(musb)) + schedule_work(&musb->recover_work); + #if 0 /* REVISIT ... this would be for multiplexing periodic endpoints, or * supporting transfer phasing to prevent exceeding ISO bandwidth @@ -907,13 +904,35 @@ b_host: /*-------------------------------------------------------------------------*/ +static void musb_generic_disable(struct musb *musb) +{ + void __iomem *mbase = musb->mregs; + u16 temp; + + /* disable interrupts */ + musb_writeb(mbase, MUSB_INTRUSBE, 0); + musb->intrtxe = 0; + musb_writew(mbase, MUSB_INTRTXE, 0); + musb->intrrxe = 0; + musb_writew(mbase, MUSB_INTRRXE, 0); + + /* off */ + musb_writeb(mbase, MUSB_DEVCTL, 0); + + /* flush pending interrupts */ + temp = musb_readb(mbase, MUSB_INTRUSB); + temp = musb_readw(mbase, MUSB_INTRTX); + temp = musb_readw(mbase, MUSB_INTRRX); + +} + /* -* Program the HDRC to start (enable interrupts, dma, etc.). -*/ + * Program the HDRC to start (enable interrupts, dma, etc.). + */ void musb_start(struct musb *musb) { - void __iomem *regs = musb->mregs; - u8 devctl = musb_readb(regs, MUSB_DEVCTL); + void __iomem *regs = musb->mregs; + u8 devctl = musb_readb(regs, MUSB_DEVCTL); dev_dbg(musb->controller, "<== devctl %02x\n", devctl); @@ -928,10 +947,10 @@ void musb_start(struct musb *musb) /* put into basic highspeed mode and start session */ musb_writeb(regs, MUSB_POWER, MUSB_POWER_ISOUPDATE - | MUSB_POWER_HSENAB - /* ENSUSPEND wedges tusb */ - /* | MUSB_POWER_ENSUSPEND */ - ); + | MUSB_POWER_HSENAB + /* ENSUSPEND wedges tusb */ + /* | MUSB_POWER_ENSUSPEND */ + ); musb->is_active = 0; devctl = musb_readb(regs, MUSB_DEVCTL); @@ -942,38 +961,17 @@ void musb_start(struct musb *musb) * (b) vbus present/connect IRQ, peripheral mode; * (c) peripheral initiates, using SRP */ - if ((devctl & MUSB_DEVCTL_VBUS) == MUSB_DEVCTL_VBUS) + if (musb->port_mode != MUSB_PORT_MODE_HOST && + (devctl & MUSB_DEVCTL_VBUS) == MUSB_DEVCTL_VBUS) { musb->is_active = 1; - else + } else { devctl |= MUSB_DEVCTL_SESSION; + } musb_platform_enable(musb); musb_writeb(regs, MUSB_DEVCTL, devctl); } - -static void musb_generic_disable(struct musb *musb) -{ - void __iomem *mbase = musb->mregs; - u16 temp; - - /* disable interrupts */ - musb_writeb(mbase, MUSB_INTRUSBE, 0); - musb->intrtxe = 0; - musb_writew(mbase, MUSB_INTRTXE, 0); - musb->intrrxe = 0; - musb_writew(mbase, MUSB_INTRRXE, 0); - - /* off */ - musb_writeb(mbase, MUSB_DEVCTL, 0); - - /* flush pending interrupts */ - temp = musb_readb(mbase, MUSB_INTRUSB); - temp = musb_readw(mbase, MUSB_INTRTX); - temp = musb_readw(mbase, MUSB_INTRRX); - -} - /* * Make the HDRC stop (disable interrupts, etc.); * reversible by musb_start @@ -1005,6 +1003,7 @@ static void musb_shutdown(struct platform_device *pdev) pm_runtime_get_sync(musb->controller); + musb_host_cleanup(musb); musb_gadget_cleanup(musb); spin_lock_irqsave(&musb->lock, flags); @@ -1193,7 +1192,7 @@ fifo_setup(struct musb *musb, struct musb_hw_ep *hw_ep, musb_writeb(mbase, MUSB_INDEX, hw_ep->epnum); /* EP0 reserved endpoint for control, bidirectional; - * EP1 reserved for bulk, two unidirection halves. + * EP1 reserved for bulk, two unidirectional halves. */ if (hw_ep->epnum == 1) musb->bulk_ep = hw_ep; @@ -1624,8 +1623,6 @@ EXPORT_SYMBOL_GPL(musb_dma_completion); /*-------------------------------------------------------------------------*/ -#ifdef CONFIG_SYSFS - static ssize_t musb_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -1634,7 +1631,7 @@ musb_mode_show(struct device *dev, struct device_attribute *attr, char *buf) int ret = -EINVAL; spin_lock_irqsave(&musb->lock, flags); - ret = sprintf(buf, "%s\n", otg_state_string(musb->xceiv->state)); + ret = sprintf(buf, "%s\n", usb_otg_state_string(musb->xceiv->state)); spin_unlock_irqrestore(&musb->lock, flags); return ret; @@ -1742,8 +1739,6 @@ static const struct attribute_group musb_attr_group = { .attrs = musb_attributes, }; -#endif /* sysfs */ - /* Only used to provide driver mode change events */ static void musb_irq_work(struct work_struct *data) { @@ -1755,6 +1750,34 @@ static void musb_irq_work(struct work_struct *data) } } +/* Recover from babble interrupt conditions */ +static void musb_recover_work(struct work_struct *data) +{ + struct musb *musb = container_of(data, struct musb, recover_work); + int status; + + musb_platform_reset(musb); + + usb_phy_vbus_off(musb->xceiv); + udelay(100); + + usb_phy_vbus_on(musb->xceiv); + udelay(100); + + /* + * When a babble condition occurs, the musb controller removes the + * session bit and the endpoint config is lost. + */ + if (musb->dyn_fifo) + status = ep_config_from_table(musb); + else + status = ep_config_from_hw(musb); + + /* start the session again */ + if (status == 0) + musb_start(musb); +} + /* -------------------------------------------------------------------------- * Init support */ @@ -1765,24 +1788,18 @@ static struct musb *allocate_instance(struct device *dev, struct musb *musb; struct musb_hw_ep *ep; int epnum; - struct usb_hcd *hcd; + int ret; - hcd = usb_create_hcd(&musb_hc_driver, dev, dev_name(dev)); - if (!hcd) + musb = devm_kzalloc(dev, sizeof(*musb), GFP_KERNEL); + if (!musb) return NULL; - /* usbcore sets dev->driver_data to hcd, and sometimes uses that... */ - musb = hcd_to_musb(hcd); INIT_LIST_HEAD(&musb->control); INIT_LIST_HEAD(&musb->in_bulk); INIT_LIST_HEAD(&musb->out_bulk); - hcd->uses_new_polling = 1; - hcd->has_tt = 1; - musb->vbuserr_retry = VBUSERR_RETRY_COUNT; musb->a_wait_bcon = OTG_TIME_A_WAIT_BCON; - dev_set_drvdata(dev, musb); musb->mregs = mbase; musb->ctrl_base = mbase; musb->nIrq = -ENODEV; @@ -1797,7 +1814,16 @@ static struct musb *allocate_instance(struct device *dev, musb->controller = dev; + ret = musb_host_alloc(musb); + if (ret < 0) + goto err_free; + + dev_set_drvdata(dev, musb); + return musb; + +err_free: + return NULL; } static void musb_free(struct musb *musb) @@ -1816,14 +1842,23 @@ static void musb_free(struct musb *musb) disable_irq_wake(musb->nIrq); free_irq(musb->nIrq, musb); } - if (is_dma_capable() && musb->dma_controller) { - struct dma_controller *c = musb->dma_controller; - (void) c->stop(c); - dma_controller_destroy(c); - } + musb_host_free(musb); +} + +static void musb_deassert_reset(struct work_struct *work) +{ + struct musb *musb; + unsigned long flags; + + musb = container_of(work, struct musb, deassert_reset_work.work); + + spin_lock_irqsave(&musb->lock, flags); - usb_put_hcd(musb_to_hcd(musb)); + if (musb->port1_status & USB_PORT_STAT_RESET) + musb_port_reset(musb, false); + + spin_unlock_irqrestore(&musb->lock, flags); } /* @@ -1839,8 +1874,7 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) { int status; struct musb *musb; - struct musb_hdrc_platform_data *plat = dev->platform_data; - struct usb_hcd *hcd; + struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); /* The driver might handle more features than the board; OK. * Fail when the board needs a feature that's not enabled. @@ -1866,11 +1900,12 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) musb->board_set_power = plat->set_power; musb->min_power = plat->min_power; musb->ops = plat->platform_ops; + musb->port_mode = plat->mode; /* The musb_platform_init() call: * - adjusts musb->mregs * - sets the musb->isr - * - may initialize an integrated tranceiver + * - may initialize an integrated transceiver * - initializes musb->xceiv, usually by otg_get_phy() * - stops powering VBUS * @@ -1896,24 +1931,24 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) pm_runtime_get_sync(musb->controller); -#ifndef CONFIG_MUSB_PIO_ONLY if (use_dma && dev->dma_mask) { - struct dma_controller *c; - - c = dma_controller_create(musb, musb->mregs); - musb->dma_controller = c; - if (c) - (void) c->start(c); + musb->dma_controller = dma_controller_create(musb, musb->mregs); + if (IS_ERR(musb->dma_controller)) { + status = PTR_ERR(musb->dma_controller); + goto fail2_5; + } } -#endif - /* ideally this would be abstracted in platform setup */ - if (!is_dma_capable() || !musb->dma_controller) - dev->dma_mask = NULL; /* be sure interrupts are disabled before connecting ISR */ musb_platform_disable(musb); musb_generic_disable(musb); + /* Init IRQ workqueue before request_irq */ + INIT_WORK(&musb->irq_work, musb_irq_work); + INIT_WORK(&musb->recover_work, musb_recover_work); + INIT_DELAYED_WORK(&musb->deassert_reset_work, musb_deassert_reset); + INIT_DELAYED_WORK(&musb->finish_resume_work, musb_host_finish_resume); + /* setup musb parts of the core (especially endpoints) */ status = musb_core_init(plat->config->multipoint ? MUSB_CONTROLLER_MHDRC @@ -1923,9 +1958,6 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) setup_timer(&musb->otg_timer, musb_otg_timer_func, (unsigned long) musb); - /* Init IRQ workqueue before request_irq */ - INIT_WORK(&musb->irq_work, musb_irq_work); - /* attach to the IRQ */ if (request_irq(nIrq, musb->isr, 0, dev_name(dev), musb)) { dev_err(dev, "request_irq %d failed!\n", nIrq); @@ -1941,13 +1973,6 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) musb->irq_wake = 0; } - /* host side needs more setup */ - hcd = musb_to_hcd(musb); - otg_set_host(musb->xceiv->otg, &hcd->self); - hcd->self.otg_port = 1; - musb->xceiv->otg->host = &hcd->self; - hcd->power_budget = 2 * (plat->power ? : 250); - /* program PHY to use external vBus if required */ if (plat->extvbus) { u8 busctl = musb_read_ulpi_buscontrol(musb->mregs); @@ -1955,11 +1980,42 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) musb_write_ulpi_buscontrol(musb->mregs, busctl); } - MUSB_DEV_MODE(musb); - musb->xceiv->otg->default_a = 0; - musb->xceiv->state = OTG_STATE_B_IDLE; + if (musb->xceiv->otg->default_a) { + MUSB_HST_MODE(musb); + musb->xceiv->state = OTG_STATE_A_IDLE; + } else { + MUSB_DEV_MODE(musb); + musb->xceiv->state = OTG_STATE_B_IDLE; + } - status = musb_gadget_setup(musb); + switch (musb->port_mode) { + case MUSB_PORT_MODE_HOST: + status = musb_host_setup(musb, plat->power); + if (status < 0) + goto fail3; + status = musb_platform_set_mode(musb, MUSB_HOST); + break; + case MUSB_PORT_MODE_GADGET: + status = musb_gadget_setup(musb); + if (status < 0) + goto fail3; + status = musb_platform_set_mode(musb, MUSB_PERIPHERAL); + break; + case MUSB_PORT_MODE_DUAL_ROLE: + status = musb_host_setup(musb, plat->power); + if (status < 0) + goto fail3; + status = musb_gadget_setup(musb); + if (status) { + musb_host_cleanup(musb); + goto fail3; + } + status = musb_platform_set_mode(musb, MUSB_OTG); + break; + default: + dev_err(dev, "unsupported port mode %d\n", musb->port_mode); + break; + } if (status < 0) goto fail3; @@ -1968,11 +2024,9 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) if (status < 0) goto fail4; -#ifdef CONFIG_SYSFS status = sysfs_create_group(&musb->controller->kobj, &musb_attr_group); if (status) goto fail5; -#endif pm_runtime_put(musb->controller); @@ -1983,8 +2037,16 @@ fail5: fail4: musb_gadget_cleanup(musb); + musb_host_cleanup(musb); fail3: + cancel_work_sync(&musb->irq_work); + cancel_work_sync(&musb->recover_work); + cancel_delayed_work_sync(&musb->finish_resume_work); + cancel_delayed_work_sync(&musb->deassert_reset_work); + if (musb->dma_controller) + dma_controller_destroy(musb->dma_controller); +fail2_5: pm_runtime_put_sync(musb->controller); fail2: @@ -1993,6 +2055,7 @@ fail2: musb_platform_exit(musb); fail1: + pm_runtime_disable(musb->controller); dev_err(musb->controller, "musb_init_controller failed with status %d\n", status); @@ -2013,7 +2076,6 @@ static int musb_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; int irq = platform_get_irq_byname(pdev, "mc"); - int status; struct resource *iomem; void __iomem *base; @@ -2021,24 +2083,17 @@ static int musb_probe(struct platform_device *pdev) if (!iomem || irq <= 0) return -ENODEV; - base = ioremap(iomem->start, resource_size(iomem)); - if (!base) { - dev_err(dev, "ioremap failed\n"); - return -ENOMEM; - } + base = devm_ioremap_resource(dev, iomem); + if (IS_ERR(base)) + return PTR_ERR(base); - status = musb_init_controller(dev, irq, base); - if (status < 0) - iounmap(base); - - return status; + return musb_init_controller(dev, irq, base); } static int musb_remove(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct musb *musb = dev_to_musb(dev); - void __iomem *ctrl_base = musb->ctrl_base; /* this gets called on rmmod. * - Host mode: host may still be active @@ -2048,12 +2103,15 @@ static int musb_remove(struct platform_device *pdev) musb_exit_debugfs(musb); musb_shutdown(pdev); + if (musb->dma_controller) + dma_controller_destroy(musb->dma_controller); + + cancel_work_sync(&musb->irq_work); + cancel_work_sync(&musb->recover_work); + cancel_delayed_work_sync(&musb->finish_resume_work); + cancel_delayed_work_sync(&musb->deassert_reset_work); musb_free(musb); - iounmap(ctrl_base); device_init_wakeup(dev, 0); -#ifndef CONFIG_MUSB_PIO_ONLY - dma_set_mask(dev, *dev->parent->dma_mask); -#endif return 0; } @@ -2136,11 +2194,19 @@ static void musb_restore_context(struct musb *musb) void __iomem *musb_base = musb->mregs; void __iomem *ep_target_regs; void __iomem *epio; + u8 power; musb_writew(musb_base, MUSB_FRAME, musb->context.frame); musb_writeb(musb_base, MUSB_TESTMODE, musb->context.testmode); musb_write_ulpi_buscontrol(musb->mregs, musb->context.busctl); - musb_writeb(musb_base, MUSB_POWER, musb->context.power); + + /* Don't affect SUSPENDM/RESUME bits in POWER reg */ + power = musb_readb(musb_base, MUSB_POWER); + power &= MUSB_POWER_SUSPENDM | MUSB_POWER_RESUME; + musb->context.power &= ~(MUSB_POWER_SUSPENDM | MUSB_POWER_RESUME); + power |= musb->context.power; + musb_writeb(musb_base, MUSB_POWER, power); + musb_writew(musb_base, MUSB_INTRTXE, musb->intrtxe); musb_writew(musb_base, MUSB_INTRRXE, musb->intrrxe); musb_writeb(musb_base, MUSB_INTRUSBE, musb->context.intrusbe); @@ -2224,16 +2290,28 @@ static int musb_suspend(struct device *dev) */ } + musb_save_context(musb); + spin_unlock_irqrestore(&musb->lock, flags); return 0; } static int musb_resume_noirq(struct device *dev) { - /* for static cmos like DaVinci, register values were preserved + struct musb *musb = dev_to_musb(dev); + + /* + * For static cmos like DaVinci, register values were preserved * unless for some reason the whole soc powered down or the USB * module got reset through the PSC (vs just being disabled). + * + * For the DSPS glue layer though, a full register restore has to + * be done. As it shouldn't harm other platforms, we do it + * unconditionally. */ + + musb_restore_context(musb); + return 0; } @@ -2291,21 +2369,4 @@ static struct platform_driver musb_driver = { .shutdown = musb_shutdown, }; -/*-------------------------------------------------------------------------*/ - -static int __init musb_init(void) -{ - if (usb_disabled()) - return 0; - - pr_info("%s: version " MUSB_VERSION ", ?dma?, otg (peripheral+host)\n", - musb_driver_name); - return platform_driver_register(&musb_driver); -} -module_init(musb_init); - -static void __exit musb_cleanup(void) -{ - platform_driver_unregister(&musb_driver); -} -module_exit(musb_cleanup); +module_platform_driver(musb_driver); diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h index 7fb4819a6f1..d155a156f24 100644 --- a/drivers/usb/musb/musb_core.h +++ b/drivers/usb/musb/musb_core.h @@ -46,6 +46,8 @@ #include <linux/usb.h> #include <linux/usb/otg.h> #include <linux/usb/musb.h> +#include <linux/phy/phy.h> +#include <linux/workqueue.h> struct musb; struct musb_hw_ep; @@ -77,27 +79,11 @@ struct musb_ep; #define is_peripheral_active(m) (!(m)->is_host) #define is_host_active(m) ((m)->is_host) -#ifdef CONFIG_PROC_FS -#include <linux/fs.h> -#define MUSB_CONFIG_PROC_FS -#endif - -/****************************** PERIPHERAL ROLE *****************************/ - -extern irqreturn_t musb_g_ep0_irq(struct musb *); -extern void musb_g_tx(struct musb *, u8); -extern void musb_g_rx(struct musb *, u8); -extern void musb_g_reset(struct musb *); -extern void musb_g_suspend(struct musb *); -extern void musb_g_resume(struct musb *); -extern void musb_g_wakeup(struct musb *); -extern void musb_g_disconnect(struct musb *); - -/****************************** HOST ROLE ***********************************/ - -extern irqreturn_t musb_h_ep0_irq(struct musb *); -extern void musb_host_tx(struct musb *, u8); -extern void musb_host_rx(struct musb *, u8); +enum { + MUSB_PORT_MODE_HOST = 1, + MUSB_PORT_MODE_GADGET, + MUSB_PORT_MODE_DUAL_ROLE, +}; /****************************** CONSTANTS ********************************/ @@ -206,6 +192,7 @@ struct musb_platform_ops { int (*set_mode)(struct musb *musb, u8 mode); void (*try_idle)(struct musb *musb, unsigned long timeout); + void (*reset)(struct musb *musb); int (*vbus_status)(struct musb *musb); void (*set_vbus)(struct musb *musb, int on); @@ -310,6 +297,9 @@ struct musb { irqreturn_t (*isr)(int, void *); struct work_struct irq_work; + struct work_struct recover_work; + struct delayed_work deassert_reset_work; + struct delayed_work finish_resume_work; u16 hwvers; u16 intrrxe; @@ -349,6 +339,7 @@ struct musb { dma_addr_t async; dma_addr_t sync; void __iomem *sync_va; + u8 tusb_revision; #endif /* passed down from chip/board specific irq handlers */ @@ -357,6 +348,7 @@ struct musb { u16 int_tx; struct usb_phy *xceiv; + struct phy *phy; int nIrq; unsigned irq_wake:1; @@ -373,6 +365,7 @@ struct musb { u8 min_power; /* vbus for periph, in mA/2 */ + int port_mode; /* MUSB_PORT_MODE_* */ bool is_host; int a_wait_bcon; /* VBUS timeout in msecs */ @@ -382,7 +375,6 @@ struct musb { unsigned is_active:1; unsigned is_multipoint:1; - unsigned ignore_disconnect:1; /* during bus resets */ unsigned hb_iso_rx:1; /* high bandwidth iso rx? */ unsigned hb_iso_tx:1; /* high bandwidth iso tx? */ @@ -419,6 +411,7 @@ struct musb { enum musb_g_ep0_state ep0_state; struct usb_gadget g; /* the gadget */ struct usb_gadget_driver *gadget_driver; /* its driver */ + struct usb_hcd *hcd; /* the usb hcd */ /* * FIXME: Remove this flag. @@ -435,9 +428,6 @@ struct musb { struct musb_hdrc_config *config; -#ifdef MUSB_CONFIG_PROC_FS - struct proc_dir_entry *proc_entry; -#endif int xceiv_old_state; #ifdef CONFIG_DEBUG_FS struct dentry *debugfs_root; @@ -520,8 +510,8 @@ static inline void musb_configure_ep0(struct musb *musb) extern const char musb_driver_name[]; -extern void musb_start(struct musb *musb); extern void musb_stop(struct musb *musb); +extern void musb_start(struct musb *musb); extern void musb_write_fifo(struct musb_hw_ep *ep, u16 len, const u8 *src); extern void musb_read_fifo(struct musb_hw_ep *ep, u16 len, u8 *dst); @@ -565,6 +555,12 @@ static inline void musb_platform_try_idle(struct musb *musb, musb->ops->try_idle(musb, timeout); } +static inline void musb_platform_reset(struct musb *musb) +{ + if (musb->ops->reset) + musb->ops->reset(musb); +} + static inline int musb_platform_get_vbus_status(struct musb *musb) { if (!musb->ops->vbus_status) diff --git a/drivers/usb/musb/musb_cppi41.c b/drivers/usb/musb/musb_cppi41.c new file mode 100644 index 00000000000..5341bb223b7 --- /dev/null +++ b/drivers/usb/musb/musb_cppi41.c @@ -0,0 +1,744 @@ +#include <linux/device.h> +#include <linux/dma-mapping.h> +#include <linux/dmaengine.h> +#include <linux/sizes.h> +#include <linux/platform_device.h> +#include <linux/of.h> + +#include "musb_core.h" + +#define RNDIS_REG(x) (0x80 + ((x - 1) * 4)) + +#define EP_MODE_AUTOREG_NONE 0 +#define EP_MODE_AUTOREG_ALL_NEOP 1 +#define EP_MODE_AUTOREG_ALWAYS 3 + +#define EP_MODE_DMA_TRANSPARENT 0 +#define EP_MODE_DMA_RNDIS 1 +#define EP_MODE_DMA_GEN_RNDIS 3 + +#define USB_CTRL_TX_MODE 0x70 +#define USB_CTRL_RX_MODE 0x74 +#define USB_CTRL_AUTOREQ 0xd0 +#define USB_TDOWN 0xd8 + +struct cppi41_dma_channel { + struct dma_channel channel; + struct cppi41_dma_controller *controller; + struct musb_hw_ep *hw_ep; + struct dma_chan *dc; + dma_cookie_t cookie; + u8 port_num; + u8 is_tx; + u8 is_allocated; + u8 usb_toggle; + + dma_addr_t buf_addr; + u32 total_len; + u32 prog_len; + u32 transferred; + u32 packet_sz; + struct list_head tx_check; + struct work_struct dma_completion; +}; + +#define MUSB_DMA_NUM_CHANNELS 15 + +struct cppi41_dma_controller { + struct dma_controller controller; + struct cppi41_dma_channel rx_channel[MUSB_DMA_NUM_CHANNELS]; + struct cppi41_dma_channel tx_channel[MUSB_DMA_NUM_CHANNELS]; + struct musb *musb; + struct hrtimer early_tx; + struct list_head early_tx_list; + u32 rx_mode; + u32 tx_mode; + u32 auto_req; +}; + +static void save_rx_toggle(struct cppi41_dma_channel *cppi41_channel) +{ + u16 csr; + u8 toggle; + + if (cppi41_channel->is_tx) + return; + if (!is_host_active(cppi41_channel->controller->musb)) + return; + + csr = musb_readw(cppi41_channel->hw_ep->regs, MUSB_RXCSR); + toggle = csr & MUSB_RXCSR_H_DATATOGGLE ? 1 : 0; + + cppi41_channel->usb_toggle = toggle; +} + +static void update_rx_toggle(struct cppi41_dma_channel *cppi41_channel) +{ + u16 csr; + u8 toggle; + + if (cppi41_channel->is_tx) + return; + if (!is_host_active(cppi41_channel->controller->musb)) + return; + + csr = musb_readw(cppi41_channel->hw_ep->regs, MUSB_RXCSR); + toggle = csr & MUSB_RXCSR_H_DATATOGGLE ? 1 : 0; + + /* + * AM335x Advisory 1.0.13: Due to internal synchronisation error the + * data toggle may reset from DATA1 to DATA0 during receiving data from + * more than one endpoint. + */ + if (!toggle && toggle == cppi41_channel->usb_toggle) { + csr |= MUSB_RXCSR_H_DATATOGGLE | MUSB_RXCSR_H_WR_DATATOGGLE; + musb_writew(cppi41_channel->hw_ep->regs, MUSB_RXCSR, csr); + dev_dbg(cppi41_channel->controller->musb->controller, + "Restoring DATA1 toggle.\n"); + } + + cppi41_channel->usb_toggle = toggle; +} + +static bool musb_is_tx_fifo_empty(struct musb_hw_ep *hw_ep) +{ + u8 epnum = hw_ep->epnum; + struct musb *musb = hw_ep->musb; + void __iomem *epio = musb->endpoints[epnum].regs; + u16 csr; + + csr = musb_readw(epio, MUSB_TXCSR); + if (csr & MUSB_TXCSR_TXPKTRDY) + return false; + return true; +} + +static bool is_isoc(struct musb_hw_ep *hw_ep, bool in) +{ + if (in && hw_ep->in_qh) { + if (hw_ep->in_qh->type == USB_ENDPOINT_XFER_ISOC) + return true; + } else if (hw_ep->out_qh) { + if (hw_ep->out_qh->type == USB_ENDPOINT_XFER_ISOC) + return true; + } + return false; +} + +static void cppi41_dma_callback(void *private_data); + +static void cppi41_trans_done(struct cppi41_dma_channel *cppi41_channel) +{ + struct musb_hw_ep *hw_ep = cppi41_channel->hw_ep; + struct musb *musb = hw_ep->musb; + + if (!cppi41_channel->prog_len || + (cppi41_channel->channel.status == MUSB_DMA_STATUS_FREE)) { + + /* done, complete */ + cppi41_channel->channel.actual_len = + cppi41_channel->transferred; + cppi41_channel->channel.status = MUSB_DMA_STATUS_FREE; + musb_dma_completion(musb, hw_ep->epnum, cppi41_channel->is_tx); + } else { + /* next iteration, reload */ + struct dma_chan *dc = cppi41_channel->dc; + struct dma_async_tx_descriptor *dma_desc; + enum dma_transfer_direction direction; + u16 csr; + u32 remain_bytes; + void __iomem *epio = cppi41_channel->hw_ep->regs; + + cppi41_channel->buf_addr += cppi41_channel->packet_sz; + + remain_bytes = cppi41_channel->total_len; + remain_bytes -= cppi41_channel->transferred; + remain_bytes = min(remain_bytes, cppi41_channel->packet_sz); + cppi41_channel->prog_len = remain_bytes; + + direction = cppi41_channel->is_tx ? DMA_MEM_TO_DEV + : DMA_DEV_TO_MEM; + dma_desc = dmaengine_prep_slave_single(dc, + cppi41_channel->buf_addr, + remain_bytes, + direction, + DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + if (WARN_ON(!dma_desc)) + return; + + dma_desc->callback = cppi41_dma_callback; + dma_desc->callback_param = &cppi41_channel->channel; + cppi41_channel->cookie = dma_desc->tx_submit(dma_desc); + dma_async_issue_pending(dc); + + if (!cppi41_channel->is_tx) { + csr = musb_readw(epio, MUSB_RXCSR); + csr |= MUSB_RXCSR_H_REQPKT; + musb_writew(epio, MUSB_RXCSR, csr); + } + } +} + +static void cppi_trans_done_work(struct work_struct *work) +{ + unsigned long flags; + struct cppi41_dma_channel *cppi41_channel = + container_of(work, struct cppi41_dma_channel, dma_completion); + struct cppi41_dma_controller *controller = cppi41_channel->controller; + struct musb *musb = controller->musb; + struct musb_hw_ep *hw_ep = cppi41_channel->hw_ep; + bool empty; + + if (!cppi41_channel->is_tx && is_isoc(hw_ep, 1)) { + spin_lock_irqsave(&musb->lock, flags); + cppi41_trans_done(cppi41_channel); + spin_unlock_irqrestore(&musb->lock, flags); + } else { + empty = musb_is_tx_fifo_empty(hw_ep); + if (empty) { + spin_lock_irqsave(&musb->lock, flags); + cppi41_trans_done(cppi41_channel); + spin_unlock_irqrestore(&musb->lock, flags); + } else { + schedule_work(&cppi41_channel->dma_completion); + } + } +} + +static enum hrtimer_restart cppi41_recheck_tx_req(struct hrtimer *timer) +{ + struct cppi41_dma_controller *controller; + struct cppi41_dma_channel *cppi41_channel, *n; + struct musb *musb; + unsigned long flags; + enum hrtimer_restart ret = HRTIMER_NORESTART; + + controller = container_of(timer, struct cppi41_dma_controller, + early_tx); + musb = controller->musb; + + spin_lock_irqsave(&musb->lock, flags); + list_for_each_entry_safe(cppi41_channel, n, &controller->early_tx_list, + tx_check) { + bool empty; + struct musb_hw_ep *hw_ep = cppi41_channel->hw_ep; + + empty = musb_is_tx_fifo_empty(hw_ep); + if (empty) { + list_del_init(&cppi41_channel->tx_check); + cppi41_trans_done(cppi41_channel); + } + } + + if (!list_empty(&controller->early_tx_list)) { + ret = HRTIMER_RESTART; + hrtimer_forward_now(&controller->early_tx, + ktime_set(0, 150 * NSEC_PER_USEC)); + } + + spin_unlock_irqrestore(&musb->lock, flags); + return ret; +} + +static void cppi41_dma_callback(void *private_data) +{ + struct dma_channel *channel = private_data; + struct cppi41_dma_channel *cppi41_channel = channel->private_data; + struct musb_hw_ep *hw_ep = cppi41_channel->hw_ep; + struct musb *musb = hw_ep->musb; + unsigned long flags; + struct dma_tx_state txstate; + u32 transferred; + bool empty; + + spin_lock_irqsave(&musb->lock, flags); + + dmaengine_tx_status(cppi41_channel->dc, cppi41_channel->cookie, + &txstate); + transferred = cppi41_channel->prog_len - txstate.residue; + cppi41_channel->transferred += transferred; + + dev_dbg(musb->controller, "DMA transfer done on hw_ep=%d bytes=%d/%d\n", + hw_ep->epnum, cppi41_channel->transferred, + cppi41_channel->total_len); + + update_rx_toggle(cppi41_channel); + + if (cppi41_channel->transferred == cppi41_channel->total_len || + transferred < cppi41_channel->packet_sz) + cppi41_channel->prog_len = 0; + + if (!cppi41_channel->is_tx) { + if (is_isoc(hw_ep, 1)) + schedule_work(&cppi41_channel->dma_completion); + else + cppi41_trans_done(cppi41_channel); + goto out; + } + + empty = musb_is_tx_fifo_empty(hw_ep); + if (empty) { + cppi41_trans_done(cppi41_channel); + } else { + struct cppi41_dma_controller *controller; + /* + * On AM335x it has been observed that the TX interrupt fires + * too early that means the TXFIFO is not yet empty but the DMA + * engine says that it is done with the transfer. We don't + * receive a FIFO empty interrupt so the only thing we can do is + * to poll for the bit. On HS it usually takes 2us, on FS around + * 110us - 150us depending on the transfer size. + * We spin on HS (no longer than than 25us and setup a timer on + * FS to check for the bit and complete the transfer. + */ + controller = cppi41_channel->controller; + + if (musb->g.speed == USB_SPEED_HIGH) { + unsigned wait = 25; + + do { + empty = musb_is_tx_fifo_empty(hw_ep); + if (empty) + break; + wait--; + if (!wait) + break; + udelay(1); + } while (1); + + empty = musb_is_tx_fifo_empty(hw_ep); + if (empty) { + cppi41_trans_done(cppi41_channel); + goto out; + } + } + if (is_isoc(hw_ep, 0)) { + schedule_work(&cppi41_channel->dma_completion); + goto out; + } + list_add_tail(&cppi41_channel->tx_check, + &controller->early_tx_list); + if (!hrtimer_is_queued(&controller->early_tx)) { + hrtimer_start_range_ns(&controller->early_tx, + ktime_set(0, 140 * NSEC_PER_USEC), + 40 * NSEC_PER_USEC, + HRTIMER_MODE_REL); + } + } +out: + spin_unlock_irqrestore(&musb->lock, flags); +} + +static u32 update_ep_mode(unsigned ep, unsigned mode, u32 old) +{ + unsigned shift; + + shift = (ep - 1) * 2; + old &= ~(3 << shift); + old |= mode << shift; + return old; +} + +static void cppi41_set_dma_mode(struct cppi41_dma_channel *cppi41_channel, + unsigned mode) +{ + struct cppi41_dma_controller *controller = cppi41_channel->controller; + u32 port; + u32 new_mode; + u32 old_mode; + + if (cppi41_channel->is_tx) + old_mode = controller->tx_mode; + else + old_mode = controller->rx_mode; + port = cppi41_channel->port_num; + new_mode = update_ep_mode(port, mode, old_mode); + + if (new_mode == old_mode) + return; + if (cppi41_channel->is_tx) { + controller->tx_mode = new_mode; + musb_writel(controller->musb->ctrl_base, USB_CTRL_TX_MODE, + new_mode); + } else { + controller->rx_mode = new_mode; + musb_writel(controller->musb->ctrl_base, USB_CTRL_RX_MODE, + new_mode); + } +} + +static void cppi41_set_autoreq_mode(struct cppi41_dma_channel *cppi41_channel, + unsigned mode) +{ + struct cppi41_dma_controller *controller = cppi41_channel->controller; + u32 port; + u32 new_mode; + u32 old_mode; + + old_mode = controller->auto_req; + port = cppi41_channel->port_num; + new_mode = update_ep_mode(port, mode, old_mode); + + if (new_mode == old_mode) + return; + controller->auto_req = new_mode; + musb_writel(controller->musb->ctrl_base, USB_CTRL_AUTOREQ, new_mode); +} + +static bool cppi41_configure_channel(struct dma_channel *channel, + u16 packet_sz, u8 mode, + dma_addr_t dma_addr, u32 len) +{ + struct cppi41_dma_channel *cppi41_channel = channel->private_data; + struct dma_chan *dc = cppi41_channel->dc; + struct dma_async_tx_descriptor *dma_desc; + enum dma_transfer_direction direction; + struct musb *musb = cppi41_channel->controller->musb; + unsigned use_gen_rndis = 0; + + dev_dbg(musb->controller, + "configure ep%d/%x packet_sz=%d, mode=%d, dma_addr=0x%llx, len=%d is_tx=%d\n", + cppi41_channel->port_num, RNDIS_REG(cppi41_channel->port_num), + packet_sz, mode, (unsigned long long) dma_addr, + len, cppi41_channel->is_tx); + + cppi41_channel->buf_addr = dma_addr; + cppi41_channel->total_len = len; + cppi41_channel->transferred = 0; + cppi41_channel->packet_sz = packet_sz; + + /* + * Due to AM335x' Advisory 1.0.13 we are not allowed to transfer more + * than max packet size at a time. + */ + if (cppi41_channel->is_tx) + use_gen_rndis = 1; + + if (use_gen_rndis) { + /* RNDIS mode */ + if (len > packet_sz) { + musb_writel(musb->ctrl_base, + RNDIS_REG(cppi41_channel->port_num), len); + /* gen rndis */ + cppi41_set_dma_mode(cppi41_channel, + EP_MODE_DMA_GEN_RNDIS); + + /* auto req */ + cppi41_set_autoreq_mode(cppi41_channel, + EP_MODE_AUTOREG_ALL_NEOP); + } else { + musb_writel(musb->ctrl_base, + RNDIS_REG(cppi41_channel->port_num), 0); + cppi41_set_dma_mode(cppi41_channel, + EP_MODE_DMA_TRANSPARENT); + cppi41_set_autoreq_mode(cppi41_channel, + EP_MODE_AUTOREG_NONE); + } + } else { + /* fallback mode */ + cppi41_set_dma_mode(cppi41_channel, EP_MODE_DMA_TRANSPARENT); + cppi41_set_autoreq_mode(cppi41_channel, EP_MODE_AUTOREG_NONE); + len = min_t(u32, packet_sz, len); + } + cppi41_channel->prog_len = len; + direction = cppi41_channel->is_tx ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM; + dma_desc = dmaengine_prep_slave_single(dc, dma_addr, len, direction, + DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + if (!dma_desc) + return false; + + dma_desc->callback = cppi41_dma_callback; + dma_desc->callback_param = channel; + cppi41_channel->cookie = dma_desc->tx_submit(dma_desc); + + save_rx_toggle(cppi41_channel); + dma_async_issue_pending(dc); + return true; +} + +static struct dma_channel *cppi41_dma_channel_allocate(struct dma_controller *c, + struct musb_hw_ep *hw_ep, u8 is_tx) +{ + struct cppi41_dma_controller *controller = container_of(c, + struct cppi41_dma_controller, controller); + struct cppi41_dma_channel *cppi41_channel = NULL; + u8 ch_num = hw_ep->epnum - 1; + + if (ch_num >= MUSB_DMA_NUM_CHANNELS) + return NULL; + + if (is_tx) + cppi41_channel = &controller->tx_channel[ch_num]; + else + cppi41_channel = &controller->rx_channel[ch_num]; + + if (!cppi41_channel->dc) + return NULL; + + if (cppi41_channel->is_allocated) + return NULL; + + cppi41_channel->hw_ep = hw_ep; + cppi41_channel->is_allocated = 1; + + return &cppi41_channel->channel; +} + +static void cppi41_dma_channel_release(struct dma_channel *channel) +{ + struct cppi41_dma_channel *cppi41_channel = channel->private_data; + + if (cppi41_channel->is_allocated) { + cppi41_channel->is_allocated = 0; + channel->status = MUSB_DMA_STATUS_FREE; + channel->actual_len = 0; + } +} + +static int cppi41_dma_channel_program(struct dma_channel *channel, + u16 packet_sz, u8 mode, + dma_addr_t dma_addr, u32 len) +{ + int ret; + struct cppi41_dma_channel *cppi41_channel = channel->private_data; + int hb_mult = 0; + + BUG_ON(channel->status == MUSB_DMA_STATUS_UNKNOWN || + channel->status == MUSB_DMA_STATUS_BUSY); + + if (is_host_active(cppi41_channel->controller->musb)) { + if (cppi41_channel->is_tx) + hb_mult = cppi41_channel->hw_ep->out_qh->hb_mult; + else + hb_mult = cppi41_channel->hw_ep->in_qh->hb_mult; + } + + channel->status = MUSB_DMA_STATUS_BUSY; + channel->actual_len = 0; + + if (hb_mult) + packet_sz = hb_mult * (packet_sz & 0x7FF); + + ret = cppi41_configure_channel(channel, packet_sz, mode, dma_addr, len); + if (!ret) + channel->status = MUSB_DMA_STATUS_FREE; + + return ret; +} + +static int cppi41_is_compatible(struct dma_channel *channel, u16 maxpacket, + void *buf, u32 length) +{ + struct cppi41_dma_channel *cppi41_channel = channel->private_data; + struct cppi41_dma_controller *controller = cppi41_channel->controller; + struct musb *musb = controller->musb; + + if (is_host_active(musb)) { + WARN_ON(1); + return 1; + } + if (cppi41_channel->hw_ep->ep_in.type != USB_ENDPOINT_XFER_BULK) + return 0; + if (cppi41_channel->is_tx) + return 1; + /* AM335x Advisory 1.0.13. No workaround for device RX mode */ + return 0; +} + +static int cppi41_dma_channel_abort(struct dma_channel *channel) +{ + struct cppi41_dma_channel *cppi41_channel = channel->private_data; + struct cppi41_dma_controller *controller = cppi41_channel->controller; + struct musb *musb = controller->musb; + void __iomem *epio = cppi41_channel->hw_ep->regs; + int tdbit; + int ret; + unsigned is_tx; + u16 csr; + + is_tx = cppi41_channel->is_tx; + dev_dbg(musb->controller, "abort channel=%d, is_tx=%d\n", + cppi41_channel->port_num, is_tx); + + if (cppi41_channel->channel.status == MUSB_DMA_STATUS_FREE) + return 0; + + list_del_init(&cppi41_channel->tx_check); + if (is_tx) { + csr = musb_readw(epio, MUSB_TXCSR); + csr &= ~MUSB_TXCSR_DMAENAB; + musb_writew(epio, MUSB_TXCSR, csr); + } else { + csr = musb_readw(epio, MUSB_RXCSR); + csr &= ~(MUSB_RXCSR_H_REQPKT | MUSB_RXCSR_DMAENAB); + musb_writew(epio, MUSB_RXCSR, csr); + + csr = musb_readw(epio, MUSB_RXCSR); + if (csr & MUSB_RXCSR_RXPKTRDY) { + csr |= MUSB_RXCSR_FLUSHFIFO; + musb_writew(epio, MUSB_RXCSR, csr); + musb_writew(epio, MUSB_RXCSR, csr); + } + } + + tdbit = 1 << cppi41_channel->port_num; + if (is_tx) + tdbit <<= 16; + + do { + musb_writel(musb->ctrl_base, USB_TDOWN, tdbit); + ret = dmaengine_terminate_all(cppi41_channel->dc); + } while (ret == -EAGAIN); + + musb_writel(musb->ctrl_base, USB_TDOWN, tdbit); + + if (is_tx) { + csr = musb_readw(epio, MUSB_TXCSR); + if (csr & MUSB_TXCSR_TXPKTRDY) { + csr |= MUSB_TXCSR_FLUSHFIFO; + musb_writew(epio, MUSB_TXCSR, csr); + } + } + + cppi41_channel->channel.status = MUSB_DMA_STATUS_FREE; + return 0; +} + +static void cppi41_release_all_dma_chans(struct cppi41_dma_controller *ctrl) +{ + struct dma_chan *dc; + int i; + + for (i = 0; i < MUSB_DMA_NUM_CHANNELS; i++) { + dc = ctrl->tx_channel[i].dc; + if (dc) + dma_release_channel(dc); + dc = ctrl->rx_channel[i].dc; + if (dc) + dma_release_channel(dc); + } +} + +static void cppi41_dma_controller_stop(struct cppi41_dma_controller *controller) +{ + cppi41_release_all_dma_chans(controller); +} + +static int cppi41_dma_controller_start(struct cppi41_dma_controller *controller) +{ + struct musb *musb = controller->musb; + struct device *dev = musb->controller; + struct device_node *np = dev->of_node; + struct cppi41_dma_channel *cppi41_channel; + int count; + int i; + int ret; + + count = of_property_count_strings(np, "dma-names"); + if (count < 0) + return count; + + for (i = 0; i < count; i++) { + struct dma_chan *dc; + struct dma_channel *musb_dma; + const char *str; + unsigned is_tx; + unsigned int port; + + ret = of_property_read_string_index(np, "dma-names", i, &str); + if (ret) + goto err; + if (!strncmp(str, "tx", 2)) + is_tx = 1; + else if (!strncmp(str, "rx", 2)) + is_tx = 0; + else { + dev_err(dev, "Wrong dmatype %s\n", str); + goto err; + } + ret = kstrtouint(str + 2, 0, &port); + if (ret) + goto err; + + ret = -EINVAL; + if (port > MUSB_DMA_NUM_CHANNELS || !port) + goto err; + if (is_tx) + cppi41_channel = &controller->tx_channel[port - 1]; + else + cppi41_channel = &controller->rx_channel[port - 1]; + + cppi41_channel->controller = controller; + cppi41_channel->port_num = port; + cppi41_channel->is_tx = is_tx; + INIT_LIST_HEAD(&cppi41_channel->tx_check); + INIT_WORK(&cppi41_channel->dma_completion, + cppi_trans_done_work); + + musb_dma = &cppi41_channel->channel; + musb_dma->private_data = cppi41_channel; + musb_dma->status = MUSB_DMA_STATUS_FREE; + musb_dma->max_len = SZ_4M; + + dc = dma_request_slave_channel(dev, str); + if (!dc) { + dev_err(dev, "Failed to request %s.\n", str); + ret = -EPROBE_DEFER; + goto err; + } + cppi41_channel->dc = dc; + } + return 0; +err: + cppi41_release_all_dma_chans(controller); + return ret; +} + +void dma_controller_destroy(struct dma_controller *c) +{ + struct cppi41_dma_controller *controller = container_of(c, + struct cppi41_dma_controller, controller); + + hrtimer_cancel(&controller->early_tx); + cppi41_dma_controller_stop(controller); + kfree(controller); +} + +struct dma_controller *dma_controller_create(struct musb *musb, + void __iomem *base) +{ + struct cppi41_dma_controller *controller; + int ret = 0; + + if (!musb->controller->of_node) { + dev_err(musb->controller, "Need DT for the DMA engine.\n"); + return NULL; + } + + controller = kzalloc(sizeof(*controller), GFP_KERNEL); + if (!controller) + goto kzalloc_fail; + + hrtimer_init(&controller->early_tx, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + controller->early_tx.function = cppi41_recheck_tx_req; + INIT_LIST_HEAD(&controller->early_tx_list); + controller->musb = musb; + + controller->controller.channel_alloc = cppi41_dma_channel_allocate; + controller->controller.channel_release = cppi41_dma_channel_release; + controller->controller.channel_program = cppi41_dma_channel_program; + controller->controller.channel_abort = cppi41_dma_channel_abort; + controller->controller.is_compatible = cppi41_is_compatible; + + ret = cppi41_dma_controller_start(controller); + if (ret) + goto plat_get_fail; + return &controller->controller; + +plat_get_fail: + kfree(controller); +kzalloc_fail: + if (ret == -EPROBE_DEFER) + return ERR_PTR(ret); + return NULL; +} diff --git a/drivers/usb/musb/musb_dma.h b/drivers/usb/musb/musb_dma.h index 1b6b827b769..1345a4ff041 100644 --- a/drivers/usb/musb/musb_dma.h +++ b/drivers/usb/musb/musb_dma.h @@ -62,13 +62,13 @@ struct musb_hw_ep; #define DMA_ADDR_INVALID (~(dma_addr_t)0) -#ifndef CONFIG_MUSB_PIO_ONLY -#define is_dma_capable() (1) -#else +#ifdef CONFIG_MUSB_PIO_ONLY #define is_dma_capable() (0) +#else +#define is_dma_capable() (1) #endif -#ifdef CONFIG_USB_TI_CPPI_DMA +#if defined(CONFIG_USB_TI_CPPI_DMA) || defined(CONFIG_USB_TI_CPPI41_DMA) #define is_cppi_enabled() 1 #else #define is_cppi_enabled() 0 @@ -159,8 +159,6 @@ dma_channel_status(struct dma_channel *c) * Controllers manage dma channels. */ struct dma_controller { - int (*start)(struct dma_controller *); - int (*stop)(struct dma_controller *); struct dma_channel *(*channel_alloc)(struct dma_controller *, struct musb_hw_ep *, u8 is_tx); void (*channel_release)(struct dma_channel *); @@ -177,9 +175,20 @@ struct dma_controller { /* called after channel_program(), may indicate a fault */ extern void musb_dma_completion(struct musb *musb, u8 epnum, u8 transmit); +#ifdef CONFIG_MUSB_PIO_ONLY +static inline struct dma_controller *dma_controller_create(struct musb *m, + void __iomem *io) +{ + return NULL; +} + +static inline void dma_controller_destroy(struct dma_controller *d) { } + +#else extern struct dma_controller *dma_controller_create(struct musb *, void __iomem *); extern void dma_controller_destroy(struct dma_controller *); +#endif #endif /* __MUSB_DMA_H__ */ diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index f7d764de6fd..09529f94e72 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -29,26 +29,27 @@ * da8xx.c would be merged to this file after testing. */ -#include <linux/init.h> #include <linux/io.h> -#include <linux/of.h> #include <linux/err.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/pm_runtime.h> #include <linux/module.h> -#include <linux/usb/nop-usb-xceiv.h> +#include <linux/usb/usb_phy_generic.h> #include <linux/platform_data/usb-omap.h> +#include <linux/sizes.h> #include <linux/of.h> #include <linux/of_device.h> #include <linux/of_address.h> +#include <linux/of_irq.h> +#include <linux/usb/of.h> + +#include <linux/debugfs.h> #include "musb_core.h" -#ifdef CONFIG_OF static const struct of_device_id musb_dsps_of_match[]; -#endif /** * avoid using musb_readx()/musb_writex() as glue layer should not be @@ -75,7 +76,6 @@ struct dsps_musb_wrapper { u16 revision; u16 control; u16 status; - u16 eoi; u16 epintr_set; u16 epintr_clear; u16 epintr_status; @@ -84,6 +84,8 @@ struct dsps_musb_wrapper { u16 coreintr_status; u16 phy_utmi; u16 mode; + u16 tx_mode; + u16 rx_mode; /* bit positions for control */ unsigned reset:5; @@ -107,11 +109,22 @@ struct dsps_musb_wrapper { /* bit positions for mode */ unsigned iddig:5; + unsigned iddig_mux:5; /* miscellaneous stuff */ - u32 musb_core_offset; u8 poll_seconds; - /* number of musb instances */ - u8 instances; +}; + +/* + * register shadow for suspend + */ +struct dsps_context { + u32 control; + u32 epintr; + u32 coreintr; + u32 phy_utmi; + u32 mode; + u32 tx_mode; + u32 rx_mode; }; /** @@ -119,53 +132,71 @@ struct dsps_musb_wrapper { */ struct dsps_glue { struct device *dev; - struct platform_device *musb[2]; /* child musb pdev */ + struct platform_device *musb; /* child musb pdev */ const struct dsps_musb_wrapper *wrp; /* wrapper register offsets */ - struct timer_list timer[2]; /* otg_workaround timer */ - unsigned long last_timer[2]; /* last timer data for each instance */ - u32 __iomem *usb_ctrl[2]; -}; - -#define DSPS_AM33XX_CONTROL_MODULE_PHYS_0 0x44e10620 -#define DSPS_AM33XX_CONTROL_MODULE_PHYS_1 0x44e10628 + struct timer_list timer; /* otg_workaround timer */ + unsigned long last_timer; /* last timer data for each instance */ -static const resource_size_t dsps_control_module_phys[] = { - DSPS_AM33XX_CONTROL_MODULE_PHYS_0, - DSPS_AM33XX_CONTROL_MODULE_PHYS_1, + struct dsps_context context; + struct debugfs_regset32 regset; + struct dentry *dbgfs_root; }; -#define USBPHY_CM_PWRDN (1 << 0) -#define USBPHY_OTG_PWRDN (1 << 1) -#define USBPHY_OTGVDET_EN (1 << 19) -#define USBPHY_OTGSESSEND_EN (1 << 20) +static const struct debugfs_reg32 dsps_musb_regs[] = { + { "revision", 0x00 }, + { "control", 0x14 }, + { "status", 0x18 }, + { "eoi", 0x24 }, + { "intr0_stat", 0x30 }, + { "intr1_stat", 0x34 }, + { "intr0_set", 0x38 }, + { "intr1_set", 0x3c }, + { "txmode", 0x70 }, + { "rxmode", 0x74 }, + { "autoreq", 0xd0 }, + { "srpfixtime", 0xd4 }, + { "tdown", 0xd8 }, + { "phy_utmi", 0xe0 }, + { "mode", 0xe8 }, +}; -/** - * musb_dsps_phy_control - phy on/off - * @glue: struct dsps_glue * - * @id: musb instance - * @on: flag for phy to be switched on or off - * - * This is to enable the PHY using usb_ctrl register in system control - * module space. - * - * XXX: This function will be removed once we have a seperate driver for - * control module - */ -static void musb_dsps_phy_control(struct dsps_glue *glue, u8 id, u8 on) +static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout) { - u32 usbphycfg; + struct device *dev = musb->controller; + struct dsps_glue *glue = dev_get_drvdata(dev->parent); - usbphycfg = readl(glue->usb_ctrl[id]); + if (timeout == 0) + timeout = jiffies + msecs_to_jiffies(3); - if (on) { - usbphycfg &= ~(USBPHY_CM_PWRDN | USBPHY_OTG_PWRDN); - usbphycfg |= USBPHY_OTGVDET_EN | USBPHY_OTGSESSEND_EN; - } else { - usbphycfg |= USBPHY_CM_PWRDN | USBPHY_OTG_PWRDN; + /* Never idle if active, or when VBUS timeout is not set as host */ + if (musb->is_active || (musb->a_wait_bcon == 0 && + musb->xceiv->state == OTG_STATE_A_WAIT_BCON)) { + dev_dbg(musb->controller, "%s active, deleting timer\n", + usb_otg_state_string(musb->xceiv->state)); + del_timer(&glue->timer); + glue->last_timer = jiffies; + return; } + if (musb->port_mode != MUSB_PORT_MODE_DUAL_ROLE) + return; - writel(usbphycfg, glue->usb_ctrl[id]); + if (!musb->g.dev.driver) + return; + + if (time_after(glue->last_timer, timeout) && + timer_pending(&glue->timer)) { + dev_dbg(musb->controller, + "Longer idle timer already pending, ignoring...\n"); + return; + } + glue->last_timer = timeout; + + dev_dbg(musb->controller, "%s inactive, starting idle timer for %u ms\n", + usb_otg_state_string(musb->xceiv->state), + jiffies_to_msecs(timeout - jiffies)); + mod_timer(&glue->timer, timeout); } + /** * dsps_musb_enable - enable interrupts */ @@ -188,6 +219,7 @@ static void dsps_musb_enable(struct musb *musb) /* Force the DRVVBUS IRQ so we can start polling for ID change. */ dsps_writel(reg_base, wrp->coreintr_set, (1 << wrp->drvvbus) << wrp->usb_shift); + dsps_musb_try_idle(musb, 0); } /** @@ -205,7 +237,6 @@ static void dsps_musb_disable(struct musb *musb) dsps_writel(reg_base, wrp->epintr_clear, wrp->txep_bitmap | wrp->rxep_bitmap); dsps_writeb(musb->mregs, MUSB_DEVCTL, 0); - dsps_writel(reg_base, wrp->eoi, 0); } static void otg_timer(unsigned long _musb) @@ -213,11 +244,11 @@ static void otg_timer(unsigned long _musb) struct musb *musb = (void *)_musb; void __iomem *mregs = musb->mregs; struct device *dev = musb->controller; - struct platform_device *pdev = to_platform_device(dev); struct dsps_glue *glue = dev_get_drvdata(dev->parent); const struct dsps_musb_wrapper *wrp = glue->wrp; u8 devctl; unsigned long flags; + int skip_session = 0; /* * We poll because DSPS IP's won't expose several OTG-critical @@ -225,15 +256,17 @@ static void otg_timer(unsigned long _musb) */ devctl = dsps_readb(mregs, MUSB_DEVCTL); dev_dbg(musb->controller, "Poll devctl %02x (%s)\n", devctl, - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); spin_lock_irqsave(&musb->lock, flags); switch (musb->xceiv->state) { case OTG_STATE_A_WAIT_BCON: - devctl &= ~MUSB_DEVCTL_SESSION; - dsps_writeb(musb->mregs, MUSB_DEVCTL, devctl); + dsps_writeb(musb->mregs, MUSB_DEVCTL, 0); + skip_session = 1; + /* fall */ - devctl = dsps_readb(musb->mregs, MUSB_DEVCTL); + case OTG_STATE_A_IDLE: + case OTG_STATE_B_IDLE: if (devctl & MUSB_DEVCTL_BDEVICE) { musb->xceiv->state = OTG_STATE_B_IDLE; MUSB_DEV_MODE(musb); @@ -241,65 +274,26 @@ static void otg_timer(unsigned long _musb) musb->xceiv->state = OTG_STATE_A_IDLE; MUSB_HST_MODE(musb); } + if (!(devctl & MUSB_DEVCTL_SESSION) && !skip_session) + dsps_writeb(mregs, MUSB_DEVCTL, MUSB_DEVCTL_SESSION); + mod_timer(&glue->timer, jiffies + wrp->poll_seconds * HZ); break; case OTG_STATE_A_WAIT_VFALL: musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; dsps_writel(musb->ctrl_base, wrp->coreintr_set, MUSB_INTR_VBUSERROR << wrp->usb_shift); break; - case OTG_STATE_B_IDLE: - devctl = dsps_readb(mregs, MUSB_DEVCTL); - if (devctl & MUSB_DEVCTL_BDEVICE) - mod_timer(&glue->timer[pdev->id], - jiffies + wrp->poll_seconds * HZ); - else - musb->xceiv->state = OTG_STATE_A_IDLE; - break; default: break; } spin_unlock_irqrestore(&musb->lock, flags); } -static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout) -{ - struct device *dev = musb->controller; - struct platform_device *pdev = to_platform_device(dev); - struct dsps_glue *glue = dev_get_drvdata(dev->parent); - - if (timeout == 0) - timeout = jiffies + msecs_to_jiffies(3); - - /* Never idle if active, or when VBUS timeout is not set as host */ - if (musb->is_active || (musb->a_wait_bcon == 0 && - musb->xceiv->state == OTG_STATE_A_WAIT_BCON)) { - dev_dbg(musb->controller, "%s active, deleting timer\n", - otg_state_string(musb->xceiv->state)); - del_timer(&glue->timer[pdev->id]); - glue->last_timer[pdev->id] = jiffies; - return; - } - - if (time_after(glue->last_timer[pdev->id], timeout) && - timer_pending(&glue->timer[pdev->id])) { - dev_dbg(musb->controller, - "Longer idle timer already pending, ignoring...\n"); - return; - } - glue->last_timer[pdev->id] = timeout; - - dev_dbg(musb->controller, "%s inactive, starting idle timer for %u ms\n", - otg_state_string(musb->xceiv->state), - jiffies_to_msecs(timeout - jiffies)); - mod_timer(&glue->timer[pdev->id], timeout); -} - static irqreturn_t dsps_interrupt(int irq, void *hci) { struct musb *musb = hci; void __iomem *reg_base = musb->ctrl_base; struct device *dev = musb->controller; - struct platform_device *pdev = to_platform_device(dev); struct dsps_glue *glue = dev_get_drvdata(dev->parent); const struct dsps_musb_wrapper *wrp = glue->wrp; unsigned long flags; @@ -319,7 +313,7 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) /* Get usb core interrupts */ usbintr = dsps_readl(reg_base, wrp->coreintr_status); if (!usbintr && !epintr) - goto eoi; + goto out; musb->int_usb = (usbintr & wrp->usb_bitmap) >> wrp->usb_shift; if (usbintr) @@ -335,9 +329,21 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) * value but DEVCTL.BDEVICE is invalid without DEVCTL.SESSION set. * Also, DRVVBUS pulses for SRP (but not at 5V) ... */ - if (usbintr & MUSB_INTR_BABBLE) + if (is_host_active(musb) && usbintr & MUSB_INTR_BABBLE) { pr_info("CAUTION: musb: Babble Interrupt Occurred\n"); + /* + * When a babble condition occurs, the musb controller removes + * the session and is no longer in host mode. Hence, all + * devices connected to its root hub get disconnected. + * + * Hand this error down to the musb core isr, so it can + * recover. + */ + musb->int_usb = MUSB_INTR_BABBLE | MUSB_INTR_DISCONNECT; + musb->int_tx = musb->int_rx = 0; + } + if (usbintr & ((1 << wrp->drvvbus) << wrp->usb_shift)) { int drvvbus = dsps_readl(reg_base, wrp->status); void __iomem *mregs = musb->mregs; @@ -359,15 +365,14 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) */ musb->int_usb &= ~MUSB_INTR_VBUSERROR; musb->xceiv->state = OTG_STATE_A_WAIT_VFALL; - mod_timer(&glue->timer[pdev->id], + mod_timer(&glue->timer, jiffies + wrp->poll_seconds * HZ); WARNING("VBUS error workaround (delay coming)\n"); } else if (drvvbus) { - musb->is_active = 1; MUSB_HST_MODE(musb); musb->xceiv->otg->default_a = 1; musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; - del_timer(&glue->timer[pdev->id]); + del_timer(&glue->timer); } else { musb->is_active = 0; MUSB_DEV_MODE(musb); @@ -378,7 +383,7 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) /* NOTE: this must complete power-on within 100 ms. */ dev_dbg(musb->controller, "VBUS %s (%s)%s, devctl %02x\n", drvvbus ? "on" : "off", - otg_state_string(musb->xceiv->state), + usb_otg_state_string(musb->xceiv->state), err ? " ERROR" : "", devctl); ret = IRQ_HANDLED; @@ -387,55 +392,76 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) if (musb->int_tx || musb->int_rx || musb->int_usb) ret |= musb_interrupt(musb); - eoi: - /* EOI needs to be written for the IRQ to be re-asserted. */ - if (ret == IRQ_HANDLED || epintr || usbintr) - dsps_writel(reg_base, wrp->eoi, 1); - - /* Poll for ID change */ - if (musb->xceiv->state == OTG_STATE_B_IDLE) - mod_timer(&glue->timer[pdev->id], - jiffies + wrp->poll_seconds * HZ); - + /* Poll for ID change in OTG port mode */ + if (musb->xceiv->state == OTG_STATE_B_IDLE && + musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE) + mod_timer(&glue->timer, jiffies + wrp->poll_seconds * HZ); +out: spin_unlock_irqrestore(&musb->lock, flags); return ret; } +static int dsps_musb_dbg_init(struct musb *musb, struct dsps_glue *glue) +{ + struct dentry *root; + struct dentry *file; + char buf[128]; + + sprintf(buf, "%s.dsps", dev_name(musb->controller)); + root = debugfs_create_dir(buf, NULL); + if (!root) + return -ENOMEM; + glue->dbgfs_root = root; + + glue->regset.regs = dsps_musb_regs; + glue->regset.nregs = ARRAY_SIZE(dsps_musb_regs); + glue->regset.base = musb->ctrl_base; + + file = debugfs_create_regset32("regdump", S_IRUGO, root, &glue->regset); + if (!file) { + debugfs_remove_recursive(root); + return -ENOMEM; + } + return 0; +} + static int dsps_musb_init(struct musb *musb) { struct device *dev = musb->controller; - struct platform_device *pdev = to_platform_device(dev); struct dsps_glue *glue = dev_get_drvdata(dev->parent); + struct platform_device *parent = to_platform_device(dev->parent); const struct dsps_musb_wrapper *wrp = glue->wrp; - void __iomem *reg_base = musb->ctrl_base; + void __iomem *reg_base; + struct resource *r; u32 rev, val; - int status; + int ret; + + r = platform_get_resource_byname(parent, IORESOURCE_MEM, "control"); + if (!r) + return -EINVAL; - /* mentor core register starts at offset of 0x400 from musb base */ - musb->mregs += wrp->musb_core_offset; + reg_base = devm_ioremap_resource(dev, r); + if (IS_ERR(reg_base)) + return PTR_ERR(reg_base); + musb->ctrl_base = reg_base; /* NOP driver needs change if supporting dual instance */ - usb_nop_xceiv_register(); - musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); - if (IS_ERR_OR_NULL(musb->xceiv)) - return -ENODEV; + musb->xceiv = devm_usb_get_phy_by_phandle(dev, "phys", 0); + if (IS_ERR(musb->xceiv)) + return PTR_ERR(musb->xceiv); /* Returns zero if e.g. not clocked */ rev = dsps_readl(reg_base, wrp->revision); - if (!rev) { - status = -ENODEV; - goto err0; - } + if (!rev) + return -ENODEV; - setup_timer(&glue->timer[pdev->id], otg_timer, (unsigned long) musb); + usb_phy_init(musb->xceiv); + setup_timer(&glue->timer, otg_timer, (unsigned long) musb); /* Reset the musb */ dsps_writel(reg_base, wrp->control, (1 << wrp->reset)); - /* Start the on-chip PHY and its PLL. */ - musb_dsps_phy_control(glue, pdev->id, 1); - musb->isr = dsps_interrupt; /* reset the otgdisable bit, needed for host mode to work */ @@ -443,34 +469,82 @@ static int dsps_musb_init(struct musb *musb) val &= ~(1 << wrp->otg_disable); dsps_writel(musb->ctrl_base, wrp->phy_utmi, val); - /* clear level interrupt */ - dsps_writel(reg_base, wrp->eoi, 0); + ret = dsps_musb_dbg_init(musb, glue); + if (ret) + return ret; return 0; -err0: - usb_put_phy(musb->xceiv); - usb_nop_xceiv_unregister(); - return status; } static int dsps_musb_exit(struct musb *musb) { struct device *dev = musb->controller; - struct platform_device *pdev = to_platform_device(dev); struct dsps_glue *glue = dev_get_drvdata(dev->parent); - del_timer_sync(&glue->timer[pdev->id]); + del_timer_sync(&glue->timer); + usb_phy_shutdown(musb->xceiv); + debugfs_remove_recursive(glue->dbgfs_root); - /* Shutdown the on-chip PHY and its PLL. */ - musb_dsps_phy_control(glue, pdev->id, 0); + return 0; +} - /* NOP driver needs change if supporting dual instance */ - usb_put_phy(musb->xceiv); - usb_nop_xceiv_unregister(); +static int dsps_musb_set_mode(struct musb *musb, u8 mode) +{ + struct device *dev = musb->controller; + struct dsps_glue *glue = dev_get_drvdata(dev->parent); + const struct dsps_musb_wrapper *wrp = glue->wrp; + void __iomem *ctrl_base = musb->ctrl_base; + u32 reg; + + reg = dsps_readl(ctrl_base, wrp->mode); + + switch (mode) { + case MUSB_HOST: + reg &= ~(1 << wrp->iddig); + + /* + * if we're setting mode to host-only or device-only, we're + * going to ignore whatever the PHY sends us and just force + * ID pin status by SW + */ + reg |= (1 << wrp->iddig_mux); + + dsps_writel(ctrl_base, wrp->mode, reg); + dsps_writel(ctrl_base, wrp->phy_utmi, 0x02); + break; + case MUSB_PERIPHERAL: + reg |= (1 << wrp->iddig); + + /* + * if we're setting mode to host-only or device-only, we're + * going to ignore whatever the PHY sends us and just force + * ID pin status by SW + */ + reg |= (1 << wrp->iddig_mux); + + dsps_writel(ctrl_base, wrp->mode, reg); + break; + case MUSB_OTG: + dsps_writel(ctrl_base, wrp->phy_utmi, 0x02); + break; + default: + dev_err(glue->dev, "unsupported mode %d\n", mode); + return -EINVAL; + } return 0; } +static void dsps_musb_reset(struct musb *musb) +{ + struct device *dev = musb->controller; + struct dsps_glue *glue = dev_get_drvdata(dev->parent); + const struct dsps_musb_wrapper *wrp = glue->wrp; + + dsps_writel(musb->ctrl_base, wrp->control, (1 << wrp->reset)); + udelay(100); +} + static struct musb_platform_ops dsps_ops = { .init = dsps_musb_init, .exit = dsps_musb_exit, @@ -479,167 +553,153 @@ static struct musb_platform_ops dsps_ops = { .disable = dsps_musb_disable, .try_idle = dsps_musb_try_idle, + .set_mode = dsps_musb_set_mode, + .reset = dsps_musb_reset, }; static u64 musb_dmamask = DMA_BIT_MASK(32); -static int dsps_create_musb_pdev(struct dsps_glue *glue, u8 id) +static int get_int_prop(struct device_node *dn, const char *s) { - struct device *dev = glue->dev; - struct platform_device *pdev = to_platform_device(dev); - struct musb_hdrc_platform_data *pdata = dev->platform_data; - struct device_node *np = pdev->dev.of_node; - struct musb_hdrc_config *config; - struct platform_device *musb; - struct resource *res; - struct resource resources[2]; - char res_name[11]; int ret; + u32 val; + + ret = of_property_read_u32(dn, s, &val); + if (ret) + return 0; + return val; +} + +static int get_musb_port_mode(struct device *dev) +{ + enum usb_dr_mode mode; - resources[0].start = dsps_control_module_phys[id]; - resources[0].end = resources[0].start + SZ_4 - 1; - resources[0].flags = IORESOURCE_MEM; + mode = of_usb_get_dr_mode(dev->of_node); + switch (mode) { + case USB_DR_MODE_HOST: + return MUSB_PORT_MODE_HOST; - glue->usb_ctrl[id] = devm_request_and_ioremap(&pdev->dev, resources); - if (glue->usb_ctrl[id] == NULL) { - dev_err(dev, "Failed to obtain usb_ctrl%d memory\n", id); - ret = -ENODEV; - goto err0; + case USB_DR_MODE_PERIPHERAL: + return MUSB_PORT_MODE_GADGET; + + case USB_DR_MODE_UNKNOWN: + case USB_DR_MODE_OTG: + default: + return MUSB_PORT_MODE_DUAL_ROLE; } +} + +static int dsps_create_musb_pdev(struct dsps_glue *glue, + struct platform_device *parent) +{ + struct musb_hdrc_platform_data pdata; + struct resource resources[2]; + struct resource *res; + struct device *dev = &parent->dev; + struct musb_hdrc_config *config; + struct platform_device *musb; + struct device_node *dn = parent->dev.of_node; + int ret; - /* first resource is for usbss, so start index from 1 */ - res = platform_get_resource(pdev, IORESOURCE_MEM, id + 1); + memset(resources, 0, sizeof(resources)); + res = platform_get_resource_byname(parent, IORESOURCE_MEM, "mc"); if (!res) { - dev_err(dev, "failed to get memory for instance %d\n", id); - ret = -ENODEV; - goto err0; + dev_err(dev, "failed to get memory.\n"); + return -EINVAL; } - res->parent = NULL; resources[0] = *res; - /* first resource is for usbss, so start index from 1 */ - res = platform_get_resource(pdev, IORESOURCE_IRQ, id + 1); + res = platform_get_resource_byname(parent, IORESOURCE_IRQ, "mc"); if (!res) { - dev_err(dev, "failed to get irq for instance %d\n", id); - ret = -ENODEV; - goto err0; + dev_err(dev, "failed to get irq.\n"); + return -EINVAL; } - res->parent = NULL; resources[1] = *res; - resources[1].name = "mc"; /* allocate the child platform device */ musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); if (!musb) { dev_err(dev, "failed to allocate musb device\n"); - ret = -ENOMEM; - goto err0; + return -ENOMEM; } musb->dev.parent = dev; musb->dev.dma_mask = &musb_dmamask; musb->dev.coherent_dma_mask = musb_dmamask; + musb->dev.of_node = of_node_get(dn); - glue->musb[id] = musb; + glue->musb = musb; - ret = platform_device_add_resources(musb, resources, 2); + ret = platform_device_add_resources(musb, resources, + ARRAY_SIZE(resources)); if (ret) { dev_err(dev, "failed to add resources\n"); - goto err2; + goto err; } - if (np) { - pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); - if (!pdata) { - dev_err(&pdev->dev, - "failed to allocate musb platfrom data\n"); - ret = -ENOMEM; - goto err2; - } - - config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL); - if (!config) { - dev_err(&pdev->dev, - "failed to allocate musb hdrc config\n"); - goto err2; - } - - of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps); - of_property_read_u32(np, "ram-bits", (u32 *)&config->ram_bits); - snprintf(res_name, sizeof(res_name), "port%d-mode", id); - of_property_read_u32(np, res_name, (u32 *)&pdata->mode); - of_property_read_u32(np, "power", (u32 *)&pdata->power); - config->multipoint = of_property_read_bool(np, "multipoint"); - - pdata->config = config; + config = devm_kzalloc(&parent->dev, sizeof(*config), GFP_KERNEL); + if (!config) { + dev_err(dev, "failed to allocate musb hdrc config\n"); + ret = -ENOMEM; + goto err; } - - pdata->platform_ops = &dsps_ops; - - ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); + pdata.config = config; + pdata.platform_ops = &dsps_ops; + + config->num_eps = get_int_prop(dn, "mentor,num-eps"); + config->ram_bits = get_int_prop(dn, "mentor,ram-bits"); + config->host_port_deassert_reset_at_resume = 1; + pdata.mode = get_musb_port_mode(dev); + /* DT keeps this entry in mA, musb expects it as per USB spec */ + pdata.power = get_int_prop(dn, "mentor,power") / 2; + config->multipoint = of_property_read_bool(dn, "mentor,multipoint"); + + ret = platform_device_add_data(musb, &pdata, sizeof(pdata)); if (ret) { dev_err(dev, "failed to add platform_data\n"); - goto err2; + goto err; } ret = platform_device_add(musb); if (ret) { dev_err(dev, "failed to register musb device\n"); - goto err2; + goto err; } - return 0; -err2: +err: platform_device_put(musb); -err0: return ret; } static int dsps_probe(struct platform_device *pdev) { - struct device_node *np = pdev->dev.of_node; const struct of_device_id *match; const struct dsps_musb_wrapper *wrp; struct dsps_glue *glue; - struct resource *iomem; - int ret, i; + int ret; + + if (!strcmp(pdev->name, "musb-hdrc")) + return -ENODEV; - match = of_match_node(musb_dsps_of_match, np); + match = of_match_node(musb_dsps_of_match, pdev->dev.of_node); if (!match) { dev_err(&pdev->dev, "fail to get matching of_match struct\n"); - ret = -EINVAL; - goto err0; + return -EINVAL; } wrp = match->data; /* allocate glue */ - glue = kzalloc(sizeof(*glue), GFP_KERNEL); + glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); if (!glue) { dev_err(&pdev->dev, "unable to allocate glue memory\n"); - ret = -ENOMEM; - goto err0; - } - - /* get memory resource */ - iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!iomem) { - dev_err(&pdev->dev, "failed to get usbss mem resourse\n"); - ret = -ENODEV; - goto err1; + return -ENOMEM; } glue->dev = &pdev->dev; + glue->wrp = wrp; - glue->wrp = kmemdup(wrp, sizeof(*wrp), GFP_KERNEL); - if (!glue->wrp) { - dev_err(&pdev->dev, "failed to duplicate wrapper struct memory\n"); - ret = -ENOMEM; - goto err1; - } platform_set_drvdata(pdev, glue); - - /* enable the usbss clocks */ pm_runtime_enable(&pdev->dev); ret = pm_runtime_get_sync(&pdev->dev); @@ -648,17 +708,9 @@ static int dsps_probe(struct platform_device *pdev) goto err2; } - /* create the child platform device for all instances of musb */ - for (i = 0; i < wrp->instances ; i++) { - ret = dsps_create_musb_pdev(glue, i); - if (ret != 0) { - dev_err(&pdev->dev, "failed to create child pdev\n"); - /* release resources of previously created instances */ - for (i--; i >= 0 ; i--) - platform_device_unregister(glue->musb[i]); - goto err3; - } - } + ret = dsps_create_musb_pdev(glue, pdev); + if (ret) + goto err3; return 0; @@ -666,65 +718,26 @@ err3: pm_runtime_put(&pdev->dev); err2: pm_runtime_disable(&pdev->dev); - kfree(glue->wrp); -err1: - kfree(glue); -err0: return ret; } + static int dsps_remove(struct platform_device *pdev) { struct dsps_glue *glue = platform_get_drvdata(pdev); - const struct dsps_musb_wrapper *wrp = glue->wrp; - int i; - /* delete the child platform device */ - for (i = 0; i < wrp->instances ; i++) - platform_device_unregister(glue->musb[i]); + platform_device_unregister(glue->musb); /* disable usbss clocks */ pm_runtime_put(&pdev->dev); pm_runtime_disable(&pdev->dev); - kfree(glue->wrp); - kfree(glue); - return 0; -} - -#ifdef CONFIG_PM_SLEEP -static int dsps_suspend(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev->parent); - struct dsps_glue *glue = platform_get_drvdata(pdev); - const struct dsps_musb_wrapper *wrp = glue->wrp; - int i; - - for (i = 0; i < wrp->instances; i++) - musb_dsps_phy_control(glue, i, 0); return 0; } -static int dsps_resume(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev->parent); - struct dsps_glue *glue = platform_get_drvdata(pdev); - const struct dsps_musb_wrapper *wrp = glue->wrp; - int i; - - for (i = 0; i < wrp->instances; i++) - musb_dsps_phy_control(glue, i, 1); - - return 0; -} -#endif - -static SIMPLE_DEV_PM_OPS(dsps_pm_ops, dsps_suspend, dsps_resume); - -static const struct dsps_musb_wrapper ti81xx_driver_data = { +static const struct dsps_musb_wrapper am33xx_driver_data = { .revision = 0x00, .control = 0x14, .status = 0x18, - .eoi = 0x24, .epintr_set = 0x38, .epintr_clear = 0x40, .epintr_status = 0x30, @@ -733,9 +746,12 @@ static const struct dsps_musb_wrapper ti81xx_driver_data = { .coreintr_status = 0x34, .phy_utmi = 0xe0, .mode = 0xe8, + .tx_mode = 0x70, + .rx_mode = 0x74, .reset = 0, .otg_disable = 21, .iddig = 8, + .iddig_mux = 7, .usb_shift = 0, .usb_mask = 0x1ff, .usb_bitmap = (0x1ff << 0), @@ -746,38 +762,64 @@ static const struct dsps_musb_wrapper ti81xx_driver_data = { .rxep_shift = 16, .rxep_mask = 0xfffe, .rxep_bitmap = (0xfffe << 16), - .musb_core_offset = 0x400, .poll_seconds = 2, - .instances = 1, -}; - -static const struct platform_device_id musb_dsps_id_table[] = { - { - .name = "musb-ti81xx", - .driver_data = (kernel_ulong_t) &ti81xx_driver_data, - }, - { }, /* Terminating Entry */ }; -MODULE_DEVICE_TABLE(platform, musb_dsps_id_table); -#ifdef CONFIG_OF static const struct of_device_id musb_dsps_of_match[] = { { .compatible = "ti,musb-am33xx", - .data = (void *) &ti81xx_driver_data, }, + .data = (void *) &am33xx_driver_data, }, { }, }; MODULE_DEVICE_TABLE(of, musb_dsps_of_match); + +#ifdef CONFIG_PM_SLEEP +static int dsps_suspend(struct device *dev) +{ + struct dsps_glue *glue = dev_get_drvdata(dev); + const struct dsps_musb_wrapper *wrp = glue->wrp; + struct musb *musb = platform_get_drvdata(glue->musb); + void __iomem *mbase = musb->ctrl_base; + + glue->context.control = dsps_readl(mbase, wrp->control); + glue->context.epintr = dsps_readl(mbase, wrp->epintr_set); + glue->context.coreintr = dsps_readl(mbase, wrp->coreintr_set); + glue->context.phy_utmi = dsps_readl(mbase, wrp->phy_utmi); + glue->context.mode = dsps_readl(mbase, wrp->mode); + glue->context.tx_mode = dsps_readl(mbase, wrp->tx_mode); + glue->context.rx_mode = dsps_readl(mbase, wrp->rx_mode); + + return 0; +} + +static int dsps_resume(struct device *dev) +{ + struct dsps_glue *glue = dev_get_drvdata(dev); + const struct dsps_musb_wrapper *wrp = glue->wrp; + struct musb *musb = platform_get_drvdata(glue->musb); + void __iomem *mbase = musb->ctrl_base; + + dsps_writel(mbase, wrp->control, glue->context.control); + dsps_writel(mbase, wrp->epintr_set, glue->context.epintr); + dsps_writel(mbase, wrp->coreintr_set, glue->context.coreintr); + dsps_writel(mbase, wrp->phy_utmi, glue->context.phy_utmi); + dsps_writel(mbase, wrp->mode, glue->context.mode); + dsps_writel(mbase, wrp->tx_mode, glue->context.tx_mode); + dsps_writel(mbase, wrp->rx_mode, glue->context.rx_mode); + + return 0; +} #endif +static SIMPLE_DEV_PM_OPS(dsps_pm_ops, dsps_suspend, dsps_resume); + static struct platform_driver dsps_usbss_driver = { .probe = dsps_probe, .remove = dsps_remove, .driver = { .name = "musb-dsps", .pm = &dsps_pm_ops, - .of_match_table = of_match_ptr(musb_dsps_of_match), + .of_match_table = musb_dsps_of_match, }, - .id_table = musb_dsps_id_table, }; MODULE_DESCRIPTION("TI DSPS MUSB Glue Layer"); @@ -785,14 +827,4 @@ MODULE_AUTHOR("Ravi B <ravibabu@ti.com>"); MODULE_AUTHOR("Ajay Kumar Gupta <ajay.gupta@ti.com>"); MODULE_LICENSE("GPL v2"); -static int __init dsps_init(void) -{ - return platform_driver_register(&dsps_usbss_driver); -} -subsys_initcall(dsps_init); - -static void __exit dsps_exit(void) -{ - platform_driver_unregister(&dsps_usbss_driver); -} -module_exit(dsps_exit); +module_platform_driver(dsps_usbss_driver); diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index 876787438c2..d4aa779339f 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -46,48 +46,6 @@ #include "musb_core.h" -/* MUSB PERIPHERAL status 3-mar-2006: - * - * - EP0 seems solid. It passes both USBCV and usbtest control cases. - * Minor glitches: - * - * + remote wakeup to Linux hosts work, but saw USBCV failures; - * in one test run (operator error?) - * + endpoint halt tests -- in both usbtest and usbcv -- seem - * to break when dma is enabled ... is something wrongly - * clearing SENDSTALL? - * - * - Mass storage behaved ok when last tested. Network traffic patterns - * (with lots of short transfers etc) need retesting; they turn up the - * worst cases of the DMA, since short packets are typical but are not - * required. - * - * - TX/IN - * + both pio and dma behave in with network and g_zero tests - * + no cppi throughput issues other than no-hw-queueing - * + failed with FLAT_REG (DaVinci) - * + seems to behave with double buffering, PIO -and- CPPI - * + with gadgetfs + AIO, requests got lost? - * - * - RX/OUT - * + both pio and dma behave in with network and g_zero tests - * + dma is slow in typical case (short_not_ok is clear) - * + double buffering ok with PIO - * + double buffering *FAILS* with CPPI, wrong data bytes sometimes - * + request lossage observed with gadgetfs - * - * - ISO not tested ... might work, but only weakly isochronous - * - * - Gadget driver disabling of softconnect during bind() is ignored; so - * drivers can't hold off host requests until userspace is ready. - * (Workaround: they can turn it off later.) - * - * - PORTABILITY (assumes PIO works): - * + DaVinci, basically works with cppi dma - * + OMAP 2430, ditto with mentor dma - * + TUSB 6010, platform-specific dma in the works - */ - /* ----------------------------------------------------------------------- */ #define is_buffer_mapped(req) (is_dma_capable() && \ @@ -118,13 +76,21 @@ static inline void map_dma_buffer(struct musb_request *request, return; if (request->request.dma == DMA_ADDR_INVALID) { - request->request.dma = dma_map_single( + dma_addr_t dma_addr; + int ret; + + dma_addr = dma_map_single( musb->controller, request->request.buf, request->request.length, request->tx ? DMA_TO_DEVICE : DMA_FROM_DEVICE); + ret = dma_mapping_error(musb->controller, dma_addr); + if (ret) + return; + + request->request.dma = dma_addr; request->map_state = MUSB_MAPPED; } else { dma_sync_single_for_device(musb->controller, @@ -141,7 +107,9 @@ static inline void map_dma_buffer(struct musb_request *request, static inline void unmap_dma_buffer(struct musb_request *request, struct musb *musb) { - if (!is_buffer_mapped(request)) + struct musb_ep *musb_ep = request->ep; + + if (!is_buffer_mapped(request) || !musb_ep->dma) return; if (request->request.dma == DMA_ADDR_INVALID) { @@ -195,7 +163,10 @@ __acquires(ep->musb->lock) ep->busy = 1; spin_unlock(&musb->lock); - unmap_dma_buffer(req, musb); + + if (!dma_mapping_error(&musb->g.dev, request->dma)) + unmap_dma_buffer(req, musb); + if (request->status == 0) dev_dbg(musb->controller, "%s done request %p, %d/%d\n", ep->end_point.name, request, @@ -275,41 +246,6 @@ static inline int max_ep_writesize(struct musb *musb, struct musb_ep *ep) return ep->packet_sz; } - -#ifdef CONFIG_USB_INVENTRA_DMA - -/* Peripheral tx (IN) using Mentor DMA works as follows: - Only mode 0 is used for transfers <= wPktSize, - mode 1 is used for larger transfers, - - One of the following happens: - - Host sends IN token which causes an endpoint interrupt - -> TxAvail - -> if DMA is currently busy, exit. - -> if queue is non-empty, txstate(). - - - Request is queued by the gadget driver. - -> if queue was previously empty, txstate() - - txstate() - -> start - /\ -> setup DMA - | (data is transferred to the FIFO, then sent out when - | IN token(s) are recd from Host. - | -> DMA interrupt on completion - | calls TxAvail. - | -> stop DMA, ~DMAENAB, - | -> set TxPktRdy for last short pkt or zlp - | -> Complete Request - | -> Continue next request (call txstate) - |___________________________________| - - * Non-Mentor DMA engines can of course work differently, such as by - * upleveling from irq-per-packet to irq-per-buffer. - */ - -#endif - /* * An endpoint is transmitting data. This can be called either from * the IRQ routine or from ep.queue() to kickstart a request on an @@ -408,7 +344,19 @@ static void txstate(struct musb *musb, struct musb_request *req) csr |= (MUSB_TXCSR_DMAENAB | MUSB_TXCSR_DMAMODE | MUSB_TXCSR_MODE); - if (!musb_ep->hb_mult) + /* + * Enable Autoset according to table + * below + * bulk_split hb_mult Autoset_Enable + * 0 0 Yes(Normal) + * 0 >0 No(High BW ISO) + * 1 0 Yes(HS bulk) + * 1 >0 Yes(FS bulk) + */ + if (!musb_ep->hb_mult || + (musb_ep->hb_mult && + can_bulk_split(musb, + musb_ep->type))) csr |= MUSB_TXCSR_AUTOSET; } csr &= ~MUSB_TXCSR_P_UNDERRUN; @@ -417,47 +365,49 @@ static void txstate(struct musb *musb, struct musb_request *req) } } -#elif defined(CONFIG_USB_TI_CPPI_DMA) - /* program endpoint CSR first, then setup DMA */ - csr &= ~(MUSB_TXCSR_P_UNDERRUN | MUSB_TXCSR_TXPKTRDY); - csr |= MUSB_TXCSR_DMAENAB | MUSB_TXCSR_DMAMODE | - MUSB_TXCSR_MODE; - musb_writew(epio, MUSB_TXCSR, - (MUSB_TXCSR_P_WZC_BITS & ~MUSB_TXCSR_P_UNDERRUN) - | csr); - - /* ensure writebuffer is empty */ - csr = musb_readw(epio, MUSB_TXCSR); - - /* NOTE host side sets DMAENAB later than this; both are - * OK since the transfer dma glue (between CPPI and Mentor - * fifos) just tells CPPI it could start. Data only moves - * to the USB TX fifo when both fifos are ready. - */ - - /* "mode" is irrelevant here; handle terminating ZLPs like - * PIO does, since the hardware RNDIS mode seems unreliable - * except for the last-packet-is-already-short case. - */ - use_dma = use_dma && c->channel_program( - musb_ep->dma, musb_ep->packet_sz, - 0, - request->dma + request->actual, - request_size); - if (!use_dma) { - c->channel_release(musb_ep->dma); - musb_ep->dma = NULL; - csr &= ~MUSB_TXCSR_DMAENAB; - musb_writew(epio, MUSB_TXCSR, csr); - /* invariant: prequest->buf is non-null */ - } -#elif defined(CONFIG_USB_TUSB_OMAP_DMA) - use_dma = use_dma && c->channel_program( - musb_ep->dma, musb_ep->packet_sz, - request->zero, - request->dma + request->actual, - request_size); #endif + if (is_cppi_enabled()) { + /* program endpoint CSR first, then setup DMA */ + csr &= ~(MUSB_TXCSR_P_UNDERRUN | MUSB_TXCSR_TXPKTRDY); + csr |= MUSB_TXCSR_DMAENAB | MUSB_TXCSR_DMAMODE | + MUSB_TXCSR_MODE; + musb_writew(epio, MUSB_TXCSR, (MUSB_TXCSR_P_WZC_BITS & + ~MUSB_TXCSR_P_UNDERRUN) | csr); + + /* ensure writebuffer is empty */ + csr = musb_readw(epio, MUSB_TXCSR); + + /* + * NOTE host side sets DMAENAB later than this; both are + * OK since the transfer dma glue (between CPPI and + * Mentor fifos) just tells CPPI it could start. Data + * only moves to the USB TX fifo when both fifos are + * ready. + */ + /* + * "mode" is irrelevant here; handle terminating ZLPs + * like PIO does, since the hardware RNDIS mode seems + * unreliable except for the + * last-packet-is-already-short case. + */ + use_dma = use_dma && c->channel_program( + musb_ep->dma, musb_ep->packet_sz, + 0, + request->dma + request->actual, + request_size); + if (!use_dma) { + c->channel_release(musb_ep->dma); + musb_ep->dma = NULL; + csr &= ~MUSB_TXCSR_DMAENAB; + musb_writew(epio, MUSB_TXCSR, csr); + /* invariant: prequest->buf is non-null */ + } + } else if (tusb_dma_omap()) + use_dma = use_dma && c->channel_program( + musb_ep->dma, musb_ep->packet_sz, + request->zero, + request->dma + request->actual, + request_size); } #endif @@ -604,37 +554,6 @@ void musb_g_tx(struct musb *musb, u8 epnum) /* ------------------------------------------------------------ */ -#ifdef CONFIG_USB_INVENTRA_DMA - -/* Peripheral rx (OUT) using Mentor DMA works as follows: - - Only mode 0 is used. - - - Request is queued by the gadget class driver. - -> if queue was previously empty, rxstate() - - - Host sends OUT token which causes an endpoint interrupt - /\ -> RxReady - | -> if request queued, call rxstate - | /\ -> setup DMA - | | -> DMA interrupt on completion - | | -> RxReady - | | -> stop DMA - | | -> ack the read - | | -> if data recd = max expected - | | by the request, or host - | | sent a short packet, - | | complete the request, - | | and start the next one. - | |_____________________________________| - | else just wait for the host - | to send the next OUT token. - |__________________________________________________| - - * Non-Mentor DMA engines can of course work differently. - */ - -#endif - /* * Context: controller locked, IRQs blocked, endpoint selected */ @@ -723,7 +642,7 @@ static void rxstate(struct musb *musb, struct musb_request *req) struct dma_controller *c; struct dma_channel *channel; int use_dma = 0; - int transfer_size; + unsigned int transfer_size; c = musb->dma_controller; channel = musb_ep->dma; @@ -765,10 +684,11 @@ static void rxstate(struct musb *musb, struct musb_request *req) csr | MUSB_RXCSR_DMAMODE); musb_writew(epio, MUSB_RXCSR, csr); - transfer_size = min(request->length - request->actual, + transfer_size = min_t(unsigned int, + request->length - + request->actual, channel->max_len); musb_ep->dma->desired_mode = 1; - } else { if (!musb_ep->hb_mult && musb_ep->hw_ep->rx_double_buffered) @@ -798,7 +718,7 @@ static void rxstate(struct musb *musb, struct musb_request *req) struct dma_controller *c; struct dma_channel *channel; - int transfer_size = 0; + unsigned int transfer_size = 0; c = musb->dma_controller; channel = musb_ep->dma; @@ -807,11 +727,13 @@ static void rxstate(struct musb *musb, struct musb_request *req) if (fifo_count < musb_ep->packet_sz) transfer_size = fifo_count; else if (request->short_not_ok) - transfer_size = min(request->length - + transfer_size = min_t(unsigned int, + request->length - request->actual, channel->max_len); else - transfer_size = min(request->length - + transfer_size = min_t(unsigned int, + request->length - request->actual, (unsigned)fifo_count); @@ -1110,11 +1032,15 @@ static int musb_gadget_enable(struct usb_ep *ep, /* Set TXMAXP with the FIFO size of the endpoint * to disable double buffering mode. */ - if (musb->double_buffer_not_ok) + if (musb->double_buffer_not_ok) { musb_writew(regs, MUSB_TXMAXP, hw_ep->max_packet_sz_tx); - else + } else { + if (can_bulk_split(musb, musb_ep->type)) + musb_ep->hb_mult = (hw_ep->max_packet_sz_tx / + musb_ep->packet_sz) - 1; musb_writew(regs, MUSB_TXMAXP, musb_ep->packet_sz | (musb_ep->hb_mult << 11)); + } csr = MUSB_TXCSR_MODE | MUSB_TXCSR_CLRDATATOG; if (musb_readw(regs, MUSB_TXCSR) @@ -1195,7 +1121,7 @@ static int musb_gadget_enable(struct usb_ep *ep, case USB_ENDPOINT_XFER_BULK: s = "bulk"; break; case USB_ENDPOINT_XFER_INT: s = "int"; break; default: s = "iso"; break; - }; s; }), + } s; }), musb_ep->is_in ? "IN" : "OUT", musb_ep->dma ? "dma, " : "", musb_ep->packet_sz); @@ -1350,7 +1276,8 @@ static int musb_gadget_queue(struct usb_ep *ep, struct usb_request *req, dev_dbg(musb->controller, "req %p queued to %s while ep %s\n", req, ep->name, "disabled"); status = -ESHUTDOWN; - goto cleanup; + unmap_dma_buffer(request, musb); + goto unlock; } /* add request to the list */ @@ -1360,7 +1287,7 @@ static int musb_gadget_queue(struct usb_ep *ep, struct usb_request *req, if (!musb_ep->busy && &request->list == musb_ep->req_list.next) musb_ep_restart(musb, request); -cleanup: +unlock: spin_unlock_irqrestore(&musb->lock, lockflags); return status; } @@ -1660,7 +1587,7 @@ static int musb_gadget_wakeup(struct usb_gadget *gadget) goto done; default: dev_dbg(musb->controller, "Unhandled wake: %s\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); goto done; } @@ -1780,13 +1707,6 @@ static const struct usb_gadget_ops musb_gadget_operations = { * all peripheral ports are external... */ -static void musb_gadget_release(struct device *dev) -{ - /* kref_put(WHAT) */ - dev_dbg(dev, "%s\n", __func__); -} - - static void init_peripheral_ep(struct musb *musb, struct musb_ep *ep, u8 epnum, int is_in) { @@ -1807,14 +1727,14 @@ init_peripheral_ep(struct musb *musb, struct musb_ep *ep, u8 epnum, int is_in) ep->end_point.name = ep->name; INIT_LIST_HEAD(&ep->end_point.ep_list); if (!epnum) { - ep->end_point.maxpacket = 64; + usb_ep_set_maxpacket_limit(&ep->end_point, 64); ep->end_point.ops = &musb_g_ep0_ops; musb->g.ep0 = &ep->end_point; } else { if (is_in) - ep->end_point.maxpacket = hw_ep->max_packet_sz_tx; + usb_ep_set_maxpacket_limit(&ep->end_point, hw_ep->max_packet_sz_tx); else - ep->end_point.maxpacket = hw_ep->max_packet_sz_rx; + usb_ep_set_maxpacket_limit(&ep->end_point, hw_ep->max_packet_sz_rx); ep->end_point.ops = &musb_ep_ops; list_add_tail(&ep->end_point.ep_list, &musb->g.ep_list); } @@ -1870,25 +1790,23 @@ int musb_gadget_setup(struct musb *musb) musb->g.max_speed = USB_SPEED_HIGH; musb->g.speed = USB_SPEED_UNKNOWN; + MUSB_DEV_MODE(musb); + musb->xceiv->otg->default_a = 0; + musb->xceiv->state = OTG_STATE_B_IDLE; + /* this "gadget" abstracts/virtualizes the controller */ - dev_set_name(&musb->g.dev, "gadget"); - musb->g.dev.parent = musb->controller; - musb->g.dev.dma_mask = musb->controller->dma_mask; - musb->g.dev.release = musb_gadget_release; musb->g.name = musb_driver_name; - +#if IS_ENABLED(CONFIG_USB_MUSB_DUAL_ROLE) musb->g.is_otg = 1; +#elif IS_ENABLED(CONFIG_USB_MUSB_GADGET) + musb->g.is_otg = 0; +#endif musb_g_init_endpoints(musb); musb->is_active = 0; musb_platform_try_idle(musb, 0); - status = device_register(&musb->g.dev); - if (status != 0) { - put_device(&musb->g.dev); - return status; - } status = usb_add_gadget_udc(musb->controller, &musb->g); if (status) goto err; @@ -1902,9 +1820,9 @@ err: void musb_gadget_cleanup(struct musb *musb) { + if (musb->port_mode == MUSB_PORT_MODE_HOST) + return; usb_del_gadget_udc(&musb->g); - if (musb->g.dev.parent) - device_unregister(&musb->g.dev); } /* @@ -1923,7 +1841,6 @@ static int musb_gadget_start(struct usb_gadget *g, { struct musb *musb = gadget_to_musb(g); struct usb_otg *otg = musb->xceiv->otg; - struct usb_hcd *hcd = musb_to_hcd(musb); unsigned long flags; int retval = 0; @@ -1946,21 +1863,14 @@ static int musb_gadget_start(struct usb_gadget *g, musb->xceiv->state = OTG_STATE_B_IDLE; spin_unlock_irqrestore(&musb->lock, flags); + musb_start(musb); + /* REVISIT: funcall to other code, which also * handles power budgeting ... this way also * ensures HdrcStart is indirectly called. */ - retval = usb_add_hcd(hcd, 0, 0); - if (retval < 0) { - dev_dbg(musb->controller, "add_hcd failed, %d\n", retval); - goto err; - } - - if ((musb->xceiv->last_event == USB_EVENT_ID) - && otg->set_vbus) - otg_set_vbus(otg, 1); - - hcd->self.uses_pio_for_control = 1; + if (musb->xceiv->last_event == USB_EVENT_ID) + musb_platform_set_vbus(musb, 1); if (musb->xceiv->last_event == USB_EVENT_NONE) pm_runtime_put(musb->controller); @@ -2039,13 +1949,14 @@ static int musb_gadget_stop(struct usb_gadget *g, stop_activity(musb, driver); otg_set_peripheral(musb->xceiv->otg, NULL); - dev_dbg(musb->controller, "unregistering driver %s\n", driver->function); + dev_dbg(musb->controller, "unregistering driver %s\n", + driver ? driver->function : "(removed)"); musb->is_active = 0; + musb->gadget_driver = NULL; musb_platform_try_idle(musb, 0); spin_unlock_irqrestore(&musb->lock, flags); - usb_remove_hcd(musb_to_hcd(musb)); /* * FIXME we need to be able to register another * gadget driver here and have everything work; @@ -2078,7 +1989,7 @@ void musb_g_resume(struct musb *musb) break; default: WARNING("unhandled RESUME transition (%s)\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); } } @@ -2108,7 +2019,7 @@ void musb_g_suspend(struct musb *musb) * A_PERIPHERAL may need care too */ WARNING("unhandled SUSPEND transition (%s)\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); } } @@ -2142,7 +2053,7 @@ void musb_g_disconnect(struct musb *musb) switch (musb->xceiv->state) { default: dev_dbg(musb->controller, "Unhandled disconnect %s, setting a_idle\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); musb->xceiv->state = OTG_STATE_A_IDLE; MUSB_HST_MODE(musb); break; @@ -2208,7 +2119,15 @@ __acquires(musb->lock) /* Normal reset, as B-Device; * or else after HNP, as A-Device */ - if (devctl & MUSB_DEVCTL_BDEVICE) { + if (!musb->g.is_otg) { + /* USB device controllers that are not OTG compatible + * may not have DEVCTL register in silicon. + * In that case, do not rely on devctl for setting + * peripheral mode. + */ + musb->xceiv->state = OTG_STATE_B_PERIPHERAL; + musb->g.is_a_peripheral = 0; + } else if (devctl & MUSB_DEVCTL_BDEVICE) { musb->xceiv->state = OTG_STATE_B_PERIPHERAL; musb->g.is_a_peripheral = 0; } else { diff --git a/drivers/usb/musb/musb_gadget.h b/drivers/usb/musb/musb_gadget.h index 66b7c5e0fb4..0314dfc770c 100644 --- a/drivers/usb/musb/musb_gadget.h +++ b/drivers/usb/musb/musb_gadget.h @@ -37,6 +37,38 @@ #include <linux/list.h> +#if IS_ENABLED(CONFIG_USB_MUSB_GADGET) || IS_ENABLED(CONFIG_USB_MUSB_DUAL_ROLE) +extern irqreturn_t musb_g_ep0_irq(struct musb *); +extern void musb_g_tx(struct musb *, u8); +extern void musb_g_rx(struct musb *, u8); +extern void musb_g_reset(struct musb *); +extern void musb_g_suspend(struct musb *); +extern void musb_g_resume(struct musb *); +extern void musb_g_wakeup(struct musb *); +extern void musb_g_disconnect(struct musb *); +extern void musb_gadget_cleanup(struct musb *); +extern int musb_gadget_setup(struct musb *); + +#else +static inline irqreturn_t musb_g_ep0_irq(struct musb *musb) +{ + return 0; +} + +static inline void musb_g_tx(struct musb *musb, u8 epnum) {} +static inline void musb_g_rx(struct musb *musb, u8 epnum) {} +static inline void musb_g_reset(struct musb *musb) {} +static inline void musb_g_suspend(struct musb *musb) {} +static inline void musb_g_resume(struct musb *musb) {} +static inline void musb_g_wakeup(struct musb *musb) {} +static inline void musb_g_disconnect(struct musb *musb) {} +static inline void musb_gadget_cleanup(struct musb *musb) {} +static inline int musb_gadget_setup(struct musb *musb) +{ + return 0; +} +#endif + enum buffer_map_state { UN_MAPPED = 0, PRE_MAPPED, @@ -106,14 +138,8 @@ static inline struct musb_request *next_request(struct musb_ep *ep) return container_of(queue->next, struct musb_request, list); } -extern void musb_g_tx(struct musb *musb, u8 epnum); -extern void musb_g_rx(struct musb *musb, u8 epnum); - extern const struct usb_ep_ops musb_g_ep0_ops; -extern int musb_gadget_setup(struct musb *); -extern void musb_gadget_cleanup(struct musb *); - extern void musb_g_giveback(struct musb_ep *, struct usb_request *, int); extern void musb_ep_restart(struct musb *, struct musb_request *); diff --git a/drivers/usb/musb/musb_gadget_ep0.c b/drivers/usb/musb/musb_gadget_ep0.c index c9c1ac4e075..2af45a0c893 100644 --- a/drivers/usb/musb/musb_gadget_ep0.c +++ b/drivers/usb/musb/musb_gadget_ep0.c @@ -505,8 +505,10 @@ static void ep0_rxstate(struct musb *musb) req->status = -EOVERFLOW; count = len; } - musb_read_fifo(&musb->endpoints[0], count, buf); - req->actual += count; + if (count > 0) { + musb_read_fifo(&musb->endpoints[0], count, buf); + req->actual += count; + } csr = MUSB_CSR0_P_SVDRXPKTRDY; if (count < 64 || req->actual == req->length) { musb->ep0_state = MUSB_EP0_STAGE_STATUSIN; diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index e9f0fd9ddd2..eb06291a40c 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -39,14 +39,12 @@ #include <linux/sched.h> #include <linux/slab.h> #include <linux/errno.h> -#include <linux/init.h> #include <linux/list.h> #include <linux/dma-mapping.h> #include "musb_core.h" #include "musb_host.h" - /* MUSB HOST status 22-mar-2006 * * - There's still lots of partial code duplication for fault paths, so @@ -96,6 +94,11 @@ * of transfers between endpoints, or anything clever. */ +struct musb *hcd_to_musb(struct usb_hcd *hcd) +{ + return *(struct musb **) hcd->hcd_priv; +} + static void musb_ep_program(struct musb *musb, u8 epnum, struct urb *urb, int is_out, @@ -249,7 +252,7 @@ musb_start_urb(struct musb *musb, int is_in, struct musb_qh *qh) case USB_ENDPOINT_XFER_BULK: s = "-bulk"; break; case USB_ENDPOINT_XFER_ISOC: s = "-iso"; break; default: s = "-intr"; break; - }; s; }), + } s; }), epnum, buf + offset, len); /* Configure endpoint */ @@ -269,8 +272,7 @@ musb_start_urb(struct musb *musb, int is_in, struct musb_qh *qh) /* FIXME this doesn't implement that scheduling policy ... * or handle framecounter wrapping */ - if ((urb->transfer_flags & URB_ISO_ASAP) - || (frame >= urb->start_frame)) { + if (1) { /* Always assume URB_ISO_ASAP */ /* REVISIT the SOF irq handler shouldn't duplicate * this code; and we don't init urb->start_frame... */ @@ -311,9 +313,9 @@ __acquires(musb->lock) urb->actual_length, urb->transfer_buffer_length ); - usb_hcd_unlink_urb_from_ep(musb_to_hcd(musb), urb); + usb_hcd_unlink_urb_from_ep(musb->hcd, urb); spin_unlock(&musb->lock); - usb_hcd_giveback_urb(musb_to_hcd(musb), urb, status); + usb_hcd_giveback_urb(musb->hcd, urb, status); spin_lock(&musb->lock); } @@ -625,7 +627,7 @@ static bool musb_tx_dma_program(struct dma_controller *dma, u16 csr; u8 mode; -#ifdef CONFIG_USB_INVENTRA_DMA +#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA) if (length > channel->max_len) length = channel->max_len; @@ -634,7 +636,17 @@ static bool musb_tx_dma_program(struct dma_controller *dma, mode = 1; csr |= MUSB_TXCSR_DMAMODE | MUSB_TXCSR_DMAENAB; /* autoset shouldn't be set in high bandwidth */ - if (qh->hb_mult == 1) + /* + * Enable Autoset according to table + * below + * bulk_split hb_mult Autoset_Enable + * 0 1 Yes(Normal) + * 0 >1 No(High BW ISO) + * 1 1 Yes(HS bulk) + * 1 >1 Yes(FS bulk) + */ + if (qh->hb_mult == 1 || (qh->hb_mult > 1 && + can_bulk_split(hw_ep->musb, qh->type))) csr |= MUSB_TXCSR_AUTOSET; } else { mode = 0; @@ -746,7 +758,13 @@ static void musb_ep_program(struct musb *musb, u8 epnum, /* general endpoint setup */ if (epnum) { /* flush all old state, set default */ - musb_h_tx_flush_fifo(hw_ep); + /* + * We could be flushing valid + * packets in double buffering + * case + */ + if (!hw_ep->tx_double_buffered) + musb_h_tx_flush_fifo(hw_ep); /* * We must not clear the DMAMODE bit before or in @@ -763,11 +781,13 @@ static void musb_ep_program(struct musb *musb, u8 epnum, ); csr |= MUSB_TXCSR_MODE; - if (usb_gettoggle(urb->dev, qh->epnum, 1)) - csr |= MUSB_TXCSR_H_WR_DATATOGGLE - | MUSB_TXCSR_H_DATATOGGLE; - else - csr |= MUSB_TXCSR_CLRDATATOG; + if (!hw_ep->tx_double_buffered) { + if (usb_gettoggle(urb->dev, qh->epnum, 1)) + csr |= MUSB_TXCSR_H_WR_DATATOGGLE + | MUSB_TXCSR_H_DATATOGGLE; + else + csr |= MUSB_TXCSR_CLRDATATOG; + } musb_writew(epio, MUSB_TXCSR, csr); /* REVISIT may need to clear FLUSHFIFO ... */ @@ -791,17 +811,19 @@ static void musb_ep_program(struct musb *musb, u8 epnum, /* protocol/endpoint/interval/NAKlimit */ if (epnum) { musb_writeb(epio, MUSB_TXTYPE, qh->type_reg); - if (musb->double_buffer_not_ok) + if (musb->double_buffer_not_ok) { musb_writew(epio, MUSB_TXMAXP, hw_ep->max_packet_sz_tx); - else if (can_bulk_split(musb, qh->type)) + } else if (can_bulk_split(musb, qh->type)) { + qh->hb_mult = hw_ep->max_packet_sz_tx + / packet_sz; musb_writew(epio, MUSB_TXMAXP, packet_sz - | ((hw_ep->max_packet_sz_tx / - packet_sz) - 1) << 11); - else + | ((qh->hb_mult) - 1) << 11); + } else { musb_writew(epio, MUSB_TXMAXP, qh->maxpacket | ((qh->hb_mult - 1) << 11)); + } musb_writeb(epio, MUSB_TXINTERVAL, qh->intv_reg); } else { musb_writeb(epio, MUSB_NAKLIMIT0, qh->intv_reg); @@ -1161,6 +1183,9 @@ irqreturn_t musb_h_ep0_irq(struct musb *musb) csr = MUSB_CSR0_H_STATUSPKT | MUSB_CSR0_TXPKTRDY; + /* disable ping token in status phase */ + csr |= MUSB_CSR0_H_DIS_PING; + /* flag status stage */ musb->ep0_stage = MUSB_EP0_STATUS; @@ -1212,7 +1237,6 @@ void musb_host_tx(struct musb *musb, u8 epnum) void __iomem *mbase = musb->mregs; struct dma_channel *dma; bool transfer_pending = false; - static bool use_sg; musb_ep_select(mbase, epnum); tx_csr = musb_readw(epio, MUSB_TXCSR); @@ -1436,16 +1460,16 @@ done: if (length > qh->maxpacket) length = qh->maxpacket; /* Unmap the buffer so that CPU can use it */ - usb_hcd_unmap_urb_for_dma(musb_to_hcd(musb), urb); + usb_hcd_unmap_urb_for_dma(musb->hcd, urb); /* * We need to map sg if the transfer_buffer is * NULL. */ if (!urb->transfer_buffer) - use_sg = true; + qh->use_sg = true; - if (use_sg) { + if (qh->use_sg) { /* sg_miter_start is already done in musb_ep_program */ if (!sg_miter_next(&qh->sg_miter)) { dev_err(musb->controller, "error: sg list empty\n"); @@ -1464,9 +1488,9 @@ done: qh->segsize = length; - if (use_sg) { + if (qh->use_sg) { if (offset + length >= urb->transfer_buffer_length) - use_sg = false; + qh->use_sg = false; } musb_ep_select(mbase, epnum); @@ -1532,7 +1556,6 @@ void musb_host_rx(struct musb *musb, u8 epnum) bool done = false; u32 status; struct dma_channel *dma; - static bool use_sg; unsigned int sg_flags = SG_MITER_ATOMIC | SG_MITER_TO_SG; musb_ep_select(mbase, epnum); @@ -1639,7 +1662,7 @@ void musb_host_rx(struct musb *musb, u8 epnum) /* FIXME this is _way_ too much in-line logic for Mentor DMA */ -#ifndef CONFIG_USB_INVENTRA_DMA +#if !defined(CONFIG_USB_INVENTRA_DMA) && !defined(CONFIG_USB_UX500_DMA) if (rx_csr & MUSB_RXCSR_H_REQPKT) { /* REVISIT this happened for a while on some short reads... * the cleanup still needs investigation... looks bad... @@ -1671,7 +1694,8 @@ void musb_host_rx(struct musb *musb, u8 epnum) | MUSB_RXCSR_RXPKTRDY); musb_writew(hw_ep->regs, MUSB_RXCSR, val); -#ifdef CONFIG_USB_INVENTRA_DMA +#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA) || \ + defined(CONFIG_USB_TI_CPPI41_DMA) if (usb_pipeisoc(pipe)) { struct usb_iso_packet_descriptor *d; @@ -1684,10 +1708,30 @@ void musb_host_rx(struct musb *musb, u8 epnum) if (d->status != -EILSEQ && d->status != -EOVERFLOW) d->status = 0; - if (++qh->iso_idx >= urb->number_of_packets) + if (++qh->iso_idx >= urb->number_of_packets) { done = true; - else + } else { +#if defined(CONFIG_USB_TI_CPPI41_DMA) + struct dma_controller *c; + dma_addr_t *buf; + u32 length, ret; + + c = musb->dma_controller; + buf = (void *) + urb->iso_frame_desc[qh->iso_idx].offset + + (u32)urb->transfer_dma; + + length = + urb->iso_frame_desc[qh->iso_idx].length; + + val |= MUSB_RXCSR_DMAENAB; + musb_writew(hw_ep->regs, MUSB_RXCSR, val); + + ret = c->channel_program(dma, qh->maxpacket, + 0, (u32) buf, length); +#endif done = false; + } } else { /* done if urb buffer is full or short packet is recd */ @@ -1727,7 +1771,8 @@ void musb_host_rx(struct musb *musb, u8 epnum) } /* we are expecting IN packets */ -#ifdef CONFIG_USB_INVENTRA_DMA +#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA) || \ + defined(CONFIG_USB_TI_CPPI41_DMA) if (dma) { struct dma_controller *c; u16 rx_count; @@ -1736,10 +1781,10 @@ void musb_host_rx(struct musb *musb, u8 epnum) rx_count = musb_readw(epio, MUSB_RXCOUNT); - dev_dbg(musb->controller, "RX%d count %d, buffer 0x%x len %d/%d\n", + dev_dbg(musb->controller, "RX%d count %d, buffer 0x%llx len %d/%d\n", epnum, rx_count, - urb->transfer_dma - + urb->actual_length, + (unsigned long long) urb->transfer_dma + + urb->actual_length, qh->offset, urb->transfer_buffer_length); @@ -1851,19 +1896,19 @@ void musb_host_rx(struct musb *musb, u8 epnum) unsigned int received_len; /* Unmap the buffer so that CPU can use it */ - usb_hcd_unmap_urb_for_dma(musb_to_hcd(musb), urb); + usb_hcd_unmap_urb_for_dma(musb->hcd, urb); /* * We need to map sg if the transfer_buffer is * NULL. */ if (!urb->transfer_buffer) { - use_sg = true; + qh->use_sg = true; sg_miter_start(&qh->sg_miter, urb->sg, 1, sg_flags); } - if (use_sg) { + if (qh->use_sg) { if (!sg_miter_next(&qh->sg_miter)) { dev_err(musb->controller, "error: sg list empty\n"); sg_miter_stop(&qh->sg_miter); @@ -1893,8 +1938,8 @@ finish: urb->actual_length += xfer_len; qh->offset += xfer_len; if (done) { - if (use_sg) - use_sg = false; + if (qh->use_sg) + qh->use_sg = false; if (urb->status == -EINPROGRESS) urb->status = status; @@ -1992,7 +2037,7 @@ static int musb_schedule( head = &musb->out_bulk; /* Enable bulk RX/TX NAK timeout scheme when bulk requests are - * multiplexed. This scheme doen't work in high speed to full + * multiplexed. This scheme does not work in high speed to full * speed scenario as NAK interrupts are not coming from a * full speed device connected to a high speed device. * NAK timeout interval is 8 (128 uframe or 16ms) for HS and @@ -2412,6 +2457,8 @@ static int musb_bus_suspend(struct usb_hcd *hcd) struct musb *musb = hcd_to_musb(hcd); u8 devctl; + musb_port_suspend(musb, true); + if (!is_host_active(musb)) return 0; @@ -2433,7 +2480,7 @@ static int musb_bus_suspend(struct usb_hcd *hcd) if (musb->is_active) { WARNING("trying to suspend as %s while active\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); return -EBUSY; } else return 0; @@ -2441,14 +2488,130 @@ static int musb_bus_suspend(struct usb_hcd *hcd) static int musb_bus_resume(struct usb_hcd *hcd) { - /* resuming child port does the work */ + struct musb *musb = hcd_to_musb(hcd); + + if (musb->config && + musb->config->host_port_deassert_reset_at_resume) + musb_port_reset(musb, false); + + return 0; +} + +#ifndef CONFIG_MUSB_PIO_ONLY + +#define MUSB_USB_DMA_ALIGN 4 + +struct musb_temp_buffer { + void *kmalloc_ptr; + void *old_xfer_buffer; + u8 data[0]; +}; + +static void musb_free_temp_buffer(struct urb *urb) +{ + enum dma_data_direction dir; + struct musb_temp_buffer *temp; + + if (!(urb->transfer_flags & URB_ALIGNED_TEMP_BUFFER)) + return; + + dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; + + temp = container_of(urb->transfer_buffer, struct musb_temp_buffer, + data); + + if (dir == DMA_FROM_DEVICE) { + memcpy(temp->old_xfer_buffer, temp->data, + urb->transfer_buffer_length); + } + urb->transfer_buffer = temp->old_xfer_buffer; + kfree(temp->kmalloc_ptr); + + urb->transfer_flags &= ~URB_ALIGNED_TEMP_BUFFER; +} + +static int musb_alloc_temp_buffer(struct urb *urb, gfp_t mem_flags) +{ + enum dma_data_direction dir; + struct musb_temp_buffer *temp; + void *kmalloc_ptr; + size_t kmalloc_size; + + if (urb->num_sgs || urb->sg || + urb->transfer_buffer_length == 0 || + !((uintptr_t)urb->transfer_buffer & (MUSB_USB_DMA_ALIGN - 1))) + return 0; + + dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; + + /* Allocate a buffer with enough padding for alignment */ + kmalloc_size = urb->transfer_buffer_length + + sizeof(struct musb_temp_buffer) + MUSB_USB_DMA_ALIGN - 1; + + kmalloc_ptr = kmalloc(kmalloc_size, mem_flags); + if (!kmalloc_ptr) + return -ENOMEM; + + /* Position our struct temp_buffer such that data is aligned */ + temp = PTR_ALIGN(kmalloc_ptr, MUSB_USB_DMA_ALIGN); + + + temp->kmalloc_ptr = kmalloc_ptr; + temp->old_xfer_buffer = urb->transfer_buffer; + if (dir == DMA_TO_DEVICE) + memcpy(temp->data, urb->transfer_buffer, + urb->transfer_buffer_length); + urb->transfer_buffer = temp->data; + + urb->transfer_flags |= URB_ALIGNED_TEMP_BUFFER; + return 0; } -const struct hc_driver musb_hc_driver = { +static int musb_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, + gfp_t mem_flags) +{ + struct musb *musb = hcd_to_musb(hcd); + int ret; + + /* + * The DMA engine in RTL1.8 and above cannot handle + * DMA addresses that are not aligned to a 4 byte boundary. + * For such engine implemented (un)map_urb_for_dma hooks. + * Do not use these hooks for RTL<1.8 + */ + if (musb->hwvers < MUSB_HWVERS_1800) + return usb_hcd_map_urb_for_dma(hcd, urb, mem_flags); + + ret = musb_alloc_temp_buffer(urb, mem_flags); + if (ret) + return ret; + + ret = usb_hcd_map_urb_for_dma(hcd, urb, mem_flags); + if (ret) + musb_free_temp_buffer(urb); + + return ret; +} + +static void musb_unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) +{ + struct musb *musb = hcd_to_musb(hcd); + + usb_hcd_unmap_urb_for_dma(hcd, urb); + + /* Do not use this hook for RTL<1.8 (see description above) */ + if (musb->hwvers < MUSB_HWVERS_1800) + return; + + musb_free_temp_buffer(urb); +} +#endif /* !CONFIG_MUSB_PIO_ONLY */ + +static const struct hc_driver musb_hc_driver = { .description = "musb-hcd", .product_desc = "MUSB HDRC host driver", - .hcd_priv_size = sizeof(struct musb), + .hcd_priv_size = sizeof(struct musb *), .flags = HCD_USB2 | HCD_MEMORY, /* not using irq handler or reset hooks from usbcore, since @@ -2464,6 +2627,11 @@ const struct hc_driver musb_hc_driver = { .urb_dequeue = musb_urb_dequeue, .endpoint_disable = musb_h_disable, +#ifndef CONFIG_MUSB_PIO_ONLY + .map_urb_for_dma = musb_map_urb_for_dma, + .unmap_urb_for_dma = musb_unmap_urb_for_dma, +#endif + .hub_status_data = musb_hub_status_data, .hub_control = musb_hub_control, .bus_suspend = musb_bus_suspend, @@ -2471,3 +2639,69 @@ const struct hc_driver musb_hc_driver = { /* .start_port_reset = NULL, */ /* .hub_irq_enable = NULL, */ }; + +int musb_host_alloc(struct musb *musb) +{ + struct device *dev = musb->controller; + + /* usbcore sets dev->driver_data to hcd, and sometimes uses that... */ + musb->hcd = usb_create_hcd(&musb_hc_driver, dev, dev_name(dev)); + if (!musb->hcd) + return -EINVAL; + + *musb->hcd->hcd_priv = (unsigned long) musb; + musb->hcd->self.uses_pio_for_control = 1; + musb->hcd->uses_new_polling = 1; + musb->hcd->has_tt = 1; + + return 0; +} + +void musb_host_cleanup(struct musb *musb) +{ + if (musb->port_mode == MUSB_PORT_MODE_GADGET) + return; + usb_remove_hcd(musb->hcd); + musb->hcd = NULL; +} + +void musb_host_free(struct musb *musb) +{ + usb_put_hcd(musb->hcd); +} + +int musb_host_setup(struct musb *musb, int power_budget) +{ + int ret; + struct usb_hcd *hcd = musb->hcd; + + MUSB_HST_MODE(musb); + musb->xceiv->otg->default_a = 1; + musb->xceiv->state = OTG_STATE_A_IDLE; + + otg_set_host(musb->xceiv->otg, &hcd->self); + hcd->self.otg_port = 1; + musb->xceiv->otg->host = &hcd->self; + hcd->power_budget = 2 * (power_budget ? : 250); + + ret = usb_add_hcd(hcd, 0, 0); + if (ret < 0) + return ret; + + device_wakeup_enable(hcd->self.controller); + return 0; +} + +void musb_host_resume_root_hub(struct musb *musb) +{ + usb_hcd_resume_root_hub(musb->hcd); +} + +void musb_host_poke_root_hub(struct musb *musb) +{ + MUSB_HST_MODE(musb); + if (musb->hcd->status_urb) + usb_hcd_poll_rh_status(musb->hcd); + else + usb_hcd_resume_root_hub(musb->hcd); +} diff --git a/drivers/usb/musb/musb_host.h b/drivers/usb/musb/musb_host.h index 5a9c8feec10..7bbf01bf4bb 100644 --- a/drivers/usb/musb/musb_host.h +++ b/drivers/usb/musb/musb_host.h @@ -37,16 +37,6 @@ #include <linux/scatterlist.h> -static inline struct usb_hcd *musb_to_hcd(struct musb *musb) -{ - return container_of((void *) musb, struct usb_hcd, hcd_priv); -} - -static inline struct musb *hcd_to_musb(struct usb_hcd *hcd) -{ - return (struct musb *) (hcd->hcd_priv); -} - /* stored in "usb_host_endpoint.hcpriv" for scheduled endpoints */ struct musb_qh { struct usb_host_endpoint *hep; /* usbcore info */ @@ -74,6 +64,7 @@ struct musb_qh { u16 frame; /* for periodic schedule */ unsigned iso_idx; /* in urb->iso_frame_desc[] */ struct sg_mapping_iter sg_miter; /* for highmem in PIO mode */ + bool use_sg; /* to track urb using sglist */ }; /* map from control or bulk queue head to the first qh on that ring */ @@ -85,7 +76,58 @@ static inline struct musb_qh *first_qh(struct list_head *q) } +#if IS_ENABLED(CONFIG_USB_MUSB_HOST) || IS_ENABLED(CONFIG_USB_MUSB_DUAL_ROLE) +extern struct musb *hcd_to_musb(struct usb_hcd *); +extern irqreturn_t musb_h_ep0_irq(struct musb *); +extern int musb_host_alloc(struct musb *); +extern int musb_host_setup(struct musb *, int); +extern void musb_host_cleanup(struct musb *); +extern void musb_host_tx(struct musb *, u8); +extern void musb_host_rx(struct musb *, u8); +extern void musb_root_disconnect(struct musb *musb); +extern void musb_host_free(struct musb *); +extern void musb_host_cleanup(struct musb *); +extern void musb_host_tx(struct musb *, u8); +extern void musb_host_rx(struct musb *, u8); extern void musb_root_disconnect(struct musb *musb); +extern void musb_host_resume_root_hub(struct musb *musb); +extern void musb_host_poke_root_hub(struct musb *musb); +extern void musb_port_suspend(struct musb *musb, bool do_suspend); +extern void musb_port_reset(struct musb *musb, bool do_reset); +extern void musb_host_finish_resume(struct work_struct *work); +#else +static inline struct musb *hcd_to_musb(struct usb_hcd *hcd) +{ + return NULL; +} + +static inline irqreturn_t musb_h_ep0_irq(struct musb *musb) +{ + return 0; +} + +static inline int musb_host_alloc(struct musb *musb) +{ + return 0; +} + +static inline int musb_host_setup(struct musb *musb, int power_budget) +{ + return 0; +} + +static inline void musb_host_cleanup(struct musb *musb) {} +static inline void musb_host_free(struct musb *musb) {} +static inline void musb_host_tx(struct musb *musb, u8 epnum) {} +static inline void musb_host_rx(struct musb *musb, u8 epnum) {} +static inline void musb_root_disconnect(struct musb *musb) {} +static inline void musb_host_resume_root_hub(struct musb *musb) {} +static inline void musb_host_poll_rh_status(struct musb *musb) {} +static inline void musb_host_poke_root_hub(struct musb *musb) {} +static inline void musb_port_suspend(struct musb *musb, bool do_suspend) {} +static inline void musb_port_reset(struct musb *musb, bool do_reset) {} +static inline void musb_host_finish_resume(struct work_struct *work) {} +#endif struct usb_hcd; @@ -94,8 +136,6 @@ extern int musb_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength); -extern const struct hc_driver musb_hc_driver; - static inline struct urb *next_urb(struct musb_qh *qh) { struct list_head *queue; diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c index f70579154de..e2d2d8c9891 100644 --- a/drivers/usb/musb/musb_virthub.c +++ b/drivers/usb/musb/musb_virthub.c @@ -36,7 +36,6 @@ #include <linux/kernel.h> #include <linux/sched.h> #include <linux/errno.h> -#include <linux/init.h> #include <linux/time.h> #include <linux/timer.h> @@ -44,8 +43,38 @@ #include "musb_core.h" +void musb_host_finish_resume(struct work_struct *work) +{ + struct musb *musb; + unsigned long flags; + u8 power; + + musb = container_of(work, struct musb, finish_resume_work.work); + + spin_lock_irqsave(&musb->lock, flags); + + power = musb_readb(musb->mregs, MUSB_POWER); + power &= ~MUSB_POWER_RESUME; + dev_dbg(musb->controller, "root port resume stopped, power %02x\n", + power); + musb_writeb(musb->mregs, MUSB_POWER, power); + + /* + * ISSUE: DaVinci (RTL 1.300) disconnects after + * resume of high speed peripherals (but not full + * speed ones). + */ + musb->is_active = 1; + musb->port1_status &= ~(USB_PORT_STAT_SUSPEND | MUSB_PORT_STAT_RESUME); + musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16; + usb_hcd_poll_rh_status(musb->hcd); + /* NOTE: it might really be A_WAIT_BCON ... */ + musb->xceiv->state = OTG_STATE_A_HOST; -static void musb_port_suspend(struct musb *musb, bool do_suspend) + spin_unlock_irqrestore(&musb->lock, flags); +} + +void musb_port_suspend(struct musb *musb, bool do_suspend) { struct usb_otg *otg = musb->xceiv->otg; u8 power; @@ -95,7 +124,7 @@ static void musb_port_suspend(struct musb *musb, bool do_suspend) break; default: dev_dbg(musb->controller, "bogus rh suspend? %s\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); } } else if (power & MUSB_POWER_SUSPENDM) { power &= ~MUSB_POWER_SUSPENDM; @@ -106,11 +135,12 @@ static void musb_port_suspend(struct musb *musb, bool do_suspend) /* later, GetPortStatus will stop RESUME signaling */ musb->port1_status |= MUSB_PORT_STAT_RESUME; - musb->rh_timer = jiffies + msecs_to_jiffies(20); + schedule_delayed_work(&musb->finish_resume_work, + msecs_to_jiffies(20)); } } -static void musb_port_reset(struct musb *musb, bool do_reset) +void musb_port_reset(struct musb *musb, bool do_reset) { u8 power; void __iomem *mbase = musb->mregs; @@ -129,7 +159,6 @@ static void musb_port_reset(struct musb *musb, bool do_reset) */ power = musb_readb(mbase, MUSB_POWER); if (do_reset) { - /* * If RESUME is set, we must make sure it stays minimum 20 ms. * Then we must clear RESUME and wait a bit to let musb start @@ -138,28 +167,37 @@ static void musb_port_reset(struct musb *musb, bool do_reset) * detected". */ if (power & MUSB_POWER_RESUME) { - while (time_before(jiffies, musb->rh_timer)) - msleep(1); + long remain = (unsigned long) musb->rh_timer - jiffies; + + if (musb->rh_timer > 0 && remain > 0) { + /* take into account the minimum delay after resume */ + schedule_delayed_work( + &musb->deassert_reset_work, remain); + return; + } + musb_writeb(mbase, MUSB_POWER, - power & ~MUSB_POWER_RESUME); - msleep(1); + power & ~MUSB_POWER_RESUME); + + /* Give the core 1 ms to clear MUSB_POWER_RESUME */ + schedule_delayed_work(&musb->deassert_reset_work, + msecs_to_jiffies(1)); + return; } - musb->ignore_disconnect = true; power &= 0xf0; musb_writeb(mbase, MUSB_POWER, power | MUSB_POWER_RESET); musb->port1_status |= USB_PORT_STAT_RESET; musb->port1_status &= ~USB_PORT_STAT_ENABLE; - musb->rh_timer = jiffies + msecs_to_jiffies(50); + schedule_delayed_work(&musb->deassert_reset_work, + msecs_to_jiffies(50)); } else { dev_dbg(musb->controller, "root port reset stopped\n"); musb_writeb(mbase, MUSB_POWER, power & ~MUSB_POWER_RESET); - musb->ignore_disconnect = false; - power = musb_readb(mbase, MUSB_POWER); if (power & MUSB_POWER_HSMODE) { dev_dbg(musb->controller, "high-speed device connected\n"); @@ -170,7 +208,7 @@ static void musb_port_reset(struct musb *musb, bool do_reset) musb->port1_status |= USB_PORT_STAT_ENABLE | (USB_PORT_STAT_C_RESET << 16) | (USB_PORT_STAT_C_ENABLE << 16); - usb_hcd_poll_rh_status(musb_to_hcd(musb)); + usb_hcd_poll_rh_status(musb->hcd); musb->vbuserr_retry = VBUSERR_RETRY_COUNT; } @@ -183,7 +221,7 @@ void musb_root_disconnect(struct musb *musb) musb->port1_status = USB_PORT_STAT_POWER | (USB_PORT_STAT_C_CONNECTION << 16); - usb_hcd_poll_rh_status(musb_to_hcd(musb)); + usb_hcd_poll_rh_status(musb->hcd); musb->is_active = 0; switch (musb->xceiv->state) { @@ -203,7 +241,7 @@ void musb_root_disconnect(struct musb *musb) break; default: dev_dbg(musb->controller, "host disconnect (%s)\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); } } @@ -224,6 +262,23 @@ int musb_hub_status_data(struct usb_hcd *hcd, char *buf) return retval; } +static int musb_has_gadget(struct musb *musb) +{ + /* + * In host-only mode we start a connection right away. In OTG mode + * we have to wait until we loaded a gadget. We don't really need a + * gadget if we operate as a host but we should not start a session + * as a device without a gadget or else we explode. + */ +#ifdef CONFIG_USB_MUSB_HOST + return 1; +#else + if (musb->port_mode == MUSB_PORT_MODE_HOST) + return 1; + return musb->g.dev.driver != NULL; +#endif +} + int musb_hub_control( struct usb_hcd *hcd, u16 typeReq, @@ -312,36 +367,6 @@ int musb_hub_control( if (wIndex != 1) goto error; - /* finish RESET signaling? */ - if ((musb->port1_status & USB_PORT_STAT_RESET) - && time_after_eq(jiffies, musb->rh_timer)) - musb_port_reset(musb, false); - - /* finish RESUME signaling? */ - if ((musb->port1_status & MUSB_PORT_STAT_RESUME) - && time_after_eq(jiffies, musb->rh_timer)) { - u8 power; - - power = musb_readb(musb->mregs, MUSB_POWER); - power &= ~MUSB_POWER_RESUME; - dev_dbg(musb->controller, "root port resume stopped, power %02x\n", - power); - musb_writeb(musb->mregs, MUSB_POWER, power); - - /* ISSUE: DaVinci (RTL 1.300) disconnects after - * resume of high speed peripherals (but not full - * speed ones). - */ - - musb->is_active = 1; - musb->port1_status &= ~(USB_PORT_STAT_SUSPEND - | MUSB_PORT_STAT_RESUME); - musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16; - usb_hcd_poll_rh_status(musb_to_hcd(musb)); - /* NOTE: it might really be A_WAIT_BCON ... */ - musb->xceiv->state = OTG_STATE_A_HOST; - } - put_unaligned(cpu_to_le32(musb->port1_status & ~MUSB_PORT_STAT_RESUME), (__le32 *) buf); @@ -366,7 +391,7 @@ int musb_hub_control( * initialization logic, e.g. for OTG, or change any * logic relating to VBUS power-up. */ - if (!hcd->self.is_b_host) + if (!hcd->self.is_b_host && musb_has_gadget(musb)) musb_start(musb); break; case USB_PORT_FEAT_RESET: diff --git a/drivers/usb/musb/musbhsdma.c b/drivers/usb/musb/musbhsdma.c index 3d1fd52a15a..e8e9f9aab20 100644 --- a/drivers/usb/musb/musbhsdma.c +++ b/drivers/usb/musb/musbhsdma.c @@ -37,18 +37,10 @@ #include "musb_core.h" #include "musbhsdma.h" -static int dma_controller_start(struct dma_controller *c) -{ - /* nothing to do */ - return 0; -} - static void dma_channel_release(struct dma_channel *channel); -static int dma_controller_stop(struct dma_controller *c) +static void dma_controller_stop(struct musb_dma_controller *controller) { - struct musb_dma_controller *controller = container_of(c, - struct musb_dma_controller, controller); struct musb *musb = controller->private_data; struct dma_channel *channel; u8 bit; @@ -67,8 +59,6 @@ static int dma_controller_stop(struct dma_controller *c) } } } - - return 0; } static struct dma_channel *dma_channel_allocate(struct dma_controller *c, @@ -371,8 +361,7 @@ void dma_controller_destroy(struct dma_controller *c) struct musb_dma_controller *controller = container_of(c, struct musb_dma_controller, controller); - if (!controller) - return; + dma_controller_stop(controller); if (controller->irq) free_irq(controller->irq, c); @@ -400,8 +389,6 @@ struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *ba controller->private_data = musb; controller->base = base; - controller->controller.start = dma_controller_start; - controller->controller.stop = dma_controller_stop; controller->controller.channel_alloc = dma_channel_allocate; controller->controller.channel_release = dma_channel_release; controller->controller.channel_program = dma_channel_program; diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index da00af46079..d369bf1f393 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -37,6 +37,8 @@ #include <linux/err.h> #include <linux/delay.h> #include <linux/usb/musb-omap.h> +#include <linux/phy/omap_control_phy.h> +#include <linux/of_platform.h> #include "musb_core.h" #include "omap2430.h" @@ -46,34 +48,14 @@ struct omap2430_glue { struct platform_device *musb; enum omap_musb_vbus_id_status status; struct work_struct omap_musb_mailbox_work; - u32 __iomem *control_otghs; + struct device *control_otghs; }; #define glue_to_musb(g) platform_get_drvdata(g->musb) -struct omap2430_glue *_glue; +static struct omap2430_glue *_glue; static struct timer_list musb_idle_timer; -/** - * omap4_usb_phy_mailbox - write to usb otg mailbox - * @glue: struct omap2430_glue * - * @val: the value to be written to the mailbox - * - * On detection of a device (ID pin is grounded), this API should be called - * to set AVALID, VBUSVALID and ID pin is grounded. - * - * When OMAP is connected to a host (OMAP in device mode), this API - * is called to set AVALID, VBUSVALID and ID pin in high impedance. - * - * XXX: This function will be removed once we have a seperate driver for - * control module - */ -static void omap4_usb_phy_mailbox(struct omap2430_glue *glue, u32 val) -{ - if (glue->control_otghs) - writel(val, glue->control_otghs); -} - static void musb_do_idle(unsigned long _musb) { struct musb *musb = (void *)_musb; @@ -106,7 +88,7 @@ static void musb_do_idle(unsigned long _musb) musb->port1_status &= ~(USB_PORT_STAT_SUSPEND | MUSB_PORT_STAT_RESUME); musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16; - usb_hcd_poll_rh_status(musb_to_hcd(musb)); + usb_hcd_poll_rh_status(musb->hcd); /* NOTE: it might really be A_WAIT_BCON ... */ musb->xceiv->state = OTG_STATE_A_HOST; } @@ -136,7 +118,7 @@ static void omap2430_musb_try_idle(struct musb *musb, unsigned long timeout) if (musb->is_active || ((musb->a_wait_bcon == 0) && (musb->xceiv->state == OTG_STATE_A_WAIT_BCON))) { dev_dbg(musb->controller, "%s active, deleting timer\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); del_timer(&musb_idle_timer); last_timer = jiffies; return; @@ -153,7 +135,7 @@ static void omap2430_musb_try_idle(struct musb *musb, unsigned long timeout) last_timer = timeout; dev_dbg(musb->controller, "%s inactive, for idle timer for %lu ms\n", - otg_state_string(musb->xceiv->state), + usb_otg_state_string(musb->xceiv->state), (unsigned long)jiffies_to_msecs(timeout - jiffies)); mod_timer(&musb_idle_timer, timeout); } @@ -193,8 +175,7 @@ static void omap2430_musb_set_vbus(struct musb *musb, int is_on) } } - if (otg->set_vbus) - otg_set_vbus(otg, 1); + otg_set_vbus(otg, 1); } else { musb->is_active = 1; otg->default_a = 1; @@ -219,7 +200,7 @@ static void omap2430_musb_set_vbus(struct musb *musb, int is_on) dev_dbg(musb->controller, "VBUS %s, devctl %02x " /* otg %3x conf %08x prcm %08x */ "\n", - otg_state_string(musb->xceiv->state), + usb_otg_state_string(musb->xceiv->state), musb_readb(musb->mregs, MUSB_DEVCTL)); } @@ -255,11 +236,15 @@ static inline void omap2430_low_level_init(struct musb *musb) void omap_musb_mailbox(enum omap_musb_vbus_id_status status) { struct omap2430_glue *glue = _glue; - struct musb *musb = glue_to_musb(glue); + if (!glue) { + pr_err("%s: musb core is not yet initialized\n", __func__); + return; + } glue->status = status; - if (!musb) { - dev_err(glue->dev, "musb core is not yet ready\n"); + + if (!glue_to_musb(glue)) { + pr_err("%s: musb core is not yet ready\n", __func__); return; } @@ -269,10 +254,9 @@ EXPORT_SYMBOL_GPL(omap_musb_mailbox); static void omap_musb_set_mailbox(struct omap2430_glue *glue) { - u32 val; struct musb *musb = glue_to_musb(glue); struct device *dev = musb->controller; - struct musb_hdrc_platform_data *pdata = dev->platform_data; + struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev); struct omap_musb_board_data *data = pdata->board_data; struct usb_otg *otg = musb->xceiv->otg; @@ -285,8 +269,8 @@ static void omap_musb_set_mailbox(struct omap2430_glue *glue) musb->xceiv->last_event = USB_EVENT_ID; if (musb->gadget_driver) { pm_runtime_get_sync(dev); - val = AVALID | VBUSVALID; - omap4_usb_phy_mailbox(glue, val); + omap_control_usb_set_mode(glue->control_otghs, + USB_MODE_HOST); omap2430_musb_set_vbus(musb, 1); } break; @@ -299,8 +283,7 @@ static void omap_musb_set_mailbox(struct omap2430_glue *glue) musb->xceiv->last_event = USB_EVENT_VBUS; if (musb->gadget_driver) pm_runtime_get_sync(dev); - val = IDDIG | AVALID | VBUSVALID; - omap4_usb_phy_mailbox(glue, val); + omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE); break; case OMAP_MUSB_ID_FLOAT: @@ -309,20 +292,23 @@ static void omap_musb_set_mailbox(struct omap2430_glue *glue) musb->xceiv->last_event = USB_EVENT_NONE; if (musb->gadget_driver) { + omap2430_musb_set_vbus(musb, 0); pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev); } - if (data->interface_type == MUSB_INTERFACE_UTMI) { - if (musb->xceiv->otg->set_vbus) - otg_set_vbus(musb->xceiv->otg, 0); - } - val = SESSEND | IDDIG; - omap4_usb_phy_mailbox(glue, val); + if (data->interface_type == MUSB_INTERFACE_UTMI) + otg_set_vbus(musb->xceiv->otg, 0); + + omap_control_usb_set_mode(glue->control_otghs, + USB_MODE_DISCONNECT); break; default: dev_dbg(dev, "ID float\n"); } + + atomic_notifier_call_chain(&musb->xceiv->notifier, + musb->xceiv->last_event, NULL); } @@ -330,7 +316,13 @@ static void omap_musb_mailbox_work(struct work_struct *mailbox_work) { struct omap2430_glue *glue = container_of(mailbox_work, struct omap2430_glue, omap_musb_mailbox_work); + struct musb *musb = glue_to_musb(glue); + struct device *dev = musb->controller; + + pm_runtime_get_sync(dev); omap_musb_set_mailbox(glue); + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); } static irqreturn_t omap2430_musb_interrupt(int irq, void *__hci) @@ -359,19 +351,43 @@ static int omap2430_musb_init(struct musb *musb) int status = 0; struct device *dev = musb->controller; struct omap2430_glue *glue = dev_get_drvdata(dev->parent); - struct musb_hdrc_platform_data *plat = dev->platform_data; + struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); struct omap_musb_board_data *data = plat->board_data; /* We require some kind of external transceiver, hooked * up through ULPI. TWL4030-family PMICs include one, * which needs a driver, drivers aren't always needed. */ - musb->xceiv = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); - if (IS_ERR_OR_NULL(musb->xceiv)) { + if (dev->parent->of_node) { + musb->phy = devm_phy_get(dev->parent, "usb2-phy"); + + /* We can't totally remove musb->xceiv as of now because + * musb core uses xceiv.state and xceiv.otg. Once we have + * a separate state machine to handle otg, these can be moved + * out of xceiv and then we can start using the generic PHY + * framework + */ + musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent, + "usb-phy", 0); + } else { + musb->xceiv = devm_usb_get_phy_dev(dev, 0); + musb->phy = devm_phy_get(dev, "usb"); + } + + if (IS_ERR(musb->xceiv)) { + status = PTR_ERR(musb->xceiv); + + if (status == -ENXIO) + return status; + pr_err("HS USB OTG: no transceiver configured\n"); - return -ENODEV; + return -EPROBE_DEFER; } + if (IS_ERR(musb->phy)) { + pr_err("HS USB OTG: no PHY configured\n"); + return PTR_ERR(musb->phy); + } musb->isr = omap2430_musb_interrupt; status = pm_runtime_get_sync(dev); @@ -405,6 +421,9 @@ static int omap2430_musb_init(struct musb *musb) if (glue->status != OMAP_MUSB_UNKNOWN) omap_musb_set_mailbox(glue); + phy_init(musb->phy); + phy_power_on(musb->phy); + pm_runtime_put_noidle(musb->controller); return 0; @@ -415,18 +434,16 @@ err1: static void omap2430_musb_enable(struct musb *musb) { u8 devctl; - u32 val; unsigned long timeout = jiffies + msecs_to_jiffies(1000); struct device *dev = musb->controller; struct omap2430_glue *glue = dev_get_drvdata(dev->parent); - struct musb_hdrc_platform_data *pdata = dev->platform_data; + struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev); struct omap_musb_board_data *data = pdata->board_data; switch (glue->status) { case OMAP_MUSB_ID_GROUND: - val = AVALID | VBUSVALID; - omap4_usb_phy_mailbox(glue, val); + omap_control_usb_set_mode(glue->control_otghs, USB_MODE_HOST); if (data->interface_type != MUSB_INTERFACE_UTMI) break; devctl = musb_readb(musb->mregs, MUSB_DEVCTL); @@ -445,8 +462,7 @@ static void omap2430_musb_enable(struct musb *musb) break; case OMAP_MUSB_VBUS_VALID: - val = IDDIG | AVALID | VBUSVALID; - omap4_usb_phy_mailbox(glue, val); + omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE); break; default: @@ -456,14 +472,12 @@ static void omap2430_musb_enable(struct musb *musb) static void omap2430_musb_disable(struct musb *musb) { - u32 val; struct device *dev = musb->controller; struct omap2430_glue *glue = dev_get_drvdata(dev->parent); - if (glue->status != OMAP_MUSB_UNKNOWN) { - val = SESSEND | IDDIG; - omap4_usb_phy_mailbox(glue, val); - } + if (glue->status != OMAP_MUSB_UNKNOWN) + omap_control_usb_set_mode(glue->control_otghs, + USB_MODE_DISCONNECT); } static int omap2430_musb_exit(struct musb *musb) @@ -471,6 +485,8 @@ static int omap2430_musb_exit(struct musb *musb) del_timer_sync(&musb_idle_timer); omap2430_low_level_exit(musb); + phy_power_off(musb->phy); + phy_exit(musb->phy); return 0; } @@ -492,13 +508,13 @@ static u64 omap2430_dmamask = DMA_BIT_MASK(32); static int omap2430_probe(struct platform_device *pdev) { - struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; + struct resource musb_resources[3]; + struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); struct omap_musb_board_data *data; struct platform_device *musb; struct omap2430_glue *glue; struct device_node *np = pdev->dev.of_node; struct musb_hdrc_config *config; - struct resource *res; int ret = -ENOMEM; glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); @@ -520,49 +536,55 @@ static int omap2430_probe(struct platform_device *pdev) glue->dev = &pdev->dev; glue->musb = musb; glue->status = OMAP_MUSB_UNKNOWN; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 1); - - glue->control_otghs = devm_request_and_ioremap(&pdev->dev, res); - if (glue->control_otghs == NULL) - dev_dbg(&pdev->dev, "Failed to obtain control memory\n"); + glue->control_otghs = ERR_PTR(-ENODEV); if (np) { + struct device_node *control_node; + struct platform_device *control_pdev; + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) { dev_err(&pdev->dev, - "failed to allocate musb platfrom data\n"); - ret = -ENOMEM; + "failed to allocate musb platform data\n"); goto err2; } data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); if (!data) { dev_err(&pdev->dev, - "failed to allocate musb board data\n"); - ret = -ENOMEM; + "failed to allocate musb board data\n"); goto err2; } config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL); - if (!data) { + if (!config) { dev_err(&pdev->dev, "failed to allocate musb hdrc config\n"); goto err2; } of_property_read_u32(np, "mode", (u32 *)&pdata->mode); - of_property_read_u32(np, "interface_type", + of_property_read_u32(np, "interface-type", (u32 *)&data->interface_type); - of_property_read_u32(np, "num_eps", (u32 *)&config->num_eps); - of_property_read_u32(np, "ram_bits", (u32 *)&config->ram_bits); + of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps); + of_property_read_u32(np, "ram-bits", (u32 *)&config->ram_bits); of_property_read_u32(np, "power", (u32 *)&pdata->power); config->multipoint = of_property_read_bool(np, "multipoint"); pdata->board_data = data; pdata->config = config; - } + control_node = of_parse_phandle(np, "ctrl-module", 0); + if (control_node) { + control_pdev = of_find_device_by_node(control_node); + if (!control_pdev) { + dev_err(&pdev->dev, "Failed to get control device\n"); + ret = -EINVAL; + goto err2; + } + glue->control_otghs = &control_pdev->dev; + } + } pdata->platform_ops = &omap2430_ops; platform_set_drvdata(pdev, glue); @@ -575,8 +597,26 @@ static int omap2430_probe(struct platform_device *pdev) INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work); - ret = platform_device_add_resources(musb, pdev->resource, - pdev->num_resources); + memset(musb_resources, 0x00, sizeof(*musb_resources) * + ARRAY_SIZE(musb_resources)); + + musb_resources[0].name = pdev->resource[0].name; + musb_resources[0].start = pdev->resource[0].start; + musb_resources[0].end = pdev->resource[0].end; + musb_resources[0].flags = pdev->resource[0].flags; + + musb_resources[1].name = pdev->resource[1].name; + musb_resources[1].start = pdev->resource[1].start; + musb_resources[1].end = pdev->resource[1].end; + musb_resources[1].flags = pdev->resource[1].flags; + + musb_resources[2].name = pdev->resource[2].name; + musb_resources[2].start = pdev->resource[2].start; + musb_resources[2].end = pdev->resource[2].end; + musb_resources[2].flags = pdev->resource[2].flags; + + ret = platform_device_add_resources(musb, musb_resources, + ARRAY_SIZE(musb_resources)); if (ret) { dev_err(&pdev->dev, "failed to add resources\n"); goto err2; @@ -627,7 +667,6 @@ static int omap2430_runtime_suspend(struct device *dev) OTG_INTERFSEL); omap2430_low_level_exit(musb); - usb_phy_set_suspend(musb->xceiv, 1); } return 0; @@ -642,8 +681,6 @@ static int omap2430_runtime_resume(struct device *dev) omap2430_low_level_init(musb); musb_writel(musb->mregs, OTG_INTERFSEL, musb->context.otg_interfsel); - - usb_phy_set_suspend(musb->xceiv, 0); } return 0; diff --git a/drivers/usb/musb/omap2430.h b/drivers/usb/musb/omap2430.h index 8ef656659fc..1b5e83a9840 100644 --- a/drivers/usb/musb/omap2430.h +++ b/drivers/usb/musb/omap2430.h @@ -49,13 +49,4 @@ #define OTG_FORCESTDBY 0x414 # define ENABLEFORCE (1 << 0) -/* - * Control Module bit definitions - * XXX: Will be removed once we have a driver for control module. - */ -#define AVALID BIT(0) -#define BVALID BIT(1) -#define VBUSVALID BIT(2) -#define SESSEND BIT(3) -#define IDDIG BIT(4) #endif /* __MUSB_OMAP243X_H__ */ diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c index 3969813c217..159ef4be1ef 100644 --- a/drivers/usb/musb/tusb6010.c +++ b/drivers/usb/musb/tusb6010.c @@ -18,20 +18,20 @@ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/err.h> -#include <linux/init.h> #include <linux/prefetch.h> #include <linux/usb.h> #include <linux/irq.h> #include <linux/io.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> -#include <linux/usb/nop-usb-xceiv.h> +#include <linux/usb/usb_phy_generic.h> #include "musb_core.h" struct tusb6010_glue { struct device *dev; struct platform_device *musb; + struct platform_device *phy; }; static void tusb_musb_set_vbus(struct musb *musb, int is_on); @@ -43,7 +43,7 @@ static void tusb_musb_set_vbus(struct musb *musb, int is_on); * Checks the revision. We need to use the DMA register as 3.0 does not * have correct versions for TUSB_PRCM_REV or TUSB_INT_CTRL_REV. */ -u8 tusb_get_revision(struct musb *musb) +static u8 tusb_get_revision(struct musb *musb) { void __iomem *tbase = musb->ctrl_base; u32 die_id; @@ -59,14 +59,13 @@ u8 tusb_get_revision(struct musb *musb) return rev; } -EXPORT_SYMBOL_GPL(tusb_get_revision); -static int tusb_print_revision(struct musb *musb) +static void tusb_print_revision(struct musb *musb) { void __iomem *tbase = musb->ctrl_base; u8 rev; - rev = tusb_get_revision(musb); + rev = musb->tusb_revision; pr_info("tusb: %s%i.%i %s%i.%i %s%i.%i %s%i.%i %s%i %s%i.%i\n", "prcm", @@ -85,8 +84,6 @@ static int tusb_print_revision(struct musb *musb) TUSB_DIDR1_HI_CHIP_REV(musb_readl(tbase, TUSB_DIDR1_HI)), "rev", TUSB_REV_MAJOR(rev), TUSB_REV_MINOR(rev)); - - return tusb_get_revision(musb); } #define WBUS_QUIRK_MASK (TUSB_PHY_OTG_CTRL_TESTM2 | TUSB_PHY_OTG_CTRL_TESTM1 \ @@ -350,7 +347,7 @@ static void tusb_allow_idle(struct musb *musb, u32 wakeup_enables) u32 reg; if ((wakeup_enables & TUSB_PRCM_WBUS) - && (tusb_get_revision(musb) == TUSB_REV_30)) + && (musb->tusb_revision == TUSB_REV_30)) tusb_wbus_quirk(musb, 1); tusb_set_clock_source(musb, 0); @@ -423,7 +420,7 @@ static void musb_do_idle(unsigned long _musb) && (musb->idle_timeout == 0 || time_after(jiffies, musb->idle_timeout))) { dev_dbg(musb->controller, "Nothing connected %s, turning off VBUS\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); } /* FALLTHROUGH */ case OTG_STATE_A_IDLE: @@ -478,7 +475,7 @@ static void tusb_musb_try_idle(struct musb *musb, unsigned long timeout) if (musb->is_active || ((musb->a_wait_bcon == 0) && (musb->xceiv->state == OTG_STATE_A_WAIT_BCON))) { dev_dbg(musb->controller, "%s active, deleting timer\n", - otg_state_string(musb->xceiv->state)); + usb_otg_state_string(musb->xceiv->state)); del_timer(&musb_idle_timer); last_timer = jiffies; return; @@ -495,7 +492,7 @@ static void tusb_musb_try_idle(struct musb *musb, unsigned long timeout) last_timer = timeout; dev_dbg(musb->controller, "%s inactive, for idle timer for %lu ms\n", - otg_state_string(musb->xceiv->state), + usb_otg_state_string(musb->xceiv->state), (unsigned long)jiffies_to_msecs(timeout - jiffies)); mod_timer(&musb_idle_timer, timeout); } @@ -571,7 +568,7 @@ static void tusb_musb_set_vbus(struct musb *musb, int is_on) musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); dev_dbg(musb->controller, "VBUS %s, devctl %02x otg %3x conf %08x prcm %08x\n", - otg_state_string(musb->xceiv->state), + usb_otg_state_string(musb->xceiv->state), musb_readb(musb->mregs, MUSB_DEVCTL), musb_readl(tbase, TUSB_DEV_OTG_STAT), conf, prcm); @@ -678,13 +675,13 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase) musb->is_active = 0; } dev_dbg(musb->controller, "vbus change, %s, otg %03x\n", - otg_state_string(musb->xceiv->state), otg_stat); + usb_otg_state_string(musb->xceiv->state), otg_stat); idle_timeout = jiffies + (1 * HZ); schedule_work(&musb->irq_work); } else /* A-dev state machine */ { dev_dbg(musb->controller, "vbus change, %s, otg %03x\n", - otg_state_string(musb->xceiv->state), otg_stat); + usb_otg_state_string(musb->xceiv->state), otg_stat); switch (musb->xceiv->state) { case OTG_STATE_A_IDLE: @@ -733,7 +730,7 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase) u8 devctl; dev_dbg(musb->controller, "%s timer, %03x\n", - otg_state_string(musb->xceiv->state), otg_stat); + usb_otg_state_string(musb->xceiv->state), otg_stat); switch (musb->xceiv->state) { case OTG_STATE_A_WAIT_VRISE: @@ -798,7 +795,7 @@ static irqreturn_t tusb_musb_interrupt(int irq, void *__hci) u32 reg; u32 i; - if (tusb_get_revision(musb) == TUSB_REV_30) + if (musb->tusb_revision == TUSB_REV_30) tusb_wbus_quirk(musb, 0); /* there are issues re-locking the PLL on wakeup ... */ @@ -1012,10 +1009,11 @@ static int tusb_musb_start(struct musb *musb) goto err; } - ret = tusb_print_revision(musb); - if (ret < 2) { + musb->tusb_revision = tusb_get_revision(musb); + tusb_print_revision(musb); + if (musb->tusb_revision < 2) { printk(KERN_ERR "tusb: Unsupported TUSB6010 revision %i\n", - ret); + musb->tusb_revision); goto err; } @@ -1066,10 +1064,9 @@ static int tusb_musb_init(struct musb *musb) void __iomem *sync = NULL; int ret; - usb_nop_xceiv_register(); musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); if (IS_ERR_OR_NULL(musb->xceiv)) - return -ENODEV; + return -EPROBE_DEFER; pdev = to_platform_device(musb->controller); @@ -1118,7 +1115,6 @@ done: iounmap(sync); usb_put_phy(musb->xceiv); - usb_nop_xceiv_unregister(); } return ret; } @@ -1134,7 +1130,6 @@ static int tusb_musb_exit(struct musb *musb) iounmap(musb->sync_va); usb_put_phy(musb->xceiv); - usb_nop_xceiv_unregister(); return 0; } @@ -1152,14 +1147,19 @@ static const struct musb_platform_ops tusb_ops = { .set_vbus = tusb_musb_set_vbus, }; -static u64 tusb_dmamask = DMA_BIT_MASK(32); +static const struct platform_device_info tusb_dev_info = { + .name = "musb-hdrc", + .id = PLATFORM_DEVID_AUTO, + .dma_mask = DMA_BIT_MASK(32), +}; static int tusb_probe(struct platform_device *pdev) { - struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; + struct resource musb_resources[3]; + struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); struct platform_device *musb; struct tusb6010_glue *glue; - + struct platform_device_info pinfo; int ret = -ENOMEM; glue = kzalloc(sizeof(*glue), GFP_KERNEL); @@ -1168,48 +1168,48 @@ static int tusb_probe(struct platform_device *pdev) goto err0; } - musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); - if (!musb) { - dev_err(&pdev->dev, "failed to allocate musb device\n"); - goto err1; - } - - musb->dev.parent = &pdev->dev; - musb->dev.dma_mask = &tusb_dmamask; - musb->dev.coherent_dma_mask = tusb_dmamask; - glue->dev = &pdev->dev; - glue->musb = musb; pdata->platform_ops = &tusb_ops; + usb_phy_generic_register(); platform_set_drvdata(pdev, glue); - ret = platform_device_add_resources(musb, pdev->resource, - pdev->num_resources); - if (ret) { - dev_err(&pdev->dev, "failed to add resources\n"); - goto err3; - } - - ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); - if (ret) { - dev_err(&pdev->dev, "failed to add platform_data\n"); - goto err3; - } - - ret = platform_device_add(musb); - if (ret) { - dev_err(&pdev->dev, "failed to register musb device\n"); + memset(musb_resources, 0x00, sizeof(*musb_resources) * + ARRAY_SIZE(musb_resources)); + + musb_resources[0].name = pdev->resource[0].name; + musb_resources[0].start = pdev->resource[0].start; + musb_resources[0].end = pdev->resource[0].end; + musb_resources[0].flags = pdev->resource[0].flags; + + musb_resources[1].name = pdev->resource[1].name; + musb_resources[1].start = pdev->resource[1].start; + musb_resources[1].end = pdev->resource[1].end; + musb_resources[1].flags = pdev->resource[1].flags; + + musb_resources[2].name = pdev->resource[2].name; + musb_resources[2].start = pdev->resource[2].start; + musb_resources[2].end = pdev->resource[2].end; + musb_resources[2].flags = pdev->resource[2].flags; + + pinfo = tusb_dev_info; + pinfo.parent = &pdev->dev; + pinfo.res = musb_resources; + pinfo.num_res = ARRAY_SIZE(musb_resources); + pinfo.data = pdata; + pinfo.size_data = sizeof(*pdata); + + glue->musb = musb = platform_device_register_full(&pinfo); + if (IS_ERR(musb)) { + ret = PTR_ERR(musb); + dev_err(&pdev->dev, "failed to register musb device: %d\n", ret); goto err3; } return 0; err3: - platform_device_put(musb); - -err1: kfree(glue); err0: @@ -1221,6 +1221,7 @@ static int tusb_remove(struct platform_device *pdev) struct tusb6010_glue *glue = platform_get_drvdata(pdev); platform_device_unregister(glue->musb); + usb_phy_generic_unregister(glue->phy); kfree(glue); return 0; diff --git a/drivers/usb/musb/tusb6010.h b/drivers/usb/musb/tusb6010.h index 35c933a5d99..aec86c86ce3 100644 --- a/drivers/usb/musb/tusb6010.h +++ b/drivers/usb/musb/tusb6010.h @@ -12,14 +12,6 @@ #ifndef __TUSB6010_H__ #define __TUSB6010_H__ -extern u8 tusb_get_revision(struct musb *musb); - -#ifdef CONFIG_USB_TUSB6010 -#define musb_in_tusb() 1 -#else -#define musb_in_tusb() 0 -#endif - #ifdef CONFIG_USB_TUSB_OMAP_DMA #define tusb_dma_omap() 1 #else diff --git a/drivers/usb/musb/tusb6010_omap.c b/drivers/usb/musb/tusb6010_omap.c index 98df17c984a..3ce152c0408 100644 --- a/drivers/usb/musb/tusb6010_omap.c +++ b/drivers/usb/musb/tusb6010_omap.c @@ -11,7 +11,6 @@ #include <linux/module.h> #include <linux/kernel.h> #include <linux/errno.h> -#include <linux/init.h> #include <linux/usb.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> @@ -66,28 +65,6 @@ struct tusb_omap_dma { unsigned multichannel:1; }; -static int tusb_omap_dma_start(struct dma_controller *c) -{ - struct tusb_omap_dma *tusb_dma; - - tusb_dma = container_of(c, struct tusb_omap_dma, controller); - - /* dev_dbg(musb->controller, "ep%i ch: %i\n", chdat->epnum, chdat->ch); */ - - return 0; -} - -static int tusb_omap_dma_stop(struct dma_controller *c) -{ - struct tusb_omap_dma *tusb_dma; - - tusb_dma = container_of(c, struct tusb_omap_dma, controller); - - /* dev_dbg(musb->controller, "ep%i ch: %i\n", chdat->epnum, chdat->ch); */ - - return 0; -} - /* * Allocate dmareq0 to the current channel unless it's already taken */ @@ -695,14 +672,12 @@ struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *ba tusb_dma->dmareq = -1; tusb_dma->sync_dev = -1; - tusb_dma->controller.start = tusb_omap_dma_start; - tusb_dma->controller.stop = tusb_omap_dma_stop; tusb_dma->controller.channel_alloc = tusb_omap_dma_allocate; tusb_dma->controller.channel_release = tusb_omap_dma_release; tusb_dma->controller.channel_program = tusb_omap_dma_program; tusb_dma->controller.channel_abort = tusb_omap_dma_abort; - if (tusb_get_revision(musb) >= TUSB_REV_30) + if (musb->tusb_revision >= TUSB_REV_30) tusb_dma->multichannel = 1; for (i = 0; i < MAX_DMAREQ; i++) { diff --git a/drivers/usb/musb/ux500.c b/drivers/usb/musb/ux500.c index a27ca1a9c99..f202e508846 100644 --- a/drivers/usb/musb/ux500.c +++ b/drivers/usb/musb/ux500.c @@ -21,14 +21,22 @@ #include <linux/module.h> #include <linux/kernel.h> -#include <linux/init.h> #include <linux/clk.h> #include <linux/err.h> #include <linux/io.h> +#include <linux/of.h> #include <linux/platform_device.h> +#include <linux/usb/musb-ux500.h> #include "musb_core.h" +static struct musb_hdrc_config ux500_musb_hdrc_config = { + .multipoint = true, + .dyn_fifo = true, + .num_eps = 16, + .ram_bits = 16, +}; + struct ux500_glue { struct device *dev; struct platform_device *musb; @@ -36,6 +44,98 @@ struct ux500_glue { }; #define glue_to_musb(g) platform_get_drvdata(g->musb) +static void ux500_musb_set_vbus(struct musb *musb, int is_on) +{ + u8 devctl; + unsigned long timeout = jiffies + msecs_to_jiffies(1000); + /* HDRC controls CPEN, but beware current surges during device + * connect. They can trigger transient overcurrent conditions + * that must be ignored. + */ + + devctl = musb_readb(musb->mregs, MUSB_DEVCTL); + + if (is_on) { + if (musb->xceiv->state == OTG_STATE_A_IDLE) { + /* start the session */ + devctl |= MUSB_DEVCTL_SESSION; + musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); + /* + * Wait for the musb to set as A device to enable the + * VBUS + */ + while (musb_readb(musb->mregs, MUSB_DEVCTL) & 0x80) { + + if (time_after(jiffies, timeout)) { + dev_err(musb->controller, + "configured as A device timeout"); + break; + } + } + + } else { + musb->is_active = 1; + musb->xceiv->otg->default_a = 1; + musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; + devctl |= MUSB_DEVCTL_SESSION; + MUSB_HST_MODE(musb); + } + } else { + musb->is_active = 0; + + /* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and jumping + * right to B_IDLE... + */ + musb->xceiv->otg->default_a = 0; + devctl &= ~MUSB_DEVCTL_SESSION; + MUSB_DEV_MODE(musb); + } + musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); + + /* + * Devctl values will be updated after vbus goes below + * session_valid. The time taken depends on the capacitance + * on VBUS line. The max discharge time can be upto 1 sec + * as per the spec. Typically on our platform, it is 200ms + */ + if (!is_on) + mdelay(200); + + dev_dbg(musb->controller, "VBUS %s, devctl %02x\n", + usb_otg_state_string(musb->xceiv->state), + musb_readb(musb->mregs, MUSB_DEVCTL)); +} + +static int musb_otg_notifications(struct notifier_block *nb, + unsigned long event, void *unused) +{ + struct musb *musb = container_of(nb, struct musb, nb); + + dev_dbg(musb->controller, "musb_otg_notifications %ld %s\n", + event, usb_otg_state_string(musb->xceiv->state)); + + switch (event) { + case UX500_MUSB_ID: + dev_dbg(musb->controller, "ID GND\n"); + ux500_musb_set_vbus(musb, 1); + break; + case UX500_MUSB_VBUS: + dev_dbg(musb->controller, "VBUS Connect\n"); + break; + case UX500_MUSB_NONE: + dev_dbg(musb->controller, "VBUS Disconnect\n"); + if (is_host_active(musb)) + ux500_musb_set_vbus(musb, 0); + else + musb->xceiv->state = OTG_STATE_B_IDLE; + break; + default: + dev_dbg(musb->controller, "ID float\n"); + return NOTIFY_DONE; + } + return NOTIFY_OK; +} + static irqreturn_t ux500_musb_interrupt(int irq, void *__hci) { unsigned long flags; @@ -58,10 +158,19 @@ static irqreturn_t ux500_musb_interrupt(int irq, void *__hci) static int ux500_musb_init(struct musb *musb) { + int status; + musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); if (IS_ERR_OR_NULL(musb->xceiv)) { pr_err("HS USB OTG: no transceiver configured\n"); - return -ENODEV; + return -EPROBE_DEFER; + } + + musb->nb.notifier_call = musb_otg_notifications; + status = usb_register_notifier(musb->xceiv, &musb->nb); + if (status < 0) { + dev_dbg(musb->controller, "notification register failed\n"); + return status; } musb->isr = ux500_musb_interrupt; @@ -71,6 +180,8 @@ static int ux500_musb_init(struct musb *musb) static int ux500_musb_exit(struct musb *musb) { + usb_unregister_notifier(musb->xceiv, &musb->nb); + usb_put_phy(musb->xceiv); return 0; @@ -79,16 +190,62 @@ static int ux500_musb_exit(struct musb *musb) static const struct musb_platform_ops ux500_ops = { .init = ux500_musb_init, .exit = ux500_musb_exit, + + .set_vbus = ux500_musb_set_vbus, }; +static struct musb_hdrc_platform_data * +ux500_of_probe(struct platform_device *pdev, struct device_node *np) +{ + struct musb_hdrc_platform_data *pdata; + const char *mode; + int strlen; + + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return NULL; + + mode = of_get_property(np, "dr_mode", &strlen); + if (!mode) { + dev_err(&pdev->dev, "No 'dr_mode' property found\n"); + return NULL; + } + + if (strlen > 0) { + if (!strcmp(mode, "host")) + pdata->mode = MUSB_HOST; + if (!strcmp(mode, "otg")) + pdata->mode = MUSB_OTG; + if (!strcmp(mode, "peripheral")) + pdata->mode = MUSB_PERIPHERAL; + } + + return pdata; +} + static int ux500_probe(struct platform_device *pdev) { - struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; + struct resource musb_resources[2]; + struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); + struct device_node *np = pdev->dev.of_node; struct platform_device *musb; struct ux500_glue *glue; struct clk *clk; int ret = -ENOMEM; + if (!pdata) { + if (np) { + pdata = ux500_of_probe(pdev, np); + if (!pdata) + goto err0; + + pdev->dev.platform_data = pdata; + } else { + dev_err(&pdev->dev, "no pdata or device tree found\n"); + goto err0; + } + } + glue = kzalloc(sizeof(*glue), GFP_KERNEL); if (!glue) { dev_err(&pdev->dev, "failed to allocate glue context\n"); @@ -101,21 +258,21 @@ static int ux500_probe(struct platform_device *pdev) goto err1; } - clk = clk_get(&pdev->dev, "usb"); + clk = clk_get(&pdev->dev, NULL); if (IS_ERR(clk)) { dev_err(&pdev->dev, "failed to get clock\n"); ret = PTR_ERR(clk); goto err3; } - ret = clk_enable(clk); + ret = clk_prepare_enable(clk); if (ret) { dev_err(&pdev->dev, "failed to enable clock\n"); goto err4; } musb->dev.parent = &pdev->dev; - musb->dev.dma_mask = pdev->dev.dma_mask; + musb->dev.dma_mask = &pdev->dev.coherent_dma_mask; musb->dev.coherent_dma_mask = pdev->dev.coherent_dma_mask; glue->dev = &pdev->dev; @@ -123,11 +280,25 @@ static int ux500_probe(struct platform_device *pdev) glue->clk = clk; pdata->platform_ops = &ux500_ops; + pdata->config = &ux500_musb_hdrc_config; platform_set_drvdata(pdev, glue); - ret = platform_device_add_resources(musb, pdev->resource, - pdev->num_resources); + memset(musb_resources, 0x00, sizeof(*musb_resources) * + ARRAY_SIZE(musb_resources)); + + musb_resources[0].name = pdev->resource[0].name; + musb_resources[0].start = pdev->resource[0].start; + musb_resources[0].end = pdev->resource[0].end; + musb_resources[0].flags = pdev->resource[0].flags; + + musb_resources[1].name = pdev->resource[1].name; + musb_resources[1].start = pdev->resource[1].start; + musb_resources[1].end = pdev->resource[1].end; + musb_resources[1].flags = pdev->resource[1].flags; + + ret = platform_device_add_resources(musb, musb_resources, + ARRAY_SIZE(musb_resources)); if (ret) { dev_err(&pdev->dev, "failed to add resources\n"); goto err5; @@ -148,7 +319,7 @@ static int ux500_probe(struct platform_device *pdev) return 0; err5: - clk_disable(clk); + clk_disable_unprepare(clk); err4: clk_put(clk); @@ -168,7 +339,7 @@ static int ux500_remove(struct platform_device *pdev) struct ux500_glue *glue = platform_get_drvdata(pdev); platform_device_unregister(glue->musb); - clk_disable(glue->clk); + clk_disable_unprepare(glue->clk); clk_put(glue->clk); kfree(glue); @@ -182,7 +353,7 @@ static int ux500_suspend(struct device *dev) struct musb *musb = glue_to_musb(glue); usb_phy_set_suspend(musb->xceiv, 1); - clk_disable(glue->clk); + clk_disable_unprepare(glue->clk); return 0; } @@ -193,7 +364,7 @@ static int ux500_resume(struct device *dev) struct musb *musb = glue_to_musb(glue); int ret; - ret = clk_enable(glue->clk); + ret = clk_prepare_enable(glue->clk); if (ret) { dev_err(dev, "failed to enable clock\n"); return ret; @@ -203,23 +374,22 @@ static int ux500_resume(struct device *dev) return 0; } +#endif -static const struct dev_pm_ops ux500_pm_ops = { - .suspend = ux500_suspend, - .resume = ux500_resume, -}; +static SIMPLE_DEV_PM_OPS(ux500_pm_ops, ux500_suspend, ux500_resume); -#define DEV_PM_OPS (&ux500_pm_ops) -#else -#define DEV_PM_OPS NULL -#endif +static const struct of_device_id ux500_match[] = { + { .compatible = "stericsson,db8500-musb", }, + {} +}; static struct platform_driver ux500_driver = { .probe = ux500_probe, .remove = ux500_remove, .driver = { .name = "musb-ux500", - .pm = DEV_PM_OPS, + .pm = &ux500_pm_ops, + .of_match_table = ux500_match, }, }; diff --git a/drivers/usb/musb/ux500_dma.c b/drivers/usb/musb/ux500_dma.c index 039e567dd3b..9aad00f11bd 100644 --- a/drivers/usb/musb/ux500_dma.c +++ b/drivers/usb/musb/ux500_dma.c @@ -1,7 +1,7 @@ /* * drivers/usb/musb/ux500_dma.c * - * U8500 and U5500 DMA support code + * U8500 DMA support code * * Copyright (C) 2009 STMicroelectronics * Copyright (C) 2011 ST-Ericsson SA @@ -30,9 +30,15 @@ #include <linux/dma-mapping.h> #include <linux/dmaengine.h> #include <linux/pfn.h> +#include <linux/sizes.h> #include <linux/platform_data/usb-musb-ux500.h> #include "musb_core.h" +static const char *iep_chan_names[] = { "iep_1_9", "iep_2_10", "iep_3_11", "iep_4_12", + "iep_5_13", "iep_6_14", "iep_7_15", "iep_8" }; +static const char *oep_chan_names[] = { "oep_1_9", "oep_2_10", "oep_3_11", "oep_4_12", + "oep_5_13", "oep_6_14", "oep_7_15", "oep_8" }; + struct ux500_dma_channel { struct dma_channel channel; struct ux500_dma_controller *controller; @@ -47,16 +53,14 @@ struct ux500_dma_channel { struct ux500_dma_controller { struct dma_controller controller; - struct ux500_dma_channel rx_channel[UX500_MUSB_DMA_NUM_RX_CHANNELS]; - struct ux500_dma_channel tx_channel[UX500_MUSB_DMA_NUM_TX_CHANNELS]; - u32 num_rx_channels; - u32 num_tx_channels; + struct ux500_dma_channel rx_channel[UX500_MUSB_DMA_NUM_RX_TX_CHANNELS]; + struct ux500_dma_channel tx_channel[UX500_MUSB_DMA_NUM_RX_TX_CHANNELS]; void *private_data; dma_addr_t phy_base; }; /* Work function invoked from DMA callback to handle rx transfers. */ -void ux500_dma_callback(void *private_data) +static void ux500_dma_callback(void *private_data) { struct dma_channel *channel = private_data; struct ux500_dma_channel *ux500_channel = channel->private_data; @@ -70,8 +74,7 @@ void ux500_dma_callback(void *private_data) spin_lock_irqsave(&musb->lock, flags); ux500_channel->channel.actual_len = ux500_channel->cur_len; ux500_channel->channel.status = MUSB_DMA_STATUS_FREE; - musb_dma_completion(musb, hw_ep->epnum, - ux500_channel->is_tx); + musb_dma_completion(musb, hw_ep->epnum, ux500_channel->is_tx); spin_unlock_irqrestore(&musb->lock, flags); } @@ -93,8 +96,9 @@ static bool ux500_configure_channel(struct dma_channel *channel, struct musb *musb = ux500_channel->controller->private_data; dev_dbg(musb->controller, - "packet_sz=%d, mode=%d, dma_addr=0x%x, len=%d is_tx=%d\n", - packet_sz, mode, dma_addr, len, ux500_channel->is_tx); + "packet_sz=%d, mode=%d, dma_addr=0x%llu, len=%d is_tx=%d\n", + packet_sz, mode, (unsigned long long) dma_addr, + len, ux500_channel->is_tx); ux500_channel->cur_len = len; @@ -142,19 +146,15 @@ static struct dma_channel *ux500_dma_channel_allocate(struct dma_controller *c, struct ux500_dma_channel *ux500_channel = NULL; struct musb *musb = controller->private_data; u8 ch_num = hw_ep->epnum - 1; - u32 max_ch; - /* Max 8 DMA channels (0 - 7). Each DMA channel can only be allocated + /* 8 DMA channels (0 - 7). Each DMA channel can only be allocated * to specified hw_ep. For example DMA channel 0 can only be allocated * to hw_ep 1 and 9. */ if (ch_num > 7) ch_num -= 8; - max_ch = is_tx ? controller->num_tx_channels : - controller->num_rx_channels; - - if (ch_num >= max_ch) + if (ch_num >= UX500_MUSB_DMA_NUM_RX_TX_CHANNELS) return NULL; ux500_channel = is_tx ? &(controller->tx_channel[ch_num]) : @@ -191,7 +191,7 @@ static int ux500_dma_is_compatible(struct dma_channel *channel, u16 maxpacket, void *buf, u32 length) { if ((maxpacket & 0x3) || - ((int)buf & 0x3) || + ((unsigned long int) buf & 0x3) || (length < 512) || (length & 0x3)) return false; @@ -254,15 +254,13 @@ static int ux500_dma_channel_abort(struct dma_channel *channel) return 0; } -static int ux500_dma_controller_stop(struct dma_controller *c) +static void ux500_dma_controller_stop(struct ux500_dma_controller *controller) { - struct ux500_dma_controller *controller = container_of(c, - struct ux500_dma_controller, controller); struct ux500_dma_channel *ux500_channel; struct dma_channel *channel; u8 ch_num; - for (ch_num = 0; ch_num < controller->num_rx_channels; ch_num++) { + for (ch_num = 0; ch_num < UX500_MUSB_DMA_NUM_RX_TX_CHANNELS; ch_num++) { channel = &controller->rx_channel[ch_num].channel; ux500_channel = channel->private_data; @@ -272,7 +270,7 @@ static int ux500_dma_controller_stop(struct dma_controller *c) dma_release_channel(ux500_channel->dma_chan); } - for (ch_num = 0; ch_num < controller->num_tx_channels; ch_num++) { + for (ch_num = 0; ch_num < UX500_MUSB_DMA_NUM_RX_TX_CHANNELS; ch_num++) { channel = &controller->tx_channel[ch_num].channel; ux500_channel = channel->private_data; @@ -281,46 +279,44 @@ static int ux500_dma_controller_stop(struct dma_controller *c) if (ux500_channel->dma_chan) dma_release_channel(ux500_channel->dma_chan); } - - return 0; } -static int ux500_dma_controller_start(struct dma_controller *c) +static int ux500_dma_controller_start(struct ux500_dma_controller *controller) { - struct ux500_dma_controller *controller = container_of(c, - struct ux500_dma_controller, controller); struct ux500_dma_channel *ux500_channel = NULL; struct musb *musb = controller->private_data; struct device *dev = musb->controller; - struct musb_hdrc_platform_data *plat = dev->platform_data; - struct ux500_musb_board_data *data = plat->board_data; + struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); + struct ux500_musb_board_data *data; struct dma_channel *dma_channel = NULL; + char **chan_names; u32 ch_num; u8 dir; u8 is_tx = 0; void **param_array; struct ux500_dma_channel *channel_array; - u32 ch_count; dma_cap_mask_t mask; - if ((data->num_rx_channels > UX500_MUSB_DMA_NUM_RX_CHANNELS) || - (data->num_tx_channels > UX500_MUSB_DMA_NUM_TX_CHANNELS)) + if (!plat) { + dev_err(musb->controller, "No platform data\n"); return -EINVAL; + } - controller->num_rx_channels = data->num_rx_channels; - controller->num_tx_channels = data->num_tx_channels; + data = plat->board_data; dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); /* Prepare the loop for RX channels */ channel_array = controller->rx_channel; - ch_count = data->num_rx_channels; - param_array = data->dma_rx_param_array; + param_array = data ? data->dma_rx_param_array : NULL; + chan_names = (char **)iep_chan_names; for (dir = 0; dir < 2; dir++) { - for (ch_num = 0; ch_num < ch_count; ch_num++) { + for (ch_num = 0; + ch_num < UX500_MUSB_DMA_NUM_RX_TX_CHANNELS; + ch_num++) { ux500_channel = &channel_array[ch_num]; ux500_channel->controller = controller; ux500_channel->ch_num = ch_num; @@ -331,15 +327,25 @@ static int ux500_dma_controller_start(struct dma_controller *c) dma_channel->status = MUSB_DMA_STATUS_FREE; dma_channel->max_len = SZ_16M; - ux500_channel->dma_chan = dma_request_channel(mask, - data->dma_filter, - param_array[ch_num]); + ux500_channel->dma_chan = + dma_request_slave_channel(dev, chan_names[ch_num]); + + if (!ux500_channel->dma_chan) + ux500_channel->dma_chan = + dma_request_channel(mask, + data ? + data->dma_filter : + NULL, + param_array ? + param_array[ch_num] : + NULL); + if (!ux500_channel->dma_chan) { ERR("Dma pipe allocation error dir=%d ch=%d\n", dir, ch_num); /* Release already allocated channels */ - ux500_dma_controller_stop(c); + ux500_dma_controller_stop(controller); return -EBUSY; } @@ -348,8 +354,8 @@ static int ux500_dma_controller_start(struct dma_controller *c) /* Prepare the loop for TX channels */ channel_array = controller->tx_channel; - ch_count = data->num_tx_channels; - param_array = data->dma_tx_param_array; + param_array = data ? data->dma_tx_param_array : NULL; + chan_names = (char **)oep_chan_names; is_tx = 1; } @@ -361,32 +367,46 @@ void dma_controller_destroy(struct dma_controller *c) struct ux500_dma_controller *controller = container_of(c, struct ux500_dma_controller, controller); + ux500_dma_controller_stop(controller); kfree(controller); } -struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *base) +struct dma_controller *dma_controller_create(struct musb *musb, + void __iomem *base) { struct ux500_dma_controller *controller; struct platform_device *pdev = to_platform_device(musb->controller); struct resource *iomem; + int ret; controller = kzalloc(sizeof(*controller), GFP_KERNEL); if (!controller) - return NULL; + goto kzalloc_fail; controller->private_data = musb; /* Save physical address for DMA controller. */ iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!iomem) { + dev_err(musb->controller, "no memory resource defined\n"); + goto plat_get_fail; + } + controller->phy_base = (dma_addr_t) iomem->start; - controller->controller.start = ux500_dma_controller_start; - controller->controller.stop = ux500_dma_controller_stop; controller->controller.channel_alloc = ux500_dma_channel_allocate; controller->controller.channel_release = ux500_dma_channel_release; controller->controller.channel_program = ux500_dma_channel_program; controller->controller.channel_abort = ux500_dma_channel_abort; controller->controller.is_compatible = ux500_dma_is_compatible; + ret = ux500_dma_controller_start(controller); + if (ret) + goto plat_get_fail; return &controller->controller; + +plat_get_fail: + kfree(controller); +kzalloc_fail: + return NULL; } |