diff options
Diffstat (limited to 'drivers/usb/musb/musb_dsps.c')
| -rw-r--r-- | drivers/usb/musb/musb_dsps.c | 637 |
1 files changed, 378 insertions, 259 deletions
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index 23db42db761..09529f94e72 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -29,21 +29,28 @@ * da8xx.c would be merged to this file after testing. */ -#include <linux/init.h> #include <linux/io.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/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 <plat/usb.h> +#include <linux/debugfs.h> #include "musb_core.h" +static const struct of_device_id musb_dsps_of_match[]; + /** * avoid using musb_readx()/musb_writex() as glue layer should not be * dependent on musb core layer symbols. @@ -69,7 +76,6 @@ struct dsps_musb_wrapper { u16 revision; u16 control; u16 status; - u16 eoi; u16 epintr_set; u16 epintr_clear; u16 epintr_status; @@ -78,6 +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; @@ -101,11 +109,24 @@ struct dsps_musb_wrapper { /* bit positions for mode */ unsigned iddig:5; + unsigned iddig_mux:5; /* miscellaneous stuff */ - u32 musb_core_offset; u8 poll_seconds; }; +/* + * register shadow for suspend + */ +struct dsps_context { + u32 control; + u32 epintr; + u32 coreintr; + u32 phy_utmi; + u32 mode; + u32 tx_mode; + u32 rx_mode; +}; + /** * DSPS glue structure. */ @@ -114,8 +135,68 @@ struct dsps_glue { struct platform_device *musb; /* child musb pdev */ const struct dsps_musb_wrapper *wrp; /* wrapper register offsets */ struct timer_list timer; /* otg_workaround timer */ + unsigned long last_timer; /* last timer data for each instance */ + + struct dsps_context context; + struct debugfs_regset32 regset; + struct dentry *dbgfs_root; }; +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 }, +}; + +static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout) +{ + struct device *dev = musb->controller; + 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", + 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; + + 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 */ @@ -136,9 +217,9 @@ static void dsps_musb_enable(struct musb *musb) dsps_writel(reg_base, wrp->epintr_set, epmask); dsps_writel(reg_base, wrp->coreintr_set, coremask); /* Force the DRVVBUS IRQ so we can start polling for ID change. */ - if (is_otg_enabled(musb)) - dsps_writel(reg_base, wrp->coreintr_set, - (1 << wrp->drvvbus) << wrp->usb_shift); + dsps_writel(reg_base, wrp->coreintr_set, + (1 << wrp->drvvbus) << wrp->usb_shift); + dsps_musb_try_idle(musb, 0); } /** @@ -156,7 +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) @@ -164,11 +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->parent); - struct dsps_glue *glue = platform_get_drvdata(pdev); + 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 @@ -176,15 +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); @@ -192,72 +274,27 @@ 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: - if (!is_peripheral_enabled(musb)) - break; - - devctl = dsps_readb(mregs, MUSB_DEVCTL); - if (devctl & MUSB_DEVCTL_BDEVICE) - mod_timer(&glue->timer, - 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->parent); - struct dsps_glue *glue = platform_get_drvdata(pdev); - static unsigned long last_timer; - - if (!is_otg_enabled(musb)) - return; - - 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); - last_timer = jiffies; - return; - } - - if (time_after(last_timer, timeout) && timer_pending(&glue->timer)) { - dev_dbg(musb->controller, - "Longer idle timer already pending, ignoring...\n"); - return; - } - last_timer = 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, 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->parent); - struct dsps_glue *glue = platform_get_drvdata(pdev); + struct dsps_glue *glue = dev_get_drvdata(dev->parent); const struct dsps_musb_wrapper *wrp = glue->wrp; unsigned long flags; irqreturn_t ret = IRQ_NONE; @@ -276,7 +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) @@ -292,8 +329,20 @@ 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) && is_host_enabled(musb)) - pr_info("CAUTION: musb: Babble Interrupt Occured\n"); + 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); @@ -301,8 +350,7 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) u8 devctl = dsps_readb(mregs, MUSB_DEVCTL); int err; - err = is_host_enabled(musb) && (musb->int_usb & - MUSB_INTR_VBUSERROR); + err = musb->int_usb & MUSB_INTR_VBUSERROR; if (err) { /* * The Mentor core doesn't debounce VBUS as needed @@ -320,8 +368,7 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) mod_timer(&glue->timer, jiffies + wrp->poll_seconds * HZ); WARNING("VBUS error workaround (delay coming)\n"); - } else if (is_host_enabled(musb) && drvvbus) { - musb->is_active = 1; + } else if (drvvbus) { MUSB_HST_MODE(musb); musb->xceiv->otg->default_a = 1; musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; @@ -336,7 +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; @@ -345,58 +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 (is_otg_enabled(musb) && musb->xceiv->state == OTG_STATE_B_IDLE) + /* 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 musb_hdrc_platform_data *plat = dev->platform_data; - struct platform_device *pdev = to_platform_device(dev->parent); - struct dsps_glue *glue = platform_get_drvdata(pdev); + 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; - struct omap_musb_board_data *data = plat->board_data; - 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_transceiver(); - if (!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; - if (is_host_enabled(musb)) - setup_timer(&glue->timer, 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. */ - if (data->set_phy_power) - data->set_phy_power(1); - musb->isr = dsps_interrupt; /* reset the otgdisable bit, needed for host mode to work */ @@ -404,38 +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_transceiver(musb->xceiv); - usb_nop_xceiv_unregister(); - return status; } static int dsps_musb_exit(struct musb *musb) { struct device *dev = musb->controller; - struct musb_hdrc_platform_data *plat = dev->platform_data; - struct omap_musb_board_data *data = plat->board_data; - struct platform_device *pdev = to_platform_device(dev->parent); - struct dsps_glue *glue = platform_get_drvdata(pdev); + struct dsps_glue *glue = dev_get_drvdata(dev->parent); + + del_timer_sync(&glue->timer); + usb_phy_shutdown(musb->xceiv); + debugfs_remove_recursive(glue->dbgfs_root); - if (is_host_enabled(musb)) - del_timer_sync(&glue->timer); + return 0; +} - /* Shutdown the on-chip PHY and its PLL. */ - if (data->set_phy_power) - data->set_phy_power(0); +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; - /* NOP driver needs change if supporting dual instance */ - usb_put_transceiver(musb->xceiv); - usb_nop_xceiv_unregister(); + 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, @@ -444,202 +553,191 @@ 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 __devinit dsps_create_musb_pdev(struct dsps_glue *glue, u8 id) +static int get_int_prop(struct device_node *dn, const char *s) +{ + 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; + + mode = of_usb_get_dr_mode(dev->of_node); + switch (mode) { + case USB_DR_MODE_HOST: + return MUSB_PORT_MODE_HOST; + + 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 device *dev = glue->dev; - struct platform_device *pdev = to_platform_device(dev); - struct musb_hdrc_platform_data *pdata = dev->platform_data; - struct platform_device *musb; - struct resource *res; + struct musb_hdrc_platform_data pdata; struct resource resources[2]; - char res_name[10]; + 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; - /* get memory resource */ - sprintf(res_name, "musb%d", id); - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, res_name); + memset(resources, 0, sizeof(resources)); + res = platform_get_resource_byname(parent, IORESOURCE_MEM, "mc"); if (!res) { - dev_err(dev, "%s get mem resource failed\n", res_name); - ret = -ENODEV; - goto err0; + dev_err(dev, "failed to get memory.\n"); + return -EINVAL; } - res->parent = NULL; resources[0] = *res; - /* get irq resource */ - sprintf(res_name, "musb%d-irq", id); - res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, res_name); + res = platform_get_resource_byname(parent, IORESOURCE_IRQ, "mc"); if (!res) { - dev_err(dev, "%s get irq resource failed\n", res_name); - ret = -ENODEV; - goto err0; + dev_err(dev, "failed to get irq.\n"); + return -EINVAL; } - strcpy((u8 *)res->name, "mc"); - res->parent = NULL; resources[1] = *res; /* allocate the child platform device */ - musb = platform_device_alloc("musb-hdrc", -1); + 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 = musb; + glue->musb = musb; - pdata->platform_ops = &dsps_ops; - - 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 err1; + goto err; } - ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); + 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.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 err1; + goto err; } ret = platform_device_add(musb); if (ret) { dev_err(dev, "failed to register musb device\n"); - goto err1; + goto err; } - return 0; -err1: +err: platform_device_put(musb); -err0: return ret; } -static void __devexit dsps_delete_musb_pdev(struct dsps_glue *glue) -{ - platform_device_del(glue->musb); - platform_device_put(glue->musb); -} - -static int __devinit dsps_probe(struct platform_device *pdev) +static int dsps_probe(struct platform_device *pdev) { - const struct platform_device_id *id = platform_get_device_id(pdev); - const struct dsps_musb_wrapper *wrp = - (struct dsps_musb_wrapper *)id->driver_data; + const struct of_device_id *match; + const struct dsps_musb_wrapper *wrp; struct dsps_glue *glue; - struct resource *iomem; int ret; + if (!strcmp(pdev->name, "musb-hdrc")) + return -ENODEV; + + 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"); + 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); - - /* create the child platform device for first instances of musb */ - ret = dsps_create_musb_pdev(glue, 0); - if (ret != 0) { - dev_err(&pdev->dev, "failed to create child pdev\n"); - goto err2; - } - - /* enable the usbss clocks */ pm_runtime_enable(&pdev->dev); ret = pm_runtime_get_sync(&pdev->dev); if (ret < 0) { dev_err(&pdev->dev, "pm_runtime_get_sync FAILED"); - goto err3; + goto err2; } + ret = dsps_create_musb_pdev(glue, pdev); + if (ret) + goto err3; + return 0; err3: - pm_runtime_disable(&pdev->dev); + pm_runtime_put(&pdev->dev); err2: - kfree(glue->wrp); -err1: - kfree(glue); -err0: + pm_runtime_disable(&pdev->dev); return ret; } -static int __devexit dsps_remove(struct platform_device *pdev) + +static int dsps_remove(struct platform_device *pdev) { struct dsps_glue *glue = platform_get_drvdata(pdev); - /* delete the child platform device */ - dsps_delete_musb_pdev(glue); + 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 musb_hdrc_platform_data *plat = dev->platform_data; - struct omap_musb_board_data *data = plat->board_data; - - /* Shutdown the on-chip PHY and its PLL. */ - if (data->set_phy_power) - data->set_phy_power(0); return 0; } -static int dsps_resume(struct device *dev) -{ - struct musb_hdrc_platform_data *plat = dev->platform_data; - struct omap_musb_board_data *data = plat->board_data; - - /* Start the on-chip PHY and its PLL. */ - if (data->set_phy_power) - data->set_phy_power(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 __devinitconst = { +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, @@ -648,9 +746,12 @@ static const struct dsps_musb_wrapper ti81xx_driver_data __devinitconst = { .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), @@ -661,36 +762,64 @@ static const struct dsps_musb_wrapper ti81xx_driver_data __devinitconst = { .rxep_shift = 16, .rxep_mask = 0xfffe, .rxep_bitmap = (0xfffe << 16), - .musb_core_offset = 0x400, .poll_seconds = 2, }; -static const struct platform_device_id musb_dsps_id_table[] __devinitconst = { - { - .name = "musb-ti81xx", - .driver_data = (kernel_ulong_t) &ti81xx_driver_data, - }, - { }, /* Terminating Entry */ -}; -MODULE_DEVICE_TABLE(platform, musb_dsps_id_table); - -static const struct of_device_id musb_dsps_of_match[] __devinitconst = { - { .compatible = "musb-ti81xx", }, - { .compatible = "ti,ti81xx-musb", }, - { .compatible = "ti,am335x-musb", }, +static const struct of_device_id musb_dsps_of_match[] = { + { .compatible = "ti,musb-am33xx", + .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 = __devexit_p(dsps_remove), + .remove = dsps_remove, .driver = { .name = "musb-dsps", .pm = &dsps_pm_ops, .of_match_table = musb_dsps_of_match, }, - .id_table = musb_dsps_id_table, }; MODULE_DESCRIPTION("TI DSPS MUSB Glue Layer"); @@ -698,14 +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); |