diff options
Diffstat (limited to 'drivers/usb/dwc3/core.c')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 793 |
1 files changed, 637 insertions, 156 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 600d8234851..eb69eb9f06c 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -6,34 +6,17 @@ * Authors: Felipe Balbi <balbi@ti.com>, * Sebastian Andrzej Siewior <bigeasy@linutronix.de> * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The names of the above-listed copyright holders may not be used - * to endorse or promote products derived from this software without - * specific prior written permission. + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. * - * ALTERNATIVELY, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2, as published by the Free - * Software Foundation. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS - * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/module.h> @@ -48,24 +31,40 @@ #include <linux/list.h> #include <linux/delay.h> #include <linux/dma-mapping.h> +#include <linux/of.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> -#include <linux/module.h> +#include <linux/usb/of.h> +#include <linux/usb/otg.h> +#include "platform_data.h" #include "core.h" #include "gadget.h" #include "io.h" #include "debug.h" +/* -------------------------------------------------------------------------- */ + +void dwc3_set_mode(struct dwc3 *dwc, u32 mode) +{ + u32 reg; + + reg = dwc3_readl(dwc->regs, DWC3_GCTL); + reg &= ~(DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_OTG)); + reg |= DWC3_GCTL_PRTCAPDIR(mode); + dwc3_writel(dwc->regs, DWC3_GCTL, reg); +} + /** * dwc3_core_soft_reset - Issues core soft reset and PHY reset * @dwc: pointer to our context structure */ -static void dwc3_core_soft_reset(struct dwc3 *dwc) +static int dwc3_core_soft_reset(struct dwc3 *dwc) { u32 reg; + int ret; /* Before Resetting PHY, put Core in Reset */ reg = dwc3_readl(dwc->regs, DWC3_GCTL); @@ -82,6 +81,17 @@ static void dwc3_core_soft_reset(struct dwc3 *dwc) reg |= DWC3_GUSB2PHYCFG_PHYSOFTRST; dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); + usb_phy_init(dwc->usb2_phy); + usb_phy_init(dwc->usb3_phy); + ret = phy_init(dwc->usb2_generic_phy); + if (ret < 0) + return ret; + + ret = phy_init(dwc->usb3_generic_phy); + if (ret < 0) { + phy_exit(dwc->usb2_generic_phy); + return ret; + } mdelay(100); /* Clear USB3 PHY reset */ @@ -94,10 +104,14 @@ static void dwc3_core_soft_reset(struct dwc3 *dwc) reg &= ~DWC3_GUSB2PHYCFG_PHYSOFTRST; dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); + mdelay(100); + /* After PHYs are stable we can take Core out of reset state */ reg = dwc3_readl(dwc->regs, DWC3_GCTL); reg &= ~DWC3_GCTL_CORESOFTRESET; dwc3_writel(dwc->regs, DWC3_GCTL, reg); + + return 0; } /** @@ -109,23 +123,22 @@ static void dwc3_free_one_event_buffer(struct dwc3 *dwc, struct dwc3_event_buffer *evt) { dma_free_coherent(dwc->dev, evt->length, evt->buf, evt->dma); - kfree(evt); } /** - * dwc3_alloc_one_event_buffer - Allocated one event buffer structure + * dwc3_alloc_one_event_buffer - Allocates one event buffer structure * @dwc: Pointer to our controller context structure * @length: size of the event buffer * - * Returns a pointer to the allocated event buffer structure on succes + * Returns a pointer to the allocated event buffer structure on success * otherwise ERR_PTR(errno). */ -static struct dwc3_event_buffer *__devinit -dwc3_alloc_one_event_buffer(struct dwc3 *dwc, unsigned length) +static struct dwc3_event_buffer *dwc3_alloc_one_event_buffer(struct dwc3 *dwc, + unsigned length) { struct dwc3_event_buffer *evt; - evt = kzalloc(sizeof(*evt), GFP_KERNEL); + evt = devm_kzalloc(dwc->dev, sizeof(*evt), GFP_KERNEL); if (!evt) return ERR_PTR(-ENOMEM); @@ -133,10 +146,8 @@ dwc3_alloc_one_event_buffer(struct dwc3 *dwc, unsigned length) evt->length = length; evt->buf = dma_alloc_coherent(dwc->dev, length, &evt->dma, GFP_KERNEL); - if (!evt->buf) { - kfree(evt); + if (!evt->buf) return ERR_PTR(-ENOMEM); - } return evt; } @@ -150,29 +161,36 @@ static void dwc3_free_event_buffers(struct dwc3 *dwc) struct dwc3_event_buffer *evt; int i; - for (i = 0; i < DWC3_EVENT_BUFFERS_NUM; i++) { + for (i = 0; i < dwc->num_event_buffers; i++) { evt = dwc->ev_buffs[i]; - if (evt) { + if (evt) dwc3_free_one_event_buffer(dwc, evt); - dwc->ev_buffs[i] = NULL; - } } } /** * dwc3_alloc_event_buffers - Allocates @num event buffers of size @length - * @dwc: Pointer to out controller context structure - * @num: number of event buffers to allocate + * @dwc: pointer to our controller context structure * @length: size of event buffer * - * Returns 0 on success otherwise negative errno. In error the case, dwc + * Returns 0 on success otherwise negative errno. In the error case, dwc * may contain some buffers allocated but not all which were requested. */ -static int __devinit dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned num, - unsigned length) +static int dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned length) { + int num; int i; + num = DWC3_NUM_INT(dwc->hwparams.hwparams1); + dwc->num_event_buffers = num; + + dwc->ev_buffs = devm_kzalloc(dwc->dev, sizeof(*dwc->ev_buffs) * num, + GFP_KERNEL); + if (!dwc->ev_buffs) { + dev_err(dwc->dev, "can't allocate event buffers array\n"); + return -ENOMEM; + } + for (i = 0; i < num; i++) { struct dwc3_event_buffer *evt; @@ -189,27 +207,29 @@ static int __devinit dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned num, /** * dwc3_event_buffers_setup - setup our allocated event buffers - * @dwc: Pointer to out controller context structure + * @dwc: pointer to our controller context structure * * Returns 0 on success otherwise negative errno. */ -static int __devinit dwc3_event_buffers_setup(struct dwc3 *dwc) +static int dwc3_event_buffers_setup(struct dwc3 *dwc) { struct dwc3_event_buffer *evt; int n; - for (n = 0; n < DWC3_EVENT_BUFFERS_NUM; n++) { + for (n = 0; n < dwc->num_event_buffers; n++) { evt = dwc->ev_buffs[n]; dev_dbg(dwc->dev, "Event buf %p dma %08llx length %d\n", evt->buf, (unsigned long long) evt->dma, evt->length); + evt->lpos = 0; + dwc3_writel(dwc->regs, DWC3_GEVNTADRLO(n), lower_32_bits(evt->dma)); dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(n), upper_32_bits(evt->dma)); dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(n), - evt->length & 0xffff); + DWC3_GEVNTSIZ_SIZE(evt->length)); dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(n), 0); } @@ -221,16 +241,115 @@ static void dwc3_event_buffers_cleanup(struct dwc3 *dwc) struct dwc3_event_buffer *evt; int n; - for (n = 0; n < DWC3_EVENT_BUFFERS_NUM; n++) { + for (n = 0; n < dwc->num_event_buffers; n++) { evt = dwc->ev_buffs[n]; + + evt->lpos = 0; + dwc3_writel(dwc->regs, DWC3_GEVNTADRLO(n), 0); dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(n), 0); - dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(n), 0); + dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(n), DWC3_GEVNTSIZ_INTMASK + | DWC3_GEVNTSIZ_SIZE(0)); dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(n), 0); } } -static void __devinit dwc3_cache_hwparams(struct dwc3 *dwc) +static int dwc3_alloc_scratch_buffers(struct dwc3 *dwc) +{ + if (!dwc->has_hibernation) + return 0; + + if (!dwc->nr_scratch) + return 0; + + dwc->scratchbuf = kmalloc_array(dwc->nr_scratch, + DWC3_SCRATCHBUF_SIZE, GFP_KERNEL); + if (!dwc->scratchbuf) + return -ENOMEM; + + return 0; +} + +static int dwc3_setup_scratch_buffers(struct dwc3 *dwc) +{ + dma_addr_t scratch_addr; + u32 param; + int ret; + + if (!dwc->has_hibernation) + return 0; + + if (!dwc->nr_scratch) + return 0; + + /* should never fall here */ + if (!WARN_ON(dwc->scratchbuf)) + return 0; + + scratch_addr = dma_map_single(dwc->dev, dwc->scratchbuf, + dwc->nr_scratch * DWC3_SCRATCHBUF_SIZE, + DMA_BIDIRECTIONAL); + if (dma_mapping_error(dwc->dev, scratch_addr)) { + dev_err(dwc->dev, "failed to map scratch buffer\n"); + ret = -EFAULT; + goto err0; + } + + dwc->scratch_addr = scratch_addr; + + param = lower_32_bits(scratch_addr); + + ret = dwc3_send_gadget_generic_command(dwc, + DWC3_DGCMD_SET_SCRATCHPAD_ADDR_LO, param); + if (ret < 0) + goto err1; + + param = upper_32_bits(scratch_addr); + + ret = dwc3_send_gadget_generic_command(dwc, + DWC3_DGCMD_SET_SCRATCHPAD_ADDR_HI, param); + if (ret < 0) + goto err1; + + return 0; + +err1: + dma_unmap_single(dwc->dev, dwc->scratch_addr, dwc->nr_scratch * + DWC3_SCRATCHBUF_SIZE, DMA_BIDIRECTIONAL); + +err0: + return ret; +} + +static void dwc3_free_scratch_buffers(struct dwc3 *dwc) +{ + if (!dwc->has_hibernation) + return; + + if (!dwc->nr_scratch) + return; + + /* should never fall here */ + if (!WARN_ON(dwc->scratchbuf)) + return; + + dma_unmap_single(dwc->dev, dwc->scratch_addr, dwc->nr_scratch * + DWC3_SCRATCHBUF_SIZE, DMA_BIDIRECTIONAL); + kfree(dwc->scratchbuf); +} + +static void dwc3_core_num_eps(struct dwc3 *dwc) +{ + struct dwc3_hwparams *parms = &dwc->hwparams; + + dwc->num_in_eps = DWC3_NUM_IN_EPS(parms); + dwc->num_out_eps = DWC3_NUM_EPS(parms) - dwc->num_in_eps; + + dev_vdbg(dwc->dev, "found %d IN and %d OUT endpoints\n", + dwc->num_in_eps, dwc->num_out_eps); +} + +static void dwc3_cache_hwparams(struct dwc3 *dwc) { struct dwc3_hwparams *parms = &dwc->hwparams; @@ -251,9 +370,10 @@ static void __devinit dwc3_cache_hwparams(struct dwc3 *dwc) * * Returns 0 on success otherwise negative errno. */ -static int __devinit dwc3_core_init(struct dwc3 *dwc) +static int dwc3_core_init(struct dwc3 *dwc) { unsigned long timeout; + u32 hwparams4 = dwc->hwparams.hwparams4; u32 reg; int ret; @@ -266,8 +386,6 @@ static int __devinit dwc3_core_init(struct dwc3 *dwc) } dwc->revision = reg; - dwc3_core_soft_reset(dwc); - /* issue device SoftReset too */ timeout = jiffies + msecs_to_jiffies(500); dwc3_writel(dwc->regs, DWC3_DCTL, DWC3_DCTL_CSFTRST); @@ -285,26 +403,75 @@ static int __devinit dwc3_core_init(struct dwc3 *dwc) cpu_relax(); } while (true); - ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_NUM, - DWC3_EVENT_BUFFERS_SIZE); - if (ret) { - dev_err(dwc->dev, "failed to allocate event buffers\n"); - ret = -ENOMEM; - goto err1; + ret = dwc3_core_soft_reset(dwc); + if (ret) + goto err0; + + reg = dwc3_readl(dwc->regs, DWC3_GCTL); + reg &= ~DWC3_GCTL_SCALEDOWN_MASK; + reg &= ~DWC3_GCTL_DISSCRAMBLE; + + switch (DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams1)) { + case DWC3_GHWPARAMS1_EN_PWROPT_CLK: + /** + * WORKAROUND: DWC3 revisions between 2.10a and 2.50a have an + * issue which would cause xHCI compliance tests to fail. + * + * Because of that we cannot enable clock gating on such + * configurations. + * + * Refers to: + * + * STAR#9000588375: Clock Gating, SOF Issues when ref_clk-Based + * SOF/ITP Mode Used + */ + if ((dwc->dr_mode == USB_DR_MODE_HOST || + dwc->dr_mode == USB_DR_MODE_OTG) && + (dwc->revision >= DWC3_REVISION_210A && + dwc->revision <= DWC3_REVISION_250A)) + reg |= DWC3_GCTL_DSBLCLKGTNG | DWC3_GCTL_SOFITPSYNC; + else + reg &= ~DWC3_GCTL_DSBLCLKGTNG; + break; + case DWC3_GHWPARAMS1_EN_PWROPT_HIB: + /* enable hibernation here */ + dwc->nr_scratch = DWC3_GHWPARAMS4_HIBER_SCRATCHBUFS(hwparams4); + break; + default: + dev_dbg(dwc->dev, "No power optimization available\n"); } - ret = dwc3_event_buffers_setup(dwc); - if (ret) { - dev_err(dwc->dev, "failed to setup event buffers\n"); + /* + * WORKAROUND: DWC3 revisions <1.90a have a bug + * where the device can fail to connect at SuperSpeed + * and falls back to high-speed mode which causes + * the device to enter a Connect/Disconnect loop + */ + if (dwc->revision < DWC3_REVISION_190A) + reg |= DWC3_GCTL_U2RSTECN; + + dwc3_core_num_eps(dwc); + + dwc3_writel(dwc->regs, DWC3_GCTL, reg); + + ret = dwc3_alloc_scratch_buffers(dwc); + if (ret) goto err1; - } - dwc3_cache_hwparams(dwc); + ret = dwc3_setup_scratch_buffers(dwc); + if (ret) + goto err2; return 0; +err2: + dwc3_free_scratch_buffers(dwc); + err1: - dwc3_free_event_buffers(dwc); + usb_phy_shutdown(dwc->usb2_phy); + usb_phy_shutdown(dwc->usb3_phy); + phy_exit(dwc->usb2_generic_phy); + phy_exit(dwc->usb3_generic_phy); err0: return ret; @@ -312,173 +479,487 @@ err0: static void dwc3_core_exit(struct dwc3 *dwc) { - dwc3_event_buffers_cleanup(dwc); - dwc3_free_event_buffers(dwc); + dwc3_free_scratch_buffers(dwc); + usb_phy_shutdown(dwc->usb2_phy); + usb_phy_shutdown(dwc->usb3_phy); + phy_exit(dwc->usb2_generic_phy); + phy_exit(dwc->usb3_generic_phy); +} + +static int dwc3_core_get_phy(struct dwc3 *dwc) +{ + struct device *dev = dwc->dev; + struct device_node *node = dev->of_node; + int ret; + + if (node) { + dwc->usb2_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 0); + dwc->usb3_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 1); + } else { + dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); + dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3); + } + + if (IS_ERR(dwc->usb2_phy)) { + ret = PTR_ERR(dwc->usb2_phy); + if (ret == -ENXIO || ret == -ENODEV) { + dwc->usb2_phy = NULL; + } else if (ret == -EPROBE_DEFER) { + return ret; + } else { + dev_err(dev, "no usb2 phy configured\n"); + return ret; + } + } + + if (IS_ERR(dwc->usb3_phy)) { + ret = PTR_ERR(dwc->usb3_phy); + if (ret == -ENXIO || ret == -ENODEV) { + dwc->usb3_phy = NULL; + } else if (ret == -EPROBE_DEFER) { + return ret; + } else { + dev_err(dev, "no usb3 phy configured\n"); + return ret; + } + } + + dwc->usb2_generic_phy = devm_phy_get(dev, "usb2-phy"); + if (IS_ERR(dwc->usb2_generic_phy)) { + ret = PTR_ERR(dwc->usb2_generic_phy); + if (ret == -ENOSYS || ret == -ENODEV) { + dwc->usb2_generic_phy = NULL; + } else if (ret == -EPROBE_DEFER) { + return ret; + } else { + dev_err(dev, "no usb2 phy configured\n"); + return ret; + } + } + + dwc->usb3_generic_phy = devm_phy_get(dev, "usb3-phy"); + if (IS_ERR(dwc->usb3_generic_phy)) { + ret = PTR_ERR(dwc->usb3_generic_phy); + if (ret == -ENOSYS || ret == -ENODEV) { + dwc->usb3_generic_phy = NULL; + } else if (ret == -EPROBE_DEFER) { + return ret; + } else { + dev_err(dev, "no usb3 phy configured\n"); + return ret; + } + } + + return 0; +} + +static int dwc3_core_init_mode(struct dwc3 *dwc) +{ + struct device *dev = dwc->dev; + int ret; + + switch (dwc->dr_mode) { + case USB_DR_MODE_PERIPHERAL: + dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE); + ret = dwc3_gadget_init(dwc); + if (ret) { + dev_err(dev, "failed to initialize gadget\n"); + return ret; + } + break; + case USB_DR_MODE_HOST: + dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_HOST); + ret = dwc3_host_init(dwc); + if (ret) { + dev_err(dev, "failed to initialize host\n"); + return ret; + } + break; + case USB_DR_MODE_OTG: + dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_OTG); + ret = dwc3_host_init(dwc); + if (ret) { + dev_err(dev, "failed to initialize host\n"); + return ret; + } + + ret = dwc3_gadget_init(dwc); + if (ret) { + dev_err(dev, "failed to initialize gadget\n"); + return ret; + } + break; + default: + dev_err(dev, "Unsupported mode of operation %d\n", dwc->dr_mode); + return -EINVAL; + } + + return 0; +} + +static void dwc3_core_exit_mode(struct dwc3 *dwc) +{ + switch (dwc->dr_mode) { + case USB_DR_MODE_PERIPHERAL: + dwc3_gadget_exit(dwc); + break; + case USB_DR_MODE_HOST: + dwc3_host_exit(dwc); + break; + case USB_DR_MODE_OTG: + dwc3_host_exit(dwc); + dwc3_gadget_exit(dwc); + break; + default: + /* do nothing */ + break; + } } #define DWC3_ALIGN_MASK (16 - 1) -static int __devinit dwc3_probe(struct platform_device *pdev) +static int dwc3_probe(struct platform_device *pdev) { - const struct platform_device_id *id = platform_get_device_id(pdev); + struct device *dev = &pdev->dev; + struct dwc3_platform_data *pdata = dev_get_platdata(dev); + struct device_node *node = dev->of_node; struct resource *res; struct dwc3 *dwc; + + int ret; + void __iomem *regs; - unsigned int features = id->driver_data; - int ret = -ENOMEM; - int irq; void *mem; - mem = kzalloc(sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL); + mem = devm_kzalloc(dev, sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL); if (!mem) { - dev_err(&pdev->dev, "not enough memory\n"); - goto err0; + dev_err(dev, "not enough memory\n"); + return -ENOMEM; } dwc = PTR_ALIGN(mem, DWC3_ALIGN_MASK + 1); dwc->mem = mem; + dwc->dev = dev; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); if (!res) { - dev_err(&pdev->dev, "missing resource\n"); - goto err1; + dev_err(dev, "missing IRQ\n"); + return -ENODEV; } + dwc->xhci_resources[1].start = res->start; + dwc->xhci_resources[1].end = res->end; + dwc->xhci_resources[1].flags = res->flags; + dwc->xhci_resources[1].name = res->name; - res = request_mem_region(res->start, resource_size(res), - dev_name(&pdev->dev)); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { - dev_err(&pdev->dev, "can't request mem region\n"); - goto err1; + dev_err(dev, "missing memory resource\n"); + return -ENODEV; } - regs = ioremap(res->start, resource_size(res)); - if (!regs) { - dev_err(&pdev->dev, "ioremap failed\n"); - goto err2; - } + if (node) { + dwc->maximum_speed = of_usb_get_maximum_speed(node); - irq = platform_get_irq(pdev, 0); - if (irq < 0) { - dev_err(&pdev->dev, "missing IRQ\n"); - goto err3; + dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize"); + dwc->dr_mode = of_usb_get_dr_mode(node); + } else if (pdata) { + dwc->maximum_speed = pdata->maximum_speed; + + dwc->needs_fifo_resize = pdata->tx_fifo_resize; + dwc->dr_mode = pdata->dr_mode; } + /* default to superspeed if no maximum_speed passed */ + if (dwc->maximum_speed == USB_SPEED_UNKNOWN) + dwc->maximum_speed = USB_SPEED_SUPER; + + ret = dwc3_core_get_phy(dwc); + if (ret) + return ret; + + dwc->xhci_resources[0].start = res->start; + dwc->xhci_resources[0].end = dwc->xhci_resources[0].start + + DWC3_XHCI_REGS_END; + dwc->xhci_resources[0].flags = res->flags; + dwc->xhci_resources[0].name = res->name; + + res->start += DWC3_GLOBALS_REGS_START; + + /* + * Request memory region but exclude xHCI regs, + * since it will be requested by the xhci-plat driver. + */ + regs = devm_ioremap_resource(dev, res); + if (IS_ERR(regs)) + return PTR_ERR(regs); + spin_lock_init(&dwc->lock); platform_set_drvdata(pdev, dwc); dwc->regs = regs; dwc->regs_size = resource_size(res); - dwc->dev = &pdev->dev; - dwc->irq = irq; - pm_runtime_enable(&pdev->dev); - pm_runtime_get_sync(&pdev->dev); - pm_runtime_forbid(&pdev->dev); + dev->dma_mask = dev->parent->dma_mask; + dev->dma_parms = dev->parent->dma_parms; + dma_set_coherent_mask(dev, dev->parent->coherent_dma_mask); + + pm_runtime_enable(dev); + pm_runtime_get_sync(dev); + pm_runtime_forbid(dev); + + dwc3_cache_hwparams(dwc); + + ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_SIZE); + if (ret) { + dev_err(dwc->dev, "failed to allocate event buffers\n"); + ret = -ENOMEM; + goto err0; + } + + if (IS_ENABLED(CONFIG_USB_DWC3_HOST)) + dwc->dr_mode = USB_DR_MODE_HOST; + else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET)) + dwc->dr_mode = USB_DR_MODE_PERIPHERAL; + + if (dwc->dr_mode == USB_DR_MODE_UNKNOWN) + dwc->dr_mode = USB_DR_MODE_OTG; ret = dwc3_core_init(dwc); if (ret) { - dev_err(&pdev->dev, "failed to initialize core\n"); - goto err3; + dev_err(dev, "failed to initialize core\n"); + goto err0; } - if (features & DWC3_HAS_PERIPHERAL) { - ret = dwc3_gadget_init(dwc); - if (ret) { - dev_err(&pdev->dev, "failed to initialized gadget\n"); - goto err4; - } + usb_phy_set_suspend(dwc->usb2_phy, 0); + usb_phy_set_suspend(dwc->usb3_phy, 0); + ret = phy_power_on(dwc->usb2_generic_phy); + if (ret < 0) + goto err1; + + ret = phy_power_on(dwc->usb3_generic_phy); + if (ret < 0) + goto err_usb2phy_power; + + ret = dwc3_event_buffers_setup(dwc); + if (ret) { + dev_err(dwc->dev, "failed to setup event buffers\n"); + goto err_usb3phy_power; } + ret = dwc3_core_init_mode(dwc); + if (ret) + goto err2; + ret = dwc3_debugfs_init(dwc); if (ret) { - dev_err(&pdev->dev, "failed to initialize debugfs\n"); - goto err5; + dev_err(dev, "failed to initialize debugfs\n"); + goto err3; } - pm_runtime_allow(&pdev->dev); + pm_runtime_allow(dev); return 0; -err5: - if (features & DWC3_HAS_PERIPHERAL) - dwc3_gadget_exit(dwc); - -err4: - dwc3_core_exit(dwc); - err3: - iounmap(regs); + dwc3_core_exit_mode(dwc); err2: - release_mem_region(res->start, resource_size(res)); + dwc3_event_buffers_cleanup(dwc); + +err_usb3phy_power: + phy_power_off(dwc->usb3_generic_phy); + +err_usb2phy_power: + phy_power_off(dwc->usb2_generic_phy); err1: - kfree(dwc->mem); + usb_phy_set_suspend(dwc->usb2_phy, 1); + usb_phy_set_suspend(dwc->usb3_phy, 1); + dwc3_core_exit(dwc); err0: + dwc3_free_event_buffers(dwc); + return ret; } -static int __devexit dwc3_remove(struct platform_device *pdev) +static int dwc3_remove(struct platform_device *pdev) { - const struct platform_device_id *id = platform_get_device_id(pdev); struct dwc3 *dwc = platform_get_drvdata(pdev); - struct resource *res; - unsigned int features = id->driver_data; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + usb_phy_set_suspend(dwc->usb2_phy, 1); + usb_phy_set_suspend(dwc->usb3_phy, 1); + phy_power_off(dwc->usb2_generic_phy); + phy_power_off(dwc->usb3_generic_phy); - pm_runtime_put(&pdev->dev); + pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); dwc3_debugfs_exit(dwc); + dwc3_core_exit_mode(dwc); + dwc3_event_buffers_cleanup(dwc); + dwc3_free_event_buffers(dwc); + dwc3_core_exit(dwc); - if (features & DWC3_HAS_PERIPHERAL) - dwc3_gadget_exit(dwc); + return 0; +} - dwc3_core_exit(dwc); - release_mem_region(res->start, resource_size(res)); - iounmap(dwc->regs); - kfree(dwc->mem); +#ifdef CONFIG_PM_SLEEP +static int dwc3_prepare(struct device *dev) +{ + struct dwc3 *dwc = dev_get_drvdata(dev); + unsigned long flags; + + spin_lock_irqsave(&dwc->lock, flags); + + switch (dwc->dr_mode) { + case USB_DR_MODE_PERIPHERAL: + case USB_DR_MODE_OTG: + dwc3_gadget_prepare(dwc); + /* FALLTHROUGH */ + case USB_DR_MODE_HOST: + default: + dwc3_event_buffers_cleanup(dwc); + break; + } + + spin_unlock_irqrestore(&dwc->lock, flags); + + return 0; +} + +static void dwc3_complete(struct device *dev) +{ + struct dwc3 *dwc = dev_get_drvdata(dev); + unsigned long flags; + + spin_lock_irqsave(&dwc->lock, flags); + + dwc3_event_buffers_setup(dwc); + switch (dwc->dr_mode) { + case USB_DR_MODE_PERIPHERAL: + case USB_DR_MODE_OTG: + dwc3_gadget_complete(dwc); + /* FALLTHROUGH */ + case USB_DR_MODE_HOST: + default: + break; + } + + spin_unlock_irqrestore(&dwc->lock, flags); +} + +static int dwc3_suspend(struct device *dev) +{ + struct dwc3 *dwc = dev_get_drvdata(dev); + unsigned long flags; + + spin_lock_irqsave(&dwc->lock, flags); + + switch (dwc->dr_mode) { + case USB_DR_MODE_PERIPHERAL: + case USB_DR_MODE_OTG: + dwc3_gadget_suspend(dwc); + /* FALLTHROUGH */ + case USB_DR_MODE_HOST: + default: + /* do nothing */ + break; + } + + dwc->gctl = dwc3_readl(dwc->regs, DWC3_GCTL); + spin_unlock_irqrestore(&dwc->lock, flags); + + usb_phy_shutdown(dwc->usb3_phy); + usb_phy_shutdown(dwc->usb2_phy); + phy_exit(dwc->usb2_generic_phy); + phy_exit(dwc->usb3_generic_phy); + + return 0; +} + +static int dwc3_resume(struct device *dev) +{ + struct dwc3 *dwc = dev_get_drvdata(dev); + unsigned long flags; + int ret; + + usb_phy_init(dwc->usb3_phy); + usb_phy_init(dwc->usb2_phy); + ret = phy_init(dwc->usb2_generic_phy); + if (ret < 0) + return ret; + + ret = phy_init(dwc->usb3_generic_phy); + if (ret < 0) + goto err_usb2phy_init; + + spin_lock_irqsave(&dwc->lock, flags); + + dwc3_writel(dwc->regs, DWC3_GCTL, dwc->gctl); + + switch (dwc->dr_mode) { + case USB_DR_MODE_PERIPHERAL: + case USB_DR_MODE_OTG: + dwc3_gadget_resume(dwc); + /* FALLTHROUGH */ + case USB_DR_MODE_HOST: + default: + /* do nothing */ + break; + } + + spin_unlock_irqrestore(&dwc->lock, flags); + + pm_runtime_disable(dev); + pm_runtime_set_active(dev); + pm_runtime_enable(dev); return 0; + +err_usb2phy_init: + phy_exit(dwc->usb2_generic_phy); + + return ret; } -static const struct platform_device_id dwc3_id_table[] __devinitconst = { +static const struct dev_pm_ops dwc3_dev_pm_ops = { + .prepare = dwc3_prepare, + .complete = dwc3_complete, + + SET_SYSTEM_SLEEP_PM_OPS(dwc3_suspend, dwc3_resume) +}; + +#define DWC3_PM_OPS &(dwc3_dev_pm_ops) +#else +#define DWC3_PM_OPS NULL +#endif + +#ifdef CONFIG_OF +static const struct of_device_id of_dwc3_match[] = { { - .name = "dwc3-omap", - .driver_data = (DWC3_HAS_PERIPHERAL - | DWC3_HAS_XHCI - | DWC3_HAS_OTG), + .compatible = "snps,dwc3" }, { - .name = "dwc3-pci", - .driver_data = DWC3_HAS_PERIPHERAL, + .compatible = "synopsys,dwc3" }, - { }, /* Terminating Entry */ + { }, }; -MODULE_DEVICE_TABLE(platform, dwc3_id_table); +MODULE_DEVICE_TABLE(of, of_dwc3_match); +#endif static struct platform_driver dwc3_driver = { .probe = dwc3_probe, - .remove = __devexit_p(dwc3_remove), + .remove = dwc3_remove, .driver = { .name = "dwc3", + .of_match_table = of_match_ptr(of_dwc3_match), + .pm = DWC3_PM_OPS, }, - .id_table = dwc3_id_table, }; +module_platform_driver(dwc3_driver); + +MODULE_ALIAS("platform:dwc3"); MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); -MODULE_LICENSE("Dual BSD/GPL"); +MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("DesignWare USB3 DRD Controller Driver"); - -static int __devinit dwc3_init(void) -{ - return platform_driver_register(&dwc3_driver); -} -module_init(dwc3_init); - -static void __exit dwc3_exit(void) -{ - platform_driver_unregister(&dwc3_driver); -} -module_exit(dwc3_exit); |