| /** |
| * dwc3-omap.c - OMAP Specific Glue layer |
| * |
| * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com |
| * |
| * Authors: Felipe Balbi <balbi@ti.com>, |
| * Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
| * |
| * 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. |
| * |
| * 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. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/slab.h> |
| #include <linux/irq.h> |
| #include <linux/interrupt.h> |
| #include <linux/platform_device.h> |
| #include <linux/platform_data/dwc3-omap.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/ioport.h> |
| #include <linux/io.h> |
| #include <linux/of.h> |
| #include <linux/of_platform.h> |
| #include <linux/extcon.h> |
| #include <linux/regulator/consumer.h> |
| |
| #include <linux/usb/otg.h> |
| |
| /* |
| * All these registers belong to OMAP's Wrapper around the |
| * DesignWare USB3 Core. |
| */ |
| |
| #define USBOTGSS_REVISION 0x0000 |
| #define USBOTGSS_SYSCONFIG 0x0010 |
| #define USBOTGSS_IRQ_EOI 0x0020 |
| #define USBOTGSS_EOI_OFFSET 0x0008 |
| #define USBOTGSS_IRQSTATUS_RAW_0 0x0024 |
| #define USBOTGSS_IRQSTATUS_0 0x0028 |
| #define USBOTGSS_IRQENABLE_SET_0 0x002c |
| #define USBOTGSS_IRQENABLE_CLR_0 0x0030 |
| #define USBOTGSS_IRQ0_OFFSET 0x0004 |
| #define USBOTGSS_IRQSTATUS_RAW_1 0x0030 |
| #define USBOTGSS_IRQSTATUS_1 0x0034 |
| #define USBOTGSS_IRQENABLE_SET_1 0x0038 |
| #define USBOTGSS_IRQENABLE_CLR_1 0x003c |
| #define USBOTGSS_IRQSTATUS_RAW_2 0x0040 |
| #define USBOTGSS_IRQSTATUS_2 0x0044 |
| #define USBOTGSS_IRQENABLE_SET_2 0x0048 |
| #define USBOTGSS_IRQENABLE_CLR_2 0x004c |
| #define USBOTGSS_IRQSTATUS_RAW_3 0x0050 |
| #define USBOTGSS_IRQSTATUS_3 0x0054 |
| #define USBOTGSS_IRQENABLE_SET_3 0x0058 |
| #define USBOTGSS_IRQENABLE_CLR_3 0x005c |
| #define USBOTGSS_IRQSTATUS_EOI_MISC 0x0030 |
| #define USBOTGSS_IRQSTATUS_RAW_MISC 0x0034 |
| #define USBOTGSS_IRQSTATUS_MISC 0x0038 |
| #define USBOTGSS_IRQENABLE_SET_MISC 0x003c |
| #define USBOTGSS_IRQENABLE_CLR_MISC 0x0040 |
| #define USBOTGSS_IRQMISC_OFFSET 0x03fc |
| #define USBOTGSS_UTMI_OTG_STATUS 0x0080 |
| #define USBOTGSS_UTMI_OTG_CTRL 0x0084 |
| #define USBOTGSS_UTMI_OTG_OFFSET 0x0480 |
| #define USBOTGSS_TXFIFO_DEPTH 0x0508 |
| #define USBOTGSS_RXFIFO_DEPTH 0x050c |
| #define USBOTGSS_MMRAM_OFFSET 0x0100 |
| #define USBOTGSS_FLADJ 0x0104 |
| #define USBOTGSS_DEBUG_CFG 0x0108 |
| #define USBOTGSS_DEBUG_DATA 0x010c |
| #define USBOTGSS_DEV_EBC_EN 0x0110 |
| #define USBOTGSS_DEBUG_OFFSET 0x0600 |
| |
| /* SYSCONFIG REGISTER */ |
| #define USBOTGSS_SYSCONFIG_DMADISABLE (1 << 16) |
| |
| /* IRQ_EOI REGISTER */ |
| #define USBOTGSS_IRQ_EOI_LINE_NUMBER (1 << 0) |
| |
| /* IRQS0 BITS */ |
| #define USBOTGSS_IRQO_COREIRQ_ST (1 << 0) |
| |
| /* IRQMISC BITS */ |
| #define USBOTGSS_IRQMISC_DMADISABLECLR (1 << 17) |
| #define USBOTGSS_IRQMISC_OEVT (1 << 16) |
| #define USBOTGSS_IRQMISC_DRVVBUS_RISE (1 << 13) |
| #define USBOTGSS_IRQMISC_CHRGVBUS_RISE (1 << 12) |
| #define USBOTGSS_IRQMISC_DISCHRGVBUS_RISE (1 << 11) |
| #define USBOTGSS_IRQMISC_IDPULLUP_RISE (1 << 8) |
| #define USBOTGSS_IRQMISC_DRVVBUS_FALL (1 << 5) |
| #define USBOTGSS_IRQMISC_CHRGVBUS_FALL (1 << 4) |
| #define USBOTGSS_IRQMISC_DISCHRGVBUS_FALL (1 << 3) |
| #define USBOTGSS_IRQMISC_IDPULLUP_FALL (1 << 0) |
| |
| /* UTMI_OTG_STATUS REGISTER */ |
| #define USBOTGSS_UTMI_OTG_STATUS_DRVVBUS (1 << 5) |
| #define USBOTGSS_UTMI_OTG_STATUS_CHRGVBUS (1 << 4) |
| #define USBOTGSS_UTMI_OTG_STATUS_DISCHRGVBUS (1 << 3) |
| #define USBOTGSS_UTMI_OTG_STATUS_IDPULLUP (1 << 0) |
| |
| /* UTMI_OTG_CTRL REGISTER */ |
| #define USBOTGSS_UTMI_OTG_CTRL_SW_MODE (1 << 31) |
| #define USBOTGSS_UTMI_OTG_CTRL_POWERPRESENT (1 << 9) |
| #define USBOTGSS_UTMI_OTG_CTRL_TXBITSTUFFENABLE (1 << 8) |
| #define USBOTGSS_UTMI_OTG_CTRL_IDDIG (1 << 4) |
| #define USBOTGSS_UTMI_OTG_CTRL_SESSEND (1 << 3) |
| #define USBOTGSS_UTMI_OTG_CTRL_SESSVALID (1 << 2) |
| #define USBOTGSS_UTMI_OTG_CTRL_VBUSVALID (1 << 1) |
| |
| struct dwc3_omap { |
| struct device *dev; |
| |
| int irq; |
| void __iomem *base; |
| |
| u32 utmi_otg_ctrl; |
| u32 utmi_otg_offset; |
| u32 irqmisc_offset; |
| u32 irq_eoi_offset; |
| u32 debug_offset; |
| u32 irq0_offset; |
| |
| struct extcon_dev *edev; |
| struct notifier_block vbus_nb; |
| struct notifier_block id_nb; |
| |
| struct regulator *vbus_reg; |
| }; |
| |
| enum omap_dwc3_vbus_id_status { |
| OMAP_DWC3_ID_FLOAT, |
| OMAP_DWC3_ID_GROUND, |
| OMAP_DWC3_VBUS_OFF, |
| OMAP_DWC3_VBUS_VALID, |
| }; |
| |
| static inline u32 dwc3_omap_readl(void __iomem *base, u32 offset) |
| { |
| return readl(base + offset); |
| } |
| |
| static inline void dwc3_omap_writel(void __iomem *base, u32 offset, u32 value) |
| { |
| writel(value, base + offset); |
| } |
| |
| static u32 dwc3_omap_read_utmi_ctrl(struct dwc3_omap *omap) |
| { |
| return dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_CTRL + |
| omap->utmi_otg_offset); |
| } |
| |
| static void dwc3_omap_write_utmi_ctrl(struct dwc3_omap *omap, u32 value) |
| { |
| dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_CTRL + |
| omap->utmi_otg_offset, value); |
| |
| } |
| |
| static u32 dwc3_omap_read_irq0_status(struct dwc3_omap *omap) |
| { |
| return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_RAW_0 - |
| omap->irq0_offset); |
| } |
| |
| static void dwc3_omap_write_irq0_status(struct dwc3_omap *omap, u32 value) |
| { |
| dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_0 - |
| omap->irq0_offset, value); |
| |
| } |
| |
| static u32 dwc3_omap_read_irqmisc_status(struct dwc3_omap *omap) |
| { |
| return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_RAW_MISC + |
| omap->irqmisc_offset); |
| } |
| |
| static void dwc3_omap_write_irqmisc_status(struct dwc3_omap *omap, u32 value) |
| { |
| dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_MISC + |
| omap->irqmisc_offset, value); |
| |
| } |
| |
| static void dwc3_omap_write_irqmisc_set(struct dwc3_omap *omap, u32 value) |
| { |
| dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_MISC + |
| omap->irqmisc_offset, value); |
| |
| } |
| |
| static void dwc3_omap_write_irq0_set(struct dwc3_omap *omap, u32 value) |
| { |
| dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_0 - |
| omap->irq0_offset, value); |
| } |
| |
| static void dwc3_omap_write_irqmisc_clr(struct dwc3_omap *omap, u32 value) |
| { |
| dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_CLR_MISC + |
| omap->irqmisc_offset, value); |
| } |
| |
| static void dwc3_omap_write_irq0_clr(struct dwc3_omap *omap, u32 value) |
| { |
| dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_CLR_0 - |
| omap->irq0_offset, value); |
| } |
| |
| static void dwc3_omap_set_mailbox(struct dwc3_omap *omap, |
| enum omap_dwc3_vbus_id_status status) |
| { |
| int ret; |
| u32 val; |
| |
| switch (status) { |
| case OMAP_DWC3_ID_GROUND: |
| if (omap->vbus_reg) { |
| ret = regulator_enable(omap->vbus_reg); |
| if (ret) { |
| dev_err(omap->dev, "regulator enable failed\n"); |
| return; |
| } |
| } |
| |
| val = dwc3_omap_read_utmi_ctrl(omap); |
| val &= ~USBOTGSS_UTMI_OTG_CTRL_IDDIG; |
| dwc3_omap_write_utmi_ctrl(omap, val); |
| break; |
| |
| case OMAP_DWC3_VBUS_VALID: |
| val = dwc3_omap_read_utmi_ctrl(omap); |
| val &= ~USBOTGSS_UTMI_OTG_CTRL_SESSEND; |
| val |= USBOTGSS_UTMI_OTG_CTRL_VBUSVALID |
| | USBOTGSS_UTMI_OTG_CTRL_SESSVALID; |
| dwc3_omap_write_utmi_ctrl(omap, val); |
| break; |
| |
| case OMAP_DWC3_ID_FLOAT: |
| if (omap->vbus_reg && regulator_is_enabled(omap->vbus_reg)) |
| regulator_disable(omap->vbus_reg); |
| val = dwc3_omap_read_utmi_ctrl(omap); |
| val |= USBOTGSS_UTMI_OTG_CTRL_IDDIG; |
| dwc3_omap_write_utmi_ctrl(omap, val); |
| break; |
| |
| case OMAP_DWC3_VBUS_OFF: |
| val = dwc3_omap_read_utmi_ctrl(omap); |
| val &= ~(USBOTGSS_UTMI_OTG_CTRL_SESSVALID |
| | USBOTGSS_UTMI_OTG_CTRL_VBUSVALID); |
| val |= USBOTGSS_UTMI_OTG_CTRL_SESSEND; |
| dwc3_omap_write_utmi_ctrl(omap, val); |
| break; |
| |
| default: |
| dev_WARN(omap->dev, "invalid state\n"); |
| } |
| } |
| |
| static void dwc3_omap_enable_irqs(struct dwc3_omap *omap); |
| static void dwc3_omap_disable_irqs(struct dwc3_omap *omap); |
| |
| static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap) |
| { |
| struct dwc3_omap *omap = _omap; |
| |
| if (dwc3_omap_read_irqmisc_status(omap) || |
| dwc3_omap_read_irq0_status(omap)) { |
| /* mask irqs */ |
| dwc3_omap_disable_irqs(omap); |
| return IRQ_WAKE_THREAD; |
| } |
| |
| return IRQ_NONE; |
| } |
| |
| static irqreturn_t dwc3_omap_interrupt_thread(int irq, void *_omap) |
| { |
| struct dwc3_omap *omap = _omap; |
| u32 reg; |
| |
| /* clear irq status flags */ |
| reg = dwc3_omap_read_irqmisc_status(omap); |
| dwc3_omap_write_irqmisc_status(omap, reg); |
| |
| reg = dwc3_omap_read_irq0_status(omap); |
| dwc3_omap_write_irq0_status(omap, reg); |
| |
| /* unmask irqs */ |
| dwc3_omap_enable_irqs(omap); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static void dwc3_omap_enable_irqs(struct dwc3_omap *omap) |
| { |
| u32 reg; |
| |
| /* enable all IRQs */ |
| reg = USBOTGSS_IRQO_COREIRQ_ST; |
| dwc3_omap_write_irq0_set(omap, reg); |
| |
| reg = (USBOTGSS_IRQMISC_OEVT | |
| USBOTGSS_IRQMISC_DRVVBUS_RISE | |
| USBOTGSS_IRQMISC_CHRGVBUS_RISE | |
| USBOTGSS_IRQMISC_DISCHRGVBUS_RISE | |
| USBOTGSS_IRQMISC_IDPULLUP_RISE | |
| USBOTGSS_IRQMISC_DRVVBUS_FALL | |
| USBOTGSS_IRQMISC_CHRGVBUS_FALL | |
| USBOTGSS_IRQMISC_DISCHRGVBUS_FALL | |
| USBOTGSS_IRQMISC_IDPULLUP_FALL); |
| |
| dwc3_omap_write_irqmisc_set(omap, reg); |
| } |
| |
| static void dwc3_omap_disable_irqs(struct dwc3_omap *omap) |
| { |
| u32 reg; |
| |
| /* disable all IRQs */ |
| reg = USBOTGSS_IRQO_COREIRQ_ST; |
| dwc3_omap_write_irq0_clr(omap, reg); |
| |
| reg = (USBOTGSS_IRQMISC_OEVT | |
| USBOTGSS_IRQMISC_DRVVBUS_RISE | |
| USBOTGSS_IRQMISC_CHRGVBUS_RISE | |
| USBOTGSS_IRQMISC_DISCHRGVBUS_RISE | |
| USBOTGSS_IRQMISC_IDPULLUP_RISE | |
| USBOTGSS_IRQMISC_DRVVBUS_FALL | |
| USBOTGSS_IRQMISC_CHRGVBUS_FALL | |
| USBOTGSS_IRQMISC_DISCHRGVBUS_FALL | |
| USBOTGSS_IRQMISC_IDPULLUP_FALL); |
| |
| dwc3_omap_write_irqmisc_clr(omap, reg); |
| } |
| |
| static int dwc3_omap_id_notifier(struct notifier_block *nb, |
| unsigned long event, void *ptr) |
| { |
| struct dwc3_omap *omap = container_of(nb, struct dwc3_omap, id_nb); |
| |
| if (event) |
| dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND); |
| else |
| dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_FLOAT); |
| |
| return NOTIFY_DONE; |
| } |
| |
| static int dwc3_omap_vbus_notifier(struct notifier_block *nb, |
| unsigned long event, void *ptr) |
| { |
| struct dwc3_omap *omap = container_of(nb, struct dwc3_omap, vbus_nb); |
| |
| if (event) |
| dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID); |
| else |
| dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_OFF); |
| |
| return NOTIFY_DONE; |
| } |
| |
| static void dwc3_omap_map_offset(struct dwc3_omap *omap) |
| { |
| struct device_node *node = omap->dev->of_node; |
| |
| /* |
| * Differentiate between OMAP5 and AM437x. |
| * |
| * For OMAP5(ES2.0) and AM437x wrapper revision is same, even |
| * though there are changes in wrapper register offsets. |
| * |
| * Using dt compatible to differentiate AM437x. |
| */ |
| if (of_device_is_compatible(node, "ti,am437x-dwc3")) { |
| omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET; |
| omap->irq0_offset = USBOTGSS_IRQ0_OFFSET; |
| omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET; |
| omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET; |
| omap->debug_offset = USBOTGSS_DEBUG_OFFSET; |
| } |
| } |
| |
| static void dwc3_omap_set_utmi_mode(struct dwc3_omap *omap) |
| { |
| u32 reg; |
| struct device_node *node = omap->dev->of_node; |
| int utmi_mode = 0; |
| |
| reg = dwc3_omap_read_utmi_ctrl(omap); |
| |
| of_property_read_u32(node, "utmi-mode", &utmi_mode); |
| |
| switch (utmi_mode) { |
| case DWC3_OMAP_UTMI_MODE_SW: |
| reg |= USBOTGSS_UTMI_OTG_CTRL_SW_MODE; |
| break; |
| case DWC3_OMAP_UTMI_MODE_HW: |
| reg &= ~USBOTGSS_UTMI_OTG_CTRL_SW_MODE; |
| break; |
| default: |
| dev_WARN(omap->dev, "UNKNOWN utmi mode %d\n", utmi_mode); |
| } |
| |
| dwc3_omap_write_utmi_ctrl(omap, reg); |
| } |
| |
| static int dwc3_omap_extcon_register(struct dwc3_omap *omap) |
| { |
| int ret; |
| struct device_node *node = omap->dev->of_node; |
| struct extcon_dev *edev; |
| |
| if (of_property_read_bool(node, "extcon")) { |
| edev = extcon_get_edev_by_phandle(omap->dev, 0); |
| if (IS_ERR(edev)) { |
| dev_vdbg(omap->dev, "couldn't get extcon device\n"); |
| return -EPROBE_DEFER; |
| } |
| |
| omap->vbus_nb.notifier_call = dwc3_omap_vbus_notifier; |
| ret = extcon_register_notifier(edev, EXTCON_USB, |
| &omap->vbus_nb); |
| if (ret < 0) |
| dev_vdbg(omap->dev, "failed to register notifier for USB\n"); |
| |
| omap->id_nb.notifier_call = dwc3_omap_id_notifier; |
| ret = extcon_register_notifier(edev, EXTCON_USB_HOST, |
| &omap->id_nb); |
| if (ret < 0) |
| dev_vdbg(omap->dev, "failed to register notifier for USB-HOST\n"); |
| |
| if (extcon_get_cable_state_(edev, EXTCON_USB) == true) |
| dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID); |
| if (extcon_get_cable_state_(edev, EXTCON_USB_HOST) == true) |
| dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND); |
| |
| omap->edev = edev; |
| } |
| |
| return 0; |
| } |
| |
| static int dwc3_omap_probe(struct platform_device *pdev) |
| { |
| struct device_node *node = pdev->dev.of_node; |
| |
| struct dwc3_omap *omap; |
| struct resource *res; |
| struct device *dev = &pdev->dev; |
| struct regulator *vbus_reg = NULL; |
| |
| int ret; |
| int irq; |
| |
| u32 reg; |
| |
| void __iomem *base; |
| |
| if (!node) { |
| dev_err(dev, "device node not found\n"); |
| return -EINVAL; |
| } |
| |
| omap = devm_kzalloc(dev, sizeof(*omap), GFP_KERNEL); |
| if (!omap) |
| return -ENOMEM; |
| |
| platform_set_drvdata(pdev, omap); |
| |
| irq = platform_get_irq(pdev, 0); |
| if (irq < 0) { |
| dev_err(dev, "missing IRQ resource\n"); |
| return -EINVAL; |
| } |
| |
| res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| base = devm_ioremap_resource(dev, res); |
| if (IS_ERR(base)) |
| return PTR_ERR(base); |
| |
| if (of_property_read_bool(node, "vbus-supply")) { |
| vbus_reg = devm_regulator_get(dev, "vbus"); |
| if (IS_ERR(vbus_reg)) { |
| dev_err(dev, "vbus init failed\n"); |
| return PTR_ERR(vbus_reg); |
| } |
| } |
| |
| omap->dev = dev; |
| omap->irq = irq; |
| omap->base = base; |
| omap->vbus_reg = vbus_reg; |
| |
| pm_runtime_enable(dev); |
| ret = pm_runtime_get_sync(dev); |
| if (ret < 0) { |
| dev_err(dev, "get_sync failed with err %d\n", ret); |
| goto err1; |
| } |
| |
| dwc3_omap_map_offset(omap); |
| dwc3_omap_set_utmi_mode(omap); |
| |
| /* check the DMA Status */ |
| reg = dwc3_omap_readl(omap->base, USBOTGSS_SYSCONFIG); |
| |
| ret = dwc3_omap_extcon_register(omap); |
| if (ret < 0) |
| goto err1; |
| |
| ret = of_platform_populate(node, NULL, NULL, dev); |
| if (ret) { |
| dev_err(&pdev->dev, "failed to create dwc3 core\n"); |
| goto err2; |
| } |
| |
| ret = devm_request_threaded_irq(dev, omap->irq, dwc3_omap_interrupt, |
| dwc3_omap_interrupt_thread, IRQF_SHARED, |
| "dwc3-omap", omap); |
| if (ret) { |
| dev_err(dev, "failed to request IRQ #%d --> %d\n", |
| omap->irq, ret); |
| goto err1; |
| } |
| dwc3_omap_enable_irqs(omap); |
| return 0; |
| |
| err2: |
| extcon_unregister_notifier(omap->edev, EXTCON_USB, &omap->vbus_nb); |
| extcon_unregister_notifier(omap->edev, EXTCON_USB_HOST, &omap->id_nb); |
| |
| err1: |
| pm_runtime_put_sync(dev); |
| pm_runtime_disable(dev); |
| |
| return ret; |
| } |
| |
| static int dwc3_omap_remove(struct platform_device *pdev) |
| { |
| struct dwc3_omap *omap = platform_get_drvdata(pdev); |
| |
| extcon_unregister_notifier(omap->edev, EXTCON_USB, &omap->vbus_nb); |
| extcon_unregister_notifier(omap->edev, EXTCON_USB_HOST, &omap->id_nb); |
| dwc3_omap_disable_irqs(omap); |
| disable_irq(omap->irq); |
| of_platform_depopulate(omap->dev); |
| pm_runtime_put_sync(&pdev->dev); |
| pm_runtime_disable(&pdev->dev); |
| |
| return 0; |
| } |
| |
| static const struct of_device_id of_dwc3_match[] = { |
| { |
| .compatible = "ti,dwc3" |
| }, |
| { |
| .compatible = "ti,am437x-dwc3" |
| }, |
| { }, |
| }; |
| MODULE_DEVICE_TABLE(of, of_dwc3_match); |
| |
| #ifdef CONFIG_PM_SLEEP |
| static int dwc3_omap_suspend(struct device *dev) |
| { |
| struct dwc3_omap *omap = dev_get_drvdata(dev); |
| |
| omap->utmi_otg_ctrl = dwc3_omap_read_utmi_ctrl(omap); |
| dwc3_omap_disable_irqs(omap); |
| |
| return 0; |
| } |
| |
| static int dwc3_omap_resume(struct device *dev) |
| { |
| struct dwc3_omap *omap = dev_get_drvdata(dev); |
| |
| dwc3_omap_write_utmi_ctrl(omap, omap->utmi_otg_ctrl); |
| dwc3_omap_enable_irqs(omap); |
| |
| pm_runtime_disable(dev); |
| pm_runtime_set_active(dev); |
| pm_runtime_enable(dev); |
| |
| return 0; |
| } |
| |
| static void dwc3_omap_complete(struct device *dev) |
| { |
| struct dwc3_omap *omap = dev_get_drvdata(dev); |
| |
| if (extcon_get_state(omap->edev, EXTCON_USB)) |
| dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID); |
| else |
| dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_OFF); |
| |
| if (extcon_get_state(omap->edev, EXTCON_USB_HOST)) |
| dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND); |
| else |
| dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_FLOAT); |
| } |
| |
| static const struct dev_pm_ops dwc3_omap_dev_pm_ops = { |
| |
| SET_SYSTEM_SLEEP_PM_OPS(dwc3_omap_suspend, dwc3_omap_resume) |
| .complete = dwc3_omap_complete, |
| }; |
| |
| #define DEV_PM_OPS (&dwc3_omap_dev_pm_ops) |
| #else |
| #define DEV_PM_OPS NULL |
| #endif /* CONFIG_PM_SLEEP */ |
| |
| static struct platform_driver dwc3_omap_driver = { |
| .probe = dwc3_omap_probe, |
| .remove = dwc3_omap_remove, |
| .driver = { |
| .name = "omap-dwc3", |
| .of_match_table = of_dwc3_match, |
| .pm = DEV_PM_OPS, |
| }, |
| }; |
| |
| module_platform_driver(dwc3_omap_driver); |
| |
| MODULE_ALIAS("platform:omap-dwc3"); |
| MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); |
| MODULE_LICENSE("GPL v2"); |
| MODULE_DESCRIPTION("DesignWare USB3 OMAP Glue Layer"); |