| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Yoshihiro Shimoda | 3049 | 90.31% | 31 | 77.50% |
| Biju Das | 302 | 8.95% | 2 | 5.00% |
| Wang Li | 8 | 0.24% | 1 | 2.50% |
| Simon Horman | 6 | 0.18% | 1 | 2.50% |
| Chanwoo Choi | 5 | 0.15% | 2 | 5.00% |
| Chunfeng Yun | 3 | 0.09% | 1 | 2.50% |
| Wolfram Sang | 2 | 0.06% | 1 | 2.50% |
| Bhumika Goyal | 1 | 0.03% | 1 | 2.50% |
| Total | 3376 | 40 |
// SPDX-License-Identifier: GPL-2.0 /* * Renesas R-Car Gen3 for USB2.0 PHY driver * * Copyright (C) 2015-2017 Renesas Electronics Corporation * * This is based on the phy-rcar-gen2 driver: * Copyright (C) 2014 Renesas Solutions Corp. * Copyright (C) 2014 Cogent Embedded, Inc. */ #include <linux/extcon-provider.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/of_device.h> #include <linux/phy/phy.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/regulator/consumer.h> #include <linux/string.h> #include <linux/usb/of.h> #include <linux/workqueue.h> /******* USB2.0 Host registers (original offset is +0x200) *******/ #define USB2_INT_ENABLE 0x000 #define USB2_USBCTR 0x00c #define USB2_SPD_RSM_TIMSET 0x10c #define USB2_OC_TIMSET 0x110 #define USB2_COMMCTRL 0x600 #define USB2_OBINTSTA 0x604 #define USB2_OBINTEN 0x608 #define USB2_VBCTRL 0x60c #define USB2_LINECTRL1 0x610 #define USB2_ADPCTRL 0x630 /* INT_ENABLE */ #define USB2_INT_ENABLE_UCOM_INTEN BIT(3) #define USB2_INT_ENABLE_USBH_INTB_EN BIT(2) /* For EHCI */ #define USB2_INT_ENABLE_USBH_INTA_EN BIT(1) /* For OHCI */ /* USBCTR */ #define USB2_USBCTR_DIRPD BIT(2) #define USB2_USBCTR_PLL_RST BIT(1) /* SPD_RSM_TIMSET */ #define USB2_SPD_RSM_TIMSET_INIT 0x014e029b /* OC_TIMSET */ #define USB2_OC_TIMSET_INIT 0x000209ab /* COMMCTRL */ #define USB2_COMMCTRL_OTG_PERI BIT(31) /* 1 = Peripheral mode */ /* OBINTSTA and OBINTEN */ #define USB2_OBINT_SESSVLDCHG BIT(12) #define USB2_OBINT_IDDIGCHG BIT(11) #define USB2_OBINT_BITS (USB2_OBINT_SESSVLDCHG | \ USB2_OBINT_IDDIGCHG) /* VBCTRL */ #define USB2_VBCTRL_OCCLREN BIT(16) #define USB2_VBCTRL_DRVVBUSSEL BIT(8) #define USB2_VBCTRL_VBOUT BIT(0) /* LINECTRL1 */ #define USB2_LINECTRL1_DPRPD_EN BIT(19) #define USB2_LINECTRL1_DP_RPD BIT(18) #define USB2_LINECTRL1_DMRPD_EN BIT(17) #define USB2_LINECTRL1_DM_RPD BIT(16) #define USB2_LINECTRL1_OPMODE_NODRV BIT(6) /* ADPCTRL */ #define USB2_ADPCTRL_OTGSESSVLD BIT(20) #define USB2_ADPCTRL_IDDIG BIT(19) #define USB2_ADPCTRL_IDPULLUP BIT(5) /* 1 = ID sampling is enabled */ #define USB2_ADPCTRL_DRVVBUS BIT(4) /* RZ/G2L specific */ #define USB2_OBINT_IDCHG_EN BIT(0) #define USB2_LINECTRL1_USB2_IDMON BIT(0) #define NUM_OF_PHYS 4 enum rcar_gen3_phy_index { PHY_INDEX_BOTH_HC, PHY_INDEX_OHCI, PHY_INDEX_EHCI, PHY_INDEX_HSUSB }; static const u32 rcar_gen3_int_enable[NUM_OF_PHYS] = { USB2_INT_ENABLE_USBH_INTB_EN | USB2_INT_ENABLE_USBH_INTA_EN, USB2_INT_ENABLE_USBH_INTA_EN, USB2_INT_ENABLE_USBH_INTB_EN, 0 }; struct rcar_gen3_phy { struct phy *phy; struct rcar_gen3_chan *ch; u32 int_enable_bits; bool initialized; bool otg_initialized; bool powered; }; struct rcar_gen3_chan { void __iomem *base; struct device *dev; /* platform_device's device */ struct extcon_dev *extcon; struct rcar_gen3_phy rphys[NUM_OF_PHYS]; struct regulator *vbus; struct work_struct work; struct mutex lock; /* protects rphys[...].powered */ enum usb_dr_mode dr_mode; int irq; u32 obint_enable_bits; bool extcon_host; bool is_otg_channel; bool uses_otg_pins; bool soc_no_adp_ctrl; }; struct rcar_gen3_phy_drv_data { const struct phy_ops *phy_usb2_ops; bool no_adp_ctrl; }; /* * Combination about is_otg_channel and uses_otg_pins: * * Parameters || Behaviors * is_otg_channel | uses_otg_pins || irqs | role sysfs * ---------------------+---------------++--------------+------------ * true | true || enabled | enabled * true | false || disabled | enabled * false | any || disabled | disabled */ static void rcar_gen3_phy_usb2_work(struct work_struct *work) { struct rcar_gen3_chan *ch = container_of(work, struct rcar_gen3_chan, work); if (ch->extcon_host) { extcon_set_state_sync(ch->extcon, EXTCON_USB_HOST, true); extcon_set_state_sync(ch->extcon, EXTCON_USB, false); } else { extcon_set_state_sync(ch->extcon, EXTCON_USB_HOST, false); extcon_set_state_sync(ch->extcon, EXTCON_USB, true); } } static void rcar_gen3_set_host_mode(struct rcar_gen3_chan *ch, int host) { void __iomem *usb2_base = ch->base; u32 val = readl(usb2_base + USB2_COMMCTRL); dev_vdbg(ch->dev, "%s: %08x, %d\n", __func__, val, host); if (host) val &= ~USB2_COMMCTRL_OTG_PERI; else val |= USB2_COMMCTRL_OTG_PERI; writel(val, usb2_base + USB2_COMMCTRL); } static void rcar_gen3_set_linectrl(struct rcar_gen3_chan *ch, int dp, int dm) { void __iomem *usb2_base = ch->base; u32 val = readl(usb2_base + USB2_LINECTRL1); dev_vdbg(ch->dev, "%s: %08x, %d, %d\n", __func__, val, dp, dm); val &= ~(USB2_LINECTRL1_DP_RPD | USB2_LINECTRL1_DM_RPD); if (dp) val |= USB2_LINECTRL1_DP_RPD; if (dm) val |= USB2_LINECTRL1_DM_RPD; writel(val, usb2_base + USB2_LINECTRL1); } static void rcar_gen3_enable_vbus_ctrl(struct rcar_gen3_chan *ch, int vbus) { void __iomem *usb2_base = ch->base; u32 vbus_ctrl_reg = USB2_ADPCTRL; u32 vbus_ctrl_val = USB2_ADPCTRL_DRVVBUS; u32 val; dev_vdbg(ch->dev, "%s: %08x, %d\n", __func__, val, vbus); if (ch->soc_no_adp_ctrl) { vbus_ctrl_reg = USB2_VBCTRL; vbus_ctrl_val = USB2_VBCTRL_VBOUT; } val = readl(usb2_base + vbus_ctrl_reg); if (vbus) val |= vbus_ctrl_val; else val &= ~vbus_ctrl_val; writel(val, usb2_base + vbus_ctrl_reg); } static void rcar_gen3_control_otg_irq(struct rcar_gen3_chan *ch, int enable) { void __iomem *usb2_base = ch->base; u32 val = readl(usb2_base + USB2_OBINTEN); if (ch->uses_otg_pins && enable) val |= ch->obint_enable_bits; else val &= ~ch->obint_enable_bits; writel(val, usb2_base + USB2_OBINTEN); } static void rcar_gen3_init_for_host(struct rcar_gen3_chan *ch) { rcar_gen3_set_linectrl(ch, 1, 1); rcar_gen3_set_host_mode(ch, 1); rcar_gen3_enable_vbus_ctrl(ch, 1); ch->extcon_host = true; schedule_work(&ch->work); } static void rcar_gen3_init_for_peri(struct rcar_gen3_chan *ch) { rcar_gen3_set_linectrl(ch, 0, 1); rcar_gen3_set_host_mode(ch, 0); rcar_gen3_enable_vbus_ctrl(ch, 0); ch->extcon_host = false; schedule_work(&ch->work); } static void rcar_gen3_init_for_b_host(struct rcar_gen3_chan *ch) { void __iomem *usb2_base = ch->base; u32 val; val = readl(usb2_base + USB2_LINECTRL1); writel(val | USB2_LINECTRL1_OPMODE_NODRV, usb2_base + USB2_LINECTRL1); rcar_gen3_set_linectrl(ch, 1, 1); rcar_gen3_set_host_mode(ch, 1); rcar_gen3_enable_vbus_ctrl(ch, 0); val = readl(usb2_base + USB2_LINECTRL1); writel(val & ~USB2_LINECTRL1_OPMODE_NODRV, usb2_base + USB2_LINECTRL1); } static void rcar_gen3_init_for_a_peri(struct rcar_gen3_chan *ch) { rcar_gen3_set_linectrl(ch, 0, 1); rcar_gen3_set_host_mode(ch, 0); rcar_gen3_enable_vbus_ctrl(ch, 1); } static void rcar_gen3_init_from_a_peri_to_a_host(struct rcar_gen3_chan *ch) { rcar_gen3_control_otg_irq(ch, 0); rcar_gen3_enable_vbus_ctrl(ch, 1); rcar_gen3_init_for_host(ch); rcar_gen3_control_otg_irq(ch, 1); } static bool rcar_gen3_check_id(struct rcar_gen3_chan *ch) { if (!ch->uses_otg_pins) return (ch->dr_mode == USB_DR_MODE_HOST) ? false : true; if (ch->soc_no_adp_ctrl) return !!(readl(ch->base + USB2_LINECTRL1) & USB2_LINECTRL1_USB2_IDMON); return !!(readl(ch->base + USB2_ADPCTRL) & USB2_ADPCTRL_IDDIG); } static void rcar_gen3_device_recognition(struct rcar_gen3_chan *ch) { if (!rcar_gen3_check_id(ch)) rcar_gen3_init_for_host(ch); else rcar_gen3_init_for_peri(ch); } static bool rcar_gen3_is_host(struct rcar_gen3_chan *ch) { return !(readl(ch->base + USB2_COMMCTRL) & USB2_COMMCTRL_OTG_PERI); } static enum phy_mode rcar_gen3_get_phy_mode(struct rcar_gen3_chan *ch) { if (rcar_gen3_is_host(ch)) return PHY_MODE_USB_HOST; return PHY_MODE_USB_DEVICE; } static bool rcar_gen3_is_any_rphy_initialized(struct rcar_gen3_chan *ch) { int i; for (i = 0; i < NUM_OF_PHYS; i++) { if (ch->rphys[i].initialized) return true; } return false; } static bool rcar_gen3_needs_init_otg(struct rcar_gen3_chan *ch) { int i; for (i = 0; i < NUM_OF_PHYS; i++) { if (ch->rphys[i].otg_initialized) return false; } return true; } static bool rcar_gen3_are_all_rphys_power_off(struct rcar_gen3_chan *ch) { int i; for (i = 0; i < NUM_OF_PHYS; i++) { if (ch->rphys[i].powered) return false; } return true; } static ssize_t role_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct rcar_gen3_chan *ch = dev_get_drvdata(dev); bool is_b_device; enum phy_mode cur_mode, new_mode; if (!ch->is_otg_channel || !rcar_gen3_is_any_rphy_initialized(ch)) return -EIO; if (sysfs_streq(buf, "host")) new_mode = PHY_MODE_USB_HOST; else if (sysfs_streq(buf, "peripheral")) new_mode = PHY_MODE_USB_DEVICE; else return -EINVAL; /* is_b_device: true is B-Device. false is A-Device. */ is_b_device = rcar_gen3_check_id(ch); cur_mode = rcar_gen3_get_phy_mode(ch); /* If current and new mode is the same, this returns the error */ if (cur_mode == new_mode) return -EINVAL; if (new_mode == PHY_MODE_USB_HOST) { /* And is_host must be false */ if (!is_b_device) /* A-Peripheral */ rcar_gen3_init_from_a_peri_to_a_host(ch); else /* B-Peripheral */ rcar_gen3_init_for_b_host(ch); } else { /* And is_host must be true */ if (!is_b_device) /* A-Host */ rcar_gen3_init_for_a_peri(ch); else /* B-Host */ rcar_gen3_init_for_peri(ch); } return count; } static ssize_t role_show(struct device *dev, struct device_attribute *attr, char *buf) { struct rcar_gen3_chan *ch = dev_get_drvdata(dev); if (!ch->is_otg_channel || !rcar_gen3_is_any_rphy_initialized(ch)) return -EIO; return sprintf(buf, "%s\n", rcar_gen3_is_host(ch) ? "host" : "peripheral"); } static DEVICE_ATTR_RW(role); static void rcar_gen3_init_otg(struct rcar_gen3_chan *ch) { void __iomem *usb2_base = ch->base; u32 val; /* Should not use functions of read-modify-write a register */ val = readl(usb2_base + USB2_LINECTRL1); val = (val & ~USB2_LINECTRL1_DP_RPD) | USB2_LINECTRL1_DPRPD_EN | USB2_LINECTRL1_DMRPD_EN | USB2_LINECTRL1_DM_RPD; writel(val, usb2_base + USB2_LINECTRL1); if (!ch->soc_no_adp_ctrl) { val = readl(usb2_base + USB2_VBCTRL); val &= ~USB2_VBCTRL_OCCLREN; writel(val | USB2_VBCTRL_DRVVBUSSEL, usb2_base + USB2_VBCTRL); val = readl(usb2_base + USB2_ADPCTRL); writel(val | USB2_ADPCTRL_IDPULLUP, usb2_base + USB2_ADPCTRL); } msleep(20); writel(0xffffffff, usb2_base + USB2_OBINTSTA); writel(ch->obint_enable_bits, usb2_base + USB2_OBINTEN); rcar_gen3_device_recognition(ch); } static irqreturn_t rcar_gen3_phy_usb2_irq(int irq, void *_ch) { struct rcar_gen3_chan *ch = _ch; void __iomem *usb2_base = ch->base; u32 status = readl(usb2_base + USB2_OBINTSTA); irqreturn_t ret = IRQ_NONE; if (status & ch->obint_enable_bits) { dev_vdbg(ch->dev, "%s: %08x\n", __func__, status); writel(ch->obint_enable_bits, usb2_base + USB2_OBINTSTA); rcar_gen3_device_recognition(ch); ret = IRQ_HANDLED; } return ret; } static int rcar_gen3_phy_usb2_init(struct phy *p) { struct rcar_gen3_phy *rphy = phy_get_drvdata(p); struct rcar_gen3_chan *channel = rphy->ch; void __iomem *usb2_base = channel->base; u32 val; int ret; if (!rcar_gen3_is_any_rphy_initialized(channel) && channel->irq >= 0) { INIT_WORK(&channel->work, rcar_gen3_phy_usb2_work); ret = request_irq(channel->irq, rcar_gen3_phy_usb2_irq, IRQF_SHARED, dev_name(channel->dev), channel); if (ret < 0) { dev_err(channel->dev, "No irq handler (%d)\n", channel->irq); return ret; } } /* Initialize USB2 part */ val = readl(usb2_base + USB2_INT_ENABLE); val |= USB2_INT_ENABLE_UCOM_INTEN | rphy->int_enable_bits; writel(val, usb2_base + USB2_INT_ENABLE); writel(USB2_SPD_RSM_TIMSET_INIT, usb2_base + USB2_SPD_RSM_TIMSET); writel(USB2_OC_TIMSET_INIT, usb2_base + USB2_OC_TIMSET); /* Initialize otg part */ if (channel->is_otg_channel) { if (rcar_gen3_needs_init_otg(channel)) rcar_gen3_init_otg(channel); rphy->otg_initialized = true; } rphy->initialized = true; return 0; } static int rcar_gen3_phy_usb2_exit(struct phy *p) { struct rcar_gen3_phy *rphy = phy_get_drvdata(p); struct rcar_gen3_chan *channel = rphy->ch; void __iomem *usb2_base = channel->base; u32 val; rphy->initialized = false; if (channel->is_otg_channel) rphy->otg_initialized = false; val = readl(usb2_base + USB2_INT_ENABLE); val &= ~rphy->int_enable_bits; if (!rcar_gen3_is_any_rphy_initialized(channel)) val &= ~USB2_INT_ENABLE_UCOM_INTEN; writel(val, usb2_base + USB2_INT_ENABLE); if (channel->irq >= 0 && !rcar_gen3_is_any_rphy_initialized(channel)) free_irq(channel->irq, channel); return 0; } static int rcar_gen3_phy_usb2_power_on(struct phy *p) { struct rcar_gen3_phy *rphy = phy_get_drvdata(p); struct rcar_gen3_chan *channel = rphy->ch; void __iomem *usb2_base = channel->base; u32 val; int ret = 0; mutex_lock(&channel->lock); if (!rcar_gen3_are_all_rphys_power_off(channel)) goto out; if (channel->vbus) { ret = regulator_enable(channel->vbus); if (ret) goto out; } val = readl(usb2_base + USB2_USBCTR); val |= USB2_USBCTR_PLL_RST; writel(val, usb2_base + USB2_USBCTR); val &= ~USB2_USBCTR_PLL_RST; writel(val, usb2_base + USB2_USBCTR); out: /* The powered flag should be set for any other phys anyway */ rphy->powered = true; mutex_unlock(&channel->lock); return 0; } static int rcar_gen3_phy_usb2_power_off(struct phy *p) { struct rcar_gen3_phy *rphy = phy_get_drvdata(p); struct rcar_gen3_chan *channel = rphy->ch; int ret = 0; mutex_lock(&channel->lock); rphy->powered = false; if (!rcar_gen3_are_all_rphys_power_off(channel)) goto out; if (channel->vbus) ret = regulator_disable(channel->vbus); out: mutex_unlock(&channel->lock); return ret; } static const struct phy_ops rcar_gen3_phy_usb2_ops = { .init = rcar_gen3_phy_usb2_init, .exit = rcar_gen3_phy_usb2_exit, .power_on = rcar_gen3_phy_usb2_power_on, .power_off = rcar_gen3_phy_usb2_power_off, .owner = THIS_MODULE, }; static const struct phy_ops rz_g1c_phy_usb2_ops = { .init = rcar_gen3_phy_usb2_init, .exit = rcar_gen3_phy_usb2_exit, .owner = THIS_MODULE, }; static const struct rcar_gen3_phy_drv_data rcar_gen3_phy_usb2_data = { .phy_usb2_ops = &rcar_gen3_phy_usb2_ops, .no_adp_ctrl = false, }; static const struct rcar_gen3_phy_drv_data rz_g1c_phy_usb2_data = { .phy_usb2_ops = &rz_g1c_phy_usb2_ops, .no_adp_ctrl = false, }; static const struct rcar_gen3_phy_drv_data rz_g2l_phy_usb2_data = { .phy_usb2_ops = &rcar_gen3_phy_usb2_ops, .no_adp_ctrl = true, }; static const struct of_device_id rcar_gen3_phy_usb2_match_table[] = { { .compatible = "renesas,usb2-phy-r8a77470", .data = &rz_g1c_phy_usb2_data, }, { .compatible = "renesas,usb2-phy-r8a7795", .data = &rcar_gen3_phy_usb2_data, }, { .compatible = "renesas,usb2-phy-r8a7796", .data = &rcar_gen3_phy_usb2_data, }, { .compatible = "renesas,usb2-phy-r8a77965", .data = &rcar_gen3_phy_usb2_data, }, { .compatible = "renesas,rzg2l-usb2-phy", .data = &rz_g2l_phy_usb2_data, }, { .compatible = "renesas,rcar-gen3-usb2-phy", .data = &rcar_gen3_phy_usb2_data, }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, rcar_gen3_phy_usb2_match_table); static const unsigned int rcar_gen3_phy_cable[] = { EXTCON_USB, EXTCON_USB_HOST, EXTCON_NONE, }; static struct phy *rcar_gen3_phy_usb2_xlate(struct device *dev, struct of_phandle_args *args) { struct rcar_gen3_chan *ch = dev_get_drvdata(dev); if (args->args_count == 0) /* For old version dts */ return ch->rphys[PHY_INDEX_BOTH_HC].phy; else if (args->args_count > 1) /* Prevent invalid args count */ return ERR_PTR(-ENODEV); if (args->args[0] >= NUM_OF_PHYS) return ERR_PTR(-ENODEV); return ch->rphys[args->args[0]].phy; } static enum usb_dr_mode rcar_gen3_get_dr_mode(struct device_node *np) { enum usb_dr_mode candidate = USB_DR_MODE_UNKNOWN; int i; /* * If one of device nodes has other dr_mode except UNKNOWN, * this function returns UNKNOWN. To achieve backward compatibility, * this loop starts the index as 0. */ for (i = 0; i < NUM_OF_PHYS; i++) { enum usb_dr_mode mode = of_usb_get_dr_mode_by_phy(np, i); if (mode != USB_DR_MODE_UNKNOWN) { if (candidate == USB_DR_MODE_UNKNOWN) candidate = mode; else if (candidate != mode) return USB_DR_MODE_UNKNOWN; } } return candidate; } static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev) { const struct rcar_gen3_phy_drv_data *phy_data; struct device *dev = &pdev->dev; struct rcar_gen3_chan *channel; struct phy_provider *provider; int ret = 0, i; if (!dev->of_node) { dev_err(dev, "This driver needs device tree\n"); return -EINVAL; } channel = devm_kzalloc(dev, sizeof(*channel), GFP_KERNEL); if (!channel) return -ENOMEM; channel->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(channel->base)) return PTR_ERR(channel->base); channel->obint_enable_bits = USB2_OBINT_BITS; /* get irq number here and request_irq for OTG in phy_init */ channel->irq = platform_get_irq_optional(pdev, 0); channel->dr_mode = rcar_gen3_get_dr_mode(dev->of_node); if (channel->dr_mode != USB_DR_MODE_UNKNOWN) { int ret; channel->is_otg_channel = true; channel->uses_otg_pins = !of_property_read_bool(dev->of_node, "renesas,no-otg-pins"); channel->extcon = devm_extcon_dev_allocate(dev, rcar_gen3_phy_cable); if (IS_ERR(channel->extcon)) return PTR_ERR(channel->extcon); ret = devm_extcon_dev_register(dev, channel->extcon); if (ret < 0) { dev_err(dev, "Failed to register extcon\n"); return ret; } } /* * devm_phy_create() will call pm_runtime_enable(&phy->dev); * And then, phy-core will manage runtime pm for this device. */ pm_runtime_enable(dev); phy_data = of_device_get_match_data(dev); if (!phy_data) { ret = -EINVAL; goto error; } channel->soc_no_adp_ctrl = phy_data->no_adp_ctrl; if (phy_data->no_adp_ctrl) channel->obint_enable_bits = USB2_OBINT_IDCHG_EN; mutex_init(&channel->lock); for (i = 0; i < NUM_OF_PHYS; i++) { channel->rphys[i].phy = devm_phy_create(dev, NULL, phy_data->phy_usb2_ops); if (IS_ERR(channel->rphys[i].phy)) { dev_err(dev, "Failed to create USB2 PHY\n"); ret = PTR_ERR(channel->rphys[i].phy); goto error; } channel->rphys[i].ch = channel; channel->rphys[i].int_enable_bits = rcar_gen3_int_enable[i]; phy_set_drvdata(channel->rphys[i].phy, &channel->rphys[i]); } channel->vbus = devm_regulator_get_optional(dev, "vbus"); if (IS_ERR(channel->vbus)) { if (PTR_ERR(channel->vbus) == -EPROBE_DEFER) { ret = PTR_ERR(channel->vbus); goto error; } channel->vbus = NULL; } platform_set_drvdata(pdev, channel); channel->dev = dev; provider = devm_of_phy_provider_register(dev, rcar_gen3_phy_usb2_xlate); if (IS_ERR(provider)) { dev_err(dev, "Failed to register PHY provider\n"); ret = PTR_ERR(provider); goto error; } else if (channel->is_otg_channel) { int ret; ret = device_create_file(dev, &dev_attr_role); if (ret < 0) goto error; } return 0; error: pm_runtime_disable(dev); return ret; } static int rcar_gen3_phy_usb2_remove(struct platform_device *pdev) { struct rcar_gen3_chan *channel = platform_get_drvdata(pdev); if (channel->is_otg_channel) device_remove_file(&pdev->dev, &dev_attr_role); pm_runtime_disable(&pdev->dev); return 0; }; static struct platform_driver rcar_gen3_phy_usb2_driver = { .driver = { .name = "phy_rcar_gen3_usb2", .of_match_table = rcar_gen3_phy_usb2_match_table, }, .probe = rcar_gen3_phy_usb2_probe, .remove = rcar_gen3_phy_usb2_remove, }; module_platform_driver(rcar_gen3_phy_usb2_driver); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("Renesas R-Car Gen3 USB 2.0 PHY"); MODULE_AUTHOR("Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>");
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