| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Manu Gautam | 2026 | 43.40% | 1 | 2.27% |
| Lee Jones | 777 | 16.65% | 4 | 9.09% |
| Felipe Balbi | 650 | 13.92% | 3 | 6.82% |
| Sandeep Maheswaram | 610 | 13.07% | 5 | 11.36% |
| Shawn Guo | 241 | 5.16% | 3 | 6.82% |
| Johan Hovold | 133 | 2.85% | 10 | 22.73% |
| Miaoqian Lin | 72 | 1.54% | 3 | 6.82% |
| Vivek Gautam | 63 | 1.35% | 1 | 2.27% |
| Heikki Krogerus | 23 | 0.49% | 1 | 2.27% |
| Serge Semin | 18 | 0.39% | 2 | 4.55% |
| Matthias Kaehlcke | 17 | 0.36% | 1 | 2.27% |
| Sergey Shtylyov | 15 | 0.32% | 1 | 2.27% |
| Wei Yongjun | 7 | 0.15% | 1 | 2.27% |
| Wesley Cheng | 4 | 0.09% | 1 | 2.27% |
| Arnd Bergmann | 4 | 0.09% | 1 | 2.27% |
| Martin Blumenstingl | 2 | 0.04% | 1 | 2.27% |
| Neil Armstrong | 2 | 0.04% | 1 | 2.27% |
| Kefeng Wang | 1 | 0.02% | 1 | 2.27% |
| Greg Kroah-Hartman | 1 | 0.02% | 1 | 2.27% |
| He Fengqing | 1 | 0.02% | 1 | 2.27% |
| Geert Uytterhoeven | 1 | 0.02% | 1 | 2.27% |
| Total | 4668 | 44 |
// SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2018, The Linux Foundation. All rights reserved. * * Inspired by dwc3-of-simple.c */ #include <linux/acpi.h> #include <linux/io.h> #include <linux/of.h> #include <linux/clk.h> #include <linux/irq.h> #include <linux/of_clk.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/extcon.h> #include <linux/interconnect.h> #include <linux/of_platform.h> #include <linux/platform_device.h> #include <linux/phy/phy.h> #include <linux/usb/of.h> #include <linux/reset.h> #include <linux/iopoll.h> #include <linux/usb/hcd.h> #include <linux/usb.h> #include "core.h" /* USB QSCRATCH Hardware registers */ #define QSCRATCH_HS_PHY_CTRL 0x10 #define UTMI_OTG_VBUS_VALID BIT(20) #define SW_SESSVLD_SEL BIT(28) #define QSCRATCH_SS_PHY_CTRL 0x30 #define LANE0_PWR_PRESENT BIT(24) #define QSCRATCH_GENERAL_CFG 0x08 #define PIPE_UTMI_CLK_SEL BIT(0) #define PIPE3_PHYSTATUS_SW BIT(3) #define PIPE_UTMI_CLK_DIS BIT(8) #define PWR_EVNT_IRQ_STAT_REG 0x58 #define PWR_EVNT_LPM_IN_L2_MASK BIT(4) #define PWR_EVNT_LPM_OUT_L2_MASK BIT(5) #define SDM845_QSCRATCH_BASE_OFFSET 0xf8800 #define SDM845_QSCRATCH_SIZE 0x400 #define SDM845_DWC3_CORE_SIZE 0xcd00 /* Interconnect path bandwidths in MBps */ #define USB_MEMORY_AVG_HS_BW MBps_to_icc(240) #define USB_MEMORY_PEAK_HS_BW MBps_to_icc(700) #define USB_MEMORY_AVG_SS_BW MBps_to_icc(1000) #define USB_MEMORY_PEAK_SS_BW MBps_to_icc(2500) #define APPS_USB_AVG_BW 0 #define APPS_USB_PEAK_BW MBps_to_icc(40) struct dwc3_acpi_pdata { u32 qscratch_base_offset; u32 qscratch_base_size; u32 dwc3_core_base_size; int hs_phy_irq_index; int dp_hs_phy_irq_index; int dm_hs_phy_irq_index; int ss_phy_irq_index; bool is_urs; }; struct dwc3_qcom { struct device *dev; void __iomem *qscratch_base; struct platform_device *dwc3; struct platform_device *urs_usb; struct clk **clks; int num_clocks; struct reset_control *resets; int hs_phy_irq; int dp_hs_phy_irq; int dm_hs_phy_irq; int ss_phy_irq; enum usb_device_speed usb2_speed; struct extcon_dev *edev; struct extcon_dev *host_edev; struct notifier_block vbus_nb; struct notifier_block host_nb; const struct dwc3_acpi_pdata *acpi_pdata; enum usb_dr_mode mode; bool is_suspended; bool pm_suspended; struct icc_path *icc_path_ddr; struct icc_path *icc_path_apps; }; static inline void dwc3_qcom_setbits(void __iomem *base, u32 offset, u32 val) { u32 reg; reg = readl(base + offset); reg |= val; writel(reg, base + offset); /* ensure that above write is through */ readl(base + offset); } static inline void dwc3_qcom_clrbits(void __iomem *base, u32 offset, u32 val) { u32 reg; reg = readl(base + offset); reg &= ~val; writel(reg, base + offset); /* ensure that above write is through */ readl(base + offset); } static void dwc3_qcom_vbus_override_enable(struct dwc3_qcom *qcom, bool enable) { if (enable) { dwc3_qcom_setbits(qcom->qscratch_base, QSCRATCH_SS_PHY_CTRL, LANE0_PWR_PRESENT); dwc3_qcom_setbits(qcom->qscratch_base, QSCRATCH_HS_PHY_CTRL, UTMI_OTG_VBUS_VALID | SW_SESSVLD_SEL); } else { dwc3_qcom_clrbits(qcom->qscratch_base, QSCRATCH_SS_PHY_CTRL, LANE0_PWR_PRESENT); dwc3_qcom_clrbits(qcom->qscratch_base, QSCRATCH_HS_PHY_CTRL, UTMI_OTG_VBUS_VALID | SW_SESSVLD_SEL); } } static int dwc3_qcom_vbus_notifier(struct notifier_block *nb, unsigned long event, void *ptr) { struct dwc3_qcom *qcom = container_of(nb, struct dwc3_qcom, vbus_nb); /* enable vbus override for device mode */ dwc3_qcom_vbus_override_enable(qcom, event); qcom->mode = event ? USB_DR_MODE_PERIPHERAL : USB_DR_MODE_HOST; return NOTIFY_DONE; } static int dwc3_qcom_host_notifier(struct notifier_block *nb, unsigned long event, void *ptr) { struct dwc3_qcom *qcom = container_of(nb, struct dwc3_qcom, host_nb); /* disable vbus override in host mode */ dwc3_qcom_vbus_override_enable(qcom, !event); qcom->mode = event ? USB_DR_MODE_HOST : USB_DR_MODE_PERIPHERAL; return NOTIFY_DONE; } static int dwc3_qcom_register_extcon(struct dwc3_qcom *qcom) { struct device *dev = qcom->dev; struct extcon_dev *host_edev; int ret; if (!of_property_read_bool(dev->of_node, "extcon")) return 0; qcom->edev = extcon_get_edev_by_phandle(dev, 0); if (IS_ERR(qcom->edev)) return PTR_ERR(qcom->edev); qcom->vbus_nb.notifier_call = dwc3_qcom_vbus_notifier; qcom->host_edev = extcon_get_edev_by_phandle(dev, 1); if (IS_ERR(qcom->host_edev)) qcom->host_edev = NULL; ret = devm_extcon_register_notifier(dev, qcom->edev, EXTCON_USB, &qcom->vbus_nb); if (ret < 0) { dev_err(dev, "VBUS notifier register failed\n"); return ret; } if (qcom->host_edev) host_edev = qcom->host_edev; else host_edev = qcom->edev; qcom->host_nb.notifier_call = dwc3_qcom_host_notifier; ret = devm_extcon_register_notifier(dev, host_edev, EXTCON_USB_HOST, &qcom->host_nb); if (ret < 0) { dev_err(dev, "Host notifier register failed\n"); return ret; } /* Update initial VBUS override based on extcon state */ if (extcon_get_state(qcom->edev, EXTCON_USB) || !extcon_get_state(host_edev, EXTCON_USB_HOST)) dwc3_qcom_vbus_notifier(&qcom->vbus_nb, true, qcom->edev); else dwc3_qcom_vbus_notifier(&qcom->vbus_nb, false, qcom->edev); return 0; } static int dwc3_qcom_interconnect_enable(struct dwc3_qcom *qcom) { int ret; ret = icc_enable(qcom->icc_path_ddr); if (ret) return ret; ret = icc_enable(qcom->icc_path_apps); if (ret) icc_disable(qcom->icc_path_ddr); return ret; } static int dwc3_qcom_interconnect_disable(struct dwc3_qcom *qcom) { int ret; ret = icc_disable(qcom->icc_path_ddr); if (ret) return ret; ret = icc_disable(qcom->icc_path_apps); if (ret) icc_enable(qcom->icc_path_ddr); return ret; } /** * dwc3_qcom_interconnect_init() - Get interconnect path handles * and set bandwidth. * @qcom: Pointer to the concerned usb core. * */ static int dwc3_qcom_interconnect_init(struct dwc3_qcom *qcom) { enum usb_device_speed max_speed; struct device *dev = qcom->dev; int ret; if (has_acpi_companion(dev)) return 0; qcom->icc_path_ddr = of_icc_get(dev, "usb-ddr"); if (IS_ERR(qcom->icc_path_ddr)) { dev_err(dev, "failed to get usb-ddr path: %ld\n", PTR_ERR(qcom->icc_path_ddr)); return PTR_ERR(qcom->icc_path_ddr); } qcom->icc_path_apps = of_icc_get(dev, "apps-usb"); if (IS_ERR(qcom->icc_path_apps)) { dev_err(dev, "failed to get apps-usb path: %ld\n", PTR_ERR(qcom->icc_path_apps)); ret = PTR_ERR(qcom->icc_path_apps); goto put_path_ddr; } max_speed = usb_get_maximum_speed(&qcom->dwc3->dev); if (max_speed >= USB_SPEED_SUPER || max_speed == USB_SPEED_UNKNOWN) { ret = icc_set_bw(qcom->icc_path_ddr, USB_MEMORY_AVG_SS_BW, USB_MEMORY_PEAK_SS_BW); } else { ret = icc_set_bw(qcom->icc_path_ddr, USB_MEMORY_AVG_HS_BW, USB_MEMORY_PEAK_HS_BW); } if (ret) { dev_err(dev, "failed to set bandwidth for usb-ddr path: %d\n", ret); goto put_path_apps; } ret = icc_set_bw(qcom->icc_path_apps, APPS_USB_AVG_BW, APPS_USB_PEAK_BW); if (ret) { dev_err(dev, "failed to set bandwidth for apps-usb path: %d\n", ret); goto put_path_apps; } return 0; put_path_apps: icc_put(qcom->icc_path_apps); put_path_ddr: icc_put(qcom->icc_path_ddr); return ret; } /** * dwc3_qcom_interconnect_exit() - Release interconnect path handles * @qcom: Pointer to the concerned usb core. * * This function is used to release interconnect path handle. */ static void dwc3_qcom_interconnect_exit(struct dwc3_qcom *qcom) { icc_put(qcom->icc_path_ddr); icc_put(qcom->icc_path_apps); } /* Only usable in contexts where the role can not change. */ static bool dwc3_qcom_is_host(struct dwc3_qcom *qcom) { struct dwc3 *dwc = platform_get_drvdata(qcom->dwc3); return dwc->xhci; } static enum usb_device_speed dwc3_qcom_read_usb2_speed(struct dwc3_qcom *qcom) { struct dwc3 *dwc = platform_get_drvdata(qcom->dwc3); struct usb_device *udev; struct usb_hcd __maybe_unused *hcd; /* * FIXME: Fix this layering violation. */ hcd = platform_get_drvdata(dwc->xhci); /* * It is possible to query the speed of all children of * USB2.0 root hub via usb_hub_for_each_child(). DWC3 code * currently supports only 1 port per controller. So * this is sufficient. */ #ifdef CONFIG_USB udev = usb_hub_find_child(hcd->self.root_hub, 1); #else udev = NULL; #endif if (!udev) return USB_SPEED_UNKNOWN; return udev->speed; } static void dwc3_qcom_enable_wakeup_irq(int irq, unsigned int polarity) { if (!irq) return; if (polarity) irq_set_irq_type(irq, polarity); enable_irq(irq); enable_irq_wake(irq); } static void dwc3_qcom_disable_wakeup_irq(int irq) { if (!irq) return; disable_irq_wake(irq); disable_irq_nosync(irq); } static void dwc3_qcom_disable_interrupts(struct dwc3_qcom *qcom) { dwc3_qcom_disable_wakeup_irq(qcom->hs_phy_irq); if (qcom->usb2_speed == USB_SPEED_LOW) { dwc3_qcom_disable_wakeup_irq(qcom->dm_hs_phy_irq); } else if ((qcom->usb2_speed == USB_SPEED_HIGH) || (qcom->usb2_speed == USB_SPEED_FULL)) { dwc3_qcom_disable_wakeup_irq(qcom->dp_hs_phy_irq); } else { dwc3_qcom_disable_wakeup_irq(qcom->dp_hs_phy_irq); dwc3_qcom_disable_wakeup_irq(qcom->dm_hs_phy_irq); } dwc3_qcom_disable_wakeup_irq(qcom->ss_phy_irq); } static void dwc3_qcom_enable_interrupts(struct dwc3_qcom *qcom) { dwc3_qcom_enable_wakeup_irq(qcom->hs_phy_irq, 0); /* * Configure DP/DM line interrupts based on the USB2 device attached to * the root hub port. When HS/FS device is connected, configure the DP line * as falling edge to detect both disconnect and remote wakeup scenarios. When * LS device is connected, configure DM line as falling edge to detect both * disconnect and remote wakeup. When no device is connected, configure both * DP and DM lines as rising edge to detect HS/HS/LS device connect scenario. */ if (qcom->usb2_speed == USB_SPEED_LOW) { dwc3_qcom_enable_wakeup_irq(qcom->dm_hs_phy_irq, IRQ_TYPE_EDGE_FALLING); } else if ((qcom->usb2_speed == USB_SPEED_HIGH) || (qcom->usb2_speed == USB_SPEED_FULL)) { dwc3_qcom_enable_wakeup_irq(qcom->dp_hs_phy_irq, IRQ_TYPE_EDGE_FALLING); } else { dwc3_qcom_enable_wakeup_irq(qcom->dp_hs_phy_irq, IRQ_TYPE_EDGE_RISING); dwc3_qcom_enable_wakeup_irq(qcom->dm_hs_phy_irq, IRQ_TYPE_EDGE_RISING); } dwc3_qcom_enable_wakeup_irq(qcom->ss_phy_irq, 0); } static int dwc3_qcom_suspend(struct dwc3_qcom *qcom, bool wakeup) { u32 val; int i, ret; if (qcom->is_suspended) return 0; val = readl(qcom->qscratch_base + PWR_EVNT_IRQ_STAT_REG); if (!(val & PWR_EVNT_LPM_IN_L2_MASK)) dev_err(qcom->dev, "HS-PHY not in L2\n"); for (i = qcom->num_clocks - 1; i >= 0; i--) clk_disable_unprepare(qcom->clks[i]); ret = dwc3_qcom_interconnect_disable(qcom); if (ret) dev_warn(qcom->dev, "failed to disable interconnect: %d\n", ret); /* * The role is stable during suspend as role switching is done from a * freezable workqueue. */ if (dwc3_qcom_is_host(qcom) && wakeup) { qcom->usb2_speed = dwc3_qcom_read_usb2_speed(qcom); dwc3_qcom_enable_interrupts(qcom); } qcom->is_suspended = true; return 0; } static int dwc3_qcom_resume(struct dwc3_qcom *qcom, bool wakeup) { int ret; int i; if (!qcom->is_suspended) return 0; if (dwc3_qcom_is_host(qcom) && wakeup) dwc3_qcom_disable_interrupts(qcom); for (i = 0; i < qcom->num_clocks; i++) { ret = clk_prepare_enable(qcom->clks[i]); if (ret < 0) { while (--i >= 0) clk_disable_unprepare(qcom->clks[i]); return ret; } } ret = dwc3_qcom_interconnect_enable(qcom); if (ret) dev_warn(qcom->dev, "failed to enable interconnect: %d\n", ret); /* Clear existing events from PHY related to L2 in/out */ dwc3_qcom_setbits(qcom->qscratch_base, PWR_EVNT_IRQ_STAT_REG, PWR_EVNT_LPM_IN_L2_MASK | PWR_EVNT_LPM_OUT_L2_MASK); qcom->is_suspended = false; return 0; } static irqreturn_t qcom_dwc3_resume_irq(int irq, void *data) { struct dwc3_qcom *qcom = data; struct dwc3 *dwc = platform_get_drvdata(qcom->dwc3); /* If pm_suspended then let pm_resume take care of resuming h/w */ if (qcom->pm_suspended) return IRQ_HANDLED; /* * This is safe as role switching is done from a freezable workqueue * and the wakeup interrupts are disabled as part of resume. */ if (dwc3_qcom_is_host(qcom)) pm_runtime_resume(&dwc->xhci->dev); return IRQ_HANDLED; } static void dwc3_qcom_select_utmi_clk(struct dwc3_qcom *qcom) { /* Configure dwc3 to use UTMI clock as PIPE clock not present */ dwc3_qcom_setbits(qcom->qscratch_base, QSCRATCH_GENERAL_CFG, PIPE_UTMI_CLK_DIS); usleep_range(100, 1000); dwc3_qcom_setbits(qcom->qscratch_base, QSCRATCH_GENERAL_CFG, PIPE_UTMI_CLK_SEL | PIPE3_PHYSTATUS_SW); usleep_range(100, 1000); dwc3_qcom_clrbits(qcom->qscratch_base, QSCRATCH_GENERAL_CFG, PIPE_UTMI_CLK_DIS); } static int dwc3_qcom_get_irq(struct platform_device *pdev, const char *name, int num) { struct dwc3_qcom *qcom = platform_get_drvdata(pdev); struct platform_device *pdev_irq = qcom->urs_usb ? qcom->urs_usb : pdev; struct device_node *np = pdev->dev.of_node; int ret; if (np) ret = platform_get_irq_byname_optional(pdev_irq, name); else ret = platform_get_irq_optional(pdev_irq, num); return ret; } static int dwc3_qcom_setup_irq(struct platform_device *pdev) { struct dwc3_qcom *qcom = platform_get_drvdata(pdev); const struct dwc3_acpi_pdata *pdata = qcom->acpi_pdata; int irq; int ret; irq = dwc3_qcom_get_irq(pdev, "hs_phy_irq", pdata ? pdata->hs_phy_irq_index : -1); if (irq > 0) { /* Keep wakeup interrupts disabled until suspend */ irq_set_status_flags(irq, IRQ_NOAUTOEN); ret = devm_request_threaded_irq(qcom->dev, irq, NULL, qcom_dwc3_resume_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "qcom_dwc3 HS", qcom); if (ret) { dev_err(qcom->dev, "hs_phy_irq failed: %d\n", ret); return ret; } qcom->hs_phy_irq = irq; } irq = dwc3_qcom_get_irq(pdev, "dp_hs_phy_irq", pdata ? pdata->dp_hs_phy_irq_index : -1); if (irq > 0) { irq_set_status_flags(irq, IRQ_NOAUTOEN); ret = devm_request_threaded_irq(qcom->dev, irq, NULL, qcom_dwc3_resume_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "qcom_dwc3 DP_HS", qcom); if (ret) { dev_err(qcom->dev, "dp_hs_phy_irq failed: %d\n", ret); return ret; } qcom->dp_hs_phy_irq = irq; } irq = dwc3_qcom_get_irq(pdev, "dm_hs_phy_irq", pdata ? pdata->dm_hs_phy_irq_index : -1); if (irq > 0) { irq_set_status_flags(irq, IRQ_NOAUTOEN); ret = devm_request_threaded_irq(qcom->dev, irq, NULL, qcom_dwc3_resume_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "qcom_dwc3 DM_HS", qcom); if (ret) { dev_err(qcom->dev, "dm_hs_phy_irq failed: %d\n", ret); return ret; } qcom->dm_hs_phy_irq = irq; } irq = dwc3_qcom_get_irq(pdev, "ss_phy_irq", pdata ? pdata->ss_phy_irq_index : -1); if (irq > 0) { irq_set_status_flags(irq, IRQ_NOAUTOEN); ret = devm_request_threaded_irq(qcom->dev, irq, NULL, qcom_dwc3_resume_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "qcom_dwc3 SS", qcom); if (ret) { dev_err(qcom->dev, "ss_phy_irq failed: %d\n", ret); return ret; } qcom->ss_phy_irq = irq; } return 0; } static int dwc3_qcom_clk_init(struct dwc3_qcom *qcom, int count) { struct device *dev = qcom->dev; struct device_node *np = dev->of_node; int i; if (!np || !count) return 0; if (count < 0) return count; qcom->num_clocks = count; qcom->clks = devm_kcalloc(dev, qcom->num_clocks, sizeof(struct clk *), GFP_KERNEL); if (!qcom->clks) return -ENOMEM; for (i = 0; i < qcom->num_clocks; i++) { struct clk *clk; int ret; clk = of_clk_get(np, i); if (IS_ERR(clk)) { while (--i >= 0) clk_put(qcom->clks[i]); return PTR_ERR(clk); } ret = clk_prepare_enable(clk); if (ret < 0) { while (--i >= 0) { clk_disable_unprepare(qcom->clks[i]); clk_put(qcom->clks[i]); } clk_put(clk); return ret; } qcom->clks[i] = clk; } return 0; } static const struct property_entry dwc3_qcom_acpi_properties[] = { PROPERTY_ENTRY_STRING("dr_mode", "host"), {} }; static const struct software_node dwc3_qcom_swnode = { .properties = dwc3_qcom_acpi_properties, }; static int dwc3_qcom_acpi_register_core(struct platform_device *pdev) { struct dwc3_qcom *qcom = platform_get_drvdata(pdev); struct device *dev = &pdev->dev; struct resource *res, *child_res = NULL; struct platform_device *pdev_irq = qcom->urs_usb ? qcom->urs_usb : pdev; int irq; int ret; qcom->dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO); if (!qcom->dwc3) return -ENOMEM; qcom->dwc3->dev.parent = dev; qcom->dwc3->dev.type = dev->type; qcom->dwc3->dev.dma_mask = dev->dma_mask; qcom->dwc3->dev.dma_parms = dev->dma_parms; qcom->dwc3->dev.coherent_dma_mask = dev->coherent_dma_mask; child_res = kcalloc(2, sizeof(*child_res), GFP_KERNEL); if (!child_res) { platform_device_put(qcom->dwc3); return -ENOMEM; } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { dev_err(&pdev->dev, "failed to get memory resource\n"); ret = -ENODEV; goto out; } child_res[0].flags = res->flags; child_res[0].start = res->start; child_res[0].end = child_res[0].start + qcom->acpi_pdata->dwc3_core_base_size; irq = platform_get_irq(pdev_irq, 0); if (irq < 0) { ret = irq; goto out; } child_res[1].flags = IORESOURCE_IRQ; child_res[1].start = child_res[1].end = irq; ret = platform_device_add_resources(qcom->dwc3, child_res, 2); if (ret) { dev_err(&pdev->dev, "failed to add resources\n"); goto out; } ret = device_add_software_node(&qcom->dwc3->dev, &dwc3_qcom_swnode); if (ret < 0) { dev_err(&pdev->dev, "failed to add properties\n"); goto out; } ret = platform_device_add(qcom->dwc3); if (ret) { dev_err(&pdev->dev, "failed to add device\n"); device_remove_software_node(&qcom->dwc3->dev); goto out; } kfree(child_res); return 0; out: platform_device_put(qcom->dwc3); kfree(child_res); return ret; } static int dwc3_qcom_of_register_core(struct platform_device *pdev) { struct dwc3_qcom *qcom = platform_get_drvdata(pdev); struct device_node *np = pdev->dev.of_node, *dwc3_np; struct device *dev = &pdev->dev; int ret; dwc3_np = of_get_compatible_child(np, "snps,dwc3"); if (!dwc3_np) { dev_err(dev, "failed to find dwc3 core child\n"); return -ENODEV; } ret = of_platform_populate(np, NULL, NULL, dev); if (ret) { dev_err(dev, "failed to register dwc3 core - %d\n", ret); goto node_put; } qcom->dwc3 = of_find_device_by_node(dwc3_np); if (!qcom->dwc3) { ret = -ENODEV; dev_err(dev, "failed to get dwc3 platform device\n"); } node_put: of_node_put(dwc3_np); return ret; } static struct platform_device * dwc3_qcom_create_urs_usb_platdev(struct device *dev) { struct fwnode_handle *fwh; struct acpi_device *adev; char name[8]; int ret; int id; /* Figure out device id */ ret = sscanf(fwnode_get_name(dev->fwnode), "URS%d", &id); if (!ret) return NULL; /* Find the child using name */ snprintf(name, sizeof(name), "USB%d", id); fwh = fwnode_get_named_child_node(dev->fwnode, name); if (!fwh) return NULL; adev = to_acpi_device_node(fwh); if (!adev) return NULL; return acpi_create_platform_device(adev, NULL); } static int dwc3_qcom_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct device *dev = &pdev->dev; struct dwc3_qcom *qcom; struct resource *res, *parent_res = NULL; int ret, i; bool ignore_pipe_clk; bool wakeup_source; qcom = devm_kzalloc(&pdev->dev, sizeof(*qcom), GFP_KERNEL); if (!qcom) return -ENOMEM; platform_set_drvdata(pdev, qcom); qcom->dev = &pdev->dev; if (has_acpi_companion(dev)) { qcom->acpi_pdata = acpi_device_get_match_data(dev); if (!qcom->acpi_pdata) { dev_err(&pdev->dev, "no supporting ACPI device data\n"); return -EINVAL; } } qcom->resets = devm_reset_control_array_get_optional_exclusive(dev); if (IS_ERR(qcom->resets)) { ret = PTR_ERR(qcom->resets); dev_err(&pdev->dev, "failed to get resets, err=%d\n", ret); return ret; } ret = reset_control_assert(qcom->resets); if (ret) { dev_err(&pdev->dev, "failed to assert resets, err=%d\n", ret); return ret; } usleep_range(10, 1000); ret = reset_control_deassert(qcom->resets); if (ret) { dev_err(&pdev->dev, "failed to deassert resets, err=%d\n", ret); goto reset_assert; } ret = dwc3_qcom_clk_init(qcom, of_clk_get_parent_count(np)); if (ret) { dev_err(dev, "failed to get clocks\n"); goto reset_assert; } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (np) { parent_res = res; } else { parent_res = kmemdup(res, sizeof(struct resource), GFP_KERNEL); if (!parent_res) return -ENOMEM; parent_res->start = res->start + qcom->acpi_pdata->qscratch_base_offset; parent_res->end = parent_res->start + qcom->acpi_pdata->qscratch_base_size; if (qcom->acpi_pdata->is_urs) { qcom->urs_usb = dwc3_qcom_create_urs_usb_platdev(dev); if (IS_ERR_OR_NULL(qcom->urs_usb)) { dev_err(dev, "failed to create URS USB platdev\n"); if (!qcom->urs_usb) return -ENODEV; else return PTR_ERR(qcom->urs_usb); } } } qcom->qscratch_base = devm_ioremap_resource(dev, parent_res); if (IS_ERR(qcom->qscratch_base)) { ret = PTR_ERR(qcom->qscratch_base); goto clk_disable; } ret = dwc3_qcom_setup_irq(pdev); if (ret) { dev_err(dev, "failed to setup IRQs, err=%d\n", ret); goto clk_disable; } /* * Disable pipe_clk requirement if specified. Used when dwc3 * operates without SSPHY and only HS/FS/LS modes are supported. */ ignore_pipe_clk = device_property_read_bool(dev, "qcom,select-utmi-as-pipe-clk"); if (ignore_pipe_clk) dwc3_qcom_select_utmi_clk(qcom); if (np) ret = dwc3_qcom_of_register_core(pdev); else ret = dwc3_qcom_acpi_register_core(pdev); if (ret) { dev_err(dev, "failed to register DWC3 Core, err=%d\n", ret); goto depopulate; } ret = dwc3_qcom_interconnect_init(qcom); if (ret) goto depopulate; qcom->mode = usb_get_dr_mode(&qcom->dwc3->dev); /* enable vbus override for device mode */ if (qcom->mode != USB_DR_MODE_HOST) dwc3_qcom_vbus_override_enable(qcom, true); /* register extcon to override sw_vbus on Vbus change later */ ret = dwc3_qcom_register_extcon(qcom); if (ret) goto interconnect_exit; wakeup_source = of_property_read_bool(dev->of_node, "wakeup-source"); device_init_wakeup(&pdev->dev, wakeup_source); device_init_wakeup(&qcom->dwc3->dev, wakeup_source); qcom->is_suspended = false; pm_runtime_set_active(dev); pm_runtime_enable(dev); pm_runtime_forbid(dev); return 0; interconnect_exit: dwc3_qcom_interconnect_exit(qcom); depopulate: if (np) of_platform_depopulate(&pdev->dev); else platform_device_put(pdev); clk_disable: for (i = qcom->num_clocks - 1; i >= 0; i--) { clk_disable_unprepare(qcom->clks[i]); clk_put(qcom->clks[i]); } reset_assert: reset_control_assert(qcom->resets); return ret; } static int dwc3_qcom_remove(struct platform_device *pdev) { struct dwc3_qcom *qcom = platform_get_drvdata(pdev); struct device *dev = &pdev->dev; int i; device_remove_software_node(&qcom->dwc3->dev); of_platform_depopulate(dev); for (i = qcom->num_clocks - 1; i >= 0; i--) { clk_disable_unprepare(qcom->clks[i]); clk_put(qcom->clks[i]); } qcom->num_clocks = 0; dwc3_qcom_interconnect_exit(qcom); reset_control_assert(qcom->resets); pm_runtime_allow(dev); pm_runtime_disable(dev); return 0; } static int __maybe_unused dwc3_qcom_pm_suspend(struct device *dev) { struct dwc3_qcom *qcom = dev_get_drvdata(dev); bool wakeup = device_may_wakeup(dev); int ret; ret = dwc3_qcom_suspend(qcom, wakeup); if (ret) return ret; qcom->pm_suspended = true; return 0; } static int __maybe_unused dwc3_qcom_pm_resume(struct device *dev) { struct dwc3_qcom *qcom = dev_get_drvdata(dev); bool wakeup = device_may_wakeup(dev); int ret; ret = dwc3_qcom_resume(qcom, wakeup); if (ret) return ret; qcom->pm_suspended = false; return 0; } static int __maybe_unused dwc3_qcom_runtime_suspend(struct device *dev) { struct dwc3_qcom *qcom = dev_get_drvdata(dev); return dwc3_qcom_suspend(qcom, true); } static int __maybe_unused dwc3_qcom_runtime_resume(struct device *dev) { struct dwc3_qcom *qcom = dev_get_drvdata(dev); return dwc3_qcom_resume(qcom, true); } static const struct dev_pm_ops dwc3_qcom_dev_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(dwc3_qcom_pm_suspend, dwc3_qcom_pm_resume) SET_RUNTIME_PM_OPS(dwc3_qcom_runtime_suspend, dwc3_qcom_runtime_resume, NULL) }; static const struct of_device_id dwc3_qcom_of_match[] = { { .compatible = "qcom,dwc3" }, { } }; MODULE_DEVICE_TABLE(of, dwc3_qcom_of_match); #ifdef CONFIG_ACPI static const struct dwc3_acpi_pdata sdm845_acpi_pdata = { .qscratch_base_offset = SDM845_QSCRATCH_BASE_OFFSET, .qscratch_base_size = SDM845_QSCRATCH_SIZE, .dwc3_core_base_size = SDM845_DWC3_CORE_SIZE, .hs_phy_irq_index = 1, .dp_hs_phy_irq_index = 4, .dm_hs_phy_irq_index = 3, .ss_phy_irq_index = 2 }; static const struct dwc3_acpi_pdata sdm845_acpi_urs_pdata = { .qscratch_base_offset = SDM845_QSCRATCH_BASE_OFFSET, .qscratch_base_size = SDM845_QSCRATCH_SIZE, .dwc3_core_base_size = SDM845_DWC3_CORE_SIZE, .hs_phy_irq_index = 1, .dp_hs_phy_irq_index = 4, .dm_hs_phy_irq_index = 3, .ss_phy_irq_index = 2, .is_urs = true, }; static const struct acpi_device_id dwc3_qcom_acpi_match[] = { { "QCOM2430", (unsigned long)&sdm845_acpi_pdata }, { "QCOM0304", (unsigned long)&sdm845_acpi_urs_pdata }, { "QCOM0497", (unsigned long)&sdm845_acpi_urs_pdata }, { "QCOM04A6", (unsigned long)&sdm845_acpi_pdata }, { }, }; MODULE_DEVICE_TABLE(acpi, dwc3_qcom_acpi_match); #endif static struct platform_driver dwc3_qcom_driver = { .probe = dwc3_qcom_probe, .remove = dwc3_qcom_remove, .driver = { .name = "dwc3-qcom", .pm = &dwc3_qcom_dev_pm_ops, .of_match_table = dwc3_qcom_of_match, .acpi_match_table = ACPI_PTR(dwc3_qcom_acpi_match), }, }; module_platform_driver(dwc3_qcom_driver); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("DesignWare DWC3 QCOM Glue Driver");
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