| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Felipe Balbi | 724 | 30.81% | 16 | 30.77% |
| George Cherian | 719 | 30.60% | 8 | 15.38% |
| Kishon Vijay Abraham I | 484 | 20.60% | 8 | 15.38% |
| Roger Quadros | 198 | 8.43% | 5 | 9.62% |
| Ido Shayevitz | 51 | 2.17% | 1 | 1.92% |
| Bin Liu | 41 | 1.74% | 1 | 1.92% |
| Vignesh R | 38 | 1.62% | 1 | 1.92% |
| Chanho Park | 31 | 1.32% | 1 | 1.92% |
| Chanwoo Choi | 26 | 1.11% | 2 | 3.85% |
| Grygorii Strashko | 16 | 0.68% | 1 | 1.92% |
| Axel Lin | 7 | 0.30% | 1 | 1.92% |
| Sebastian Andrzej Siewior | 5 | 0.21% | 1 | 1.92% |
| Gustavo A. R. Silva | 4 | 0.17% | 1 | 1.92% |
| Jingoo Han | 2 | 0.09% | 1 | 1.92% |
| Greg Kroah-Hartman | 2 | 0.09% | 2 | 3.85% |
| Franck Demathieu | 1 | 0.04% | 1 | 1.92% |
| Dan Carpenter | 1 | 0.04% | 1 | 1.92% |
| Total | 2350 | 52 |
// SPDX-License-Identifier: GPL-2.0 /** * 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> */ #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 BIT(16) /* IRQ_EOI REGISTER */ #define USBOTGSS_IRQ_EOI_LINE_NUMBER BIT(0) /* IRQS0 BITS */ #define USBOTGSS_IRQO_COREIRQ_ST BIT(0) /* IRQMISC BITS */ #define USBOTGSS_IRQMISC_DMADISABLECLR BIT(17) #define USBOTGSS_IRQMISC_OEVT BIT(16) #define USBOTGSS_IRQMISC_DRVVBUS_RISE BIT(13) #define USBOTGSS_IRQMISC_CHRGVBUS_RISE BIT(12) #define USBOTGSS_IRQMISC_DISCHRGVBUS_RISE BIT(11) #define USBOTGSS_IRQMISC_IDPULLUP_RISE BIT(8) #define USBOTGSS_IRQMISC_DRVVBUS_FALL BIT(5) #define USBOTGSS_IRQMISC_CHRGVBUS_FALL BIT(4) #define USBOTGSS_IRQMISC_DISCHRGVBUS_FALL BIT(3) #define USBOTGSS_IRQMISC_IDPULLUP_FALL BIT(0) /* UTMI_OTG_STATUS REGISTER */ #define USBOTGSS_UTMI_OTG_STATUS_DRVVBUS BIT(5) #define USBOTGSS_UTMI_OTG_STATUS_CHRGVBUS BIT(4) #define USBOTGSS_UTMI_OTG_STATUS_DISCHRGVBUS BIT(3) #define USBOTGSS_UTMI_OTG_STATUS_IDPULLUP BIT(0) /* UTMI_OTG_CTRL REGISTER */ #define USBOTGSS_UTMI_OTG_CTRL_SW_MODE BIT(31) #define USBOTGSS_UTMI_OTG_CTRL_POWERPRESENT BIT(9) #define USBOTGSS_UTMI_OTG_CTRL_TXBITSTUFFENABLE BIT(8) #define USBOTGSS_UTMI_OTG_CTRL_IDDIG BIT(4) #define USBOTGSS_UTMI_OTG_CTRL_SESSEND BIT(3) #define USBOTGSS_UTMI_OTG_CTRL_SESSVALID BIT(2) #define USBOTGSS_UTMI_OTG_CTRL_VBUSVALID BIT(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_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; u32 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 = devm_extcon_register_notifier(omap->dev, 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 = devm_extcon_register_notifier(omap->dev, 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_state(edev, EXTCON_USB) == true) dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID); if (extcon_get_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: %d\n", irq); return irq; } 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 err1; } 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; 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); 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");
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