diff options
Diffstat (limited to 'drivers/usb/dwc3/dwc3-omap.c')
| -rw-r--r-- | drivers/usb/dwc3/dwc3-omap.c | 152 |
1 files changed, 93 insertions, 59 deletions
diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index f31867fd2574..22f337f57219 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -43,10 +43,13 @@ #include <linux/spinlock.h> #include <linux/platform_device.h> #include <linux/platform_data/dwc3-omap.h> +#include <linux/usb/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/usb/otg.h> #include <linux/usb/nop-usb-xceiv.h> @@ -78,23 +81,6 @@ /* SYSCONFIG REGISTER */ #define USBOTGSS_SYSCONFIG_DMADISABLE (1 << 16) -#define USBOTGSS_SYSCONFIG_STANDBYMODE(x) ((x) << 4) - -#define USBOTGSS_STANDBYMODE_FORCE_STANDBY 0 -#define USBOTGSS_STANDBYMODE_NO_STANDBY 1 -#define USBOTGSS_STANDBYMODE_SMART_STANDBY 2 -#define USBOTGSS_STANDBYMODE_SMART_WAKEUP 3 - -#define USBOTGSS_STANDBYMODE_MASK (0x03 << 4) - -#define USBOTGSS_SYSCONFIG_IDLEMODE(x) ((x) << 2) - -#define USBOTGSS_IDLEMODE_FORCE_IDLE 0 -#define USBOTGSS_IDLEMODE_NO_IDLE 1 -#define USBOTGSS_IDLEMODE_SMART_IDLE 2 -#define USBOTGSS_IDLEMODE_SMART_WAKEUP 3 - -#define USBOTGSS_IDLEMODE_MASK (0x03 << 2) /* IRQ_EOI REGISTER */ #define USBOTGSS_IRQ_EOI_LINE_NUMBER (1 << 0) @@ -133,7 +119,6 @@ struct dwc3_omap { /* device lock */ spinlock_t lock; - struct platform_device *dwc3; struct platform_device *usb2_phy; struct platform_device *usb3_phy; struct device *dev; @@ -147,6 +132,8 @@ struct dwc3_omap { u32 dma_status:1; }; +struct dwc3_omap *_omap; + static inline u32 dwc3_omap_readl(void __iomem *base, u32 offset) { return readl(base + offset); @@ -157,6 +144,57 @@ static inline void dwc3_omap_writel(void __iomem *base, u32 offset, u32 value) writel(value, base + offset); } +void dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status) +{ + u32 val; + struct dwc3_omap *omap = _omap; + + switch (status) { + case OMAP_DWC3_ID_GROUND: + dev_dbg(omap->dev, "ID GND\n"); + + val = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); + val &= ~(USBOTGSS_UTMI_OTG_STATUS_IDDIG + | USBOTGSS_UTMI_OTG_STATUS_VBUSVALID + | USBOTGSS_UTMI_OTG_STATUS_SESSEND); + val |= USBOTGSS_UTMI_OTG_STATUS_SESSVALID + | USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT; + dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, val); + break; + + case OMAP_DWC3_VBUS_VALID: + dev_dbg(omap->dev, "VBUS Connect\n"); + + val = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); + val &= ~USBOTGSS_UTMI_OTG_STATUS_SESSEND; + val |= USBOTGSS_UTMI_OTG_STATUS_IDDIG + | USBOTGSS_UTMI_OTG_STATUS_VBUSVALID + | USBOTGSS_UTMI_OTG_STATUS_SESSVALID + | USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT; + dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, val); + break; + + case OMAP_DWC3_ID_FLOAT: + case OMAP_DWC3_VBUS_OFF: + dev_dbg(omap->dev, "VBUS Disconnect\n"); + + val = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); + val &= ~(USBOTGSS_UTMI_OTG_STATUS_SESSVALID + | USBOTGSS_UTMI_OTG_STATUS_VBUSVALID + | USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT); + val |= USBOTGSS_UTMI_OTG_STATUS_SESSEND + | USBOTGSS_UTMI_OTG_STATUS_IDDIG; + dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, val); + break; + + default: + dev_dbg(omap->dev, "ID float\n"); + } + + return; +} +EXPORT_SYMBOL_GPL(dwc3_omap_mailbox); + static int dwc3_omap_register_phys(struct dwc3_omap *omap) { struct nop_usb_xceiv_platform_data pdata; @@ -165,7 +203,7 @@ static int dwc3_omap_register_phys(struct dwc3_omap *omap) memset(&pdata, 0x00, sizeof(pdata)); - pdev = platform_device_alloc("nop_usb_xceiv", 0); + pdev = platform_device_alloc("nop_usb_xceiv", PLATFORM_DEVID_AUTO); if (!pdev) return -ENOMEM; @@ -176,7 +214,7 @@ static int dwc3_omap_register_phys(struct dwc3_omap *omap) if (ret) goto err1; - pdev = platform_device_alloc("nop_usb_xceiv", 1); + pdev = platform_device_alloc("nop_usb_xceiv", PLATFORM_DEVID_AUTO); if (!pdev) { ret = -ENOMEM; goto err1; @@ -262,12 +300,20 @@ static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap) return IRQ_HANDLED; } +static int dwc3_omap_remove_core(struct device *dev, void *c) +{ + struct platform_device *pdev = to_platform_device(dev); + + platform_device_unregister(pdev); + + return 0; +} + static int dwc3_omap_probe(struct platform_device *pdev) { struct dwc3_omap_data *pdata = pdev->dev.platform_data; struct device_node *node = pdev->dev.of_node; - struct platform_device *dwc3; struct dwc3_omap *omap; struct resource *res; struct device *dev = &pdev->dev; @@ -314,30 +360,32 @@ static int dwc3_omap_probe(struct platform_device *pdev) return ret; } - dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO); - if (!dwc3) { - dev_err(dev, "couldn't allocate dwc3 device\n"); - return -ENOMEM; - } - context = devm_kzalloc(dev, resource_size(res), GFP_KERNEL); if (!context) { dev_err(dev, "couldn't allocate dwc3 context memory\n"); - goto err2; + return -ENOMEM; } spin_lock_init(&omap->lock); - dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask); - dwc3->dev.parent = dev; - dwc3->dev.dma_mask = dev->dma_mask; - dwc3->dev.dma_parms = dev->dma_parms; omap->resource_size = resource_size(res); omap->context = context; omap->dev = dev; omap->irq = irq; omap->base = base; - omap->dwc3 = dwc3; + + /* + * REVISIT if we ever have two instances of the wrapper, we will be + * in big trouble + */ + _omap = omap; + + pm_runtime_enable(dev); + ret = pm_runtime_get_sync(dev); + if (ret < 0) { + dev_err(dev, "get_sync failed with err %d\n", ret); + return ret; + } reg = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); @@ -368,21 +416,12 @@ static int dwc3_omap_probe(struct platform_device *pdev) reg = dwc3_omap_readl(omap->base, USBOTGSS_SYSCONFIG); omap->dma_status = !!(reg & USBOTGSS_SYSCONFIG_DMADISABLE); - /* Set No-Idle and No-Standby */ - reg &= ~(USBOTGSS_STANDBYMODE_MASK - | USBOTGSS_IDLEMODE_MASK); - - reg |= (USBOTGSS_SYSCONFIG_STANDBYMODE(USBOTGSS_STANDBYMODE_NO_STANDBY) - | USBOTGSS_SYSCONFIG_IDLEMODE(USBOTGSS_IDLEMODE_NO_IDLE)); - - dwc3_omap_writel(omap->base, USBOTGSS_SYSCONFIG, reg); - ret = devm_request_irq(dev, omap->irq, dwc3_omap_interrupt, 0, "dwc3-omap", omap); if (ret) { dev_err(dev, "failed to request IRQ #%d --> %d\n", omap->irq, ret); - goto err2; + return ret; } /* enable all IRQs */ @@ -401,33 +440,28 @@ static int dwc3_omap_probe(struct platform_device *pdev) dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_1, reg); - ret = platform_device_add_resources(dwc3, pdev->resource, - pdev->num_resources); - if (ret) { - dev_err(dev, "couldn't add resources to dwc3 device\n"); - goto err2; - } - - ret = platform_device_add(dwc3); - if (ret) { - dev_err(dev, "failed to register dwc3 device\n"); - goto err2; + if (node) { + ret = of_platform_populate(node, NULL, NULL, dev); + if (ret) { + dev_err(&pdev->dev, + "failed to add create dwc3 core\n"); + return ret; + } } return 0; - -err2: - platform_device_put(dwc3); - return ret; } static int dwc3_omap_remove(struct platform_device *pdev) { struct dwc3_omap *omap = platform_get_drvdata(pdev); - platform_device_unregister(omap->dwc3); platform_device_unregister(omap->usb2_phy); platform_device_unregister(omap->usb3_phy); + pm_runtime_put_sync(&pdev->dev); + pm_runtime_disable(&pdev->dev); + device_for_each_child(&pdev->dev, NULL, dwc3_omap_remove_core); + return 0; } |