diff options
| -rw-r--r-- | drivers/mfd/omap-usb-host.c | 48 | ||||
| -rw-r--r-- | drivers/usb/host/ehci-omap.c | 18 |
2 files changed, 55 insertions, 11 deletions
diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c index 7e96bb2..41088ec 100644 --- a/drivers/mfd/omap-usb-host.c +++ b/drivers/mfd/omap-usb-host.c @@ -25,6 +25,7 @@ #include <linux/clk.h> #include <linux/dma-mapping.h> #include <linux/spinlock.h> +#include <linux/gpio.h> #include <plat/cpu.h> #include <plat/usb.h> #include <linux/pm_runtime.h> @@ -500,8 +501,21 @@ static void omap_usbhs_init(struct device *dev) dev_dbg(dev, "starting TI HSUSB Controller\n"); pm_runtime_get_sync(dev); - spin_lock_irqsave(&omap->lock, flags); + if (pdata->ehci_data->phy_reset) { + if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) + gpio_request_one(pdata->ehci_data->reset_gpio_port[0], + GPIOF_OUT_INIT_LOW, "USB1 PHY reset"); + + if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) + gpio_request_one(pdata->ehci_data->reset_gpio_port[1], + GPIOF_OUT_INIT_LOW, "USB2 PHY reset"); + + /* Hold the PHY in RESET for enough time till DIR is high */ + udelay(10); + } + + spin_lock_irqsave(&omap->lock, flags); omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION); dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev); @@ -581,9 +595,39 @@ static void omap_usbhs_init(struct device *dev) } spin_unlock_irqrestore(&omap->lock, flags); + + if (pdata->ehci_data->phy_reset) { + /* Hold the PHY in RESET for enough time till + * PHY is settled and ready + */ + udelay(10); + + if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) + gpio_set_value_cansleep + (pdata->ehci_data->reset_gpio_port[0], 1); + + if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) + gpio_set_value_cansleep + (pdata->ehci_data->reset_gpio_port[1], 1); + } + pm_runtime_put_sync(dev); } +static void omap_usbhs_deinit(struct device *dev) +{ + struct usbhs_hcd_omap *omap = dev_get_drvdata(dev); + struct usbhs_omap_platform_data *pdata = &omap->platdata; + + if (pdata->ehci_data->phy_reset) { + if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) + gpio_free(pdata->ehci_data->reset_gpio_port[0]); + + if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) + gpio_free(pdata->ehci_data->reset_gpio_port[1]); + } +} + /** * usbhs_omap_probe - initialize TI-based HCDs @@ -767,6 +811,7 @@ static int __devinit usbhs_omap_probe(struct platform_device *pdev) goto end_probe; err_alloc: + omap_usbhs_deinit(&pdev->dev); iounmap(omap->tll_base); err_tll: @@ -818,6 +863,7 @@ static int __devexit usbhs_omap_remove(struct platform_device *pdev) { struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev); + omap_usbhs_deinit(&pdev->dev); iounmap(omap->tll_base); iounmap(omap->uhh_base); clk_put(omap->init_60m_fclk); diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c index 17cfb8a..c304354 100644 --- a/drivers/usb/host/ehci-omap.c +++ b/drivers/usb/host/ehci-omap.c @@ -281,14 +281,13 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev) } } + /* Hold PHYs in reset while initializing EHCI controller */ if (pdata->phy_reset) { if (gpio_is_valid(pdata->reset_gpio_port[0])) - gpio_request_one(pdata->reset_gpio_port[0], - GPIOF_OUT_INIT_LOW, "USB1 PHY reset"); + gpio_set_value_cansleep(pdata->reset_gpio_port[0], 0); if (gpio_is_valid(pdata->reset_gpio_port[1])) - gpio_request_one(pdata->reset_gpio_port[1], - GPIOF_OUT_INIT_LOW, "USB2 PHY reset"); + gpio_set_value_cansleep(pdata->reset_gpio_port[1], 0); /* Hold the PHY in RESET for enough time till DIR is high */ udelay(10); @@ -330,6 +329,11 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev) omap_ehci->hcs_params = readl(&omap_ehci->caps->hcs_params); ehci_reset(omap_ehci); + ret = usb_add_hcd(hcd, irq, IRQF_SHARED); + if (ret) { + dev_err(dev, "failed to add hcd with err %d\n", ret); + goto err_add_hcd; + } if (pdata->phy_reset) { /* Hold the PHY in RESET for enough time till @@ -344,12 +348,6 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev) gpio_set_value_cansleep(pdata->reset_gpio_port[1], 1); } - ret = usb_add_hcd(hcd, irq, IRQF_SHARED); - if (ret) { - dev_err(dev, "failed to add hcd with err %d\n", ret); - goto err_add_hcd; - } - /* root ports should always stay powered */ ehci_port_power(omap_ehci, 1); |
