diff options
Diffstat (limited to 'drivers/usb/host/isp1760-if.c')
| -rw-r--r-- | drivers/usb/host/isp1760-if.c | 80 |
1 files changed, 60 insertions, 20 deletions
diff --git a/drivers/usb/host/isp1760-if.c b/drivers/usb/host/isp1760-if.c index 7ee30056f373..2c7fc830c9e4 100644 --- a/drivers/usb/host/isp1760-if.c +++ b/drivers/usb/host/isp1760-if.c @@ -17,19 +17,28 @@ #include "isp1760-hcd.h" -#ifdef CONFIG_PPC_OF +#ifdef CONFIG_OF +#include <linux/slab.h> #include <linux/of.h> #include <linux/of_platform.h> +#include <linux/of_address.h> +#include <linux/of_irq.h> +#include <linux/of_gpio.h> #endif #ifdef CONFIG_PCI #include <linux/pci.h> #endif -#ifdef CONFIG_PPC_OF +#ifdef CONFIG_OF +struct isp1760 { + struct usb_hcd *hcd; + int rst_gpio; +}; + static int of_isp1760_probe(struct platform_device *dev) { - struct usb_hcd *hcd; + struct isp1760 *drvdata; struct device_node *dp = dev->dev.of_node; struct resource *res; struct resource memory; @@ -39,6 +48,11 @@ static int of_isp1760_probe(struct platform_device *dev) int ret; const unsigned int *prop; unsigned int devflags = 0; + enum of_gpio_flags gpio_flags; + + drvdata = kzalloc(sizeof(*drvdata), GFP_KERNEL); + if (!drvdata) + return -ENOMEM; ret = of_address_to_resource(dp, 0, &memory); if (ret) @@ -78,32 +92,57 @@ static int of_isp1760_probe(struct platform_device *dev) if (of_get_property(dp, "dreq-polarity", NULL) != NULL) devflags |= ISP1760_FLAG_DREQ_POL_HIGH; - hcd = isp1760_register(memory.start, res_len, virq, - IRQF_SHARED | IRQF_DISABLED, &dev->dev, dev_name(&dev->dev), - devflags); - if (IS_ERR(hcd)) { - ret = PTR_ERR(hcd); - goto release_reg; + drvdata->rst_gpio = of_get_gpio_flags(dp, 0, &gpio_flags); + if (gpio_is_valid(drvdata->rst_gpio)) { + ret = gpio_request(drvdata->rst_gpio, dev_name(&dev->dev)); + if (!ret) { + if (!(gpio_flags & OF_GPIO_ACTIVE_LOW)) { + devflags |= ISP1760_FLAG_RESET_ACTIVE_HIGH; + gpio_direction_output(drvdata->rst_gpio, 0); + } else { + gpio_direction_output(drvdata->rst_gpio, 1); + } + } else { + drvdata->rst_gpio = ret; + } } - dev_set_drvdata(&dev->dev, hcd); + drvdata->hcd = isp1760_register(memory.start, res_len, virq, + IRQF_SHARED, drvdata->rst_gpio, + &dev->dev, dev_name(&dev->dev), + devflags); + if (IS_ERR(drvdata->hcd)) { + ret = PTR_ERR(drvdata->hcd); + goto free_gpio; + } + + dev_set_drvdata(&dev->dev, drvdata); return ret; +free_gpio: + if (gpio_is_valid(drvdata->rst_gpio)) + gpio_free(drvdata->rst_gpio); release_reg: release_mem_region(memory.start, res_len); + kfree(drvdata); return ret; } static int of_isp1760_remove(struct platform_device *dev) { - struct usb_hcd *hcd = dev_get_drvdata(&dev->dev); + struct isp1760 *drvdata = dev_get_drvdata(&dev->dev); dev_set_drvdata(&dev->dev, NULL); - usb_remove_hcd(hcd); - iounmap(hcd->regs); - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); - usb_put_hcd(hcd); + usb_remove_hcd(drvdata->hcd); + iounmap(drvdata->hcd->regs); + release_mem_region(drvdata->hcd->rsrc_start, drvdata->hcd->rsrc_len); + usb_put_hcd(drvdata->hcd); + + if (gpio_is_valid(drvdata->rst_gpio)) + gpio_free(drvdata->rst_gpio); + + kfree(drvdata); return 0; } @@ -240,7 +279,7 @@ static int __devinit isp1761_pci_probe(struct pci_dev *dev, dev->dev.dma_mask = NULL; hcd = isp1760_register(pci_mem_phy0, memlength, dev->irq, - IRQF_SHARED | IRQF_DISABLED, &dev->dev, dev_name(&dev->dev), + IRQF_SHARED, -ENOENT, &dev->dev, dev_name(&dev->dev), devflags); if (IS_ERR(hcd)) { ret_status = -ENODEV; @@ -313,7 +352,7 @@ static int __devinit isp1760_plat_probe(struct platform_device *pdev) resource_size_t mem_size; struct isp1760_platform_data *priv = pdev->dev.platform_data; unsigned int devflags = 0; - unsigned long irqflags = IRQF_SHARED | IRQF_DISABLED; + unsigned long irqflags = IRQF_SHARED; mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!mem_res) { @@ -351,7 +390,8 @@ static int __devinit isp1760_plat_probe(struct platform_device *pdev) } hcd = isp1760_register(mem_res->start, mem_size, irq_res->start, - irqflags, &pdev->dev, dev_name(&pdev->dev), devflags); + irqflags, -ENOENT, + &pdev->dev, dev_name(&pdev->dev), devflags); if (IS_ERR(hcd)) { pr_warning("isp1760: Failed to register the HCD device\n"); ret = -ENODEV; @@ -396,7 +436,7 @@ static int __init isp1760_init(void) ret = platform_driver_register(&isp1760_plat_driver); if (!ret) any_ret = 0; -#ifdef CONFIG_PPC_OF +#ifdef CONFIG_OF ret = platform_driver_register(&isp1760_of_driver); if (!ret) any_ret = 0; @@ -416,7 +456,7 @@ module_init(isp1760_init); static void __exit isp1760_exit(void) { platform_driver_unregister(&isp1760_plat_driver); -#ifdef CONFIG_PPC_OF +#ifdef CONFIG_OF platform_driver_unregister(&isp1760_of_driver); #endif #ifdef CONFIG_PCI |