diff options
author | Milan Svoboda <msvoboda@ra.rockwell.com> | 2007-06-30 17:25:35 +0400 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-07-13 03:34:42 +0400 |
commit | 9068a4c6467986e8fda5bdb29bd5f10c6788e2ff (patch) | |
tree | dcb2889be80b750da2454c60a1d567e391ee560b | |
parent | e4f747373cd96c86db3c64c21710748c6889c03c (diff) | |
download | linux-9068a4c6467986e8fda5bdb29bd5f10c6788e2ff.tar.xz |
USB: pxa2xx_udc: use generic gpio layer
This patch lets the pxa2xx_udc use the generic gpio layer,
on the relevant PXA and IXP systems.
Signed-off-by: Milan Svoboda <msvoboda@ra.rockwell.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r-- | drivers/usb/gadget/pxa2xx_udc.c | 63 | ||||
-rw-r--r-- | include/asm-arm/arch-ixp4xx/udc.h | 22 | ||||
-rw-r--r-- | include/asm-arm/arch-pxa/udc.h | 33 |
3 files changed, 49 insertions, 69 deletions
diff --git a/drivers/usb/gadget/pxa2xx_udc.c b/drivers/usb/gadget/pxa2xx_udc.c index 84392e835d5f..c9ec0b3e582a 100644 --- a/drivers/usb/gadget/pxa2xx_udc.c +++ b/drivers/usb/gadget/pxa2xx_udc.c @@ -27,6 +27,7 @@ #undef DEBUG // #define VERBOSE DBG_VERBOSE +#include <linux/device.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/ioport.h> @@ -46,19 +47,17 @@ #include <asm/byteorder.h> #include <asm/dma.h> +#include <asm/gpio.h> #include <asm/io.h> #include <asm/system.h> #include <asm/mach-types.h> #include <asm/unaligned.h> #include <asm/hardware.h> -#ifdef CONFIG_ARCH_PXA -#include <asm/arch/pxa-regs.h> -#endif #include <linux/usb/ch9.h> #include <linux/usb_gadget.h> -#include <asm/arch/udc.h> +#include <asm/mach/udc_pxa2xx.h> /* @@ -155,7 +154,7 @@ static int is_vbus_present(void) struct pxa2xx_udc_mach_info *mach = the_controller->mach; if (mach->gpio_vbus) - return udc_gpio_get(mach->gpio_vbus); + return gpio_get_value(mach->gpio_vbus); if (mach->udc_is_connected) return mach->udc_is_connected(); return 1; @@ -167,7 +166,7 @@ static void pullup_off(void) struct pxa2xx_udc_mach_info *mach = the_controller->mach; if (mach->gpio_pullup) - udc_gpio_set(mach->gpio_pullup, 0); + gpio_set_value(mach->gpio_pullup, 0); else if (mach->udc_command) mach->udc_command(PXA2XX_UDC_CMD_DISCONNECT); } @@ -177,7 +176,7 @@ static void pullup_on(void) struct pxa2xx_udc_mach_info *mach = the_controller->mach; if (mach->gpio_pullup) - udc_gpio_set(mach->gpio_pullup, 1); + gpio_set_value(mach->gpio_pullup, 1); else if (mach->udc_command) mach->udc_command(PXA2XX_UDC_CMD_CONNECT); } @@ -1742,7 +1741,7 @@ lubbock_vbus_irq(int irq, void *_dev) static irqreturn_t udc_vbus_irq(int irq, void *_dev) { struct pxa2xx_udc *dev = _dev; - int vbus = udc_gpio_get(dev->mach->gpio_vbus); + int vbus = gpio_get_value(dev->mach->gpio_vbus); pxa2xx_udc_vbus_session(&dev->gadget, vbus); return IRQ_HANDLED; @@ -2535,14 +2534,33 @@ static int __init pxa2xx_udc_probe(struct platform_device *pdev) /* other non-static parts of init */ dev->dev = &pdev->dev; dev->mach = pdev->dev.platform_data; + if (dev->mach->gpio_vbus) { - udc_gpio_init_vbus(dev->mach->gpio_vbus); - vbus_irq = udc_gpio_to_irq(dev->mach->gpio_vbus); + if ((retval = gpio_request(dev->mach->gpio_vbus, + "pxa2xx_udc GPIO VBUS"))) { + dev_dbg(&pdev->dev, + "can't get vbus gpio %d, err: %d\n", + dev->mach->gpio_vbus, retval); + return -EBUSY; + } + gpio_direction_input(dev->mach->gpio_vbus); + vbus_irq = gpio_to_irq(dev->mach->gpio_vbus); set_irq_type(vbus_irq, IRQT_BOTHEDGE); } else vbus_irq = 0; - if (dev->mach->gpio_pullup) - udc_gpio_init_pullup(dev->mach->gpio_pullup); + + if (dev->mach->gpio_pullup) { + if ((retval = gpio_request(dev->mach->gpio_pullup, + "pca2xx_udc GPIO PULLUP"))) { + dev_dbg(&pdev->dev, + "can't get pullup gpio %d, err: %d\n", + dev->mach->gpio_pullup, retval); + if (dev->mach->gpio_vbus) + gpio_free(dev->mach->gpio_vbus); + return -EBUSY; + } + gpio_direction_output(dev->mach->gpio_pullup, 0); + } init_timer(&dev->timer); dev->timer.function = udc_watchdog; @@ -2566,6 +2584,10 @@ static int __init pxa2xx_udc_probe(struct platform_device *pdev) if (retval != 0) { printk(KERN_ERR "%s: can't get irq %d, err %d\n", driver_name, irq, retval); + if (dev->mach->gpio_pullup) + gpio_free(dev->mach->gpio_pullup); + if (dev->mach->gpio_vbus) + gpio_free(dev->mach->gpio_vbus); return -EBUSY; } dev->got_irq = 1; @@ -2581,6 +2603,10 @@ static int __init pxa2xx_udc_probe(struct platform_device *pdev) driver_name, LUBBOCK_USB_DISC_IRQ, retval); lubbock_fail0: free_irq(irq, dev); + if (dev->mach->gpio_pullup) + gpio_free(dev->mach->gpio_pullup); + if (dev->mach->gpio_vbus) + gpio_free(dev->mach->gpio_vbus); return -EBUSY; } retval = request_irq(LUBBOCK_USB_IRQ, @@ -2608,6 +2634,10 @@ lubbock_fail0: printk(KERN_ERR "%s: can't get irq %i, err %d\n", driver_name, vbus_irq, retval); free_irq(irq, dev); + if (dev->mach->gpio_pullup) + gpio_free(dev->mach->gpio_pullup); + if (dev->mach->gpio_vbus) + gpio_free(dev->mach->gpio_vbus); return -EBUSY; } } @@ -2641,8 +2671,13 @@ static int __exit pxa2xx_udc_remove(struct platform_device *pdev) free_irq(LUBBOCK_USB_IRQ, dev); } #endif - if (dev->mach->gpio_vbus) - free_irq(IRQ_GPIO(dev->mach->gpio_vbus), dev); + if (dev->mach->gpio_vbus) { + free_irq(gpio_to_irq(dev->mach->gpio_vbus), dev); + gpio_free(dev->mach->gpio_vbus); + } + if (dev->mach->gpio_pullup) + gpio_free(dev->mach->gpio_pullup); + platform_set_drvdata(pdev, NULL); the_controller = NULL; return 0; diff --git a/include/asm-arm/arch-ixp4xx/udc.h b/include/asm-arm/arch-ixp4xx/udc.h index 79b850a3be47..dbdec36ff0d1 100644 --- a/include/asm-arm/arch-ixp4xx/udc.h +++ b/include/asm-arm/arch-ixp4xx/udc.h @@ -6,25 +6,3 @@ extern void ixp4xx_set_udc_info(struct pxa2xx_udc_mach_info *info); -static inline int udc_gpio_to_irq(unsigned gpio) -{ - return 0; -} - -static inline void udc_gpio_init_vbus(unsigned gpio) -{ -} - -static inline void udc_gpio_init_pullup(unsigned gpio) -{ -} - -static inline int udc_gpio_get(unsigned gpio) -{ - return 0; -} - -static inline void udc_gpio_set(unsigned gpio, int is_on) -{ -} - diff --git a/include/asm-arm/arch-pxa/udc.h b/include/asm-arm/arch-pxa/udc.h index 8bc6f9c3e3ea..27aa3a91012f 100644 --- a/include/asm-arm/arch-pxa/udc.h +++ b/include/asm-arm/arch-pxa/udc.h @@ -1,41 +1,8 @@ /* * linux/include/asm-arm/arch-pxa/udc.h * - * This supports machine-specific differences in how the PXA2xx - * USB Device Controller (UDC) is wired. - * */ #include <asm/mach/udc_pxa2xx.h> extern void pxa_set_udc_info(struct pxa2xx_udc_mach_info *info); -static inline int udc_gpio_to_irq(unsigned gpio) -{ - return IRQ_GPIO(gpio & GPIO_MD_MASK_NR); -} - -static inline void udc_gpio_init_vbus(unsigned gpio) -{ - pxa_gpio_mode((gpio & GPIO_MD_MASK_NR) | GPIO_IN); -} - -static inline void udc_gpio_init_pullup(unsigned gpio) -{ - pxa_gpio_mode((gpio & GPIO_MD_MASK_NR) | GPIO_OUT | GPIO_DFLT_LOW); -} - -static inline int udc_gpio_get(unsigned gpio) -{ - return (GPLR(gpio) & GPIO_bit(gpio)) != 0; -} - -static inline void udc_gpio_set(unsigned gpio, int is_on) -{ - int mask = GPIO_bit(gpio); - - if (is_on) - GPSR(gpio) = mask; - else - GPCR(gpio) = mask; -} - |