diff options
| author | Fabio Estevam <fabioestevam@yahoo.com> | 2010-06-21 13:33:05 -0700 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2010-07-26 14:18:31 +0200 |
| commit | 41f634758a73ad2e8554382c5b5edaff011975b9 (patch) | |
| tree | 38f78e0c2007db6d93f61770243fc6b4baf9aae0 | |
| parent | f747847e8f0312ddc50fe7cb7ed4f6399ec154e0 (diff) | |
mx31_3ds: Handle USB OTG GPIO Errors
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| -rw-r--r-- | arch/arm/mach-mx3/mach-mx31_3ds.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/arch/arm/mach-mx3/mach-mx31_3ds.c b/arch/arm/mach-mx3/mach-mx31_3ds.c index 58e57291b79..7e8d09ab9e6 100644 --- a/arch/arm/mach-mx3/mach-mx31_3ds.c +++ b/arch/arm/mach-mx3/mach-mx31_3ds.c @@ -182,8 +182,10 @@ static struct mxc_nand_platform_data imx31_3ds_nand_flash_pdata = { #define USBOTG_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_PWR) -static void mx31_3ds_usbotg_init(void) +static int mx31_3ds_usbotg_init(void) { + int err; + mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG); mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG); mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG); @@ -197,10 +199,25 @@ static void mx31_3ds_usbotg_init(void) mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG); mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG); - gpio_request(USBOTG_RST_B, "otgusb-reset"); - gpio_direction_output(USBOTG_RST_B, 0); + err = gpio_request(USBOTG_RST_B, "otgusb-reset"); + if (err) { + pr_err("Failed to request the USB OTG reset gpio\n"); + return err; + } + + err = gpio_direction_output(USBOTG_RST_B, 0); + if (err) { + pr_err("Failed to drive the USB OTG reset gpio\n"); + goto usbotg_free_reset; + } + mdelay(1); gpio_set_value(USBOTG_RST_B, 1); + return 0; + +usbotg_free_reset: + gpio_free(USBOTG_RST_B); + return err; } static struct fsl_usb2_platform_data usbotg_pdata = { |