From 581f84e24b45ab871ae5f15f9290261c7226ffa9 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Tue, 21 Jun 2011 14:49:37 -0300 Subject: [PATCH] mxc: iomuxv1: Do not use gpio_request when setting the pin as GPIO When setting the IOMUX of multiple pins via mxc_gpio_setup_multiple_pins, gpio_request is called and this prevents subsequent calls of gpio_request done by drivers to succeed. Remove gpio_request call from mxc_gpio_setup_multiple_pins function. As gpio_request is removed from mxc_gpio_setup_multiple_pins, there is no need to have mxc_gpio_release_multiple_pins anymore, so remove this function. Tested on a mx27_3ds board and after applying this patch it is possible to define all the IOMUX setup in a static array Signed-off-by: Fabio Estevam Signed-off-by: Sascha Hauer --- arch/arm/plat-mxc/include/mach/iomux-v1.h | 1 - arch/arm/plat-mxc/iomux-v1.c | 32 ----------------------- 2 files changed, 33 deletions(-) diff --git a/arch/arm/plat-mxc/include/mach/iomux-v1.h b/arch/arm/plat-mxc/include/mach/iomux-v1.h index c07d30210c57..253d64d686f8 100644 --- a/arch/arm/plat-mxc/include/mach/iomux-v1.h +++ b/arch/arm/plat-mxc/include/mach/iomux-v1.h @@ -98,7 +98,6 @@ extern int mxc_gpio_mode(int gpio_mode); extern int mxc_gpio_setup_multiple_pins(const int *pin_list, unsigned count, const char *label); -extern void mxc_gpio_release_multiple_pins(const int *pin_list, int count); extern int __init imx_iomuxv1_init(void __iomem *base, int numports); diff --git a/arch/arm/plat-mxc/iomux-v1.c b/arch/arm/plat-mxc/iomux-v1.c index 3238c10d4e02..d76f3ac25e5d 100644 --- a/arch/arm/plat-mxc/iomux-v1.c +++ b/arch/arm/plat-mxc/iomux-v1.c @@ -172,45 +172,13 @@ static int imx_iomuxv1_setup_multiple(const int *list, unsigned count) int mxc_gpio_setup_multiple_pins(const int *pin_list, unsigned count, const char *label) { - size_t i; int ret; - for (i = 0; i < count; ++i) { - unsigned gpio = pin_list[i] & (GPIO_PIN_MASK | GPIO_PORT_MASK); - - ret = gpio_request(gpio, label); - if (ret) - goto err_gpio_request; - } - ret = imx_iomuxv1_setup_multiple(pin_list, count); - if (ret) - goto err_setup; - - return 0; - -err_setup: - BUG_ON(i != count); - -err_gpio_request: - mxc_gpio_release_multiple_pins(pin_list, i); - return ret; } EXPORT_SYMBOL(mxc_gpio_setup_multiple_pins); -void mxc_gpio_release_multiple_pins(const int *pin_list, int count) -{ - size_t i; - - for (i = 0; i < count; ++i) { - unsigned gpio = pin_list[i] & (GPIO_PIN_MASK | GPIO_PORT_MASK); - - gpio_free(gpio); - } -} -EXPORT_SYMBOL(mxc_gpio_release_multiple_pins); - int __init imx_iomuxv1_init(void __iomem *base, int numports) { imx_iomuxv1_baseaddr = base; -- 2.34.1