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| author | Fabio Estevam <fabio.estevam@freescale.com> | 2011-06-21 14:49:37 -0300 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-07-07 09:06:58 +0200 |
| commit | 581f84e24b45ab871ae5f15f9290261c7226ffa9 (patch) | |
| tree | aa05e5cef2e9c2797158e3744157fc4bb528eb9b /arch/arm | |
| parent | b2a08e3e46f594ad605c9b5f5fce6b9f36a9a3eb (diff) | |
| download | linux-581f84e24b45ab871ae5f15f9290261c7226ffa9.tar.gz linux-581f84e24b45ab871ae5f15f9290261c7226ffa9.tar.bz2 linux-581f84e24b45ab871ae5f15f9290261c7226ffa9.zip | |
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 <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/plat-mxc/include/mach/iomux-v1.h | 1 | ||||
| -rw-r--r-- | arch/arm/plat-mxc/iomux-v1.c | 32 |
2 files changed, 0 insertions, 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; |