From: Sascha Hauer Date: Tue, 4 Nov 2008 15:48:46 +0000 (+0100) Subject: [ARM] MX1/MX2: simplify mxc_gpio_setup_multiple_pins X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7bd1822135175354e1662cc890a156f1d89dc211;p=openwrt%2Fstaging%2Fblogic.git [ARM] MX1/MX2: simplify mxc_gpio_setup_multiple_pins mxc_gpio_setup_multiple_pins used to take several ALLOC_MODE flags. Most of them are unused, so simplify the function by removing the flags. Also, instead of using a confusing MXC_GPIO_ALLOC_MODE_RELEASE flag in a function having alloc in its name, add a mxc_gpio_release_multiple_pins function. Signed-off-by: Sascha Hauer --- diff --git a/arch/arm/mach-mx2/mx27ads.c b/arch/arm/mach-mx2/mx27ads.c index 56e22d3ca075..a06497674436 100644 --- a/arch/arm/mach-mx2/mx27ads.c +++ b/arch/arm/mach-mx2/mx27ads.c @@ -68,15 +68,14 @@ static int mxc_uart0_pins[] = { static int uart_mxc_port0_init(struct platform_device *pdev) { return mxc_gpio_setup_multiple_pins(mxc_uart0_pins, - ARRAY_SIZE(mxc_uart0_pins), - MXC_GPIO_ALLOC_MODE_NORMAL, "UART0"); + ARRAY_SIZE(mxc_uart0_pins), "UART0"); } static int uart_mxc_port0_exit(struct platform_device *pdev) { - return mxc_gpio_setup_multiple_pins(mxc_uart0_pins, - ARRAY_SIZE(mxc_uart0_pins), - MXC_GPIO_ALLOC_MODE_RELEASE, "UART0"); + mxc_gpio_release_multiple_pins(mxc_uart0_pins, + ARRAY_SIZE(mxc_uart0_pins)); + return 0; } static int mxc_uart1_pins[] = { @@ -89,15 +88,14 @@ static int mxc_uart1_pins[] = { static int uart_mxc_port1_init(struct platform_device *pdev) { return mxc_gpio_setup_multiple_pins(mxc_uart1_pins, - ARRAY_SIZE(mxc_uart1_pins), - MXC_GPIO_ALLOC_MODE_NORMAL, "UART1"); + ARRAY_SIZE(mxc_uart1_pins), "UART1"); } static int uart_mxc_port1_exit(struct platform_device *pdev) { - return mxc_gpio_setup_multiple_pins(mxc_uart1_pins, - ARRAY_SIZE(mxc_uart1_pins), - MXC_GPIO_ALLOC_MODE_RELEASE, "UART1"); + mxc_gpio_setup_release_pins(mxc_uart1_pins, + ARRAY_SIZE(mxc_uart1_pins)); + return 0; } static int mxc_uart2_pins[] = { @@ -110,15 +108,14 @@ static int mxc_uart2_pins[] = { static int uart_mxc_port2_init(struct platform_device *pdev) { return mxc_gpio_setup_multiple_pins(mxc_uart2_pins, - ARRAY_SIZE(mxc_uart2_pins), - MXC_GPIO_ALLOC_MODE_NORMAL, "UART2"); + ARRAY_SIZE(mxc_uart2_pins), "UART2"); } static int uart_mxc_port2_exit(struct platform_device *pdev) { - return mxc_gpio_setup_multiple_pins(mxc_uart2_pins, - ARRAY_SIZE(mxc_uart2_pins), - MXC_GPIO_ALLOC_MODE_RELEASE, "UART2"); + mxc_gpio_release_multiple_pins(mxc_uart2_pins, + ARRAY_SIZE(mxc_uart2_pins)); + return 0; } static int mxc_uart3_pins[] = { @@ -131,15 +128,13 @@ static int mxc_uart3_pins[] = { static int uart_mxc_port3_init(struct platform_device *pdev) { return mxc_gpio_setup_multiple_pins(mxc_uart3_pins, - ARRAY_SIZE(mxc_uart3_pins), - MXC_GPIO_ALLOC_MODE_NORMAL, "UART3"); + ARRAY_SIZE(mxc_uart3_pins), "UART3"); } static int uart_mxc_port3_exit(struct platform_device *pdev) { - return mxc_gpio_setup_multiple_pins(mxc_uart3_pins, - ARRAY_SIZE(mxc_uart3_pins), - MXC_GPIO_ALLOC_MODE_RELEASE, "UART3"); + mxc_gpio_release_multiple_pins(mxc_uart3_pins, + ARRAY_SIZE(mxc_uart3_pins)); } static int mxc_uart4_pins[] = { @@ -152,15 +147,14 @@ static int mxc_uart4_pins[] = { static int uart_mxc_port4_init(struct platform_device *pdev) { return mxc_gpio_setup_multiple_pins(mxc_uart4_pins, - ARRAY_SIZE(mxc_uart4_pins), - MXC_GPIO_ALLOC_MODE_NORMAL, "UART4"); + ARRAY_SIZE(mxc_uart4_pins), "UART4"); } static int uart_mxc_port4_exit(struct platform_device *pdev) { - return mxc_gpio_setup_multiple_pins(mxc_uart4_pins, - ARRAY_SIZE(mxc_uart4_pins), - MXC_GPIO_ALLOC_MODE_RELEASE, "UART4"); + mxc_gpio_release_multiple_pins(mxc_uart4_pins, + ARRAY_SIZE(mxc_uart4_pins)); + return 0; } static int mxc_uart5_pins[] = { @@ -173,15 +167,14 @@ static int mxc_uart5_pins[] = { static int uart_mxc_port5_init(struct platform_device *pdev) { return mxc_gpio_setup_multiple_pins(mxc_uart5_pins, - ARRAY_SIZE(mxc_uart5_pins), - MXC_GPIO_ALLOC_MODE_NORMAL, "UART5"); + ARRAY_SIZE(mxc_uart5_pins), "UART5"); } static int uart_mxc_port5_exit(struct platform_device *pdev) { - return mxc_gpio_setup_multiple_pins(mxc_uart5_pins, - ARRAY_SIZE(mxc_uart5_pins), - MXC_GPIO_ALLOC_MODE_RELEASE, "UART5"); + mxc_gpio_release_multiple_pins(mxc_uart5_pins, + ARRAY_SIZE(mxc_uart5_pins)); + return 0; } static struct platform_device *platform_devices[] __initdata = { @@ -212,15 +205,13 @@ static int mxc_fec_pins[] = { static void gpio_fec_active(void) { mxc_gpio_setup_multiple_pins(mxc_fec_pins, - ARRAY_SIZE(mxc_fec_pins), - MXC_GPIO_ALLOC_MODE_NORMAL, "FEC"); + ARRAY_SIZE(mxc_fec_pins), "FEC"); } static void gpio_fec_inactive(void) { - mxc_gpio_setup_multiple_pins(mxc_fec_pins, - ARRAY_SIZE(mxc_fec_pins), - MXC_GPIO_ALLOC_MODE_RELEASE, "FEC"); + mxc_gpio_release_multiple_pins(mxc_fec_pins, + ARRAY_SIZE(mxc_fec_pins)); } static struct imxuart_platform_data uart_pdata[] = { diff --git a/arch/arm/mach-mx2/pcm038.c b/arch/arm/mach-mx2/pcm038.c index ac516b1d3f77..91a1e4bbccbc 100644 --- a/arch/arm/mach-mx2/pcm038.c +++ b/arch/arm/mach-mx2/pcm038.c @@ -64,15 +64,14 @@ static int mxc_uart0_pins[] = { static int uart_mxc_port0_init(struct platform_device *pdev) { return mxc_gpio_setup_multiple_pins(mxc_uart0_pins, - ARRAY_SIZE(mxc_uart0_pins), - MXC_GPIO_ALLOC_MODE_NORMAL, "UART0"); + ARRAY_SIZE(mxc_uart0_pins), "UART0"); } static int uart_mxc_port0_exit(struct platform_device *pdev) { - return mxc_gpio_setup_multiple_pins(mxc_uart0_pins, - ARRAY_SIZE(mxc_uart0_pins), - MXC_GPIO_ALLOC_MODE_RELEASE, "UART0"); + mxc_gpio_release_multiple_pins(mxc_uart0_pins, + ARRAY_SIZE(mxc_uart0_pins)); + return 0; } static int mxc_uart1_pins[] = { @@ -85,15 +84,14 @@ static int mxc_uart1_pins[] = { static int uart_mxc_port1_init(struct platform_device *pdev) { return mxc_gpio_setup_multiple_pins(mxc_uart1_pins, - ARRAY_SIZE(mxc_uart1_pins), - MXC_GPIO_ALLOC_MODE_NORMAL, "UART1"); + ARRAY_SIZE(mxc_uart1_pins), "UART1"); } static int uart_mxc_port1_exit(struct platform_device *pdev) { - return mxc_gpio_setup_multiple_pins(mxc_uart1_pins, - ARRAY_SIZE(mxc_uart1_pins), - MXC_GPIO_ALLOC_MODE_RELEASE, "UART1"); + mxc_gpio_release_multiple_pins(mxc_uart1_pins, + ARRAY_SIZE(mxc_uart1_pins)); + return 0; } static int mxc_uart2_pins[] = { PE10_PF_UART3_CTS, @@ -104,15 +102,14 @@ static int mxc_uart2_pins[] = { PE10_PF_UART3_CTS, static int uart_mxc_port2_init(struct platform_device *pdev) { return mxc_gpio_setup_multiple_pins(mxc_uart2_pins, - ARRAY_SIZE(mxc_uart2_pins), - MXC_GPIO_ALLOC_MODE_NORMAL, "UART2"); + ARRAY_SIZE(mxc_uart2_pins), "UART2"); } static int uart_mxc_port2_exit(struct platform_device *pdev) { - return mxc_gpio_setup_multiple_pins(mxc_uart2_pins, - ARRAY_SIZE(mxc_uart2_pins), - MXC_GPIO_ALLOC_MODE_RELEASE, "UART2"); + mxc_gpio_release_multiple_pins(mxc_uart2_pins, + ARRAY_SIZE(mxc_uart2_pins)); + return 0; } static struct imxuart_platform_data uart_pdata[] = { @@ -155,15 +152,13 @@ static int mxc_fec_pins[] = { static void gpio_fec_active(void) { mxc_gpio_setup_multiple_pins(mxc_fec_pins, - ARRAY_SIZE(mxc_fec_pins), - MXC_GPIO_ALLOC_MODE_NORMAL, "FEC"); + ARRAY_SIZE(mxc_fec_pins), "FEC"); } static void gpio_fec_inactive(void) { - mxc_gpio_setup_multiple_pins(mxc_fec_pins, - ARRAY_SIZE(mxc_fec_pins), - MXC_GPIO_ALLOC_MODE_RELEASE, "FEC"); + mxc_gpio_release_multiple_pins(mxc_fec_pins, + ARRAY_SIZE(mxc_fec_pins)); } static struct platform_device *platform_devices[] __initdata = { diff --git a/arch/arm/plat-mxc/include/mach/iomux-mx1-mx2.h b/arch/arm/plat-mxc/include/mach/iomux-mx1-mx2.h index f49d798c5c3c..6c331c939c00 100644 --- a/arch/arm/plat-mxc/include/mach/iomux-mx1-mx2.h +++ b/arch/arm/plat-mxc/include/mach/iomux-mx1-mx2.h @@ -21,12 +21,6 @@ #include -#define MXC_GPIO_ALLOC_MODE_NORMAL 0 -#define MXC_GPIO_ALLOC_MODE_NO_ALLOC 1 -#define MXC_GPIO_ALLOC_MODE_TRY_ALLOC 2 -#define MXC_GPIO_ALLOC_MODE_ALLOC_ONLY 4 -#define MXC_GPIO_ALLOC_MODE_RELEASE 8 - /* * GPIO Module and I/O Multiplexer * x = 0..3 for reg_A, reg_B, reg_C, reg_D @@ -103,7 +97,8 @@ extern void mxc_gpio_mode(int gpio_mode); extern int mxc_gpio_setup_multiple_pins(const int *pin_list, unsigned count, - int alloc_mode, const char *label); + const char *label); +extern void mxc_gpio_release_multiple_pins(const int *pin_list, int count); /*-------------------------------------------------------------------------*/ diff --git a/arch/arm/plat-mxc/iomux-mx1-mx2.c b/arch/arm/plat-mxc/iomux-mx1-mx2.c index d97387aa9a42..df6f18395686 100644 --- a/arch/arm/plat-mxc/iomux-mx1-mx2.c +++ b/arch/arm/plat-mxc/iomux-mx1-mx2.c @@ -110,12 +110,13 @@ void mxc_gpio_mode(int gpio_mode) EXPORT_SYMBOL(mxc_gpio_mode); int mxc_gpio_setup_multiple_pins(const int *pin_list, unsigned count, - int alloc_mode, const char *label) + const char *label) { const int *p = pin_list; int i; unsigned gpio; unsigned mode; + int ret = -EINVAL; for (i = 0; i < count; i++) { gpio = *p & (GPIO_PIN_MASK | GPIO_PORT_MASK); @@ -124,33 +125,33 @@ int mxc_gpio_setup_multiple_pins(const int *pin_list, unsigned count, if (gpio >= (GPIO_PORT_MAX + 1) * 32) goto setup_error; - if (alloc_mode & MXC_GPIO_ALLOC_MODE_RELEASE) - gpio_free(gpio); - else if (!(alloc_mode & MXC_GPIO_ALLOC_MODE_NO_ALLOC)) - if (gpio_request(gpio, label) - && !(alloc_mode & MXC_GPIO_ALLOC_MODE_TRY_ALLOC)) - goto setup_error; + ret = gpio_request(gpio, label); + if (ret) + goto setup_error; - if (!(alloc_mode & (MXC_GPIO_ALLOC_MODE_ALLOC_ONLY | - MXC_GPIO_ALLOC_MODE_RELEASE))) - mxc_gpio_mode(gpio | mode); + mxc_gpio_mode(gpio | mode); p++; } return 0; setup_error: - if (alloc_mode & (MXC_GPIO_ALLOC_MODE_NO_ALLOC | - MXC_GPIO_ALLOC_MODE_TRY_ALLOC)) - return -EINVAL; + mxc_gpio_release_multiple_pins(pin_list, i); + return ret; +} +EXPORT_SYMBOL(mxc_gpio_setup_multiple_pins); - while (p != pin_list) { - p--; - gpio = *p & (GPIO_PIN_MASK | GPIO_PORT_MASK); +void mxc_gpio_release_multiple_pins(const int *pin_list, int count) +{ + const int *p = pin_list; + int i; + + for (i = 0; i < count; i++) { + unsigned gpio = *p & (GPIO_PIN_MASK | GPIO_PORT_MASK); gpio_free(gpio); + p++; } - return -EINVAL; } -EXPORT_SYMBOL(mxc_gpio_setup_multiple_pins); +EXPORT_SYMBOL(mxc_gpio_release_multiple_pins);