diff options
| author | Dmitry Lavnikevich <d.lavnikevich@sam-solutions.net> | 2013-05-13 17:21:10 +0300 |
|---|---|---|
| committer | Justin Waters <justin.waters@timesys.com> | 2013-11-07 12:19:31 -0500 |
| commit | b6b0a0682e4503a3c4dded8bd835024ece15ff28 (patch) | |
| tree | 527f7cd4c6927ebd25d6f2160fa7d0dd215a4ca0 /arch | |
| parent | 24500e2e4bff773d1ca822ca3af2730e5d7f62cb (diff) | |
Implemented video capture board led control.
For led control pca9538 is used. Currently both green and red leds are
on for selected video input.
Signed-off-by: Uladzimir Bely <u.bely@sam-solutions.net>
Signed-off-by: Christian Hemp <c.hemp@phytec.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-mx6/board-mx6q_phyflex.c | 48 |
1 files changed, 47 insertions, 1 deletions
diff --git a/arch/arm/mach-mx6/board-mx6q_phyflex.c b/arch/arm/mach-mx6/board-mx6q_phyflex.c index b98344145981..43d7973c7891 100644 --- a/arch/arm/mach-mx6/board-mx6q_phyflex.c +++ b/arch/arm/mach-mx6/board-mx6q_phyflex.c @@ -33,6 +33,7 @@ #include <linux/spi/flash.h> #include <linux/i2c.h> #include <linux/i2c/at24.h> +#include <linux/i2c/pca953x.h> #include <linux/leds-pca9532.h> #include <linux/ata.h> #include <linux/mtd/mtd.h> @@ -138,7 +139,7 @@ // #define MX6_PHYFLEX_CAN2_EN IMX_GPIO_NR(5, 24) #define MX6_PHYFLEX_CSI0_RST_TVIN IMX_GPIO_NR(5, 25) #define MX6_PHYFLEX_MAX7310_1_BASE_ADDR IMX_GPIO_NR(8, 0) -#define MX6_PHYFLEX_MAX7310_2_BASE_ADDR IMX_GPIO_NR(8, 8) +#define MX6_PHYFLEX_PCA9538_BASE_ADDR IMX_GPIO_NR(8, 8) // #define MX6_PHYFLEX_IO_EXP_GPIO1(x) (MX6_PHYFLEX_MAX7310_1_BASE_ADDR + (x)) // #define MX6_PHYFLEX_IO_EXP_GPIO2(x) (MX6_PHYFLEX_MAX7310_2_BASE_ADDR + (x)) @@ -364,6 +365,26 @@ static struct edt_ft5x06_platform_data mx6_phyflex_ft5x06_data = { .reset_pin = -1, /* static high */ }; +static int pca9538_setup(struct i2c_client *client, + unsigned gpio_base, unsigned ngpio, + void *context) +{ + int n; + + for (n = 0; n < ngpio; ++n) { + gpio_request(gpio_base + n, "PCA9538 GPIO Expander"); + gpio_direction_output(gpio_base + n, 1); + } + + return 0; +} + +static struct pca953x_platform_data pca9538_platdata = { + .gpio_base = MX6_PHYFLEX_PCA9538_BASE_ADDR, + .invert = 0, + .setup = pca9538_setup, +}; + static struct i2c_board_info mxc_i2c0_board_info[] __initdata = { { I2C_BOARD_INFO("max7300", 0x40), @@ -402,6 +423,9 @@ static struct i2c_board_info mxc_i2c2_board_info[] __initdata = { I2C_BOARD_INFO("stmpe811", 0x41), .irq = gpio_to_irq(MX6_PHYFLEX_CAP_TCH_INT1), .platform_data = (void *)&stmpe811_data1, + }, { + I2C_BOARD_INFO("pca9538", 0x70), + .platform_data = &pca9538_platdata, } }; @@ -1050,7 +1074,29 @@ static struct i2c_board_info phyflex_cameras[] = { #define SOC_CAM_LINK(bus, bi, i2c_adapter) \ .bus_id = bus, .board_info = bi, .i2c_adapter_id = i2c_adapter +int tw9910_switch_input(int input) +{ + int i; + + for (i = 0; i < 4; i++) { + if (i == input) { + gpio_direction_output(MX6_PHYFLEX_PCA9538_BASE_ADDR + + i * 2, 0); + gpio_direction_output(MX6_PHYFLEX_PCA9538_BASE_ADDR + + i * 2 + 1, 0); + } else { + gpio_direction_output(MX6_PHYFLEX_PCA9538_BASE_ADDR + + i * 2, 1); + gpio_direction_output(MX6_PHYFLEX_PCA9538_BASE_ADDR + + i * 2 + 1, 1); + } + } + + return 0; +} + struct tw9910_video_info tw9910_info = { + .switch_input = tw9910_switch_input, .buswidth = SOCAM_DATAWIDTH_8, .mpout = TW9910_MPO_RTCO, }; |