From f6e5306ecf269cac52cb06a2f356431f63640595 Mon Sep 17 00:00:00 2001 From: Cyril Chemparathy Date: Tue, 18 Jan 2011 19:21:41 +0000 Subject: [PATCH] davinci: add spi devices on tnetv107x evm This patch adds definitions for spi devices on the tnetv107x evm platform. Signed-off-by: Cyril Chemparathy Signed-off-by: Sekhar Nori Signed-off-by: Kevin Hilman --- arch/arm/mach-davinci/board-tnetv107x-evm.c | 43 +++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/arch/arm/mach-davinci/board-tnetv107x-evm.c b/arch/arm/mach-davinci/board-tnetv107x-evm.c index ef526b184eaf..1a656e882262 100644 --- a/arch/arm/mach-davinci/board-tnetv107x-evm.c +++ b/arch/arm/mach-davinci/board-tnetv107x-evm.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include @@ -37,6 +38,7 @@ #define EVM_MMC_WP_GPIO 21 #define EVM_MMC_CD_GPIO 24 +#define EVM_SPI_CS_GPIO 54 static int initialize_gpio(int gpio, char *desc) { @@ -202,9 +204,45 @@ static struct matrix_keypad_platform_data keypad_config = { .no_autorepeat = 0, }; +static void spi_select_device(int cs) +{ + static int gpio; + + if (!gpio) { + int ret; + ret = gpio_request(EVM_SPI_CS_GPIO, "spi chipsel"); + if (ret < 0) { + pr_err("cannot open spi chipsel gpio\n"); + gpio = -ENOSYS; + return; + } else { + gpio = EVM_SPI_CS_GPIO; + gpio_direction_output(gpio, 0); + } + } + + if (gpio < 0) + return; + + return gpio_set_value(gpio, cs ? 1 : 0); +} + +static struct ti_ssp_spi_data spi_master_data = { + .num_cs = 2, + .select = spi_select_device, + .iosel = SSP_PIN_SEL(0, SSP_CLOCK) | SSP_PIN_SEL(1, SSP_DATA) | + SSP_PIN_SEL(2, SSP_CHIPSEL) | SSP_PIN_SEL(3, SSP_IN) | + SSP_INPUT_SEL(3), +}; + static struct ti_ssp_data ssp_config = { .out_clock = 250 * 1000, .dev_data = { + [1] = { + .dev_name = "ti-ssp-spi", + .pdata = &spi_master_data, + .pdata_size = sizeof(spi_master_data), + }, }, }; @@ -216,6 +254,9 @@ static struct tnetv107x_device_info evm_device_info __initconst = { .ssp_config = &ssp_config, }; +static struct spi_board_info spi_info[] __initconst = { +}; + static __init void tnetv107x_evm_board_init(void) { davinci_cfg_reg_list(sdio1_pins); @@ -223,6 +264,8 @@ static __init void tnetv107x_evm_board_init(void) davinci_cfg_reg_list(ssp_pins); tnetv107x_devices_init(&evm_device_info); + + spi_register_board_info(spi_info, ARRAY_SIZE(spi_info)); } #ifdef CONFIG_SERIAL_8250_CONSOLE -- 2.39.5