From mboxrd@z Thu Jan 1 00:00:00 1970 From: Cyril Chemparathy Subject: [PATCH v2 05/12] davinci: add spi devices on tnetv107x evm Date: Mon, 18 Oct 2010 15:25:15 -0400 Message-ID: <1287429922-18870-6-git-send-email-cyril@ti.com> References: <1287429922-18870-1-git-send-email-cyril@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Cyril Chemparathy To: davinci-linux-open-source-VycZQUHpC/PFrsHnngEfi1aTQe2KTcn/@public.gmane.org, spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org, lrg-kDsPt+C1G03kYMGBc/C6ZA@public.gmane.org, dbrownell-Rn4VEauK+AKRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, gra Return-path: In-Reply-To: <1287429922-18870-1-git-send-email-cyril-l0cyMroinI0@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: spi-devel-general-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-spi.vger.kernel.org This patch adds definitions for spi devices on the tnetv107x evm platform. Signed-off-by: Cyril Chemparathy --- arch/arm/mach-davinci/board-tnetv107x-evm.c | 45 +++++++++++++++++++++++++++ 1 files changed, 45 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-davinci/board-tnetv107x-evm.c b/arch/arm/mach-davinci/board-tnetv107x-evm.c index 401ad26..c37c5c6 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 @@ -38,6 +39,7 @@ #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) { @@ -203,9 +205,47 @@ 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 const struct ti_ssp_spi_data spi_master_data = { + .num_cs = 2, + .select = spi_select_device, +}; + static struct ti_ssp_data ssp_config = { .out_clock = 250 * 1000, .dev_data = { + [1] = { + .dev_name = "ti-ssp-spi", + .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), + .pdata = &spi_master_data, + .pdata_sz = sizeof(spi_master_data), + }, }, }; @@ -217,6 +257,9 @@ 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); @@ -224,6 +267,8 @@ 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 -- 1.7.0.4 ------------------------------------------------------------------------------ Download new Adobe(R) Flash(R) Builder(TM) 4 The new Adobe(R) Flex(R) 4 and Flash(R) Builder(TM) 4 (formerly Flex(R) Builder(TM)) enable the development of rich applications that run across multiple browsers and platforms. Download your free trials today! http://p.sf.net/sfu/adobe-dev2dev