diff options
| author | Michael Hennerich <michael.hennerich@analog.com> | 2010-02-04 14:41:39 +0000 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2010-03-09 00:30:51 -0500 |
| commit | fe5b25c09873faee44077ee6ff8f23eee61b0fa0 (patch) | |
| tree | d8879e7869aca5bad4941d69b4c16082cf1a9858 /arch/blackfin/mach-bf537 | |
| parent | ddaebcabbc18811ac4ac6e84fb9c327e8393a1dc (diff) | |
Blackfin: bf537-stamp: add example ADS7846 touchscreen resources
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/mach-bf537')
| -rw-r--r-- | arch/blackfin/mach-bf537/boards/stamp.c | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/arch/blackfin/mach-bf537/boards/stamp.c b/arch/blackfin/mach-bf537/boards/stamp.c index 9bc7bd3f35f..7a1d645bbfb 100644 --- a/arch/blackfin/mach-bf537/boards/stamp.c +++ b/arch/blackfin/mach-bf537/boards/stamp.c @@ -825,6 +825,29 @@ static inline void adf702x_mac_init(void) static inline void adf702x_mac_init(void) {} #endif +#if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE) +#include <linux/spi/ads7846.h> +static struct bfin5xx_spi_chip ad7873_spi_chip_info = { + .bits_per_word = 8, +}; + +static int ads7873_get_pendown_state(void) +{ + return gpio_get_value(GPIO_PF6); +} + +static struct ads7846_platform_data __initdata ad7873_pdata = { + .model = 7873, /* AD7873 */ + .x_max = 0xfff, + .y_max = 0xfff, + .x_plate_ohms = 620, + .debounce_max = 1, + .debounce_rep = 0, + .debounce_tol = (~0), + .get_pendown_state = ads7873_get_pendown_state, +}; +#endif + #if defined(CONFIG_MTD_DATAFLASH) \ || defined(CONFIG_MTD_DATAFLASH_MODULE) @@ -1026,7 +1049,18 @@ static struct spi_board_info bfin_spi_board_info[] __initdata = { .mode = SPI_MODE_0, }, #endif - +#if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE) + { + .modalias = "ads7846", + .max_speed_hz = 2000000, /* max spi clock (SCK) speed in HZ */ + .bus_num = 0, + .irq = IRQ_PF6, + .chip_select = GPIO_PF10 + MAX_CTRL_CS, /* GPIO controlled SSEL */ + .controller_data = &ad7873_spi_chip_info, + .platform_data = &ad7873_pdata, + .mode = SPI_MODE_0, + }, +#endif }; #if defined(CONFIG_SPI_BFIN) || defined(CONFIG_SPI_BFIN_MODULE) |