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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>
This commit is contained in:
Michael Hennerich 2010-02-04 14:41:39 +00:00 committed by Mike Frysinger
parent ddaebcabbc
commit fe5b25c098
1 changed files with 35 additions and 1 deletions
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36
arch/blackfin/mach-bf537/boards/stamp.c
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@ -825,6 +825,29 @@ static inline void adf702x_mac_init(void)
static inline void adf702x_mac_init(void) {} static inline void adf702x_mac_init(void) {}
#endif #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) \ #if defined(CONFIG_MTD_DATAFLASH) \
|| defined(CONFIG_MTD_DATAFLASH_MODULE) || defined(CONFIG_MTD_DATAFLASH_MODULE)
@ -1026,7 +1049,18 @@ static struct spi_board_info bfin_spi_board_info[] __initdata = {
.mode = SPI_MODE_0, .mode = SPI_MODE_0,
}, },
#endif #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) #if defined(CONFIG_SPI_BFIN) || defined(CONFIG_SPI_BFIN_MODULE)