diff options
| author | Michael Hennerich <michael.hennerich@analog.com> | 2009-01-07 23:14:38 +0800 |
|---|---|---|
| committer | Bryan Wu <cooloney@kernel.org> | 2009-01-07 23:14:38 +0800 |
| commit | 5105432a3201e3f0e6c219cd0a74feee1e5e262b (patch) | |
| tree | c27a97e6715f599d07a3256add5dccdb824bb30b /arch/blackfin/mach-bf527/boards/ezbrd.c | |
| parent | cc92b870a779500f444419f27bf73c6c7660ff9c (diff) | |
Blackfin arch: Add AD7879 defaults for the Blackfin Landscape LCD EZ-Extender
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin/mach-bf527/boards/ezbrd.c')
| -rw-r--r-- | arch/blackfin/mach-bf527/boards/ezbrd.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/blackfin/mach-bf527/boards/ezbrd.c b/arch/blackfin/mach-bf527/boards/ezbrd.c index 6f6ce180910..0314bd3355e 100644 --- a/arch/blackfin/mach-bf527/boards/ezbrd.c +++ b/arch/blackfin/mach-bf527/boards/ezbrd.c @@ -288,6 +288,30 @@ static const struct ad7877_platform_data bfin_ad7877_ts_info = { }; #endif +#if defined(CONFIG_TOUCHSCREEN_AD7879) || defined(CONFIG_TOUCHSCREEN_AD7879_MODULE) +#include <linux/spi/ad7879.h> +static const struct ad7879_platform_data bfin_ad7879_ts_info = { + .model = 7879, /* Model = AD7879 */ + .x_plate_ohms = 620, /* 620 Ohm from the touch datasheet */ + .pressure_max = 10000, + .pressure_min = 0, + .first_conversion_delay = 3, /* wait 512us before do a first conversion */ + .acquisition_time = 1, /* 4us acquisition time per sample */ + .median = 2, /* do 8 measurements */ + .averaging = 1, /* take the average of 4 middle samples */ + .pen_down_acc_interval = 255, /* 9.4 ms */ + .gpio_output = 1, /* configure AUX/VBAT/GPIO as GPIO output */ + .gpio_default = 1, /* During initialization set GPIO = HIGH */ +}; +#endif + +#if defined(CONFIG_TOUCHSCREEN_AD7879_SPI) || defined(CONFIG_TOUCHSCREEN_AD7879_SPI_MODULE) +static struct bfin5xx_spi_chip spi_ad7879_chip_info = { + .enable_dma = 0, + .bits_per_word = 16, +}; +#endif + #if defined(CONFIG_SND_SOC_WM8731) || defined(CONFIG_SND_SOC_WM8731_MODULE) \ && defined(CONFIG_SND_SOC_WM8731_SPI) static struct bfin5xx_spi_chip spi_wm8731_chip_info = { @@ -386,6 +410,18 @@ static struct spi_board_info bfin_spi_board_info[] __initdata = { .controller_data = &spi_ad7877_chip_info, }, #endif +#if defined(CONFIG_TOUCHSCREEN_AD7879_SPI) || defined(CONFIG_TOUCHSCREEN_AD7879_SPI_MODULE) + { + .modalias = "ad7879", + .platform_data = &bfin_ad7879_ts_info, + .irq = IRQ_PG0, + .max_speed_hz = 5000000, /* max spi clock (SCK) speed in HZ */ + .bus_num = 0, + .chip_select = 5, + .controller_data = &spi_ad7879_chip_info, + .mode = SPI_CPHA | SPI_CPOL, + }, +#endif #if defined(CONFIG_SND_SOC_WM8731) || defined(CONFIG_SND_SOC_WM8731_MODULE) \ && defined(CONFIG_SND_SOC_WM8731_SPI) { |