diff options
| author | Michael Hennerich <michael.hennerich@analog.com> | 2008-10-13 11:30:17 +0800 |
|---|---|---|
| committer | Bryan Wu <cooloney@kernel.org> | 2008-10-13 11:30:17 +0800 |
| commit | 46aa04f9b678d1d6f3558429109326775ca87715 (patch) | |
| tree | 6f2b6b9a60513f51516b0c3ecf46486ce7914279 /arch/blackfin/mach-bf537/boards/stamp.c | |
| parent | 58c35bd31f8b577e03d904c214b55b3d91369a85 (diff) | |
Blackfin arch: AD7879 Touchscreen driver
Add AD7879 Touchscreen driver to the device structures
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin/mach-bf537/boards/stamp.c')
| -rw-r--r-- | arch/blackfin/mach-bf537/boards/stamp.c | 40 |
1 files changed, 37 insertions, 3 deletions
diff --git a/arch/blackfin/mach-bf537/boards/stamp.c b/arch/blackfin/mach-bf537/boards/stamp.c index ccfa0880184..dc5a30849c1 100644 --- a/arch/blackfin/mach-bf537/boards/stamp.c +++ b/arch/blackfin/mach-bf537/boards/stamp.c @@ -51,7 +51,6 @@ #include <asm/reboot.h> #include <asm/portmux.h> #include <asm/dpmc.h> -#include <linux/spi/ad7877.h> /* * Name the Board for the /proc/cpuinfo @@ -555,6 +554,7 @@ static struct bfin5xx_spi_chip spi_si3xxx_chip_info = { #endif #if defined(CONFIG_TOUCHSCREEN_AD7877) || defined(CONFIG_TOUCHSCREEN_AD7877_MODULE) +#include <linux/spi/ad7877.h> static struct bfin5xx_spi_chip spi_ad7877_chip_info = { .enable_dma = 0, .bits_per_word = 16, @@ -575,6 +575,28 @@ 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 struct bfin5xx_spi_chip spi_ad7879_chip_info = { + .enable_dma = 0, + .bits_per_word = 16, +}; + +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_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE) static struct bfin5xx_spi_chip spidev_chip_info = { .enable_dma = 0, @@ -728,6 +750,18 @@ static struct spi_board_info bfin_spi_board_info[] __initdata = { .controller_data = &spi_ad7877_chip_info, }, #endif +#if defined(CONFIG_TOUCHSCREEN_AD7879) || defined(CONFIG_TOUCHSCREEN_AD7879_MODULE) + { + .modalias = "ad7879", + .platform_data = &bfin_ad7879_ts_info, + .irq = IRQ_PF7, + .max_speed_hz = 5000000, /* max spi clock (SCK) speed in HZ */ + .bus_num = 0, + .chip_select = 1, + .controller_data = &spi_ad7879_chip_info, + .mode = SPI_CPHA | SPI_CPOL, + }, +#endif #if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE) { .modalias = "spidev", @@ -742,7 +776,7 @@ static struct spi_board_info bfin_spi_board_info[] __initdata = { .modalias = "bfin-lq035q1-spi", .max_speed_hz = 20000000, /* max spi clock (SCK) speed in HZ */ .bus_num = 0, - .chip_select = 1, + .chip_select = 2, .controller_data = &lq035q1_spi_chip_info, .mode = SPI_CPHA | SPI_CPOL, }, @@ -799,7 +833,7 @@ static struct platform_device bfin_fb_adv7393_device = { static struct bfin_lq035q1fb_disp_info bfin_lq035q1_data = { .mode = LQ035_NORM | LQ035_RGB | LQ035_RL | LQ035_TB, - .use_bl = 1, + .use_bl = 0, /* let something else control the LCD Blacklight */ .gpio_bl = GPIO_PF7, }; |