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Commit fe5b25c0 authored by Michael Hennerich's avatar Michael Hennerich Committed by Mike Frysinger
Browse files

Blackfin: bf537-stamp: add example ADS7846 touchscreen resources 



Signed-off-by: default avatarMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
parent ddaebcab

arch/blackfin/mach-bf537/boards/stamp.c

+35 −1
Original line number Diff line number Diff line
@@ -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)