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authorMichael Hennerich <michael.hennerich@analog.com>2010-02-04 14:41:39 +0000
committerMike Frysinger <vapier@gentoo.org>2010-03-09 00:30:51 -0500
commitfe5b25c09873faee44077ee6ff8f23eee61b0fa0 (patch)
treed8879e7869aca5bad4941d69b4c16082cf1a9858 /arch/blackfin/mach-bf537/boards/stamp.c
parentddaebcabbc18811ac4ac6e84fb9c327e8393a1dc (diff)
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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>
Diffstat (limited to 'arch/blackfin/mach-bf537/boards/stamp.c')
-rw-r--r--arch/blackfin/mach-bf537/boards/stamp.c36
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 9bc7bd3f35f8..7a1d645bbfbb 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)