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>

2 files changed, 72 insertions, 0 deletions

diff --git a/arch/blackfin/mach-bf527/boards/ezbrd.c b/arch/blackfin/mach-bf527/boards/ezbrd.c
index 6f6ce180910f..0314bd3355eb 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)
         {
diff --git a/arch/blackfin/mach-bf527/boards/ezkit.c b/arch/blackfin/mach-bf527/boards/ezkit.c
index 28cb8f1a39e6..9454fb7b18c3 100644
--- a/arch/blackfin/mach-bf527/boards/ezkit.c
+++ b/arch/blackfin/mach-bf527/boards/ezkit.c
@@ -534,6 +534,30 @@ 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 = {
@@ -624,6 +648,18 @@ 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_PF8,
+                .max_speed_hz = 5000000,     /* max spi clock (SCK) speed in HZ */
+                .bus_num = 0,
+                .chip_select = 3,
+                .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)
         {