[ARM] pxa: make ads7846 on corgi and spitz to sync on HSYNC

Signed-off-by: Eric Miao <eric.miao@marvell.com>
git-mirror · Apr 27, 2009 · 3e36c0d · 3e36c0d
1 parent 36b5437
commit 3e36c0d
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diff --git a/arch/arm/mach-pxa/corgi.c b/arch/arm/mach-pxa/corgi.c
@@ -427,12 +427,22 @@ static struct pxa2xx_spi_master corgi_spi_info = {
 	.num_chipselect	= 3,
 };
 
+static void corgi_wait_for_hsync(void)
+{
+	while (gpio_get_value(CORGI_GPIO_HSYNC))
+		cpu_relax();
+
+	while (!gpio_get_value(CORGI_GPIO_HSYNC))
+		cpu_relax();
+}
+
 static struct ads7846_platform_data corgi_ads7846_info = {
 	.model			= 7846,
 	.vref_delay_usecs	= 100,
 	.x_plate_ohms		= 419,
 	.y_plate_ohms		= 486,
 	.gpio_pendown		= CORGI_GPIO_TP_INT,
+	.wait_for_sync		= corgi_wait_for_hsync,
 };
 
 static void corgi_ads7846_cs(u32 command)

diff --git a/arch/arm/mach-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c
@@ -299,12 +299,22 @@ static struct pxa2xx_spi_master spitz_spi_info = {
 	.num_chipselect	= 3,
 };
 
+static void spitz_wait_for_hsync(void)
+{
+	while (gpio_get_value(SPITZ_GPIO_HSYNC))
+		cpu_relax();
+
+	while (!gpio_get_value(SPITZ_GPIO_HSYNC))
+		cpu_relax();
+}
+
 static struct ads7846_platform_data spitz_ads7846_info = {
 	.model			= 7846,
 	.vref_delay_usecs	= 100,
 	.x_plate_ohms		= 419,
 	.y_plate_ohms		= 486,
 	.gpio_pendown		= SPITZ_GPIO_TP_INT,
+	.wait_for_sync		= spitz_wait_for_hsync,
 };
 
 static void spitz_ads7846_cs(u32 command)