[ARM] 3594/1: Poodle: Add touchscreen support + other updates

Patch from Richard Purdie

Poodle Updates:
* Update corgi_ssp to make the GPIO chip selects optional
* Enable corgi_ssp for use by poodle
* Add corgi touchscreen platform device for poodle
* Export locomo platform device.
* Set framebuffer device parent correctly

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 28 insertions, 14 deletions

diff --git a/arch/arm/mach-pxa/corgi_ssp.c b/arch/arm/mach-pxa/corgi_ssp.c
index 8a25a1c8019..f9421318cb7 100644
--- a/arch/arm/mach-pxa/corgi_ssp.c
+++ b/arch/arm/mach-pxa/corgi_ssp.c
@@ -50,12 +50,14 @@ unsigned long corgi_ssp_ads7846_putget(ulong data)
 	unsigned long ret,flag;
 
 	spin_lock_irqsave(&corgi_ssp_lock, flag);
-	GPCR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846);
+	if (ssp_machinfo->cs_ads7846 >= 0)
+		GPCR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846);
 
 	ssp_write_word(&corgi_ssp_dev,data);
 	ret = ssp_read_word(&corgi_ssp_dev);
 
-	GPSR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846);
+	if (ssp_machinfo->cs_ads7846 >= 0)
+		GPSR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846);
 	spin_unlock_irqrestore(&corgi_ssp_lock, flag);
 
 	return ret;
@@ -68,12 +70,14 @@ unsigned long corgi_ssp_ads7846_putget(ulong data)
 void corgi_ssp_ads7846_lock(void)
 {
 	spin_lock(&corgi_ssp_lock);
-	GPCR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846);
+	if (ssp_machinfo->cs_ads7846 >= 0)
+		GPCR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846);
 }
 
 void corgi_ssp_ads7846_unlock(void)
 {
-	GPSR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846);
+	if (ssp_machinfo->cs_ads7846 >= 0)
+		GPSR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846);
 	spin_unlock(&corgi_ssp_lock);
 }
 
@@ -110,11 +114,13 @@ unsigned long corgi_ssp_dac_put(ulong data)
 	ssp_config(&corgi_ssp_dev, (SSCR0_Motorola | (SSCR0_DSS & 0x07 )), sscr1, 0, SSCR0_SerClkDiv(ssp_machinfo->clk_lcdcon));
 	ssp_enable(&corgi_ssp_dev);
 
-	GPCR(ssp_machinfo->cs_lcdcon) = GPIO_bit(ssp_machinfo->cs_lcdcon);
+	if (ssp_machinfo->cs_lcdcon >= 0)
+		GPCR(ssp_machinfo->cs_lcdcon) = GPIO_bit(ssp_machinfo->cs_lcdcon);
 	ssp_write_word(&corgi_ssp_dev,data);
 	/* Read null data back from device to prevent SSP overflow */
 	ssp_read_word(&corgi_ssp_dev);
-	GPSR(ssp_machinfo->cs_lcdcon) = GPIO_bit(ssp_machinfo->cs_lcdcon);
+	if (ssp_machinfo->cs_lcdcon >= 0)
+		GPSR(ssp_machinfo->cs_lcdcon) = GPIO_bit(ssp_machinfo->cs_lcdcon);
 
 	ssp_disable(&corgi_ssp_dev);
 	ssp_config(&corgi_ssp_dev, (SSCR0_National | (SSCR0_DSS & 0x0b )), 0, 0, SSCR0_SerClkDiv(ssp_machinfo->clk_ads7846));
@@ -147,7 +153,8 @@ int corgi_ssp_max1111_get(ulong data)
 	int voltage,voltage1,voltage2;
 
 	spin_lock_irqsave(&corgi_ssp_lock, flag);
-	GPCR(ssp_machinfo->cs_max1111) = GPIO_bit(ssp_machinfo->cs_max1111);
+	if (ssp_machinfo->cs_max1111 >= 0)
+		GPCR(ssp_machinfo->cs_max1111) = GPIO_bit(ssp_machinfo->cs_max1111);
 	ssp_disable(&corgi_ssp_dev);
 	ssp_config(&corgi_ssp_dev, (SSCR0_Motorola | (SSCR0_DSS & 0x07 )), 0, 0, SSCR0_SerClkDiv(ssp_machinfo->clk_max1111));
 	ssp_enable(&corgi_ssp_dev);
@@ -169,7 +176,8 @@ int corgi_ssp_max1111_get(ulong data)
 	ssp_disable(&corgi_ssp_dev);
 	ssp_config(&corgi_ssp_dev, (SSCR0_National | (SSCR0_DSS & 0x0b )), 0, 0, SSCR0_SerClkDiv(ssp_machinfo->clk_ads7846));
 	ssp_enable(&corgi_ssp_dev);
-	GPSR(ssp_machinfo->cs_max1111) = GPIO_bit(ssp_machinfo->cs_max1111);
+	if (ssp_machinfo->cs_max1111 >= 0)
+		GPSR(ssp_machinfo->cs_max1111) = GPIO_bit(ssp_machinfo->cs_max1111);
 	spin_unlock_irqrestore(&corgi_ssp_lock, flag);
 
 	if (voltage1 & 0xc0 || voltage2 & 0x3f)
@@ -196,9 +204,12 @@ static int __init corgi_ssp_probe(struct platform_device *dev)
 	int ret;
 
 	/* Chip Select - Disable All */
-	pxa_gpio_mode(ssp_machinfo->cs_lcdcon  | GPIO_OUT | GPIO_DFLT_HIGH);
-        pxa_gpio_mode(ssp_machinfo->cs_max1111 | GPIO_OUT | GPIO_DFLT_HIGH);
-        pxa_gpio_mode(ssp_machinfo->cs_ads7846 | GPIO_OUT | GPIO_DFLT_HIGH);
+	if (ssp_machinfo->cs_lcdcon >= 0)
+		pxa_gpio_mode(ssp_machinfo->cs_lcdcon  | GPIO_OUT | GPIO_DFLT_HIGH);
+	if (ssp_machinfo->cs_max1111 >= 0)
+	        pxa_gpio_mode(ssp_machinfo->cs_max1111 | GPIO_OUT | GPIO_DFLT_HIGH);
+	if (ssp_machinfo->cs_ads7846 >= 0)
+        	pxa_gpio_mode(ssp_machinfo->cs_ads7846 | GPIO_OUT | GPIO_DFLT_HIGH);
 
 	ret = ssp_init(&corgi_ssp_dev, ssp_machinfo->port, 0);
 
@@ -229,9 +240,12 @@ static int corgi_ssp_suspend(struct platform_device *dev, pm_message_t state)
 
 static int corgi_ssp_resume(struct platform_device *dev)
 {
-	GPSR(ssp_machinfo->cs_lcdcon) = GPIO_bit(ssp_machinfo->cs_lcdcon);  /* High - Disable LCD Control/Timing Gen */
-	GPSR(ssp_machinfo->cs_max1111) = GPIO_bit(ssp_machinfo->cs_max1111); /* High - Disable MAX1111*/
-	GPSR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846); /* High - Disable ADS7846*/
+	if (ssp_machinfo->cs_lcdcon >= 0)
+		GPSR(ssp_machinfo->cs_lcdcon) = GPIO_bit(ssp_machinfo->cs_lcdcon);  /* High - Disable LCD Control/Timing Gen */
+	if (ssp_machinfo->cs_max1111 >= 0)
+		GPSR(ssp_machinfo->cs_max1111) = GPIO_bit(ssp_machinfo->cs_max1111); /* High - Disable MAX1111*/
+	if (ssp_machinfo->cs_ads7846 >= 0)
+		GPSR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846); /* High - Disable ADS7846*/
 	ssp_restore_state(&corgi_ssp_dev,&corgi_ssp_state);
 	ssp_enable(&corgi_ssp_dev);