[PATCH] SharpSL: Abstract c7x0 specifics from Corgi Touchscreen driver

Separate out the Sharp Zaurus c7x0 series specific code from the Corgi
Touchscreen driver.  Use the new functions in corgi_lcd.c via sharpsl.h for
hsync handling and pass the IRQ as a platform device resource.  Move a
function prototype into the w100fb header file where it belongs.

This enables the driver to be used by the Zaurus cxx00 series.

Signed-Off-by: Richard Purdie <rpurdie@rpsys.net>
Cc: Vojtech Pavlik <vojtech@suse.cz>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

4 files changed, 64 insertions, 31 deletions

diff --git a/arch/arm/mach-pxa/corgi.c b/arch/arm/mach-pxa/corgi.c
index 3678d1e0e826..fc428b827671 100644
--- a/arch/arm/mach-pxa/corgi.c
+++ b/arch/arm/mach-pxa/corgi.c
@@ -130,12 +130,29 @@ static struct platform_device corgikbd_device = {
 /*
  * Corgi Touch Screen Device
  */
+static struct resource corgits_resources[] = {
+        [0] = {
+                .start          = CORGI_IRQ_GPIO_TP_INT,
+                .end            = CORGI_IRQ_GPIO_TP_INT,
+                .flags          = IORESOURCE_IRQ,
+        },
+};
+
+static struct corgits_machinfo  corgi_ts_machinfo = {
+        .get_hsync_len   = corgi_get_hsync_len,
+        .put_hsync       = corgi_put_hsync,
+        .wait_hsync      = corgi_wait_hsync,
+};
+
 static struct platform_device corgits_device = {
         .name           = "corgi-ts",
         .dev            = {
                 .parent = &corgissp_device.dev,
+                .platform_data  = &corgi_ts_machinfo,
         },
         .id             = -1,
+        .num_resources  = ARRAY_SIZE(corgits_resources),
+        .resource       = corgits_resources,
 };
 
 
@@ -239,6 +256,7 @@ static void __init corgi_init(void)
         corgi_ssp_set_machinfo(&corgi_ssp_machinfo);
 
         pxa_gpio_mode(CORGI_GPIO_USB_PULLUP | GPIO_OUT);
+        pxa_gpio_mode(CORGI_GPIO_HSYNC | GPIO_IN);
         pxa_set_udc_info(&udc_info);
         pxa_set_mci_info(&corgi_mci_platform_data);
 
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 0489af5a80c9..21d55ed4b88a 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -24,17 +24,17 @@ config TOUCHSCREEN_BITSY
           module will be called h3600_ts_input.
 
 config TOUCHSCREEN_CORGI
-        tristate "Corgi touchscreen (for Sharp SL-C7xx)"
+        tristate "SharpSL (Corgi and Spitz series) touchscreen driver"
         depends on PXA_SHARPSL
         default y       
         help
           Say Y here to enable the driver for the touchscreen on the 
-          Sharp SL-C7xx series of PDAs.
+          Sharp SL-C7xx and SL-Cxx00 series of PDAs.
 
           If unsure, say N.
 
           To compile this driver as a module, choose M here: the
-          module will be called ads7846_ts.
+          module will be called corgi_ts.
 
 config TOUCHSCREEN_GUNZE
         tristate "Gunze AHL-51S touchscreen"
diff --git a/drivers/input/touchscreen/corgi_ts.c b/drivers/input/touchscreen/corgi_ts.c
index 5d19261b884f..4c7fbe550365 100644
--- a/drivers/input/touchscreen/corgi_ts.c
+++ b/drivers/input/touchscreen/corgi_ts.c
@@ -1,5 +1,5 @@
 /*
- *  Touchscreen driver for Sharp Corgi models (SL-C7xx)
+ *  Touchscreen driver for Sharp SL-C7xx and SL-Cxx00 models
  *
  *  Copyright (c) 2004-2005 Richard Purdie
  *
@@ -19,7 +19,7 @@
 #include <linux/slab.h>
 #include <asm/irq.h>
 
-#include <asm/arch/corgi.h>
+#include <asm/arch/sharpsl.h>
 #include <asm/arch/hardware.h>
 #include <asm/arch/pxa-regs.h>
 
@@ -47,15 +47,20 @@ struct corgi_ts {
         struct ts_event tc;
         int pendown;
         int power_mode;
+        int irq_gpio;
+        struct corgits_machinfo *machinfo;
 };
 
-#define STATUS_HSYNC            (GPLR(CORGI_GPIO_HSYNC) & GPIO_bit(CORGI_GPIO_HSYNC))
-
-#define SyncHS()        while((STATUS_HSYNC) == 0); while((STATUS_HSYNC) != 0);
+#ifdef CONFIG_PXA25x
 #define CCNT(a)         asm volatile ("mrc p14, 0, %0, C1, C0, 0" : "=r"(a))
 #define PMNC_GET(x)     asm volatile ("mrc p14, 0, %0, C0, C0, 0" : "=r"(x))
 #define PMNC_SET(x)     asm volatile ("mcr p14, 0, %0, C0, C0, 0" : : "r"(x))
-
+#endif
+#ifdef CONFIG_PXA27x
+#define CCNT(a)         asm volatile ("mrc p14, 0, %0, C1, C1, 0" : "=r"(a))
+#define PMNC_GET(x)     asm volatile ("mrc p14, 0, %0, C0, C1, 0" : "=r"(x))
+#define PMNC_SET(x)     asm volatile ("mcr p14, 0, %0, C0, C1, 0" : : "r"(x))
+#endif
 
 /* ADS7846 Touch Screen Controller bit definitions */
 #define ADSCTRL_PD0             (1u << 0)       /* PD0 */
@@ -66,12 +71,11 @@ struct corgi_ts {
 #define ADSCTRL_STS             (1u << 7)       /* Start Bit */
 
 /* External Functions */
-extern unsigned long w100fb_get_hsynclen(struct device *dev);
 extern unsigned int get_clk_frequency_khz(int info);
 
-static unsigned long calc_waittime(void)
+static unsigned long calc_waittime(struct corgi_ts *corgi_ts)
 {
-        unsigned long hsync_len = w100fb_get_hsynclen(&corgifb_device.dev);
+        unsigned long hsync_len = corgi_ts->machinfo->get_hsync_len();
 
         if (hsync_len)
                 return get_clk_frequency_khz(0)*1000/hsync_len;
@@ -79,7 +83,8 @@ static unsigned long calc_waittime(void)
                 return 0;
 }
 
-static int sync_receive_data_send_cmd(int doRecive, int doSend, unsigned int address, unsigned long wait_time)
+static int sync_receive_data_send_cmd(struct corgi_ts *corgi_ts, int doRecive, int doSend,
+                unsigned int address, unsigned long wait_time)
 {
         unsigned long timer1 = 0, timer2, pmnc = 0;
         int pos = 0;
@@ -90,7 +95,7 @@ static int sync_receive_data_send_cmd(int doRecive, int doSend, unsigned int add
                         PMNC_SET(0x01);
 
                 /* polling HSync */
-                SyncHS();
+                corgi_ts->machinfo->wait_hsync();
                 /* get CCNT */
                 CCNT(timer1);
         }
@@ -109,7 +114,7 @@ static int sync_receive_data_send_cmd(int doRecive, int doSend, unsigned int add
                         CCNT(timer2);
                         if (timer2-timer1 > wait_time) {
                                 /* too slow - timeout, try again */
-                                SyncHS();
+                                corgi_ts->machinfo->wait_hsync();
                                 /* get OSCR */
                                 CCNT(timer1);
                                 /* Wait after HSync */
@@ -133,23 +138,23 @@ static int read_xydata(struct corgi_ts *corgi_ts)