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path: root/recipes/linux/openzaurus-pxa27x-2.4.20-rmk2-embedix20050602/P05-C3000-TSPRESSURE_041207.patch
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diff -Nur c3000_pre/linux/drivers/char/Config.in c3000_work/linux/drivers/char/Config.in
--- c3000_pre/linux/drivers/char/Config.in	2004-08-21 09:48:25.000000000 +0900
+++ c3000_work/linux/drivers/char/Config.in	2004-12-06 15:53:46.000000000 +0900
@@ -164,6 +164,8 @@
    if [ "$CONFIG_ARCH_SHARP_SL" = "y" ]; then
       bool '  SL-series serial port support' CONFIG_SERIAL_SL_SERIES
    fi
+   bool '  SL-series touchscreen pressure value read (EXPERIMENTAL)' CONFIG_SL_TS_PRESSURE
+   dep_bool '    Boot On touchscreen pressure value read' CONFIG_BOOT_PRESSURE_ON $CONFIG_SL_TS_PRESSURE
    if [ "$CONFIG_SERIAL_SL_SERIES" = "y" ]; then
       bool '   SL-series Bluetooth support' CONFIG_BLUETOOTH_SL
    fi
diff -Nur c3000_pre/linux/drivers/char/ads7846_ts.c c3000_work/linux/drivers/char/ads7846_ts.c
--- c3000_pre/linux/drivers/char/ads7846_ts.c	2004-11-16 15:31:06.000000000 +0900
+++ c3000_work/linux/drivers/char/ads7846_ts.c	2004-12-06 15:50:06.000000000 +0900
@@ -86,7 +86,55 @@
 static DECLARE_WAIT_QUEUE_HEAD(queue);
 static int head, tail, sample;
 static char pendown = 0;
-unsigned long Pressure;
+static unsigned long Pressure;
+#if defined(CONFIG_SL_TS_PRESSURE)
+#include <linux/proc_fs.h>
+#endif
+
+#if defined(CONFIG_SL_TS_PRESSURE)
+static unsigned long tsPressure;
+#if defined(CONFIG_BOOT_PRESSURE_ON)
+static unsigned int tspressure_mode = 1;
+#else
+static unsigned int tspressure_mode = 0;
+#endif
+
+static ssize_t tspressure_read_params(struct file *file, char *buf,
+				      size_t nbytes, loff_t *ppos)
+{
+	char outputbuf[32];
+	int count;
+
+	if (*ppos>0) /* Assume reading completed in previous read*/
+		return 0;
+	count = sprintf(outputbuf, "%d\n", (unsigned int)tspressure_mode);
+	count++;
+	*ppos += count;
+	if (count>nbytes)	/* Assume output can be read at one time */
+		return -EINVAL;
+	if (copy_to_user(buf, outputbuf, count+1))
+		return -EFAULT;
+	return count;
+}
+
+static ssize_t tspressure_write_params(struct file *file, const char *buf,
+				       size_t nbytes, loff_t *ppos)
+{
+	unsigned int param=0;
+
+	sscanf(buf,"%d",&param);
+	if (tspressure_mode != param) {
+		tspressure_mode = param;
+		printk("tspressure = %d\n", tspressure_mode);
+	}
+	return nbytes;
+}
+
+static struct file_operations proc_tspressure_operations = {
+  read:   tspressure_read_params,
+  write:  tspressure_write_params,
+};
+#endif
 #if defined(CONFIG_ARCH_PXA_CORGI)
 static char ispass = 1;
 #endif
@@ -370,7 +418,11 @@
 		((int)((x)-(y))<(int)(d)) && \
 		((int)((y)-(x))<(int)(d)) )
 	unsigned long cmd;
+#if defined(CONFIG_SL_TS_PRESSURE)
+	unsigned int t,x,y,z[2],z2,dummy;
+#else
 	unsigned int t,x,y,z[2];
+#endif
 	int i,j,k;
 	int d = 8, c = 10;
 	int err = 0;
@@ -381,7 +433,18 @@
 			(3u << ADSCTRL_ADR_SH) | (1u << ADSCTRL_STS_SH);
 		t = ads7846_rw(cmd);
 		z[i] = ads7846_rw(cmd);
- 
+
+#if defined(CONFIG_SL_TS_PRESSURE)
+		if (tspressure_mode) {
+			/* Z2 */
+			cmd = (1u << ADSCTRL_PD0_SH) | (1u << ADSCTRL_PD1_SH) |
+				(4u << ADSCTRL_ADR_SH) | (1u << ADSCTRL_STS_SH);
+			dummy = ads7846_rw(cmd);
+			udelay(1);
+			z2 = ads7846_rw(cmd);
+		}
+#endif
+
 		if( i ) break;
 
 		/* X-axis */
@@ -415,6 +478,10 @@
 		}
 	}
 	Pressure = 1;
+#if defined(CONFIG_SL_TS_PRESSURE)
+	if (tspressure_mode)
+		if (z[1]) tsPressure = (15000 - x * (z2 - z[1]) / z[1]) >> 4;
+#endif
 	for(i=0;i<2;i++){
 		if( !z[i] )
 			Pressure = 0;
@@ -528,12 +595,19 @@
 
 	//	printk("x=%d,y=%d\n",tp->xd,tp->yd);
 
-	if (z1 != 0)
+	if (z1 != 0) {
 		Pressure = Rx * (tp->xd) * ((10*z2/z1) - 1*10) >> 10;
-	else 
+#if defined(CONFIG_SL_TS_PRESSURE)
+		if (tspressure_mode)
+			tsPressure = (15000 - x[3] * (z2 - z1) / z1) >> 4;
+	}
+#endif
+	else
+#if defined(CONFIG_SL_TS_PRESSURE)
+		tsPressure = Pressure = 0;
+#else
 		Pressure = 0;
-
-
+#endif
         cmd =	(1u << ADSCTRL_PD0_SH) | (1u << ADSCTRL_PD1_SH) |
 		(4u << ADSCTRL_ADR_SH) | (1u << ADSCTRL_STS_SH);
 	/* Power-Down Enable */
@@ -612,11 +686,25 @@
 //	printk("fail %d\n", fail);
 
 	if (fail == TOUCH_PANEL_AVERAGE) {
+#if defined(CONFIG_SL_TS_PRESSURE)
+		tsPressure = Pressure = 0;
+#else
 		Pressure = 0;
+#endif
 //		printk("pen up\n");
 	}
 	else {
+#if defined(CONFIG_SL_TS_PRESSURE)
+		if (tspressure_mode) {
+			if (z1) {
+				tsPressure = Pressure = (15000 - x * (z2 - z1) / z1) >> 4;
+			} else
+				tsPressure = Pressure = 0;
+		} else
+			tsPressure = Pressure = 1;
+#else
 		Pressure = 1;
+#endif
 		tp->xd = tx / (TOUCH_PANEL_AVERAGE - fail);
 		tp->yd = ty / (TOUCH_PANEL_AVERAGE - fail);
 //		printk("pen position (%d,%d)\n", tx, ty);
@@ -788,7 +876,11 @@
 
 static void new_data(void)
 {
+#if !defined(CONFIG_ARCH_PXA_CORGI) && !defined(CONFIG_ARCH_PXA_POODLE)
+#if !defined(CONFIG_POODLE_TR0)
 	int diff0, diff1, diff2, diff3;
+#endif
+#endif
 
 #ifdef CONFIG_PM
 	if( PowerDownMode != PMPD_MODE_ACTIVE )
@@ -956,11 +1048,26 @@
 		lock_FCS(POWER_MODE_TOUCH, 1);	// not enter FCS mode.
 #endif
 		if( pos_dt.xd && pos_dt.yd && Pressure ) {
+#if defined(CONFIG_SL_TS_PRESSURE)
+			if (tspressure_mode)
+				tc.pressure = Pressure;
+			else
+				tc.pressure = 500;
+#else
 			tc.pressure = 500;
+#endif
+
 #else
 		if( pos_dt.xd && pos_dt.yd ){
+#if defined(CONFIG_SL_TS_PRESSURE)
+			if (tspressure_mode)
+				tc.pressure = Pressure;
+			else
+				tc.pressure = 1;
+#else
 			tc.pressure = 1;
 #endif
+#endif
 			before_data = tc;
 			pendown = 1;
 			new_data();
@@ -1005,6 +1112,16 @@
 static void ts_hardware_init(void)
 {
 	unsigned int dummy;
+
+#if defined(CONFIG_SL_TS_PRESSURE)
+	struct proc_dir_entry *tspressure_proc;
+#endif
+
+#if defined(CONFIG_SL_TS_PRESSURE)
+	tspressure_proc = create_proc_entry("zaurus/tspressure", 0, NULL);
+	if (tspressure_proc)
+		tspressure_proc->proc_fops = &proc_tspressure_operations;
+#endif
 	
 #if defined(CONFIG_ARCH_PXA_POODLE) || defined(CONFIG_ARCH_PXA_CORGI)
 	pxa_ssp_init();
@@ -1283,6 +1400,13 @@
 	case 17:         /* Clear all buffer data */
 	    print_par();
 	    break;
+#if defined(CONFIG_SL_TS_PRESSURE)
+	case 64:	/* read Pressure */
+	    if (tspressure_mode) {
+		    copy_to_user((void *)arg, &tsPressure, sizeof(tsPressure));
+		    break;
+	    }
+#endif
 	default:
 		return -EINVAL;
 	}