1 files changed, 102 insertions, 0 deletions
diff --git a/recipes/linux/opensimpad/simpad-backlight-if.patch b/recipes/linux/opensimpad/simpad-backlight-if.patch
new file mode 100644
index 0000000000..4e04afb5e9
--- /dev/null
+++ b/recipes/linux/opensimpad/simpad-backlight-if.patch
@@ -0,0 +1,102 @@
+
+#
+# Patch managed by http://www.holgerschurig.de/patcher.html
+#
+
+--- linux-2.4.27/drivers/video/mq200fb.c~simpad-backlight-if
++++ linux-2.4.27/drivers/video/mq200fb.c
+@@ -82,6 +82,20 @@
+ 	write:	proc_write_reg
+ };
+ 
++#ifdef CONFIG_SA1100_SIMPAD
++
++static ssize_t proc_read_light(struct file * file, char * buf,
++		size_t nbytes, loff_t *ppos);
++static ssize_t proc_write_light(struct file * file, const char * buffer,
++		size_t count, loff_t *ppos);
++
++static struct file_operations proc_light_operations = {
++	read:	proc_read_light,
++	write:	proc_write_light
++};
++#endif
++
++
+ typedef struct sa1110_reg_entry {
+ 	u32 phyaddr;
+ 	char* name;
+@@ -622,6 +636,20 @@
+        }
+     }
+ 
++#ifdef CONFIG_SA1100_SIMPAD
++	entry = create_proc_entry("backlight",
++				 S_IRWXU | S_IRWXG | S_IRWXO,
++				 mq200dir);
++	if(entry) {
++	  entry->proc_fops = &proc_light_operations;
++	} 
++    else {
++	  printk( KERN_ERR
++		  "mq200fb: can't create /proc/" MQ200_DIRNAME
++		  "/backlight\n");
++	  return(-ENOMEM);
++    }
++ #endif
+ 
+ #ifdef MQ_SA1110
+ 
+@@ -1879,7 +1907,7 @@
+ static void writeBrightness(void *pMQMMIO, int brightness)
+ {
+     unsigned long dutyCycle, pwmcontrol;
+-    int MAX_BRIGHT_REG = 0x000000fc; /* int 254 */
++    int MAX_BRIGHT_REG = 0x000000fe; /* int 254 */
+     
+     if(brightness > MAX_BRIGHT_REG)
+       return;
+@@ -1961,3 +1989,43 @@
+ 	return (count+endp-buffer);
+ }
+ 
++#ifdef CONFIG_SA1100_SIMPAD
++
++#define SIMPAD_BACKLIGHT_MASK	0x00a10044
++
++static int proc_read_light(struct file * file, char * buf,
++		size_t nbytes, loff_t *ppos)
++{
++	char outputbuf[15];
++	int count;
++	u32 pwmctl;
++	if (*ppos>0) /* Assume reading completed in previous read*/
++		return 0;
++
++	pwmctl = *((volatile *) mq200_p2v(0x4be0e03c));
++	pwmctl &= ~SIMPAD_BACKLIGHT_MASK;
++	pwmctl = pwmctl >> 8;	
++	pwmctl = 254 - pwmctl;
++		
++	count = sprintf(outputbuf, "%d\n",pwmctl);
++	*ppos+=count;
++	if (count>nbytes)  /* Assume output can be read at one time */
++		return -EINVAL;
++	if (copy_to_user(buf, outputbuf, count))
++		return -EFAULT;
++	return count;
++}
++
++static ssize_t proc_write_light(struct file * file, const char * buffer,
++		size_t count, loff_t *ppos)
++{
++	void * pMQMMIO = (void *) mqMmioAddr;
++	char *endp;
++	unsigned long newvalue = simple_strtoul(buffer,&endp,0);
++	if (newvalue > 254)
++		newvalue = 254;
++	writeBrightness(pMQMMIO,newvalue);
++	mq200_backlight(pMQMMIO,(int)newvalue);
++	return (count+endp-buffer);
++}
++#endif