Packard Bell Vibe 500: touchpad code rework. Improve touch sensivity a bit by setting the MEP parameters in the power_init() function. Implement new function in synaptics-mep driver (touchpad_set_parameter) necessary for it. Move the button lights code to the target backlight file.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24541 a1c6a512-1295-4272-9138-f99709370657

firmware/drivers/synaptics-mep.c

@@ -580,6 +580,27 @@ int touchpad_read_device(char *data, int len)
     return val;
 }
 
+int touchpad_set_parameter(char par_nr, unsigned int param)
+{
+    char data[4];
+    int val=0;
+
+    if (syn_status)
+    {
+        syn_enable_int(false);
+
+        data[0]=0x03; /* header - addr:0,global:0,control:0,len:3 */
+        data[1]=0x40+par_nr; /* parameter number */
+        data[2]=(param >> 8) & 0xff; /* param_hi */
+        data[3]=param & 0xff;        /* param_lo */
+        syn_send(data,4);
+        val=syn_read(data,1); /* get the simple ACK = 0x18 */
+
+        syn_enable_int(true);
+    }
+    return val;
+}
+
 int touchpad_set_buttonlights(unsigned int led_mask, char brightness)
 {
     char data[6];
@@ -588,26 +609,7 @@ int touchpad_set_buttonlights(unsigned int led_mask, char brightness)
     if (syn_status)
     {
         syn_enable_int(false);
-#if defined(PBELL_VIBE500)
-        /* In Packard Bell Vibe 500 leds are controlled through the MEP parameters 0x62 - 0x63 
-           There is no 0x31 order - grup led control */
 
-        /* Make sure we have a led_block_mask = 0 - obtained experimentally */
-        data[0] = 0x03; /* header - addr:0,global:0,control:0,len:3 */
-        data[1] = 0x63; /* parameter nr: 0x23 (-0x40) - led_block_mask */
-        data[2] = 0x00; /* par_hi = 0 */
-        data[3] = 0x00; /* par_lo = 0 */
-        syn_send(data,4);
-        val = syn_read(data, 1); /* get the simple ACK = 0x18 */
-
-        /* Turn on/off the lights (there is no brightness control) - obtained experimentally */
-        data[0] = 0x03; /* header - addr:0,global:0,control:0,len:3 */
-        data[1] = 0x62; /* parameter nr: 0x22 (-0x40) - led_mask */
-        data[2] = 0x00; /* par_hi = 0 */
-        data[3] = (led_mask & 0x0f) | (brightness&0);  /* par_lo = led_mask */ 
-        syn_send(data,4);
-        val = syn_read(data, 1); /* get the simple ACK = 0x18 */
-#else
         /* turn on all touchpad leds */
         data[0] = 0x05;
         data[1] = 0x31;
@@ -619,7 +621,7 @@ int touchpad_set_buttonlights(unsigned int led_mask, char brightness)
 
         /* device responds with a single-byte ACK packet */
         val = syn_read(data, 2);
-#endif
+
         syn_enable_int(true);
     }
 

firmware/export/synaptics-mep.h

@@ -24,5 +24,6 @@
 int touchpad_init(void);
 int touchpad_read_device(char *data, int len);
 int touchpad_set_buttonlights(unsigned int led_mask, char brightness);
+int touchpad_set_parameter(char par_nr, unsigned int param);
 
 #endif

firmware/target/arm/pbell/vibe500/backlight-vibe500.c

@@ -64,7 +64,7 @@ void _buttonlight_on(void)
 {
     if (!buttonlight_status)
     {
-        touchpad_set_buttonlights(0x0f, 0);
+        touchpad_set_parameter(0x22, 0x000f); /* 0x22 - GPO_ENABLE */
         buttonlight_status = 1;
     }
 }
@@ -73,7 +73,7 @@ void _buttonlight_off(void)
 {
     if (buttonlight_status)
     {
-        touchpad_set_buttonlights(0x00, 0);
+        touchpad_set_parameter(0x22, 0x0000); /* 0x22 - GPO_ENABLE */
         buttonlight_status = 0;
     }
 }
@@ -81,7 +81,8 @@ void _buttonlight_off(void)
 void _buttonlight_set_brightness(int brightness)
 {
     /* no brightness control, but lights stays on - for compatibility */
-    touchpad_set_buttonlights(0x0f, brightness);
+    (void)brightness;
+    touchpad_set_parameter(0x22, 0x000f); /* 0x22 - GPO_ENABLE */
     buttonlight_status = 1;
 }
 #endif

firmware/target/arm/pbell/vibe500/power-vibe500.c

@@ -46,6 +46,18 @@ void power_init(void)
     {
         logf("touchpad not ready");
     }
+    /* Max touch sensivity = 0x77, Rate=80/s,NoFilter=0,
+       KeyMatrix=0,Buttons=1,Relative=0,Absolute=1.
+       MEP parameter 0x20 - Report Modes */
+    touchpad_set_parameter(0x20,0x7785);
+    /* MinAbsReporting=0, NotAllCapButtons=0,SingleCapButton=0,
+       50msDebounce=0,MotionReporting=1 (reduce transmission overhead),
+       ClipZifnoFinger=0,DisableDeceleration=0,Dribble=0.
+       MEP parameter 0x21 - Enhanced Operating Configuration */
+    touchpad_set_parameter(0x21,0x0008);
+    /* Set the GPO_LEVEL = 0 - for the button lights */
+    touchpad_set_parameter(0x23,0x0000);
+
     /* Sound unmute (on) */
     GPIO_CLEAR_BITWISE(GPIOL_OUTPUT_VAL, 0x10);
 }