H300/X5: Moved backlight brightness code to target tree. Created __backlight_set_brightness in backlight-(target).c. backlight_set_brightness range clamps and calls the backlight driver.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11488 a1c6a512-1295-4272-9138-f99709370657

7 files changed, 42 insertions, 23 deletions

diff --git a/firmware/backlight.c b/firmware/backlight.c
index 7b499f2..e1d9258 100644
--- a/firmware/backlight.c
+++ b/firmware/backlight.c
@@ -813,35 +813,18 @@ bool is_remote_backlight_on(void) {return true;}
 #endif
 #endif /* defined(CONFIG_BACKLIGHT) && !defined(BOOTLOADER) */
 
-/* TODO: Move low level code to target/ tree. Create
-   __backlight_set_brightness and call from here. */
 #ifdef HAVE_BACKLIGHT_BRIGHTNESS
-#if defined(IRIVER_H300_SERIES) || defined(IAUDIO_X5)
 void backlight_set_brightness(int val)
 {
 #ifndef SIMULATOR
-    /* set brightness by changing the PWM
-     * accepts 0..15 but note that 0 and 1 give a black display on H300!
-     * 0 is black on the X5.
-     */
+    if (val < MIN_BRIGHTNESS_SETTING)
+        val = MIN_BRIGHTNESS_SETTING;
+    else if (val > MAX_BRIGHTNESS_SETTING)
+        val = MAX_BRIGHTNESS_SETTING;
 
-    /* disable IRQs while bitbanging */
-    int old_irq_level = set_irq_level(HIGHEST_IRQ_LEVEL);
-
-    /* Clamp setting to range */
-    if(val<MIN_BRIGHTNESS_SETTING)
-        val=MIN_BRIGHTNESS_SETTING;
-    else if(val>MAX_BRIGHTNESS_SETTING)
-        val=MAX_BRIGHTNESS_SETTING;
-
-    pcf50606_write(0x35, (val << 1) | 0x01); /* 512Hz, Enable PWM */
-
-    /* enable IRQs again */
-    set_irq_level(old_irq_level);
+    __backlight_set_brightness(val);
 #else
-    val=0;
+    (void)val;
 #endif
 }
-#endif
 #endif /* HAVE_BACKLIGHT_BRIGHTNESS */
-
diff --git a/firmware/export/config-h300.h b/firmware/export/config-h300.h
index 748635d..14034c6 100644
--- a/firmware/export/config-h300.h
+++ b/firmware/export/config-h300.h
@@ -156,6 +156,12 @@
 #define MAX_CONTRAST_SETTING        63
 #define DEFAULT_CONTRAST_SETTING    40
 
+/* Main LCD backlight brightness range and defaults */
+/* accepts 0..15 but note that 0 and 1 give a black display on H300! */
+#define MIN_BRIGHTNESS_SETTING      2  /*  2/16 (12.50%) */
+#define MAX_BRIGHTNESS_SETTING      15 /* 15/16 (93.75%) */
+#define DEFAULT_BRIGHTNESS_SETTING  9  /*  9/16 (56.25%) */
+
 /* Remote LCD contrast range and defaults */
 #define MIN_REMOTE_CONTRAST_SETTING     MIN_CONTRAST_SETTING
 #define MAX_REMOTE_CONTRAST_SETTING     MAX_CONTRAST_SETTING
diff --git a/firmware/export/config-iaudiox5.h b/firmware/export/config-iaudiox5.h
index ddcac0e..d45f58f 100644
--- a/firmware/export/config-iaudiox5.h
+++ b/firmware/export/config-iaudiox5.h
@@ -72,6 +72,12 @@
 #define MAX_REMOTE_CONTRAST_SETTING     35
 #define DEFAULT_REMOTE_CONTRAST_SETTING 24 /* Match boot contrast */
 
+/* Main LCD backlight brightness range and defaults */
+/* PCF50506 can output 0%-100% duty cycle but D305A expects %15-100%. */
+#define MIN_BRIGHTNESS_SETTING      1  /* 15/16 (93.75%) */
+#define MAX_BRIGHTNESS_SETTING      13 /*  3/16 (18.75%) */
+#define DEFAULT_BRIGHTNESS_SETTING  8  /*  8/16 (50.00%) = x5 boot default */
+
 /* Define this for LCD backlight available */
 #define CONFIG_BACKLIGHT BL_X5 /* PCF50606 I2C */
 #define HAVE_BACKLIGHT_BRIGHTNESS
diff --git a/firmware/target/coldfire/iaudio/x5/backlight-target.h b/firmware/target/coldfire/iaudio/x5/backlight-target.h
index 262650a..e982e65 100755
--- a/firmware/target/coldfire/iaudio/x5/backlight-target.h
+++ b/firmware/target/coldfire/iaudio/x5/backlight-target.h
@@ -21,6 +21,7 @@
 
 void __backlight_on(void);
 void __backlight_off(void);
+void __backlight_set_brightness(int val);
 void __remote_backlight_on(void);
 void __remote_backlight_off(void);
 
diff --git a/firmware/target/coldfire/iaudio/x5/backlight-x5.c b/firmware/target/coldfire/iaudio/x5/backlight-x5.c
index 70a5d95..9d02c35 100755
--- a/firmware/target/coldfire/iaudio/x5/backlight-x5.c
+++ b/firmware/target/coldfire/iaudio/x5/backlight-x5.c
@@ -40,6 +40,16 @@ void __backlight_off(void)
     lcd_enable(false);
 }
 
+/* set brightness by changing the PWM */
+void __backlight_set_brightness(int val)
+{
+    /* disable IRQs while bitbanging */
+    int old_irq_level = set_irq_level(HIGHEST_IRQ_LEVEL);
+    pcf50606_write(0x35, (val << 1) | 0x01); /* 512Hz, Enable PWM */
+    /* enable IRQs again */
+    set_irq_level(old_irq_level);
+}
+
 void __remote_backlight_on(void)
 {
     and_l(~0x00200000, &GPIO_OUT);
diff --git a/firmware/target/coldfire/iriver/backlight-target.h b/firmware/target/coldfire/iriver/backlight-target.h
index 262650a..086ab02 100644
--- a/firmware/target/coldfire/iriver/backlight-target.h
+++ b/firmware/target/coldfire/iriver/backlight-target.h
@@ -21,6 +21,9 @@
 
 void __backlight_on(void);
 void __backlight_off(void);
+#ifdef HAVE_BACKLIGHT_BRIGHTNESS
+void __backlight_set_brightness(int val);
+#endif
 void __remote_backlight_on(void);
 void __remote_backlight_off(void);
 
diff --git a/firmware/target/coldfire/iriver/h300/backlight-h300.c b/firmware/target/coldfire/iriver/h300/backlight-h300.c
index d5322c2..50bd757 100644
--- a/firmware/target/coldfire/iriver/h300/backlight-h300.c
+++ b/firmware/target/coldfire/iriver/h300/backlight-h300.c
@@ -38,6 +38,16 @@ void __backlight_off(void)
     lcd_enable(false);
 }
 
+/* set brightness by changing the PWM */
+void __backlight_set_brightness(int val)
+{
+    /* disable IRQs while bitbanging */
+    int old_irq_level = set_irq_level(HIGHEST_IRQ_LEVEL);
+    pcf50606_write(0x35, (val << 1) | 0x01); /* 512Hz, Enable PWM */
+    /* enable IRQs again */
+    set_irq_level(old_irq_level);
+}
+
 void __remote_backlight_on(void)
 {
     and_l(~0x00000002, &GPIO1_OUT);