Backlight brightness and button lights for the Philips HDD1630

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20035 a1c6a512-1295-4272-9138-f99709370657

firmware/drivers/synaptics-mep.c

@@ -33,6 +33,9 @@
    Protocol: 3-Wire Interface Specification" documentation */
 
 #if defined(MROBE_100)
+#define INT_ENABLE  GPIOD_INT_LEV &= ~0x2; GPIOD_INT_EN  |= 0x2
+#define INT_DISABLE GPIOD_INT_EN  &= ~0x2; GPIOD_INT_CLR |= 0x2
+
 #define ACK     (GPIOD_INPUT_VAL & 0x1)
 #define ACK_HI  GPIOD_OUTPUT_VAL |=  0x1
 #define ACK_LO  GPIOD_OUTPUT_VAL &= ~0x1
@@ -47,6 +50,9 @@
 #define DATA_CL GPIOD_OUTPUT_EN &= ~0x4
 
 #elif defined(PHILIPS_HDD1630)
+#define INT_ENABLE  GPIOA_INT_LEV &= ~0x20; GPIOA_INT_EN  |= 0x20
+#define INT_DISABLE GPIOA_INT_EN  &= ~0x20; GPIOA_INT_CLR |= 0x20
+
 #define ACK     (GPIOD_INPUT_VAL & 0x80)
 #define ACK_HI  GPIOD_OUTPUT_VAL |=  0x80
 #define ACK_LO  GPIOD_OUTPUT_VAL &= ~0x80
@@ -73,6 +79,8 @@
 #define MEP_READ  0x1
 #define MEP_WRITE 0x3
 
+static unsigned short syn_status = 0;
+
 static int syn_wait_clk_change(unsigned int val)
 {
     int i;
@@ -140,12 +148,12 @@ static void syn_flush(void)
     syn_wait_guest_flush();
 }
 
-static int syn_send_data(int *data, int len)
+int syn_send(int *data, int len)
 {
     int i, bit;
     int parity = 0;
 
-    logf("syn_send_data...");
+    logf("syn_send...");
 
     /* 1. Lower DATA line to issue a request-to-send to guest */
     DATA_LO;
@@ -380,7 +388,7 @@ static int syn_read_data(int *data, int data_len)
     return len;
 }
 
-int syn_read_device(int *data, int len)
+int syn_read(int *data, int len)
 {
     int i;
     int ret = READ_ERROR;
@@ -406,7 +414,7 @@ int syn_read_device(int *data, int len)
     return ret;
 }
 
-static int syn_reset(void)
+int syn_reset(void)
 {
     int val, id;
     int data[2];
@@ -415,9 +423,9 @@ static int syn_reset(void)
 
     /* reset module 0 */
     val = (0 << 4) | (1 << 3) | 0;
-    syn_send_data(&val, 1);
+    syn_send(&val, 1);
 
-    val = syn_read_device(data, 2);
+    val = syn_read(data, 2);
     if (val == 1)
     {
         val = data[0] & 0xff;      /* packet header */
@@ -436,7 +444,35 @@ static int syn_reset(void)
 int syn_init(void)
 {
     syn_flush();
-    return syn_reset();
+    syn_status = syn_reset();
+
+    if (syn_status)
+    {
+        INT_DISABLE;
+        INT_ENABLE;
+
+        CPU_INT_EN    |= HI_MASK;
+        CPU_HI_INT_EN |= GPIO0_MASK;
+    }
+
+    return syn_status;
+}
+
+int syn_get_status(void)
+{
+    return syn_status;
+}
+
+void syn_int_enable(bool enable)
+{
+    if (enable)
+    {
+        INT_ENABLE;
+    }
+    else
+    {
+        INT_DISABLE;
+    }
 }
 
 #ifdef ROCKBOX_HAS_LOGF
@@ -451,8 +487,8 @@ void syn_info(void)
     logf("module base info:");
     data[0] = MEP_READ;
     data[1] = 0x80;
-    syn_send_data(data, 2);
+    syn_send(data, 2);
-    val = syn_read_device(data, 8);
+    val = syn_read(data, 8);
     if (val > 0)
     {
         for (i = 0; i < 8; i++)
@@ -463,8 +499,8 @@ void syn_info(void)
     logf("module product info:");
     data[0] = MEP_READ;
     data[1] = 0x81;
-    syn_send_data(data, 2);
+    syn_send(data, 2);
-    val = syn_read_device(data, 8);
+    val = syn_read(data, 8);
     if (val > 0)
     {
         for (i = 0; i < 8; i++)
@@ -475,8 +511,8 @@ void syn_info(void)
     logf("module serialization:");
     data[0] = MEP_READ;
     data[1] = 0x82;
-    syn_send_data(data, 2);
+    syn_send(data, 2);
-    val = syn_read_device(data, 8);
+    val = syn_read(data, 8);
     if (val > 0)
     {
         for (i = 0; i < 8; i++)
@@ -487,8 +523,8 @@ void syn_info(void)
     logf("1-d sensor info:");
     data[0] = MEP_READ;
     data[1] = 0x80 + 0x20;
-    syn_send_data(data, 2);
+    syn_send(data, 2);
-    val = syn_read_device(data, 8);
+    val = syn_read(data, 8);
     if (val > 0)
     {
         for (i = 0; i < 8; i++)

firmware/export/config-hdd1630.h

@@ -108,15 +108,17 @@
 
 /* Define this for LCD backlight available */
 #define HAVE_BACKLIGHT
-/* #define HAVE_BACKLIGHT_BRIGHTNESS */
+#define HAVE_BACKLIGHT_BRIGHTNESS
+/* #define CONFIG_BACKLIGHT_FADING     BACKLIGHT_FADING_SW_SETTING */
 
 /* Main LCD backlight brightness range and defaults */
 #define MIN_BRIGHTNESS_SETTING      1
-#define MAX_BRIGHTNESS_SETTING     12
+#define MAX_BRIGHTNESS_SETTING     16
-#define DEFAULT_BRIGHTNESS_SETTING  6
+#define DEFAULT_BRIGHTNESS_SETTING 13 /* match OF brightness */
 
 /* define this if you have a light associated with the buttons */
-/* #define HAVE_BUTTON_LIGHT */
+#define HAVE_BUTTON_LIGHT
+#define HAVE_BUTTONLIGHT_BRIGHTNESS
 
 #define BATTERY_CAPACITY_DEFAULT 630 /* default battery capacity */
 #define BATTERY_CAPACITY_MIN     630 /* min. capacity selectable */

firmware/export/synaptics-mep.h

@@ -18,10 +18,13 @@
  * KIND, either express or implied.
  *
  ****************************************************************************/
+#ifndef SYNAPTICS_MEP_H
+#define SYNAPTICS_MEP_H
 
-int syn_init(void);
+int  syn_init(void);
-int syn_read_device(int *data, int len);
+int  syn_get_status(void);
+void syn_int_enable(bool enable);
+int  syn_read(int *data, int len);
+int  syn_send(int *data, int len);
 
-#ifdef ROCKBOX_HAS_LOGF
-void syn_info(void);
 #endif

firmware/target/arm/olympus/mrobe-100/button-mr100.c

@@ -35,8 +35,6 @@
 static int int_btn = BUTTON_NONE;
 
 #ifndef BOOTLOADER
-static int syn_status = 0;
-
 void button_init_device(void)
 {
     /* enable touchpad leds */
@@ -58,21 +56,9 @@ void button_init_device(void)
     GPIOD_OUTPUT_EN  |=  0x4; /* DATA */
     GPIOD_OUTPUT_VAL |=  0x4; /* high */
 
-    if (syn_init())
+    if (!syn_init())
     {
-#ifdef ROCKBOX_HAS_LOGF
+        logf("button_init_dev: touchpad not ready");
-        syn_info();
-#endif
-
-        syn_status = 1;
-
-        /* enable interrupts */
-        GPIOD_INT_LEV &= ~0x2;
-        GPIOD_INT_CLR |=  0x2;
-        GPIOD_INT_EN  |=  0x2;
-
-        CPU_INT_EN    |= HI_MASK;
-        CPU_HI_INT_EN |= GPIO0_MASK;
     }
 }
 
@@ -86,13 +72,12 @@ void button_int(void)
 
     int_btn = BUTTON_NONE;
 
-    if (syn_status)
+    if (syn_get_status())
     {
         /* disable interrupt while we read the touchpad */
-        GPIOD_INT_EN  &= ~0x2;
+        syn_int_enable(false);
-        GPIOD_INT_CLR |=  0x2;
 
-        val = syn_read_device(data, 4);
+        val = syn_read(data, 4);
         if (val > 0)
         {
             val = data[0] & 0xff;      /* packet header */
@@ -119,7 +104,7 @@ void button_int(void)
                     int_btn |= BUTTON_RIGHT;
 
                 /* An Absolute packet should follow which we ignore */
-                val = syn_read_device(data, 4);
+                val = syn_read(data, 4);
 
                 logf("  int_btn = 0x%04x", int_btn);
             }
@@ -148,8 +133,7 @@ void button_int(void)
         }
 
         /* re-enable interrupts */
-        GPIOD_INT_LEV &= ~0x2;
+        syn_int_enable(true);
-        GPIOD_INT_EN  |=  0x2;
     }
 }
 #else

firmware/target/arm/philips/hdd1630/backlight-hdd1630.c

@@ -21,35 +21,84 @@
 #include "config.h"
 #include "backlight-target.h"
 #include "system.h"
-#include "lcd.h"
 #include "backlight.h"
+#include "synaptics-mep.h"
 
 #ifdef HAVE_BACKLIGHT_BRIGHTNESS
-static unsigned short backlight_brightness = DEFAULT_BRIGHTNESS_SETTING;
+static const int brightness_vals[16] =
+                {255,237,219,201,183,165,147,130,112,94,76,58,40,22,5,0};
 
 void _backlight_set_brightness(int brightness)
 {
+    outl(0x80000000 | (brightness_vals[brightness-1] << 16), 0x7000a000);
 }
 #endif
 
 void _backlight_on(void)
 {
-    GPO32_VAL &= ~0x1000000;
+    GPO32_VAL    &= ~0x1000000;
     GPO32_ENABLE &= ~0x1000000;
 }
 
 void _backlight_off(void)
 {
-    GPO32_VAL |= 0x1000000;
+    GPO32_VAL    |= 0x1000000;
     GPO32_ENABLE |= 0x1000000;
 }
 
 #ifdef HAVE_BUTTON_LIGHT
-void _buttonlight_on(void)
+
+#define BUTTONLIGHT_MASK 0x7f
+
+static unsigned short buttonight_brightness = DEFAULT_BRIGHTNESS_SETTING - 1;
+static unsigned short buttonlight_status = 0;
+
+static void set_buttonlight(int brightness)
 {
+    int data[6];
+
+    if (syn_get_status())
+    {
+        syn_int_enable(false);
+
+        /* turn on all touchpad leds */
+        data[0] = 0x05;
+        data[1] = 0x31;
+        data[2] = (brightness & 0xff) << 4;
+        data[3] = 0x00;
+        data[4] = 0x00;
+        data[5] = BUTTONLIGHT_MASK;
+        syn_send(data, 6);
+
+        /* device responds with a single-byte ACK packet */
+        syn_read(data, 2);
+
+        syn_int_enable(true);
+    }
 }
 
+void _buttonlight_on(void)
+{
+    if (!buttonlight_status)
+    {
+        set_buttonlight(buttonight_brightness);
+        buttonlight_status = 1;
+    }
+}
+ 
 void _buttonlight_off(void)
 {
+    if (buttonlight_status)
+    {
+        set_buttonlight(0);
+        buttonlight_status = 0;
+    }
+}
+
+void _buttonlight_set_brightness(int brightness)
+{
+    buttonight_brightness = brightness - 1;
+    set_buttonlight(buttonight_brightness);
+    buttonlight_status = 1;
 }
 #endif

firmware/target/arm/philips/hdd1630/backlight-target.h

@@ -24,7 +24,6 @@
 #define _backlight_init() true
 void _backlight_on(void);
 void _backlight_off(void);
-int  __backlight_is_on(void);
 
 #ifdef HAVE_BACKLIGHT_BRIGHTNESS
 void _backlight_set_brightness(int brightness);
@@ -33,6 +32,7 @@ void _backlight_set_brightness(int brightness);
 #ifdef HAVE_BUTTON_LIGHT
 void _buttonlight_on(void);
 void _buttonlight_off(void);
+void _buttonlight_set_brightness(int brightness);
 #endif
 
 #endif

firmware/target/arm/philips/hdd1630/button-hdd1630.c

@@ -46,41 +46,11 @@ void button_click(void)
 }
 
 #ifndef BOOTLOADER
-static int syn_status = 0;
-
 void button_init_device(void)
 {
-    /* enable touchpad */
+    if (!syn_get_status())
-    GPO32_ENABLE     |=  0x80;
-    GPO32_VAL        &= ~0x80;
-    udelay(1000);
-
-    /* enable ACK, CLK, DATA lines */
-    GPIOD_ENABLE |= 0x80;
-    GPIOA_ENABLE |= (0x10 | 0x20);
-
-    GPIOD_OUTPUT_EN  |=  0x80; /* ACK  */
-    GPIOD_OUTPUT_VAL |=  0x80; /* high */
-
-    GPIOA_OUTPUT_EN  &= ~0x20; /* CLK  */
-    
-    GPIOA_OUTPUT_EN  |=  0x10; /* DATA */
-    GPIOA_OUTPUT_VAL |=  0x10; /* high */
-
-    if (syn_init())
     {
-#ifdef ROCKBOX_HAS_LOGF
+        logf("button_init_dev: touchpad not ready");
-        syn_info();
-#endif
-        syn_status = 1;
-
-        /* enable interrupts */
-        GPIOA_INT_LEV &= ~0x20;
-        GPIOA_INT_CLR |=  0x20;
-        GPIOA_INT_EN  |=  0x20;
-
-        CPU_INT_EN    |= HI_MASK;
-        CPU_HI_INT_EN |= GPIO0_MASK;
     }
 }
 
@@ -94,19 +64,18 @@ void button_int(void)
 
     int_btn = BUTTON_NONE;
 
-    if (syn_status)
+    if (syn_get_status())
     {
         /* disable interrupt while we read the touchpad */
-        GPIOA_INT_EN  &= ~0x20;
+        syn_int_enable(false);
-        GPIOA_INT_CLR |=  0x20;
 
-        val = syn_read_device(data, 4);
+        val = syn_read(data, 4);
         if (val > 0)
         {
             val = data[0] & 0xff;      /* packet header */
             id = (data[1] >> 4) & 0xf; /* packet id */
 
-            logf("button_read_device...");
+            logf("syn_read:");
             logf("  data[0] = 0x%08x", data[0]);
             logf("  data[1] = 0x%08x", data[1]);
             logf("  data[2] = 0x%08x", data[2]);
@@ -121,7 +90,7 @@ void button_int(void)
                     int_btn |= BUTTON_RIGHT;
 
                 /* An Absolute packet should follow which we ignore */
-                val = syn_read_device(data, 4);
+                val = syn_read(data, 4);
                 logf("  int_btn = 0x%04x", int_btn);
             }
             else if (val == MEP_ABSOLUTE_HEADER)
@@ -149,8 +118,7 @@ void button_int(void)
         }
 
         /* re-enable interrupts */
-        GPIOA_INT_LEV &= ~0x20;
+        syn_int_enable(true);
-        GPIOA_INT_EN  |=  0x20;
     }
 }
 #else

firmware/target/arm/philips/hdd1630/power-hdd1630.c

@@ -28,6 +28,7 @@
 #include "power.h"
 #include "logf.h"
 #include "usb.h"
+#include "synaptics-mep.h"
 
 void power_init(void)
 {
@@ -46,6 +47,27 @@ void power_init(void)
     GPIOE_OUTPUT_EN |= 0x40;
     GPIOE_OUTPUT_VAL &= ~0x40; /* off */
 #endif
+
+#ifndef BOOTLOADER
+    /* enable touchpad here because we need it for
+       both buttons and button lights */
+    GPO32_ENABLE     |=  0x80;
+    GPO32_VAL        &= ~0x80;
+    udelay(1000);
+
+    GPIOD_ENABLE |= 0x80;          /* enable ACK */
+    GPIOA_ENABLE |= (0x10 | 0x20); /* enable DATA, CLK */
+
+    GPIOD_OUTPUT_EN  |=  0x80; /* set ACK */
+    GPIOD_OUTPUT_VAL |=  0x80; /*    high */
+
+    GPIOA_OUTPUT_EN  &= ~0x20; /* CLK */
+    
+    GPIOA_OUTPUT_EN  |=  0x10; /* set DATA */
+    GPIOA_OUTPUT_VAL |=  0x10; /*     high */
+
+    syn_init();
+#endif
 }
 
 unsigned int power_input_status(void)
@@ -70,7 +92,6 @@ void ide_power_enable(bool on)
     /* We do nothing */
 }
 
-
 bool ide_powered(void)
 {
     /* pretend we are always powered - we don't turn it off */