Implemented iPod Nano 2G power_off()

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23014 a1c6a512-1295-4272-9138-f99709370657

firmware/target/arm/s5l8700/ipodnano2g/lcd-nano2g.c

@@ -35,6 +35,10 @@
 /* LCD type 0 register defines */
 
 #define R_ENTRY_MODE              0x03
+#define R_DISPLAY_CONTROL_1       0x07
+#define R_POWER_CONTROL_1         0x10
+#define R_POWER_CONTROL_2         0x12
+#define R_POWER_CONTROL_3         0x13
 #define R_HORIZ_GRAM_ADDR_SET     0x20
 #define R_VERT_GRAM_ADDR_SET      0x21
 #define R_WRITE_DATA_TO_GRAM      0x22
@@ -46,6 +50,8 @@
 
 /* LCD type 1 register defines */
 
+#define R_SLEEP_IN                0x10
+#define R_DISPLAY_OFF             0x28
 #define R_COLUMN_ADDR_SET         0x2a
 #define R_ROW_ADDR_SET            0x2b
 #define R_MEMORY_WRITE            0x2c
@@ -122,6 +128,27 @@ void lcd_set_flip(bool yesno)
 
 void lcd_off(void)
 {
+    if (lcd_type == 0)
+    {
+        s5l_lcd_write_cmd_data(R_DISPLAY_CONTROL_1, 0x232);
+        s5l_lcd_write_cmd_data(R_POWER_CONTROL_3, 0x1137); 
+        s5l_lcd_write_cmd_data(R_DISPLAY_CONTROL_1, 0x201);
+        s5l_lcd_write_cmd_data(R_POWER_CONTROL_3, 0x137);
+        s5l_lcd_write_cmd_data(R_DISPLAY_CONTROL_1, 0x200);
+        s5l_lcd_write_cmd_data(R_POWER_CONTROL_1, 0x680);
+        s5l_lcd_write_cmd_data(R_POWER_CONTROL_2, 0x160);
+        s5l_lcd_write_cmd_data(R_POWER_CONTROL_3, 0x127);
+        s5l_lcd_write_cmd_data(R_POWER_CONTROL_1, 0x600);
+    }
+    else
+    {
+        s5l_lcd_write_cmd(R_DISPLAY_OFF);
+        s5l_lcd_write_data(0);
+        s5l_lcd_write_data(0);
+        s5l_lcd_write_cmd(R_SLEEP_IN);
+        s5l_lcd_write_data(0);
+        s5l_lcd_write_data(0);
+    }
 }
 
 void lcd_on(void)

firmware/target/arm/s5l8700/ipodnano2g/pmu-nano2g.c

@@ -24,21 +24,7 @@
 #include "i2c-s5l8700.h"
 
 static struct mutex pmu_adc_mutex;
-int pmu_initialized;
+int pmu_initialized = 0;
-
-unsigned char pmu_read(int address)
-{
-    unsigned char tmp;
-
-    i2c_read(0xe6, address, 1, &tmp);
-
-    return tmp;
-}
-
-void pmu_write(int address, unsigned char val)
-{
-    i2c_write(0xe6, address, 1, &val);
-}
 
 void pmu_read_multiple(int address, int count, unsigned char* buffer)
 {
@@ -50,6 +36,20 @@ void pmu_write_multiple(int address, int count, unsigned char* buffer)
     i2c_write(0xe6, address, count, buffer);
 }
 
+unsigned char pmu_read(int address)
+{
+    unsigned char tmp;
+
+    pmu_read_multiple(address, 1, &tmp);
+
+    return tmp;
+}
+
+void pmu_write(int address, unsigned char val)
+{
+    pmu_write_multiple(address, 1, &val);
+}
+
 void pmu_init(void)
 {
     if (pmu_initialized) return;
@@ -88,3 +88,19 @@ int pmu_read_battery_current(void)
     mutex_unlock(&pmu_adc_mutex);
     return milliamps;
 }
+
+void pmu_switch_power(int gate, int onoff)
+{
+    if (gate < 4)
+    {
+        unsigned char newval = pmu_read(0x3B) & ~(1 << (2 * gate));
+        if (onoff) newval |= 1 << (2 * gate);
+        pmu_write(0x3B, newval);
+    }
+    else if (gate < 7)
+    {
+        unsigned char newval = pmu_read(0x3C) & ~(1 << (2 * (gate - 4)));
+        if (onoff) newval |= 1 << (2 * (gate - 4));
+        pmu_write(0x3C, newval);
+    }
+}

firmware/target/arm/s5l8700/ipodnano2g/pmu-target.h

@@ -31,5 +31,6 @@ void pmu_write_multiple(int address, int count, unsigned char* buffer);
 int pmu_read_battery_voltage(void);
 int pmu_read_battery_current(void);
 void pmu_init(void);
+void pmu_switch_power(int gate, int onoff);
 
 #endif

firmware/target/arm/s5l8700/ipodnano2g/power-nano2g.c

@@ -26,20 +26,32 @@
 #include "ftl-target.h"
 #include <string.h>
 #include "panic.h"
+#include "pmu-target.h"
+#include "lcd.h"
 
 
-/*  Power handling for S5L8700 based Meizu players
-
-    The M3 and M6 players appear to use the same pins for power, USB detection
-    and charging status.
-*/
-
 void power_off(void)
 {
     if (ftl_sync() != 0) panicf("Failed to unmount flash!");
 
-    /* TODO: Really power-off */
+    pmu_write(0x2b, 0);  /* Kill the backlight, instantly. */
-    panicf("Poweroff not implemented yet.");
+    pmu_write(0x29, 0);
+
+    lcd_off();
+
+    pmu_switch_power(0, 0);
+    pmu_switch_power(2, 0);
+    pmu_switch_power(3, 0);
+    pmu_switch_power(4, 0);
+    pmu_switch_power(6, 0);
+    pmu_switch_power(7, 0);
+
+    pmu_write(0x36, pmu_read(0x36) & 0xF0);
+    pmu_write(0x34, pmu_read(0x34) & 0xF0);
+    pmu_write(0xD, pmu_read(0xD) | 0x40);
+    pmu_write(0xD, pmu_read(0xD) | 0x02);
+    pmu_write(0xC, 1);
+
     while(1);
 }