From 4ba9eac8941fb5340ac5be09df37ee699bceaf64 Mon Sep 17 00:00:00 2001
From: Dave Chapman <dave@dchapman.com>
Date: Wed, 21 Dec 2005 23:32:19 +0000
Subject: Put the ipod into standby mode on shutdown.  This is untested on the
 5g, but should work...

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8275 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/drivers/pcf50605.c | 47 ++++++++++++++++++++++++++++++++++++++++++---
 firmware/drivers/power.c    |  4 +++-
 firmware/export/pcf50605.h  |  1 +
 3 files changed, 48 insertions(+), 4 deletions(-)

diff --git a/firmware/drivers/pcf50605.c b/firmware/drivers/pcf50605.c
index c7a8db5941..d205f89882 100644
--- a/firmware/drivers/pcf50605.c
+++ b/firmware/drivers/pcf50605.c
@@ -27,6 +27,40 @@
 #include "i2c-pp5020.h"
 #include "rtc.h"
 
+#define OOCS  0x01
+#define INT1  0x02
+#define INT2  0x03
+#define INT3  0x04
+#define INT1M 0x05
+#define INT2M 0x06
+#define INT3M 0x07
+#define OOCC1 0x08
+  #define GOSTDBY  0x1
+  #define TOTRST   (0x1 << 1)
+  #define CLK32ON  (0x1 << 2)
+  #define WDTRST   (0x1 << 3)
+  #define RTCWAK   (0x1 << 4)
+  #define CHGWAK   (0x1 << 5)
+  #define EXTONWAK (0x01 << 6)
+#define OOCC2 0x09
+#define RTCSC 0x0a
+#define RTCMN 0x0b
+#define RTCHR 0x0c
+#define RTCWD 0x0d
+#define RTCDT 0x0e
+#define RTCMT 0x0f
+#define RTCYR 0x10
+#define RTCSCA 0x11
+#define RTCMNA 0x12
+#define RTCHRA 0x13
+#define RTCWDA 0x14
+#define RTCDTA 0x15
+#define RTCMTA 0x16
+#define RTCYRA 0x17
+#define PSSC   0x18
+#define PWROKM 0x19
+#define PWROKS 0x1a
+
 int pcf50605_read(int address)
 {
     return i2c_readbyte(0x8,address);
@@ -47,9 +81,7 @@ int pcf50605_read_multiple(int address, unsigned char* buf, int count)
 
 int pcf50605_write(int address, unsigned char val)
 {
-    /* TODO */
-    (void)address;
-    (void)val;
+    ipod_i2c_send(0x8, address, val);
     return 0;
 }
 
@@ -84,6 +116,15 @@ static int pcf50605_a2d_read(int adc_input)
     return (hi << 2) | lo;
 }
 
+/* The following command puts the iPod into a deep sleep.  Warning
+   from the good people of ipodlinux - never issue this command
+   without setting CHGWAK or EXTONWAK if you ever want to be able to
+   power on your iPod again. */
+void pcf50605_standby_mode(void)
+{
+    pcf50605_write(OOCC1, GOSTDBY | CHGWAK | EXTONWAK);
+}
+
 int pcf50605_battery_read(void)
 {
     return pcf50605_a2d_read(0x3);       /* ADCIN1, subtractor */
diff --git a/firmware/drivers/power.c b/firmware/drivers/power.c
index e339b901cb..04168f9895 100644
--- a/firmware/drivers/power.c
+++ b/firmware/drivers/power.c
@@ -25,6 +25,7 @@
 #include "power.h"
 #include "hwcompat.h"
 #include "logf.h"
+#include "pcf50605.h"
 #include "pcf50606.h"
 
 #ifdef HAVE_CHARGE_CTRL
@@ -261,7 +262,8 @@ void power_off(void)
 #if CONFIG_CPU == MCF5249
     and_l(~0x00080000, &GPIO1_OUT);
 #elif CONFIG_CPU == PP5020
-    /* TODO: Implement power_off() */
+    /* We don't turn off the ipod, we put it in a deep sleep */
+    pcf50605_standby_mode();
 #elif defined(GMINI_ARCH)
     P1 &= ~1;
     P1CON &= ~1;
diff --git a/firmware/export/pcf50605.h b/firmware/export/pcf50605.h
index fc52b98e99..8da64f3325 100644
--- a/firmware/export/pcf50605.h
+++ b/firmware/export/pcf50605.h
@@ -26,6 +26,7 @@ void pcf50605_read_multiple(int address, unsigned char* buf, int count);
 int pcf50605_write(int address, unsigned char val);
 int pcf50605_write_multiple(int address, const unsigned char* buf, int count);
 int pcf50605_battery_read(void);
+void pcf50605_standby_mode(void);
 #endif
 
 #endif
-- 
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