As3525 v1/v2 Add power savings menu

Allow user to select cpu undervolt

There have been quite a few issues across the SANSA AMS line related
to CPU undervolting while most players show greatly increased runtime
some crash.
Rather than constanly upping the voltage we now have a
setting with a safe value for all players and the option for lower voltages

I plan to add a few other options here later such as disk
timings and maybe some other clocks/experimental settings

Added: Disk Low speed option for AS3525v2 devices cuts
	frequency to 12 MHz from 24 MHz
Added: Disk Low speed option for AS3525v1 devices cuts
        frequency to 15.5 MHz from 31 MHz

Added: I2c Low Speed AS3525 devices, should be bigger improvement for v1 devices

Fixed: Debug menu for AS3525v2 No SDSLOT frequency,
	Showed IDE freq though it is unused

Added: DBOP and SSP underclocking affects display on v1/v2 respectively

Fixed: debug menu now has SSP frequency, and SSP_CPSR

Update: made settings menu more generic

Update: cleaned up code

Added: Clip v1 & Fuze v1 didn't have HAVE_ADJUSTABLE_CPU_VOLTAGE.
	not sure why but,  waiting on testing to confirm

Added: C200v2 and E200v2 devices and HAVE_ADJUSTABLE_CPU_VOLTAGE.

Fixed: v1 devices don't like display timing set lower (dbop)
       v1 devices don't have a divider set for ssp (causes divide by 0)

Fixed: ClipZip display lags with Max SSP divider changed from 0xFE to 0x32

Fixed: v1 devices didn't work properly with highspeed sd cards
	Added code from http://gerrit.rockbox.org/r/#/c/1704/
	Added powersave and IDE interface enable/disable

Added: V2 devices now have powersave enabled on sd interface

Update: cleaned up code, lang defines, added manual entries

Update ssp clock mechanism added calculated ssp divider to clipzip

Update turn display clock off when clip+ turns off display

Fixed: clipzip wrong register for SSP clock

Change-Id: I04137682243be92f0f8d8bf1cfa54fbb1965559b
TODO: add other players?

8 files changed, 52 insertions, 0 deletions

diff --git a/firmware/export/config/sansac200v2.h b/firmware/export/config/sansac200v2.h
index a51f9e3b00..98fbb570fb 100644
--- a/firmware/export/config/sansac200v2.h
+++ b/firmware/export/config/sansac200v2.h
@@ -193,6 +193,14 @@
 /* Define this if you have adjustable CPU frequency */
 #define HAVE_ADJUSTABLE_CPU_FREQ
 
+/*define this to enable CPU voltage scaling on AMS devices*/
+#define HAVE_ADJUSTABLE_CPU_VOLTAGE
+
+#ifndef BOOTLOADER
+/*define this with flags for power saving options device supports*/
+#define CONFIG_POWER_SAVING (POWERSV_CPU | POWERSV_I2C | POWERSV_DISK)
+#endif
+
 #define BOOTFILE_EXT    "sansa"
 #define BOOTFILE        "rockbox." BOOTFILE_EXT
 #define BOOTDIR "/.rockbox"
diff --git a/firmware/export/config/sansaclip.h b/firmware/export/config/sansaclip.h
index cdee43d44a..f0300c2ac1 100644
--- a/firmware/export/config/sansaclip.h
+++ b/firmware/export/config/sansaclip.h
@@ -186,6 +186,14 @@
 /* Define this if you have adjustable CPU frequency */
 #define HAVE_ADJUSTABLE_CPU_FREQ
 
+/*define this to enable CPU voltage scaling on AMS devices*/
+#define HAVE_ADJUSTABLE_CPU_VOLTAGE
+
+#ifndef BOOTLOADER
+/*define this with flags for power saving options device supports*/
+#define CONFIG_POWER_SAVING (POWERSV_CPU | POWERSV_I2C | POWERSV_DISK)
+#endif
+
 #define BOOTFILE_EXT    "sansa"
 #define BOOTFILE        "rockbox." BOOTFILE_EXT
 #define BOOTDIR "/.rockbox"
diff --git a/firmware/export/config/sansaclipplus.h b/firmware/export/config/sansaclipplus.h
index addf7d86c0..9a307420f4 100644
--- a/firmware/export/config/sansaclipplus.h
+++ b/firmware/export/config/sansaclipplus.h
@@ -206,6 +206,11 @@
 /*define this to enable CPU voltage scaling on AMS devices*/
 #define HAVE_ADJUSTABLE_CPU_VOLTAGE
 
+#ifndef BOOTLOADER
+/*define this with flags for power saving options device supports*/
+#define CONFIG_POWER_SAVING (POWERSV_CPU | POWERSV_I2C | POWERSV_DISK | POWERSV_DISP)
+#endif
+
 #define BOOTFILE_EXT    "sansa"
 #define BOOTFILE        "rockbox." BOOTFILE_EXT
 #define BOOTDIR "/.rockbox"
diff --git a/firmware/export/config/sansaclipv2.h b/firmware/export/config/sansaclipv2.h
index cf3f90e363..81a0d4703f 100644
--- a/firmware/export/config/sansaclipv2.h
+++ b/firmware/export/config/sansaclipv2.h
@@ -200,6 +200,11 @@
 /*define this to enable CPU voltage scaling on AMS devices*/
 #define HAVE_ADJUSTABLE_CPU_VOLTAGE
 
+#ifndef BOOTLOADER
+/*define this with flags for power saving options device supports*/
+#define CONFIG_POWER_SAVING (POWERSV_CPU | POWERSV_I2C | POWERSV_DISK)
+#endif
+
 #define BOOTFILE_EXT    "sansa"
 #define BOOTFILE        "rockbox." BOOTFILE_EXT
 #define BOOTDIR "/.rockbox"
diff --git a/firmware/export/config/sansaclipzip.h b/firmware/export/config/sansaclipzip.h
index fc9f558eef..8464603c34 100644
--- a/firmware/export/config/sansaclipzip.h
+++ b/firmware/export/config/sansaclipzip.h
@@ -205,6 +205,11 @@
 /*define this to enable CPU voltage scaling on AMS devices*/
 #define HAVE_ADJUSTABLE_CPU_VOLTAGE
 
+#ifndef BOOTLOADER
+/*define this with flags for power saving options device supports*/
+#define CONFIG_POWER_SAVING (POWERSV_CPU | POWERSV_I2C | POWERSV_DISK | POWERSV_DISP)
+#endif
+
 #define BOOTFILE_EXT    "sansa"
 #define BOOTFILE        "rockbox." BOOTFILE_EXT
 #define BOOTDIR "/.rockbox"
diff --git a/firmware/export/config/sansae200v2.h b/firmware/export/config/sansae200v2.h
index 96b51f4e12..50e1843189 100644
--- a/firmware/export/config/sansae200v2.h
+++ b/firmware/export/config/sansae200v2.h
@@ -213,6 +213,14 @@
 /* Define this if you have adjustable CPU frequency */
 #define HAVE_ADJUSTABLE_CPU_FREQ
 
+/*define this to enable CPU voltage scaling on AMS devices*/
+#define HAVE_ADJUSTABLE_CPU_VOLTAGE
+
+#ifndef BOOTLOADER
+/*define this with flags for power saving options device supports*/
+#define CONFIG_POWER_SAVING (POWERSV_CPU | POWERSV_I2C | POWERSV_DISK)
+#endif
+
 #define BOOTFILE_EXT    "sansa"
 #define BOOTFILE        "rockbox." BOOTFILE_EXT
 #define BOOTDIR "/.rockbox"
diff --git a/firmware/export/config/sansafuze.h b/firmware/export/config/sansafuze.h
index fae3463d75..dedf8c44da 100644
--- a/firmware/export/config/sansafuze.h
+++ b/firmware/export/config/sansafuze.h
@@ -219,6 +219,14 @@
 /* Define this if you have adjustable CPU frequency */
 #define HAVE_ADJUSTABLE_CPU_FREQ
 
+/*define this to enable CPU voltage scaling on AMS devices*/
+#define HAVE_ADJUSTABLE_CPU_VOLTAGE
+
+#ifndef BOOTLOADER
+/*define this with flags for power saving options device supports*/
+#define CONFIG_POWER_SAVING (POWERSV_CPU | POWERSV_I2C | POWERSV_DISK)
+#endif
+
 #define BOOTFILE_EXT    "sansa"
 #define BOOTFILE        "rockbox." BOOTFILE_EXT
 #define BOOTDIR "/.rockbox"
diff --git a/firmware/export/config/sansafuzev2.h b/firmware/export/config/sansafuzev2.h
index b85e0747a3..3190930b56 100644
--- a/firmware/export/config/sansafuzev2.h
+++ b/firmware/export/config/sansafuzev2.h
@@ -224,6 +224,11 @@
 /*define this to enable CPU voltage scaling on AMS devices*/
 #define HAVE_ADJUSTABLE_CPU_VOLTAGE
 
+#ifndef BOOTLOADER
+/*define this with flags for power saving options device supports*/
+#define CONFIG_POWER_SAVING (POWERSV_CPU | POWERSV_I2C | POWERSV_DISK)
+#endif
+
 #define BOOTFILE_EXT    "sansa"
 #define BOOTFILE        "rockbox." BOOTFILE_EXT
 #define BOOTDIR "/.rockbox"