as3514/as3543 fixes

- Enable end of charge monitoring once, it doesn't need to be disabled
- Acknowledge the first (wrong) end of charge interrupt on charger enable
  (this had been broken in r25299)
- Centralize reads to ENRD* registers and cache the results when needed
    - on PP it is not needed because reads are atomic, we only check for
      end of charge when the charging, and for charger presence when
      discharging

as3525v2 (using as3543) specifics
- I got the datasheet today from AMS, thanks to them for being so fast
  and not require me to sign tons of papers!
- USB detection now works on as3525v2 using the as3543. Clip+ won't
  reboot to OF yet, it needs mkamsboot support first (usbstack disabled)
- Charging should work, the CHARGER register is at a different place, it
  is an extended PMU register -> use ascodec_read/write_charger() to
  access it
- real interrupts are not used yet for ENRD, we get thousands of
  interrupts per second, apparently only limited by the i2c clock.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26116 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 2 insertions, 6 deletions

diff --git a/firmware/export/config/sansaclipplus.h b/firmware/export/config/sansaclipplus.h
index 79a7776b51..574c3ecc80 100644
--- a/firmware/export/config/sansaclipplus.h
+++ b/firmware/export/config/sansaclipplus.h
@@ -173,19 +173,15 @@
 
 #define USB_HANDLED_BY_OF
 
-#if 0 /* disabled since there is no USB driver */
-
 /* USB On-the-go */
-#define CONFIG_USBOTG USBOTG_ARC
+#define CONFIG_USBOTG USBOTG_AS3525
 
 /* enable these for the experimental usb stack */
-#define HAVE_USBSTACK
+//#define HAVE_USBSTACK
 #define USB_VENDOR_ID 0x0781
 #define USB_PRODUCT_ID 0x74d1
 #endif /* BOOTLOADER */
 
-#endif
-
 
 /* Virtual LED (icon) */
 #define CONFIG_LED LED_VIRTUAL