Charging state reporting on H3x0

Don't read the GPIO every refresh of statusbar or gwps for plugged state, use a
variable exported from powermgmt instead.
Allow Custom WPS to access %bc for battery charge state on targets that support
this.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8383 a1c6a512-1295-4272-9138-f99709370657

3 files changed, 31 insertions, 3 deletions

diff --git a/firmware/export/config-h300.h b/firmware/export/config-h300.h
index 806ae0a..ded20c9 100644
--- a/firmware/export/config-h300.h
+++ b/firmware/export/config-h300.h
@@ -72,6 +72,9 @@
 /* Define this if the platform can charge batteries */
 #define HAVE_CHARGING 1
 
+/* For units with a hardware charger that reports charge state */
+#define HAVE_CHARGE_STATE 1
+
 /* define this if the hardware can be powered off while charging */
 #define HAVE_POWEROFF_WHILE_CHARGING
 
diff --git a/firmware/export/power.h b/firmware/export/power.h
index bf64552..9f91e25 100644
--- a/firmware/export/power.h
+++ b/firmware/export/power.h
@@ -25,6 +25,7 @@ extern bool charger_enabled;
 
 void power_init(void);
 bool charger_inserted(void);
+bool charging_state(void);
 void charger_enable(bool on);
 void ide_power_enable(bool on);
 bool ide_powered(void);
diff --git a/firmware/export/powermgmt.h b/firmware/export/powermgmt.h
index 3c4a61f..25c18ea 100644
--- a/firmware/export/powermgmt.h
+++ b/firmware/export/powermgmt.h
@@ -79,18 +79,38 @@ extern int trickle_sec;          /* trickle charge: How many seconds per minute
 
 #endif /* HAVE_CHARGE_CTRL */
 
-#if defined(HAVE_CHARGE_CTRL) || (CONFIG_BATTERY == BATT_LIION2200)
+#if defined(HAVE_CHARGE_CTRL) || \
+    (CONFIG_BATTERY == BATT_LIION2200) || \
+    defined(HAVE_CHARGE_STATE)
 typedef enum {
     DISCHARGING,
     CHARGING,
+#ifdef HAVE_CHARGE_CTRL
     TOPOFF,
     TRICKLE
+#endif
 } charge_state_type;
 
 /* tells what the charger is doing */
 extern charge_state_type charge_state;
 #endif /* defined(HAVE_CHARGE_CTRL) || (CONFIG_BATTERY == BATT_LIION2200) */
 
+#ifdef HAVE_CHARGING
+/*
+ * Flag that the charger has been plugged in/removed: this is set for exactly
+ * one time through the power loop when the charger has been plugged in.
+ */
+typedef enum {
+    NO_CHARGER,
+    CHARGER_UNPLUGGED,              /* transient state */
+    CHARGER_PLUGGED,                /* transient state */
+    CHARGER
+} charger_input_state_type;
+
+/* tells the state of the charge input */
+extern charger_input_state_type charger_input_state;
+#endif
+
 #ifdef HAVE_MMC  /* Values for Ondio */
 # define CURRENT_NORMAL     95  /* average, nearly proportional to 1/U */
 # define CURRENT_USB         1  /* host powered in USB mode; avoid zero-div */
@@ -106,9 +126,13 @@ extern charge_state_type charge_state;
 
 # define CURRENT_MIN_CHG    70  /* minimum charge current */
 # define MIN_CHG_V        8500  /* at 8.5v charger voltage get CURRENT_MIN_CHG */
-# define CURRENT_MAX_CHG   350  /* maximum charging current */
+# ifdef IRIVER_H300_SERIES
+#  define CURRENT_MAX_CHG  650  /* maximum charging current */
+# else
+#  define CURRENT_MAX_CHG  350  /* maximum charging current */
+# endif
 # define MAX_CHG_V       10250  /* anything over 10.25v gives CURRENT_MAX_CHG */
-#endif /* HAVE_MMC */
+#endif /* not HAVE_MMC */
 
 extern unsigned int bat;       /* filtered battery voltage, centivolts */
 extern unsigned short power_history[POWER_HISTORY_LEN];