Charger detection for Gigabeat S

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17093 a1c6a512-1295-4272-9138-f99709370657

4 files changed, 47 insertions, 3 deletions

diff --git a/firmware/export/mc13783.h b/firmware/export/mc13783.h
index 264c0bac4f..a489f4c8b9 100644
--- a/firmware/export/mc13783.h
+++ b/firmware/export/mc13783.h
@@ -88,6 +88,9 @@ enum mc13783_regs_enum
     MC13783_NUM_REGS,
 };
 
+/* INTERRUPT_STATUS0, INTERRUPT_MASK0, INTERRUPT_SENSE0 */
+#define MC13783_CHGDET      (1 << 6)
+
 /* INTERRUPT_STATUS1, INTERRUPT_MASK1, INTERRUPT_SENSE1 */
 #define MC13783_HSL         (1 << 0)
 #define MC13783_ON1B        (1 << 3)
diff --git a/firmware/target/arm/imx31/gigabeat-s/mc13783-imx31.c b/firmware/target/arm/imx31/gigabeat-s/mc13783-imx31.c
index a04cd7f893..fdb214a33d 100644
--- a/firmware/target/arm/imx31/gigabeat-s/mc13783-imx31.c
+++ b/firmware/target/arm/imx31/gigabeat-s/mc13783-imx31.c
@@ -24,6 +24,7 @@
 #include "debug.h"
 #include "kernel.h"
 
+#include "power-imx31.h"
 #include "button-target.h"
 
 /* This is all based on communicating with the MC13783 PMU which is on 
@@ -64,11 +65,15 @@ static __attribute__((noreturn)) void mc13783_interrupt_thread(void)
     gpio_enable_event(MC13783_GPIO_NUM, MC13783_EVENT_ID);
 
     /* Check initial states */
+    value = mc13783_read(MC13783_INTERRUPT_SENSE0);
+    set_charger_inserted(value & MC13783_CHGDET);
+
     value = mc13783_read(MC13783_INTERRUPT_SENSE1);
     button_power_set_state((value & MC13783_ON1B) == 0);
     set_headphones_inserted((value & MC13783_ON2B) == 0);
 
     /* Enable desired PMIC interrupts */
+    mc13783_clear(MC13783_INTERRUPT_MASK0, MC13783_CHGDET);
     mc13783_clear(MC13783_INTERRUPT_MASK1, MC13783_ON1B | MC13783_ON2B);
     
     while (1)
@@ -78,12 +83,19 @@ static __attribute__((noreturn)) void mc13783_interrupt_thread(void)
         mc13783_read_regset(status_regs, pending, 2);
         mc13783_write_regset(status_regs, pending, 2);
 
-#if 0
+
         if (pending[0])
         {
             /* Handle ...PENDING0 */
+            if (pending[0] & MC13783_CHGDET)
+            {
+                value = mc13783_read(MC13783_INTERRUPT_SENSE0);
+
+                if (pending[0] & MC13783_CHGDET)
+                    set_charger_inserted(value & MC13783_CHGDET);
+            }
         }
-#endif
+
 
         if (pending[1])
         {
diff --git a/firmware/target/arm/imx31/gigabeat-s/power-imx31.c b/firmware/target/arm/imx31/gigabeat-s/power-imx31.c
index f57c55a70b..e51318d16f 100644
--- a/firmware/target/arm/imx31/gigabeat-s/power-imx31.c
+++ b/firmware/target/arm/imx31/gigabeat-s/power-imx31.c
@@ -26,13 +26,21 @@
 
 #ifndef SIMULATOR
 
+static bool charger_detect = false;
+
 void power_init(void)
 {
 }
 
+/* This is called from the mc13783 interrupt thread */
+void set_charger_inserted(bool inserted)
+{
+    charger_detect = inserted;
+}
+
 bool charger_inserted(void)
 {
-    return false;
+    return charger_detect;
 }
 
 /* Returns true if the unit is charging the batteries. */
diff --git a/firmware/target/arm/imx31/gigabeat-s/power-imx31.h b/firmware/target/arm/imx31/gigabeat-s/power-imx31.h
new file mode 100644
index 0000000000..f2f6ef8a73
--- /dev/null
+++ b/firmware/target/arm/imx31/gigabeat-s/power-imx31.h
@@ -0,0 +1,21 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id:$
+ *
+ * Copyright (C) 2008 by Nils Wallménius
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+void set_charger_inserted(bool inserted);
+