Meizu: implement power driver (USB power detect / charging status / poweroff)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21805 a1c6a512-1295-4272-9138-f99709370657

firmware/export/config-meizu-m3.h

@@ -116,8 +116,8 @@
 #define BATTERY_CAPACITY_INC    50    /* capacity increment */
 #define BATTERY_TYPES_COUNT     1     /* only one type */
 
-/* Hardware controlled charging? FIXME */
+/* Hardware controlled charging, software can monitor plug and charge state */
-#define CONFIG_CHARGING CHARGING_SIMPLE
+#define CONFIG_CHARGING CHARGING_MONITOR
 
 #ifndef SIMULATOR
 

firmware/target/arm/s5l8700/power-meizu.c

@@ -0,0 +1,92 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright © 2009 Bertrik Sikken
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include <stdbool.h>
+#include "config.h"
+#include "inttypes.h"
+#include "s5l8700.h"
+#include "power.h"
+
+/*  Power handling for S5L8700 based Meizu players
+
+    The M3 and M6 players appear to use the same pins for power, USB detection
+    and charging status.
+*/
+
+void power_off(void)
+{
+    /* take down PWRON_M (P1.3) */
+    PDAT1 &= ~(1 << 3);
+}
+
+void power_init(void)
+{
+    /* configure PWRON_M (P1.3) as output and set it to keep power turned on */
+    PCON1 = (PCON1 & ~(0xF << 12)) | (0x1 << 12);
+    PDAT1 |= (1 << 3);
+    
+    /* configure PBSTAT (P1.4) as input */
+    PCON1 &= ~(0xF << 16);
+    
+    /* configure CHRG (P5.7) as input to monitor charging state */
+    PCON5 &= ~(0xF << 28);
+    
+    /* enable USB2.0 function controller to allow VBUS monitoring */
+    PWRCON &= ~(1 << 15);
+}
+
+#if CONFIG_CHARGING
+unsigned int power_input_status(void)
+{
+    /* check VBUS in the USB2.0 function controller */
+    if (TR & (1 << 15)) {
+        return POWER_INPUT_USB;
+    }
+    
+    return POWER_INPUT_NONE;
+}
+
+bool charging_state(void)
+{
+    /* CHRG pin goes low when charging */
+    return ((PDAT5 & (1 << 7)) == 0);
+}
+#endif /* CONFIG_CHARGING */
+
+#if CONFIG_TUNER
+static bool tuner_on = false;
+
+bool tuner_power(bool status)
+{
+    if (status != tuner_on)
+    {
+        tuner_on = status;
+        status = !status;
+    }
+
+    return status;    
+}
+
+bool tuner_powered(void)
+{
+    return tuner_on; /* No debug info */
+}
+#endif /* CONFIG_TUNER */
+