1 files changed, 95 insertions, 0 deletions

diff --git a/firmware/target/arm/s5l8700/yps3/power-yps3.c b/firmware/target/arm/s5l8700/yps3/power-yps3.c
new file mode 100644
index 0000000000..784a5a9629
--- /dev/null
+++ b/firmware/target/arm/s5l8700/yps3/power-yps3.c
@@ -0,0 +1,95 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   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 "s5l8700.h"
+#include "power.h"
+
+/*  Power handling for the S5L8700 based Samsung YP-S3
+
+    Pins involved in with power management:
+    * P1.1: USB power detect
+    * P4.7: tuner power/enable
+    * P5.2: unknown output
+    * P5.3: unknown output, related to charging (perhaps charge current?)
+    * P5.4: charge status input (only valid if charger enabled)
+    * P5.6: charger enable
+*/
+
+void power_off(void)
+{
+    /* don't know how to do this yet */
+}
+
+void power_init(void)
+{
+    /* configure pin P1.1 as input for USB power detect */
+    PCON1 = (PCON1 & ~0x000000F0) | 0x00000000;
+
+    /* enable tuner power pin on P4.7 and turn power off */
+    PCON4 = (PCON4 & ~0xF0000000) | 0x10000000;
+    PDAT4 &= ~(1 << 7);
+
+    /* configure pins P5.2 / P5.3 / P5.6 as output, P5.4 as input */
+    PCON5 = (PCON5 & ~0x0F0FFF00) | 0x01001100;
+    PDAT5 &= ~((1 << 2) | (1 << 3) | (1 << 6));
+}
+
+#if CONFIG_CHARGING
+unsigned int power_input_status(void)
+{
+    /* check USB power on P1.1 */
+    if (PDAT1 & (1 << 1)) {
+        return POWER_INPUT_USB;
+    }
+    
+    return POWER_INPUT_NONE;
+}
+
+bool charging_state(void)
+{
+    if (PDAT5 & (1 << 6)) {
+        /* charger is enabled, check if charging is busy */
+        return (PDAT5 & (1 << 4));
+    }
+    return false;
+}
+#endif /* CONFIG_CHARGING */
+
+#if CONFIG_TUNER
+bool tuner_power(bool status)
+{
+    if (status) {
+        PDAT4 |= (1 << 7);
+    }
+    else {
+        PDAT4 &= ~(1 << 7);
+    }
+    /* TODO what should we return here? */
+    return status;    
+}
+
+bool tuner_powered(void)
+{
+    return (PDAT4 & (1 << 7));
+}
+#endif /* CONFIG_TUNER */
+