From 8a177345ce7b96a00f1f14387412c2dfacfeaf34 Mon Sep 17 00:00:00 2001
From: Jens Arnold <amiconn@rockbox.org>
Date: Tue, 14 Aug 2007 22:06:23 +0000
Subject: Moved archos power handling into target tree. * Tuner power handling
 cleaned up a bit.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14345 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/target/sh/archos/fm_v2/power-fm_v2.c | 109 ++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 firmware/target/sh/archos/fm_v2/power-fm_v2.c

(limited to 'firmware/target/sh/archos/fm_v2/power-fm_v2.c')

diff --git a/firmware/target/sh/archos/fm_v2/power-fm_v2.c b/firmware/target/sh/archos/fm_v2/power-fm_v2.c
new file mode 100644
index 0000000000..94a36339bb
--- /dev/null
+++ b/firmware/target/sh/archos/fm_v2/power-fm_v2.c
@@ -0,0 +1,109 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Linus Nielsen Feltzing
+ *
+ * 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.
+ *
+ ****************************************************************************/
+#include "config.h"
+#include "cpu.h"
+#include <stdbool.h>
+#include "adc.h"
+#include "kernel.h"
+#include "system.h"
+#include "power.h"
+#include "usb.h"
+
+#if CONFIG_TUNER
+
+bool tuner_power(bool status)
+{
+    (void)status;
+    return true;
+}
+
+#endif /* #if CONFIG_TUNER */
+
+void power_init(void)
+{
+    PBCR2 &= ~0x0c00;    /* GPIO for PB5 */
+    or_b(0x20, &PBIORL);
+    or_b(0x20, &PBDRL);  /* hold power */
+}
+
+bool charger_inserted(void)
+{
+    /* FM or V2 can also charge from the USB port */
+    return (adc_read(ADC_CHARGE_REGULATOR) < 0x1FF);
+}
+
+/* Returns true if the unit is charging the batteries. */
+bool charging_state(void) 
+{
+  /* We use the information from the ADC_EXT_POWER ADC channel, which
+    tells us the charging current from the LTC1734. When DC is
+    connected (either via the external adapter, or via USB), we try
+    to determine if it is actively charging or only maintaining the
+    charge. My tests show that ADC readings below about 0x80 means
+    that the LTC1734 is only maintaining the charge. */
+    return adc_read(ADC_EXT_POWER) >= 0x80;
+}
+
+void ide_power_enable(bool on)
+{
+    bool touched = false;
+
+    if(on)
+    {
+        or_b(0x20, &PADRL);
+        touched = true;
+    }
+#ifdef HAVE_ATA_POWER_OFF
+    if(!on)
+    {
+        and_b(~0x20, &PADRL);
+        touched = true;
+    }
+#endif /* HAVE_ATA_POWER_OFF */
+
+/* late port preparation, else problems with read/modify/write 
+   of other bits on same port, while input and floating high */
+    if (touched)
+    {
+        or_b(0x20, &PAIORL); /* PA5 is an output */
+        PACR2 &= 0xFBFF; /* GPIO for PA5 */
+    }
+}
+
+
+bool ide_powered(void)
+{
+#ifdef HAVE_ATA_POWER_OFF
+    if ((PACR2 & 0x0400) || !(PAIORL & 0x20)) /* not configured for output */
+        return true; /* would be floating high, disk on */
+    else
+        return (PADRL & 0x20) != 0;
+#else /* !defined(NEEDS_ATA_POWER_ON) && !defined(HAVE_ATA_POWER_OFF) */
+    return true; /* pretend always powered if not controlable */
+#endif
+}
+
+void power_off(void)
+{
+    set_irq_level(HIGHEST_IRQ_LEVEL);
+    and_b(~0x20, &PBDRL);
+    or_b(0x20, &PBIORL);
+    while(1)
+        yield();
+}
-- 
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