Preparing for the Philips SA9200 part 1. Move the Sansa ADC & ATA drivers up one level.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17487 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 53 insertions, 0 deletions

diff --git a/firmware/target/arm/adc-as3514.c b/firmware/target/arm/adc-as3514.c
new file mode 100644
index 0000000000..dcf6cba26e
--- /dev/null
+++ b/firmware/target/arm/adc-as3514.c
@@ -0,0 +1,53 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2006 by Barry Wardell
+ *
+ * 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 "adc.h"
+#include "kernel.h"
+#include "i2c-pp.h"
+#include "as3514.h"
+
+/* Read 10-bit channel data */
+unsigned short adc_read(int channel)
+{
+    unsigned short data = 0;
+
+    if ((unsigned)channel < NUM_ADC_CHANNELS)
+    {
+        i2c_lock();
+
+        /* Select channel */
+        if (pp_i2c_send( AS3514_I2C_ADDR, AS3514_ADC_0, (channel << 4)) >= 0)
+        {
+            unsigned char buf[2];
+
+            /* Read data */
+            if (i2c_readbytes( AS3514_I2C_ADDR, AS3514_ADC_0, 2, buf) >= 0)
+            {
+                data = (((buf[0] & 0x3) << 8) | buf[1]);
+            }
+        }
+
+        i2c_unlock();
+    }
+    
+    return data;
+}
+
+void adc_init(void)
+{
+}