Abstract the PortalPlayer AS3514 handling with an "ascodec" API - inspired by the wmcodec API used with the Wolfson codecs. The intention is to implement this API for the AS3525 and then share code with the Sansa V2 ports.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18940 a1c6a512-1295-4272-9138-f99709370657

8 files changed, 153 insertions, 17 deletions

diff --git a/firmware/target/arm/adc-as3514.c b/firmware/target/arm/adc-as3514.c
index 26cdc76f0d..9c2a421441 100644
--- a/firmware/target/arm/adc-as3514.c
+++ b/firmware/target/arm/adc-as3514.c
@@ -20,7 +20,7 @@
  ****************************************************************************/
 #include "adc.h"
 #include "kernel.h"
-#include "i2c-pp.h"
+#include "ascodec.h"
 #include "as3514.h"
 
 /* Read 10-bit channel data */
@@ -30,21 +30,21 @@ unsigned short adc_read(int channel)
 
     if ((unsigned)channel < NUM_ADC_CHANNELS)
     {
-        i2c_lock();
+        ascodec_lock();
 
         /* Select channel */
-        if (pp_i2c_send( AS3514_I2C_ADDR, AS3514_ADC_0, (channel << 4)) >= 0)
+        if (ascodec_write(AS3514_ADC_0, (channel << 4)) >= 0)
         {
             unsigned char buf[2];
 
             /* Read data */
-            if (i2c_readbytes( AS3514_I2C_ADDR, AS3514_ADC_0, 2, buf) >= 0)
+            if (ascodec_readbytes(AS3514_ADC_0, 2, buf) >= 0)
             {
                 data = (((buf[0] & 0x3) << 8) | buf[1]);
             }
         }
 
-        i2c_unlock();
+        ascodec_unlock();
     }
     
     return data;
diff --git a/firmware/target/arm/ascodec-pp.c b/firmware/target/arm/ascodec-pp.c
new file mode 100644
index 0000000000..30b6b1f8de
--- /dev/null
+++ b/firmware/target/arm/ascodec-pp.c
@@ -0,0 +1,66 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Driver for AS3514 audio codec
+ *
+ * Copyright (c) 2007 Daniel Ankers
+ * Copyright (c) 2007 Christian Gmeiner
+ *
+ * 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 "cpu.h"
+#include "system.h"
+
+#include "audiohw.h"
+#include "i2s.h"
+
+/*
+ * Initialise the PP I2C and I2S.
+ */
+void audiohw_init(void)
+{
+    /* normal outputs for CDI and I2S pin groups */
+    DEV_INIT2 &= ~0x300;
+
+    /*mini2?*/
+    DEV_INIT1 &=~0x3000000;
+    /*mini2?*/
+
+    /* device reset */
+    DEV_RS |= DEV_I2S;
+    DEV_RS &=~DEV_I2S;
+
+    /* I2S device reset */
+    DEV_RS |= DEV_I2S;
+    DEV_RS &=~DEV_I2S;
+
+    /* I2S device enable */
+    DEV_EN |= DEV_I2S;
+
+    /* enable external dev clock clocks */
+    DEV_EN |= DEV_EXTCLOCKS;
+
+    /* external dev clock to 24MHz */
+    outl(inl(0x70000018) & ~0xc, 0x70000018);
+
+    i2s_reset();
+
+    audiohw_preinit();
+}
+
+void audiohw_postinit(void)
+{
+}
diff --git a/firmware/target/arm/ascodec-target.h b/firmware/target/arm/ascodec-target.h
new file mode 100644
index 0000000000..19b1644541
--- /dev/null
+++ b/firmware/target/arm/ascodec-target.h
@@ -0,0 +1,69 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Driver for AS3514 audio codec
+ *
+ * Copyright (c) 2007 Daniel Ankers
+ * Copyright (c) 2007 Christian Gmeiner
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+#ifndef _ASCODEC_TARGET_H
+#define _ASCODEC_TARGET_H
+
+#include "config.h"
+
+#ifdef CPU_PP
+/* TODO: This header is actually portalplayer specific, and should be
+ * moved into an appropriate subdir  */
+
+#include "i2c-pp.h"
+
+#if defined(SANSA_E200) || defined(SANSA_C200) || defined(PHILIPS_SA9200)
+#define AS3514_I2C_ADDR 0x46
+#else
+#error Unknown target!
+#endif
+
+static inline int ascodec_write(unsigned int reg, unsigned int value)
+{
+    return pp_i2c_send(AS3514_I2C_ADDR, reg, value);
+}
+
+static inline int ascodec_read(unsigned int reg)
+{
+    return i2c_readbyte(AS3514_I2C_ADDR, reg);
+}
+
+static inline int ascodec_readbytes(int addr, int len, unsigned char *data)
+{
+    return i2c_readbytes(AS3514_I2C_ADDR, addr, len, data);
+}
+
+static inline void ascodec_lock(void)
+{
+    i2c_lock();
+}
+
+static inline void ascodec_unlock(void)
+{
+    i2c_unlock();
+}
+
+#endif /* CPU_PP */
+
+#endif /* !_ASCODEC_TARGET_H */
diff --git a/firmware/target/arm/i2c-pp.c b/firmware/target/arm/i2c-pp.c
index 4d83208d91..3db25c027c 100644
--- a/firmware/target/arm/i2c-pp.c
+++ b/firmware/target/arm/i2c-pp.c
@@ -32,6 +32,7 @@
 #include "logf.h"
 #include "system.h"
 #include "i2c-pp.h"
+#include "ascodec.h"
 #include "as3514.h"
 
 /* Local functions definitions */
@@ -230,7 +231,7 @@ void i2c_init(void)
     outl(0, 0x600060a4);
     outl(0x1e, 0x600060a4);
 
-    pp_i2c_send(AS3514_I2C_ADDR, AS3514_SUPERVISOR, 5);
+    ascodec_write(AS3514_SUPERVISOR, 5);
 #endif
 #endif
 
diff --git a/firmware/target/arm/philips/sa9200/backlight-sa9200.c b/firmware/target/arm/philips/sa9200/backlight-sa9200.c
index 33342d19f1..b3984ca9ad 100644
--- a/firmware/target/arm/philips/sa9200/backlight-sa9200.c
+++ b/firmware/target/arm/philips/sa9200/backlight-sa9200.c
@@ -23,7 +23,7 @@
 #include "system.h"
 #include "lcd.h"
 #include "backlight.h"
-#include "i2c-pp.h"
+#include "ascodec.h"
 #include "as3514.h"
 
 static unsigned short backlight_brightness = DEFAULT_BRIGHTNESS_SETTING;
@@ -46,12 +46,12 @@ void _backlight_on(void)
 #ifdef HAVE_LCD_ENABLE
     lcd_enable(true); /* power on lcd + visible display */
 #endif
-    pp_i2c_send(AS3514_I2C_ADDR, AS3514_DCDC15, backlight_brightness);
+    ascodec_write(AS3514_DCDC15, backlight_brightness);
 }
 
 void _backlight_off(void)
 {
-    pp_i2c_send(AS3514_I2C_ADDR, AS3514_DCDC15, 0x0);
+    ascodec_write(AS3514_DCDC15, 0x0);
 #ifdef HAVE_LCD_ENABLE
     lcd_enable(false); /* power off visible display */
 #endif
diff --git a/firmware/target/arm/philips/sa9200/power-sa9200.c b/firmware/target/arm/philips/sa9200/power-sa9200.c
index a559f65ec4..b005a86651 100644
--- a/firmware/target/arm/philips/sa9200/power-sa9200.c
+++ b/firmware/target/arm/philips/sa9200/power-sa9200.c
@@ -36,9 +36,9 @@ void power_off(void)
     char byte;
 
     /* Send shutdown command to PMU */
-    byte = i2c_readbyte(AS3514_I2C_ADDR, AS3514_SYSTEM);
+    byte = ascodec_read(AS3514_SYSTEM);
     byte &= ~0x1;   
-    pp_i2c_send(AS3514_I2C_ADDR, AS3514_SYSTEM, byte);
+    ascodec_write(AS3514_SYSTEM, byte);
 
     /* Stop interrupts on both cores */
     disable_interrupt(IRQ_FIQ_STATUS);
diff --git a/firmware/target/arm/sandisk/backlight-c200_e200.c b/firmware/target/arm/sandisk/backlight-c200_e200.c
index 33342d19f1..b3984ca9ad 100644
--- a/firmware/target/arm/sandisk/backlight-c200_e200.c
+++ b/firmware/target/arm/sandisk/backlight-c200_e200.c
@@ -23,7 +23,7 @@
 #include "system.h"
 #include "lcd.h"
 #include "backlight.h"
-#include "i2c-pp.h"
+#include "ascodec.h"
 #include "as3514.h"
 
 static unsigned short backlight_brightness = DEFAULT_BRIGHTNESS_SETTING;
@@ -46,12 +46,12 @@ void _backlight_on(void)
 #ifdef HAVE_LCD_ENABLE
     lcd_enable(true); /* power on lcd + visible display */
 #endif
-    pp_i2c_send(AS3514_I2C_ADDR, AS3514_DCDC15, backlight_brightness);
+    ascodec_write(AS3514_DCDC15, backlight_brightness);
 }
 
 void _backlight_off(void)
 {
-    pp_i2c_send(AS3514_I2C_ADDR, AS3514_DCDC15, 0x0);
+    ascodec_write(AS3514_DCDC15, 0x0);
 #ifdef HAVE_LCD_ENABLE
     lcd_enable(false); /* power off visible display */
 #endif
diff --git a/firmware/target/arm/sandisk/power-c200_e200.c b/firmware/target/arm/sandisk/power-c200_e200.c
index a559f65ec4..d6319f44bb 100644
--- a/firmware/target/arm/sandisk/power-c200_e200.c
+++ b/firmware/target/arm/sandisk/power-c200_e200.c
@@ -22,7 +22,7 @@
 #include <stdbool.h>
 #include "system.h"
 #include "cpu.h"
-#include "i2c-pp.h"
+#include "ascodec.h"
 #include "tuner.h"
 #include "as3514.h"
 #include "power.h"
@@ -36,9 +36,9 @@ void power_off(void)
     char byte;
 
     /* Send shutdown command to PMU */
-    byte = i2c_readbyte(AS3514_I2C_ADDR, AS3514_SYSTEM);
+    byte = ascodec_read(AS3514_SYSTEM);
     byte &= ~0x1;   
-    pp_i2c_send(AS3514_I2C_ADDR, AS3514_SYSTEM, byte);
+    ascodec_write(AS3514_SYSTEM, byte);
 
     /* Stop interrupts on both cores */
     disable_interrupt(IRQ_FIQ_STATUS);