From a69e1c4a4425a69a920f7a85c45b1ac6de717a07 Mon Sep 17 00:00:00 2001
From: Rafaël Carré <rafael.carre@gmail.com>
Date: Wed, 5 May 2010 04:06:44 +0000
Subject: Fuzev2: FM - tested on 2 different models

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25818 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/export/config/sansafuzev2.h               |  4 +--
 firmware/target/arm/as3525/fmradio-i2c-as3525.c    | 34 ++++++++++++++++++----
 .../target/arm/as3525/sansa-fuzev2/button-fuzev2.c |  7 +++++
 3 files changed, 38 insertions(+), 7 deletions(-)

diff --git a/firmware/export/config/sansafuzev2.h b/firmware/export/config/sansafuzev2.h
index 4caab8464a..b920e4153b 100644
--- a/firmware/export/config/sansafuzev2.h
+++ b/firmware/export/config/sansafuzev2.h
@@ -21,7 +21,7 @@
 
 /* Define bitmask of input sources - recordable bitmask can be defined
    explicitly if different */
-#define INPUT_SRC_CAPS (SRC_CAP_MIC /*| SRC_CAP_FMRADIO*/)
+#define INPUT_SRC_CAPS (SRC_CAP_MIC | SRC_CAP_FMRADIO)
 
 /* define this if you have a bitmap LCD display */
 #define HAVE_LCD_BITMAP
@@ -117,7 +117,7 @@
 #define AB_REPEAT_ENABLE 1
 
 /* FM Tuner - suspected to be the SI4702 */
-//#define CONFIG_TUNER SI4700
+#define CONFIG_TUNER SI4700
 /* #define HAVE_TUNER_PWR_CTRL */
 
 /* Define this for LCD backlight available */
diff --git a/firmware/target/arm/as3525/fmradio-i2c-as3525.c b/firmware/target/arm/as3525/fmradio-i2c-as3525.c
index c86e3f53ab..31d701dc6d 100644
--- a/firmware/target/arm/as3525/fmradio-i2c-as3525.c
+++ b/firmware/target/arm/as3525/fmradio-i2c-as3525.c
@@ -30,6 +30,7 @@
 #include "as3525.h"
 #include "generic_i2c.h"
 #include "fmradio_i2c.h"
+#include "system.h"
 
 #if     defined(SANSA_CLIP) || defined(SANSA_C200V2)
 #define I2C_SCL_GPIO(x) GPIOB_PIN(x)
@@ -63,6 +64,14 @@
 #define I2C_SCL_PIN 6
 #define I2C_SDA_PIN 7
 
+#elif   defined(SANSA_FUZEV2)
+#define I2C_SCL_GPIO(x) GPIOB_PIN(x)
+#define I2C_SDA_GPIO(x) GPIOA_PIN(x)
+#define I2C_SCL_GPIO_DIR GPIOB_DIR
+#define I2C_SDA_GPIO_DIR GPIOA_DIR
+#define I2C_SCL_PIN 1
+#define I2C_SDA_PIN 0
+
 #else
 #error no FM I2C GPIOPIN defines
 #endif
@@ -158,13 +167,28 @@ void fmradio_i2c_init(void)
 
 int fmradio_i2c_write(unsigned char address, const unsigned char* buf, int count)
 {
-    return i2c_write_data(fm_i2c_bus, address, -1, buf, count);
+#ifdef SANSA_FUZEV2
+    int s = disable_irq_save();
+    CCU_IO &= ~(1<<12);
+#endif
+    int ret = i2c_write_data(fm_i2c_bus, address, -1, buf, count);
+#ifdef SANSA_FUZEV2
+    CCU_IO |= 1<<12;
+    restore_irq(s);
+#endif
+    return ret;
 }
 
 int fmradio_i2c_read(unsigned char address, unsigned char* buf, int count)
 {
-    return i2c_read_data(fm_i2c_bus, address, -1, buf, count);
+#ifdef SANSA_FUZEV2
+    int s = disable_irq_save();
+    CCU_IO &= ~(1<<12);
+#endif
+    int ret = i2c_read_data(fm_i2c_bus, address, -1, buf, count);
+#ifdef SANSA_FUZEV2
+    CCU_IO |= 1<<12;
+    restore_irq(s);
+#endif
+    return ret;
 }
-
-
-
diff --git a/firmware/target/arm/as3525/sansa-fuzev2/button-fuzev2.c b/firmware/target/arm/as3525/sansa-fuzev2/button-fuzev2.c
index d23fb432d6..fcda5226ca 100644
--- a/firmware/target/arm/as3525/sansa-fuzev2/button-fuzev2.c
+++ b/firmware/target/arm/as3525/sansa-fuzev2/button-fuzev2.c
@@ -232,6 +232,10 @@ int button_read_device(void)
 
     CCU_IO &= ~(1<<12);
 
+    /* B1 is shared with FM i2c */
+    bool gpiob_pin0_dir = GPIOB_DIR & (1<<1);
+    GPIOB_DIR &= ~(1<<1);
+
     GPIOB_PIN(0) = 1<<0;
     udelay(4);
 
@@ -266,6 +270,9 @@ int button_read_device(void)
         }
     }
 
+    if(gpiob_pin0_dir)
+        GPIOB_DIR |= 1<<1;
+
     CCU_IO |= 1<<12;
 
 #ifdef HAS_BUTTON_HOLD
-- 
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