From bac6a70184b18ca17a46b3ed955944e1a4d3f032 Mon Sep 17 00:00:00 2001
From: Tomasz Moń <desowin@gmail.com>
Date: Mon, 5 Dec 2011 09:53:23 +0000
Subject: Sansa Connect: Revise codec initialization/shutdown.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31149 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/target/arm/tms320dm320/i2c-dm320.c        |  6 ++++
 firmware/target/arm/tms320dm320/i2c-dm320.h        | 12 ++++++++
 .../tms320dm320/sansa-connect/avr-sansaconnect.c   | 32 ++++++++++++++++++----
 .../tms320dm320/sansa-connect/power-sansaconnect.c |  6 ++++
 4 files changed, 51 insertions(+), 5 deletions(-)

(limited to 'firmware/target')

diff --git a/firmware/target/arm/tms320dm320/i2c-dm320.c b/firmware/target/arm/tms320dm320/i2c-dm320.c
index 990dad0721..2530209402 100644
--- a/firmware/target/arm/tms320dm320/i2c-dm320.c
+++ b/firmware/target/arm/tms320dm320/i2c-dm320.c
@@ -287,4 +287,10 @@ int i2c_read(unsigned short address, unsigned char* buf, int count)
     return i2c_read_data(dm320_i2c_bus, address, -1, buf, count);
 }
 
+int i2c_read_bytes(unsigned short address, unsigned short reg,
+                   unsigned char* buf, int count)
+{
+    return i2c_read_data(dm320_i2c_bus, address, reg, buf, count);
+}
+
 #endif
diff --git a/firmware/target/arm/tms320dm320/i2c-dm320.h b/firmware/target/arm/tms320dm320/i2c-dm320.h
index be7d02ed4d..7dfc19f046 100644
--- a/firmware/target/arm/tms320dm320/i2c-dm320.h
+++ b/firmware/target/arm/tms320dm320/i2c-dm320.h
@@ -19,6 +19,18 @@
  *
  ****************************************************************************/
 
+#ifndef I2C_DM320_H
+#define I2C_DM320_H
+
+#include "system.h"
+
 void i2c_init(void);
 int i2c_write(unsigned short address, const unsigned char *data, int count);
 int i2c_read(unsigned short address, unsigned char* buf, int count);
+
+#ifdef HAVE_SOFTWARE_I2C
+int i2c_read_bytes(unsigned short address, unsigned short reg,
+                   unsigned char* buf, int count);
+#endif
+
+#endif
diff --git a/firmware/target/arm/tms320dm320/sansa-connect/avr-sansaconnect.c b/firmware/target/arm/tms320dm320/sansa-connect/avr-sansaconnect.c
index 036b7db127..dedd017cf7 100644
--- a/firmware/target/arm/tms320dm320/sansa-connect/avr-sansaconnect.c
+++ b/firmware/target/arm/tms320dm320/sansa-connect/avr-sansaconnect.c
@@ -29,6 +29,7 @@
 #include "button.h"
 #include "backlight.h"
 #include "powermgmt.h"
+#include "aic3x.h"
 
 //#define BUTTON_DEBUG
 
@@ -405,6 +406,26 @@ void GIO0(void)
     /* interrupt will be enabled back after button read */
     queue_post(&btn_queue, BTN_INTERRUPT, 0);
 }
+
+void GIO2(void) __attribute__ ((section(".icode")));
+void GIO2(void)
+{
+    /* Clear interrupt */
+    IO_INTC_IRQ1 = (1 << 7);
+    /* Disable interrupt */
+    IO_INTC_EINT1 &= ~INTR_EINT1_EXT2;
+
+    if (IO_GIO_BITSET0 & 0x04)
+    {
+        aic3x_switch_output(false);
+    }
+    else
+    {
+        aic3x_switch_output(true);
+    }
+
+    IO_INTC_EINT1 |= INTR_EINT1_EXT2;
+}
 #endif
 
 void button_init_device(void)
@@ -425,12 +446,13 @@ void button_init_device(void)
     avr_hid_get_state();
 
 #ifndef BOOTLOADER
-    IO_GIO_IRQPORT |= 0x01; /* Enable GIO0 external interrupt */
-    IO_GIO_INV0 &= ~0x01; /* Clear INV for GIO0 (falling edge detection) */
-    IO_GIO_IRQEDGE &= ~0x01; /* Set edge detection (falling) */
+    IO_GIO_IRQPORT |= 0x05; /* Enable GIO0/GIO2 external interrupt */
+    IO_GIO_INV0 &= ~0x05; /* Clear INV for GIO0/GIO2 */
+    /* falling edge detection on GIO0, any edge on GIO2 */
+    IO_GIO_IRQEDGE = (IO_GIO_IRQEDGE & ~0x01) | 0x04;
 
-    /* Enable GIO0 interrupt */
-    IO_INTC_EINT1 |= INTR_EINT1_EXT0;
+    /* Enable GIO0 and GIO2 interrupts */
+    IO_INTC_EINT1 |= INTR_EINT1_EXT0 | INTR_EINT1_EXT2;
 #endif
 }
 
diff --git a/firmware/target/arm/tms320dm320/sansa-connect/power-sansaconnect.c b/firmware/target/arm/tms320dm320/sansa-connect/power-sansaconnect.c
index 07c80a07c3..f73df98641 100644
--- a/firmware/target/arm/tms320dm320/sansa-connect/power-sansaconnect.c
+++ b/firmware/target/arm/tms320dm320/sansa-connect/power-sansaconnect.c
@@ -49,6 +49,9 @@ static void tps65021_write_reg(unsigned reg, unsigned value)
 
 void power_init(void)
 {
+    /* Enable LDO */
+    tps65021_write_reg(0x03, 0xFD);
+
     /* PWM mode */
     tps65021_write_reg(0x04, 0xB2);
  
@@ -61,6 +64,9 @@ void power_init(void)
 
 void power_off(void)
 {
+    /* Disable GIO0 and GIO2 interrupts */
+    IO_INTC_EINT1 &= ~(INTR_EINT1_EXT2 | INTR_EINT1_EXT0);
+
     avr_hid_reset_codec();
     avr_hid_power_off();
 }
-- 
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