diff options
Diffstat (limited to 'firmware/target/arm/imx31/gigabeat-s/wmcodec-imx31.c')
-rw-r--r-- | firmware/target/arm/imx31/gigabeat-s/wmcodec-imx31.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/firmware/target/arm/imx31/gigabeat-s/wmcodec-imx31.c b/firmware/target/arm/imx31/gigabeat-s/wmcodec-imx31.c index 238ee3aeb2..235ae54bad 100644 --- a/firmware/target/arm/imx31/gigabeat-s/wmcodec-imx31.c +++ b/firmware/target/arm/imx31/gigabeat-s/wmcodec-imx31.c | |||
@@ -7,7 +7,7 @@ | |||
7 | * \/ \/ \/ \/ \/ | 7 | * \/ \/ \/ \/ \/ |
8 | * $Id$ | 8 | * $Id$ |
9 | * | 9 | * |
10 | * Gigabeat specific code for the Wolfson codec | 10 | * Gigabeat S specific code for the WM8978 codec |
11 | * | 11 | * |
12 | * Based on code from the ipodlinux project - http://ipodlinux.org/ | 12 | * Based on code from the ipodlinux project - http://ipodlinux.org/ |
13 | * Adapted for Rockbox in December 2005 | 13 | * Adapted for Rockbox in December 2005 |
@@ -28,12 +28,31 @@ | |||
28 | #include "sound.h" | 28 | #include "sound.h" |
29 | #include "i2c-imx31.h" | 29 | #include "i2c-imx31.h" |
30 | 30 | ||
31 | /* NOTE: Some port-specific bits will have to be moved away (node and GPIO | ||
32 | * writes) for cleanest implementation. */ | ||
33 | |||
34 | static struct i2c_node wm8978_i2c_node = | ||
35 | { | ||
36 | .num = I2C1_NUM, | ||
37 | .ifdr = I2C_IFDR_DIV192, /* 66MHz/.4MHz = 165, closest = 192 = 343750Hz */ | ||
38 | /* Just hard-code for now - scaling may require | ||
39 | * updating */ | ||
40 | .addr = WM8978_I2C_ADDR, | ||
41 | }; | ||
42 | |||
31 | void audiohw_init(void) | 43 | void audiohw_init(void) |
32 | { | 44 | { |
45 | i2c_enable_node(&wm8978_i2c_node, true); | ||
46 | GPIO3_DR |= (1 << 21); /* Turn on analogue LDO */ | ||
47 | sleep(HZ/10); /* Wait for things to stabilize */ | ||
48 | audiohw_preinit(); | ||
33 | } | 49 | } |
34 | 50 | ||
35 | void wmcodec_write(int reg, int data) | 51 | void wmcodec_write(int reg, int data) |
36 | { | 52 | { |
37 | (void)reg; | 53 | unsigned char d[2]; |
38 | (void)data; | 54 | /* |aaaaaaad|dddddddd| */ |
55 | d[0] = (reg << 1) | ((data & 0x100) >> 8); | ||
56 | d[1] = data; | ||
57 | i2c_write(&wm8978_i2c_node, d, 2); | ||
39 | } | 58 | } |