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author | Lorenzo Miori <memoryS60@gmail.com> | 2013-09-10 22:48:34 +0200 |
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committer | Thomas Martitz <kugel@rockbox.org> | 2014-02-05 09:56:21 +0100 |
commit | e876f4df6d240bd2e319b1e63be95a625f049a97 (patch) | |
tree | ce2fe1b24650e3be7a6cd2d346d29090a5422a8c /firmware/target/hosted/samsungypr/ypr1/wmcodec-ypr1.c | |
parent | b828b9d99bff2acc0e1f543f3176fd4b632cba68 (diff) | |
download | rockbox-e876f4df6d240bd2e319b1e63be95a625f049a97.tar.gz rockbox-e876f4df6d240bd2e319b1e63be95a625f049a97.zip |
Samsung YP-R1 target port
This is the basic port to the new target Samsung
YP-R1, which runs on a similar platform as YP-R0.
Port is usable, although there are still
some optimizations that have to be done.
Change-Id: If83a8e386369e413581753780c159026d9e41f04
Diffstat (limited to 'firmware/target/hosted/samsungypr/ypr1/wmcodec-ypr1.c')
-rw-r--r-- | firmware/target/hosted/samsungypr/ypr1/wmcodec-ypr1.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/firmware/target/hosted/samsungypr/ypr1/wmcodec-ypr1.c b/firmware/target/hosted/samsungypr/ypr1/wmcodec-ypr1.c new file mode 100644 index 0000000000..f38c33ada1 --- /dev/null +++ b/firmware/target/hosted/samsungypr/ypr1/wmcodec-ypr1.c | |||
@@ -0,0 +1,90 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * | ||
9 | * I2C bus wrapper for WM1808 codec on SAMSUNG YP-R1 | ||
10 | * | ||
11 | * Copyright (c) 2013 Lorenzo Miori | ||
12 | * | ||
13 | * This program is free software; you can redistribute it and/or | ||
14 | * modify it under the terms of the GNU General Public License | ||
15 | * as published by the Free Software Foundation; either version 2 | ||
16 | * of the License, or (at your option) any later version. | ||
17 | * | ||
18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
19 | * KIND, either express or implied. | ||
20 | * | ||
21 | ****************************************************************************/ | ||
22 | |||
23 | #include <stdio.h> | ||
24 | #include <unistd.h> | ||
25 | #include <fcntl.h> | ||
26 | #include <sys/ioctl.h> | ||
27 | |||
28 | #include "system.h" | ||
29 | #include "audiohw.h" | ||
30 | #include "wmcodec.h" | ||
31 | #include "audio.h" | ||
32 | #include "panic.h" | ||
33 | #include "logf.h" | ||
34 | |||
35 | |||
36 | #define I2C_SLAVE 0x0703 | ||
37 | |||
38 | /** | ||
39 | * YP-R1's kernel has ALSA implementation of the WM1808, but it | ||
40 | * unfortunately doesn't export any function to play with register. | ||
41 | * For that reason we control the I2C bus directly, letting RB driver to do the rest | ||
42 | * Assumption: no other ALSA applications are using the mixer! | ||
43 | */ | ||
44 | |||
45 | static int wmcodec_dev = -1; | ||
46 | |||
47 | /* The ONLY tested freq for now is 44100, others are just stubs!! */ | ||
48 | const struct wmc_srctrl_entry wmc_srctrl_table[HW_NUM_FREQ] = | ||
49 | { | ||
50 | /* TODO fix PLL frequencies also for the other available rates */ | ||
51 | [HW_FREQ_44] = /* PLL = on */ | ||
52 | { | ||
53 | .plln = 3 | (1 << 3), | ||
54 | .pllk1 = 0x18, /* 11289600 */ | ||
55 | .pllk2 = 0x111, | ||
56 | .pllk3 = 0x139, | ||
57 | .mclkdiv = WMC_MCLKDIV_2, | ||
58 | .filter = WMC_SR_48KHZ, | ||
59 | }, | ||
60 | }; | ||
61 | |||
62 | void audiohw_init(void) | ||
63 | { | ||
64 | /* First of all we need to open the device */ | ||
65 | wmcodec_dev = open("/dev/i2c-1", O_RDWR); | ||
66 | if (wmcodec_dev < 0) | ||
67 | panicf("Failed to open /dev/i2c-1 device!\n"); | ||
68 | |||
69 | /* Let's set the slave address and if no error we are ready!*/ | ||
70 | int addr = 0x1a; | ||
71 | if (ioctl(wmcodec_dev, I2C_SLAVE, addr) < 0) | ||
72 | logf("Failed to set slave address!\n"); | ||
73 | } | ||
74 | |||
75 | void wmcodec_write(int reg, int data) | ||
76 | { | ||
77 | unsigned char data2[2]; | ||
78 | /* |aaaaaaad|dddddddd| */ | ||
79 | data2[0] = (reg << 0x1) | ((data >> 8) & 0x1); | ||
80 | data2[1] = data; | ||
81 | |||
82 | if (write(wmcodec_dev, data2, 2) < 0) | ||
83 | panicf("I2C device write error!\n"); | ||
84 | } | ||
85 | |||
86 | void audiohw_enable_headphone_jack(bool enable) | ||
87 | { | ||
88 | /* We don't use this facility: we have a separate GPIO for that */ | ||
89 | (void)enable; | ||
90 | } | ||