Commit | Line | Data |
---|---|---|
14610ce7 AA |
1 | /* |
2 | * omap3evm.c -- ALSA SoC support for OMAP3 EVM | |
3 | * | |
4 | * Author: Anuj Aggarwal <anuj.aggarwal@ti.com> | |
5 | * | |
6 | * Based on sound/soc/omap/beagle.c by Steve Sakoman | |
7 | * | |
8 | * Copyright (C) 2008 Texas Instruments, Incorporated | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation version 2. | |
13 | * | |
14 | * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind, | |
15 | * whether express or implied; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * General Public License for more details. | |
18 | */ | |
19 | ||
20 | #include <linux/clk.h> | |
21 | #include <linux/platform_device.h> | |
22 | #include <sound/core.h> | |
23 | #include <sound/pcm.h> | |
24 | #include <sound/soc.h> | |
14610ce7 AA |
25 | |
26 | #include <asm/mach-types.h> | |
27 | #include <mach/hardware.h> | |
28 | #include <mach/gpio.h> | |
ce491cf8 | 29 | #include <plat/mcbsp.h> |
14610ce7 AA |
30 | |
31 | #include "omap-mcbsp.h" | |
32 | #include "omap-pcm.h" | |
14610ce7 AA |
33 | |
34 | static int omap3evm_hw_params(struct snd_pcm_substream *substream, | |
35 | struct snd_pcm_hw_params *params) | |
36 | { | |
37 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad | 38 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
14610ce7 AA |
39 | int ret; |
40 | ||
14610ce7 AA |
41 | /* Set the codec system clock for DAC and ADC */ |
42 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000, | |
43 | SND_SOC_CLOCK_IN); | |
44 | if (ret < 0) { | |
45 | printk(KERN_ERR "Can't set codec system clock\n"); | |
46 | return ret; | |
47 | } | |
48 | ||
49 | return 0; | |
50 | } | |
51 | ||
52 | static struct snd_soc_ops omap3evm_ops = { | |
53 | .hw_params = omap3evm_hw_params, | |
54 | }; | |
55 | ||
56 | /* Digital audio interface glue - connects codec <--> CPU */ | |
57 | static struct snd_soc_dai_link omap3evm_dai = { | |
58 | .name = "TWL4030", | |
59 | .stream_name = "TWL4030", | |
f0fba2ad LG |
60 | .cpu_dai_name = "omap-mcbsp-dai.1", |
61 | .codec_dai_name = "twl4030-hifi", | |
62 | .platform_name = "omap-pcm-audio", | |
63 | .codec_name = "twl4030-codec", | |
cf9feff2 JN |
64 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
65 | SND_SOC_DAIFMT_CBM_CFM, | |
14610ce7 AA |
66 | .ops = &omap3evm_ops, |
67 | }; | |
68 | ||
69 | /* Audio machine driver */ | |
70 | static struct snd_soc_card snd_soc_omap3evm = { | |
71 | .name = "omap3evm", | |
14610ce7 AA |
72 | .dai_link = &omap3evm_dai, |
73 | .num_links = 1, | |
74 | }; | |
75 | ||
14610ce7 AA |
76 | static struct platform_device *omap3evm_snd_device; |
77 | ||
78 | static int __init omap3evm_soc_init(void) | |
79 | { | |
80 | int ret; | |
81 | ||
ec588ae6 | 82 | if (!machine_is_omap3evm()) |
14610ce7 | 83 | return -ENODEV; |
14610ce7 AA |
84 | pr_info("OMAP3 EVM SoC init\n"); |
85 | ||
86 | omap3evm_snd_device = platform_device_alloc("soc-audio", -1); | |
87 | if (!omap3evm_snd_device) { | |
88 | printk(KERN_ERR "Platform device allocation failed\n"); | |
89 | return -ENOMEM; | |
90 | } | |
91 | ||
f0fba2ad | 92 | platform_set_drvdata(omap3evm_snd_device, &snd_soc_omap3evm); |
14610ce7 AA |
93 | ret = platform_device_add(omap3evm_snd_device); |
94 | if (ret) | |
95 | goto err1; | |
96 | ||
97 | return 0; | |
98 | ||
99 | err1: | |
100 | printk(KERN_ERR "Unable to add platform device\n"); | |
101 | platform_device_put(omap3evm_snd_device); | |
102 | ||
103 | return ret; | |
104 | } | |
105 | ||
106 | static void __exit omap3evm_soc_exit(void) | |
107 | { | |
108 | platform_device_unregister(omap3evm_snd_device); | |
109 | } | |
110 | ||
111 | module_init(omap3evm_soc_init); | |
112 | module_exit(omap3evm_soc_exit); | |
113 | ||
114 | MODULE_AUTHOR("Anuj Aggarwal <anuj.aggarwal@ti.com>"); | |
115 | MODULE_DESCRIPTION("ALSA SoC OMAP3 EVM"); | |
bd6ddcb4 | 116 | MODULE_LICENSE("GPL v2"); |