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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 LG |
38 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
39 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
14610ce7 AA |
40 | int ret; |
41 | ||
42 | /* Set codec DAI configuration */ | |
43 | ret = snd_soc_dai_set_fmt(codec_dai, | |
44 | SND_SOC_DAIFMT_I2S | | |
45 | SND_SOC_DAIFMT_NB_NF | | |
46 | SND_SOC_DAIFMT_CBM_CFM); | |
47 | if (ret < 0) { | |
48 | printk(KERN_ERR "Can't set codec DAI configuration\n"); | |
49 | return ret; | |
50 | } | |
51 | ||
52 | /* Set cpu DAI configuration */ | |
53 | ret = snd_soc_dai_set_fmt(cpu_dai, | |
54 | SND_SOC_DAIFMT_I2S | | |
55 | SND_SOC_DAIFMT_NB_NF | | |
56 | SND_SOC_DAIFMT_CBM_CFM); | |
57 | if (ret < 0) { | |
58 | printk(KERN_ERR "Can't set cpu DAI configuration\n"); | |
59 | return ret; | |
60 | } | |
61 | ||
62 | /* Set the codec system clock for DAC and ADC */ | |
63 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000, | |
64 | SND_SOC_CLOCK_IN); | |
65 | if (ret < 0) { | |
66 | printk(KERN_ERR "Can't set codec system clock\n"); | |
67 | return ret; | |
68 | } | |
69 | ||
70 | return 0; | |
71 | } | |
72 | ||
73 | static struct snd_soc_ops omap3evm_ops = { | |
74 | .hw_params = omap3evm_hw_params, | |
75 | }; | |
76 | ||
77 | /* Digital audio interface glue - connects codec <--> CPU */ | |
78 | static struct snd_soc_dai_link omap3evm_dai = { | |
79 | .name = "TWL4030", | |
80 | .stream_name = "TWL4030", | |
f0fba2ad LG |
81 | .cpu_dai_name = "omap-mcbsp-dai.1", |
82 | .codec_dai_name = "twl4030-hifi", | |
83 | .platform_name = "omap-pcm-audio", | |
84 | .codec_name = "twl4030-codec", | |
14610ce7 AA |
85 | .ops = &omap3evm_ops, |
86 | }; | |
87 | ||
88 | /* Audio machine driver */ | |
89 | static struct snd_soc_card snd_soc_omap3evm = { | |
90 | .name = "omap3evm", | |
14610ce7 AA |
91 | .dai_link = &omap3evm_dai, |
92 | .num_links = 1, | |
93 | }; | |
94 | ||
14610ce7 AA |
95 | static struct platform_device *omap3evm_snd_device; |
96 | ||
97 | static int __init omap3evm_soc_init(void) | |
98 | { | |
99 | int ret; | |
100 | ||
ec588ae6 | 101 | if (!machine_is_omap3evm()) |
14610ce7 | 102 | return -ENODEV; |
14610ce7 AA |
103 | pr_info("OMAP3 EVM SoC init\n"); |
104 | ||
105 | omap3evm_snd_device = platform_device_alloc("soc-audio", -1); | |
106 | if (!omap3evm_snd_device) { | |
107 | printk(KERN_ERR "Platform device allocation failed\n"); | |
108 | return -ENOMEM; | |
109 | } | |
110 | ||
f0fba2ad | 111 | platform_set_drvdata(omap3evm_snd_device, &snd_soc_omap3evm); |
14610ce7 AA |
112 | ret = platform_device_add(omap3evm_snd_device); |
113 | if (ret) | |
114 | goto err1; | |
115 | ||
116 | return 0; | |
117 | ||
118 | err1: | |
119 | printk(KERN_ERR "Unable to add platform device\n"); | |
120 | platform_device_put(omap3evm_snd_device); | |
121 | ||
122 | return ret; | |
123 | } | |
124 | ||
125 | static void __exit omap3evm_soc_exit(void) | |
126 | { | |
127 | platform_device_unregister(omap3evm_snd_device); | |
128 | } | |
129 | ||
130 | module_init(omap3evm_soc_init); | |
131 | module_exit(omap3evm_soc_exit); | |
132 | ||
133 | MODULE_AUTHOR("Anuj Aggarwal <anuj.aggarwal@ti.com>"); | |
134 | MODULE_DESCRIPTION("ALSA SoC OMAP3 EVM"); | |
bd6ddcb4 | 135 | MODULE_LICENSE("GPL v2"); |