diff options
Diffstat (limited to 'sound/soc/omap/omap3evm.c')
-rw-r--r-- | sound/soc/omap/omap3evm.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/sound/soc/omap/omap3evm.c b/sound/soc/omap/omap3evm.c new file mode 100644 index 00000000000..0daa0446983 --- /dev/null +++ b/sound/soc/omap/omap3evm.c | |||
@@ -0,0 +1,135 @@ | |||
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> | ||
25 | |||
26 | #include <asm/mach-types.h> | ||
27 | #include <mach/hardware.h> | ||
28 | #include <mach/gpio.h> | ||
29 | #include <plat/mcbsp.h> | ||
30 | |||
31 | #include "omap-mcbsp.h" | ||
32 | #include "omap-pcm.h" | ||
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; | ||
38 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | ||
39 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | ||
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", | ||
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", | ||
85 | .ops = &omap3evm_ops, | ||
86 | }; | ||
87 | |||
88 | /* Audio machine driver */ | ||
89 | static struct snd_soc_card snd_soc_omap3evm = { | ||
90 | .name = "omap3evm", | ||
91 | .dai_link = &omap3evm_dai, | ||
92 | .num_links = 1, | ||
93 | }; | ||
94 | |||
95 | static struct platform_device *omap3evm_snd_device; | ||
96 | |||
97 | static int __init omap3evm_soc_init(void) | ||
98 | { | ||
99 | int ret; | ||
100 | |||
101 | if (!machine_is_omap3evm()) | ||
102 | return -ENODEV; | ||
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 | |||
111 | platform_set_drvdata(omap3evm_snd_device, &snd_soc_omap3evm); | ||
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"); | ||
135 | MODULE_LICENSE("GPL v2"); | ||