diff options
author | Steve Sakoman <steve@sakoman.com> | 2008-10-31 00:50:13 -0400 |
---|---|---|
committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2008-10-31 08:33:38 -0400 |
commit | 4e207873736adc55cbf92796eb4f26f280f84034 (patch) | |
tree | e03ea1eafe5fc02033f0e1a2b56cd7502af92901 /sound/soc/omap/overo.c | |
parent | cc17557e7876a92e11d4b406a367d28e103e42e6 (diff) |
ASoC: Add support for Gumstix Overo
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/omap/overo.c')
-rw-r--r-- | sound/soc/omap/overo.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/sound/soc/omap/overo.c b/sound/soc/omap/overo.c new file mode 100644 index 000000000000..c26d1de7da51 --- /dev/null +++ b/sound/soc/omap/overo.c | |||
@@ -0,0 +1,148 @@ | |||
1 | /* | ||
2 | * overo.c -- SoC audio for Gumstix Overo | ||
3 | * | ||
4 | * Author: Steve Sakoman <steve@sakoman.com> | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or | ||
7 | * modify it under the terms of the GNU General Public License | ||
8 | * version 2 as published by the Free Software Foundation. | ||
9 | * | ||
10 | * This program is distributed in the hope that it will be useful, but | ||
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
13 | * General Public License for more details. | ||
14 | * | ||
15 | * You should have received a copy of the GNU General Public License | ||
16 | * along with this program; if not, write to the Free Software | ||
17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | ||
18 | * 02110-1301 USA | ||
19 | * | ||
20 | */ | ||
21 | |||
22 | #include <linux/clk.h> | ||
23 | #include <linux/platform_device.h> | ||
24 | #include <sound/core.h> | ||
25 | #include <sound/pcm.h> | ||
26 | #include <sound/soc.h> | ||
27 | #include <sound/soc-dapm.h> | ||
28 | |||
29 | #include <asm/mach-types.h> | ||
30 | #include <mach/hardware.h> | ||
31 | #include <mach/gpio.h> | ||
32 | #include <mach/mcbsp.h> | ||
33 | |||
34 | #include "omap-mcbsp.h" | ||
35 | #include "omap-pcm.h" | ||
36 | #include "../codecs/twl4030.h" | ||
37 | |||
38 | static int overo_hw_params(struct snd_pcm_substream *substream, | ||
39 | struct snd_pcm_hw_params *params) | ||
40 | { | ||
41 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | ||
42 | struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; | ||
43 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; | ||
44 | int ret; | ||
45 | |||
46 | /* Set codec DAI configuration */ | ||
47 | ret = snd_soc_dai_set_fmt(codec_dai, | ||
48 | SND_SOC_DAIFMT_I2S | | ||
49 | SND_SOC_DAIFMT_NB_NF | | ||
50 | SND_SOC_DAIFMT_CBM_CFM); | ||
51 | if (ret < 0) { | ||
52 | printk(KERN_ERR "can't set codec DAI configuration\n"); | ||
53 | return ret; | ||
54 | } | ||
55 | |||
56 | /* Set cpu DAI configuration */ | ||
57 | ret = snd_soc_dai_set_fmt(cpu_dai, | ||
58 | SND_SOC_DAIFMT_I2S | | ||
59 | SND_SOC_DAIFMT_NB_NF | | ||
60 | SND_SOC_DAIFMT_CBM_CFM); | ||
61 | if (ret < 0) { | ||
62 | printk(KERN_ERR "can't set cpu DAI configuration\n"); | ||
63 | return ret; | ||
64 | } | ||
65 | |||
66 | /* Set the codec system clock for DAC and ADC */ | ||
67 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000, | ||
68 | SND_SOC_CLOCK_IN); | ||
69 | if (ret < 0) { | ||
70 | printk(KERN_ERR "can't set codec system clock\n"); | ||
71 | return ret; | ||
72 | } | ||
73 | |||
74 | return 0; | ||
75 | } | ||
76 | |||
77 | static struct snd_soc_ops overo_ops = { | ||
78 | .hw_params = overo_hw_params, | ||
79 | }; | ||
80 | |||
81 | /* Digital audio interface glue - connects codec <--> CPU */ | ||
82 | static struct snd_soc_dai_link overo_dai = { | ||
83 | .name = "TWL4030", | ||
84 | .stream_name = "TWL4030", | ||
85 | .cpu_dai = &omap_mcbsp_dai[0], | ||
86 | .codec_dai = &twl4030_dai, | ||
87 | .ops = &overo_ops, | ||
88 | }; | ||
89 | |||
90 | /* Audio machine driver */ | ||
91 | static struct snd_soc_machine snd_soc_machine_overo = { | ||
92 | .name = "overo", | ||
93 | .dai_link = &overo_dai, | ||
94 | .num_links = 1, | ||
95 | }; | ||
96 | |||
97 | /* Audio subsystem */ | ||
98 | static struct snd_soc_device overo_snd_devdata = { | ||
99 | .machine = &snd_soc_machine_overo, | ||
100 | .platform = &omap_soc_platform, | ||
101 | .codec_dev = &soc_codec_dev_twl4030, | ||
102 | }; | ||
103 | |||
104 | static struct platform_device *overo_snd_device; | ||
105 | |||
106 | static int __init overo_soc_init(void) | ||
107 | { | ||
108 | int ret; | ||
109 | |||
110 | if (!machine_is_overo()) { | ||
111 | pr_debug("Not Overo!\n"); | ||
112 | return -ENODEV; | ||
113 | } | ||
114 | printk(KERN_INFO "overo SoC init\n"); | ||
115 | |||
116 | overo_snd_device = platform_device_alloc("soc-audio", -1); | ||
117 | if (!overo_snd_device) { | ||
118 | printk(KERN_ERR "Platform device allocation failed\n"); | ||
119 | return -ENOMEM; | ||
120 | } | ||
121 | |||
122 | platform_set_drvdata(overo_snd_device, &overo_snd_devdata); | ||
123 | overo_snd_devdata.dev = &overo_snd_device->dev; | ||
124 | *(unsigned int *)overo_dai.cpu_dai->private_data = 1; /* McBSP2 */ | ||
125 | |||
126 | ret = platform_device_add(overo_snd_device); | ||
127 | if (ret) | ||
128 | goto err1; | ||
129 | |||
130 | return 0; | ||
131 | |||
132 | err1: | ||
133 | printk(KERN_ERR "Unable to add platform device\n"); | ||
134 | platform_device_put(overo_snd_device); | ||
135 | |||
136 | return ret; | ||
137 | } | ||
138 | module_init(overo_soc_init); | ||
139 | |||
140 | static void __exit overo_soc_exit(void) | ||
141 | { | ||
142 | platform_device_unregister(overo_snd_device); | ||
143 | } | ||
144 | module_exit(overo_soc_exit); | ||
145 | |||
146 | MODULE_AUTHOR("Steve Sakoman <steve@sakoman.com>"); | ||
147 | MODULE_DESCRIPTION("ALSA SoC overo"); | ||
148 | MODULE_LICENSE("GPL"); | ||