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4451582f MLC |
1 | /* |
2 | * sdp3430.c -- SoC audio for TI OMAP3430 SDP | |
3 | * | |
4 | * Author: Misael Lopez Cruz <x0052729@ti.com> | |
5 | * | |
6 | * Based on: | |
7 | * Author: Steve Sakoman <steve@sakoman.com> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License | |
11 | * version 2 as published by the Free Software Foundation. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
21 | * 02110-1301 USA | |
22 | * | |
23 | */ | |
24 | ||
25 | #include <linux/clk.h> | |
26 | #include <linux/platform_device.h> | |
27 | #include <sound/core.h> | |
28 | #include <sound/pcm.h> | |
29 | #include <sound/soc.h> | |
30 | #include <sound/soc-dapm.h> | |
31 | ||
32 | #include <asm/mach-types.h> | |
33 | #include <mach/hardware.h> | |
34 | #include <mach/gpio.h> | |
35 | #include <mach/mcbsp.h> | |
36 | ||
37 | #include "omap-mcbsp.h" | |
38 | #include "omap-pcm.h" | |
39 | #include "../codecs/twl4030.h" | |
40 | ||
41 | static int sdp3430_hw_params(struct snd_pcm_substream *substream, | |
42 | struct snd_pcm_hw_params *params) | |
43 | { | |
44 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
45 | struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; | |
46 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; | |
47 | int ret; | |
48 | ||
49 | /* Set codec DAI configuration */ | |
50 | ret = snd_soc_dai_set_fmt(codec_dai, | |
51 | SND_SOC_DAIFMT_I2S | | |
52 | SND_SOC_DAIFMT_NB_NF | | |
53 | SND_SOC_DAIFMT_CBM_CFM); | |
54 | if (ret < 0) { | |
55 | printk(KERN_ERR "can't set codec DAI configuration\n"); | |
56 | return ret; | |
57 | } | |
58 | ||
59 | /* Set cpu DAI configuration */ | |
60 | ret = snd_soc_dai_set_fmt(cpu_dai, | |
61 | SND_SOC_DAIFMT_I2S | | |
62 | SND_SOC_DAIFMT_NB_NF | | |
63 | SND_SOC_DAIFMT_CBM_CFM); | |
64 | if (ret < 0) { | |
65 | printk(KERN_ERR "can't set cpu DAI configuration\n"); | |
66 | return ret; | |
67 | } | |
68 | ||
69 | /* Set the codec system clock for DAC and ADC */ | |
70 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000, | |
71 | SND_SOC_CLOCK_IN); | |
72 | if (ret < 0) { | |
73 | printk(KERN_ERR "can't set codec system clock\n"); | |
74 | return ret; | |
75 | } | |
76 | ||
77 | return 0; | |
78 | } | |
79 | ||
80 | static struct snd_soc_ops sdp3430_ops = { | |
81 | .hw_params = sdp3430_hw_params, | |
82 | }; | |
83 | ||
84 | /* Digital audio interface glue - connects codec <--> CPU */ | |
85 | static struct snd_soc_dai_link sdp3430_dai = { | |
86 | .name = "TWL4030", | |
87 | .stream_name = "TWL4030", | |
88 | .cpu_dai = &omap_mcbsp_dai[0], | |
89 | .codec_dai = &twl4030_dai, | |
90 | .ops = &sdp3430_ops, | |
91 | }; | |
92 | ||
93 | /* Audio machine driver */ | |
94 | static struct snd_soc_machine snd_soc_machine_sdp3430 = { | |
95 | .name = "SDP3430", | |
96 | .dai_link = &sdp3430_dai, | |
97 | .num_links = 1, | |
98 | }; | |
99 | ||
100 | /* Audio subsystem */ | |
101 | static struct snd_soc_device sdp3430_snd_devdata = { | |
102 | .machine = &snd_soc_machine_sdp3430, | |
103 | .platform = &omap_soc_platform, | |
104 | .codec_dev = &soc_codec_dev_twl4030, | |
105 | }; | |
106 | ||
107 | static struct platform_device *sdp3430_snd_device; | |
108 | ||
109 | static int __init sdp3430_soc_init(void) | |
110 | { | |
111 | int ret; | |
112 | ||
113 | if (!machine_is_omap_3430sdp()) { | |
114 | pr_debug("Not SDP3430!\n"); | |
115 | return -ENODEV; | |
116 | } | |
117 | printk(KERN_INFO "SDP3430 SoC init\n"); | |
118 | ||
119 | sdp3430_snd_device = platform_device_alloc("soc-audio", -1); | |
120 | if (!sdp3430_snd_device) { | |
121 | printk(KERN_ERR "Platform device allocation failed\n"); | |
122 | return -ENOMEM; | |
123 | } | |
124 | ||
125 | platform_set_drvdata(sdp3430_snd_device, &sdp3430_snd_devdata); | |
126 | sdp3430_snd_devdata.dev = &sdp3430_snd_device->dev; | |
127 | *(unsigned int *)sdp3430_dai.cpu_dai->private_data = 1; /* McBSP2 */ | |
128 | ||
129 | ret = platform_device_add(sdp3430_snd_device); | |
130 | if (ret) | |
131 | goto err1; | |
132 | ||
133 | return 0; | |
134 | ||
135 | err1: | |
136 | printk(KERN_ERR "Unable to add platform device\n"); | |
137 | platform_device_put(sdp3430_snd_device); | |
138 | ||
139 | return ret; | |
140 | } | |
141 | module_init(sdp3430_soc_init); | |
142 | ||
143 | static void __exit sdp3430_soc_exit(void) | |
144 | { | |
145 | platform_device_unregister(sdp3430_snd_device); | |
146 | } | |
147 | module_exit(sdp3430_soc_exit); | |
148 | ||
149 | MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>"); | |
150 | MODULE_DESCRIPTION("ALSA SoC SDP3430"); | |
151 | MODULE_LICENSE("GPL"); | |
152 |