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df205936 LCM |
1 | /* |
2 | * zoom2.c -- SoC audio for Zoom2 | |
3 | * | |
4 | * Author: Misael Lopez Cruz <x0052729@ti.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> | |
257d36fd | 24 | #include <linux/gpio.h> |
df205936 LCM |
25 | #include <sound/core.h> |
26 | #include <sound/pcm.h> | |
27 | #include <sound/soc.h> | |
df205936 LCM |
28 | |
29 | #include <asm/mach-types.h> | |
2203747c | 30 | #include <linux/platform_data/asoc-ti-mcbsp.h> |
257d36fd | 31 | #include <linux/platform_data/gpio-omap.h> |
df205936 | 32 | |
f0fba2ad | 33 | /* Register descriptions for twl4030 codec part */ |
57fe7251 | 34 | #include <linux/mfd/twl4030-audio.h> |
da155d5b | 35 | #include <linux/module.h> |
f0fba2ad | 36 | |
df205936 LCM |
37 | #include "omap-mcbsp.h" |
38 | #include "omap-pcm.h" | |
df205936 | 39 | |
df205936 LCM |
40 | static int zoom2_hw_params(struct snd_pcm_substream *substream, |
41 | struct snd_pcm_hw_params *params) | |
42 | { | |
43 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad | 44 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
df205936 LCM |
45 | int ret; |
46 | ||
df205936 LCM |
47 | /* Set the codec system clock for DAC and ADC */ |
48 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000, | |
49 | SND_SOC_CLOCK_IN); | |
50 | if (ret < 0) { | |
51 | printk(KERN_ERR "can't set codec system clock\n"); | |
52 | return ret; | |
53 | } | |
54 | ||
55 | return 0; | |
56 | } | |
57 | ||
58 | static struct snd_soc_ops zoom2_ops = { | |
59 | .hw_params = zoom2_hw_params, | |
60 | }; | |
61 | ||
df205936 LCM |
62 | /* Zoom2 machine DAPM */ |
63 | static const struct snd_soc_dapm_widget zoom2_twl4030_dapm_widgets[] = { | |
64 | SND_SOC_DAPM_MIC("Ext Mic", NULL), | |
65 | SND_SOC_DAPM_SPK("Ext Spk", NULL), | |
66 | SND_SOC_DAPM_MIC("Headset Mic", NULL), | |
67 | SND_SOC_DAPM_HP("Headset Stereophone", NULL), | |
68 | SND_SOC_DAPM_LINE("Aux In", NULL), | |
69 | }; | |
70 | ||
71 | static const struct snd_soc_dapm_route audio_map[] = { | |
72 | /* External Mics: MAINMIC, SUBMIC with bias*/ | |
73 | {"MAINMIC", NULL, "Mic Bias 1"}, | |
74 | {"SUBMIC", NULL, "Mic Bias 2"}, | |
75 | {"Mic Bias 1", NULL, "Ext Mic"}, | |
76 | {"Mic Bias 2", NULL, "Ext Mic"}, | |
77 | ||
78 | /* External Speakers: HFL, HFR */ | |
79 | {"Ext Spk", NULL, "HFL"}, | |
80 | {"Ext Spk", NULL, "HFR"}, | |
81 | ||
82 | /* Headset Stereophone: HSOL, HSOR */ | |
83 | {"Headset Stereophone", NULL, "HSOL"}, | |
84 | {"Headset Stereophone", NULL, "HSOR"}, | |
85 | ||
86 | /* Headset Mic: HSMIC with bias */ | |
87 | {"HSMIC", NULL, "Headset Mic Bias"}, | |
88 | {"Headset Mic Bias", NULL, "Headset Mic"}, | |
89 | ||
90 | /* Aux In: AUXL, AUXR */ | |
91 | {"Aux In", NULL, "AUXL"}, | |
92 | {"Aux In", NULL, "AUXR"}, | |
93 | }; | |
94 | ||
f0fba2ad | 95 | static int zoom2_twl4030_init(struct snd_soc_pcm_runtime *rtd) |
df205936 | 96 | { |
f0fba2ad | 97 | struct snd_soc_codec *codec = rtd->codec; |
ce6120cc | 98 | struct snd_soc_dapm_context *dapm = &codec->dapm; |
df205936 | 99 | |
df205936 | 100 | /* TWL4030 not connected pins */ |
ce6120cc LG |
101 | snd_soc_dapm_nc_pin(dapm, "CARKITMIC"); |
102 | snd_soc_dapm_nc_pin(dapm, "DIGIMIC0"); | |
103 | snd_soc_dapm_nc_pin(dapm, "DIGIMIC1"); | |
104 | snd_soc_dapm_nc_pin(dapm, "EARPIECE"); | |
105 | snd_soc_dapm_nc_pin(dapm, "PREDRIVEL"); | |
106 | snd_soc_dapm_nc_pin(dapm, "PREDRIVER"); | |
107 | snd_soc_dapm_nc_pin(dapm, "CARKITL"); | |
108 | snd_soc_dapm_nc_pin(dapm, "CARKITR"); | |
109 | ||
cb424877 | 110 | return 0; |
df205936 LCM |
111 | } |
112 | ||
f0fba2ad | 113 | static int zoom2_twl4030_voice_init(struct snd_soc_pcm_runtime *rtd) |
df205936 | 114 | { |
f0fba2ad | 115 | struct snd_soc_codec *codec = rtd->codec; |
df205936 LCM |
116 | unsigned short reg; |
117 | ||
118 | /* Enable voice interface */ | |
f0fba2ad | 119 | reg = codec->driver->read(codec, TWL4030_REG_VOICE_IF); |
df205936 | 120 | reg |= TWL4030_VIF_DIN_EN | TWL4030_VIF_DOUT_EN | TWL4030_VIF_EN; |
f0fba2ad | 121 | codec->driver->write(codec, TWL4030_REG_VOICE_IF, reg); |
df205936 LCM |
122 | |
123 | return 0; | |
124 | } | |
125 | ||
126 | /* Digital audio interface glue - connects codec <--> CPU */ | |
127 | static struct snd_soc_dai_link zoom2_dai[] = { | |
128 | { | |
129 | .name = "TWL4030 I2S", | |
130 | .stream_name = "TWL4030 Audio", | |
45656b44 | 131 | .cpu_dai_name = "omap-mcbsp.2", |
f0fba2ad LG |
132 | .codec_dai_name = "twl4030-hifi", |
133 | .platform_name = "omap-pcm-audio", | |
134 | .codec_name = "twl4030-codec", | |
cf9feff2 JN |
135 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
136 | SND_SOC_DAIFMT_CBM_CFM, | |
df205936 LCM |
137 | .init = zoom2_twl4030_init, |
138 | .ops = &zoom2_ops, | |
139 | }, | |
140 | { | |
141 | .name = "TWL4030 PCM", | |
142 | .stream_name = "TWL4030 Voice", | |
45656b44 | 143 | .cpu_dai_name = "omap-mcbsp.3", |
f0fba2ad LG |
144 | .codec_dai_name = "twl4030-voice", |
145 | .platform_name = "omap-pcm-audio", | |
146 | .codec_name = "twl4030-codec", | |
cf9feff2 JN |
147 | .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF | |
148 | SND_SOC_DAIFMT_CBM_CFM, | |
df205936 | 149 | .init = zoom2_twl4030_voice_init, |
a3c6dac2 | 150 | .ops = &zoom2_ops, |
df205936 LCM |
151 | }, |
152 | }; | |
153 | ||
154 | /* Audio machine driver */ | |
155 | static struct snd_soc_card snd_soc_zoom2 = { | |
156 | .name = "Zoom2", | |
b425b884 | 157 | .owner = THIS_MODULE, |
df205936 LCM |
158 | .dai_link = zoom2_dai, |
159 | .num_links = ARRAY_SIZE(zoom2_dai), | |
1083dbd1 PU |
160 | |
161 | .dapm_widgets = zoom2_twl4030_dapm_widgets, | |
162 | .num_dapm_widgets = ARRAY_SIZE(zoom2_twl4030_dapm_widgets), | |
163 | .dapm_routes = audio_map, | |
164 | .num_dapm_routes = ARRAY_SIZE(audio_map), | |
df205936 LCM |
165 | }; |
166 | ||
df205936 LCM |
167 | static struct platform_device *zoom2_snd_device; |
168 | ||
169 | static int __init zoom2_soc_init(void) | |
170 | { | |
171 | int ret; | |
172 | ||
ec588ae6 | 173 | if (!machine_is_omap_zoom2()) |
df205936 | 174 | return -ENODEV; |
df205936 LCM |
175 | printk(KERN_INFO "Zoom2 SoC init\n"); |
176 | ||
177 | zoom2_snd_device = platform_device_alloc("soc-audio", -1); | |
178 | if (!zoom2_snd_device) { | |
179 | printk(KERN_ERR "Platform device allocation failed\n"); | |
180 | return -ENOMEM; | |
181 | } | |
182 | ||
f0fba2ad | 183 | platform_set_drvdata(zoom2_snd_device, &snd_soc_zoom2); |
df205936 LCM |
184 | ret = platform_device_add(zoom2_snd_device); |
185 | if (ret) | |
186 | goto err1; | |
187 | ||
df205936 LCM |
188 | return 0; |
189 | ||
190 | err1: | |
191 | printk(KERN_ERR "Unable to add platform device\n"); | |
192 | platform_device_put(zoom2_snd_device); | |
193 | ||
194 | return ret; | |
195 | } | |
196 | module_init(zoom2_soc_init); | |
197 | ||
198 | static void __exit zoom2_soc_exit(void) | |
199 | { | |
df205936 LCM |
200 | platform_device_unregister(zoom2_snd_device); |
201 | } | |
202 | module_exit(zoom2_soc_exit); | |
203 | ||
204 | MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>"); | |
205 | MODULE_DESCRIPTION("ALSA SoC Zoom2"); | |
206 | MODULE_LICENSE("GPL"); | |
207 |