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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> | |
24 | #include <sound/core.h> | |
25 | #include <sound/pcm.h> | |
26 | #include <sound/soc.h> | |
df205936 LCM |
27 | |
28 | #include <asm/mach-types.h> | |
29 | #include <mach/hardware.h> | |
30 | #include <mach/gpio.h> | |
f0fba2ad | 31 | #include <mach/board-zoom.h> |
ce491cf8 | 32 | #include <plat/mcbsp.h> |
df205936 | 33 | |
f0fba2ad | 34 | /* Register descriptions for twl4030 codec part */ |
57fe7251 | 35 | #include <linux/mfd/twl4030-audio.h> |
da155d5b | 36 | #include <linux/module.h> |
f0fba2ad | 37 | |
df205936 LCM |
38 | #include "omap-mcbsp.h" |
39 | #include "omap-pcm.h" | |
df205936 | 40 | |
1b6ebdd7 | 41 | #define ZOOM2_HEADSET_MUX_GPIO (OMAP_MAX_GPIO_LINES + 15) |
df205936 LCM |
42 | |
43 | static int zoom2_hw_params(struct snd_pcm_substream *substream, | |
44 | struct snd_pcm_hw_params *params) | |
45 | { | |
46 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad | 47 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
df205936 LCM |
48 | int ret; |
49 | ||
df205936 LCM |
50 | /* Set the codec system clock for DAC and ADC */ |
51 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000, | |
52 | SND_SOC_CLOCK_IN); | |
53 | if (ret < 0) { | |
54 | printk(KERN_ERR "can't set codec system clock\n"); | |
55 | return ret; | |
56 | } | |
57 | ||
58 | return 0; | |
59 | } | |
60 | ||
61 | static struct snd_soc_ops zoom2_ops = { | |
62 | .hw_params = zoom2_hw_params, | |
63 | }; | |
64 | ||
df205936 LCM |
65 | /* Zoom2 machine DAPM */ |
66 | static const struct snd_soc_dapm_widget zoom2_twl4030_dapm_widgets[] = { | |
67 | SND_SOC_DAPM_MIC("Ext Mic", NULL), | |
68 | SND_SOC_DAPM_SPK("Ext Spk", NULL), | |
69 | SND_SOC_DAPM_MIC("Headset Mic", NULL), | |
70 | SND_SOC_DAPM_HP("Headset Stereophone", NULL), | |
71 | SND_SOC_DAPM_LINE("Aux In", NULL), | |
72 | }; | |
73 | ||
74 | static const struct snd_soc_dapm_route audio_map[] = { | |
75 | /* External Mics: MAINMIC, SUBMIC with bias*/ | |
76 | {"MAINMIC", NULL, "Mic Bias 1"}, | |
77 | {"SUBMIC", NULL, "Mic Bias 2"}, | |
78 | {"Mic Bias 1", NULL, "Ext Mic"}, | |
79 | {"Mic Bias 2", NULL, "Ext Mic"}, | |
80 | ||
81 | /* External Speakers: HFL, HFR */ | |
82 | {"Ext Spk", NULL, "HFL"}, | |
83 | {"Ext Spk", NULL, "HFR"}, | |
84 | ||
85 | /* Headset Stereophone: HSOL, HSOR */ | |
86 | {"Headset Stereophone", NULL, "HSOL"}, | |
87 | {"Headset Stereophone", NULL, "HSOR"}, | |
88 | ||
89 | /* Headset Mic: HSMIC with bias */ | |
90 | {"HSMIC", NULL, "Headset Mic Bias"}, | |
91 | {"Headset Mic Bias", NULL, "Headset Mic"}, | |
92 | ||
93 | /* Aux In: AUXL, AUXR */ | |
94 | {"Aux In", NULL, "AUXL"}, | |
95 | {"Aux In", NULL, "AUXR"}, | |
96 | }; | |
97 | ||
f0fba2ad | 98 | static int zoom2_twl4030_init(struct snd_soc_pcm_runtime *rtd) |
df205936 | 99 | { |
f0fba2ad | 100 | struct snd_soc_codec *codec = rtd->codec; |
ce6120cc | 101 | struct snd_soc_dapm_context *dapm = &codec->dapm; |
df205936 | 102 | |
df205936 | 103 | /* TWL4030 not connected pins */ |
ce6120cc LG |
104 | snd_soc_dapm_nc_pin(dapm, "CARKITMIC"); |
105 | snd_soc_dapm_nc_pin(dapm, "DIGIMIC0"); | |
106 | snd_soc_dapm_nc_pin(dapm, "DIGIMIC1"); | |
107 | snd_soc_dapm_nc_pin(dapm, "EARPIECE"); | |
108 | snd_soc_dapm_nc_pin(dapm, "PREDRIVEL"); | |
109 | snd_soc_dapm_nc_pin(dapm, "PREDRIVER"); | |
110 | snd_soc_dapm_nc_pin(dapm, "CARKITL"); | |
111 | snd_soc_dapm_nc_pin(dapm, "CARKITR"); | |
112 | ||
cb424877 | 113 | return 0; |
df205936 LCM |
114 | } |
115 | ||
f0fba2ad | 116 | static int zoom2_twl4030_voice_init(struct snd_soc_pcm_runtime *rtd) |
df205936 | 117 | { |
f0fba2ad | 118 | struct snd_soc_codec *codec = rtd->codec; |
df205936 LCM |
119 | unsigned short reg; |
120 | ||
121 | /* Enable voice interface */ | |
f0fba2ad | 122 | reg = codec->driver->read(codec, TWL4030_REG_VOICE_IF); |
df205936 | 123 | reg |= TWL4030_VIF_DIN_EN | TWL4030_VIF_DOUT_EN | TWL4030_VIF_EN; |
f0fba2ad | 124 | codec->driver->write(codec, TWL4030_REG_VOICE_IF, reg); |
df205936 LCM |
125 | |
126 | return 0; | |
127 | } | |
128 | ||
129 | /* Digital audio interface glue - connects codec <--> CPU */ | |
130 | static struct snd_soc_dai_link zoom2_dai[] = { | |
131 | { | |
132 | .name = "TWL4030 I2S", | |
133 | .stream_name = "TWL4030 Audio", | |
45656b44 | 134 | .cpu_dai_name = "omap-mcbsp.2", |
f0fba2ad LG |
135 | .codec_dai_name = "twl4030-hifi", |
136 | .platform_name = "omap-pcm-audio", | |
137 | .codec_name = "twl4030-codec", | |
cf9feff2 JN |
138 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
139 | SND_SOC_DAIFMT_CBM_CFM, | |
df205936 LCM |
140 | .init = zoom2_twl4030_init, |
141 | .ops = &zoom2_ops, | |
142 | }, | |
143 | { | |
144 | .name = "TWL4030 PCM", | |
145 | .stream_name = "TWL4030 Voice", | |
45656b44 | 146 | .cpu_dai_name = "omap-mcbsp.3", |
f0fba2ad LG |
147 | .codec_dai_name = "twl4030-voice", |
148 | .platform_name = "omap-pcm-audio", | |
149 | .codec_name = "twl4030-codec", | |
cf9feff2 JN |
150 | .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF | |
151 | SND_SOC_DAIFMT_CBM_CFM, | |
df205936 | 152 | .init = zoom2_twl4030_voice_init, |
a3c6dac2 | 153 | .ops = &zoom2_ops, |
df205936 LCM |
154 | }, |
155 | }; | |
156 | ||
157 | /* Audio machine driver */ | |
158 | static struct snd_soc_card snd_soc_zoom2 = { | |
159 | .name = "Zoom2", | |
b425b884 | 160 | .owner = THIS_MODULE, |
df205936 LCM |
161 | .dai_link = zoom2_dai, |
162 | .num_links = ARRAY_SIZE(zoom2_dai), | |
1083dbd1 PU |
163 | |
164 | .dapm_widgets = zoom2_twl4030_dapm_widgets, | |
165 | .num_dapm_widgets = ARRAY_SIZE(zoom2_twl4030_dapm_widgets), | |
166 | .dapm_routes = audio_map, | |
167 | .num_dapm_routes = ARRAY_SIZE(audio_map), | |
df205936 LCM |
168 | }; |
169 | ||
df205936 LCM |
170 | static struct platform_device *zoom2_snd_device; |
171 | ||
172 | static int __init zoom2_soc_init(void) | |
173 | { | |
174 | int ret; | |
175 | ||
ec588ae6 | 176 | if (!machine_is_omap_zoom2()) |
df205936 | 177 | return -ENODEV; |
df205936 LCM |
178 | printk(KERN_INFO "Zoom2 SoC init\n"); |
179 | ||
180 | zoom2_snd_device = platform_device_alloc("soc-audio", -1); | |
181 | if (!zoom2_snd_device) { | |
182 | printk(KERN_ERR "Platform device allocation failed\n"); | |
183 | return -ENOMEM; | |
184 | } | |
185 | ||
f0fba2ad | 186 | platform_set_drvdata(zoom2_snd_device, &snd_soc_zoom2); |
df205936 LCM |
187 | ret = platform_device_add(zoom2_snd_device); |
188 | if (ret) | |
189 | goto err1; | |
190 | ||
191 | BUG_ON(gpio_request(ZOOM2_HEADSET_MUX_GPIO, "hs_mux") < 0); | |
192 | gpio_direction_output(ZOOM2_HEADSET_MUX_GPIO, 0); | |
193 | ||
1b6ebdd7 CVJ |
194 | BUG_ON(gpio_request(ZOOM2_HEADSET_EXTMUTE_GPIO, "ext_mute") < 0); |
195 | gpio_direction_output(ZOOM2_HEADSET_EXTMUTE_GPIO, 0); | |
196 | ||
df205936 LCM |
197 | return 0; |
198 | ||
199 | err1: | |
200 | printk(KERN_ERR "Unable to add platform device\n"); | |
201 | platform_device_put(zoom2_snd_device); | |
202 | ||
203 | return ret; | |
204 | } | |
205 | module_init(zoom2_soc_init); | |
206 | ||
207 | static void __exit zoom2_soc_exit(void) | |
208 | { | |
209 | gpio_free(ZOOM2_HEADSET_MUX_GPIO); | |
1b6ebdd7 | 210 | gpio_free(ZOOM2_HEADSET_EXTMUTE_GPIO); |
df205936 LCM |
211 | |
212 | platform_device_unregister(zoom2_snd_device); | |
213 | } | |
214 | module_exit(zoom2_soc_exit); | |
215 | ||
216 | MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>"); | |
217 | MODULE_DESCRIPTION("ALSA SoC Zoom2"); | |
218 | MODULE_LICENSE("GPL"); | |
219 |