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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> |
f0fba2ad | 36 | |
df205936 LCM |
37 | #include "omap-mcbsp.h" |
38 | #include "omap-pcm.h" | |
df205936 | 39 | |
1b6ebdd7 | 40 | #define ZOOM2_HEADSET_MUX_GPIO (OMAP_MAX_GPIO_LINES + 15) |
df205936 LCM |
41 | |
42 | static int zoom2_hw_params(struct snd_pcm_substream *substream, | |
43 | struct snd_pcm_hw_params *params) | |
44 | { | |
45 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad | 46 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
df205936 LCM |
47 | int ret; |
48 | ||
df205936 LCM |
49 | /* Set the codec system clock for DAC and ADC */ |
50 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000, | |
51 | SND_SOC_CLOCK_IN); | |
52 | if (ret < 0) { | |
53 | printk(KERN_ERR "can't set codec system clock\n"); | |
54 | return ret; | |
55 | } | |
56 | ||
57 | return 0; | |
58 | } | |
59 | ||
60 | static struct snd_soc_ops zoom2_ops = { | |
61 | .hw_params = zoom2_hw_params, | |
62 | }; | |
63 | ||
df205936 LCM |
64 | /* Zoom2 machine DAPM */ |
65 | static const struct snd_soc_dapm_widget zoom2_twl4030_dapm_widgets[] = { | |
66 | SND_SOC_DAPM_MIC("Ext Mic", NULL), | |
67 | SND_SOC_DAPM_SPK("Ext Spk", NULL), | |
68 | SND_SOC_DAPM_MIC("Headset Mic", NULL), | |
69 | SND_SOC_DAPM_HP("Headset Stereophone", NULL), | |
70 | SND_SOC_DAPM_LINE("Aux In", NULL), | |
71 | }; | |
72 | ||
73 | static const struct snd_soc_dapm_route audio_map[] = { | |
74 | /* External Mics: MAINMIC, SUBMIC with bias*/ | |
75 | {"MAINMIC", NULL, "Mic Bias 1"}, | |
76 | {"SUBMIC", NULL, "Mic Bias 2"}, | |
77 | {"Mic Bias 1", NULL, "Ext Mic"}, | |
78 | {"Mic Bias 2", NULL, "Ext Mic"}, | |
79 | ||
80 | /* External Speakers: HFL, HFR */ | |
81 | {"Ext Spk", NULL, "HFL"}, | |
82 | {"Ext Spk", NULL, "HFR"}, | |
83 | ||
84 | /* Headset Stereophone: HSOL, HSOR */ | |
85 | {"Headset Stereophone", NULL, "HSOL"}, | |
86 | {"Headset Stereophone", NULL, "HSOR"}, | |
87 | ||
88 | /* Headset Mic: HSMIC with bias */ | |
89 | {"HSMIC", NULL, "Headset Mic Bias"}, | |
90 | {"Headset Mic Bias", NULL, "Headset Mic"}, | |
91 | ||
92 | /* Aux In: AUXL, AUXR */ | |
93 | {"Aux In", NULL, "AUXL"}, | |
94 | {"Aux In", NULL, "AUXR"}, | |
95 | }; | |
96 | ||
f0fba2ad | 97 | static int zoom2_twl4030_init(struct snd_soc_pcm_runtime *rtd) |
df205936 | 98 | { |
f0fba2ad | 99 | struct snd_soc_codec *codec = rtd->codec; |
ce6120cc | 100 | struct snd_soc_dapm_context *dapm = &codec->dapm; |
df205936 LCM |
101 | int ret; |
102 | ||
103 | /* Add Zoom2 specific widgets */ | |
ce6120cc | 104 | ret = snd_soc_dapm_new_controls(dapm, zoom2_twl4030_dapm_widgets, |
df205936 LCM |
105 | ARRAY_SIZE(zoom2_twl4030_dapm_widgets)); |
106 | if (ret) | |
107 | return ret; | |
108 | ||
109 | /* Set up Zoom2 specific audio path audio_map */ | |
ce6120cc | 110 | snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map)); |
df205936 LCM |
111 | |
112 | /* Zoom2 connected pins */ | |
ce6120cc LG |
113 | snd_soc_dapm_enable_pin(dapm, "Ext Mic"); |
114 | snd_soc_dapm_enable_pin(dapm, "Ext Spk"); | |
115 | snd_soc_dapm_enable_pin(dapm, "Headset Mic"); | |
116 | snd_soc_dapm_enable_pin(dapm, "Headset Stereophone"); | |
117 | snd_soc_dapm_enable_pin(dapm, "Aux In"); | |
df205936 LCM |
118 | |
119 | /* TWL4030 not connected pins */ | |
ce6120cc LG |
120 | snd_soc_dapm_nc_pin(dapm, "CARKITMIC"); |
121 | snd_soc_dapm_nc_pin(dapm, "DIGIMIC0"); | |
122 | snd_soc_dapm_nc_pin(dapm, "DIGIMIC1"); | |
123 | snd_soc_dapm_nc_pin(dapm, "EARPIECE"); | |
124 | snd_soc_dapm_nc_pin(dapm, "PREDRIVEL"); | |
125 | snd_soc_dapm_nc_pin(dapm, "PREDRIVER"); | |
126 | snd_soc_dapm_nc_pin(dapm, "CARKITL"); | |
127 | snd_soc_dapm_nc_pin(dapm, "CARKITR"); | |
128 | ||
129 | ret = snd_soc_dapm_sync(dapm); | |
df205936 LCM |
130 | |
131 | return ret; | |
132 | } | |
133 | ||
f0fba2ad | 134 | static int zoom2_twl4030_voice_init(struct snd_soc_pcm_runtime *rtd) |
df205936 | 135 | { |
f0fba2ad | 136 | struct snd_soc_codec *codec = rtd->codec; |
df205936 LCM |
137 | unsigned short reg; |
138 | ||
139 | /* Enable voice interface */ | |
f0fba2ad | 140 | reg = codec->driver->read(codec, TWL4030_REG_VOICE_IF); |
df205936 | 141 | reg |= TWL4030_VIF_DIN_EN | TWL4030_VIF_DOUT_EN | TWL4030_VIF_EN; |
f0fba2ad | 142 | codec->driver->write(codec, TWL4030_REG_VOICE_IF, reg); |
df205936 LCM |
143 | |
144 | return 0; | |
145 | } | |
146 | ||
147 | /* Digital audio interface glue - connects codec <--> CPU */ | |
148 | static struct snd_soc_dai_link zoom2_dai[] = { | |
149 | { | |
150 | .name = "TWL4030 I2S", | |
151 | .stream_name = "TWL4030 Audio", | |
f0fba2ad LG |
152 | .cpu_dai_name = "omap-mcbsp-dai.1", |
153 | .codec_dai_name = "twl4030-hifi", | |
154 | .platform_name = "omap-pcm-audio", | |
155 | .codec_name = "twl4030-codec", | |
cf9feff2 JN |
156 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
157 | SND_SOC_DAIFMT_CBM_CFM, | |
df205936 LCM |
158 | .init = zoom2_twl4030_init, |
159 | .ops = &zoom2_ops, | |
160 | }, | |
161 | { | |
162 | .name = "TWL4030 PCM", | |
163 | .stream_name = "TWL4030 Voice", | |
f0fba2ad LG |
164 | .cpu_dai_name = "omap-mcbsp-dai.2", |
165 | .codec_dai_name = "twl4030-voice", | |
166 | .platform_name = "omap-pcm-audio", | |
167 | .codec_name = "twl4030-codec", | |
cf9feff2 JN |
168 | .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF | |
169 | SND_SOC_DAIFMT_CBM_CFM, | |
df205936 | 170 | .init = zoom2_twl4030_voice_init, |
a3c6dac2 | 171 | .ops = &zoom2_ops, |
df205936 LCM |
172 | }, |
173 | }; | |
174 | ||
175 | /* Audio machine driver */ | |
176 | static struct snd_soc_card snd_soc_zoom2 = { | |
177 | .name = "Zoom2", | |
df205936 LCM |
178 | .dai_link = zoom2_dai, |
179 | .num_links = ARRAY_SIZE(zoom2_dai), | |
180 | }; | |
181 | ||
df205936 LCM |
182 | static struct platform_device *zoom2_snd_device; |
183 | ||
184 | static int __init zoom2_soc_init(void) | |
185 | { | |
186 | int ret; | |
187 | ||
ec588ae6 | 188 | if (!machine_is_omap_zoom2()) |
df205936 | 189 | return -ENODEV; |
df205936 LCM |
190 | printk(KERN_INFO "Zoom2 SoC init\n"); |
191 | ||
192 | zoom2_snd_device = platform_device_alloc("soc-audio", -1); | |
193 | if (!zoom2_snd_device) { | |
194 | printk(KERN_ERR "Platform device allocation failed\n"); | |
195 | return -ENOMEM; | |
196 | } | |
197 | ||
f0fba2ad | 198 | platform_set_drvdata(zoom2_snd_device, &snd_soc_zoom2); |
df205936 LCM |
199 | ret = platform_device_add(zoom2_snd_device); |
200 | if (ret) | |
201 | goto err1; | |
202 | ||
203 | BUG_ON(gpio_request(ZOOM2_HEADSET_MUX_GPIO, "hs_mux") < 0); | |
204 | gpio_direction_output(ZOOM2_HEADSET_MUX_GPIO, 0); | |
205 | ||
1b6ebdd7 CVJ |
206 | BUG_ON(gpio_request(ZOOM2_HEADSET_EXTMUTE_GPIO, "ext_mute") < 0); |
207 | gpio_direction_output(ZOOM2_HEADSET_EXTMUTE_GPIO, 0); | |
208 | ||
df205936 LCM |
209 | return 0; |
210 | ||
211 | err1: | |
212 | printk(KERN_ERR "Unable to add platform device\n"); | |
213 | platform_device_put(zoom2_snd_device); | |
214 | ||
215 | return ret; | |
216 | } | |
217 | module_init(zoom2_soc_init); | |
218 | ||
219 | static void __exit zoom2_soc_exit(void) | |
220 | { | |
221 | gpio_free(ZOOM2_HEADSET_MUX_GPIO); | |
1b6ebdd7 | 222 | gpio_free(ZOOM2_HEADSET_EXTMUTE_GPIO); |
df205936 LCM |
223 | |
224 | platform_device_unregister(zoom2_snd_device); | |
225 | } | |
226 | module_exit(zoom2_soc_exit); | |
227 | ||
228 | MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>"); | |
229 | MODULE_DESCRIPTION("ALSA SoC Zoom2"); | |
230 | MODULE_LICENSE("GPL"); | |
231 |