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-rw-r--r--sound/soc/omap/sdp4430.c228
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diff --git a/sound/soc/omap/sdp4430.c b/sound/soc/omap/sdp4430.c
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1/*
2 * sdp4430.c -- SoC audio for TI OMAP4430 SDP
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>
27#include <sound/soc-dapm.h>
28
29#include <asm/mach-types.h>
30#include <plat/hardware.h>
31#include <plat/mux.h>
32
33#include "mcpdm.h"
34#include "omap-mcpdm.h"
35#include "omap-pcm.h"
36#include "../codecs/twl6040.h"
37
38static int twl6040_power_mode;
39
40static int sdp4430_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;
44 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
45 int clk_id, freq;
46 int ret;
47
48 if (twl6040_power_mode) {
49 clk_id = TWL6040_SYSCLK_SEL_HPPLL;
50 freq = 38400000;
51 } else {
52 clk_id = TWL6040_SYSCLK_SEL_LPPLL;
53 freq = 32768;
54 }
55
56 /* set the codec mclk */
57 ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
58 SND_SOC_CLOCK_IN);
59 if (ret) {
60 printk(KERN_ERR "can't set codec system clock\n");
61 return ret;
62 }
63}
64
65static struct snd_soc_ops sdp4430_ops = {
66 .hw_params = sdp4430_hw_params,
67};
68
69static int sdp4430_get_power_mode(struct snd_kcontrol *kcontrol,
70 struct snd_ctl_elem_value *ucontrol)
71{
72 ucontrol->value.integer.value[0] = twl6040_power_mode;
73 return 0;
74}
75
76static int sdp4430_set_power_mode(struct snd_kcontrol *kcontrol,
77 struct snd_ctl_elem_value *ucontrol)
78{
79 if (twl6040_power_mode == ucontrol->value.integer.value[0])
80 return 0;
81
82 twl6040_power_mode = ucontrol->value.integer.value[0];
83
84 return 1;
85}
86
87static const char *power_texts[] = {"Low-Power", "High-Performance"};
88
89static const struct soc_enum sdp4430_enum[] = {
90 SOC_ENUM_SINGLE_EXT(2, power_texts),
91};
92
93static const struct snd_kcontrol_new sdp4430_controls[] = {
94 SOC_ENUM_EXT("TWL6040 Power Mode", sdp4430_enum[0],
95 sdp4430_get_power_mode, sdp4430_set_power_mode),
96};
97
98/* SDP4430 machine DAPM */
99static const struct snd_soc_dapm_widget sdp4430_twl6040_dapm_widgets[] = {
100 SND_SOC_DAPM_MIC("Ext Mic", NULL),
101 SND_SOC_DAPM_SPK("Ext Spk", NULL),
102 SND_SOC_DAPM_MIC("Headset Mic", NULL),
103 SND_SOC_DAPM_HP("Headset Stereophone", NULL),
104};
105
106static const struct snd_soc_dapm_route audio_map[] = {
107 /* External Mics: MAINMIC, SUBMIC with bias*/
108 {"MAINMIC", NULL, "Main Mic Bias"},
109 {"SUBMIC", NULL, "Main Mic Bias"},
110 {"Main Mic Bias", NULL, "Ext Mic"},
111
112 /* External Speakers: HFL, HFR */
113 {"Ext Spk", NULL, "HFL"},
114 {"Ext Spk", NULL, "HFR"},
115
116 /* Headset Mic: HSMIC with bias */
117 {"HSMIC", NULL, "Headset Mic Bias"},
118 {"Headset Mic Bias", NULL, "Headset Mic"},
119
120 /* Headset Stereophone (Headphone): HSOL, HSOR */
121 {"Headset Stereophone", NULL, "HSOL"},
122 {"Headset Stereophone", NULL, "HSOR"},
123};
124
125static int sdp4430_twl6040_init(struct snd_soc_codec *codec)
126{
127 int ret;
128
129 /* Add SDP4430 specific controls */
130 ret = snd_soc_add_controls(codec, sdp4430_controls,
131 ARRAY_SIZE(sdp4430_controls));
132 if (ret)
133 return ret;
134
135 /* Add SDP4430 specific widgets */
136 ret = snd_soc_dapm_new_controls(codec, sdp4430_twl6040_dapm_widgets,
137 ARRAY_SIZE(sdp4430_twl6040_dapm_widgets));
138 if (ret)
139 return ret;
140
141 /* Set up SDP4430 specific audio path audio_map */
142 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
143
144 /* SDP4430 connected pins */
145 snd_soc_dapm_enable_pin(codec, "Ext Mic");
146 snd_soc_dapm_enable_pin(codec, "Ext Spk");
147 snd_soc_dapm_enable_pin(codec, "Headset Mic");
148 snd_soc_dapm_enable_pin(codec, "Headset Stereophone");
149
150 /* TWL6040 not connected pins */
151 snd_soc_dapm_nc_pin(codec, "AFML");
152 snd_soc_dapm_nc_pin(codec, "AFMR");
153
154 ret = snd_soc_dapm_sync(codec);
155
156 return ret;
157}
158
159/* Digital audio interface glue - connects codec <--> CPU */
160static struct snd_soc_dai_link sdp4430_dai = {
161 .name = "TWL6040",
162 .stream_name = "TWL6040",
163 .cpu_dai = &omap_mcpdm_dai,
164 .codec_dai = &twl6040_dai,
165 .init = sdp4430_twl6040_init,
166};
167
168/* Audio machine driver */
169static struct snd_soc_card snd_soc_sdp4430 = {
170 .name = "SDP4430",
171 .platform = &omap_soc_platform,
172 .dai_link = &sdp4430_dai,
173 .num_links = 1,
174};
175
176/* Audio subsystem */
177static struct snd_soc_device sdp4430_snd_devdata = {
178 .card = &snd_soc_sdp4430,
179 .codec_dev = &soc_codec_dev_twl6040,
180};
181
182static struct platform_device *sdp4430_snd_device;
183
184static int __init sdp4430_soc_init(void)
185{
186 int ret;
187
188 if (!machine_is_omap_4430sdp()) {
189 pr_debug("Not SDP4430!\n");
190 return -ENODEV;
191 }
192 printk(KERN_INFO "SDP4430 SoC init\n");
193
194 sdp4430_snd_device = platform_device_alloc("soc-audio", -1);
195 if (!sdp4430_snd_device) {
196 printk(KERN_ERR "Platform device allocation failed\n");
197 return -ENOMEM;
198 }
199
200 platform_set_drvdata(sdp4430_snd_device, &sdp4430_snd_devdata);
201 sdp4430_snd_devdata.dev = &sdp4430_snd_device->dev;
202
203 ret = platform_device_add(sdp4430_snd_device);
204 if (ret)
205 goto err;
206
207 /* Codec starts in HP mode */
208 twl6040_power_mode = 1;
209
210 return 0;
211
212err:
213 printk(KERN_ERR "Unable to add platform device\n");
214 platform_device_put(sdp4430_snd_device);
215 return ret;
216}
217module_init(sdp4430_soc_init);
218
219static void __exit sdp4430_soc_exit(void)
220{
221 platform_device_unregister(sdp4430_snd_device);
222}
223module_exit(sdp4430_soc_exit);
224
225MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
226MODULE_DESCRIPTION("ALSA SoC SDP4430");
227MODULE_LICENSE("GPL");
228