2 * sdp4430.c -- SoC audio for TI OMAP4430 SDP
4 * Author: Misael Lopez Cruz <x0052729@ti.com>
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.
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.
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
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>
28 #include <asm/mach-types.h>
29 #include <plat/hardware.h>
34 #include "../codecs/twl6040.h"
36 static int twl6040_power_mode;
38 static int sdp4430_hw_params(struct snd_pcm_substream *substream,
39 struct snd_pcm_hw_params *params)
41 struct snd_soc_pcm_runtime *rtd = substream->private_data;
42 struct snd_soc_dai *codec_dai = rtd->codec_dai;
46 if (twl6040_power_mode) {
47 clk_id = TWL6040_SYSCLK_SEL_HPPLL;
50 clk_id = TWL6040_SYSCLK_SEL_LPPLL;
54 /* set the codec mclk */
55 ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
58 printk(KERN_ERR "can't set codec system clock\n");
64 static struct snd_soc_ops sdp4430_ops = {
65 .hw_params = sdp4430_hw_params,
68 static int sdp4430_get_power_mode(struct snd_kcontrol *kcontrol,
69 struct snd_ctl_elem_value *ucontrol)
71 ucontrol->value.integer.value[0] = twl6040_power_mode;
75 static int sdp4430_set_power_mode(struct snd_kcontrol *kcontrol,
76 struct snd_ctl_elem_value *ucontrol)
78 if (twl6040_power_mode == ucontrol->value.integer.value[0])
81 twl6040_power_mode = ucontrol->value.integer.value[0];
86 static const char *power_texts[] = {"Low-Power", "High-Performance"};
88 static const struct soc_enum sdp4430_enum[] = {
89 SOC_ENUM_SINGLE_EXT(2, power_texts),
92 static const struct snd_kcontrol_new sdp4430_controls[] = {
93 SOC_ENUM_EXT("TWL6040 Power Mode", sdp4430_enum[0],
94 sdp4430_get_power_mode, sdp4430_set_power_mode),
97 /* SDP4430 machine DAPM */
98 static const struct snd_soc_dapm_widget sdp4430_twl6040_dapm_widgets[] = {
99 SND_SOC_DAPM_MIC("Ext Mic", NULL),
100 SND_SOC_DAPM_SPK("Ext Spk", NULL),
101 SND_SOC_DAPM_MIC("Headset Mic", NULL),
102 SND_SOC_DAPM_HP("Headset Stereophone", NULL),
103 SND_SOC_DAPM_SPK("Earphone Spk", NULL),
104 SND_SOC_DAPM_INPUT("Aux/FM Stereo In"),
107 static const struct snd_soc_dapm_route audio_map[] = {
108 /* External Mics: MAINMIC, SUBMIC with bias*/
109 {"MAINMIC", NULL, "Main Mic Bias"},
110 {"SUBMIC", NULL, "Main Mic Bias"},
111 {"Main Mic Bias", NULL, "Ext Mic"},
113 /* External Speakers: HFL, HFR */
114 {"Ext Spk", NULL, "HFL"},
115 {"Ext Spk", NULL, "HFR"},
117 /* Headset Mic: HSMIC with bias */
118 {"HSMIC", NULL, "Headset Mic Bias"},
119 {"Headset Mic Bias", NULL, "Headset Mic"},
121 /* Headset Stereophone (Headphone): HSOL, HSOR */
122 {"Headset Stereophone", NULL, "HSOL"},
123 {"Headset Stereophone", NULL, "HSOR"},
125 /* Earphone speaker */
126 {"Earphone Spk", NULL, "EP"},
128 /* Aux/FM Stereo In: AFML, AFMR */
129 {"AFML", NULL, "Aux/FM Stereo In"},
130 {"AFMR", NULL, "Aux/FM Stereo In"},
133 static int sdp4430_twl6040_init(struct snd_soc_pcm_runtime *rtd)
135 struct snd_soc_codec *codec = rtd->codec;
136 struct snd_soc_dapm_context *dapm = &codec->dapm;
139 /* Add SDP4430 specific controls */
140 ret = snd_soc_add_controls(codec, sdp4430_controls,
141 ARRAY_SIZE(sdp4430_controls));
145 /* Add SDP4430 specific widgets */
146 ret = snd_soc_dapm_new_controls(dapm, sdp4430_twl6040_dapm_widgets,
147 ARRAY_SIZE(sdp4430_twl6040_dapm_widgets));
151 /* Set up SDP4430 specific audio path audio_map */
152 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
154 /* SDP4430 connected pins */
155 snd_soc_dapm_enable_pin(dapm, "Ext Mic");
156 snd_soc_dapm_enable_pin(dapm, "Ext Spk");
157 snd_soc_dapm_enable_pin(dapm, "AFML");
158 snd_soc_dapm_enable_pin(dapm, "AFMR");
159 snd_soc_dapm_enable_pin(dapm, "Headset Mic");
160 snd_soc_dapm_enable_pin(dapm, "Headset Stereophone");
162 ret = snd_soc_dapm_sync(dapm);
167 /* Digital audio interface glue - connects codec <--> CPU */
168 static struct snd_soc_dai_link sdp4430_dai = {
170 .stream_name = "TWL6040",
171 .cpu_dai_name ="omap-mcpdm-dai",
172 .codec_dai_name = "twl6040-hifi",
173 .platform_name = "omap-pcm-audio",
174 .codec_name = "twl6040-codec",
175 .init = sdp4430_twl6040_init,
179 /* Audio machine driver */
180 static struct snd_soc_card snd_soc_sdp4430 = {
182 .dai_link = &sdp4430_dai,
186 static struct platform_device *sdp4430_snd_device;
188 static int __init sdp4430_soc_init(void)
192 if (!machine_is_omap_4430sdp())
194 printk(KERN_INFO "SDP4430 SoC init\n");
196 sdp4430_snd_device = platform_device_alloc("soc-audio", -1);
197 if (!sdp4430_snd_device) {
198 printk(KERN_ERR "Platform device allocation failed\n");
202 platform_set_drvdata(sdp4430_snd_device, &snd_soc_sdp4430);
204 ret = platform_device_add(sdp4430_snd_device);
208 /* Codec starts in HP mode */
209 twl6040_power_mode = 1;
214 printk(KERN_ERR "Unable to add platform device\n");
215 platform_device_put(sdp4430_snd_device);
218 module_init(sdp4430_soc_init);
220 static void __exit sdp4430_soc_exit(void)
222 platform_device_unregister(sdp4430_snd_device);
224 module_exit(sdp4430_soc_exit);
226 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
227 MODULE_DESCRIPTION("ALSA SoC SDP4430");
228 MODULE_LICENSE("GPL");