1 /*
2 * sdp3430.c -- SoC audio for TI OMAP3430 SDP
3 *
4 * Author: Misael Lopez Cruz <x0052729@ti.com>
5 *
6 * Based on:
7 * Author: Steve Sakoman <steve@sakoman.com>
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * version 2 as published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
21 * 02110-1301 USA
22 *
23 */
24
25 #include <linux/clk.h>
26 #include <linux/platform_device.h>
27 #include <linux/i2c/twl.h>
28 #include <sound/core.h>
29 #include <sound/pcm.h>
30 #include <sound/soc.h>
31 #include <sound/jack.h>
32
33 #include <asm/mach-types.h>
34 #include <mach/hardware.h>
35 #include <mach/gpio.h>
36 #include <plat/mcbsp.h>
37
38 /* Register descriptions for twl4030 codec part */
39 #include <linux/mfd/twl4030-audio.h>
40 #include <linux/module.h>
41
42 #include "omap-mcbsp.h"
43 #include "omap-pcm.h"
44
45 /* TWL4030 PMBR1 Register */
46 #define TWL4030_INTBR_PMBR1 0x0D
47 /* TWL4030 PMBR1 Register GPIO6 mux bit */
48 #define TWL4030_GPIO6_PWM0_MUTE(value) (value << 2)
49
50 static struct snd_soc_card snd_soc_sdp3430;
51
sdp3430_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)52 static int sdp3430_hw_params(struct snd_pcm_substream *substream,
53 struct snd_pcm_hw_params *params)
54 {
55 struct snd_soc_pcm_runtime *rtd = substream->private_data;
56 struct snd_soc_dai *codec_dai = rtd->codec_dai;
57 int ret;
58
59 /* Set the codec system clock for DAC and ADC */
60 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
61 SND_SOC_CLOCK_IN);
62 if (ret < 0) {
63 printk(KERN_ERR "can't set codec system clock\n");
64 return ret;
65 }
66
67 return 0;
68 }
69
70 static struct snd_soc_ops sdp3430_ops = {
71 .hw_params = sdp3430_hw_params,
72 };
73
74 /* Headset jack */
75 static struct snd_soc_jack hs_jack;
76
77 /* Headset jack detection DAPM pins */
78 static struct snd_soc_jack_pin hs_jack_pins[] = {
79 {
80 .pin = "Headset Mic",
81 .mask = SND_JACK_MICROPHONE,
82 },
83 {
84 .pin = "Headset Stereophone",
85 .mask = SND_JACK_HEADPHONE,
86 },
87 };
88
89 /* Headset jack detection gpios */
90 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
91 {
92 .gpio = (OMAP_MAX_GPIO_LINES + 2),
93 .name = "hsdet-gpio",
94 .report = SND_JACK_HEADSET,
95 .debounce_time = 200,
96 },
97 };
98
99 /* SDP3430 machine DAPM */
100 static const struct snd_soc_dapm_widget sdp3430_twl4030_dapm_widgets[] = {
101 SND_SOC_DAPM_MIC("Ext Mic", NULL),
102 SND_SOC_DAPM_SPK("Ext Spk", NULL),
103 SND_SOC_DAPM_MIC("Headset Mic", NULL),
104 SND_SOC_DAPM_HP("Headset Stereophone", NULL),
105 };
106
107 static const struct snd_soc_dapm_route audio_map[] = {
108 /* External Mics: MAINMIC, SUBMIC with bias*/
109 {"MAINMIC", NULL, "Mic Bias 1"},
110 {"SUBMIC", NULL, "Mic Bias 2"},
111 {"Mic Bias 1", NULL, "Ext Mic"},
112 {"Mic Bias 2", NULL, "Ext Mic"},
113
114 /* External Speakers: HFL, HFR */
115 {"Ext Spk", NULL, "HFL"},
116 {"Ext Spk", NULL, "HFR"},
117
118 /* Headset Mic: HSMIC with bias */
119 {"HSMIC", NULL, "Headset Mic Bias"},
120 {"Headset Mic Bias", NULL, "Headset Mic"},
121
122 /* Headset Stereophone (Headphone): HSOL, HSOR */
123 {"Headset Stereophone", NULL, "HSOL"},
124 {"Headset Stereophone", NULL, "HSOR"},
125 };
126
sdp3430_twl4030_init(struct snd_soc_pcm_runtime * rtd)127 static int sdp3430_twl4030_init(struct snd_soc_pcm_runtime *rtd)
128 {
129 struct snd_soc_codec *codec = rtd->codec;
130 struct snd_soc_dapm_context *dapm = &codec->dapm;
131 int ret;
132
133 /* SDP3430 connected pins */
134 snd_soc_dapm_enable_pin(dapm, "Ext Mic");
135 snd_soc_dapm_enable_pin(dapm, "Ext Spk");
136 snd_soc_dapm_disable_pin(dapm, "Headset Mic");
137 snd_soc_dapm_disable_pin(dapm, "Headset Stereophone");
138
139 /* TWL4030 not connected pins */
140 snd_soc_dapm_nc_pin(dapm, "AUXL");
141 snd_soc_dapm_nc_pin(dapm, "AUXR");
142 snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
143 snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
144 snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");
145
146 snd_soc_dapm_nc_pin(dapm, "OUTL");
147 snd_soc_dapm_nc_pin(dapm, "OUTR");
148 snd_soc_dapm_nc_pin(dapm, "EARPIECE");
149 snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
150 snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
151 snd_soc_dapm_nc_pin(dapm, "CARKITL");
152 snd_soc_dapm_nc_pin(dapm, "CARKITR");
153
154 /* Headset jack detection */
155 ret = snd_soc_jack_new(codec, "Headset Jack",
156 SND_JACK_HEADSET, &hs_jack);
157 if (ret)
158 return ret;
159
160 ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
161 hs_jack_pins);
162 if (ret)
163 return ret;
164
165 ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
166 hs_jack_gpios);
167
168 return ret;
169 }
170
sdp3430_twl4030_voice_init(struct snd_soc_pcm_runtime * rtd)171 static int sdp3430_twl4030_voice_init(struct snd_soc_pcm_runtime *rtd)
172 {
173 struct snd_soc_codec *codec = rtd->codec;
174 unsigned short reg;
175
176 /* Enable voice interface */
177 reg = codec->driver->read(codec, TWL4030_REG_VOICE_IF);
178 reg |= TWL4030_VIF_DIN_EN | TWL4030_VIF_DOUT_EN | TWL4030_VIF_EN;
179 codec->driver->write(codec, TWL4030_REG_VOICE_IF, reg);
180
181 return 0;
182 }
183
184
185 /* Digital audio interface glue - connects codec <--> CPU */
186 static struct snd_soc_dai_link sdp3430_dai[] = {
187 {
188 .name = "TWL4030 I2S",
189 .stream_name = "TWL4030 Audio",
190 .cpu_dai_name = "omap-mcbsp-dai.1",
191 .codec_dai_name = "twl4030-hifi",
192 .platform_name = "omap-pcm-audio",
193 .codec_name = "twl4030-codec",
194 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
195 SND_SOC_DAIFMT_CBM_CFM,
196 .init = sdp3430_twl4030_init,
197 .ops = &sdp3430_ops,
198 },
199 {
200 .name = "TWL4030 PCM",
201 .stream_name = "TWL4030 Voice",
202 .cpu_dai_name = "omap-mcbsp-dai.2",
203 .codec_dai_name = "twl4030-voice",
204 .platform_name = "omap-pcm-audio",
205 .codec_name = "twl4030-codec",
206 .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
207 SND_SOC_DAIFMT_CBM_CFM,
208 .init = sdp3430_twl4030_voice_init,
209 .ops = &sdp3430_ops,
210 },
211 };
212
213 /* Audio machine driver */
214 static struct snd_soc_card snd_soc_sdp3430 = {
215 .name = "SDP3430",
216 .owner = THIS_MODULE,
217 .dai_link = sdp3430_dai,
218 .num_links = ARRAY_SIZE(sdp3430_dai),
219
220 .dapm_widgets = sdp3430_twl4030_dapm_widgets,
221 .num_dapm_widgets = ARRAY_SIZE(sdp3430_twl4030_dapm_widgets),
222 .dapm_routes = audio_map,
223 .num_dapm_routes = ARRAY_SIZE(audio_map),
224 };
225
226 static struct platform_device *sdp3430_snd_device;
227
sdp3430_soc_init(void)228 static int __init sdp3430_soc_init(void)
229 {
230 int ret;
231 u8 pin_mux;
232
233 if (!machine_is_omap_3430sdp())
234 return -ENODEV;
235 printk(KERN_INFO "SDP3430 SoC init\n");
236
237 sdp3430_snd_device = platform_device_alloc("soc-audio", -1);
238 if (!sdp3430_snd_device) {
239 printk(KERN_ERR "Platform device allocation failed\n");
240 return -ENOMEM;
241 }
242
243 platform_set_drvdata(sdp3430_snd_device, &snd_soc_sdp3430);
244
245 /* Set TWL4030 GPIO6 as EXTMUTE signal */
246 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &pin_mux,
247 TWL4030_INTBR_PMBR1);
248 pin_mux &= ~TWL4030_GPIO6_PWM0_MUTE(0x03);
249 pin_mux |= TWL4030_GPIO6_PWM0_MUTE(0x02);
250 twl_i2c_write_u8(TWL4030_MODULE_INTBR, pin_mux,
251 TWL4030_INTBR_PMBR1);
252
253 ret = platform_device_add(sdp3430_snd_device);
254 if (ret)
255 goto err1;
256
257 return 0;
258
259 err1:
260 printk(KERN_ERR "Unable to add platform device\n");
261 platform_device_put(sdp3430_snd_device);
262
263 return ret;
264 }
265 module_init(sdp3430_soc_init);
266
sdp3430_soc_exit(void)267 static void __exit sdp3430_soc_exit(void)
268 {
269 snd_soc_jack_free_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
270 hs_jack_gpios);
271
272 platform_device_unregister(sdp3430_snd_device);
273 }
274 module_exit(sdp3430_soc_exit);
275
276 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
277 MODULE_DESCRIPTION("ALSA SoC SDP3430");
278 MODULE_LICENSE("GPL");
279
280