tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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-codec.h>
40
41#include "omap-mcbsp.h"
42#include "omap-pcm.h"
43
44/* TWL4030 PMBR1 Register */
45#define TWL4030_INTBR_PMBR1 0x0D
46/* TWL4030 PMBR1 Register GPIO6 mux bit */
47#define TWL4030_GPIO6_PWM0_MUTE(value) (value << 2)
48
49static struct snd_soc_card snd_soc_sdp3430;
50
51static int sdp3430_hw_params(struct snd_pcm_substream *substream,
52 struct snd_pcm_hw_params *params)
53{
54 struct snd_soc_pcm_runtime *rtd = substream->private_data;
55 struct snd_soc_dai *codec_dai = rtd->codec_dai;
56 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
57 int ret;
58
59 /* Set codec DAI configuration */
60 ret = snd_soc_dai_set_fmt(codec_dai,
61 SND_SOC_DAIFMT_I2S |
62 SND_SOC_DAIFMT_NB_NF |
63 SND_SOC_DAIFMT_CBM_CFM);
64 if (ret < 0) {
65 printk(KERN_ERR "can't set codec DAI configuration\n");
66 return ret;
67 }
68
69 /* Set cpu DAI configuration */
70 ret = snd_soc_dai_set_fmt(cpu_dai,
71 SND_SOC_DAIFMT_I2S |
72 SND_SOC_DAIFMT_NB_NF |
73 SND_SOC_DAIFMT_CBM_CFM);
74 if (ret < 0) {
75 printk(KERN_ERR "can't set cpu DAI configuration\n");
76 return ret;
77 }
78
79 /* Set the codec system clock for DAC and ADC */
80 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
81 SND_SOC_CLOCK_IN);
82 if (ret < 0) {
83 printk(KERN_ERR "can't set codec system clock\n");
84 return ret;
85 }
86
87 return 0;
88}
89
90static struct snd_soc_ops sdp3430_ops = {
91 .hw_params = sdp3430_hw_params,
92};
93
94static int sdp3430_hw_voice_params(struct snd_pcm_substream *substream,
95 struct snd_pcm_hw_params *params)
96{
97 struct snd_soc_pcm_runtime *rtd = substream->private_data;
98 struct snd_soc_dai *codec_dai = rtd->codec_dai;
99 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
100 int ret;
101
102 /* Set codec DAI configuration */
103 ret = snd_soc_dai_set_fmt(codec_dai,
104 SND_SOC_DAIFMT_DSP_A |
105 SND_SOC_DAIFMT_IB_NF |
106 SND_SOC_DAIFMT_CBM_CFM);
107 if (ret) {
108 printk(KERN_ERR "can't set codec DAI configuration\n");
109 return ret;
110 }
111
112 /* Set cpu DAI configuration */
113 ret = snd_soc_dai_set_fmt(cpu_dai,
114 SND_SOC_DAIFMT_DSP_A |
115 SND_SOC_DAIFMT_IB_NF |
116 SND_SOC_DAIFMT_CBM_CFM);
117 if (ret < 0) {
118 printk(KERN_ERR "can't set cpu DAI configuration\n");
119 return ret;
120 }
121
122 /* Set the codec system clock for DAC and ADC */
123 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
124 SND_SOC_CLOCK_IN);
125 if (ret < 0) {
126 printk(KERN_ERR "can't set codec system clock\n");
127 return ret;
128 }
129
130 return 0;
131}
132
133static struct snd_soc_ops sdp3430_voice_ops = {
134 .hw_params = sdp3430_hw_voice_params,
135};
136
137/* Headset jack */
138static struct snd_soc_jack hs_jack;
139
140/* Headset jack detection DAPM pins */
141static struct snd_soc_jack_pin hs_jack_pins[] = {
142 {
143 .pin = "Headset Mic",
144 .mask = SND_JACK_MICROPHONE,
145 },
146 {
147 .pin = "Headset Stereophone",
148 .mask = SND_JACK_HEADPHONE,
149 },
150};
151
152/* Headset jack detection gpios */
153static struct snd_soc_jack_gpio hs_jack_gpios[] = {
154 {
155 .gpio = (OMAP_MAX_GPIO_LINES + 2),
156 .name = "hsdet-gpio",
157 .report = SND_JACK_HEADSET,
158 .debounce_time = 200,
159 },
160};
161
162/* SDP3430 machine DAPM */
163static const struct snd_soc_dapm_widget sdp3430_twl4030_dapm_widgets[] = {
164 SND_SOC_DAPM_MIC("Ext Mic", NULL),
165 SND_SOC_DAPM_SPK("Ext Spk", NULL),
166 SND_SOC_DAPM_MIC("Headset Mic", NULL),
167 SND_SOC_DAPM_HP("Headset Stereophone", NULL),
168};
169
170static const struct snd_soc_dapm_route audio_map[] = {
171 /* External Mics: MAINMIC, SUBMIC with bias*/
172 {"MAINMIC", NULL, "Mic Bias 1"},
173 {"SUBMIC", NULL, "Mic Bias 2"},
174 {"Mic Bias 1", NULL, "Ext Mic"},
175 {"Mic Bias 2", NULL, "Ext Mic"},
176
177 /* External Speakers: HFL, HFR */
178 {"Ext Spk", NULL, "HFL"},
179 {"Ext Spk", NULL, "HFR"},
180
181 /* Headset Mic: HSMIC with bias */
182 {"HSMIC", NULL, "Headset Mic Bias"},
183 {"Headset Mic Bias", NULL, "Headset Mic"},
184
185 /* Headset Stereophone (Headphone): HSOL, HSOR */
186 {"Headset Stereophone", NULL, "HSOL"},
187 {"Headset Stereophone", NULL, "HSOR"},
188};
189
190static int sdp3430_twl4030_init(struct snd_soc_pcm_runtime *rtd)
191{
192 struct snd_soc_codec *codec = rtd->codec;
193 struct snd_soc_dapm_context *dapm = &codec->dapm;
194 int ret;
195
196 /* Add SDP3430 specific widgets */
197 ret = snd_soc_dapm_new_controls(dapm, sdp3430_twl4030_dapm_widgets,
198 ARRAY_SIZE(sdp3430_twl4030_dapm_widgets));
199 if (ret)
200 return ret;
201
202 /* Set up SDP3430 specific audio path audio_map */
203 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
204
205 /* SDP3430 connected pins */
206 snd_soc_dapm_enable_pin(dapm, "Ext Mic");
207 snd_soc_dapm_enable_pin(dapm, "Ext Spk");
208 snd_soc_dapm_disable_pin(dapm, "Headset Mic");
209 snd_soc_dapm_disable_pin(dapm, "Headset Stereophone");
210
211 /* TWL4030 not connected pins */
212 snd_soc_dapm_nc_pin(dapm, "AUXL");
213 snd_soc_dapm_nc_pin(dapm, "AUXR");
214 snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
215 snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
216 snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");
217
218 snd_soc_dapm_nc_pin(dapm, "OUTL");
219 snd_soc_dapm_nc_pin(dapm, "OUTR");
220 snd_soc_dapm_nc_pin(dapm, "EARPIECE");
221 snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
222 snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
223 snd_soc_dapm_nc_pin(dapm, "CARKITL");
224 snd_soc_dapm_nc_pin(dapm, "CARKITR");
225
226 ret = snd_soc_dapm_sync(dapm);
227 if (ret)
228 return ret;
229
230 /* Headset jack detection */
231 ret = snd_soc_jack_new(codec, "Headset Jack",
232 SND_JACK_HEADSET, &hs_jack);
233 if (ret)
234 return ret;
235
236 ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
237 hs_jack_pins);
238 if (ret)
239 return ret;
240
241 ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
242 hs_jack_gpios);
243
244 return ret;
245}
246
247static int sdp3430_twl4030_voice_init(struct snd_soc_pcm_runtime *rtd)
248{
249 struct snd_soc_codec *codec = rtd->codec;
250 unsigned short reg;
251
252 /* Enable voice interface */
253 reg = codec->driver->read(codec, TWL4030_REG_VOICE_IF);
254 reg |= TWL4030_VIF_DIN_EN | TWL4030_VIF_DOUT_EN | TWL4030_VIF_EN;
255 codec->driver->write(codec, TWL4030_REG_VOICE_IF, reg);
256
257 return 0;
258}
259
260
261/* Digital audio interface glue - connects codec <--> CPU */
262static struct snd_soc_dai_link sdp3430_dai[] = {
263 {
264 .name = "TWL4030 I2S",
265 .stream_name = "TWL4030 Audio",
266 .cpu_dai_name = "omap-mcbsp-dai.1",
267 .codec_dai_name = "twl4030-hifi",
268 .platform_name = "omap-pcm-audio",
269 .codec_name = "twl4030-codec",
270 .init = sdp3430_twl4030_init,
271 .ops = &sdp3430_ops,
272 },
273 {
274 .name = "TWL4030 PCM",
275 .stream_name = "TWL4030 Voice",
276 .cpu_dai_name = "omap-mcbsp-dai.2",
277 .codec_dai_name = "twl4030-voice",
278 .platform_name = "omap-pcm-audio",
279 .codec_name = "twl4030-codec",
280 .init = sdp3430_twl4030_voice_init,
281 .ops = &sdp3430_voice_ops,
282 },
283};
284
285/* Audio machine driver */
286static struct snd_soc_card snd_soc_sdp3430 = {
287 .name = "SDP3430",
288 .dai_link = sdp3430_dai,
289 .num_links = ARRAY_SIZE(sdp3430_dai),
290};
291
292static struct platform_device *sdp3430_snd_device;
293
294static int __init sdp3430_soc_init(void)
295{
296 int ret;
297 u8 pin_mux;
298
299 if (!machine_is_omap_3430sdp())
300 return -ENODEV;
301 printk(KERN_INFO "SDP3430 SoC init\n");
302
303 sdp3430_snd_device = platform_device_alloc("soc-audio", -1);
304 if (!sdp3430_snd_device) {
305 printk(KERN_ERR "Platform device allocation failed\n");
306 return -ENOMEM;
307 }
308
309 platform_set_drvdata(sdp3430_snd_device, &snd_soc_sdp3430);
310
311 /* Set TWL4030 GPIO6 as EXTMUTE signal */
312 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &pin_mux,
313 TWL4030_INTBR_PMBR1);
314 pin_mux &= ~TWL4030_GPIO6_PWM0_MUTE(0x03);
315 pin_mux |= TWL4030_GPIO6_PWM0_MUTE(0x02);
316 twl_i2c_write_u8(TWL4030_MODULE_INTBR, pin_mux,
317 TWL4030_INTBR_PMBR1);
318
319 ret = platform_device_add(sdp3430_snd_device);
320 if (ret)
321 goto err1;
322
323 return 0;
324
325err1:
326 printk(KERN_ERR "Unable to add platform device\n");
327 platform_device_put(sdp3430_snd_device);
328
329 return ret;
330}
331module_init(sdp3430_soc_init);
332
333static void __exit sdp3430_soc_exit(void)
334{
335 snd_soc_jack_free_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
336 hs_jack_gpios);
337
338 platform_device_unregister(sdp3430_snd_device);
339}
340module_exit(sdp3430_soc_exit);
341
342MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
343MODULE_DESCRIPTION("ALSA SoC SDP3430");
344MODULE_LICENSE("GPL");
345