ASoC: Decouple DAPM from CODECs
[linux-2.6.git] / sound / soc / omap / omap3pandora.c
1 /*
2  * omap3pandora.c  --  SoC audio for Pandora Handheld Console
3  *
4  * Author: GraÅžvydas Ignotas <notasas@gmail.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 <linux/gpio.h>
25 #include <linux/delay.h>
26 #include <linux/regulator/consumer.h>
27
28 #include <sound/core.h>
29 #include <sound/pcm.h>
30 #include <sound/soc.h>
31 #include <sound/soc-dapm.h>
32
33 #include <asm/mach-types.h>
34 #include <plat/mcbsp.h>
35
36 #include "omap-mcbsp.h"
37 #include "omap-pcm.h"
38
39 #define OMAP3_PANDORA_DAC_POWER_GPIO    118
40 #define OMAP3_PANDORA_AMP_POWER_GPIO    14
41
42 #define PREFIX "ASoC omap3pandora: "
43
44 static struct regulator *omap3pandora_dac_reg;
45
46 static int omap3pandora_hw_params(struct snd_pcm_substream *substream,
47         struct snd_pcm_hw_params *params)
48 {
49         struct snd_soc_pcm_runtime *rtd = substream->private_data;
50         struct snd_soc_dai *codec_dai = rtd->codec_dai;
51         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
52         int fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
53                   SND_SOC_DAIFMT_CBS_CFS;
54         int ret;
55
56         /* Set codec DAI configuration */
57         ret = snd_soc_dai_set_fmt(codec_dai, fmt);
58         if (ret < 0) {
59                 pr_err(PREFIX "can't set codec DAI configuration\n");
60                 return ret;
61         }
62
63         /* Set cpu DAI configuration */
64         ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
65         if (ret < 0) {
66                 pr_err(PREFIX "can't set cpu DAI configuration\n");
67                 return ret;
68         }
69
70         /* Set the codec system clock for DAC and ADC */
71         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
72                                             SND_SOC_CLOCK_IN);
73         if (ret < 0) {
74                 pr_err(PREFIX "can't set codec system clock\n");
75                 return ret;
76         }
77
78         /* Set McBSP clock to external */
79         ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKS_EXT,
80                                      256 * params_rate(params),
81                                      SND_SOC_CLOCK_IN);
82         if (ret < 0) {
83                 pr_err(PREFIX "can't set cpu system clock\n");
84                 return ret;
85         }
86
87         ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, 8);
88         if (ret < 0) {
89                 pr_err(PREFIX "can't set SRG clock divider\n");
90                 return ret;
91         }
92
93         return 0;
94 }
95
96 static int omap3pandora_dac_event(struct snd_soc_dapm_widget *w,
97         struct snd_kcontrol *k, int event)
98 {
99         /*
100          * The PCM1773 DAC datasheet requires 1ms delay between switching
101          * VCC power on/off and /PD pin high/low
102          */
103         if (SND_SOC_DAPM_EVENT_ON(event)) {
104                 regulator_enable(omap3pandora_dac_reg);
105                 mdelay(1);
106                 gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1);
107         } else {
108                 gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
109                 mdelay(1);
110                 regulator_disable(omap3pandora_dac_reg);
111         }
112
113         return 0;
114 }
115
116 static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w,
117         struct snd_kcontrol *k, int event)
118 {
119         if (SND_SOC_DAPM_EVENT_ON(event))
120                 gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1);
121         else
122                 gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
123
124         return 0;
125 }
126
127 /*
128  * Audio paths on Pandora board:
129  *
130  *  |O| ---> PCM DAC +-> AMP -> Headphone Jack
131  *  |M|         A    +--------> Line Out
132  *  |A| <~~clk~~+
133  *  |P| <--- TWL4030 <--------- Line In and MICs
134  */
135 static const struct snd_soc_dapm_widget omap3pandora_out_dapm_widgets[] = {
136         SND_SOC_DAPM_DAC_E("PCM DAC", "HiFi Playback", SND_SOC_NOPM,
137                            0, 0, omap3pandora_dac_event,
138                            SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
139         SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM,
140                            0, 0, NULL, 0, omap3pandora_hp_event,
141                            SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
142         SND_SOC_DAPM_HP("Headphone Jack", NULL),
143         SND_SOC_DAPM_LINE("Line Out", NULL),
144 };
145
146 static const struct snd_soc_dapm_widget omap3pandora_in_dapm_widgets[] = {
147         SND_SOC_DAPM_MIC("Mic (internal)", NULL),
148         SND_SOC_DAPM_MIC("Mic (external)", NULL),
149         SND_SOC_DAPM_LINE("Line In", NULL),
150 };
151
152 static const struct snd_soc_dapm_route omap3pandora_out_map[] = {
153         {"PCM DAC", NULL, "APLL Enable"},
154         {"Headphone Amplifier", NULL, "PCM DAC"},
155         {"Line Out", NULL, "PCM DAC"},
156         {"Headphone Jack", NULL, "Headphone Amplifier"},
157 };
158
159 static const struct snd_soc_dapm_route omap3pandora_in_map[] = {
160         {"AUXL", NULL, "Line In"},
161         {"AUXR", NULL, "Line In"},
162
163         {"MAINMIC", NULL, "Mic Bias 1"},
164         {"Mic Bias 1", NULL, "Mic (internal)"},
165
166         {"SUBMIC", NULL, "Mic Bias 2"},
167         {"Mic Bias 2", NULL, "Mic (external)"},
168 };
169
170 static int omap3pandora_out_init(struct snd_soc_pcm_runtime *rtd)
171 {
172         struct snd_soc_codec *codec = rtd->codec;
173         struct snd_soc_dapm_context *dapm = &codec->dapm;
174         int ret;
175
176         /* All TWL4030 output pins are floating */
177         snd_soc_dapm_nc_pin(dapm, "EARPIECE");
178         snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
179         snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
180         snd_soc_dapm_nc_pin(dapm, "HSOL");
181         snd_soc_dapm_nc_pin(dapm, "HSOR");
182         snd_soc_dapm_nc_pin(dapm, "CARKITL");
183         snd_soc_dapm_nc_pin(dapm, "CARKITR");
184         snd_soc_dapm_nc_pin(dapm, "HFL");
185         snd_soc_dapm_nc_pin(dapm, "HFR");
186         snd_soc_dapm_nc_pin(dapm, "VIBRA");
187
188         ret = snd_soc_dapm_new_controls(dapm, omap3pandora_out_dapm_widgets,
189                                 ARRAY_SIZE(omap3pandora_out_dapm_widgets));
190         if (ret < 0)
191                 return ret;
192
193         snd_soc_dapm_add_routes(dapm, omap3pandora_out_map,
194                 ARRAY_SIZE(omap3pandora_out_map));
195
196         return snd_soc_dapm_sync(dapm);
197 }
198
199 static int omap3pandora_in_init(struct snd_soc_pcm_runtime *rtd)
200 {
201         struct snd_soc_codec *codec = rtd->codec;
202         struct snd_soc_dapm_context *dapm = &codec->dapm;
203         int ret;
204
205         /* Not comnnected */
206         snd_soc_dapm_nc_pin(dapm, "HSMIC");
207         snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
208         snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
209         snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");
210
211         ret = snd_soc_dapm_new_controls(dapm, omap3pandora_in_dapm_widgets,
212                                 ARRAY_SIZE(omap3pandora_in_dapm_widgets));
213         if (ret < 0)
214                 return ret;
215
216         snd_soc_dapm_add_routes(dapm, omap3pandora_in_map,
217                 ARRAY_SIZE(omap3pandora_in_map));
218
219         return snd_soc_dapm_sync(dapm);
220 }
221
222 static struct snd_soc_ops omap3pandora_ops = {
223         .hw_params = omap3pandora_hw_params,
224 };
225
226 /* Digital audio interface glue - connects codec <--> CPU */
227 static struct snd_soc_dai_link omap3pandora_dai[] = {
228         {
229                 .name = "PCM1773",
230                 .stream_name = "HiFi Out",
231                 .cpu_dai_name = "omap-mcbsp-dai.1",
232                 .codec_dai_name = "twl4030-hifi",
233                 .platform_name = "omap-pcm-audio",
234                 .codec_name = "twl4030-codec",
235                 .ops = &omap3pandora_ops,
236                 .init = omap3pandora_out_init,
237         }, {
238                 .name = "TWL4030",
239                 .stream_name = "Line/Mic In",
240                 .cpu_dai_name = "omap-mcbsp-dai.3",
241                 .codec_dai_name = "twl4030-hifi",
242                 .platform_name = "omap-pcm-audio",
243                 .codec_name = "twl4030-codec",
244                 .ops = &omap3pandora_ops,
245                 .init = omap3pandora_in_init,
246         }
247 };
248
249 /* SoC card */
250 static struct snd_soc_card snd_soc_card_omap3pandora = {
251         .name = "omap3pandora",
252         .dai_link = omap3pandora_dai,
253         .num_links = ARRAY_SIZE(omap3pandora_dai),
254 };
255
256 static struct platform_device *omap3pandora_snd_device;
257
258 static int __init omap3pandora_soc_init(void)
259 {
260         int ret;
261
262         if (!machine_is_omap3_pandora())
263                 return -ENODEV;
264
265         pr_info("OMAP3 Pandora SoC init\n");
266
267         ret = gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO, "dac_power");
268         if (ret) {
269                 pr_err(PREFIX "Failed to get DAC power GPIO\n");
270                 return ret;
271         }
272
273         ret = gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
274         if (ret) {
275                 pr_err(PREFIX "Failed to set DAC power GPIO direction\n");
276                 goto fail0;
277         }
278
279         ret = gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO, "amp_power");
280         if (ret) {
281                 pr_err(PREFIX "Failed to get amp power GPIO\n");
282                 goto fail0;
283         }
284
285         ret = gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
286         if (ret) {
287                 pr_err(PREFIX "Failed to set amp power GPIO direction\n");
288                 goto fail1;
289         }
290
291         omap3pandora_snd_device = platform_device_alloc("soc-audio", -1);
292         if (omap3pandora_snd_device == NULL) {
293                 pr_err(PREFIX "Platform device allocation failed\n");
294                 ret = -ENOMEM;
295                 goto fail1;
296         }
297
298         platform_set_drvdata(omap3pandora_snd_device, &snd_soc_card_omap3pandora);
299
300         ret = platform_device_add(omap3pandora_snd_device);
301         if (ret) {
302                 pr_err(PREFIX "Unable to add platform device\n");
303                 goto fail2;
304         }
305
306         omap3pandora_dac_reg = regulator_get(&omap3pandora_snd_device->dev, "vcc");
307         if (IS_ERR(omap3pandora_dac_reg)) {
308                 pr_err(PREFIX "Failed to get DAC regulator from %s: %ld\n",
309                         dev_name(&omap3pandora_snd_device->dev),
310                         PTR_ERR(omap3pandora_dac_reg));
311                 goto fail3;
312         }
313
314         return 0;
315
316 fail3:
317         platform_device_del(omap3pandora_snd_device);
318 fail2:
319         platform_device_put(omap3pandora_snd_device);
320 fail1:
321         gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
322 fail0:
323         gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
324         return ret;
325 }
326 module_init(omap3pandora_soc_init);
327
328 static void __exit omap3pandora_soc_exit(void)
329 {
330         regulator_put(omap3pandora_dac_reg);
331         platform_device_unregister(omap3pandora_snd_device);
332         gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
333         gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
334 }
335 module_exit(omap3pandora_soc_exit);
336
337 MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>");
338 MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora");
339 MODULE_LICENSE("GPL");