ASoC: Decouple DAPM from CODECs
[linux-2.6.git] / sound / soc / imx / wm1133-ev1.c
1 /*
2  *  wm1133-ev1.c - Audio for WM1133-EV1 on i.MX31ADS
3  *
4  *  Copyright (c) 2010 Wolfson Microelectronics plc
5  *  Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
6  *
7  *  Based on an earlier driver for the same hardware by Liam Girdwood.
8  *
9  *  This program is free software; you can redistribute  it and/or modify it
10  *  under  the terms of  the GNU General  Public License as published by the
11  *  Free Software Foundation;  either version 2 of the  License, or (at your
12  *  option) any later version.
13  */
14
15 #include <linux/platform_device.h>
16 #include <linux/clk.h>
17 #include <sound/core.h>
18 #include <sound/jack.h>
19 #include <sound/pcm.h>
20 #include <sound/pcm_params.h>
21 #include <sound/soc.h>
22 #include <sound/soc-dapm.h>
23
24 #include <mach/audmux.h>
25
26 #include "imx-ssi.h"
27 #include "../codecs/wm8350.h"
28
29 /* There is a silicon mic on the board optionally connected via a solder pad
30  * SP1.  Define this to enable it.
31  */
32 #undef USE_SIMIC
33
34 struct _wm8350_audio {
35         unsigned int channels;
36         snd_pcm_format_t format;
37         unsigned int rate;
38         unsigned int sysclk;
39         unsigned int bclkdiv;
40         unsigned int clkdiv;
41         unsigned int lr_rate;
42 };
43
44 /* in order of power consumption per rate (lowest first) */
45 static const struct _wm8350_audio wm8350_audio[] = {
46         /* 16bit mono modes */
47         {1, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000 >> 1,
48          WM8350_BCLK_DIV_48, WM8350_DACDIV_3, 16,},
49
50         /* 16 bit stereo modes */
51         {2, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000,
52          WM8350_BCLK_DIV_48, WM8350_DACDIV_6, 32,},
53         {2, SNDRV_PCM_FORMAT_S16_LE, 16000, 12288000,
54          WM8350_BCLK_DIV_24, WM8350_DACDIV_3, 32,},
55         {2, SNDRV_PCM_FORMAT_S16_LE, 32000, 12288000,
56          WM8350_BCLK_DIV_12, WM8350_DACDIV_1_5, 32,},
57         {2, SNDRV_PCM_FORMAT_S16_LE, 48000, 12288000,
58          WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
59         {2, SNDRV_PCM_FORMAT_S16_LE, 96000, 24576000,
60          WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
61         {2, SNDRV_PCM_FORMAT_S16_LE, 11025, 11289600,
62          WM8350_BCLK_DIV_32, WM8350_DACDIV_4, 32,},
63         {2, SNDRV_PCM_FORMAT_S16_LE, 22050, 11289600,
64          WM8350_BCLK_DIV_16, WM8350_DACDIV_2, 32,},
65         {2, SNDRV_PCM_FORMAT_S16_LE, 44100, 11289600,
66          WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
67         {2, SNDRV_PCM_FORMAT_S16_LE, 88200, 22579200,
68          WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
69
70         /* 24bit stereo modes */
71         {2, SNDRV_PCM_FORMAT_S24_LE, 48000, 12288000,
72          WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
73         {2, SNDRV_PCM_FORMAT_S24_LE, 96000, 24576000,
74          WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
75         {2, SNDRV_PCM_FORMAT_S24_LE, 44100, 11289600,
76          WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
77         {2, SNDRV_PCM_FORMAT_S24_LE, 88200, 22579200,
78          WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
79 };
80
81 static int wm1133_ev1_hw_params(struct snd_pcm_substream *substream,
82                                 struct snd_pcm_hw_params *params)
83 {
84         struct snd_soc_pcm_runtime *rtd = substream->private_data;
85         struct snd_soc_dai *codec_dai = rtd->codec_dai;
86         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
87         int i, found = 0;
88         snd_pcm_format_t format = params_format(params);
89         unsigned int rate = params_rate(params);
90         unsigned int channels = params_channels(params);
91         u32 dai_format;
92
93         /* find the correct audio parameters */
94         for (i = 0; i < ARRAY_SIZE(wm8350_audio); i++) {
95                 if (rate == wm8350_audio[i].rate &&
96                     format == wm8350_audio[i].format &&
97                     channels == wm8350_audio[i].channels) {
98                         found = 1;
99                         break;
100                 }
101         }
102         if (!found)
103                 return -EINVAL;
104
105         /* codec FLL input is 14.75 MHz from MCLK */
106         snd_soc_dai_set_pll(codec_dai, 0, 0, 14750000, wm8350_audio[i].sysclk);
107
108         dai_format = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
109                 SND_SOC_DAIFMT_CBM_CFM;
110
111         /* set codec DAI configuration */
112         snd_soc_dai_set_fmt(codec_dai, dai_format);
113
114         /* set cpu DAI configuration */
115         snd_soc_dai_set_fmt(cpu_dai, dai_format);
116
117         /* TODO: The SSI driver should figure this out for us */
118         switch (channels) {
119         case 2:
120                 snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffc, 0xffffffc, 2, 0);
121                 break;
122         case 1:
123                 snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffe, 0xffffffe, 1, 0);
124                 break;
125         default:
126                 return -EINVAL;
127         }
128
129         /* set MCLK as the codec system clock for DAC and ADC */
130         snd_soc_dai_set_sysclk(codec_dai, WM8350_MCLK_SEL_PLL_MCLK,
131                                wm8350_audio[i].sysclk, SND_SOC_CLOCK_IN);
132
133         /* set codec BCLK division for sample rate */
134         snd_soc_dai_set_clkdiv(codec_dai, WM8350_BCLK_CLKDIV,
135                                wm8350_audio[i].bclkdiv);
136
137         /* DAI is synchronous and clocked with DAC LRCLK & ADC LRC */
138         snd_soc_dai_set_clkdiv(codec_dai,
139                                WM8350_DACLR_CLKDIV, wm8350_audio[i].lr_rate);
140         snd_soc_dai_set_clkdiv(codec_dai,
141                                WM8350_ADCLR_CLKDIV, wm8350_audio[i].lr_rate);
142
143         /* now configure DAC and ADC clocks */
144         snd_soc_dai_set_clkdiv(codec_dai,
145                                WM8350_DAC_CLKDIV, wm8350_audio[i].clkdiv);
146
147         snd_soc_dai_set_clkdiv(codec_dai,
148                                WM8350_ADC_CLKDIV, wm8350_audio[i].clkdiv);
149
150         return 0;
151 }
152
153 static struct snd_soc_ops wm1133_ev1_ops = {
154         .hw_params = wm1133_ev1_hw_params,
155 };
156
157 static const struct snd_soc_dapm_widget wm1133_ev1_widgets[] = {
158 #ifdef USE_SIMIC
159         SND_SOC_DAPM_MIC("SiMIC", NULL),
160 #endif
161         SND_SOC_DAPM_MIC("Mic1 Jack", NULL),
162         SND_SOC_DAPM_MIC("Mic2 Jack", NULL),
163         SND_SOC_DAPM_LINE("Line In Jack", NULL),
164         SND_SOC_DAPM_LINE("Line Out Jack", NULL),
165         SND_SOC_DAPM_HP("Headphone Jack", NULL),
166 };
167
168 /* imx32ads soc_card audio map */
169 static const struct snd_soc_dapm_route wm1133_ev1_map[] = {
170
171 #ifdef USE_SIMIC
172         /* SiMIC --> IN1LN (with automatic bias) via SP1 */
173         { "IN1LN", NULL, "Mic Bias" },
174         { "Mic Bias", NULL, "SiMIC" },
175 #endif
176
177         /* Mic 1 Jack --> IN1LN and IN1LP (with automatic bias) */
178         { "IN1LN", NULL, "Mic Bias" },
179         { "IN1LP", NULL, "Mic1 Jack" },
180         { "Mic Bias", NULL, "Mic1 Jack" },
181
182         /* Mic 2 Jack --> IN1RN and IN1RP (with automatic bias) */
183         { "IN1RN", NULL, "Mic Bias" },
184         { "IN1RP", NULL, "Mic2 Jack" },
185         { "Mic Bias", NULL, "Mic2 Jack" },
186
187         /* Line in Jack --> AUX (L+R) */
188         { "IN3R", NULL, "Line In Jack" },
189         { "IN3L", NULL, "Line In Jack" },
190
191         /* Out1 --> Headphone Jack */
192         { "Headphone Jack", NULL, "OUT1R" },
193         { "Headphone Jack", NULL, "OUT1L" },
194
195         /* Out1 --> Line Out Jack */
196         { "Line Out Jack", NULL, "OUT2R" },
197         { "Line Out Jack", NULL, "OUT2L" },
198 };
199
200 static struct snd_soc_jack hp_jack;
201
202 static struct snd_soc_jack_pin hp_jack_pins[] = {
203         { .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE },
204 };
205
206 static struct snd_soc_jack mic_jack;
207
208 static struct snd_soc_jack_pin mic_jack_pins[] = {
209         { .pin = "Mic1 Jack", .mask = SND_JACK_MICROPHONE },
210         { .pin = "Mic2 Jack", .mask = SND_JACK_MICROPHONE },
211 };
212
213 static int wm1133_ev1_init(struct snd_soc_pcm_runtime *rtd)
214 {
215         struct snd_soc_codec *codec = rtd->codec;
216         struct snd_soc_dapm_context *dapm = &codec->dapm;
217
218         snd_soc_dapm_new_controls(dapm, wm1133_ev1_widgets,
219                                   ARRAY_SIZE(wm1133_ev1_widgets));
220
221         snd_soc_dapm_add_routes(dapm, wm1133_ev1_map,
222                                 ARRAY_SIZE(wm1133_ev1_map));
223
224         /* Headphone jack detection */
225         snd_soc_jack_new(codec, "Headphone", SND_JACK_HEADPHONE, &hp_jack);
226         snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
227                               hp_jack_pins);
228         wm8350_hp_jack_detect(codec, WM8350_JDR, &hp_jack, SND_JACK_HEADPHONE);
229
230         /* Microphone jack detection */
231         snd_soc_jack_new(codec, "Microphone",
232                          SND_JACK_MICROPHONE | SND_JACK_BTN_0, &mic_jack);
233         snd_soc_jack_add_pins(&mic_jack, ARRAY_SIZE(mic_jack_pins),
234                               mic_jack_pins);
235         wm8350_mic_jack_detect(codec, &mic_jack, SND_JACK_MICROPHONE,
236                                SND_JACK_BTN_0);
237
238         snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
239
240         return 0;
241 }
242
243
244 static struct snd_soc_dai_link wm1133_ev1_dai = {
245         .name = "WM1133-EV1",
246         .stream_name = "Audio",
247         .cpu_dai_name = "imx-ssi.0",
248         .codec_dai_name = "wm8350-hifi",
249         .platform_name = "imx-fiq-pcm-audio.0",
250         .codec_name = "wm8350-codec.0-0x1a",
251         .init = wm1133_ev1_init,
252         .ops = &wm1133_ev1_ops,
253         .symmetric_rates = 1,
254 };
255
256 static struct snd_soc_card wm1133_ev1 = {
257         .name = "WM1133-EV1",
258         .dai_link = &wm1133_ev1_dai,
259         .num_links = 1,
260 };
261
262 static struct platform_device *wm1133_ev1_snd_device;
263
264 static int __init wm1133_ev1_audio_init(void)
265 {
266         int ret;
267         unsigned int ptcr, pdcr;
268
269         /* SSI0 mastered by port 5 */
270         ptcr = MXC_AUDMUX_V2_PTCR_SYN |
271                 MXC_AUDMUX_V2_PTCR_TFSDIR |
272                 MXC_AUDMUX_V2_PTCR_TFSEL(MX31_AUDMUX_PORT5_SSI_PINS_5) |
273                 MXC_AUDMUX_V2_PTCR_TCLKDIR |
274                 MXC_AUDMUX_V2_PTCR_TCSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
275         pdcr = MXC_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
276         mxc_audmux_v2_configure_port(MX31_AUDMUX_PORT1_SSI0, ptcr, pdcr);
277
278         ptcr = MXC_AUDMUX_V2_PTCR_SYN;
279         pdcr = MXC_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT1_SSI0);
280         mxc_audmux_v2_configure_port(MX31_AUDMUX_PORT5_SSI_PINS_5, ptcr, pdcr);
281
282         wm1133_ev1_snd_device = platform_device_alloc("soc-audio", -1);
283         if (!wm1133_ev1_snd_device)
284                 return -ENOMEM;
285
286         platform_set_drvdata(wm1133_ev1_snd_device, &wm1133_ev1);
287         ret = platform_device_add(wm1133_ev1_snd_device);
288
289         if (ret)
290                 platform_device_put(wm1133_ev1_snd_device);
291
292         return ret;
293 }
294 module_init(wm1133_ev1_audio_init);
295
296 static void __exit wm1133_ev1_audio_exit(void)
297 {
298         platform_device_unregister(wm1133_ev1_snd_device);
299 }
300 module_exit(wm1133_ev1_audio_exit);
301
302 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
303 MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS");
304 MODULE_LICENSE("GPL");