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Linux/sound/soc/fsl/wm1133-ev1.c

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  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 <linux/module.h>
 18 #include <sound/core.h>
 19 #include <sound/jack.h>
 20 #include <sound/pcm.h>
 21 #include <sound/pcm_params.h>
 22 #include <sound/soc.h>
 23 
 24 #include "imx-ssi.h"
 25 #include "../codecs/wm8350.h"
 26 #include "imx-audmux.h"
 27 
 28 /* There is a silicon mic on the board optionally connected via a solder pad
 29  * SP1.  Define this to enable it.
 30  */
 31 #undef USE_SIMIC
 32 
 33 struct _wm8350_audio {
 34         unsigned int channels;
 35         snd_pcm_format_t format;
 36         unsigned int rate;
 37         unsigned int sysclk;
 38         unsigned int bclkdiv;
 39         unsigned int clkdiv;
 40         unsigned int lr_rate;
 41 };
 42 
 43 /* in order of power consumption per rate (lowest first) */
 44 static const struct _wm8350_audio wm8350_audio[] = {
 45         /* 16bit mono modes */
 46         {1, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000 >> 1,
 47          WM8350_BCLK_DIV_48, WM8350_DACDIV_3, 16,},
 48 
 49         /* 16 bit stereo modes */
 50         {2, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000,
 51          WM8350_BCLK_DIV_48, WM8350_DACDIV_6, 32,},
 52         {2, SNDRV_PCM_FORMAT_S16_LE, 16000, 12288000,
 53          WM8350_BCLK_DIV_24, WM8350_DACDIV_3, 32,},
 54         {2, SNDRV_PCM_FORMAT_S16_LE, 32000, 12288000,
 55          WM8350_BCLK_DIV_12, WM8350_DACDIV_1_5, 32,},
 56         {2, SNDRV_PCM_FORMAT_S16_LE, 48000, 12288000,
 57          WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
 58         {2, SNDRV_PCM_FORMAT_S16_LE, 96000, 24576000,
 59          WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
 60         {2, SNDRV_PCM_FORMAT_S16_LE, 11025, 11289600,
 61          WM8350_BCLK_DIV_32, WM8350_DACDIV_4, 32,},
 62         {2, SNDRV_PCM_FORMAT_S16_LE, 22050, 11289600,
 63          WM8350_BCLK_DIV_16, WM8350_DACDIV_2, 32,},
 64         {2, SNDRV_PCM_FORMAT_S16_LE, 44100, 11289600,
 65          WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
 66         {2, SNDRV_PCM_FORMAT_S16_LE, 88200, 22579200,
 67          WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
 68 
 69         /* 24bit stereo modes */
 70         {2, SNDRV_PCM_FORMAT_S24_LE, 48000, 12288000,
 71          WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
 72         {2, SNDRV_PCM_FORMAT_S24_LE, 96000, 24576000,
 73          WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
 74         {2, SNDRV_PCM_FORMAT_S24_LE, 44100, 11289600,
 75          WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
 76         {2, SNDRV_PCM_FORMAT_S24_LE, 88200, 22579200,
 77          WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
 78 };
 79 
 80 static int wm1133_ev1_hw_params(struct snd_pcm_substream *substream,
 81                                 struct snd_pcm_hw_params *params)
 82 {
 83         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 84         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 85         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 86         int i, found = 0;
 87         snd_pcm_format_t format = params_format(params);
 88         unsigned int rate = params_rate(params);
 89         unsigned int channels = params_channels(params);
 90 
 91         /* find the correct audio parameters */
 92         for (i = 0; i < ARRAY_SIZE(wm8350_audio); i++) {
 93                 if (rate == wm8350_audio[i].rate &&
 94                     format == wm8350_audio[i].format &&
 95                     channels == wm8350_audio[i].channels) {
 96                         found = 1;
 97                         break;
 98                 }
 99         }
100         if (!found)
101                 return -EINVAL;
102 
103         /* codec FLL input is 14.75 MHz from MCLK */
104         snd_soc_dai_set_pll(codec_dai, 0, 0, 14750000, wm8350_audio[i].sysclk);
105 
106         /* TODO: The SSI driver should figure this out for us */
107         switch (channels) {
108         case 2:
109                 snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0);
110                 break;
111         case 1:
112                 snd_soc_dai_set_tdm_slot(cpu_dai, 0x1, 0x1, 1, 0);
113                 break;
114         default:
115                 return -EINVAL;
116         }
117 
118         /* set MCLK as the codec system clock for DAC and ADC */
119         snd_soc_dai_set_sysclk(codec_dai, WM8350_MCLK_SEL_PLL_MCLK,
120                                wm8350_audio[i].sysclk, SND_SOC_CLOCK_IN);
121 
122         /* set codec BCLK division for sample rate */
123         snd_soc_dai_set_clkdiv(codec_dai, WM8350_BCLK_CLKDIV,
124                                wm8350_audio[i].bclkdiv);
125 
126         /* DAI is synchronous and clocked with DAC LRCLK & ADC LRC */
127         snd_soc_dai_set_clkdiv(codec_dai,
128                                WM8350_DACLR_CLKDIV, wm8350_audio[i].lr_rate);
129         snd_soc_dai_set_clkdiv(codec_dai,
130                                WM8350_ADCLR_CLKDIV, wm8350_audio[i].lr_rate);
131 
132         /* now configure DAC and ADC clocks */
133         snd_soc_dai_set_clkdiv(codec_dai,
134                                WM8350_DAC_CLKDIV, wm8350_audio[i].clkdiv);
135 
136         snd_soc_dai_set_clkdiv(codec_dai,
137                                WM8350_ADC_CLKDIV, wm8350_audio[i].clkdiv);
138 
139         return 0;
140 }
141 
142 static const struct snd_soc_ops wm1133_ev1_ops = {
143         .hw_params = wm1133_ev1_hw_params,
144 };
145 
146 static const struct snd_soc_dapm_widget wm1133_ev1_widgets[] = {
147 #ifdef USE_SIMIC
148         SND_SOC_DAPM_MIC("SiMIC", NULL),
149 #endif
150         SND_SOC_DAPM_MIC("Mic1 Jack", NULL),
151         SND_SOC_DAPM_MIC("Mic2 Jack", NULL),
152         SND_SOC_DAPM_LINE("Line In Jack", NULL),
153         SND_SOC_DAPM_LINE("Line Out Jack", NULL),
154         SND_SOC_DAPM_HP("Headphone Jack", NULL),
155 };
156 
157 /* imx32ads soc_card audio map */
158 static const struct snd_soc_dapm_route wm1133_ev1_map[] = {
159 
160 #ifdef USE_SIMIC
161         /* SiMIC --> IN1LN (with automatic bias) via SP1 */
162         { "IN1LN", NULL, "Mic Bias" },
163         { "Mic Bias", NULL, "SiMIC" },
164 #endif
165 
166         /* Mic 1 Jack --> IN1LN and IN1LP (with automatic bias) */
167         { "IN1LN", NULL, "Mic Bias" },
168         { "IN1LP", NULL, "Mic1 Jack" },
169         { "Mic Bias", NULL, "Mic1 Jack" },
170 
171         /* Mic 2 Jack --> IN1RN and IN1RP (with automatic bias) */
172         { "IN1RN", NULL, "Mic Bias" },
173         { "IN1RP", NULL, "Mic2 Jack" },
174         { "Mic Bias", NULL, "Mic2 Jack" },
175 
176         /* Line in Jack --> AUX (L+R) */
177         { "IN3R", NULL, "Line In Jack" },
178         { "IN3L", NULL, "Line In Jack" },
179 
180         /* Out1 --> Headphone Jack */
181         { "Headphone Jack", NULL, "OUT1R" },
182         { "Headphone Jack", NULL, "OUT1L" },
183 
184         /* Out1 --> Line Out Jack */
185         { "Line Out Jack", NULL, "OUT2R" },
186         { "Line Out Jack", NULL, "OUT2L" },
187 };
188 
189 static struct snd_soc_jack hp_jack;
190 
191 static struct snd_soc_jack_pin hp_jack_pins[] = {
192         { .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE },
193 };
194 
195 static struct snd_soc_jack mic_jack;
196 
197 static struct snd_soc_jack_pin mic_jack_pins[] = {
198         { .pin = "Mic1 Jack", .mask = SND_JACK_MICROPHONE },
199         { .pin = "Mic2 Jack", .mask = SND_JACK_MICROPHONE },
200 };
201 
202 static int wm1133_ev1_init(struct snd_soc_pcm_runtime *rtd)
203 {
204         struct snd_soc_component *component = rtd->codec_dai->component;
205 
206         /* Headphone jack detection */
207         snd_soc_card_jack_new(rtd->card, "Headphone", SND_JACK_HEADPHONE,
208                               &hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins));
209         wm8350_hp_jack_detect(component, WM8350_JDR, &hp_jack, SND_JACK_HEADPHONE);
210 
211         /* Microphone jack detection */
212         snd_soc_card_jack_new(rtd->card, "Microphone",
213                               SND_JACK_MICROPHONE | SND_JACK_BTN_0, &mic_jack,
214                               mic_jack_pins, ARRAY_SIZE(mic_jack_pins));
215         wm8350_mic_jack_detect(component, &mic_jack, SND_JACK_MICROPHONE,
216                                SND_JACK_BTN_0);
217 
218         snd_soc_dapm_force_enable_pin(&rtd->card->dapm, "Mic Bias");
219 
220         return 0;
221 }
222 
223 
224 static struct snd_soc_dai_link wm1133_ev1_dai = {
225         .name = "WM1133-EV1",
226         .stream_name = "Audio",
227         .cpu_dai_name = "imx-ssi.0",
228         .codec_dai_name = "wm8350-hifi",
229         .platform_name = "imx-ssi.0",
230         .codec_name = "wm8350-codec.0-0x1a",
231         .init = wm1133_ev1_init,
232         .ops = &wm1133_ev1_ops,
233         .symmetric_rates = 1,
234         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
235                    SND_SOC_DAIFMT_CBM_CFM,
236 };
237 
238 static struct snd_soc_card wm1133_ev1 = {
239         .name = "WM1133-EV1",
240         .owner = THIS_MODULE,
241         .dai_link = &wm1133_ev1_dai,
242         .num_links = 1,
243 
244         .dapm_widgets = wm1133_ev1_widgets,
245         .num_dapm_widgets = ARRAY_SIZE(wm1133_ev1_widgets),
246         .dapm_routes = wm1133_ev1_map,
247         .num_dapm_routes = ARRAY_SIZE(wm1133_ev1_map),
248 };
249 
250 static struct platform_device *wm1133_ev1_snd_device;
251 
252 static int __init wm1133_ev1_audio_init(void)
253 {
254         int ret;
255         unsigned int ptcr, pdcr;
256 
257         /* SSI0 mastered by port 5 */
258         ptcr = IMX_AUDMUX_V2_PTCR_SYN |
259                 IMX_AUDMUX_V2_PTCR_TFSDIR |
260                 IMX_AUDMUX_V2_PTCR_TFSEL(MX31_AUDMUX_PORT5_SSI_PINS_5) |
261                 IMX_AUDMUX_V2_PTCR_TCLKDIR |
262                 IMX_AUDMUX_V2_PTCR_TCSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
263         pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
264         imx_audmux_v2_configure_port(MX31_AUDMUX_PORT1_SSI0, ptcr, pdcr);
265 
266         ptcr = IMX_AUDMUX_V2_PTCR_SYN;
267         pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT1_SSI0);
268         imx_audmux_v2_configure_port(MX31_AUDMUX_PORT5_SSI_PINS_5, ptcr, pdcr);
269 
270         wm1133_ev1_snd_device = platform_device_alloc("soc-audio", -1);
271         if (!wm1133_ev1_snd_device)
272                 return -ENOMEM;
273 
274         platform_set_drvdata(wm1133_ev1_snd_device, &wm1133_ev1);
275         ret = platform_device_add(wm1133_ev1_snd_device);
276 
277         if (ret)
278                 platform_device_put(wm1133_ev1_snd_device);
279 
280         return ret;
281 }
282 module_init(wm1133_ev1_audio_init);
283 
284 static void __exit wm1133_ev1_audio_exit(void)
285 {
286         platform_device_unregister(wm1133_ev1_snd_device);
287 }
288 module_exit(wm1133_ev1_audio_exit);
289 
290 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
291 MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS");
292 MODULE_LICENSE("GPL");
293 

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