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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 <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
34struct _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) */
45static 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
81static 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;
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85 struct snd_soc_dai *codec_dai = rtd->codec_dai;
86 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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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
153static struct snd_soc_ops wm1133_ev1_ops = {
154 .hw_params = wm1133_ev1_hw_params,
155};
156
157static 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 */
169static 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" },
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184 { "IN1RP", NULL, "Mic2 Jack" },
185 { "Mic Bias", NULL, "Mic2 Jack" },
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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
200static struct snd_soc_jack hp_jack;
201
202static struct snd_soc_jack_pin hp_jack_pins[] = {
203 { .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE },
204};
205
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206static struct snd_soc_jack mic_jack;
207
208static 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
f0fba2ad 213static int wm1133_ev1_init(struct snd_soc_pcm_runtime *rtd)
eeec1246 214{
f0fba2ad 215 struct snd_soc_codec *codec = rtd->codec;
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216
217 snd_soc_dapm_new_controls(codec, wm1133_ev1_widgets,
218 ARRAY_SIZE(wm1133_ev1_widgets));
219
220 snd_soc_dapm_add_routes(codec, wm1133_ev1_map,
221 ARRAY_SIZE(wm1133_ev1_map));
222
223 /* Headphone jack detection */
f0fba2ad 224 snd_soc_jack_new(codec, "Headphone", SND_JACK_HEADPHONE, &hp_jack);
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225 snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
226 hp_jack_pins);
227 wm8350_hp_jack_detect(codec, WM8350_JDR, &hp_jack, SND_JACK_HEADPHONE);
228
093208f5 229 /* Microphone jack detection */
f0fba2ad 230 snd_soc_jack_new(codec, "Microphone",
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231 SND_JACK_MICROPHONE | SND_JACK_BTN_0, &mic_jack);
232 snd_soc_jack_add_pins(&mic_jack, ARRAY_SIZE(mic_jack_pins),
233 mic_jack_pins);
234 wm8350_mic_jack_detect(codec, &mic_jack, SND_JACK_MICROPHONE,
235 SND_JACK_BTN_0);
236
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237 snd_soc_dapm_force_enable_pin(codec, "Mic Bias");
238
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239 return 0;
240}
241
242
243static struct snd_soc_dai_link wm1133_ev1_dai = {
244 .name = "WM1133-EV1",
245 .stream_name = "Audio",
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246 .cpu_dai_name = "imx-ssi-dai.0",
247 .codec_dai_name = "wm8350-hifi",
248 .platform_name = "imx-fiq-pcm-audio.0",
249 .codec_name = "wm8350-codec.0-0x1a",
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250 .init = wm1133_ev1_init,
251 .ops = &wm1133_ev1_ops,
252 .symmetric_rates = 1,
253};
254
255static struct snd_soc_card wm1133_ev1 = {
256 .name = "WM1133-EV1",
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257 .dai_link = &wm1133_ev1_dai,
258 .num_links = 1,
259};
260
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261static struct platform_device *wm1133_ev1_snd_device;
262
263static int __init wm1133_ev1_audio_init(void)
264{
265 int ret;
266 unsigned int ptcr, pdcr;
267
268 /* SSI0 mastered by port 5 */
269 ptcr = MXC_AUDMUX_V2_PTCR_SYN |
270 MXC_AUDMUX_V2_PTCR_TFSDIR |
271 MXC_AUDMUX_V2_PTCR_TFSEL(MX31_AUDMUX_PORT5_SSI_PINS_5) |
272 MXC_AUDMUX_V2_PTCR_TCLKDIR |
273 MXC_AUDMUX_V2_PTCR_TCSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
274 pdcr = MXC_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
275 mxc_audmux_v2_configure_port(MX31_AUDMUX_PORT1_SSI0, ptcr, pdcr);
276
277 ptcr = MXC_AUDMUX_V2_PTCR_SYN;
278 pdcr = MXC_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT1_SSI0);
279 mxc_audmux_v2_configure_port(MX31_AUDMUX_PORT5_SSI_PINS_5, ptcr, pdcr);
280
281 wm1133_ev1_snd_device = platform_device_alloc("soc-audio", -1);
282 if (!wm1133_ev1_snd_device)
283 return -ENOMEM;
284
f0fba2ad 285 platform_set_drvdata(wm1133_ev1_snd_device, &wm1133_ev1);
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286 ret = platform_device_add(wm1133_ev1_snd_device);
287
288 if (ret)
289 platform_device_put(wm1133_ev1_snd_device);
290
291 return ret;
292}
293module_init(wm1133_ev1_audio_init);
294
295static void __exit wm1133_ev1_audio_exit(void)
296{
297 platform_device_unregister(wm1133_ev1_snd_device);
298}
299module_exit(wm1133_ev1_audio_exit);
300
301MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
302MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS");
303MODULE_LICENSE("GPL");