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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 | ||
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 | ||
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 */ | |
224 | snd_soc_jack_new(codec, "Headphone", SND_JACK_HEADPHONE, &hp_jack); | |
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 | ||
229 | /* Microphone jack detection */ | |
230 | snd_soc_jack_new(codec, "Microphone", | |
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 | ||
237 | snd_soc_dapm_force_enable_pin(codec, "Mic Bias"); | |
238 | ||
239 | return 0; | |
240 | } | |
241 | ||
242 | ||
243 | static struct snd_soc_dai_link wm1133_ev1_dai = { | |
244 | .name = "WM1133-EV1", | |
245 | .stream_name = "Audio", | |
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", | |
250 | .init = wm1133_ev1_init, | |
251 | .ops = &wm1133_ev1_ops, | |
252 | .symmetric_rates = 1, | |
253 | }; | |
254 | ||
255 | static struct snd_soc_card wm1133_ev1 = { | |
256 | .name = "WM1133-EV1", | |
257 | .dai_link = &wm1133_ev1_dai, | |
258 | .num_links = 1, | |
259 | }; | |
260 | ||
261 | static struct platform_device *wm1133_ev1_snd_device; | |
262 | ||
263 | static 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 | ||
285 | platform_set_drvdata(wm1133_ev1_snd_device, &wm1133_ev1); | |
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 | } | |
293 | module_init(wm1133_ev1_audio_init); | |
294 | ||
295 | static void __exit wm1133_ev1_audio_exit(void) | |
296 | { | |
297 | platform_device_unregister(wm1133_ev1_snd_device); | |
298 | } | |
299 | module_exit(wm1133_ev1_audio_exit); | |
300 | ||
301 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
302 | MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS"); | |
303 | MODULE_LICENSE("GPL"); |