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

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  1 // SPDX-License-Identifier: GPL-2.0+
  2 //
  3 //  wm1133-ev1.c - Audio for WM1133-EV1 on i.MX31ADS
  4 //
  5 //  Copyright (c) 2010 Wolfson Microelectronics plc
  6 //  Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
  7 //
  8 //  Based on an earlier driver for the same hardware by Liam Girdwood.
  9 
 10 #include <linux/platform_device.h>
 11 #include <linux/clk.h>
 12 #include <linux/module.h>
 13 #include <sound/core.h>
 14 #include <sound/jack.h>
 15 #include <sound/pcm.h>
 16 #include <sound/pcm_params.h>
 17 #include <sound/soc.h>
 18 
 19 #include "imx-ssi.h"
 20 #include "../codecs/wm8350.h"
 21 #include "imx-audmux.h"
 22 
 23 /* There is a silicon mic on the board optionally connected via a solder pad
 24  * SP1.  Define this to enable it.
 25  */
 26 #undef USE_SIMIC
 27 
 28 struct _wm8350_audio {
 29         unsigned int channels;
 30         snd_pcm_format_t format;
 31         unsigned int rate;
 32         unsigned int sysclk;
 33         unsigned int bclkdiv;
 34         unsigned int clkdiv;
 35         unsigned int lr_rate;
 36 };
 37 
 38 /* in order of power consumption per rate (lowest first) */
 39 static const struct _wm8350_audio wm8350_audio[] = {
 40         /* 16bit mono modes */
 41         {1, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000 >> 1,
 42          WM8350_BCLK_DIV_48, WM8350_DACDIV_3, 16,},
 43 
 44         /* 16 bit stereo modes */
 45         {2, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000,
 46          WM8350_BCLK_DIV_48, WM8350_DACDIV_6, 32,},
 47         {2, SNDRV_PCM_FORMAT_S16_LE, 16000, 12288000,
 48          WM8350_BCLK_DIV_24, WM8350_DACDIV_3, 32,},
 49         {2, SNDRV_PCM_FORMAT_S16_LE, 32000, 12288000,
 50          WM8350_BCLK_DIV_12, WM8350_DACDIV_1_5, 32,},
 51         {2, SNDRV_PCM_FORMAT_S16_LE, 48000, 12288000,
 52          WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
 53         {2, SNDRV_PCM_FORMAT_S16_LE, 96000, 24576000,
 54          WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
 55         {2, SNDRV_PCM_FORMAT_S16_LE, 11025, 11289600,
 56          WM8350_BCLK_DIV_32, WM8350_DACDIV_4, 32,},
 57         {2, SNDRV_PCM_FORMAT_S16_LE, 22050, 11289600,
 58          WM8350_BCLK_DIV_16, WM8350_DACDIV_2, 32,},
 59         {2, SNDRV_PCM_FORMAT_S16_LE, 44100, 11289600,
 60          WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
 61         {2, SNDRV_PCM_FORMAT_S16_LE, 88200, 22579200,
 62          WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
 63 
 64         /* 24bit stereo modes */
 65         {2, SNDRV_PCM_FORMAT_S24_LE, 48000, 12288000,
 66          WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
 67         {2, SNDRV_PCM_FORMAT_S24_LE, 96000, 24576000,
 68          WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
 69         {2, SNDRV_PCM_FORMAT_S24_LE, 44100, 11289600,
 70          WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
 71         {2, SNDRV_PCM_FORMAT_S24_LE, 88200, 22579200,
 72          WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
 73 };
 74 
 75 static int wm1133_ev1_hw_params(struct snd_pcm_substream *substream,
 76                                 struct snd_pcm_hw_params *params)
 77 {
 78         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 79         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 80         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 81         int i, found = 0;
 82         snd_pcm_format_t format = params_format(params);
 83         unsigned int rate = params_rate(params);
 84         unsigned int channels = params_channels(params);
 85 
 86         /* find the correct audio parameters */
 87         for (i = 0; i < ARRAY_SIZE(wm8350_audio); i++) {
 88                 if (rate == wm8350_audio[i].rate &&
 89                     format == wm8350_audio[i].format &&
 90                     channels == wm8350_audio[i].channels) {
 91                         found = 1;
 92                         break;
 93                 }
 94         }
 95         if (!found)
 96                 return -EINVAL;
 97 
 98         /* codec FLL input is 14.75 MHz from MCLK */
 99         snd_soc_dai_set_pll(codec_dai, 0, 0, 14750000, wm8350_audio[i].sysclk);
100 
101         /* TODO: The SSI driver should figure this out for us */
102         switch (channels) {
103         case 2:
104                 snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0);
105                 break;
106         case 1:
107                 snd_soc_dai_set_tdm_slot(cpu_dai, 0x1, 0x1, 1, 0);
108                 break;
109         default:
110                 return -EINVAL;
111         }
112 
113         /* set MCLK as the codec system clock for DAC and ADC */
114         snd_soc_dai_set_sysclk(codec_dai, WM8350_MCLK_SEL_PLL_MCLK,
115                                wm8350_audio[i].sysclk, SND_SOC_CLOCK_IN);
116 
117         /* set codec BCLK division for sample rate */
118         snd_soc_dai_set_clkdiv(codec_dai, WM8350_BCLK_CLKDIV,
119                                wm8350_audio[i].bclkdiv);
120 
121         /* DAI is synchronous and clocked with DAC LRCLK & ADC LRC */
122         snd_soc_dai_set_clkdiv(codec_dai,
123                                WM8350_DACLR_CLKDIV, wm8350_audio[i].lr_rate);
124         snd_soc_dai_set_clkdiv(codec_dai,
125                                WM8350_ADCLR_CLKDIV, wm8350_audio[i].lr_rate);
126 
127         /* now configure DAC and ADC clocks */
128         snd_soc_dai_set_clkdiv(codec_dai,
129                                WM8350_DAC_CLKDIV, wm8350_audio[i].clkdiv);
130 
131         snd_soc_dai_set_clkdiv(codec_dai,
132                                WM8350_ADC_CLKDIV, wm8350_audio[i].clkdiv);
133 
134         return 0;
135 }
136 
137 static const struct snd_soc_ops wm1133_ev1_ops = {
138         .hw_params = wm1133_ev1_hw_params,
139 };
140 
141 static const struct snd_soc_dapm_widget wm1133_ev1_widgets[] = {
142 #ifdef USE_SIMIC
143         SND_SOC_DAPM_MIC("SiMIC", NULL),
144 #endif
145         SND_SOC_DAPM_MIC("Mic1 Jack", NULL),
146         SND_SOC_DAPM_MIC("Mic2 Jack", NULL),
147         SND_SOC_DAPM_LINE("Line In Jack", NULL),
148         SND_SOC_DAPM_LINE("Line Out Jack", NULL),
149         SND_SOC_DAPM_HP("Headphone Jack", NULL),
150 };
151 
152 /* imx32ads soc_card audio map */
153 static const struct snd_soc_dapm_route wm1133_ev1_map[] = {
154 
155 #ifdef USE_SIMIC
156         /* SiMIC --> IN1LN (with automatic bias) via SP1 */
157         { "IN1LN", NULL, "Mic Bias" },
158         { "Mic Bias", NULL, "SiMIC" },
159 #endif
160 
161         /* Mic 1 Jack --> IN1LN and IN1LP (with automatic bias) */
162         { "IN1LN", NULL, "Mic Bias" },
163         { "IN1LP", NULL, "Mic1 Jack" },
164         { "Mic Bias", NULL, "Mic1 Jack" },
165 
166         /* Mic 2 Jack --> IN1RN and IN1RP (with automatic bias) */
167         { "IN1RN", NULL, "Mic Bias" },
168         { "IN1RP", NULL, "Mic2 Jack" },
169         { "Mic Bias", NULL, "Mic2 Jack" },
170 
171         /* Line in Jack --> AUX (L+R) */
172         { "IN3R", NULL, "Line In Jack" },
173         { "IN3L", NULL, "Line In Jack" },
174 
175         /* Out1 --> Headphone Jack */
176         { "Headphone Jack", NULL, "OUT1R" },
177         { "Headphone Jack", NULL, "OUT1L" },
178 
179         /* Out1 --> Line Out Jack */
180         { "Line Out Jack", NULL, "OUT2R" },
181         { "Line Out Jack", NULL, "OUT2L" },
182 };
183 
184 static struct snd_soc_jack hp_jack;
185 
186 static struct snd_soc_jack_pin hp_jack_pins[] = {
187         { .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE },
188 };
189 
190 static struct snd_soc_jack mic_jack;
191 
192 static struct snd_soc_jack_pin mic_jack_pins[] = {
193         { .pin = "Mic1 Jack", .mask = SND_JACK_MICROPHONE },
194         { .pin = "Mic2 Jack", .mask = SND_JACK_MICROPHONE },
195 };
196 
197 static int wm1133_ev1_init(struct snd_soc_pcm_runtime *rtd)
198 {
199         struct snd_soc_component *component = rtd->codec_dai->component;
200 
201         /* Headphone jack detection */
202         snd_soc_card_jack_new(rtd->card, "Headphone", SND_JACK_HEADPHONE,
203                               &hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins));
204         wm8350_hp_jack_detect(component, WM8350_JDR, &hp_jack, SND_JACK_HEADPHONE);
205 
206         /* Microphone jack detection */
207         snd_soc_card_jack_new(rtd->card, "Microphone",
208                               SND_JACK_MICROPHONE | SND_JACK_BTN_0, &mic_jack,
209                               mic_jack_pins, ARRAY_SIZE(mic_jack_pins));
210         wm8350_mic_jack_detect(component, &mic_jack, SND_JACK_MICROPHONE,
211                                SND_JACK_BTN_0);
212 
213         snd_soc_dapm_force_enable_pin(&rtd->card->dapm, "Mic Bias");
214 
215         return 0;
216 }
217 
218 
219 SND_SOC_DAILINK_DEFS(ev1,
220         DAILINK_COMP_ARRAY(COMP_CPU("imx-ssi.0")),
221         DAILINK_COMP_ARRAY(COMP_CODEC("wm8350-codec.0-0x1a", "wm8350-hifi")),
222         DAILINK_COMP_ARRAY(COMP_PLATFORM("imx-ssi.0")));
223 
224 static struct snd_soc_dai_link wm1133_ev1_dai = {
225         .name = "WM1133-EV1",
226         .stream_name = "Audio",
227         .init = wm1133_ev1_init,
228         .ops = &wm1133_ev1_ops,
229         .symmetric_rates = 1,
230         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
231                    SND_SOC_DAIFMT_CBM_CFM,
232         SND_SOC_DAILINK_REG(ev1),
233 };
234 
235 static struct snd_soc_card wm1133_ev1 = {
236         .name = "WM1133-EV1",
237         .owner = THIS_MODULE,
238         .dai_link = &wm1133_ev1_dai,
239         .num_links = 1,
240 
241         .dapm_widgets = wm1133_ev1_widgets,
242         .num_dapm_widgets = ARRAY_SIZE(wm1133_ev1_widgets),
243         .dapm_routes = wm1133_ev1_map,
244         .num_dapm_routes = ARRAY_SIZE(wm1133_ev1_map),
245 };
246 
247 static struct platform_device *wm1133_ev1_snd_device;
248 
249 static int __init wm1133_ev1_audio_init(void)
250 {
251         int ret;
252         unsigned int ptcr, pdcr;
253 
254         /* SSI0 mastered by port 5 */
255         ptcr = IMX_AUDMUX_V2_PTCR_SYN |
256                 IMX_AUDMUX_V2_PTCR_TFSDIR |
257                 IMX_AUDMUX_V2_PTCR_TFSEL(MX31_AUDMUX_PORT5_SSI_PINS_5) |
258                 IMX_AUDMUX_V2_PTCR_TCLKDIR |
259                 IMX_AUDMUX_V2_PTCR_TCSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
260         pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
261         imx_audmux_v2_configure_port(MX31_AUDMUX_PORT1_SSI0, ptcr, pdcr);
262 
263         ptcr = IMX_AUDMUX_V2_PTCR_SYN;
264         pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT1_SSI0);
265         imx_audmux_v2_configure_port(MX31_AUDMUX_PORT5_SSI_PINS_5, ptcr, pdcr);
266 
267         wm1133_ev1_snd_device = platform_device_alloc("soc-audio", -1);
268         if (!wm1133_ev1_snd_device)
269                 return -ENOMEM;
270 
271         platform_set_drvdata(wm1133_ev1_snd_device, &wm1133_ev1);
272         ret = platform_device_add(wm1133_ev1_snd_device);
273 
274         if (ret)
275                 platform_device_put(wm1133_ev1_snd_device);
276 
277         return ret;
278 }
279 module_init(wm1133_ev1_audio_init);
280 
281 static void __exit wm1133_ev1_audio_exit(void)
282 {
283         platform_device_unregister(wm1133_ev1_snd_device);
284 }
285 module_exit(wm1133_ev1_audio_exit);
286 
287 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
288 MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS");
289 MODULE_LICENSE("GPL");
290 

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