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Linux/sound/soc/samsung/neo1973_wm8753.c

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  1 // SPDX-License-Identifier: GPL-2.0+
  2 //
  3 // neo1973_wm8753.c - SoC audio for Openmoko Neo1973 and Freerunner devices
  4 //
  5 // Copyright 2007 Openmoko Inc
  6 // Author: Graeme Gregory <graeme@openmoko.org>
  7 // Copyright 2007 Wolfson Microelectronics PLC.
  8 // Author: Graeme Gregory
  9 //         graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
 10 // Copyright 2009 Wolfson Microelectronics
 11 
 12 #include <linux/module.h>
 13 #include <linux/platform_device.h>
 14 #include <linux/gpio/consumer.h>
 15 
 16 #include <sound/soc.h>
 17 
 18 #include "regs-iis.h"
 19 #include "../codecs/wm8753.h"
 20 #include "s3c24xx-i2s.h"
 21 
 22 static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
 23         struct snd_pcm_hw_params *params)
 24 {
 25         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 26         struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
 27         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 28         unsigned int pll_out = 0, bclk = 0;
 29         int ret = 0;
 30         unsigned long iis_clkrate;
 31 
 32         iis_clkrate = s3c24xx_i2s_get_clockrate();
 33 
 34         switch (params_rate(params)) {
 35         case 8000:
 36         case 16000:
 37                 pll_out = 12288000;
 38                 break;
 39         case 48000:
 40                 bclk = WM8753_BCLK_DIV_4;
 41                 pll_out = 12288000;
 42                 break;
 43         case 96000:
 44                 bclk = WM8753_BCLK_DIV_2;
 45                 pll_out = 12288000;
 46                 break;
 47         case 11025:
 48                 bclk = WM8753_BCLK_DIV_16;
 49                 pll_out = 11289600;
 50                 break;
 51         case 22050:
 52                 bclk = WM8753_BCLK_DIV_8;
 53                 pll_out = 11289600;
 54                 break;
 55         case 44100:
 56                 bclk = WM8753_BCLK_DIV_4;
 57                 pll_out = 11289600;
 58                 break;
 59         case 88200:
 60                 bclk = WM8753_BCLK_DIV_2;
 61                 pll_out = 11289600;
 62                 break;
 63         }
 64 
 65         /* set the codec system clock for DAC and ADC */
 66         ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
 67                 SND_SOC_CLOCK_IN);
 68         if (ret < 0)
 69                 return ret;
 70 
 71         /* set MCLK division for sample rate */
 72         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
 73                 S3C2410_IISMOD_32FS);
 74         if (ret < 0)
 75                 return ret;
 76 
 77         /* set codec BCLK division for sample rate */
 78         ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
 79         if (ret < 0)
 80                 return ret;
 81 
 82         /* set prescaler division for sample rate */
 83         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
 84                 S3C24XX_PRESCALE(4, 4));
 85         if (ret < 0)
 86                 return ret;
 87 
 88         /* codec PLL input is PCLK/4 */
 89         ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0,
 90                 iis_clkrate / 4, pll_out);
 91         if (ret < 0)
 92                 return ret;
 93 
 94         return 0;
 95 }
 96 
 97 static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
 98 {
 99         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
100         struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
101 
102         /* disable the PLL */
103         return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0);
104 }
105 
106 /*
107  * Neo1973 WM8753 HiFi DAI opserations.
108  */
109 static struct snd_soc_ops neo1973_hifi_ops = {
110         .hw_params = neo1973_hifi_hw_params,
111         .hw_free = neo1973_hifi_hw_free,
112 };
113 
114 static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
115         struct snd_pcm_hw_params *params)
116 {
117         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
118         struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
119         unsigned int pcmdiv = 0;
120         int ret = 0;
121         unsigned long iis_clkrate;
122 
123         iis_clkrate = s3c24xx_i2s_get_clockrate();
124 
125         if (params_rate(params) != 8000)
126                 return -EINVAL;
127         if (params_channels(params) != 1)
128                 return -EINVAL;
129 
130         pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
131 
132         /* set the codec system clock for DAC and ADC */
133         ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
134                 SND_SOC_CLOCK_IN);
135         if (ret < 0)
136                 return ret;
137 
138         /* set codec PCM division for sample rate */
139         ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
140         if (ret < 0)
141                 return ret;
142 
143         /* configure and enable PLL for 12.288MHz output */
144         ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0,
145                 iis_clkrate / 4, 12288000);
146         if (ret < 0)
147                 return ret;
148 
149         return 0;
150 }
151 
152 static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
153 {
154         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
155         struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
156 
157         /* disable the PLL */
158         return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0);
159 }
160 
161 static struct snd_soc_ops neo1973_voice_ops = {
162         .hw_params = neo1973_voice_hw_params,
163         .hw_free = neo1973_voice_hw_free,
164 };
165 
166 static struct gpio_desc *gpiod_hp_in, *gpiod_amp_shut;
167 static int gta02_speaker_enabled;
168 
169 static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
170         struct snd_ctl_elem_value *ucontrol)
171 {
172         gta02_speaker_enabled = ucontrol->value.integer.value[0];
173 
174         gpiod_set_value(gpiod_hp_in, !gta02_speaker_enabled);
175 
176         return 0;
177 }
178 
179 static int lm4853_get_spk(struct snd_kcontrol *kcontrol,
180         struct snd_ctl_elem_value *ucontrol)
181 {
182         ucontrol->value.integer.value[0] = gta02_speaker_enabled;
183         return 0;
184 }
185 
186 static int lm4853_event(struct snd_soc_dapm_widget *w,
187                         struct snd_kcontrol *k, int event)
188 {
189         gpiod_set_value(gpiod_amp_shut, SND_SOC_DAPM_EVENT_OFF(event));
190 
191         return 0;
192 }
193 
194 static const struct snd_soc_dapm_widget neo1973_wm8753_dapm_widgets[] = {
195         SND_SOC_DAPM_LINE("GSM Line Out", NULL),
196         SND_SOC_DAPM_LINE("GSM Line In", NULL),
197         SND_SOC_DAPM_MIC("Headset Mic", NULL),
198         SND_SOC_DAPM_MIC("Handset Mic", NULL),
199         SND_SOC_DAPM_SPK("Handset Spk", NULL),
200         SND_SOC_DAPM_SPK("Stereo Out", lm4853_event),
201 };
202 
203 static const struct snd_soc_dapm_route neo1973_wm8753_routes[] = {
204         /* Connections to the GSM Module */
205         {"GSM Line Out", NULL, "MONO1"},
206         {"GSM Line Out", NULL, "MONO2"},
207         {"RXP", NULL, "GSM Line In"},
208         {"RXN", NULL, "GSM Line In"},
209 
210         /* Connections to Headset */
211         {"MIC1", NULL, "Mic Bias"},
212         {"Mic Bias", NULL, "Headset Mic"},
213 
214         /* Call Mic */
215         {"MIC2", NULL, "Mic Bias"},
216         {"MIC2N", NULL, "Mic Bias"},
217         {"Mic Bias", NULL, "Handset Mic"},
218 
219         /* Connect the ALC pins */
220         {"ACIN", NULL, "ACOP"},
221 
222         /* Connections to the amp */
223         {"Stereo Out", NULL, "LOUT1"},
224         {"Stereo Out", NULL, "ROUT1"},
225 
226         /* Call Speaker */
227         {"Handset Spk", NULL, "LOUT2"},
228         {"Handset Spk", NULL, "ROUT2"},
229 };
230 
231 static const struct snd_kcontrol_new neo1973_wm8753_controls[] = {
232         SOC_DAPM_PIN_SWITCH("GSM Line Out"),
233         SOC_DAPM_PIN_SWITCH("GSM Line In"),
234         SOC_DAPM_PIN_SWITCH("Headset Mic"),
235         SOC_DAPM_PIN_SWITCH("Handset Mic"),
236         SOC_DAPM_PIN_SWITCH("Handset Spk"),
237         SOC_DAPM_PIN_SWITCH("Stereo Out"),
238 
239         SOC_SINGLE_BOOL_EXT("Amp Spk Switch", 0,
240                 lm4853_get_spk,
241                 lm4853_set_spk),
242 };
243 
244 static int neo1973_wm8753_init(struct snd_soc_pcm_runtime *rtd)
245 {
246         struct snd_soc_card *card = rtd->card;
247 
248         /* set endpoints to default off mode */
249         snd_soc_dapm_disable_pin(&card->dapm, "GSM Line Out");
250         snd_soc_dapm_disable_pin(&card->dapm, "GSM Line In");
251         snd_soc_dapm_disable_pin(&card->dapm, "Headset Mic");
252         snd_soc_dapm_disable_pin(&card->dapm, "Handset Mic");
253         snd_soc_dapm_disable_pin(&card->dapm, "Stereo Out");
254         snd_soc_dapm_disable_pin(&card->dapm, "Handset Spk");
255 
256         /* allow audio paths from the GSM modem to run during suspend */
257         snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line Out");
258         snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line In");
259         snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
260         snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Mic");
261         snd_soc_dapm_ignore_suspend(&card->dapm, "Stereo Out");
262         snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Spk");
263 
264         return 0;
265 }
266 
267 SND_SOC_DAILINK_DEFS(wm8753,
268         DAILINK_COMP_ARRAY(COMP_CPU("s3c24xx-iis")),
269         DAILINK_COMP_ARRAY(COMP_CODEC("wm8753.0-001a", "wm8753-hifi")),
270         DAILINK_COMP_ARRAY(COMP_PLATFORM("s3c24xx-iis")));
271 
272 SND_SOC_DAILINK_DEFS(bluetooth,
273         DAILINK_COMP_ARRAY(COMP_CPU("bt-sco-pcm")),
274         DAILINK_COMP_ARRAY(COMP_CODEC("wm8753.0-001a", "wm8753-voice")));
275 
276 static struct snd_soc_dai_link neo1973_dai[] = {
277 { /* Hifi Playback - for similatious use with voice below */
278         .name = "WM8753",
279         .stream_name = "WM8753 HiFi",
280         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
281                    SND_SOC_DAIFMT_CBM_CFM,
282         .init = neo1973_wm8753_init,
283         .ops = &neo1973_hifi_ops,
284         SND_SOC_DAILINK_REG(wm8753),
285 },
286 { /* Voice via BT */
287         .name = "Bluetooth",
288         .stream_name = "Voice",
289         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
290                    SND_SOC_DAIFMT_CBS_CFS,
291         .ops = &neo1973_voice_ops,
292         SND_SOC_DAILINK_REG(bluetooth),
293 },
294 };
295 
296 static struct snd_soc_aux_dev neo1973_aux_devs[] = {
297         {
298                 .dlc = COMP_AUX("dfbmcs320.0"),
299         },
300 };
301 
302 static struct snd_soc_codec_conf neo1973_codec_conf[] = {
303         {
304                 .dlc = COMP_CODEC_CONF("lm4857.0-007c"),
305                 .name_prefix = "Amp",
306         },
307 };
308 
309 static struct snd_soc_card neo1973 = {
310         .name = "neo1973gta02",
311         .owner = THIS_MODULE,
312         .dai_link = neo1973_dai,
313         .num_links = ARRAY_SIZE(neo1973_dai),
314         .aux_dev = neo1973_aux_devs,
315         .num_aux_devs = ARRAY_SIZE(neo1973_aux_devs),
316         .codec_conf = neo1973_codec_conf,
317         .num_configs = ARRAY_SIZE(neo1973_codec_conf),
318 
319         .controls = neo1973_wm8753_controls,
320         .num_controls = ARRAY_SIZE(neo1973_wm8753_controls),
321         .dapm_widgets = neo1973_wm8753_dapm_widgets,
322         .num_dapm_widgets = ARRAY_SIZE(neo1973_wm8753_dapm_widgets),
323         .dapm_routes = neo1973_wm8753_routes,
324         .num_dapm_routes = ARRAY_SIZE(neo1973_wm8753_routes),
325         .fully_routed = true,
326 };
327 
328 static int neo1973_probe(struct platform_device *pdev)
329 {
330         struct device *dev = &pdev->dev;
331 
332         gpiod_hp_in = devm_gpiod_get(dev, "hp", GPIOD_OUT_HIGH);
333         if (IS_ERR(gpiod_hp_in)) {
334                 dev_err(dev, "missing gpio %s\n", "hp");
335                 return PTR_ERR(gpiod_hp_in);
336         }
337         gpiod_amp_shut = devm_gpiod_get(dev, "amp-shut", GPIOD_OUT_HIGH);
338         if (IS_ERR(gpiod_amp_shut)) {
339                 dev_err(dev, "missing gpio %s\n", "amp-shut");
340                 return PTR_ERR(gpiod_amp_shut);
341         }
342 
343         neo1973.dev = dev;
344         return devm_snd_soc_register_card(dev, &neo1973);
345 }
346 
347 struct platform_driver neo1973_audio = {
348         .driver = {
349                 .name = "neo1973-audio",
350                 .pm = &snd_soc_pm_ops,
351         },
352         .probe = neo1973_probe,
353 };
354 module_platform_driver(neo1973_audio);
355 
356 /* Module information */
357 MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
358 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 and Frerunner");
359 MODULE_LICENSE("GPL");
360 MODULE_ALIAS("platform:neo1973-audio");
361 

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