soc/samsung/neo1973_wm8753.c

0001 // SPDX-License-Identifier: GPL-2.0+
0002 //
0003 // neo1973_wm8753.c - SoC audio for Openmoko Neo1973 and Freerunner devices
0004 //
0005 // Copyright 2007 Openmoko Inc
0006 // Author: Graeme Gregory <graeme@openmoko.org>
0007 // Copyright 2007 Wolfson Microelectronics PLC.
0008 // Author: Graeme Gregory
0009 //         graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
0010 // Copyright 2009 Wolfson Microelectronics
0011
0012 #include <linux/module.h>
0013 #include <linux/platform_device.h>
0014 #include <linux/gpio/consumer.h>
0015
0016 #include <sound/soc.h>
0017
0018 #include "regs-iis.h"
0019 #include "../codecs/wm8753.h"
0020 #include "s3c24xx-i2s.h"
0021
0022 static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
0023     struct snd_pcm_hw_params *params)
0024 {
0025     struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
0026     struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
0027     struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
0028     unsigned int pll_out = 0, bclk = 0;
0029     int ret = 0;
0030     unsigned long iis_clkrate;
0031
0032     iis_clkrate = s3c24xx_i2s_get_clockrate();
0033
0034     switch (params_rate(params)) {
0035     case 8000:
0036     case 16000:
0037         pll_out = 12288000;
0038         break;
0039     case 48000:
0040         bclk = WM8753_BCLK_DIV_4;
0041         pll_out = 12288000;
0042         break;
0043     case 96000:
0044         bclk = WM8753_BCLK_DIV_2;
0045         pll_out = 12288000;
0046         break;
0047     case 11025:
0048         bclk = WM8753_BCLK_DIV_16;
0049         pll_out = 11289600;
0050         break;
0051     case 22050:
0052         bclk = WM8753_BCLK_DIV_8;
0053         pll_out = 11289600;
0054         break;
0055     case 44100:
0056         bclk = WM8753_BCLK_DIV_4;
0057         pll_out = 11289600;
0058         break;
0059     case 88200:
0060         bclk = WM8753_BCLK_DIV_2;
0061         pll_out = 11289600;
0062         break;
0063     }
0064
0065     /* set the codec system clock for DAC and ADC */
0066     ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
0067         SND_SOC_CLOCK_IN);
0068     if (ret < 0)
0069         return ret;
0070
0071     /* set MCLK division for sample rate */
0072     ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
0073         S3C2410_IISMOD_32FS);
0074     if (ret < 0)
0075         return ret;
0076
0077     /* set codec BCLK division for sample rate */
0078     ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
0079     if (ret < 0)
0080         return ret;
0081
0082     /* set prescaler division for sample rate */
0083     ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
0084         S3C24XX_PRESCALE(4, 4));
0085     if (ret < 0)
0086         return ret;
0087
0088     /* codec PLL input is PCLK/4 */
0089     ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0,
0090         iis_clkrate / 4, pll_out);
0091     if (ret < 0)
0092         return ret;
0093
0094     return 0;
0095 }
0096
0097 static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
0098 {
0099     struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
0100     struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
0101
0102     /* disable the PLL */
0103     return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0);
0104 }
0105
0106 /*
0107  * Neo1973 WM8753 HiFi DAI opserations.
0108  */
0109 static const struct snd_soc_ops neo1973_hifi_ops = {
0110     .hw_params = neo1973_hifi_hw_params,
0111     .hw_free = neo1973_hifi_hw_free,
0112 };
0113
0114 static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
0115     struct snd_pcm_hw_params *params)
0116 {
0117     struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
0118     struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
0119     unsigned int pcmdiv = 0;
0120     int ret = 0;
0121     unsigned long iis_clkrate;
0122
0123     iis_clkrate = s3c24xx_i2s_get_clockrate();
0124
0125     if (params_rate(params) != 8000)
0126         return -EINVAL;
0127     if (params_channels(params) != 1)
0128         return -EINVAL;
0129
0130     pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
0131
0132     /* set the codec system clock for DAC and ADC */
0133     ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
0134         SND_SOC_CLOCK_IN);
0135     if (ret < 0)
0136         return ret;
0137
0138     /* set codec PCM division for sample rate */
0139     ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
0140     if (ret < 0)
0141         return ret;
0142
0143     /* configure and enable PLL for 12.288MHz output */
0144     ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0,
0145         iis_clkrate / 4, 12288000);
0146     if (ret < 0)
0147         return ret;
0148
0149     return 0;
0150 }
0151
0152 static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
0153 {
0154     struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
0155     struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
0156
0157     /* disable the PLL */
0158     return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0);
0159 }
0160
0161 static const struct snd_soc_ops neo1973_voice_ops = {
0162     .hw_params = neo1973_voice_hw_params,
0163     .hw_free = neo1973_voice_hw_free,
0164 };
0165
0166 static struct gpio_desc *gpiod_hp_in, *gpiod_amp_shut;
0167 static int gta02_speaker_enabled;
0168
0169 static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
0170     struct snd_ctl_elem_value *ucontrol)
0171 {
0172     gta02_speaker_enabled = ucontrol->value.integer.value[0];
0173
0174     gpiod_set_value(gpiod_hp_in, !gta02_speaker_enabled);
0175
0176     return 0;
0177 }
0178
0179 static int lm4853_get_spk(struct snd_kcontrol *kcontrol,
0180     struct snd_ctl_elem_value *ucontrol)
0181 {
0182     ucontrol->value.integer.value[0] = gta02_speaker_enabled;
0183     return 0;
0184 }
0185
0186 static int lm4853_event(struct snd_soc_dapm_widget *w,
0187             struct snd_kcontrol *k, int event)
0188 {
0189     gpiod_set_value(gpiod_amp_shut, SND_SOC_DAPM_EVENT_OFF(event));
0190
0191     return 0;
0192 }
0193
0194 static const struct snd_soc_dapm_widget neo1973_wm8753_dapm_widgets[] = {
0195     SND_SOC_DAPM_LINE("GSM Line Out", NULL),
0196     SND_SOC_DAPM_LINE("GSM Line In", NULL),
0197     SND_SOC_DAPM_MIC("Headset Mic", NULL),
0198     SND_SOC_DAPM_MIC("Handset Mic", NULL),
0199     SND_SOC_DAPM_SPK("Handset Spk", NULL),
0200     SND_SOC_DAPM_SPK("Stereo Out", lm4853_event),
0201 };
0202
0203 static const struct snd_soc_dapm_route neo1973_wm8753_routes[] = {
0204     /* Connections to the GSM Module */
0205     {"GSM Line Out", NULL, "MONO1"},
0206     {"GSM Line Out", NULL, "MONO2"},
0207     {"RXP", NULL, "GSM Line In"},
0208     {"RXN", NULL, "GSM Line In"},
0209
0210     /* Connections to Headset */
0211     {"MIC1", NULL, "Mic Bias"},
0212     {"Mic Bias", NULL, "Headset Mic"},
0213
0214     /* Call Mic */
0215     {"MIC2", NULL, "Mic Bias"},
0216     {"MIC2N", NULL, "Mic Bias"},
0217     {"Mic Bias", NULL, "Handset Mic"},
0218
0219     /* Connect the ALC pins */
0220     {"ACIN", NULL, "ACOP"},
0221
0222     /* Connections to the amp */
0223     {"Stereo Out", NULL, "LOUT1"},
0224     {"Stereo Out", NULL, "ROUT1"},
0225
0226     /* Call Speaker */
0227     {"Handset Spk", NULL, "LOUT2"},
0228     {"Handset Spk", NULL, "ROUT2"},
0229 };
0230
0231 static const struct snd_kcontrol_new neo1973_wm8753_controls[] = {
0232     SOC_DAPM_PIN_SWITCH("GSM Line Out"),
0233     SOC_DAPM_PIN_SWITCH("GSM Line In"),
0234     SOC_DAPM_PIN_SWITCH("Headset Mic"),
0235     SOC_DAPM_PIN_SWITCH("Handset Mic"),
0236     SOC_DAPM_PIN_SWITCH("Handset Spk"),
0237     SOC_DAPM_PIN_SWITCH("Stereo Out"),
0238
0239     SOC_SINGLE_BOOL_EXT("Amp Spk Switch", 0,
0240         lm4853_get_spk,
0241         lm4853_set_spk),
0242 };
0243
0244 static int neo1973_wm8753_init(struct snd_soc_pcm_runtime *rtd)
0245 {
0246     struct snd_soc_card *card = rtd->card;
0247
0248     /* set endpoints to default off mode */
0249     snd_soc_dapm_disable_pin(&card->dapm, "GSM Line Out");
0250     snd_soc_dapm_disable_pin(&card->dapm, "GSM Line In");
0251     snd_soc_dapm_disable_pin(&card->dapm, "Headset Mic");
0252     snd_soc_dapm_disable_pin(&card->dapm, "Handset Mic");
0253     snd_soc_dapm_disable_pin(&card->dapm, "Stereo Out");
0254     snd_soc_dapm_disable_pin(&card->dapm, "Handset Spk");
0255
0256     /* allow audio paths from the GSM modem to run during suspend */
0257     snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line Out");
0258     snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line In");
0259     snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
0260     snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Mic");
0261     snd_soc_dapm_ignore_suspend(&card->dapm, "Stereo Out");
0262     snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Spk");
0263
0264     return 0;
0265 }
0266
0267 SND_SOC_DAILINK_DEFS(wm8753,
0268     DAILINK_COMP_ARRAY(COMP_CPU("s3c24xx-iis")),
0269     DAILINK_COMP_ARRAY(COMP_CODEC("wm8753.0-001a", "wm8753-hifi")),
0270     DAILINK_COMP_ARRAY(COMP_PLATFORM("s3c24xx-iis")));
0271
0272 SND_SOC_DAILINK_DEFS(bluetooth,
0273     DAILINK_COMP_ARRAY(COMP_CPU("bt-sco-pcm")),
0274     DAILINK_COMP_ARRAY(COMP_CODEC("wm8753.0-001a", "wm8753-voice")));
0275
0276 static struct snd_soc_dai_link neo1973_dai[] = {
0277 { /* Hifi Playback - for similatious use with voice below */
0278     .name = "WM8753",
0279     .stream_name = "WM8753 HiFi",
0280     .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
0281            SND_SOC_DAIFMT_CBM_CFM,
0282     .init = neo1973_wm8753_init,
0283     .ops = &neo1973_hifi_ops,
0284     SND_SOC_DAILINK_REG(wm8753),
0285 },
0286 { /* Voice via BT */
0287     .name = "Bluetooth",
0288     .stream_name = "Voice",
0289     .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
0290            SND_SOC_DAIFMT_CBS_CFS,
0291     .ops = &neo1973_voice_ops,
0292     SND_SOC_DAILINK_REG(bluetooth),
0293 },
0294 };
0295
0296 static struct snd_soc_aux_dev neo1973_aux_devs[] = {
0297     {
0298         .dlc = COMP_AUX("dfbmcs320.0"),
0299     },
0300 };
0301
0302 static struct snd_soc_codec_conf neo1973_codec_conf[] = {
0303     {
0304         .dlc = COMP_CODEC_CONF("lm4857.0-007c"),
0305         .name_prefix = "Amp",
0306     },
0307 };
0308
0309 static struct snd_soc_card neo1973 = {
0310     .name = "neo1973gta02",
0311     .owner = THIS_MODULE,
0312     .dai_link = neo1973_dai,
0313     .num_links = ARRAY_SIZE(neo1973_dai),
0314     .aux_dev = neo1973_aux_devs,
0315     .num_aux_devs = ARRAY_SIZE(neo1973_aux_devs),
0316     .codec_conf = neo1973_codec_conf,
0317     .num_configs = ARRAY_SIZE(neo1973_codec_conf),
0318
0319     .controls = neo1973_wm8753_controls,
0320     .num_controls = ARRAY_SIZE(neo1973_wm8753_controls),
0321     .dapm_widgets = neo1973_wm8753_dapm_widgets,
0322     .num_dapm_widgets = ARRAY_SIZE(neo1973_wm8753_dapm_widgets),
0323     .dapm_routes = neo1973_wm8753_routes,
0324     .num_dapm_routes = ARRAY_SIZE(neo1973_wm8753_routes),
0325     .fully_routed = true,
0326 };
0327
0328 static int neo1973_probe(struct platform_device *pdev)
0329 {
0330     struct device *dev = &pdev->dev;
0331
0332     gpiod_hp_in = devm_gpiod_get(dev, "hp", GPIOD_OUT_HIGH);
0333     if (IS_ERR(gpiod_hp_in)) {
0334         dev_err(dev, "missing gpio %s\n", "hp");
0335         return PTR_ERR(gpiod_hp_in);
0336     }
0337     gpiod_amp_shut = devm_gpiod_get(dev, "amp-shut", GPIOD_OUT_HIGH);
0338     if (IS_ERR(gpiod_amp_shut)) {
0339         dev_err(dev, "missing gpio %s\n", "amp-shut");
0340         return PTR_ERR(gpiod_amp_shut);
0341     }
0342
0343     neo1973.dev = dev;
0344     return devm_snd_soc_register_card(dev, &neo1973);
0345 }
0346
0347 static struct platform_driver neo1973_audio = {
0348     .driver = {
0349         .name = "neo1973-audio",
0350         .pm = &snd_soc_pm_ops,
0351     },
0352     .probe = neo1973_probe,
0353 };
0354 module_platform_driver(neo1973_audio);
0355
0356 /* Module information */
0357 MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
0358 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 and Frerunner");
0359 MODULE_LICENSE("GPL");
0360 MODULE_ALIAS("platform:neo1973-audio");