| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * zylonite.c -- SoC audio for Zylonite |
| * |
| * Copyright 2008 Wolfson Microelectronics PLC. |
| * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/device.h> |
| #include <linux/clk.h> |
| #include <linux/i2c.h> |
| #include <sound/core.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| |
| #include "../codecs/wm9713.h" |
| #include "pxa-ssp.h" |
| |
| /* |
| * There is a physical switch SW15 on the board which changes the MCLK |
| * for the WM9713 between the standard AC97 master clock and the |
| * output of the CLK_POUT signal from the PXA. |
| */ |
| static int clk_pout; |
| module_param(clk_pout, int, 0); |
| MODULE_PARM_DESC(clk_pout, "Use CLK_POUT as WM9713 MCLK (SW15 on board)."); |
| |
| static struct clk *pout; |
| |
| static struct snd_soc_card zylonite; |
| |
| static const struct snd_soc_dapm_widget zylonite_dapm_widgets[] = { |
| SND_SOC_DAPM_HP("Headphone", NULL), |
| SND_SOC_DAPM_MIC("Headset Microphone", NULL), |
| SND_SOC_DAPM_MIC("Handset Microphone", NULL), |
| SND_SOC_DAPM_SPK("Multiactor", NULL), |
| SND_SOC_DAPM_SPK("Headset Earpiece", NULL), |
| }; |
| |
| /* Currently supported audio map */ |
| static const struct snd_soc_dapm_route audio_map[] = { |
| |
| /* Headphone output connected to HPL/HPR */ |
| { "Headphone", NULL, "HPL" }, |
| { "Headphone", NULL, "HPR" }, |
| |
| /* On-board earpiece */ |
| { "Headset Earpiece", NULL, "OUT3" }, |
| |
| /* Headphone mic */ |
| { "MIC2A", NULL, "Mic Bias" }, |
| { "Mic Bias", NULL, "Headset Microphone" }, |
| |
| /* On-board mic */ |
| { "MIC1", NULL, "Mic Bias" }, |
| { "Mic Bias", NULL, "Handset Microphone" }, |
| |
| /* Multiactor differentially connected over SPKL/SPKR */ |
| { "Multiactor", NULL, "SPKL" }, |
| { "Multiactor", NULL, "SPKR" }, |
| }; |
| |
| static int zylonite_wm9713_init(struct snd_soc_pcm_runtime *rtd) |
| { |
| if (clk_pout) |
| snd_soc_dai_set_pll(rtd->codec_dai, 0, 0, |
| clk_get_rate(pout), 0); |
| |
| return 0; |
| } |
| |
| static int zylonite_voice_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| unsigned int wm9713_div = 0; |
| int ret = 0; |
| int rate = params_rate(params); |
| |
| /* Only support ratios that we can generate neatly from the AC97 |
| * based master clock - in particular, this excludes 44.1kHz. |
| * In most applications the voice DAC will be used for telephony |
| * data so multiples of 8kHz will be the common case. |
| */ |
| switch (rate) { |
| case 8000: |
| wm9713_div = 12; |
| break; |
| case 16000: |
| wm9713_div = 6; |
| break; |
| case 48000: |
| wm9713_div = 2; |
| break; |
| default: |
| /* Don't support OSS emulation */ |
| return -EINVAL; |
| } |
| |
| ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0, 1); |
| if (ret < 0) |
| return ret; |
| |
| if (clk_pout) |
| ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_PLL_DIV, |
| WM9713_PCMDIV(wm9713_div)); |
| else |
| ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_DIV, |
| WM9713_PCMDIV(wm9713_div)); |
| if (ret < 0) |
| return ret; |
| |
| return 0; |
| } |
| |
| static const struct snd_soc_ops zylonite_voice_ops = { |
| .hw_params = zylonite_voice_hw_params, |
| }; |
| |
| SND_SOC_DAILINK_DEFS(ac97, |
| DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97")), |
| DAILINK_COMP_ARRAY(COMP_CODEC("wm9713-codec", "wm9713-hifi")), |
| DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio"))); |
| |
| SND_SOC_DAILINK_DEFS(ac97_aux, |
| DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97-aux")), |
| DAILINK_COMP_ARRAY(COMP_CODEC("wm9713-codec", "wm9713-aux")), |
| DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio"))); |
| |
| SND_SOC_DAILINK_DEFS(voice, |
| DAILINK_COMP_ARRAY(COMP_CPU("pxa-ssp-dai.2")), |
| DAILINK_COMP_ARRAY(COMP_CODEC("wm9713-codec", "wm9713-voice")), |
| DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio"))); |
| |
| static struct snd_soc_dai_link zylonite_dai[] = { |
| { |
| .name = "AC97", |
| .stream_name = "AC97 HiFi", |
| .init = zylonite_wm9713_init, |
| SND_SOC_DAILINK_REG(ac97), |
| }, |
| { |
| .name = "AC97 Aux", |
| .stream_name = "AC97 Aux", |
| SND_SOC_DAILINK_REG(ac97_aux), |
| }, |
| { |
| .name = "WM9713 Voice", |
| .stream_name = "WM9713 Voice", |
| .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBS_CFS, |
| .ops = &zylonite_voice_ops, |
| SND_SOC_DAILINK_REG(voice), |
| }, |
| }; |
| |
| static int zylonite_probe(struct snd_soc_card *card) |
| { |
| int ret; |
| |
| if (clk_pout) { |
| pout = clk_get(NULL, "CLK_POUT"); |
| if (IS_ERR(pout)) { |
| dev_err(card->dev, "Unable to obtain CLK_POUT: %ld\n", |
| PTR_ERR(pout)); |
| return PTR_ERR(pout); |
| } |
| |
| ret = clk_enable(pout); |
| if (ret != 0) { |
| dev_err(card->dev, "Unable to enable CLK_POUT: %d\n", |
| ret); |
| clk_put(pout); |
| return ret; |
| } |
| |
| dev_dbg(card->dev, "MCLK enabled at %luHz\n", |
| clk_get_rate(pout)); |
| } |
| |
| return 0; |
| } |
| |
| static int zylonite_remove(struct snd_soc_card *card) |
| { |
| if (clk_pout) { |
| clk_disable(pout); |
| clk_put(pout); |
| } |
| |
| return 0; |
| } |
| |
| static int zylonite_suspend_post(struct snd_soc_card *card) |
| { |
| if (clk_pout) |
| clk_disable(pout); |
| |
| return 0; |
| } |
| |
| static int zylonite_resume_pre(struct snd_soc_card *card) |
| { |
| int ret = 0; |
| |
| if (clk_pout) { |
| ret = clk_enable(pout); |
| if (ret != 0) |
| dev_err(card->dev, "Unable to enable CLK_POUT: %d\n", |
| ret); |
| } |
| |
| return ret; |
| } |
| |
| static struct snd_soc_card zylonite = { |
| .name = "Zylonite", |
| .owner = THIS_MODULE, |
| .probe = &zylonite_probe, |
| .remove = &zylonite_remove, |
| .suspend_post = &zylonite_suspend_post, |
| .resume_pre = &zylonite_resume_pre, |
| .dai_link = zylonite_dai, |
| .num_links = ARRAY_SIZE(zylonite_dai), |
| |
| .dapm_widgets = zylonite_dapm_widgets, |
| .num_dapm_widgets = ARRAY_SIZE(zylonite_dapm_widgets), |
| .dapm_routes = audio_map, |
| .num_dapm_routes = ARRAY_SIZE(audio_map), |
| }; |
| |
| static struct platform_device *zylonite_snd_ac97_device; |
| |
| static int __init zylonite_init(void) |
| { |
| int ret; |
| |
| zylonite_snd_ac97_device = platform_device_alloc("soc-audio", -1); |
| if (!zylonite_snd_ac97_device) |
| return -ENOMEM; |
| |
| platform_set_drvdata(zylonite_snd_ac97_device, &zylonite); |
| |
| ret = platform_device_add(zylonite_snd_ac97_device); |
| if (ret != 0) |
| platform_device_put(zylonite_snd_ac97_device); |
| |
| return ret; |
| } |
| |
| static void __exit zylonite_exit(void) |
| { |
| platform_device_unregister(zylonite_snd_ac97_device); |
| } |
| |
| module_init(zylonite_init); |
| module_exit(zylonite_exit); |
| |
| MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); |
| MODULE_DESCRIPTION("ALSA SoC WM9713 Zylonite"); |
| MODULE_LICENSE("GPL"); |