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360 lines
9.6 KiB
360 lines
9.6 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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// |
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// neo1973_wm8753.c - SoC audio for Openmoko Neo1973 and Freerunner devices |
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// |
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// Copyright 2007 Openmoko Inc |
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// Author: Graeme Gregory <[email protected]> |
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// Copyright 2007 Wolfson Microelectronics PLC. |
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// Author: Graeme Gregory |
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// [email protected] or [email protected] |
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// Copyright 2009 Wolfson Microelectronics |
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#include <linux/module.h> |
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#include <linux/platform_device.h> |
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#include <linux/gpio/consumer.h> |
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#include <sound/soc.h> |
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#include "regs-iis.h" |
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#include "../codecs/wm8753.h" |
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#include "s3c24xx-i2s.h" |
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static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream, |
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struct snd_pcm_hw_params *params) |
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{ |
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struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
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unsigned int pll_out = 0, bclk = 0; |
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int ret = 0; |
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unsigned long iis_clkrate; |
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iis_clkrate = s3c24xx_i2s_get_clockrate(); |
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switch (params_rate(params)) { |
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case 8000: |
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case 16000: |
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pll_out = 12288000; |
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break; |
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case 48000: |
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bclk = WM8753_BCLK_DIV_4; |
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pll_out = 12288000; |
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break; |
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case 96000: |
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bclk = WM8753_BCLK_DIV_2; |
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pll_out = 12288000; |
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break; |
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case 11025: |
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bclk = WM8753_BCLK_DIV_16; |
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pll_out = 11289600; |
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break; |
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case 22050: |
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bclk = WM8753_BCLK_DIV_8; |
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pll_out = 11289600; |
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break; |
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case 44100: |
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bclk = WM8753_BCLK_DIV_4; |
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pll_out = 11289600; |
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break; |
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case 88200: |
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bclk = WM8753_BCLK_DIV_2; |
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pll_out = 11289600; |
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break; |
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} |
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/* set the codec system clock for DAC and ADC */ |
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ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out, |
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SND_SOC_CLOCK_IN); |
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if (ret < 0) |
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return ret; |
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/* set MCLK division for sample rate */ |
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ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK, |
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S3C2410_IISMOD_32FS); |
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if (ret < 0) |
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return ret; |
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/* set codec BCLK division for sample rate */ |
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ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk); |
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if (ret < 0) |
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return ret; |
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/* set prescaler division for sample rate */ |
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ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER, |
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S3C24XX_PRESCALE(4, 4)); |
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if (ret < 0) |
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return ret; |
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/* codec PLL input is PCLK/4 */ |
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ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, |
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iis_clkrate / 4, pll_out); |
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if (ret < 0) |
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return ret; |
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return 0; |
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} |
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static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream) |
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{ |
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struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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/* disable the PLL */ |
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return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0); |
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} |
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/* |
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* Neo1973 WM8753 HiFi DAI opserations. |
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*/ |
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static struct snd_soc_ops neo1973_hifi_ops = { |
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.hw_params = neo1973_hifi_hw_params, |
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.hw_free = neo1973_hifi_hw_free, |
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}; |
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static int neo1973_voice_hw_params(struct snd_pcm_substream *substream, |
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struct snd_pcm_hw_params *params) |
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{ |
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struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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unsigned int pcmdiv = 0; |
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int ret = 0; |
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unsigned long iis_clkrate; |
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iis_clkrate = s3c24xx_i2s_get_clockrate(); |
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if (params_rate(params) != 8000) |
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return -EINVAL; |
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if (params_channels(params) != 1) |
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return -EINVAL; |
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pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */ |
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/* set the codec system clock for DAC and ADC */ |
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ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000, |
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SND_SOC_CLOCK_IN); |
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if (ret < 0) |
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return ret; |
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/* set codec PCM division for sample rate */ |
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ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv); |
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if (ret < 0) |
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return ret; |
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/* configure and enable PLL for 12.288MHz output */ |
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ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, |
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iis_clkrate / 4, 12288000); |
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if (ret < 0) |
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return ret; |
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return 0; |
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} |
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static int neo1973_voice_hw_free(struct snd_pcm_substream *substream) |
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{ |
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struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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/* disable the PLL */ |
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return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0); |
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} |
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static struct snd_soc_ops neo1973_voice_ops = { |
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.hw_params = neo1973_voice_hw_params, |
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.hw_free = neo1973_voice_hw_free, |
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}; |
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static struct gpio_desc *gpiod_hp_in, *gpiod_amp_shut; |
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static int gta02_speaker_enabled; |
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static int lm4853_set_spk(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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gta02_speaker_enabled = ucontrol->value.integer.value[0]; |
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gpiod_set_value(gpiod_hp_in, !gta02_speaker_enabled); |
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return 0; |
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} |
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static int lm4853_get_spk(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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ucontrol->value.integer.value[0] = gta02_speaker_enabled; |
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return 0; |
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} |
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static int lm4853_event(struct snd_soc_dapm_widget *w, |
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struct snd_kcontrol *k, int event) |
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{ |
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gpiod_set_value(gpiod_amp_shut, SND_SOC_DAPM_EVENT_OFF(event)); |
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return 0; |
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} |
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static const struct snd_soc_dapm_widget neo1973_wm8753_dapm_widgets[] = { |
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SND_SOC_DAPM_LINE("GSM Line Out", NULL), |
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SND_SOC_DAPM_LINE("GSM Line In", NULL), |
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SND_SOC_DAPM_MIC("Headset Mic", NULL), |
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SND_SOC_DAPM_MIC("Handset Mic", NULL), |
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SND_SOC_DAPM_SPK("Handset Spk", NULL), |
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SND_SOC_DAPM_SPK("Stereo Out", lm4853_event), |
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}; |
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static const struct snd_soc_dapm_route neo1973_wm8753_routes[] = { |
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/* Connections to the GSM Module */ |
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{"GSM Line Out", NULL, "MONO1"}, |
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{"GSM Line Out", NULL, "MONO2"}, |
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{"RXP", NULL, "GSM Line In"}, |
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{"RXN", NULL, "GSM Line In"}, |
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/* Connections to Headset */ |
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{"MIC1", NULL, "Mic Bias"}, |
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{"Mic Bias", NULL, "Headset Mic"}, |
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/* Call Mic */ |
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{"MIC2", NULL, "Mic Bias"}, |
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{"MIC2N", NULL, "Mic Bias"}, |
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{"Mic Bias", NULL, "Handset Mic"}, |
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/* Connect the ALC pins */ |
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{"ACIN", NULL, "ACOP"}, |
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/* Connections to the amp */ |
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{"Stereo Out", NULL, "LOUT1"}, |
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{"Stereo Out", NULL, "ROUT1"}, |
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/* Call Speaker */ |
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{"Handset Spk", NULL, "LOUT2"}, |
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{"Handset Spk", NULL, "ROUT2"}, |
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}; |
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static const struct snd_kcontrol_new neo1973_wm8753_controls[] = { |
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SOC_DAPM_PIN_SWITCH("GSM Line Out"), |
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SOC_DAPM_PIN_SWITCH("GSM Line In"), |
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SOC_DAPM_PIN_SWITCH("Headset Mic"), |
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SOC_DAPM_PIN_SWITCH("Handset Mic"), |
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SOC_DAPM_PIN_SWITCH("Handset Spk"), |
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SOC_DAPM_PIN_SWITCH("Stereo Out"), |
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SOC_SINGLE_BOOL_EXT("Amp Spk Switch", 0, |
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lm4853_get_spk, |
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lm4853_set_spk), |
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}; |
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static int neo1973_wm8753_init(struct snd_soc_pcm_runtime *rtd) |
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{ |
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struct snd_soc_card *card = rtd->card; |
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/* set endpoints to default off mode */ |
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snd_soc_dapm_disable_pin(&card->dapm, "GSM Line Out"); |
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snd_soc_dapm_disable_pin(&card->dapm, "GSM Line In"); |
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snd_soc_dapm_disable_pin(&card->dapm, "Headset Mic"); |
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snd_soc_dapm_disable_pin(&card->dapm, "Handset Mic"); |
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snd_soc_dapm_disable_pin(&card->dapm, "Stereo Out"); |
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snd_soc_dapm_disable_pin(&card->dapm, "Handset Spk"); |
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/* allow audio paths from the GSM modem to run during suspend */ |
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snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line Out"); |
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snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line In"); |
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snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic"); |
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snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Mic"); |
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snd_soc_dapm_ignore_suspend(&card->dapm, "Stereo Out"); |
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snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Spk"); |
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return 0; |
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} |
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SND_SOC_DAILINK_DEFS(wm8753, |
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DAILINK_COMP_ARRAY(COMP_CPU("s3c24xx-iis")), |
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DAILINK_COMP_ARRAY(COMP_CODEC("wm8753.0-001a", "wm8753-hifi")), |
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DAILINK_COMP_ARRAY(COMP_PLATFORM("s3c24xx-iis"))); |
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SND_SOC_DAILINK_DEFS(bluetooth, |
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DAILINK_COMP_ARRAY(COMP_CPU("bt-sco-pcm")), |
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DAILINK_COMP_ARRAY(COMP_CODEC("wm8753.0-001a", "wm8753-voice"))); |
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static struct snd_soc_dai_link neo1973_dai[] = { |
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{ /* Hifi Playback - for similatious use with voice below */ |
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.name = "WM8753", |
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.stream_name = "WM8753 HiFi", |
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
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SND_SOC_DAIFMT_CBM_CFM, |
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.init = neo1973_wm8753_init, |
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.ops = &neo1973_hifi_ops, |
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SND_SOC_DAILINK_REG(wm8753), |
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}, |
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{ /* Voice via BT */ |
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.name = "Bluetooth", |
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.stream_name = "Voice", |
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.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF | |
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SND_SOC_DAIFMT_CBS_CFS, |
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.ops = &neo1973_voice_ops, |
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SND_SOC_DAILINK_REG(bluetooth), |
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}, |
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}; |
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static struct snd_soc_aux_dev neo1973_aux_devs[] = { |
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{ |
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.dlc = COMP_AUX("dfbmcs320.0"), |
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}, |
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}; |
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static struct snd_soc_codec_conf neo1973_codec_conf[] = { |
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{ |
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.dlc = COMP_CODEC_CONF("lm4857.0-007c"), |
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.name_prefix = "Amp", |
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}, |
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}; |
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static struct snd_soc_card neo1973 = { |
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.name = "neo1973gta02", |
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.owner = THIS_MODULE, |
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.dai_link = neo1973_dai, |
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.num_links = ARRAY_SIZE(neo1973_dai), |
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.aux_dev = neo1973_aux_devs, |
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.num_aux_devs = ARRAY_SIZE(neo1973_aux_devs), |
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.codec_conf = neo1973_codec_conf, |
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.num_configs = ARRAY_SIZE(neo1973_codec_conf), |
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.controls = neo1973_wm8753_controls, |
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.num_controls = ARRAY_SIZE(neo1973_wm8753_controls), |
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.dapm_widgets = neo1973_wm8753_dapm_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(neo1973_wm8753_dapm_widgets), |
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.dapm_routes = neo1973_wm8753_routes, |
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.num_dapm_routes = ARRAY_SIZE(neo1973_wm8753_routes), |
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.fully_routed = true, |
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}; |
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static int neo1973_probe(struct platform_device *pdev) |
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{ |
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struct device *dev = &pdev->dev; |
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gpiod_hp_in = devm_gpiod_get(dev, "hp", GPIOD_OUT_HIGH); |
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if (IS_ERR(gpiod_hp_in)) { |
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dev_err(dev, "missing gpio %s\n", "hp"); |
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return PTR_ERR(gpiod_hp_in); |
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} |
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gpiod_amp_shut = devm_gpiod_get(dev, "amp-shut", GPIOD_OUT_HIGH); |
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if (IS_ERR(gpiod_amp_shut)) { |
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dev_err(dev, "missing gpio %s\n", "amp-shut"); |
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return PTR_ERR(gpiod_amp_shut); |
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} |
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neo1973.dev = dev; |
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return devm_snd_soc_register_card(dev, &neo1973); |
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} |
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struct platform_driver neo1973_audio = { |
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.driver = { |
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.name = "neo1973-audio", |
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.pm = &snd_soc_pm_ops, |
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}, |
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.probe = neo1973_probe, |
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}; |
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module_platform_driver(neo1973_audio); |
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/* Module information */ |
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MODULE_AUTHOR("Graeme Gregory, [email protected], www.openmoko.org"); |
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MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 and Frerunner"); |
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MODULE_LICENSE("GPL"); |
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MODULE_ALIAS("platform:neo1973-audio");
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