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289 lines
8.6 KiB
289 lines
8.6 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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// |
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// wm1133-ev1.c - Audio for WM1133-EV1 on i.MX31ADS |
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// |
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// Copyright (c) 2010 Wolfson Microelectronics plc |
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// Author: Mark Brown <[email protected]> |
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// |
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// Based on an earlier driver for the same hardware by Liam Girdwood. |
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#include <linux/platform_device.h> |
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#include <linux/clk.h> |
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#include <linux/module.h> |
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#include <sound/core.h> |
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#include <sound/jack.h> |
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#include <sound/pcm.h> |
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#include <sound/pcm_params.h> |
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#include <sound/soc.h> |
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#include "imx-ssi.h" |
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#include "../codecs/wm8350.h" |
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#include "imx-audmux.h" |
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/* There is a silicon mic on the board optionally connected via a solder pad |
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* SP1. Define this to enable it. |
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*/ |
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#undef USE_SIMIC |
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struct _wm8350_audio { |
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unsigned int channels; |
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snd_pcm_format_t format; |
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unsigned int rate; |
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unsigned int sysclk; |
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unsigned int bclkdiv; |
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unsigned int clkdiv; |
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unsigned int lr_rate; |
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}; |
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/* in order of power consumption per rate (lowest first) */ |
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static const struct _wm8350_audio wm8350_audio[] = { |
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/* 16bit mono modes */ |
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{1, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000 >> 1, |
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WM8350_BCLK_DIV_48, WM8350_DACDIV_3, 16,}, |
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/* 16 bit stereo modes */ |
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{2, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000, |
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WM8350_BCLK_DIV_48, WM8350_DACDIV_6, 32,}, |
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{2, SNDRV_PCM_FORMAT_S16_LE, 16000, 12288000, |
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WM8350_BCLK_DIV_24, WM8350_DACDIV_3, 32,}, |
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{2, SNDRV_PCM_FORMAT_S16_LE, 32000, 12288000, |
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WM8350_BCLK_DIV_12, WM8350_DACDIV_1_5, 32,}, |
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{2, SNDRV_PCM_FORMAT_S16_LE, 48000, 12288000, |
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WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,}, |
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{2, SNDRV_PCM_FORMAT_S16_LE, 96000, 24576000, |
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WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,}, |
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{2, SNDRV_PCM_FORMAT_S16_LE, 11025, 11289600, |
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WM8350_BCLK_DIV_32, WM8350_DACDIV_4, 32,}, |
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{2, SNDRV_PCM_FORMAT_S16_LE, 22050, 11289600, |
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WM8350_BCLK_DIV_16, WM8350_DACDIV_2, 32,}, |
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{2, SNDRV_PCM_FORMAT_S16_LE, 44100, 11289600, |
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WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,}, |
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{2, SNDRV_PCM_FORMAT_S16_LE, 88200, 22579200, |
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WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,}, |
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/* 24bit stereo modes */ |
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{2, SNDRV_PCM_FORMAT_S24_LE, 48000, 12288000, |
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WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,}, |
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{2, SNDRV_PCM_FORMAT_S24_LE, 96000, 24576000, |
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WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,}, |
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{2, SNDRV_PCM_FORMAT_S24_LE, 44100, 11289600, |
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WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,}, |
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{2, SNDRV_PCM_FORMAT_S24_LE, 88200, 22579200, |
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WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,}, |
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}; |
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static int wm1133_ev1_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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int i, found = 0; |
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snd_pcm_format_t format = params_format(params); |
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unsigned int rate = params_rate(params); |
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unsigned int channels = params_channels(params); |
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/* find the correct audio parameters */ |
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for (i = 0; i < ARRAY_SIZE(wm8350_audio); i++) { |
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if (rate == wm8350_audio[i].rate && |
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format == wm8350_audio[i].format && |
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channels == wm8350_audio[i].channels) { |
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found = 1; |
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break; |
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} |
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} |
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if (!found) |
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return -EINVAL; |
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/* codec FLL input is 14.75 MHz from MCLK */ |
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snd_soc_dai_set_pll(codec_dai, 0, 0, 14750000, wm8350_audio[i].sysclk); |
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/* TODO: The SSI driver should figure this out for us */ |
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switch (channels) { |
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case 2: |
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snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0); |
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break; |
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case 1: |
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snd_soc_dai_set_tdm_slot(cpu_dai, 0x1, 0x1, 1, 0); |
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break; |
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default: |
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return -EINVAL; |
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} |
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/* set MCLK as the codec system clock for DAC and ADC */ |
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snd_soc_dai_set_sysclk(codec_dai, WM8350_MCLK_SEL_PLL_MCLK, |
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wm8350_audio[i].sysclk, SND_SOC_CLOCK_IN); |
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/* set codec BCLK division for sample rate */ |
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snd_soc_dai_set_clkdiv(codec_dai, WM8350_BCLK_CLKDIV, |
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wm8350_audio[i].bclkdiv); |
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/* DAI is synchronous and clocked with DAC LRCLK & ADC LRC */ |
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snd_soc_dai_set_clkdiv(codec_dai, |
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WM8350_DACLR_CLKDIV, wm8350_audio[i].lr_rate); |
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snd_soc_dai_set_clkdiv(codec_dai, |
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WM8350_ADCLR_CLKDIV, wm8350_audio[i].lr_rate); |
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/* now configure DAC and ADC clocks */ |
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snd_soc_dai_set_clkdiv(codec_dai, |
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WM8350_DAC_CLKDIV, wm8350_audio[i].clkdiv); |
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snd_soc_dai_set_clkdiv(codec_dai, |
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WM8350_ADC_CLKDIV, wm8350_audio[i].clkdiv); |
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return 0; |
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} |
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static const struct snd_soc_ops wm1133_ev1_ops = { |
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.hw_params = wm1133_ev1_hw_params, |
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}; |
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static const struct snd_soc_dapm_widget wm1133_ev1_widgets[] = { |
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#ifdef USE_SIMIC |
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SND_SOC_DAPM_MIC("SiMIC", NULL), |
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#endif |
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SND_SOC_DAPM_MIC("Mic1 Jack", NULL), |
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SND_SOC_DAPM_MIC("Mic2 Jack", NULL), |
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SND_SOC_DAPM_LINE("Line In Jack", NULL), |
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SND_SOC_DAPM_LINE("Line Out Jack", NULL), |
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SND_SOC_DAPM_HP("Headphone Jack", NULL), |
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}; |
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/* imx32ads soc_card audio map */ |
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static const struct snd_soc_dapm_route wm1133_ev1_map[] = { |
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#ifdef USE_SIMIC |
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/* SiMIC --> IN1LN (with automatic bias) via SP1 */ |
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{ "IN1LN", NULL, "Mic Bias" }, |
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{ "Mic Bias", NULL, "SiMIC" }, |
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#endif |
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/* Mic 1 Jack --> IN1LN and IN1LP (with automatic bias) */ |
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{ "IN1LN", NULL, "Mic Bias" }, |
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{ "IN1LP", NULL, "Mic1 Jack" }, |
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{ "Mic Bias", NULL, "Mic1 Jack" }, |
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/* Mic 2 Jack --> IN1RN and IN1RP (with automatic bias) */ |
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{ "IN1RN", NULL, "Mic Bias" }, |
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{ "IN1RP", NULL, "Mic2 Jack" }, |
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{ "Mic Bias", NULL, "Mic2 Jack" }, |
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/* Line in Jack --> AUX (L+R) */ |
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{ "IN3R", NULL, "Line In Jack" }, |
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{ "IN3L", NULL, "Line In Jack" }, |
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/* Out1 --> Headphone Jack */ |
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{ "Headphone Jack", NULL, "OUT1R" }, |
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{ "Headphone Jack", NULL, "OUT1L" }, |
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/* Out1 --> Line Out Jack */ |
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{ "Line Out Jack", NULL, "OUT2R" }, |
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{ "Line Out Jack", NULL, "OUT2L" }, |
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}; |
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static struct snd_soc_jack hp_jack; |
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static struct snd_soc_jack_pin hp_jack_pins[] = { |
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{ .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE }, |
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}; |
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static struct snd_soc_jack mic_jack; |
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static struct snd_soc_jack_pin mic_jack_pins[] = { |
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{ .pin = "Mic1 Jack", .mask = SND_JACK_MICROPHONE }, |
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{ .pin = "Mic2 Jack", .mask = SND_JACK_MICROPHONE }, |
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}; |
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static int wm1133_ev1_init(struct snd_soc_pcm_runtime *rtd) |
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{ |
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struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component; |
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/* Headphone jack detection */ |
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snd_soc_card_jack_new(rtd->card, "Headphone", SND_JACK_HEADPHONE, |
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&hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins)); |
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wm8350_hp_jack_detect(component, WM8350_JDR, &hp_jack, SND_JACK_HEADPHONE); |
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/* Microphone jack detection */ |
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snd_soc_card_jack_new(rtd->card, "Microphone", |
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SND_JACK_MICROPHONE | SND_JACK_BTN_0, &mic_jack, |
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mic_jack_pins, ARRAY_SIZE(mic_jack_pins)); |
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wm8350_mic_jack_detect(component, &mic_jack, SND_JACK_MICROPHONE, |
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SND_JACK_BTN_0); |
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snd_soc_dapm_force_enable_pin(&rtd->card->dapm, "Mic Bias"); |
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return 0; |
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} |
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SND_SOC_DAILINK_DEFS(ev1, |
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DAILINK_COMP_ARRAY(COMP_CPU("imx-ssi.0")), |
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DAILINK_COMP_ARRAY(COMP_CODEC("wm8350-codec.0-0x1a", "wm8350-hifi")), |
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DAILINK_COMP_ARRAY(COMP_PLATFORM("imx-ssi.0"))); |
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static struct snd_soc_dai_link wm1133_ev1_dai = { |
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.name = "WM1133-EV1", |
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.stream_name = "Audio", |
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.init = wm1133_ev1_init, |
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.ops = &wm1133_ev1_ops, |
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.symmetric_rates = 1, |
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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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SND_SOC_DAILINK_REG(ev1), |
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}; |
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static struct snd_soc_card wm1133_ev1 = { |
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.name = "WM1133-EV1", |
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.owner = THIS_MODULE, |
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.dai_link = &wm1133_ev1_dai, |
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.num_links = 1, |
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.dapm_widgets = wm1133_ev1_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(wm1133_ev1_widgets), |
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.dapm_routes = wm1133_ev1_map, |
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.num_dapm_routes = ARRAY_SIZE(wm1133_ev1_map), |
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}; |
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static struct platform_device *wm1133_ev1_snd_device; |
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static int __init wm1133_ev1_audio_init(void) |
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{ |
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int ret; |
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unsigned int ptcr, pdcr; |
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/* SSI0 mastered by port 5 */ |
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ptcr = IMX_AUDMUX_V2_PTCR_SYN | |
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IMX_AUDMUX_V2_PTCR_TFSDIR | |
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IMX_AUDMUX_V2_PTCR_TFSEL(MX31_AUDMUX_PORT5_SSI_PINS_5) | |
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IMX_AUDMUX_V2_PTCR_TCLKDIR | |
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IMX_AUDMUX_V2_PTCR_TCSEL(MX31_AUDMUX_PORT5_SSI_PINS_5); |
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pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT5_SSI_PINS_5); |
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imx_audmux_v2_configure_port(MX31_AUDMUX_PORT1_SSI0, ptcr, pdcr); |
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ptcr = IMX_AUDMUX_V2_PTCR_SYN; |
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pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT1_SSI0); |
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imx_audmux_v2_configure_port(MX31_AUDMUX_PORT5_SSI_PINS_5, ptcr, pdcr); |
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wm1133_ev1_snd_device = platform_device_alloc("soc-audio", -1); |
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if (!wm1133_ev1_snd_device) |
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return -ENOMEM; |
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platform_set_drvdata(wm1133_ev1_snd_device, &wm1133_ev1); |
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ret = platform_device_add(wm1133_ev1_snd_device); |
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if (ret) |
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platform_device_put(wm1133_ev1_snd_device); |
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return ret; |
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} |
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module_init(wm1133_ev1_audio_init); |
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static void __exit wm1133_ev1_audio_exit(void) |
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{ |
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platform_device_unregister(wm1133_ev1_snd_device); |
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} |
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module_exit(wm1133_ev1_audio_exit); |
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MODULE_AUTHOR("Mark Brown <[email protected]>"); |
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MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS"); |
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MODULE_LICENSE("GPL");
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