ASoC: Wolfson Microelectronics 1133-EV1 audio support (eeec1246) · Commits · 戴 / test

sound/soc/imx/Kconfig

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		@@ -11,3 +11,11 @@ config SND_IMX_SOC
		config SND_MXC_SOC_SSI
		tristate

		config SND_MXC_SOC_WM1133_EV1
		tristate "Audio on the the i.MX31ADS with WM1133-EV1 fitted"
		depends on SND_IMX_SOC && EXPERIMENTAL
		select SND_SOC_WM8350
		select SND_MXC_SOC_SSI
		help
		Enable support for audio on the i.MX31ADS with the WM1133-EV1
		PMIC board with WM8835x fitted.

sound/soc/imx/Makefile

+3 −0

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		@@ -9,4 +9,7 @@ obj-$(CONFIG_SND_IMX_SOC) += snd-soc-imx.o

		# i.MX Machine Support
		snd-soc-phycore-ac97-objs := phycore-ac97.o
		snd-soc-wm1133-ev1-objs := wm1133-ev1.o

		obj-$(CONFIG_SND_SOC_PHYCORE_AC97) += snd-soc-phycore-ac97.o
		obj-$(CONFIG_SND_MXC_SOC_WM1133_EV1) += snd-soc-wm1133-ev1.o

sound/soc/imx/wm1133-ev1.c

0 → 100644

+291 −0

Original line number	Diff line number	Diff line
		/*
		* wm1133-ev1.c - Audio for WM1133-EV1 on i.MX31ADS
		*
		* Copyright (c) 2010 Wolfson Microelectronics plc
		* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
		*
		* Based on an earlier driver for the same hardware by Liam Girdwood.
		*
		* This program is free software; you can redistribute it and/or modify it
		* under the terms of the GNU General Public License as published by the
		* Free Software Foundation; either version 2 of the License, or (at your
		* option) any later version.
		*/

		#include <linux/platform_device.h>
		#include <linux/clk.h>
		#include <sound/core.h>
		#include <sound/jack.h>
		#include <sound/pcm.h>
		#include <sound/pcm_params.h>
		#include <sound/soc.h>
		#include <sound/soc-dapm.h>

		#include <mach/audmux.h>

		#include "imx-ssi.h"
		#include "../codecs/wm8350.h"

		/* There is a silicon mic on the board optionally connected via a solder pad
		* SP1. Define this to enable it.
		*/
		#undef USE_SIMIC

		struct _wm8350_audio {
		unsigned int channels;
		snd_pcm_format_t format;
		unsigned int rate;
		unsigned int sysclk;
		unsigned int bclkdiv;
		unsigned int clkdiv;
		unsigned int lr_rate;
		};

		/* in order of power consumption per rate (lowest first) */
		static const struct _wm8350_audio wm8350_audio[] = {
		/* 16bit mono modes */
		{1, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000 >> 1,
		WM8350_BCLK_DIV_48, WM8350_DACDIV_3, 16,},

		/* 16 bit stereo modes */
		{2, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000,
		WM8350_BCLK_DIV_48, WM8350_DACDIV_6, 32,},
		{2, SNDRV_PCM_FORMAT_S16_LE, 16000, 12288000,
		WM8350_BCLK_DIV_24, WM8350_DACDIV_3, 32,},
		{2, SNDRV_PCM_FORMAT_S16_LE, 32000, 12288000,
		WM8350_BCLK_DIV_12, WM8350_DACDIV_1_5, 32,},
		{2, SNDRV_PCM_FORMAT_S16_LE, 48000, 12288000,
		WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
		{2, SNDRV_PCM_FORMAT_S16_LE, 96000, 24576000,
		WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
		{2, SNDRV_PCM_FORMAT_S16_LE, 11025, 11289600,
		WM8350_BCLK_DIV_32, WM8350_DACDIV_4, 32,},
		{2, SNDRV_PCM_FORMAT_S16_LE, 22050, 11289600,
		WM8350_BCLK_DIV_16, WM8350_DACDIV_2, 32,},
		{2, SNDRV_PCM_FORMAT_S16_LE, 44100, 11289600,
		WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
		{2, SNDRV_PCM_FORMAT_S16_LE, 88200, 22579200,
		WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},

		/* 24bit stereo modes */
		{2, SNDRV_PCM_FORMAT_S24_LE, 48000, 12288000,
		WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
		{2, SNDRV_PCM_FORMAT_S24_LE, 96000, 24576000,
		WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
		{2, SNDRV_PCM_FORMAT_S24_LE, 44100, 11289600,
		WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
		{2, SNDRV_PCM_FORMAT_S24_LE, 88200, 22579200,
		WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
		};

		static int wm1133_ev1_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->dai->codec_dai;
		struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
		int i, found = 0;
		snd_pcm_format_t format = params_format(params);
		unsigned int rate = params_rate(params);
		unsigned int channels = params_channels(params);
		u32 dai_format;

		/* find the correct audio parameters */
		for (i = 0; i < ARRAY_SIZE(wm8350_audio); i++) {
		if (rate == wm8350_audio[i].rate &&
		format == wm8350_audio[i].format &&
		channels == wm8350_audio[i].channels) {
		found = 1;
		break;
		}
		}
		if (!found)
		return -EINVAL;

		/* codec FLL input is 14.75 MHz from MCLK */
		snd_soc_dai_set_pll(codec_dai, 0, 0, 14750000, wm8350_audio[i].sysclk);

		dai_format = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
		SND_SOC_DAIFMT_CBM_CFM;

		/* set codec DAI configuration */
		snd_soc_dai_set_fmt(codec_dai, dai_format);

		/* set cpu DAI configuration */
		snd_soc_dai_set_fmt(cpu_dai, dai_format);

		/* TODO: The SSI driver should figure this out for us */
		switch (channels) {
		case 2:
		snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffc, 0xffffffc, 2, 0);
		break;
		case 1:
		snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffe, 0xffffffe, 1, 0);
		break;
		default:
		return -EINVAL;
		}

		/* set MCLK as the codec system clock for DAC and ADC */
		snd_soc_dai_set_sysclk(codec_dai, WM8350_MCLK_SEL_PLL_MCLK,
		wm8350_audio[i].sysclk, SND_SOC_CLOCK_IN);

		/* set codec BCLK division for sample rate */
		snd_soc_dai_set_clkdiv(codec_dai, WM8350_BCLK_CLKDIV,
		wm8350_audio[i].bclkdiv);

		/* DAI is synchronous and clocked with DAC LRCLK & ADC LRC */
		snd_soc_dai_set_clkdiv(codec_dai,
		WM8350_DACLR_CLKDIV, wm8350_audio[i].lr_rate);
		snd_soc_dai_set_clkdiv(codec_dai,
		WM8350_ADCLR_CLKDIV, wm8350_audio[i].lr_rate);

		/* now configure DAC and ADC clocks */
		snd_soc_dai_set_clkdiv(codec_dai,
		WM8350_DAC_CLKDIV, wm8350_audio[i].clkdiv);

		snd_soc_dai_set_clkdiv(codec_dai,
		WM8350_ADC_CLKDIV, wm8350_audio[i].clkdiv);

		return 0;
		}

		static struct snd_soc_ops wm1133_ev1_ops = {
		.hw_params = wm1133_ev1_hw_params,
		};

		static const struct snd_soc_dapm_widget wm1133_ev1_widgets[] = {
		#ifdef USE_SIMIC
		SND_SOC_DAPM_MIC("SiMIC", NULL),
		#endif
		SND_SOC_DAPM_MIC("Mic1 Jack", NULL),
		SND_SOC_DAPM_MIC("Mic2 Jack", NULL),
		SND_SOC_DAPM_LINE("Line In Jack", NULL),
		SND_SOC_DAPM_LINE("Line Out Jack", NULL),
		SND_SOC_DAPM_HP("Headphone Jack", NULL),
		};

		/* imx32ads soc_card audio map */
		static const struct snd_soc_dapm_route wm1133_ev1_map[] = {

		#ifdef USE_SIMIC
		/* SiMIC --> IN1LN (with automatic bias) via SP1 */
		{ "IN1LN", NULL, "Mic Bias" },
		{ "Mic Bias", NULL, "SiMIC" },
		#endif

		/* Mic 1 Jack --> IN1LN and IN1LP (with automatic bias) */
		{ "IN1LN", NULL, "Mic Bias" },
		{ "IN1LP", NULL, "Mic1 Jack" },
		{ "Mic Bias", NULL, "Mic1 Jack" },

		/* Mic 2 Jack --> IN1RN and IN1RP (with automatic bias) */
		{ "IN1RN", NULL, "Mic Bias" },
		{ "IN1RP", NULL, "Mic1 Jack" },
		{ "Mic Bias", NULL, "Mic1 Jack" },

		/* Line in Jack --> AUX (L+R) */
		{ "IN3R", NULL, "Line In Jack" },
		{ "IN3L", NULL, "Line In Jack" },

		/* Out1 --> Headphone Jack */
		{ "Headphone Jack", NULL, "OUT1R" },
		{ "Headphone Jack", NULL, "OUT1L" },

		/* Out1 --> Line Out Jack */
		{ "Line Out Jack", NULL, "OUT2R" },
		{ "Line Out Jack", NULL, "OUT2L" },
		};

		static struct snd_soc_jack hp_jack;

		static struct snd_soc_jack_pin hp_jack_pins[] = {
		{ .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE },
		};

		static int wm1133_ev1_init(struct snd_soc_codec *codec)
		{
		struct snd_soc_card *card = codec->socdev->card;

		snd_soc_dapm_new_controls(codec, wm1133_ev1_widgets,
		ARRAY_SIZE(wm1133_ev1_widgets));

		snd_soc_dapm_add_routes(codec, wm1133_ev1_map,
		ARRAY_SIZE(wm1133_ev1_map));

		/* Headphone jack detection */
		snd_soc_jack_new(card, "Headphone", SND_JACK_HEADPHONE, &hp_jack);
		snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
		hp_jack_pins);
		wm8350_hp_jack_detect(codec, WM8350_JDR, &hp_jack, SND_JACK_HEADPHONE);

		return 0;
		}


		static struct snd_soc_dai_link wm1133_ev1_dai = {
		.name = "WM1133-EV1",
		.stream_name = "Audio",
		.cpu_dai = &imx_ssi_pcm_dai[0],
		.codec_dai = &wm8350_dai,
		.init = wm1133_ev1_init,
		.ops = &wm1133_ev1_ops,
		.symmetric_rates = 1,
		};

		static struct snd_soc_card wm1133_ev1 = {
		.name = "WM1133-EV1",
		.platform = &imx_soc_platform,
		.dai_link = &wm1133_ev1_dai,
		.num_links = 1,
		};

		static struct snd_soc_device wm1133_ev1_snd_devdata = {
		.card = &wm1133_ev1,
		.codec_dev = &soc_codec_dev_wm8350,
		};

		static struct platform_device *wm1133_ev1_snd_device;

		static int __init wm1133_ev1_audio_init(void)
		{
		int ret;
		unsigned int ptcr, pdcr;

		/* SSI0 mastered by port 5 */
		ptcr = MXC_AUDMUX_V2_PTCR_SYN \|
		MXC_AUDMUX_V2_PTCR_TFSDIR \|
		MXC_AUDMUX_V2_PTCR_TFSEL(MX31_AUDMUX_PORT5_SSI_PINS_5) \|
		MXC_AUDMUX_V2_PTCR_TCLKDIR \|
		MXC_AUDMUX_V2_PTCR_TCSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
		pdcr = MXC_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
		mxc_audmux_v2_configure_port(MX31_AUDMUX_PORT1_SSI0, ptcr, pdcr);

		ptcr = MXC_AUDMUX_V2_PTCR_SYN;
		pdcr = MXC_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT1_SSI0);
		mxc_audmux_v2_configure_port(MX31_AUDMUX_PORT5_SSI_PINS_5, ptcr, pdcr);

		wm1133_ev1_snd_device = platform_device_alloc("soc-audio", -1);
		if (!wm1133_ev1_snd_device)
		return -ENOMEM;

		platform_set_drvdata(wm1133_ev1_snd_device, &wm1133_ev1_snd_devdata);
		wm1133_ev1_snd_devdata.dev = &wm1133_ev1_snd_device->dev;
		ret = platform_device_add(wm1133_ev1_snd_device);

		if (ret)
		platform_device_put(wm1133_ev1_snd_device);

		return ret;
		}
		module_init(wm1133_ev1_audio_init);

		static void __exit wm1133_ev1_audio_exit(void)
		{
		platform_device_unregister(wm1133_ev1_snd_device);
		}
		module_exit(wm1133_ev1_audio_exit);

		MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
		MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS");
		MODULE_LICENSE("GPL");

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