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70b2ac126a
The platform device for the card is tied closely to the soc-audio implementation which we're currently trying to remove in favour of allowing cards to have their own devices. Begin removing it by replacing it with the card in the suspend and resume callbacks we give to cards, also taking the opportunity to remove the legacy suspend types which are currently hard coded anyway. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
292 lines
6.8 KiB
C
292 lines
6.8 KiB
C
/*
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* zylonite.c -- SoC audio for Zylonite
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*
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* Copyright 2008 Wolfson Microelectronics PLC.
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* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/device.h>
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#include <linux/clk.h>
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#include <linux/i2c.h>
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#include <sound/core.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 "../codecs/wm9713.h"
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#include "pxa2xx-ac97.h"
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#include "pxa-ssp.h"
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/*
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* There is a physical switch SW15 on the board which changes the MCLK
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* for the WM9713 between the standard AC97 master clock and the
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* output of the CLK_POUT signal from the PXA.
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*/
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static int clk_pout;
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module_param(clk_pout, int, 0);
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MODULE_PARM_DESC(clk_pout, "Use CLK_POUT as WM9713 MCLK (SW15 on board).");
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static struct clk *pout;
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static struct snd_soc_card zylonite;
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static const struct snd_soc_dapm_widget zylonite_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphone", NULL),
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SND_SOC_DAPM_MIC("Headset Microphone", NULL),
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SND_SOC_DAPM_MIC("Handset Microphone", NULL),
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SND_SOC_DAPM_SPK("Multiactor", NULL),
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SND_SOC_DAPM_SPK("Headset Earpiece", NULL),
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};
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/* Currently supported audio map */
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static const struct snd_soc_dapm_route audio_map[] = {
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/* Headphone output connected to HPL/HPR */
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{ "Headphone", NULL, "HPL" },
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{ "Headphone", NULL, "HPR" },
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/* On-board earpiece */
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{ "Headset Earpiece", NULL, "OUT3" },
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/* Headphone mic */
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{ "MIC2A", NULL, "Mic Bias" },
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{ "Mic Bias", NULL, "Headset Microphone" },
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/* On-board mic */
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{ "MIC1", NULL, "Mic Bias" },
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{ "Mic Bias", NULL, "Handset Microphone" },
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/* Multiactor differentially connected over SPKL/SPKR */
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{ "Multiactor", NULL, "SPKL" },
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{ "Multiactor", NULL, "SPKR" },
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};
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static int zylonite_wm9713_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct snd_soc_codec *codec = rtd->codec;
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struct snd_soc_dapm_context *dapm = &codec->dapm;
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if (clk_pout)
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snd_soc_dai_set_pll(rtd->codec_dai, 0, 0,
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clk_get_rate(pout), 0);
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snd_soc_dapm_new_controls(dapm, zylonite_dapm_widgets,
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ARRAY_SIZE(zylonite_dapm_widgets));
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snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
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/* Static setup for now */
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snd_soc_dapm_enable_pin(dapm, "Headphone");
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snd_soc_dapm_enable_pin(dapm, "Headset Earpiece");
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snd_soc_dapm_sync(dapm);
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return 0;
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}
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static int zylonite_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 = substream->private_data;
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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unsigned int pll_out = 0;
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unsigned int wm9713_div = 0;
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int ret = 0;
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int rate = params_rate(params);
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int width = snd_pcm_format_physical_width(params_format(params));
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/* Only support ratios that we can generate neatly from the AC97
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* based master clock - in particular, this excludes 44.1kHz.
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* In most applications the voice DAC will be used for telephony
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* data so multiples of 8kHz will be the common case.
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*/
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switch (rate) {
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case 8000:
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wm9713_div = 12;
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break;
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case 16000:
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wm9713_div = 6;
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break;
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case 48000:
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wm9713_div = 2;
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break;
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default:
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/* Don't support OSS emulation */
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return -EINVAL;
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}
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/* Add 1 to the width for the leading clock cycle */
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pll_out = rate * (width + 1) * 8;
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ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0, 1);
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if (ret < 0)
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return ret;
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ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, pll_out);
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if (ret < 0)
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return ret;
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if (clk_pout)
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ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_PLL_DIV,
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WM9713_PCMDIV(wm9713_div));
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else
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ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_DIV,
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WM9713_PCMDIV(wm9713_div));
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if (ret < 0)
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return ret;
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ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
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if (ret < 0)
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return ret;
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ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
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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 struct snd_soc_ops zylonite_voice_ops = {
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.hw_params = zylonite_voice_hw_params,
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};
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static struct snd_soc_dai_link zylonite_dai[] = {
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{
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.name = "AC97",
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.stream_name = "AC97 HiFi",
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.codec_name = "wm9713-codec",
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.platform_name = "pxa-pcm-audio",
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.cpu_dai_name = "pxa-ac97.0",
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.codec_name = "wm9713-hifi",
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.init = zylonite_wm9713_init,
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},
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{
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.name = "AC97 Aux",
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.stream_name = "AC97 Aux",
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.codec_name = "wm9713-codec",
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.platform_name = "pxa-pcm-audio",
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.cpu_dai_name = "pxa-ac97.1",
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.codec_name = "wm9713-aux",
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},
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{
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.name = "WM9713 Voice",
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.stream_name = "WM9713 Voice",
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.codec_name = "wm9713-codec",
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.platform_name = "pxa-pcm-audio",
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.cpu_dai_name = "pxa-ssp-dai.2",
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.codec_name = "wm9713-voice",
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.ops = &zylonite_voice_ops,
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},
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};
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static int zylonite_probe(struct platform_device *pdev)
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{
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int ret;
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if (clk_pout) {
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pout = clk_get(NULL, "CLK_POUT");
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if (IS_ERR(pout)) {
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dev_err(&pdev->dev, "Unable to obtain CLK_POUT: %ld\n",
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PTR_ERR(pout));
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return PTR_ERR(pout);
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}
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ret = clk_enable(pout);
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if (ret != 0) {
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dev_err(&pdev->dev, "Unable to enable CLK_POUT: %d\n",
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ret);
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clk_put(pout);
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return ret;
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}
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dev_dbg(&pdev->dev, "MCLK enabled at %luHz\n",
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clk_get_rate(pout));
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}
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return 0;
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}
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static int zylonite_remove(struct platform_device *pdev)
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{
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if (clk_pout) {
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clk_disable(pout);
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clk_put(pout);
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}
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return 0;
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}
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static int zylonite_suspend_post(struct snd_soc_card *card)
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{
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if (clk_pout)
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clk_disable(pout);
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return 0;
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}
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static int zylonite_resume_pre(struct snd_soc_card *card)
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{
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int ret = 0;
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if (clk_pout) {
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ret = clk_enable(pout);
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if (ret != 0)
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dev_err(&pdev->dev, "Unable to enable CLK_POUT: %d\n",
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ret);
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}
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return ret;
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}
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static struct snd_soc_card zylonite = {
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.name = "Zylonite",
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.probe = &zylonite_probe,
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.remove = &zylonite_remove,
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.suspend_post = &zylonite_suspend_post,
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.resume_pre = &zylonite_resume_pre,
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.dai_link = zylonite_dai,
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.num_links = ARRAY_SIZE(zylonite_dai),
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.owner = THIS_MODULE,
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};
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static struct platform_device *zylonite_snd_ac97_device;
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static int __init zylonite_init(void)
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{
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int ret;
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zylonite_snd_ac97_device = platform_device_alloc("soc-audio", -1);
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if (!zylonite_snd_ac97_device)
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return -ENOMEM;
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platform_set_drvdata(zylonite_snd_ac97_device, &zylonite);
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ret = platform_device_add(zylonite_snd_ac97_device);
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if (ret != 0)
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platform_device_put(zylonite_snd_ac97_device);
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return ret;
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}
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static void __exit zylonite_exit(void)
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{
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platform_device_unregister(zylonite_snd_ac97_device);
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}
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module_init(zylonite_init);
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module_exit(zylonite_exit);
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MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
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MODULE_DESCRIPTION("ALSA SoC WM9713 Zylonite");
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MODULE_LICENSE("GPL");
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