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176 lines
4.0 KiB
176 lines
4.0 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* osk5912.c -- SoC audio for OSK 5912 |
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* |
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* Copyright (C) 2008 Mistral Solutions |
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* |
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* Contact: Arun KS <[email protected]> |
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*/ |
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#include <linux/clk.h> |
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#include <linux/platform_device.h> |
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#include <sound/core.h> |
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#include <sound/pcm.h> |
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#include <sound/soc.h> |
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#include <asm/mach-types.h> |
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#include <linux/gpio.h> |
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#include <linux/module.h> |
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#include <linux/platform_data/asoc-ti-mcbsp.h> |
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#include "omap-mcbsp.h" |
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#include "../codecs/tlv320aic23.h" |
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#define CODEC_CLOCK 12000000 |
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static struct clk *tlv320aic23_mclk; |
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static int osk_startup(struct snd_pcm_substream *substream) |
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{ |
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return clk_prepare_enable(tlv320aic23_mclk); |
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} |
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static void osk_shutdown(struct snd_pcm_substream *substream) |
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{ |
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clk_disable_unprepare(tlv320aic23_mclk); |
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} |
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static int osk_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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int err; |
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/* Set the codec system clock for DAC and ADC */ |
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err = |
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snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, SND_SOC_CLOCK_IN); |
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if (err < 0) { |
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printk(KERN_ERR "can't set codec system clock\n"); |
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return err; |
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} |
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return err; |
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} |
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static const struct snd_soc_ops osk_ops = { |
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.startup = osk_startup, |
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.hw_params = osk_hw_params, |
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.shutdown = osk_shutdown, |
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}; |
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static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = { |
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SND_SOC_DAPM_HP("Headphone Jack", NULL), |
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SND_SOC_DAPM_LINE("Line In", NULL), |
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SND_SOC_DAPM_MIC("Mic Jack", NULL), |
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}; |
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static const struct snd_soc_dapm_route audio_map[] = { |
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{"Headphone Jack", NULL, "LHPOUT"}, |
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{"Headphone Jack", NULL, "RHPOUT"}, |
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{"LLINEIN", NULL, "Line In"}, |
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{"RLINEIN", NULL, "Line In"}, |
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{"MICIN", NULL, "Mic Jack"}, |
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}; |
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/* Digital audio interface glue - connects codec <--> CPU */ |
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SND_SOC_DAILINK_DEFS(aic23, |
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DAILINK_COMP_ARRAY(COMP_CPU("omap-mcbsp.1")), |
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DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic23-codec", |
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"tlv320aic23-hifi")), |
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DAILINK_COMP_ARRAY(COMP_PLATFORM("omap-mcbsp.1"))); |
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static struct snd_soc_dai_link osk_dai = { |
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.name = "TLV320AIC23", |
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.stream_name = "AIC23", |
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.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF | |
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SND_SOC_DAIFMT_CBM_CFM, |
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.ops = &osk_ops, |
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SND_SOC_DAILINK_REG(aic23), |
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}; |
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/* Audio machine driver */ |
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static struct snd_soc_card snd_soc_card_osk = { |
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.name = "OSK5912", |
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.owner = THIS_MODULE, |
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.dai_link = &osk_dai, |
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.num_links = 1, |
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.dapm_widgets = tlv320aic23_dapm_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets), |
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.dapm_routes = audio_map, |
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.num_dapm_routes = ARRAY_SIZE(audio_map), |
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}; |
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static struct platform_device *osk_snd_device; |
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static int __init osk_soc_init(void) |
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{ |
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int err; |
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u32 curRate; |
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struct device *dev; |
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if (!(machine_is_omap_osk())) |
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return -ENODEV; |
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osk_snd_device = platform_device_alloc("soc-audio", -1); |
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if (!osk_snd_device) |
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return -ENOMEM; |
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platform_set_drvdata(osk_snd_device, &snd_soc_card_osk); |
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err = platform_device_add(osk_snd_device); |
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if (err) |
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goto err1; |
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dev = &osk_snd_device->dev; |
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tlv320aic23_mclk = clk_get(dev, "mclk"); |
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if (IS_ERR(tlv320aic23_mclk)) { |
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printk(KERN_ERR "Could not get mclk clock\n"); |
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err = PTR_ERR(tlv320aic23_mclk); |
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goto err2; |
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} |
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/* |
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* Configure 12 MHz output on MCLK. |
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*/ |
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curRate = (uint) clk_get_rate(tlv320aic23_mclk); |
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if (curRate != CODEC_CLOCK) { |
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if (clk_set_rate(tlv320aic23_mclk, CODEC_CLOCK)) { |
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printk(KERN_ERR "Cannot set MCLK for AIC23 CODEC\n"); |
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err = -ECANCELED; |
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goto err3; |
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} |
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} |
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printk(KERN_INFO "MCLK = %d [%d]\n", |
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(uint) clk_get_rate(tlv320aic23_mclk), CODEC_CLOCK); |
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return 0; |
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err3: |
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clk_put(tlv320aic23_mclk); |
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err2: |
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platform_device_del(osk_snd_device); |
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err1: |
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platform_device_put(osk_snd_device); |
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return err; |
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} |
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static void __exit osk_soc_exit(void) |
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{ |
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clk_put(tlv320aic23_mclk); |
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platform_device_unregister(osk_snd_device); |
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} |
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module_init(osk_soc_init); |
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module_exit(osk_soc_exit); |
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MODULE_AUTHOR("Arun KS <[email protected]>"); |
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MODULE_DESCRIPTION("ALSA SoC OSK 5912"); |
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MODULE_LICENSE("GPL");
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