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251 lines
5.7 KiB
251 lines
5.7 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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// |
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// Tobermory audio support |
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// |
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// Copyright 2011 Wolfson Microelectronics |
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#include <sound/soc.h> |
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#include <sound/soc-dapm.h> |
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#include <sound/jack.h> |
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#include <linux/gpio.h> |
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#include <linux/module.h> |
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#include "../codecs/wm8962.h" |
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static int sample_rate = 44100; |
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static int tobermory_set_bias_level(struct snd_soc_card *card, |
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struct snd_soc_dapm_context *dapm, |
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enum snd_soc_bias_level level) |
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{ |
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struct snd_soc_pcm_runtime *rtd; |
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struct snd_soc_dai *codec_dai; |
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int ret; |
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rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]); |
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codec_dai = asoc_rtd_to_codec(rtd, 0); |
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if (dapm->dev != codec_dai->dev) |
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return 0; |
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switch (level) { |
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case SND_SOC_BIAS_PREPARE: |
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if (dapm->bias_level == SND_SOC_BIAS_STANDBY) { |
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ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, |
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WM8962_FLL_MCLK, 32768, |
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sample_rate * 512); |
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if (ret < 0) |
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pr_err("Failed to start FLL: %d\n", ret); |
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ret = snd_soc_dai_set_sysclk(codec_dai, |
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WM8962_SYSCLK_FLL, |
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sample_rate * 512, |
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SND_SOC_CLOCK_IN); |
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if (ret < 0) { |
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pr_err("Failed to set SYSCLK: %d\n", ret); |
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snd_soc_dai_set_pll(codec_dai, WM8962_FLL, |
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0, 0, 0); |
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return ret; |
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} |
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} |
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break; |
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default: |
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break; |
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} |
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return 0; |
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} |
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static int tobermory_set_bias_level_post(struct snd_soc_card *card, |
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struct snd_soc_dapm_context *dapm, |
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enum snd_soc_bias_level level) |
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{ |
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struct snd_soc_pcm_runtime *rtd; |
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struct snd_soc_dai *codec_dai; |
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int ret; |
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rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]); |
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codec_dai = asoc_rtd_to_codec(rtd, 0); |
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if (dapm->dev != codec_dai->dev) |
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return 0; |
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switch (level) { |
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case SND_SOC_BIAS_STANDBY: |
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ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, |
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32768, SND_SOC_CLOCK_IN); |
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if (ret < 0) { |
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pr_err("Failed to switch away from FLL: %d\n", ret); |
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return ret; |
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} |
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ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, |
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0, 0, 0); |
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if (ret < 0) { |
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pr_err("Failed to stop FLL: %d\n", ret); |
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return ret; |
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} |
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break; |
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default: |
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break; |
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} |
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dapm->bias_level = level; |
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return 0; |
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} |
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static int tobermory_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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sample_rate = params_rate(params); |
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return 0; |
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} |
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static const struct snd_soc_ops tobermory_ops = { |
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.hw_params = tobermory_hw_params, |
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}; |
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SND_SOC_DAILINK_DEFS(cpu, |
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DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")), |
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DAILINK_COMP_ARRAY(COMP_CODEC("wm8962.1-001a", "wm8962")), |
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DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0"))); |
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static struct snd_soc_dai_link tobermory_dai[] = { |
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{ |
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.name = "CPU", |
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.stream_name = "CPU", |
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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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.ops = &tobermory_ops, |
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SND_SOC_DAILINK_REG(cpu), |
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}, |
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}; |
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static const struct snd_kcontrol_new controls[] = { |
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SOC_DAPM_PIN_SWITCH("Main Speaker"), |
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SOC_DAPM_PIN_SWITCH("DMIC"), |
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}; |
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static const struct snd_soc_dapm_widget widgets[] = { |
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SND_SOC_DAPM_HP("Headphone", NULL), |
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SND_SOC_DAPM_MIC("Headset Mic", NULL), |
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SND_SOC_DAPM_MIC("DMIC", NULL), |
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SND_SOC_DAPM_MIC("AMIC", NULL), |
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SND_SOC_DAPM_SPK("Main Speaker", NULL), |
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}; |
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static const struct snd_soc_dapm_route audio_paths[] = { |
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{ "Headphone", NULL, "HPOUTL" }, |
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{ "Headphone", NULL, "HPOUTR" }, |
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{ "Main Speaker", NULL, "SPKOUTL" }, |
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{ "Main Speaker", NULL, "SPKOUTR" }, |
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{ "Headset Mic", NULL, "MICBIAS" }, |
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{ "IN4L", NULL, "Headset Mic" }, |
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{ "IN4R", NULL, "Headset Mic" }, |
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{ "AMIC", NULL, "MICBIAS" }, |
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{ "IN1L", NULL, "AMIC" }, |
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{ "IN1R", NULL, "AMIC" }, |
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{ "DMIC", NULL, "MICBIAS" }, |
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{ "DMICDAT", NULL, "DMIC" }, |
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}; |
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static struct snd_soc_jack tobermory_headset; |
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/* Headset jack detection DAPM pins */ |
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static struct snd_soc_jack_pin tobermory_headset_pins[] = { |
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{ |
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.pin = "Headset Mic", |
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.mask = SND_JACK_MICROPHONE, |
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}, |
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{ |
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.pin = "Headphone", |
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.mask = SND_JACK_MICROPHONE, |
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}, |
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}; |
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static int tobermory_late_probe(struct snd_soc_card *card) |
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{ |
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struct snd_soc_pcm_runtime *rtd; |
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struct snd_soc_component *component; |
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struct snd_soc_dai *codec_dai; |
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int ret; |
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rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]); |
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component = asoc_rtd_to_codec(rtd, 0)->component; |
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codec_dai = asoc_rtd_to_codec(rtd, 0); |
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ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, |
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32768, SND_SOC_CLOCK_IN); |
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if (ret < 0) |
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return ret; |
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ret = snd_soc_card_jack_new_pins(card, "Headset", SND_JACK_HEADSET | |
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SND_JACK_BTN_0, &tobermory_headset, |
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tobermory_headset_pins, |
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ARRAY_SIZE(tobermory_headset_pins)); |
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if (ret) |
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return ret; |
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wm8962_mic_detect(component, &tobermory_headset); |
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return 0; |
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} |
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static struct snd_soc_card tobermory = { |
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.name = "Tobermory", |
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.owner = THIS_MODULE, |
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.dai_link = tobermory_dai, |
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.num_links = ARRAY_SIZE(tobermory_dai), |
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.set_bias_level = tobermory_set_bias_level, |
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.set_bias_level_post = tobermory_set_bias_level_post, |
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.controls = controls, |
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.num_controls = ARRAY_SIZE(controls), |
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.dapm_widgets = widgets, |
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.num_dapm_widgets = ARRAY_SIZE(widgets), |
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.dapm_routes = audio_paths, |
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.num_dapm_routes = ARRAY_SIZE(audio_paths), |
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.fully_routed = true, |
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.late_probe = tobermory_late_probe, |
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}; |
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static int tobermory_probe(struct platform_device *pdev) |
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{ |
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struct snd_soc_card *card = &tobermory; |
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int ret; |
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card->dev = &pdev->dev; |
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ret = devm_snd_soc_register_card(&pdev->dev, card); |
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if (ret) |
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dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n"); |
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return ret; |
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} |
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static struct platform_driver tobermory_driver = { |
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.driver = { |
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.name = "tobermory", |
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.pm = &snd_soc_pm_ops, |
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}, |
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.probe = tobermory_probe, |
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}; |
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module_platform_driver(tobermory_driver); |
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MODULE_DESCRIPTION("Tobermory audio support"); |
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MODULE_AUTHOR("Mark Brown <[email protected]>"); |
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MODULE_LICENSE("GPL"); |
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MODULE_ALIAS("platform:tobermory");
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