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218 lines
5.6 KiB
218 lines
5.6 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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// |
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// Copyright (c) 2014, Insignal Co., Ltd. |
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// |
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// Author: Claude <[email protected]> |
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#include <linux/module.h> |
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#include <linux/of_device.h> |
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#include <linux/platform_device.h> |
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#include <linux/clk.h> |
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#include <sound/soc.h> |
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#include <sound/soc-dapm.h> |
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#include <sound/pcm.h> |
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#include <sound/pcm_params.h> |
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#include "../codecs/wm8994.h" |
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#include "i2s.h" |
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static int arndale_rt5631_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 *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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int rfs, ret; |
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unsigned long rclk; |
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rfs = 256; |
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rclk = params_rate(params) * rfs; |
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ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK, |
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0, SND_SOC_CLOCK_OUT); |
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if (ret < 0) |
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return ret; |
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ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0, |
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0, SND_SOC_CLOCK_OUT); |
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if (ret < 0) |
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return ret; |
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ret = snd_soc_dai_set_sysclk(codec_dai, 0, rclk, SND_SOC_CLOCK_OUT); |
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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 const struct snd_soc_ops arndale_rt5631_ops = { |
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.hw_params = arndale_rt5631_hw_params, |
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}; |
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static int arndale_wm1811_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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unsigned int rfs, rclk; |
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/* Ensure AIF1CLK is >= 3 MHz for optimal performance */ |
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if (params_width(params) == 24) |
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rfs = 384; |
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else if (params_rate(params) == 8000 || params_rate(params) == 11025) |
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rfs = 512; |
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else |
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rfs = 256; |
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rclk = params_rate(params) * rfs; |
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/* |
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* We add 1 to the frequency value to ensure proper EPLL setting |
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* for each audio sampling rate (see epll_24mhz_tbl in drivers/clk/ |
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* samsung/clk-exynos5250.c for list of available EPLL rates). |
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* The CODEC uses clk API and the value will be rounded hence the MCLK1 |
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* clock's frequency will still be exact multiple of the sample rate. |
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*/ |
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return snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1, |
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rclk + 1, SND_SOC_CLOCK_IN); |
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} |
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static const struct snd_soc_ops arndale_wm1811_ops = { |
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.hw_params = arndale_wm1811_hw_params, |
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}; |
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SND_SOC_DAILINK_DEFS(rt5631_hifi, |
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DAILINK_COMP_ARRAY(COMP_EMPTY()), |
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DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "rt5631-aif1")), |
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DAILINK_COMP_ARRAY(COMP_EMPTY())); |
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static struct snd_soc_dai_link arndale_rt5631_dai[] = { |
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{ |
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.name = "RT5631 HiFi", |
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.stream_name = "Primary", |
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.dai_fmt = SND_SOC_DAIFMT_I2S |
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| SND_SOC_DAIFMT_NB_NF |
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| SND_SOC_DAIFMT_CBS_CFS, |
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.ops = &arndale_rt5631_ops, |
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SND_SOC_DAILINK_REG(rt5631_hifi), |
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}, |
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}; |
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SND_SOC_DAILINK_DEFS(wm1811_hifi, |
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DAILINK_COMP_ARRAY(COMP_EMPTY()), |
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DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif1")), |
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DAILINK_COMP_ARRAY(COMP_EMPTY())); |
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static struct snd_soc_dai_link arndale_wm1811_dai[] = { |
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{ |
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.name = "WM1811 HiFi", |
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.stream_name = "Primary", |
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.dai_fmt = SND_SOC_DAIFMT_I2S |
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| SND_SOC_DAIFMT_NB_NF |
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| SND_SOC_DAIFMT_CBM_CFM, |
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.ops = &arndale_wm1811_ops, |
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SND_SOC_DAILINK_REG(wm1811_hifi), |
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}, |
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}; |
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static struct snd_soc_card arndale_rt5631 = { |
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.name = "Arndale RT5631", |
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.owner = THIS_MODULE, |
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.dai_link = arndale_rt5631_dai, |
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.num_links = ARRAY_SIZE(arndale_rt5631_dai), |
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}; |
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static struct snd_soc_card arndale_wm1811 = { |
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.name = "Arndale WM1811", |
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.owner = THIS_MODULE, |
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.dai_link = arndale_wm1811_dai, |
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.num_links = ARRAY_SIZE(arndale_wm1811_dai), |
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}; |
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static void arndale_put_of_nodes(struct snd_soc_card *card) |
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{ |
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struct snd_soc_dai_link *dai_link; |
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int i; |
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for_each_card_prelinks(card, i, dai_link) { |
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of_node_put(dai_link->cpus->of_node); |
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of_node_put(dai_link->codecs->of_node); |
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} |
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} |
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static int arndale_audio_probe(struct platform_device *pdev) |
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{ |
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struct device_node *np = pdev->dev.of_node; |
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struct snd_soc_card *card; |
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struct snd_soc_dai_link *dai_link; |
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int ret; |
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card = (struct snd_soc_card *)of_device_get_match_data(&pdev->dev); |
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card->dev = &pdev->dev; |
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dai_link = card->dai_link; |
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dai_link->cpus->of_node = of_parse_phandle(np, "samsung,audio-cpu", 0); |
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if (!dai_link->cpus->of_node) { |
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dev_err(&pdev->dev, |
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"Property 'samsung,audio-cpu' missing or invalid\n"); |
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return -EINVAL; |
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} |
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if (!dai_link->platforms->name) |
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dai_link->platforms->of_node = dai_link->cpus->of_node; |
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dai_link->codecs->of_node = of_parse_phandle(np, "samsung,audio-codec", 0); |
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if (!dai_link->codecs->of_node) { |
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dev_err(&pdev->dev, |
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"Property 'samsung,audio-codec' missing or invalid\n"); |
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ret = -EINVAL; |
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goto err_put_of_nodes; |
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} |
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ret = devm_snd_soc_register_card(card->dev, card); |
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if (ret) { |
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dev_err_probe(&pdev->dev, ret, |
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"snd_soc_register_card() failed\n"); |
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goto err_put_of_nodes; |
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} |
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return 0; |
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err_put_of_nodes: |
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arndale_put_of_nodes(card); |
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return ret; |
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} |
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static int arndale_audio_remove(struct platform_device *pdev) |
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{ |
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struct snd_soc_card *card = platform_get_drvdata(pdev); |
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arndale_put_of_nodes(card); |
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return 0; |
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} |
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static const struct of_device_id arndale_audio_of_match[] = { |
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{ .compatible = "samsung,arndale-rt5631", .data = &arndale_rt5631 }, |
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{ .compatible = "samsung,arndale-alc5631", .data = &arndale_rt5631 }, |
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{ .compatible = "samsung,arndale-wm1811", .data = &arndale_wm1811 }, |
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{}, |
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}; |
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MODULE_DEVICE_TABLE(of, arndale_audio_of_match); |
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static struct platform_driver arndale_audio_driver = { |
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.driver = { |
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.name = "arndale-audio", |
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.pm = &snd_soc_pm_ops, |
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.of_match_table = arndale_audio_of_match, |
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}, |
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.probe = arndale_audio_probe, |
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.remove = arndale_audio_remove, |
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}; |
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module_platform_driver(arndale_audio_driver); |
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MODULE_AUTHOR("Claude <[email protected]>"); |
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MODULE_DESCRIPTION("ALSA SoC Driver for Arndale Board"); |
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MODULE_LICENSE("GPL");
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