Krishna Mohan Dani | d683d0b | 2014-11-26 14:53:04 +0530 | [diff] [blame] | 1 | /* |
| 2 | * arndale_rt5631.c |
| 3 | * |
| 4 | * Copyright (c) 2014, Insignal Co., Ltd. |
| 5 | * |
| 6 | * Author: Claude <claude@insginal.co.kr> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the |
| 10 | * Free Software Foundation; either version 2 of the License, or (at your |
| 11 | * option) any later version. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/platform_device.h> |
| 16 | #include <linux/clk.h> |
| 17 | |
| 18 | #include <sound/soc.h> |
| 19 | #include <sound/soc-dapm.h> |
| 20 | #include <sound/pcm.h> |
| 21 | #include <sound/pcm_params.h> |
| 22 | |
| 23 | #include "i2s.h" |
| 24 | |
| 25 | static int arndale_hw_params(struct snd_pcm_substream *substream, |
| 26 | struct snd_pcm_hw_params *params) |
| 27 | { |
| 28 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 29 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 30 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 31 | int rfs, ret; |
| 32 | unsigned long rclk; |
| 33 | |
| 34 | rfs = 256; |
| 35 | |
| 36 | rclk = params_rate(params) * rfs; |
| 37 | |
| 38 | ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK, |
| 39 | 0, SND_SOC_CLOCK_OUT); |
| 40 | if (ret < 0) |
| 41 | return ret; |
| 42 | |
| 43 | ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0, |
| 44 | 0, SND_SOC_CLOCK_OUT); |
| 45 | |
| 46 | if (ret < 0) |
| 47 | return ret; |
| 48 | |
| 49 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, rclk, SND_SOC_CLOCK_OUT); |
| 50 | if (ret < 0) |
| 51 | return ret; |
| 52 | |
| 53 | return 0; |
| 54 | } |
| 55 | |
| 56 | static struct snd_soc_ops arndale_ops = { |
| 57 | .hw_params = arndale_hw_params, |
| 58 | }; |
| 59 | |
| 60 | static struct snd_soc_dai_link arndale_rt5631_dai[] = { |
| 61 | { |
| 62 | .name = "RT5631 HiFi", |
| 63 | .stream_name = "Primary", |
| 64 | .codec_dai_name = "rt5631-hifi", |
| 65 | .dai_fmt = SND_SOC_DAIFMT_I2S |
| 66 | | SND_SOC_DAIFMT_NB_NF |
| 67 | | SND_SOC_DAIFMT_CBS_CFS, |
| 68 | .ops = &arndale_ops, |
| 69 | }, |
| 70 | }; |
| 71 | |
| 72 | static struct snd_soc_card arndale_rt5631 = { |
| 73 | .name = "Arndale RT5631", |
| 74 | .dai_link = arndale_rt5631_dai, |
| 75 | .num_links = ARRAY_SIZE(arndale_rt5631_dai), |
| 76 | }; |
| 77 | |
| 78 | static int arndale_audio_probe(struct platform_device *pdev) |
| 79 | { |
| 80 | int n, ret; |
| 81 | struct device_node *np = pdev->dev.of_node; |
| 82 | struct snd_soc_card *card = &arndale_rt5631; |
| 83 | |
| 84 | card->dev = &pdev->dev; |
| 85 | |
| 86 | for (n = 0; np && n < ARRAY_SIZE(arndale_rt5631_dai); n++) { |
| 87 | if (!arndale_rt5631_dai[n].cpu_dai_name) { |
| 88 | arndale_rt5631_dai[n].cpu_of_node = of_parse_phandle(np, |
| 89 | "samsung,audio-cpu", n); |
| 90 | |
| 91 | if (!arndale_rt5631_dai[n].cpu_of_node) { |
| 92 | dev_err(&pdev->dev, |
| 93 | "Property 'samsung,audio-cpu' missing or invalid\n"); |
| 94 | return -EINVAL; |
| 95 | } |
| 96 | } |
| 97 | if (!arndale_rt5631_dai[n].platform_name) |
| 98 | arndale_rt5631_dai[n].platform_of_node = |
| 99 | arndale_rt5631_dai[n].cpu_of_node; |
| 100 | |
| 101 | arndale_rt5631_dai[n].codec_name = NULL; |
| 102 | arndale_rt5631_dai[n].codec_of_node = of_parse_phandle(np, |
| 103 | "samsung,audio-codec", n); |
| 104 | if (!arndale_rt5631_dai[0].codec_of_node) { |
| 105 | dev_err(&pdev->dev, |
| 106 | "Property 'samsung,audio-codec' missing or invalid\n"); |
| 107 | return -EINVAL; |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | ret = devm_snd_soc_register_card(card->dev, card); |
| 112 | |
| 113 | if (ret) |
| 114 | dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret); |
| 115 | |
| 116 | return ret; |
| 117 | } |
| 118 | |
| 119 | static int arndale_audio_remove(struct platform_device *pdev) |
| 120 | { |
| 121 | struct snd_soc_card *card = platform_get_drvdata(pdev); |
| 122 | |
| 123 | snd_soc_unregister_card(card); |
| 124 | |
| 125 | return 0; |
| 126 | } |
| 127 | |
| 128 | static const struct of_device_id samsung_arndale_rt5631_of_match[] __maybe_unused = { |
| 129 | { .compatible = "samsung,arndale-rt5631", }, |
| 130 | { .compatible = "samsung,arndale-alc5631", }, |
| 131 | {}, |
| 132 | }; |
| 133 | MODULE_DEVICE_TABLE(of, samsung_arndale_rt5631_of_match); |
| 134 | |
| 135 | static struct platform_driver arndale_audio_driver = { |
| 136 | .driver = { |
| 137 | .name = "arndale-audio", |
Krishna Mohan Dani | d683d0b | 2014-11-26 14:53:04 +0530 | [diff] [blame] | 138 | .pm = &snd_soc_pm_ops, |
| 139 | .of_match_table = of_match_ptr(samsung_arndale_rt5631_of_match), |
| 140 | }, |
| 141 | .probe = arndale_audio_probe, |
| 142 | .remove = arndale_audio_remove, |
| 143 | }; |
| 144 | |
| 145 | module_platform_driver(arndale_audio_driver); |
| 146 | |
| 147 | MODULE_AUTHOR("Claude <claude@insignal.co.kr>"); |
| 148 | MODULE_DESCRIPTION("ALSA SoC Driver for Arndale Board"); |
| 149 | MODULE_LICENSE("GPL"); |