Sangbeom Kim | b8eeee6 | 2011-04-09 10:57:59 +0900 | [diff] [blame] | 1 | /* |
| 2 | * sound/soc/samsung/smdk_wm8580pcm.c |
| 3 | * |
| 4 | * Copyright (c) 2011 Samsung Electronics Co. Ltd |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the |
| 8 | * Free Software Foundation; either version 2 of the License, or (at your |
| 9 | * option) any later version. |
| 10 | */ |
Paul Gortmaker | da155d5 | 2011-07-15 12:38:28 -0400 | [diff] [blame] | 11 | #include <linux/module.h> |
Sangbeom Kim | b8eeee6 | 2011-04-09 10:57:59 +0900 | [diff] [blame] | 12 | #include <sound/soc.h> |
| 13 | #include <sound/pcm_params.h> |
| 14 | #include <sound/pcm.h> |
| 15 | |
| 16 | #include <asm/mach-types.h> |
| 17 | |
| 18 | #include "../codecs/wm8580.h" |
Sangbeom Kim | b8eeee6 | 2011-04-09 10:57:59 +0900 | [diff] [blame] | 19 | #include "pcm.h" |
| 20 | |
| 21 | /* |
| 22 | * Board Settings: |
| 23 | * o '1' means 'ON' |
| 24 | * o '0' means 'OFF' |
| 25 | * o 'X' means 'Don't care' |
| 26 | * |
Kukjin Kim | 3a549fb | 2014-07-03 07:40:17 +0900 | [diff] [blame] | 27 | * SMDK6410 Base B/D: CFG1-0000, CFG2-1111 |
Sangbeom Kim | b8eeee6 | 2011-04-09 10:57:59 +0900 | [diff] [blame] | 28 | * SMDKC110, SMDKV210: CFGB11-100100, CFGB12-0000 |
| 29 | */ |
| 30 | |
| 31 | #define SMDK_WM8580_EXT_OSC 12000000 |
| 32 | #define SMDK_WM8580_EXT_MCLK 4096000 |
| 33 | #define SMDK_WM8580_EXT_VOICE 2048000 |
| 34 | |
| 35 | static unsigned long mclk_freq; |
| 36 | static unsigned long xtal_freq; |
| 37 | |
| 38 | /* |
| 39 | * If MCLK clock directly gets from XTAL, we don't have to use PLL |
| 40 | * to make MCLK, but if XTAL clock source connects with other codec |
| 41 | * pin (like XTI), we should have to set codec's PLL to make MCLK. |
| 42 | * Because Samsung SoC does not support pcmcdclk output like I2S. |
| 43 | */ |
| 44 | |
| 45 | static int smdk_wm8580_pcm_hw_params(struct snd_pcm_substream *substream, |
| 46 | struct snd_pcm_hw_params *params) |
| 47 | { |
| 48 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 49 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 50 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 51 | int rfs, ret; |
| 52 | |
| 53 | switch (params_rate(params)) { |
| 54 | case 8000: |
| 55 | break; |
| 56 | default: |
| 57 | printk(KERN_ERR "%s:%d Sampling Rate %u not supported!\n", |
| 58 | __func__, __LINE__, params_rate(params)); |
| 59 | return -EINVAL; |
| 60 | } |
| 61 | |
| 62 | rfs = mclk_freq / params_rate(params) / 2; |
| 63 | |
Sangbeom Kim | b8eeee6 | 2011-04-09 10:57:59 +0900 | [diff] [blame] | 64 | if (mclk_freq == xtal_freq) { |
| 65 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_MCLK, |
| 66 | mclk_freq, SND_SOC_CLOCK_IN); |
| 67 | if (ret < 0) |
| 68 | return ret; |
| 69 | |
| 70 | ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK, |
| 71 | WM8580_CLKSRC_MCLK); |
| 72 | if (ret < 0) |
| 73 | return ret; |
| 74 | } else { |
| 75 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA, |
| 76 | mclk_freq, SND_SOC_CLOCK_IN); |
| 77 | if (ret < 0) |
| 78 | return ret; |
| 79 | |
| 80 | ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK, |
| 81 | WM8580_CLKSRC_PLLA); |
| 82 | if (ret < 0) |
| 83 | return ret; |
| 84 | |
| 85 | ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0, |
| 86 | xtal_freq, mclk_freq); |
| 87 | if (ret < 0) |
| 88 | return ret; |
| 89 | } |
| 90 | |
| 91 | /* Set PCM source clock on CPU */ |
| 92 | ret = snd_soc_dai_set_sysclk(cpu_dai, S3C_PCM_CLKSRC_MUX, |
| 93 | mclk_freq, SND_SOC_CLOCK_IN); |
| 94 | if (ret < 0) |
| 95 | return ret; |
| 96 | |
| 97 | /* Set SCLK_DIV for making bclk */ |
| 98 | ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_PCM_SCLK_PER_FS, rfs); |
| 99 | if (ret < 0) |
| 100 | return ret; |
| 101 | |
| 102 | return 0; |
| 103 | } |
| 104 | |
| 105 | static struct snd_soc_ops smdk_wm8580_pcm_ops = { |
| 106 | .hw_params = smdk_wm8580_pcm_hw_params, |
| 107 | }; |
| 108 | |
Lars-Peter Clausen | 6a5794f | 2015-01-01 17:16:28 +0100 | [diff] [blame] | 109 | #define SMDK_DAI_FMT (SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF | \ |
| 110 | SND_SOC_DAIFMT_CBS_CFS) |
| 111 | |
Sangbeom Kim | b8eeee6 | 2011-04-09 10:57:59 +0900 | [diff] [blame] | 112 | static struct snd_soc_dai_link smdk_dai[] = { |
| 113 | { |
| 114 | .name = "WM8580 PAIF PCM RX", |
| 115 | .stream_name = "Playback", |
| 116 | .cpu_dai_name = "samsung-pcm.0", |
| 117 | .codec_dai_name = "wm8580-hifi-playback", |
| 118 | .platform_name = "samsung-audio", |
Mark Brown | 5d5d09b | 2011-08-03 17:34:41 +0900 | [diff] [blame] | 119 | .codec_name = "wm8580.0-001b", |
Lars-Peter Clausen | 6a5794f | 2015-01-01 17:16:28 +0100 | [diff] [blame] | 120 | .dai_fmt = SMDK_DAI_FMT, |
Sangbeom Kim | b8eeee6 | 2011-04-09 10:57:59 +0900 | [diff] [blame] | 121 | .ops = &smdk_wm8580_pcm_ops, |
| 122 | }, { |
| 123 | .name = "WM8580 PAIF PCM TX", |
| 124 | .stream_name = "Capture", |
| 125 | .cpu_dai_name = "samsung-pcm.0", |
| 126 | .codec_dai_name = "wm8580-hifi-capture", |
Padmavathi Venna | a08485d | 2012-12-07 13:59:21 +0530 | [diff] [blame] | 127 | .platform_name = "samsung-pcm.0", |
Mark Brown | 5d5d09b | 2011-08-03 17:34:41 +0900 | [diff] [blame] | 128 | .codec_name = "wm8580.0-001b", |
Lars-Peter Clausen | 6a5794f | 2015-01-01 17:16:28 +0100 | [diff] [blame] | 129 | .dai_fmt = SMDK_DAI_FMT, |
Sangbeom Kim | b8eeee6 | 2011-04-09 10:57:59 +0900 | [diff] [blame] | 130 | .ops = &smdk_wm8580_pcm_ops, |
| 131 | }, |
| 132 | }; |
| 133 | |
| 134 | static struct snd_soc_card smdk_pcm = { |
| 135 | .name = "SMDK-PCM", |
Axel Lin | 095d79d | 2011-12-22 10:53:15 +0800 | [diff] [blame] | 136 | .owner = THIS_MODULE, |
Sangbeom Kim | b8eeee6 | 2011-04-09 10:57:59 +0900 | [diff] [blame] | 137 | .dai_link = smdk_dai, |
| 138 | .num_links = 2, |
| 139 | }; |
| 140 | |
| 141 | /* |
| 142 | * After SMDKC110 Base Board's Rev is '0.1', 12MHz External OSC(X1) |
| 143 | * is absent (or not connected), so we connect EXT_VOICE_CLK(OSC4), |
| 144 | * 2.0484Mhz, directly with MCLK both Codec and SoC. |
| 145 | */ |
Bill Pemberton | fdca21a | 2012-12-07 09:26:15 -0500 | [diff] [blame] | 146 | static int snd_smdk_probe(struct platform_device *pdev) |
Sangbeom Kim | b8eeee6 | 2011-04-09 10:57:59 +0900 | [diff] [blame] | 147 | { |
| 148 | int ret = 0; |
| 149 | |
| 150 | xtal_freq = SMDK_WM8580_EXT_OSC; |
| 151 | mclk_freq = SMDK_WM8580_EXT_MCLK; |
| 152 | |
| 153 | if (machine_is_smdkc110() || machine_is_smdkv210()) |
| 154 | xtal_freq = mclk_freq = SMDK_WM8580_EXT_VOICE; |
| 155 | |
| 156 | smdk_pcm.dev = &pdev->dev; |
Tushar Behera | c583883 | 2014-05-21 08:52:17 +0530 | [diff] [blame] | 157 | ret = devm_snd_soc_register_card(&pdev->dev, &smdk_pcm); |
| 158 | if (ret) |
Sangbeom Kim | b8eeee6 | 2011-04-09 10:57:59 +0900 | [diff] [blame] | 159 | dev_err(&pdev->dev, "snd_soc_register_card failed %d\n", ret); |
Sangbeom Kim | b8eeee6 | 2011-04-09 10:57:59 +0900 | [diff] [blame] | 160 | |
Tushar Behera | c583883 | 2014-05-21 08:52:17 +0530 | [diff] [blame] | 161 | return ret; |
Sangbeom Kim | b8eeee6 | 2011-04-09 10:57:59 +0900 | [diff] [blame] | 162 | } |
| 163 | |
| 164 | static struct platform_driver snd_smdk_driver = { |
| 165 | .driver = { |
Sangbeom Kim | b8eeee6 | 2011-04-09 10:57:59 +0900 | [diff] [blame] | 166 | .name = "samsung-smdk-pcm", |
| 167 | }, |
| 168 | .probe = snd_smdk_probe, |
Sangbeom Kim | b8eeee6 | 2011-04-09 10:57:59 +0900 | [diff] [blame] | 169 | }; |
| 170 | |
Mark Brown | e00c3f5 | 2011-11-23 15:20:13 +0000 | [diff] [blame] | 171 | module_platform_driver(snd_smdk_driver); |
Sangbeom Kim | b8eeee6 | 2011-04-09 10:57:59 +0900 | [diff] [blame] | 172 | |
| 173 | MODULE_AUTHOR("Sangbeom Kim, <sbkim73@samsung.com>"); |
| 174 | MODULE_DESCRIPTION("ALSA SoC SMDK WM8580 for PCM"); |
| 175 | MODULE_LICENSE("GPL"); |