| 1 | /* |
| 2 | * Machine driver for EVAL-ADAU1373 on Analog Devices bfin |
| 3 | * evaluation boards. |
| 4 | * |
| 5 | * Copyright 2011 Analog Devices Inc. |
| 6 | * Author: Lars-Peter Clausen <lars@metafoo.de> |
| 7 | * |
| 8 | * Licensed under the GPL-2 or later. |
| 9 | */ |
| 10 | |
| 11 | #include <linux/module.h> |
| 12 | #include <linux/device.h> |
| 13 | #include <sound/core.h> |
| 14 | #include <sound/pcm.h> |
| 15 | #include <sound/soc.h> |
| 16 | #include <sound/pcm_params.h> |
| 17 | |
| 18 | #include "../codecs/adau1373.h" |
| 19 | |
| 20 | static const struct snd_soc_dapm_widget bfin_eval_adau1373_dapm_widgets[] = { |
| 21 | SND_SOC_DAPM_LINE("Line In1", NULL), |
| 22 | SND_SOC_DAPM_LINE("Line In2", NULL), |
| 23 | SND_SOC_DAPM_LINE("Line In3", NULL), |
| 24 | SND_SOC_DAPM_LINE("Line In4", NULL), |
| 25 | |
| 26 | SND_SOC_DAPM_LINE("Line Out1", NULL), |
| 27 | SND_SOC_DAPM_LINE("Line Out2", NULL), |
| 28 | SND_SOC_DAPM_LINE("Stereo Out", NULL), |
| 29 | SND_SOC_DAPM_HP("Headphone", NULL), |
| 30 | SND_SOC_DAPM_HP("Earpiece", NULL), |
| 31 | SND_SOC_DAPM_SPK("Speaker", NULL), |
| 32 | }; |
| 33 | |
| 34 | static const struct snd_soc_dapm_route bfin_eval_adau1373_dapm_routes[] = { |
| 35 | { "AIN1L", NULL, "Line In1" }, |
| 36 | { "AIN1R", NULL, "Line In1" }, |
| 37 | { "AIN2L", NULL, "Line In2" }, |
| 38 | { "AIN2R", NULL, "Line In2" }, |
| 39 | { "AIN3L", NULL, "Line In3" }, |
| 40 | { "AIN3R", NULL, "Line In3" }, |
| 41 | { "AIN4L", NULL, "Line In4" }, |
| 42 | { "AIN4R", NULL, "Line In4" }, |
| 43 | |
| 44 | /* MICBIAS can be connected via a jumper to the line-in jack, since w |
| 45 | don't know which one is going to be used, just power both. */ |
| 46 | { "Line In1", NULL, "MICBIAS1" }, |
| 47 | { "Line In2", NULL, "MICBIAS1" }, |
| 48 | { "Line In3", NULL, "MICBIAS1" }, |
| 49 | { "Line In4", NULL, "MICBIAS1" }, |
| 50 | { "Line In1", NULL, "MICBIAS2" }, |
| 51 | { "Line In2", NULL, "MICBIAS2" }, |
| 52 | { "Line In3", NULL, "MICBIAS2" }, |
| 53 | { "Line In4", NULL, "MICBIAS2" }, |
| 54 | |
| 55 | { "Line Out1", NULL, "LOUT1L" }, |
| 56 | { "Line Out1", NULL, "LOUT1R" }, |
| 57 | { "Line Out2", NULL, "LOUT2L" }, |
| 58 | { "Line Out2", NULL, "LOUT2R" }, |
| 59 | { "Headphone", NULL, "HPL" }, |
| 60 | { "Headphone", NULL, "HPR" }, |
| 61 | { "Earpiece", NULL, "EP" }, |
| 62 | { "Speaker", NULL, "SPKL" }, |
| 63 | { "Stereo Out", NULL, "SPKR" }, |
| 64 | }; |
| 65 | |
| 66 | static int bfin_eval_adau1373_hw_params(struct snd_pcm_substream *substream, |
| 67 | struct snd_pcm_hw_params *params) |
| 68 | { |
| 69 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 70 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 71 | int ret; |
| 72 | int pll_rate; |
| 73 | |
| 74 | switch (params_rate(params)) { |
| 75 | case 48000: |
| 76 | case 8000: |
| 77 | case 12000: |
| 78 | case 16000: |
| 79 | case 24000: |
| 80 | case 32000: |
| 81 | pll_rate = 48000 * 1024; |
| 82 | break; |
| 83 | case 44100: |
| 84 | case 7350: |
| 85 | case 11025: |
| 86 | case 14700: |
| 87 | case 22050: |
| 88 | case 29400: |
| 89 | pll_rate = 44100 * 1024; |
| 90 | break; |
| 91 | default: |
| 92 | return -EINVAL; |
| 93 | } |
| 94 | |
| 95 | ret = snd_soc_dai_set_pll(codec_dai, ADAU1373_PLL1, |
| 96 | ADAU1373_PLL_SRC_MCLK1, 12288000, pll_rate); |
| 97 | if (ret) |
| 98 | return ret; |
| 99 | |
| 100 | ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1373_CLK_SRC_PLL1, pll_rate, |
| 101 | SND_SOC_CLOCK_IN); |
| 102 | |
| 103 | return ret; |
| 104 | } |
| 105 | |
| 106 | static int bfin_eval_adau1373_codec_init(struct snd_soc_pcm_runtime *rtd) |
| 107 | { |
| 108 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 109 | unsigned int pll_rate = 48000 * 1024; |
| 110 | int ret; |
| 111 | |
| 112 | ret = snd_soc_dai_set_pll(codec_dai, ADAU1373_PLL1, |
| 113 | ADAU1373_PLL_SRC_MCLK1, 12288000, pll_rate); |
| 114 | if (ret) |
| 115 | return ret; |
| 116 | |
| 117 | ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1373_CLK_SRC_PLL1, pll_rate, |
| 118 | SND_SOC_CLOCK_IN); |
| 119 | |
| 120 | return ret; |
| 121 | } |
| 122 | static struct snd_soc_ops bfin_eval_adau1373_ops = { |
| 123 | .hw_params = bfin_eval_adau1373_hw_params, |
| 124 | }; |
| 125 | |
| 126 | static struct snd_soc_dai_link bfin_eval_adau1373_dai = { |
| 127 | .name = "adau1373", |
| 128 | .stream_name = "adau1373", |
| 129 | .cpu_dai_name = "bfin-i2s.0", |
| 130 | .codec_dai_name = "adau1373-aif1", |
| 131 | .platform_name = "bfin-i2s-pcm-audio", |
| 132 | .codec_name = "adau1373.0-001a", |
| 133 | .ops = &bfin_eval_adau1373_ops, |
| 134 | .init = bfin_eval_adau1373_codec_init, |
| 135 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| 136 | SND_SOC_DAIFMT_CBM_CFM, |
| 137 | }; |
| 138 | |
| 139 | static struct snd_soc_card bfin_eval_adau1373 = { |
| 140 | .name = "bfin-eval-adau1373", |
| 141 | .owner = THIS_MODULE, |
| 142 | .dai_link = &bfin_eval_adau1373_dai, |
| 143 | .num_links = 1, |
| 144 | |
| 145 | .dapm_widgets = bfin_eval_adau1373_dapm_widgets, |
| 146 | .num_dapm_widgets = ARRAY_SIZE(bfin_eval_adau1373_dapm_widgets), |
| 147 | .dapm_routes = bfin_eval_adau1373_dapm_routes, |
| 148 | .num_dapm_routes = ARRAY_SIZE(bfin_eval_adau1373_dapm_routes), |
| 149 | }; |
| 150 | |
| 151 | static int bfin_eval_adau1373_probe(struct platform_device *pdev) |
| 152 | { |
| 153 | struct snd_soc_card *card = &bfin_eval_adau1373; |
| 154 | |
| 155 | card->dev = &pdev->dev; |
| 156 | |
| 157 | return snd_soc_register_card(&bfin_eval_adau1373); |
| 158 | } |
| 159 | |
| 160 | static int bfin_eval_adau1373_remove(struct platform_device *pdev) |
| 161 | { |
| 162 | struct snd_soc_card *card = platform_get_drvdata(pdev); |
| 163 | |
| 164 | snd_soc_unregister_card(card); |
| 165 | |
| 166 | return 0; |
| 167 | } |
| 168 | |
| 169 | static struct platform_driver bfin_eval_adau1373_driver = { |
| 170 | .driver = { |
| 171 | .name = "bfin-eval-adau1373", |
| 172 | .pm = &snd_soc_pm_ops, |
| 173 | }, |
| 174 | .probe = bfin_eval_adau1373_probe, |
| 175 | .remove = bfin_eval_adau1373_remove, |
| 176 | }; |
| 177 | |
| 178 | module_platform_driver(bfin_eval_adau1373_driver); |
| 179 | |
| 180 | MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); |
| 181 | MODULE_DESCRIPTION("ALSA SoC bfin adau1373 driver"); |
| 182 | MODULE_LICENSE("GPL"); |
| 183 | MODULE_ALIAS("platform:bfin-eval-adau1373"); |