Lars-Peter Clausen | aef05294 | 2011-06-27 17:04:02 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Machine driver for EVAL-ADAV801 and EVAL-ADAV803 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/init.h> |
| 12 | #include <linux/platform_device.h> |
| 13 | #include <sound/core.h> |
| 14 | #include <sound/pcm.h> |
| 15 | #include <sound/soc.h> |
| 16 | |
| 17 | #include "../codecs/adav80x.h" |
| 18 | |
| 19 | static const struct snd_soc_dapm_widget bfin_eval_adav80x_dapm_widgets[] = { |
| 20 | SND_SOC_DAPM_LINE("Line Out", NULL), |
| 21 | SND_SOC_DAPM_LINE("Line In", NULL), |
| 22 | }; |
| 23 | |
| 24 | static const struct snd_soc_dapm_route bfin_eval_adav80x_dapm_routes[] = { |
| 25 | { "Line Out", NULL, "VOUTL" }, |
| 26 | { "Line Out", NULL, "VOUTR" }, |
| 27 | |
| 28 | { "VINL", NULL, "Line In" }, |
| 29 | { "VINR", NULL, "Line In" }, |
| 30 | }; |
| 31 | |
| 32 | static int bfin_eval_adav80x_hw_params(struct snd_pcm_substream *substream, |
| 33 | struct snd_pcm_hw_params *params) |
| 34 | { |
| 35 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 36 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 37 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 38 | int ret; |
| 39 | |
| 40 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | |
| 41 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); |
| 42 | if (ret) |
| 43 | return ret; |
| 44 | |
| 45 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | |
| 46 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); |
| 47 | if (ret) |
| 48 | return ret; |
| 49 | |
| 50 | ret = snd_soc_dai_set_pll(codec_dai, ADAV80X_PLL1, ADAV80X_PLL_SRC_XTAL, |
| 51 | 27000000, params_rate(params) * 256); |
| 52 | if (ret) |
| 53 | return ret; |
| 54 | |
| 55 | ret = snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_PLL1, |
| 56 | params_rate(params) * 256, SND_SOC_CLOCK_IN); |
| 57 | |
| 58 | return ret; |
| 59 | } |
| 60 | |
| 61 | static int bfin_eval_adav80x_codec_init(struct snd_soc_pcm_runtime *rtd) |
| 62 | { |
| 63 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 64 | |
| 65 | snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK1, 0, |
| 66 | SND_SOC_CLOCK_OUT); |
| 67 | snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK2, 0, |
| 68 | SND_SOC_CLOCK_OUT); |
| 69 | snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK3, 0, |
| 70 | SND_SOC_CLOCK_OUT); |
| 71 | |
| 72 | snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_XTAL, 2700000, 0); |
| 73 | |
| 74 | return 0; |
| 75 | } |
| 76 | |
| 77 | static struct snd_soc_ops bfin_eval_adav80x_ops = { |
| 78 | .hw_params = bfin_eval_adav80x_hw_params, |
| 79 | }; |
| 80 | |
| 81 | static struct snd_soc_dai_link bfin_eval_adav80x_dais[] = { |
| 82 | { |
| 83 | .name = "adav80x", |
| 84 | .stream_name = "ADAV80x HiFi", |
| 85 | .cpu_dai_name = "bfin-i2s.0", |
| 86 | .codec_dai_name = "adav80x-hifi", |
| 87 | .platform_name = "bfin-i2s-pcm-audio", |
| 88 | .init = bfin_eval_adav80x_codec_init, |
| 89 | .ops = &bfin_eval_adav80x_ops, |
| 90 | }, |
| 91 | }; |
| 92 | |
| 93 | static struct snd_soc_card bfin_eval_adav80x = { |
| 94 | .name = "bfin-eval-adav80x", |
| 95 | .dai_link = bfin_eval_adav80x_dais, |
| 96 | .num_links = ARRAY_SIZE(bfin_eval_adav80x_dais), |
| 97 | |
| 98 | .dapm_widgets = bfin_eval_adav80x_dapm_widgets, |
| 99 | .num_dapm_widgets = ARRAY_SIZE(bfin_eval_adav80x_dapm_widgets), |
| 100 | .dapm_routes = bfin_eval_adav80x_dapm_routes, |
| 101 | .num_dapm_routes = ARRAY_SIZE(bfin_eval_adav80x_dapm_routes), |
| 102 | }; |
| 103 | |
| 104 | enum bfin_eval_adav80x_type { |
| 105 | BFIN_EVAL_ADAV801, |
| 106 | BFIN_EVAL_ADAV803, |
| 107 | }; |
| 108 | |
| 109 | static int bfin_eval_adav80x_probe(struct platform_device *pdev) |
| 110 | { |
| 111 | struct snd_soc_card *card = &bfin_eval_adav80x; |
| 112 | const char *codec_name; |
| 113 | |
| 114 | switch (platform_get_device_id(pdev)->driver_data) { |
| 115 | case BFIN_EVAL_ADAV801: |
| 116 | codec_name = "spi0.1"; |
| 117 | break; |
| 118 | case BFIN_EVAL_ADAV803: |
| 119 | codec_name = "adav803.0-0034"; |
| 120 | break; |
| 121 | default: |
| 122 | return -EINVAL; |
| 123 | } |
| 124 | |
| 125 | bfin_eval_adav80x_dais[0].codec_name = codec_name; |
| 126 | |
| 127 | card->dev = &pdev->dev; |
| 128 | |
| 129 | return snd_soc_register_card(&bfin_eval_adav80x); |
| 130 | } |
| 131 | |
| 132 | static int __devexit bfin_eval_adav80x_remove(struct platform_device *pdev) |
| 133 | { |
| 134 | struct snd_soc_card *card = platform_get_drvdata(pdev); |
| 135 | |
| 136 | snd_soc_unregister_card(card); |
| 137 | |
| 138 | return 0; |
| 139 | } |
| 140 | |
| 141 | static const struct platform_device_id bfin_eval_adav80x_ids[] = { |
| 142 | { "bfin-eval-adav801", BFIN_EVAL_ADAV801 }, |
| 143 | { "bfin-eval-adav803", BFIN_EVAL_ADAV803 }, |
| 144 | { }, |
| 145 | }; |
| 146 | MODULE_DEVICE_TABLE(platform, bfin_eval_adav80x_ids); |
| 147 | |
| 148 | static struct platform_driver bfin_eval_adav80x_driver = { |
| 149 | .driver = { |
| 150 | .name = "bfin-eval-adav80x", |
| 151 | .owner = THIS_MODULE, |
| 152 | .pm = &snd_soc_pm_ops, |
| 153 | }, |
| 154 | .probe = bfin_eval_adav80x_probe, |
| 155 | .remove = __devexit_p(bfin_eval_adav80x_remove), |
| 156 | .id_table = bfin_eval_adav80x_ids, |
| 157 | }; |
| 158 | |
| 159 | static int __init bfin_eval_adav80x_init(void) |
| 160 | { |
| 161 | return platform_driver_register(&bfin_eval_adav80x_driver); |
| 162 | } |
| 163 | module_init(bfin_eval_adav80x_init); |
| 164 | |
| 165 | static void __exit bfin_eval_adav80x_exit(void) |
| 166 | { |
| 167 | platform_driver_unregister(&bfin_eval_adav80x_driver); |
| 168 | } |
| 169 | module_exit(bfin_eval_adav80x_exit); |
| 170 | |
| 171 | MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); |
| 172 | MODULE_DESCRIPTION("ALSA SoC bfin adav80x driver"); |
| 173 | MODULE_LICENSE("GPL"); |