Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 1 | /* |
| 2 | * harmony.c - Harmony machine ASoC driver |
| 3 | * |
| 4 | * Author: Stephen Warren <swarren@nvidia.com> |
Stephen Warren | 72de2b1 | 2011-01-28 14:26:36 -0700 | [diff] [blame^] | 5 | * Copyright (C) 2010-2011 - NVIDIA, Inc. |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 6 | * |
| 7 | * Based on code copyright/by: |
| 8 | * |
| 9 | * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd. |
| 10 | * |
| 11 | * Copyright 2007 Wolfson Microelectronics PLC. |
| 12 | * Author: Graeme Gregory |
| 13 | * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com |
| 14 | * |
| 15 | * This program is free software; you can redistribute it and/or |
| 16 | * modify it under the terms of the GNU General Public License |
| 17 | * version 2 as published by the Free Software Foundation. |
| 18 | * |
| 19 | * This program is distributed in the hope that it will be useful, but |
| 20 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 22 | * General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU General Public License |
| 25 | * along with this program; if not, write to the Free Software |
| 26 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| 27 | * 02110-1301 USA |
| 28 | * |
| 29 | */ |
| 30 | |
| 31 | #include <asm/mach-types.h> |
Stephen Warren | 72de2b1 | 2011-01-28 14:26:36 -0700 | [diff] [blame^] | 32 | |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 33 | #include <linux/module.h> |
Stephen Warren | 72de2b1 | 2011-01-28 14:26:36 -0700 | [diff] [blame^] | 34 | #include <linux/platform_device.h> |
| 35 | #include <linux/slab.h> |
| 36 | |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 37 | #include <sound/core.h> |
| 38 | #include <sound/pcm.h> |
| 39 | #include <sound/pcm_params.h> |
| 40 | #include <sound/soc.h> |
| 41 | |
| 42 | #include "tegra_das.h" |
| 43 | #include "tegra_i2s.h" |
| 44 | #include "tegra_pcm.h" |
| 45 | #include "tegra_asoc_utils.h" |
| 46 | |
Stephen Warren | 72de2b1 | 2011-01-28 14:26:36 -0700 | [diff] [blame^] | 47 | #define DRV_NAME "tegra-snd-harmony" |
| 48 | #define PREFIX DRV_NAME ": " |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 49 | |
Stephen Warren | 72de2b1 | 2011-01-28 14:26:36 -0700 | [diff] [blame^] | 50 | struct tegra_harmony { |
| 51 | }; |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 52 | |
| 53 | static int harmony_asoc_hw_params(struct snd_pcm_substream *substream, |
| 54 | struct snd_pcm_hw_params *params) |
| 55 | { |
| 56 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 57 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 58 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 59 | int srate, mclk, mclk_change; |
| 60 | int err; |
| 61 | |
| 62 | srate = params_rate(params); |
| 63 | switch (srate) { |
| 64 | case 64000: |
| 65 | case 88200: |
| 66 | case 96000: |
| 67 | mclk = 128 * srate; |
| 68 | break; |
| 69 | default: |
| 70 | mclk = 256 * srate; |
| 71 | break; |
| 72 | } |
| 73 | /* FIXME: Codec only requires >= 3MHz if OSR==0 */ |
| 74 | while (mclk < 6000000) |
| 75 | mclk *= 2; |
| 76 | |
| 77 | err = tegra_asoc_utils_set_rate(srate, mclk, &mclk_change); |
| 78 | if (err < 0) { |
| 79 | pr_err(PREFIX "Can't configure clocks\n"); |
| 80 | return err; |
| 81 | } |
| 82 | |
| 83 | err = snd_soc_dai_set_fmt(codec_dai, |
| 84 | SND_SOC_DAIFMT_I2S | |
| 85 | SND_SOC_DAIFMT_NB_NF | |
| 86 | SND_SOC_DAIFMT_CBS_CFS); |
| 87 | if (err < 0) { |
| 88 | pr_err(PREFIX "codec_dai fmt not set\n"); |
| 89 | return err; |
| 90 | } |
| 91 | |
| 92 | err = snd_soc_dai_set_fmt(cpu_dai, |
| 93 | SND_SOC_DAIFMT_I2S | |
| 94 | SND_SOC_DAIFMT_NB_NF | |
| 95 | SND_SOC_DAIFMT_CBS_CFS); |
| 96 | if (err < 0) { |
| 97 | pr_err(PREFIX "cpu_dai fmt not set\n"); |
| 98 | return err; |
| 99 | } |
| 100 | |
| 101 | if (mclk_change) { |
| 102 | err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, SND_SOC_CLOCK_IN); |
| 103 | if (err < 0) { |
| 104 | pr_err(PREFIX "codec_dai clock not set\n"); |
| 105 | return err; |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | return 0; |
| 110 | } |
| 111 | |
| 112 | static struct snd_soc_ops harmony_asoc_ops = { |
| 113 | .hw_params = harmony_asoc_hw_params, |
| 114 | }; |
| 115 | |
Stephen Warren | 62ffac4 | 2011-01-13 15:22:08 -0700 | [diff] [blame] | 116 | static const struct snd_soc_dapm_widget harmony_dapm_widgets[] = { |
| 117 | SND_SOC_DAPM_HP("Headphone Jack", NULL), |
| 118 | SND_SOC_DAPM_MIC("Mic Jack", NULL), |
| 119 | }; |
| 120 | |
| 121 | static const struct snd_soc_dapm_route harmony_audio_map[] = { |
| 122 | {"Headphone Jack", NULL, "HPOUTR"}, |
| 123 | {"Headphone Jack", NULL, "HPOUTL"}, |
| 124 | {"Mic Bias", NULL, "Mic Jack"}, |
| 125 | {"IN1L", NULL, "Mic Bias"}, |
| 126 | }; |
| 127 | |
| 128 | static int harmony_asoc_init(struct snd_soc_pcm_runtime *rtd) |
| 129 | { |
| 130 | struct snd_soc_codec *codec = rtd->codec; |
| 131 | struct snd_soc_dapm_context *dapm = &codec->dapm; |
| 132 | |
| 133 | snd_soc_dapm_new_controls(dapm, harmony_dapm_widgets, |
| 134 | ARRAY_SIZE(harmony_dapm_widgets)); |
| 135 | |
| 136 | snd_soc_dapm_add_routes(dapm, harmony_audio_map, |
| 137 | ARRAY_SIZE(harmony_audio_map)); |
| 138 | |
| 139 | snd_soc_dapm_enable_pin(dapm, "Headphone Jack"); |
| 140 | snd_soc_dapm_enable_pin(dapm, "Mic Jack"); |
| 141 | snd_soc_dapm_sync(dapm); |
| 142 | |
| 143 | return 0; |
| 144 | } |
| 145 | |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 146 | static struct snd_soc_dai_link harmony_wm8903_dai = { |
| 147 | .name = "WM8903", |
| 148 | .stream_name = "WM8903 PCM", |
| 149 | .codec_name = "wm8903-codec.0-001a", |
| 150 | .platform_name = "tegra-pcm-audio", |
| 151 | .cpu_dai_name = "tegra-i2s.0", |
| 152 | .codec_dai_name = "wm8903-hifi", |
Stephen Warren | 62ffac4 | 2011-01-13 15:22:08 -0700 | [diff] [blame] | 153 | .init = harmony_asoc_init, |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 154 | .ops = &harmony_asoc_ops, |
| 155 | }; |
| 156 | |
| 157 | static struct snd_soc_card snd_soc_harmony = { |
| 158 | .name = "tegra-harmony", |
| 159 | .dai_link = &harmony_wm8903_dai, |
| 160 | .num_links = 1, |
| 161 | }; |
| 162 | |
Stephen Warren | 72de2b1 | 2011-01-28 14:26:36 -0700 | [diff] [blame^] | 163 | static __devinit int tegra_snd_harmony_probe(struct platform_device *pdev) |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 164 | { |
Stephen Warren | 72de2b1 | 2011-01-28 14:26:36 -0700 | [diff] [blame^] | 165 | struct snd_soc_card *card = &snd_soc_harmony; |
| 166 | struct tegra_harmony *harmony; |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 167 | int ret; |
| 168 | |
| 169 | if (!machine_is_harmony()) { |
Stephen Warren | 72de2b1 | 2011-01-28 14:26:36 -0700 | [diff] [blame^] | 170 | dev_err(&pdev->dev, "Not running on Tegra Harmony!\n"); |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 171 | return -ENODEV; |
| 172 | } |
| 173 | |
Stephen Warren | 72de2b1 | 2011-01-28 14:26:36 -0700 | [diff] [blame^] | 174 | harmony = kzalloc(sizeof(struct tegra_harmony), GFP_KERNEL); |
| 175 | if (!harmony) { |
| 176 | dev_err(&pdev->dev, "Can't allocate tegra_harmony\n"); |
| 177 | return -ENOMEM; |
| 178 | } |
| 179 | |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 180 | ret = tegra_asoc_utils_init(); |
Stephen Warren | 72de2b1 | 2011-01-28 14:26:36 -0700 | [diff] [blame^] | 181 | if (ret) |
| 182 | goto err_free_harmony; |
| 183 | |
| 184 | card->dev = &pdev->dev; |
| 185 | platform_set_drvdata(pdev, card); |
| 186 | snd_soc_card_set_drvdata(card, harmony); |
| 187 | |
| 188 | ret = snd_soc_register_card(card); |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 189 | if (ret) { |
Stephen Warren | 72de2b1 | 2011-01-28 14:26:36 -0700 | [diff] [blame^] | 190 | dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 191 | ret); |
Stephen Warren | 72de2b1 | 2011-01-28 14:26:36 -0700 | [diff] [blame^] | 192 | goto err_clear_drvdata; |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 193 | } |
| 194 | |
| 195 | return 0; |
| 196 | |
Stephen Warren | 72de2b1 | 2011-01-28 14:26:36 -0700 | [diff] [blame^] | 197 | err_clear_drvdata: |
| 198 | snd_soc_card_set_drvdata(card, NULL); |
| 199 | platform_set_drvdata(pdev, NULL); |
| 200 | card->dev = NULL; |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 201 | tegra_asoc_utils_fini(); |
Stephen Warren | 72de2b1 | 2011-01-28 14:26:36 -0700 | [diff] [blame^] | 202 | err_free_harmony: |
| 203 | kfree(harmony); |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 204 | return ret; |
| 205 | } |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 206 | |
Stephen Warren | 72de2b1 | 2011-01-28 14:26:36 -0700 | [diff] [blame^] | 207 | static int __devexit tegra_snd_harmony_remove(struct platform_device *pdev) |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 208 | { |
Stephen Warren | 72de2b1 | 2011-01-28 14:26:36 -0700 | [diff] [blame^] | 209 | struct snd_soc_card *card = platform_get_drvdata(pdev); |
| 210 | struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card); |
| 211 | |
| 212 | snd_soc_unregister_card(card); |
| 213 | |
| 214 | snd_soc_card_set_drvdata(card, NULL); |
| 215 | platform_set_drvdata(pdev, NULL); |
| 216 | card->dev = NULL; |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 217 | |
| 218 | tegra_asoc_utils_fini(); |
Stephen Warren | 72de2b1 | 2011-01-28 14:26:36 -0700 | [diff] [blame^] | 219 | |
| 220 | kfree(harmony); |
| 221 | |
| 222 | return 0; |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 223 | } |
Stephen Warren | 72de2b1 | 2011-01-28 14:26:36 -0700 | [diff] [blame^] | 224 | |
| 225 | static struct platform_driver tegra_snd_harmony_driver = { |
| 226 | .driver = { |
| 227 | .name = DRV_NAME, |
| 228 | .owner = THIS_MODULE, |
| 229 | }, |
| 230 | .probe = tegra_snd_harmony_probe, |
| 231 | .remove = __devexit_p(tegra_snd_harmony_remove), |
| 232 | }; |
| 233 | |
| 234 | static int __init snd_tegra_harmony_init(void) |
| 235 | { |
| 236 | return platform_driver_register(&tegra_snd_harmony_driver); |
| 237 | } |
| 238 | module_init(snd_tegra_harmony_init); |
| 239 | |
| 240 | static void __exit snd_tegra_harmony_exit(void) |
| 241 | { |
| 242 | platform_driver_unregister(&tegra_snd_harmony_driver); |
| 243 | } |
| 244 | module_exit(snd_tegra_harmony_exit); |
Stephen Warren | a8bf1ba | 2011-01-07 22:36:16 -0700 | [diff] [blame] | 245 | |
| 246 | MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>"); |
| 247 | MODULE_DESCRIPTION("Harmony machine ASoC driver"); |
| 248 | MODULE_LICENSE("GPL"); |