Stephen Warren | 7637af2 | 2013-12-04 15:19:27 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Tegra machine ASoC driver for boards using a MAX90809 CODEC. |
| 3 | * |
| 4 | * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms and conditions of the GNU General Public License, |
| 8 | * version 2, as published by the Free Software Foundation. |
| 9 | * |
| 10 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 13 | * more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | * |
| 18 | * Based on code copyright/by: |
| 19 | * |
| 20 | * Copyright (C) 2010-2012 - NVIDIA, Inc. |
| 21 | * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net> |
| 22 | * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd. |
| 23 | * Copyright 2007 Wolfson Microelectronics PLC. |
| 24 | */ |
| 25 | |
| 26 | #include <linux/module.h> |
| 27 | #include <linux/platform_device.h> |
| 28 | #include <linux/slab.h> |
| 29 | #include <linux/gpio.h> |
| 30 | #include <linux/of_gpio.h> |
| 31 | |
| 32 | #include <sound/core.h> |
| 33 | #include <sound/jack.h> |
| 34 | #include <sound/pcm.h> |
| 35 | #include <sound/pcm_params.h> |
| 36 | #include <sound/soc.h> |
| 37 | |
| 38 | #include "tegra_asoc_utils.h" |
| 39 | |
| 40 | #define DRV_NAME "tegra-snd-max98090" |
| 41 | |
| 42 | struct tegra_max98090 { |
| 43 | struct tegra_asoc_utils_data util_data; |
| 44 | int gpio_hp_det; |
| 45 | }; |
| 46 | |
| 47 | static int tegra_max98090_asoc_hw_params(struct snd_pcm_substream *substream, |
| 48 | struct snd_pcm_hw_params *params) |
| 49 | { |
| 50 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 51 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 52 | struct snd_soc_codec *codec = codec_dai->codec; |
| 53 | struct snd_soc_card *card = codec->card; |
| 54 | struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card); |
| 55 | int srate, mclk; |
| 56 | int err; |
| 57 | |
| 58 | srate = params_rate(params); |
| 59 | switch (srate) { |
| 60 | case 8000: |
| 61 | case 16000: |
| 62 | case 24000: |
| 63 | case 32000: |
| 64 | case 48000: |
| 65 | case 64000: |
| 66 | case 96000: |
| 67 | mclk = 12288000; |
| 68 | break; |
| 69 | case 11025: |
| 70 | case 22050: |
| 71 | case 44100: |
| 72 | case 88200: |
| 73 | mclk = 11289600; |
| 74 | break; |
| 75 | default: |
| 76 | mclk = 12000000; |
| 77 | break; |
| 78 | } |
| 79 | |
| 80 | err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk); |
| 81 | if (err < 0) { |
| 82 | dev_err(card->dev, "Can't configure clocks\n"); |
| 83 | return err; |
| 84 | } |
| 85 | |
| 86 | err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, |
| 87 | SND_SOC_CLOCK_IN); |
| 88 | if (err < 0) { |
| 89 | dev_err(card->dev, "codec_dai clock not set\n"); |
| 90 | return err; |
| 91 | } |
| 92 | |
| 93 | return 0; |
| 94 | } |
| 95 | |
| 96 | static struct snd_soc_ops tegra_max98090_ops = { |
| 97 | .hw_params = tegra_max98090_asoc_hw_params, |
| 98 | }; |
| 99 | |
| 100 | static struct snd_soc_jack tegra_max98090_hp_jack; |
| 101 | |
| 102 | static struct snd_soc_jack_pin tegra_max98090_hp_jack_pins[] = { |
| 103 | { |
| 104 | .pin = "Headphones", |
| 105 | .mask = SND_JACK_HEADPHONE, |
| 106 | }, |
| 107 | }; |
| 108 | |
| 109 | static struct snd_soc_jack_gpio tegra_max98090_hp_jack_gpio = { |
| 110 | .name = "Headphone detection", |
| 111 | .report = SND_JACK_HEADPHONE, |
| 112 | .debounce_time = 150, |
| 113 | .invert = 1, |
| 114 | }; |
| 115 | |
| 116 | static const struct snd_soc_dapm_widget tegra_max98090_dapm_widgets[] = { |
| 117 | SND_SOC_DAPM_HP("Headphones", NULL), |
| 118 | SND_SOC_DAPM_SPK("Speakers", NULL), |
| 119 | SND_SOC_DAPM_MIC("Mic Jack", NULL), |
| 120 | }; |
| 121 | |
| 122 | static const struct snd_kcontrol_new tegra_max98090_controls[] = { |
| 123 | SOC_DAPM_PIN_SWITCH("Speakers"), |
| 124 | }; |
| 125 | |
| 126 | static int tegra_max98090_asoc_init(struct snd_soc_pcm_runtime *rtd) |
| 127 | { |
| 128 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 129 | struct snd_soc_codec *codec = codec_dai->codec; |
| 130 | struct tegra_max98090 *machine = snd_soc_card_get_drvdata(codec->card); |
| 131 | |
| 132 | if (gpio_is_valid(machine->gpio_hp_det)) { |
| 133 | snd_soc_jack_new(codec, "Headphones", SND_JACK_HEADPHONE, |
| 134 | &tegra_max98090_hp_jack); |
| 135 | snd_soc_jack_add_pins(&tegra_max98090_hp_jack, |
| 136 | ARRAY_SIZE(tegra_max98090_hp_jack_pins), |
| 137 | tegra_max98090_hp_jack_pins); |
| 138 | |
| 139 | tegra_max98090_hp_jack_gpio.gpio = machine->gpio_hp_det; |
| 140 | snd_soc_jack_add_gpios(&tegra_max98090_hp_jack, |
| 141 | 1, |
| 142 | &tegra_max98090_hp_jack_gpio); |
| 143 | } |
| 144 | |
| 145 | return 0; |
| 146 | } |
| 147 | |
| 148 | static struct snd_soc_dai_link tegra_max98090_dai = { |
| 149 | .name = "max98090", |
| 150 | .stream_name = "max98090 PCM", |
| 151 | .codec_dai_name = "HiFi", |
| 152 | .init = tegra_max98090_asoc_init, |
| 153 | .ops = &tegra_max98090_ops, |
| 154 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| 155 | SND_SOC_DAIFMT_CBS_CFS, |
| 156 | }; |
| 157 | |
| 158 | static struct snd_soc_card snd_soc_tegra_max98090 = { |
| 159 | .name = "tegra-max98090", |
| 160 | .owner = THIS_MODULE, |
| 161 | .dai_link = &tegra_max98090_dai, |
| 162 | .num_links = 1, |
| 163 | .controls = tegra_max98090_controls, |
| 164 | .num_controls = ARRAY_SIZE(tegra_max98090_controls), |
| 165 | .dapm_widgets = tegra_max98090_dapm_widgets, |
| 166 | .num_dapm_widgets = ARRAY_SIZE(tegra_max98090_dapm_widgets), |
| 167 | .fully_routed = true, |
| 168 | }; |
| 169 | |
| 170 | static int tegra_max98090_probe(struct platform_device *pdev) |
| 171 | { |
| 172 | struct device_node *np = pdev->dev.of_node; |
| 173 | struct snd_soc_card *card = &snd_soc_tegra_max98090; |
| 174 | struct tegra_max98090 *machine; |
| 175 | int ret; |
| 176 | |
| 177 | machine = devm_kzalloc(&pdev->dev, |
| 178 | sizeof(struct tegra_max98090), GFP_KERNEL); |
| 179 | if (!machine) { |
| 180 | dev_err(&pdev->dev, "Can't allocate tegra_max98090\n"); |
| 181 | return -ENOMEM; |
| 182 | } |
| 183 | |
| 184 | card->dev = &pdev->dev; |
| 185 | platform_set_drvdata(pdev, card); |
| 186 | snd_soc_card_set_drvdata(card, machine); |
| 187 | |
| 188 | machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0); |
| 189 | if (machine->gpio_hp_det == -EPROBE_DEFER) |
| 190 | return -EPROBE_DEFER; |
| 191 | |
| 192 | ret = snd_soc_of_parse_card_name(card, "nvidia,model"); |
| 193 | if (ret) |
| 194 | goto err; |
| 195 | |
| 196 | ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing"); |
| 197 | if (ret) |
| 198 | goto err; |
| 199 | |
| 200 | tegra_max98090_dai.codec_of_node = of_parse_phandle(np, |
| 201 | "nvidia,audio-codec", 0); |
| 202 | if (!tegra_max98090_dai.codec_of_node) { |
| 203 | dev_err(&pdev->dev, |
| 204 | "Property 'nvidia,audio-codec' missing or invalid\n"); |
| 205 | ret = -EINVAL; |
| 206 | goto err; |
| 207 | } |
| 208 | |
| 209 | tegra_max98090_dai.cpu_of_node = of_parse_phandle(np, |
| 210 | "nvidia,i2s-controller", 0); |
| 211 | if (!tegra_max98090_dai.cpu_of_node) { |
| 212 | dev_err(&pdev->dev, |
| 213 | "Property 'nvidia,i2s-controller' missing or invalid\n"); |
| 214 | ret = -EINVAL; |
| 215 | goto err; |
| 216 | } |
| 217 | |
| 218 | tegra_max98090_dai.platform_of_node = tegra_max98090_dai.cpu_of_node; |
| 219 | |
| 220 | ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev); |
| 221 | if (ret) |
| 222 | goto err; |
| 223 | |
| 224 | ret = snd_soc_register_card(card); |
| 225 | if (ret) { |
| 226 | dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", |
| 227 | ret); |
| 228 | goto err_fini_utils; |
| 229 | } |
| 230 | |
| 231 | return 0; |
| 232 | |
| 233 | err_fini_utils: |
| 234 | tegra_asoc_utils_fini(&machine->util_data); |
| 235 | err: |
| 236 | return ret; |
| 237 | } |
| 238 | |
| 239 | static int tegra_max98090_remove(struct platform_device *pdev) |
| 240 | { |
| 241 | struct snd_soc_card *card = platform_get_drvdata(pdev); |
| 242 | struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card); |
| 243 | |
| 244 | snd_soc_jack_free_gpios(&tegra_max98090_hp_jack, 1, |
| 245 | &tegra_max98090_hp_jack_gpio); |
| 246 | |
| 247 | snd_soc_unregister_card(card); |
| 248 | |
| 249 | tegra_asoc_utils_fini(&machine->util_data); |
| 250 | |
| 251 | return 0; |
| 252 | } |
| 253 | |
| 254 | static const struct of_device_id tegra_max98090_of_match[] = { |
| 255 | { .compatible = "nvidia,tegra-audio-max98090", }, |
| 256 | {}, |
| 257 | }; |
| 258 | |
| 259 | static struct platform_driver tegra_max98090_driver = { |
| 260 | .driver = { |
| 261 | .name = DRV_NAME, |
| 262 | .owner = THIS_MODULE, |
| 263 | .pm = &snd_soc_pm_ops, |
| 264 | .of_match_table = tegra_max98090_of_match, |
| 265 | }, |
| 266 | .probe = tegra_max98090_probe, |
| 267 | .remove = tegra_max98090_remove, |
| 268 | }; |
| 269 | module_platform_driver(tegra_max98090_driver); |
| 270 | |
| 271 | MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>"); |
| 272 | MODULE_DESCRIPTION("Tegra max98090 machine ASoC driver"); |
| 273 | MODULE_LICENSE("GPL v2"); |
| 274 | MODULE_ALIAS("platform:" DRV_NAME); |
| 275 | MODULE_DEVICE_TABLE(of, tegra_max98090_of_match); |