sound/soc/rockchip/rk3288_hdmi_analog.c

   1 /*
   2  * Rockchip machine ASoC driver for RK3288 boards that have an HDMI and analog
   3  * audio output
   4  *
   5  * Copyright (c) 2016, Collabora Ltd.
   6  *
   7  * Authors: Sjoerd Simons <sjoerd.simons@collabora.com>,
   8  *          Romain Perier <romain.perier@collabora.com>
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms and conditions of the GNU General Public License,
  12  * version 2, as published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope it will be useful, but WITHOUT
  15  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  17  * more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/slab.h>
  27 #include <linux/gpio.h>
  28 #include <linux/of_gpio.h>
  29 #include <sound/core.h>
  30 #include <sound/jack.h>
  31 #include <sound/pcm.h>
  32 #include <sound/pcm_params.h>
  33 #include <sound/soc.h>
  34 #include <sound/soc-dapm.h>
  35
  36 #include "rockchip_i2s.h"
  37
  38 #define DRV_NAME "rk3288-snd-hdmi-analog"
  39
  40 struct rk_drvdata {
  41         int gpio_hp_en;
  42         int gpio_hp_det;
  43 };
  44
  45 static int rk_hp_power(struct snd_soc_dapm_widget *w,
  46                        struct snd_kcontrol *k, int event)
  47 {
  48         struct rk_drvdata *machine = snd_soc_card_get_drvdata(w->dapm->card);
  49
  50         if (!gpio_is_valid(machine->gpio_hp_en))
  51                 return 0;
  52
  53         gpio_set_value_cansleep(machine->gpio_hp_en,
  54                                 SND_SOC_DAPM_EVENT_ON(event));
  55
  56         return 0;
  57 }
  58
  59 static struct snd_soc_jack headphone_jack;
  60 static struct snd_soc_jack_pin headphone_jack_pins[] = {
  61         {
  62                 .pin = "Analog",
  63                 .mask = SND_JACK_HEADPHONE
  64         },
  65 };
  66
  67 static const struct snd_soc_dapm_widget rk_dapm_widgets[] = {
  68         SND_SOC_DAPM_HP("Analog", rk_hp_power),
  69         SND_SOC_DAPM_LINE("HDMI", NULL),
  70 };
  71
  72 static const struct snd_kcontrol_new rk_mc_controls[] = {
  73         SOC_DAPM_PIN_SWITCH("Analog"),
  74         SOC_DAPM_PIN_SWITCH("HDMI"),
  75 };
  76
  77 static int rk_hw_params(struct snd_pcm_substream *substream,
  78                         struct snd_pcm_hw_params *params)
  79 {
  80         int ret = 0;
  81         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  82         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  83         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  84         int mclk;
  85
  86         switch (params_rate(params)) {
  87         case 8000:
  88         case 16000:
  89         case 24000:
  90         case 32000:
  91         case 48000:
  92         case 64000:
  93         case 96000:
  94                 mclk = 12288000;
  95                 break;
  96         case 192000:
  97                 mclk = 24576000;
  98                 break;
  99         case 11025:
 100         case 22050:
 101         case 44100:
 102         case 88200:
 103                 mclk = 11289600;
 104                 break;
 105         default:
 106                 return -EINVAL;
 107         }
 108
 109         ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
 110                                      SND_SOC_CLOCK_OUT);
 111
 112         if (ret && ret != -ENOTSUPP) {
 113                 dev_err(codec_dai->dev, "Can't set cpu clock %d\n", ret);
 114                 return ret;
 115         }
 116
 117         ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
 118                                      SND_SOC_CLOCK_IN);
 119         if (ret && ret != -ENOTSUPP) {
 120                 dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret);
 121                 return ret;
 122         }
 123
 124         return 0;
 125 }
 126
 127 static struct snd_soc_jack_gpio rk_hp_jack_gpio = {
 128         .name = "Headphone detection",
 129         .report = SND_JACK_HEADPHONE,
 130         .debounce_time = 150
 131 };
 132
 133 static int rk_init(struct snd_soc_pcm_runtime *runtime)
 134 {
 135         struct rk_drvdata *machine = snd_soc_card_get_drvdata(runtime->card);
 136
 137         /* Enable Headset Jack detection */
 138         if (gpio_is_valid(machine->gpio_hp_det)) {
 139                 snd_soc_card_jack_new(runtime->card, "Headphone Jack",
 140                                       SND_JACK_HEADPHONE, &headphone_jack,
 141                                       headphone_jack_pins,
 142                                       ARRAY_SIZE(headphone_jack_pins));
 143                 rk_hp_jack_gpio.gpio = machine->gpio_hp_det;
 144                 snd_soc_jack_add_gpios(&headphone_jack, 1, &rk_hp_jack_gpio);
 145         }
 146
 147         return 0;
 148 }
 149
 150 static const struct snd_soc_ops rk_ops = {
 151         .hw_params = rk_hw_params,
 152 };
 153
 154 static struct snd_soc_dai_link_component rk_codecs[] = {
 155         { },
 156         {
 157                 .name = "hdmi-audio-codec.2.auto",
 158                 .dai_name = "hdmi-hifi.0",
 159         },
 160 };
 161
 162 static struct snd_soc_dai_link rk_dailink = {
 163         .name = "Codecs",
 164         .stream_name = "Audio",
 165         .init = rk_init,
 166         .ops = &rk_ops,
 167         .codecs = rk_codecs,
 168         .num_codecs = ARRAY_SIZE(rk_codecs),
 169         /* Set codecs as slave */
 170         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 171                 SND_SOC_DAIFMT_CBS_CFS,
 172 };
 173
 174 static struct snd_soc_card snd_soc_card_rk = {
 175         .name = "ROCKCHIP-I2S",
 176         .dai_link = &rk_dailink,
 177         .num_links = 1,
 178         .num_aux_devs = 0,
 179         .dapm_widgets = rk_dapm_widgets,
 180         .num_dapm_widgets = ARRAY_SIZE(rk_dapm_widgets),
 181         .controls = rk_mc_controls,
 182         .num_controls = ARRAY_SIZE(rk_mc_controls),
 183 };
 184
 185 static int snd_rk_mc_probe(struct platform_device *pdev)
 186 {
 187         int ret = 0;
 188         struct snd_soc_card *card = &snd_soc_card_rk;
 189         struct device_node *np = pdev->dev.of_node;
 190         struct rk_drvdata *machine;
 191         struct of_phandle_args args;
 192
 193         machine = devm_kzalloc(&pdev->dev, sizeof(struct rk_drvdata),
 194                                GFP_KERNEL);
 195         if (!machine)
 196                 return -ENOMEM;
 197
 198         card->dev = &pdev->dev;
 199
 200         machine->gpio_hp_det = of_get_named_gpio(np,
 201                 "rockchip,hp-det-gpios", 0);
 202         if (!gpio_is_valid(machine->gpio_hp_det) && machine->gpio_hp_det != -ENODEV)
 203                 return machine->gpio_hp_det;
 204
 205         machine->gpio_hp_en = of_get_named_gpio(np,
 206                 "rockchip,hp-en-gpios", 0);
 207         if (!gpio_is_valid(machine->gpio_hp_en) && machine->gpio_hp_en != -ENODEV)
 208                 return machine->gpio_hp_en;
 209
 210         if (gpio_is_valid(machine->gpio_hp_en)) {
 211                 ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_en,
 212                                             GPIOF_OUT_INIT_LOW, "hp_en");
 213                 if (ret) {
 214                         dev_err(card->dev, "cannot get hp_en gpio\n");
 215                         return ret;
 216                 }
 217         }
 218
 219         ret = snd_soc_of_parse_card_name(card, "rockchip,model");
 220         if (ret) {
 221                 dev_err(card->dev, "SoC parse card name failed %d\n", ret);
 222                 return ret;
 223         }
 224
 225         rk_dailink.codecs[0].of_node = of_parse_phandle(np,
 226                                                         "rockchip,audio-codec",
 227                                                         0);
 228         if (!rk_dailink.codecs[0].of_node) {
 229                 dev_err(&pdev->dev,
 230                         "Property 'rockchip,audio-codec' missing or invalid\n");
 231                 return -EINVAL;
 232         }
 233         ret = of_parse_phandle_with_fixed_args(np, "rockchip,audio-codec",
 234                                                0, 0, &args);
 235         if (ret) {
 236                 dev_err(&pdev->dev,
 237                         "Unable to parse property 'rockchip,audio-codec'\n");
 238                 return ret;
 239         }
 240
 241         ret = snd_soc_get_dai_name(&args, &rk_dailink.codecs[0].dai_name);
 242         if (ret) {
 243                 dev_err(&pdev->dev, "Unable to get codec_dai_name\n");
 244                 return ret;
 245         }
 246
 247         rk_dailink.cpu_of_node = of_parse_phandle(np, "rockchip,i2s-controller",
 248                                                   0);
 249         if (!rk_dailink.cpu_of_node) {
 250                 dev_err(&pdev->dev,
 251                         "Property 'rockchip,i2s-controller' missing or invalid\n");
 252                 return -EINVAL;
 253         }
 254
 255         rk_dailink.platform_of_node = rk_dailink.cpu_of_node;
 256
 257         ret = snd_soc_of_parse_audio_routing(card, "rockchip,routing");
 258         if (ret) {
 259                 dev_err(&pdev->dev,
 260                         "Unable to parse 'rockchip,routing' property\n");
 261                 return ret;
 262         }
 263
 264         snd_soc_card_set_drvdata(card, machine);
 265
 266         ret = devm_snd_soc_register_card(&pdev->dev, card);
 267         if (ret == -EPROBE_DEFER)
 268                 return -EPROBE_DEFER;
 269         if (ret) {
 270                 dev_err(&pdev->dev,
 271                         "Soc register card failed %d\n", ret);
 272                 return ret;
 273         }
 274
 275         return ret;
 276 }
 277
 278 static const struct of_device_id rockchip_sound_of_match[] = {
 279         { .compatible = "rockchip,rk3288-hdmi-analog", },
 280         {},
 281 };
 282
 283 MODULE_DEVICE_TABLE(of, rockchip_sound_of_match);
 284
 285 static struct platform_driver rockchip_sound_driver = {
 286         .probe = snd_rk_mc_probe,
 287         .driver = {
 288                 .name = DRV_NAME,
 289                 .owner = THIS_MODULE,
 290                 .pm = &snd_soc_pm_ops,
 291                 .of_match_table = rockchip_sound_of_match,
 292         },
 293 };
 294
 295 module_platform_driver(rockchip_sound_driver);
 296
 297 MODULE_AUTHOR("Sjoerd Simons <sjoerd.simons@collabora.com>");
 298 MODULE_DESCRIPTION("Rockchip RK3288 machine ASoC driver");
 299 MODULE_LICENSE("GPL v2");
 300 MODULE_ALIAS("platform:" DRV_NAME);