1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Rockchip machine ASoC driver for RK3288 boards that have an HDMI and analog 4 * audio output 5 * 6 * Copyright (c) 2016, Collabora Ltd. 7 * 8 * Authors: Sjoerd Simons <sjoerd.simons@collabora.com>, 9 * Romain Perier <romain.perier@collabora.com> 10 */ 11 12 #include <linux/module.h> 13 #include <linux/platform_device.h> 14 #include <linux/slab.h> 15 #include <linux/gpio.h> 16 #include <linux/of_gpio.h> 17 #include <sound/core.h> 18 #include <sound/jack.h> 19 #include <sound/pcm.h> 20 #include <sound/pcm_params.h> 21 #include <sound/soc.h> 22 #include <sound/soc-dapm.h> 23 24 #include "rockchip_i2s.h" 25 26 #define DRV_NAME "rk3288-snd-hdmi-analog" 27 28 struct rk_drvdata { 29 int gpio_hp_en; 30 int gpio_hp_det; 31 }; 32 33 static int rk_hp_power(struct snd_soc_dapm_widget *w, 34 struct snd_kcontrol *k, int event) 35 { 36 struct rk_drvdata *machine = snd_soc_card_get_drvdata(w->dapm->card); 37 38 if (!gpio_is_valid(machine->gpio_hp_en)) 39 return 0; 40 41 gpio_set_value_cansleep(machine->gpio_hp_en, 42 SND_SOC_DAPM_EVENT_ON(event)); 43 44 return 0; 45 } 46 47 static struct snd_soc_jack headphone_jack; 48 static struct snd_soc_jack_pin headphone_jack_pins[] = { 49 { 50 .pin = "Analog", 51 .mask = SND_JACK_HEADPHONE 52 }, 53 }; 54 55 static const struct snd_soc_dapm_widget rk_dapm_widgets[] = { 56 SND_SOC_DAPM_HP("Analog", rk_hp_power), 57 SND_SOC_DAPM_LINE("HDMI", NULL), 58 }; 59 60 static const struct snd_kcontrol_new rk_mc_controls[] = { 61 SOC_DAPM_PIN_SWITCH("Analog"), 62 SOC_DAPM_PIN_SWITCH("HDMI"), 63 }; 64 65 static int rk_hw_params(struct snd_pcm_substream *substream, 66 struct snd_pcm_hw_params *params) 67 { 68 int ret = 0; 69 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 70 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 71 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 72 int mclk; 73 74 switch (params_rate(params)) { 75 case 8000: 76 case 16000: 77 case 24000: 78 case 32000: 79 case 48000: 80 case 64000: 81 case 96000: 82 mclk = 12288000; 83 break; 84 case 192000: 85 mclk = 24576000; 86 break; 87 case 11025: 88 case 22050: 89 case 44100: 90 case 88200: 91 mclk = 11289600; 92 break; 93 default: 94 return -EINVAL; 95 } 96 97 ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk, 98 SND_SOC_CLOCK_OUT); 99 100 if (ret && ret != -ENOTSUPP) { 101 dev_err(codec_dai->dev, "Can't set cpu clock %d\n", ret); 102 return ret; 103 } 104 105 ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, 106 SND_SOC_CLOCK_IN); 107 if (ret && ret != -ENOTSUPP) { 108 dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret); 109 return ret; 110 } 111 112 return 0; 113 } 114 115 static struct snd_soc_jack_gpio rk_hp_jack_gpio = { 116 .name = "Headphone detection", 117 .report = SND_JACK_HEADPHONE, 118 .debounce_time = 150 119 }; 120 121 static int rk_init(struct snd_soc_pcm_runtime *runtime) 122 { 123 struct rk_drvdata *machine = snd_soc_card_get_drvdata(runtime->card); 124 125 /* Enable Headset Jack detection */ 126 if (gpio_is_valid(machine->gpio_hp_det)) { 127 snd_soc_card_jack_new_pins(runtime->card, "Headphone Jack", 128 SND_JACK_HEADPHONE, &headphone_jack, 129 headphone_jack_pins, 130 ARRAY_SIZE(headphone_jack_pins)); 131 rk_hp_jack_gpio.gpio = machine->gpio_hp_det; 132 snd_soc_jack_add_gpios(&headphone_jack, 1, &rk_hp_jack_gpio); 133 } 134 135 return 0; 136 } 137 138 static const struct snd_soc_ops rk_ops = { 139 .hw_params = rk_hw_params, 140 }; 141 142 SND_SOC_DAILINK_DEFS(audio, 143 DAILINK_COMP_ARRAY(COMP_EMPTY()), 144 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, NULL), 145 COMP_CODEC("hdmi-audio-codec.2.auto", "i2s-hifi")), 146 DAILINK_COMP_ARRAY(COMP_EMPTY())); 147 148 static struct snd_soc_dai_link rk_dailink = { 149 .name = "Codecs", 150 .stream_name = "Audio", 151 .init = rk_init, 152 .ops = &rk_ops, 153 /* Set codecs as slave */ 154 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 155 SND_SOC_DAIFMT_CBS_CFS, 156 SND_SOC_DAILINK_REG(audio), 157 }; 158 159 static struct snd_soc_card snd_soc_card_rk = { 160 .name = "ROCKCHIP-I2S", 161 .dai_link = &rk_dailink, 162 .num_links = 1, 163 .num_aux_devs = 0, 164 .dapm_widgets = rk_dapm_widgets, 165 .num_dapm_widgets = ARRAY_SIZE(rk_dapm_widgets), 166 .controls = rk_mc_controls, 167 .num_controls = ARRAY_SIZE(rk_mc_controls), 168 }; 169 170 static int snd_rk_mc_probe(struct platform_device *pdev) 171 { 172 int ret; 173 struct snd_soc_card *card = &snd_soc_card_rk; 174 struct device_node *np = pdev->dev.of_node; 175 struct rk_drvdata *machine; 176 struct of_phandle_args args; 177 178 machine = devm_kzalloc(&pdev->dev, sizeof(struct rk_drvdata), 179 GFP_KERNEL); 180 if (!machine) 181 return -ENOMEM; 182 183 card->dev = &pdev->dev; 184 185 machine->gpio_hp_det = of_get_named_gpio(np, 186 "rockchip,hp-det-gpios", 0); 187 if (!gpio_is_valid(machine->gpio_hp_det) && machine->gpio_hp_det != -ENODEV) 188 return machine->gpio_hp_det; 189 190 machine->gpio_hp_en = of_get_named_gpio(np, 191 "rockchip,hp-en-gpios", 0); 192 if (!gpio_is_valid(machine->gpio_hp_en) && machine->gpio_hp_en != -ENODEV) 193 return machine->gpio_hp_en; 194 195 if (gpio_is_valid(machine->gpio_hp_en)) { 196 ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_en, 197 GPIOF_OUT_INIT_LOW, "hp_en"); 198 if (ret) { 199 dev_err(card->dev, "cannot get hp_en gpio\n"); 200 return ret; 201 } 202 } 203 204 ret = snd_soc_of_parse_card_name(card, "rockchip,model"); 205 if (ret) { 206 dev_err(card->dev, "SoC parse card name failed %d\n", ret); 207 return ret; 208 } 209 210 rk_dailink.codecs[0].of_node = of_parse_phandle(np, 211 "rockchip,audio-codec", 212 0); 213 if (!rk_dailink.codecs[0].of_node) { 214 dev_err(&pdev->dev, 215 "Property 'rockchip,audio-codec' missing or invalid\n"); 216 return -EINVAL; 217 } 218 ret = of_parse_phandle_with_fixed_args(np, "rockchip,audio-codec", 219 0, 0, &args); 220 if (ret) { 221 dev_err(&pdev->dev, 222 "Unable to parse property 'rockchip,audio-codec'\n"); 223 return ret; 224 } 225 226 ret = snd_soc_get_dai_name(&args, &rk_dailink.codecs[0].dai_name); 227 if (ret) { 228 dev_err(&pdev->dev, "Unable to get codec_dai_name\n"); 229 return ret; 230 } 231 232 rk_dailink.cpus->of_node = of_parse_phandle(np, "rockchip,i2s-controller", 233 0); 234 if (!rk_dailink.cpus->of_node) { 235 dev_err(&pdev->dev, 236 "Property 'rockchip,i2s-controller' missing or invalid\n"); 237 return -EINVAL; 238 } 239 240 rk_dailink.platforms->of_node = rk_dailink.cpus->of_node; 241 242 ret = snd_soc_of_parse_audio_routing(card, "rockchip,routing"); 243 if (ret) { 244 dev_err(&pdev->dev, 245 "Unable to parse 'rockchip,routing' property\n"); 246 return ret; 247 } 248 249 snd_soc_card_set_drvdata(card, machine); 250 251 ret = devm_snd_soc_register_card(&pdev->dev, card); 252 if (ret) 253 return dev_err_probe(&pdev->dev, ret, 254 "Soc register card failed\n"); 255 256 return 0; 257 } 258 259 static const struct of_device_id rockchip_sound_of_match[] = { 260 { .compatible = "rockchip,rk3288-hdmi-analog", }, 261 {}, 262 }; 263 264 MODULE_DEVICE_TABLE(of, rockchip_sound_of_match); 265 266 static struct platform_driver rockchip_sound_driver = { 267 .probe = snd_rk_mc_probe, 268 .driver = { 269 .name = DRV_NAME, 270 .pm = &snd_soc_pm_ops, 271 .of_match_table = rockchip_sound_of_match, 272 }, 273 }; 274 275 module_platform_driver(rockchip_sound_driver); 276 277 MODULE_AUTHOR("Sjoerd Simons <sjoerd.simons@collabora.com>"); 278 MODULE_DESCRIPTION("Rockchip RK3288 machine ASoC driver"); 279 MODULE_LICENSE("GPL v2"); 280 MODULE_ALIAS("platform:" DRV_NAME); 281