1 // SPDX-License-Identifier: GPL-2.0-only 2 // 3 // Copyright(c) 2021-2022 Intel Corporation 4 // 5 // Authors: Cezary Rojewski <cezary.rojewski@intel.com> 6 // Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com> 7 // 8 9 #include <linux/module.h> 10 #include <sound/jack.h> 11 #include <sound/pcm.h> 12 #include <sound/pcm_params.h> 13 #include <sound/soc.h> 14 #include <sound/soc-acpi.h> 15 #include "../../../codecs/rt274.h" 16 #include "../utils.h" 17 18 #define AVS_RT274_FREQ_OUT 24000000 19 #define AVS_RT274_BE_FIXUP_RATE 48000 20 #define RT274_CODEC_DAI "rt274-aif1" 21 22 static const struct snd_kcontrol_new card_controls[] = { 23 SOC_DAPM_PIN_SWITCH("Headphone Jack"), 24 SOC_DAPM_PIN_SWITCH("Mic Jack"), 25 }; 26 27 static int 28 avs_rt274_clock_control(struct snd_soc_dapm_widget *w, struct snd_kcontrol *control, int event) 29 { 30 struct snd_soc_dapm_context *dapm = w->dapm; 31 struct snd_soc_card *card = dapm->card; 32 struct snd_soc_dai *codec_dai; 33 int ret; 34 35 codec_dai = snd_soc_card_get_codec_dai(card, RT274_CODEC_DAI); 36 if (!codec_dai) 37 return -EINVAL; 38 39 /* Codec needs clock for Jack detection and button press */ 40 ret = snd_soc_dai_set_sysclk(codec_dai, RT274_SCLK_S_PLL2, AVS_RT274_FREQ_OUT, 41 SND_SOC_CLOCK_IN); 42 if (ret < 0) { 43 dev_err(codec_dai->dev, "set codec sysclk failed: %d\n", ret); 44 return ret; 45 } 46 47 if (SND_SOC_DAPM_EVENT_ON(event)) { 48 int ratio = 100; 49 50 snd_soc_dai_set_bclk_ratio(codec_dai, ratio); 51 52 ret = snd_soc_dai_set_pll(codec_dai, 0, RT274_PLL2_S_BCLK, 53 AVS_RT274_BE_FIXUP_RATE * ratio, AVS_RT274_FREQ_OUT); 54 if (ret) { 55 dev_err(codec_dai->dev, "failed to enable PLL2: %d\n", ret); 56 return ret; 57 } 58 } 59 60 return 0; 61 } 62 63 static const struct snd_soc_dapm_widget card_widgets[] = { 64 SND_SOC_DAPM_HP("Headphone Jack", NULL), 65 SND_SOC_DAPM_MIC("Mic Jack", NULL), 66 SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, avs_rt274_clock_control, 67 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), 68 }; 69 70 static const struct snd_soc_dapm_route card_base_routes[] = { 71 {"Headphone Jack", NULL, "HPO Pin"}, 72 {"MIC", NULL, "Mic Jack"}, 73 74 {"Headphone Jack", NULL, "Platform Clock"}, 75 {"MIC", NULL, "Platform Clock"}, 76 }; 77 78 static const struct snd_soc_jack_pin card_headset_pins[] = { 79 { 80 .pin = "Headphone Jack", 81 .mask = SND_JACK_HEADPHONE, 82 }, 83 { 84 .pin = "Mic Jack", 85 .mask = SND_JACK_MICROPHONE, 86 }, 87 }; 88 89 static int avs_rt274_codec_init(struct snd_soc_pcm_runtime *runtime) 90 { 91 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(runtime, 0); 92 struct snd_soc_component *component = codec_dai->component; 93 struct snd_soc_jack_pin *pins; 94 struct snd_soc_jack *jack; 95 struct snd_soc_card *card = runtime->card; 96 int num_pins, ret; 97 98 jack = snd_soc_card_get_drvdata(card); 99 num_pins = ARRAY_SIZE(card_headset_pins); 100 101 pins = devm_kmemdup(card->dev, card_headset_pins, sizeof(*pins) * num_pins, GFP_KERNEL); 102 if (!pins) 103 return -ENOMEM; 104 105 ret = snd_soc_card_jack_new_pins(card, "Headset Jack", SND_JACK_HEADSET, jack, pins, 106 num_pins); 107 if (ret) 108 return ret; 109 110 snd_soc_component_set_jack(component, jack, NULL); 111 112 /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */ 113 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24); 114 if (ret < 0) { 115 dev_err(card->dev, "can't set codec pcm format %d\n", ret); 116 return ret; 117 } 118 119 card->dapm.idle_bias_off = true; 120 121 return 0; 122 } 123 124 static void avs_rt274_codec_exit(struct snd_soc_pcm_runtime *rtd) 125 { 126 snd_soc_component_set_jack(snd_soc_rtd_to_codec(rtd, 0)->component, NULL, NULL); 127 } 128 129 static int avs_rt274_be_fixup(struct snd_soc_pcm_runtime *runtime, struct snd_pcm_hw_params *params) 130 { 131 struct snd_interval *rate, *channels; 132 struct snd_mask *fmt; 133 134 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 135 channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); 136 fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 137 138 /* The ADSP will convert the FE rate to 48k, stereo */ 139 rate->min = rate->max = AVS_RT274_BE_FIXUP_RATE; 140 channels->min = channels->max = 2; 141 142 /* set SSPN to 24 bit */ 143 snd_mask_none(fmt); 144 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE); 145 146 return 0; 147 } 148 149 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port, 150 int tdm_slot, struct snd_soc_dai_link **dai_link) 151 { 152 struct snd_soc_dai_link_component *platform; 153 struct snd_soc_dai_link *dl; 154 155 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL); 156 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL); 157 if (!dl || !platform) 158 return -ENOMEM; 159 160 platform->name = platform_name; 161 162 dl->name = devm_kasprintf(dev, GFP_KERNEL, 163 AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot)); 164 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL); 165 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL); 166 if (!dl->name || !dl->cpus || !dl->codecs) 167 return -ENOMEM; 168 169 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, 170 AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot)); 171 dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "i2c-INT34C2:00"); 172 dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, RT274_CODEC_DAI); 173 if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name) 174 return -ENOMEM; 175 176 dl->num_cpus = 1; 177 dl->num_codecs = 1; 178 dl->platforms = platform; 179 dl->num_platforms = 1; 180 dl->id = 0; 181 dl->dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS; 182 dl->init = avs_rt274_codec_init; 183 dl->exit = avs_rt274_codec_exit; 184 dl->be_hw_params_fixup = avs_rt274_be_fixup; 185 dl->nonatomic = 1; 186 dl->no_pcm = 1; 187 dl->dpcm_capture = 1; 188 dl->dpcm_playback = 1; 189 190 *dai_link = dl; 191 192 return 0; 193 } 194 195 static int avs_card_suspend_pre(struct snd_soc_card *card) 196 { 197 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, RT274_CODEC_DAI); 198 199 return snd_soc_component_set_jack(codec_dai->component, NULL, NULL); 200 } 201 202 static int avs_card_resume_post(struct snd_soc_card *card) 203 { 204 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, RT274_CODEC_DAI); 205 struct snd_soc_jack *jack = snd_soc_card_get_drvdata(card); 206 207 return snd_soc_component_set_jack(codec_dai->component, jack, NULL); 208 } 209 210 static int avs_rt274_probe(struct platform_device *pdev) 211 { 212 struct snd_soc_dai_link *dai_link; 213 struct snd_soc_acpi_mach *mach; 214 struct snd_soc_card *card; 215 struct snd_soc_jack *jack; 216 struct device *dev = &pdev->dev; 217 const char *pname; 218 int ssp_port, tdm_slot, ret; 219 220 mach = dev_get_platdata(dev); 221 pname = mach->mach_params.platform; 222 223 ret = avs_mach_get_ssp_tdm(dev, mach, &ssp_port, &tdm_slot); 224 if (ret) 225 return ret; 226 227 ret = avs_create_dai_link(dev, pname, ssp_port, tdm_slot, &dai_link); 228 if (ret) { 229 dev_err(dev, "Failed to create dai link: %d", ret); 230 return ret; 231 } 232 233 jack = devm_kzalloc(dev, sizeof(*jack), GFP_KERNEL); 234 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 235 if (!jack || !card) 236 return -ENOMEM; 237 238 card->name = "avs_rt274"; 239 card->dev = dev; 240 card->owner = THIS_MODULE; 241 card->suspend_pre = avs_card_suspend_pre; 242 card->resume_post = avs_card_resume_post; 243 card->dai_link = dai_link; 244 card->num_links = 1; 245 card->controls = card_controls; 246 card->num_controls = ARRAY_SIZE(card_controls); 247 card->dapm_widgets = card_widgets; 248 card->num_dapm_widgets = ARRAY_SIZE(card_widgets); 249 card->dapm_routes = card_base_routes; 250 card->num_dapm_routes = ARRAY_SIZE(card_base_routes); 251 card->fully_routed = true; 252 snd_soc_card_set_drvdata(card, jack); 253 254 ret = snd_soc_fixup_dai_links_platform_name(card, pname); 255 if (ret) 256 return ret; 257 258 return devm_snd_soc_register_card(dev, card); 259 } 260 261 static const struct platform_device_id avs_rt274_driver_ids[] = { 262 { 263 .name = "avs_rt274", 264 }, 265 {}, 266 }; 267 MODULE_DEVICE_TABLE(platform, avs_rt274_driver_ids); 268 269 static struct platform_driver avs_rt274_driver = { 270 .probe = avs_rt274_probe, 271 .driver = { 272 .name = "avs_rt274", 273 .pm = &snd_soc_pm_ops, 274 }, 275 .id_table = avs_rt274_driver_ids, 276 }; 277 278 module_platform_driver(avs_rt274_driver); 279 280 MODULE_DESCRIPTION("Intel rt274 machine driver"); 281 MODULE_LICENSE("GPL"); 282