1 // SPDX-License-Identifier: GPL-2.0-only 2 // 3 // Copyright(c) 2021-2022 Intel Corporation. All rights reserved. 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 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", SND_JACK_HEADSET, jack, pins, num_pins); 106 if (ret) 107 return ret; 108 109 snd_soc_component_set_jack(component, jack, NULL); 110 111 /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */ 112 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24); 113 if (ret < 0) { 114 dev_err(card->dev, "can't set codec pcm format %d\n", ret); 115 return ret; 116 } 117 118 card->dapm.idle_bias_off = true; 119 120 return 0; 121 } 122 123 static void avs_rt274_codec_exit(struct snd_soc_pcm_runtime *rtd) 124 { 125 snd_soc_component_set_jack(snd_soc_rtd_to_codec(rtd, 0)->component, NULL, NULL); 126 } 127 128 static int avs_rt274_be_fixup(struct snd_soc_pcm_runtime *runtime, struct snd_pcm_hw_params *params) 129 { 130 struct snd_interval *rate, *channels; 131 struct snd_mask *fmt; 132 133 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 134 channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); 135 fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 136 137 /* The ADSP will convert the FE rate to 48k, stereo */ 138 rate->min = rate->max = AVS_RT274_BE_FIXUP_RATE; 139 channels->min = channels->max = 2; 140 141 /* set SSPN to 24 bit */ 142 snd_mask_none(fmt); 143 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE); 144 145 return 0; 146 } 147 148 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port, 149 int tdm_slot, struct snd_soc_dai_link **dai_link) 150 { 151 struct snd_soc_dai_link_component *platform; 152 struct snd_soc_dai_link *dl; 153 154 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL); 155 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL); 156 if (!dl || !platform) 157 return -ENOMEM; 158 159 platform->name = platform_name; 160 161 dl->name = devm_kasprintf(dev, GFP_KERNEL, 162 AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot)); 163 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL); 164 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL); 165 if (!dl->name || !dl->cpus || !dl->codecs) 166 return -ENOMEM; 167 168 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, 169 AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot)); 170 dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "i2c-INT34C2:00"); 171 dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, RT274_CODEC_DAI); 172 if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name) 173 return -ENOMEM; 174 175 dl->num_cpus = 1; 176 dl->num_codecs = 1; 177 dl->platforms = platform; 178 dl->num_platforms = 1; 179 dl->id = 0; 180 dl->dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS; 181 dl->init = avs_rt274_codec_init; 182 dl->exit = avs_rt274_codec_exit; 183 dl->be_hw_params_fixup = avs_rt274_be_fixup; 184 dl->nonatomic = 1; 185 dl->no_pcm = 1; 186 dl->dpcm_capture = 1; 187 dl->dpcm_playback = 1; 188 189 *dai_link = dl; 190 191 return 0; 192 } 193 194 static int avs_card_suspend_pre(struct snd_soc_card *card) 195 { 196 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, RT274_CODEC_DAI); 197 198 return snd_soc_component_set_jack(codec_dai->component, NULL, NULL); 199 } 200 201 static int avs_card_resume_post(struct snd_soc_card *card) 202 { 203 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, RT274_CODEC_DAI); 204 struct snd_soc_jack *jack = snd_soc_card_get_drvdata(card); 205 206 return snd_soc_component_set_jack(codec_dai->component, jack, NULL); 207 } 208 209 static int avs_rt274_probe(struct platform_device *pdev) 210 { 211 struct snd_soc_dai_link *dai_link; 212 struct snd_soc_acpi_mach *mach; 213 struct snd_soc_card *card; 214 struct snd_soc_jack *jack; 215 struct device *dev = &pdev->dev; 216 const char *pname; 217 int ssp_port, tdm_slot, ret; 218 219 mach = dev_get_platdata(dev); 220 pname = mach->mach_params.platform; 221 222 ret = avs_mach_get_ssp_tdm(dev, mach, &ssp_port, &tdm_slot); 223 if (ret) 224 return ret; 225 226 ret = avs_create_dai_link(dev, pname, ssp_port, tdm_slot, &dai_link); 227 if (ret) { 228 dev_err(dev, "Failed to create dai link: %d", ret); 229 return ret; 230 } 231 232 jack = devm_kzalloc(dev, sizeof(*jack), GFP_KERNEL); 233 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 234 if (!jack || !card) 235 return -ENOMEM; 236 237 card->name = "avs_rt274"; 238 card->dev = dev; 239 card->owner = THIS_MODULE; 240 card->suspend_pre = avs_card_suspend_pre; 241 card->resume_post = avs_card_resume_post; 242 card->dai_link = dai_link; 243 card->num_links = 1; 244 card->controls = card_controls; 245 card->num_controls = ARRAY_SIZE(card_controls); 246 card->dapm_widgets = card_widgets; 247 card->num_dapm_widgets = ARRAY_SIZE(card_widgets); 248 card->dapm_routes = card_base_routes; 249 card->num_dapm_routes = ARRAY_SIZE(card_base_routes); 250 card->fully_routed = true; 251 snd_soc_card_set_drvdata(card, jack); 252 253 ret = snd_soc_fixup_dai_links_platform_name(card, pname); 254 if (ret) 255 return ret; 256 257 return devm_snd_soc_register_card(dev, card); 258 } 259 260 static const struct platform_device_id avs_rt274_driver_ids[] = { 261 { 262 .name = "avs_rt274", 263 }, 264 {}, 265 }; 266 MODULE_DEVICE_TABLE(platform, avs_rt274_driver_ids); 267 268 static struct platform_driver avs_rt274_driver = { 269 .probe = avs_rt274_probe, 270 .driver = { 271 .name = "avs_rt274", 272 .pm = &snd_soc_pm_ops, 273 }, 274 .id_table = avs_rt274_driver_ids, 275 }; 276 277 module_platform_driver(avs_rt274_driver); 278 279 MODULE_LICENSE("GPL"); 280