1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2015 The Linux Foundation. All rights reserved. 4 */ 5 6 #include <linux/device.h> 7 #include <linux/module.h> 8 #include <linux/kernel.h> 9 #include <linux/io.h> 10 #include <linux/of.h> 11 #include <linux/clk.h> 12 #include <linux/platform_device.h> 13 #include <sound/pcm.h> 14 #include <sound/pcm_params.h> 15 #include <sound/jack.h> 16 #include <sound/soc.h> 17 #include <uapi/linux/input-event-codes.h> 18 #include <dt-bindings/sound/apq8016-lpass.h> 19 #include "common.h" 20 #include "qdsp6/q6afe.h" 21 22 #define MI2S_COUNT (MI2S_QUATERNARY + 1) 23 24 struct apq8016_sbc_data { 25 struct snd_soc_card card; 26 void __iomem *mic_iomux; 27 void __iomem *spkr_iomux; 28 struct snd_soc_jack jack; 29 bool jack_setup; 30 int mi2s_clk_count[MI2S_COUNT]; 31 }; 32 33 #define MIC_CTRL_TER_WS_SLAVE_SEL BIT(21) 34 #define MIC_CTRL_QUA_WS_SLAVE_SEL_10 BIT(17) 35 #define MIC_CTRL_TLMM_SCLK_EN BIT(1) 36 #define SPKR_CTL_PRI_WS_SLAVE_SEL_11 (BIT(17) | BIT(16)) 37 #define SPKR_CTL_TLMM_MCLK_EN BIT(1) 38 #define SPKR_CTL_TLMM_SCLK_EN BIT(2) 39 #define SPKR_CTL_TLMM_DATA1_EN BIT(3) 40 #define SPKR_CTL_TLMM_WS_OUT_SEL_MASK GENMASK(7, 6) 41 #define SPKR_CTL_TLMM_WS_OUT_SEL_SEC BIT(6) 42 #define SPKR_CTL_TLMM_WS_EN_SEL_MASK GENMASK(19, 18) 43 #define SPKR_CTL_TLMM_WS_EN_SEL_SEC BIT(18) 44 #define DEFAULT_MCLK_RATE 9600000 45 #define MI2S_BCLK_RATE 1536000 46 47 static struct snd_soc_jack_pin apq8016_sbc_jack_pins[] = { 48 { 49 .pin = "Mic Jack", 50 .mask = SND_JACK_MICROPHONE, 51 }, 52 { 53 .pin = "Headphone Jack", 54 .mask = SND_JACK_HEADPHONE, 55 }, 56 }; 57 58 static int apq8016_dai_init(struct snd_soc_pcm_runtime *rtd, int mi2s) 59 { 60 struct snd_soc_dai *codec_dai; 61 struct snd_soc_component *component; 62 struct snd_soc_card *card = rtd->card; 63 struct apq8016_sbc_data *pdata = snd_soc_card_get_drvdata(card); 64 int i, rval; 65 u32 value; 66 67 switch (mi2s) { 68 case MI2S_PRIMARY: 69 writel(readl(pdata->spkr_iomux) | SPKR_CTL_PRI_WS_SLAVE_SEL_11, 70 pdata->spkr_iomux); 71 break; 72 73 case MI2S_QUATERNARY: 74 /* Configure the Quat MI2S to TLMM */ 75 writel(readl(pdata->mic_iomux) | MIC_CTRL_QUA_WS_SLAVE_SEL_10 | 76 MIC_CTRL_TLMM_SCLK_EN, 77 pdata->mic_iomux); 78 break; 79 case MI2S_SECONDARY: 80 /* Clear TLMM_WS_OUT_SEL and TLMM_WS_EN_SEL fields */ 81 value = readl(pdata->spkr_iomux) & 82 ~(SPKR_CTL_TLMM_WS_OUT_SEL_MASK | SPKR_CTL_TLMM_WS_EN_SEL_MASK); 83 /* Configure the Sec MI2S to TLMM */ 84 writel(value | SPKR_CTL_TLMM_MCLK_EN | SPKR_CTL_TLMM_SCLK_EN | 85 SPKR_CTL_TLMM_DATA1_EN | SPKR_CTL_TLMM_WS_OUT_SEL_SEC | 86 SPKR_CTL_TLMM_WS_EN_SEL_SEC, pdata->spkr_iomux); 87 break; 88 case MI2S_TERTIARY: 89 writel(readl(pdata->mic_iomux) | MIC_CTRL_TER_WS_SLAVE_SEL | 90 MIC_CTRL_TLMM_SCLK_EN, 91 pdata->mic_iomux); 92 93 break; 94 95 default: 96 dev_err(card->dev, "unsupported cpu dai configuration\n"); 97 return -EINVAL; 98 99 } 100 101 if (!pdata->jack_setup) { 102 struct snd_jack *jack; 103 104 rval = snd_soc_card_jack_new_pins(card, "Headset Jack", 105 SND_JACK_HEADSET | 106 SND_JACK_HEADPHONE | 107 SND_JACK_BTN_0 | SND_JACK_BTN_1 | 108 SND_JACK_BTN_2 | SND_JACK_BTN_3 | 109 SND_JACK_BTN_4, 110 &pdata->jack, 111 apq8016_sbc_jack_pins, 112 ARRAY_SIZE(apq8016_sbc_jack_pins)); 113 114 if (rval < 0) { 115 dev_err(card->dev, "Unable to add Headphone Jack\n"); 116 return rval; 117 } 118 119 jack = pdata->jack.jack; 120 121 snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE); 122 snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND); 123 snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP); 124 snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN); 125 pdata->jack_setup = true; 126 } 127 128 for_each_rtd_codec_dais(rtd, i, codec_dai) { 129 130 component = codec_dai->component; 131 /* Set default mclk for internal codec */ 132 rval = snd_soc_component_set_sysclk(component, 0, 0, DEFAULT_MCLK_RATE, 133 SND_SOC_CLOCK_IN); 134 if (rval != 0 && rval != -ENOTSUPP) { 135 dev_warn(card->dev, "Failed to set mclk: %d\n", rval); 136 return rval; 137 } 138 rval = snd_soc_component_set_jack(component, &pdata->jack, NULL); 139 if (rval != 0 && rval != -ENOTSUPP) { 140 dev_warn(card->dev, "Failed to set jack: %d\n", rval); 141 return rval; 142 } 143 } 144 145 return 0; 146 } 147 148 static int apq8016_sbc_dai_init(struct snd_soc_pcm_runtime *rtd) 149 { 150 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 151 152 return apq8016_dai_init(rtd, cpu_dai->id); 153 } 154 155 static void apq8016_sbc_add_ops(struct snd_soc_card *card) 156 { 157 struct snd_soc_dai_link *link; 158 int i; 159 160 for_each_card_prelinks(card, i, link) 161 link->init = apq8016_sbc_dai_init; 162 } 163 164 static int qdsp6_dai_get_lpass_id(struct snd_soc_dai *cpu_dai) 165 { 166 switch (cpu_dai->id) { 167 case PRIMARY_MI2S_RX: 168 case PRIMARY_MI2S_TX: 169 return MI2S_PRIMARY; 170 case SECONDARY_MI2S_RX: 171 case SECONDARY_MI2S_TX: 172 return MI2S_SECONDARY; 173 case TERTIARY_MI2S_RX: 174 case TERTIARY_MI2S_TX: 175 return MI2S_TERTIARY; 176 case QUATERNARY_MI2S_RX: 177 case QUATERNARY_MI2S_TX: 178 return MI2S_QUATERNARY; 179 default: 180 return -EINVAL; 181 } 182 } 183 184 static int msm8916_qdsp6_dai_init(struct snd_soc_pcm_runtime *rtd) 185 { 186 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 187 188 snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_BP_FP); 189 return apq8016_dai_init(rtd, qdsp6_dai_get_lpass_id(cpu_dai)); 190 } 191 192 static int msm8916_qdsp6_startup(struct snd_pcm_substream *substream) 193 { 194 struct snd_soc_pcm_runtime *rtd = substream->private_data; 195 struct snd_soc_card *card = rtd->card; 196 struct apq8016_sbc_data *data = snd_soc_card_get_drvdata(card); 197 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 198 int mi2s, ret; 199 200 mi2s = qdsp6_dai_get_lpass_id(cpu_dai); 201 if (mi2s < 0) 202 return mi2s; 203 204 if (++data->mi2s_clk_count[mi2s] > 1) 205 return 0; 206 207 ret = snd_soc_dai_set_sysclk(cpu_dai, LPAIF_BIT_CLK, MI2S_BCLK_RATE, 0); 208 if (ret) 209 dev_err(card->dev, "Failed to enable LPAIF bit clk: %d\n", ret); 210 return ret; 211 } 212 213 static void msm8916_qdsp6_shutdown(struct snd_pcm_substream *substream) 214 { 215 struct snd_soc_pcm_runtime *rtd = substream->private_data; 216 struct snd_soc_card *card = rtd->card; 217 struct apq8016_sbc_data *data = snd_soc_card_get_drvdata(card); 218 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 219 int mi2s, ret; 220 221 mi2s = qdsp6_dai_get_lpass_id(cpu_dai); 222 if (mi2s < 0) 223 return; 224 225 if (--data->mi2s_clk_count[mi2s] > 0) 226 return; 227 228 ret = snd_soc_dai_set_sysclk(cpu_dai, LPAIF_BIT_CLK, 0, 0); 229 if (ret) 230 dev_err(card->dev, "Failed to disable LPAIF bit clk: %d\n", ret); 231 } 232 233 static const struct snd_soc_ops msm8916_qdsp6_be_ops = { 234 .startup = msm8916_qdsp6_startup, 235 .shutdown = msm8916_qdsp6_shutdown, 236 }; 237 238 static int msm8916_qdsp6_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, 239 struct snd_pcm_hw_params *params) 240 { 241 struct snd_interval *rate = hw_param_interval(params, 242 SNDRV_PCM_HW_PARAM_RATE); 243 struct snd_interval *channels = hw_param_interval(params, 244 SNDRV_PCM_HW_PARAM_CHANNELS); 245 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 246 247 rate->min = rate->max = 48000; 248 channels->min = channels->max = 2; 249 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); 250 251 return 0; 252 } 253 254 static void msm8916_qdsp6_add_ops(struct snd_soc_card *card) 255 { 256 struct snd_soc_dai_link *link; 257 int i; 258 259 /* Make it obvious to userspace that QDSP6 is used */ 260 card->components = "qdsp6"; 261 262 for_each_card_prelinks(card, i, link) { 263 if (link->no_pcm) { 264 link->init = msm8916_qdsp6_dai_init; 265 link->ops = &msm8916_qdsp6_be_ops; 266 link->be_hw_params_fixup = msm8916_qdsp6_be_hw_params_fixup; 267 } 268 } 269 } 270 271 static const struct snd_kcontrol_new apq8016_sbc_snd_controls[] = { 272 SOC_DAPM_PIN_SWITCH("Headphone Jack"), 273 SOC_DAPM_PIN_SWITCH("Mic Jack"), 274 }; 275 276 static const struct snd_soc_dapm_widget apq8016_sbc_dapm_widgets[] = { 277 SND_SOC_DAPM_HP("Headphone Jack", NULL), 278 SND_SOC_DAPM_MIC("Mic Jack", NULL), 279 SND_SOC_DAPM_MIC("Handset Mic", NULL), 280 SND_SOC_DAPM_MIC("Headset Mic", NULL), 281 SND_SOC_DAPM_MIC("Secondary Mic", NULL), 282 SND_SOC_DAPM_MIC("Digital Mic1", NULL), 283 SND_SOC_DAPM_MIC("Digital Mic2", NULL), 284 }; 285 286 static int apq8016_sbc_platform_probe(struct platform_device *pdev) 287 { 288 void (*add_ops)(struct snd_soc_card *card); 289 struct device *dev = &pdev->dev; 290 struct snd_soc_card *card; 291 struct apq8016_sbc_data *data; 292 int ret; 293 294 add_ops = device_get_match_data(&pdev->dev); 295 if (!add_ops) 296 return -EINVAL; 297 298 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); 299 if (!data) 300 return -ENOMEM; 301 302 card = &data->card; 303 card->dev = dev; 304 card->owner = THIS_MODULE; 305 card->dapm_widgets = apq8016_sbc_dapm_widgets; 306 card->num_dapm_widgets = ARRAY_SIZE(apq8016_sbc_dapm_widgets); 307 card->controls = apq8016_sbc_snd_controls; 308 card->num_controls = ARRAY_SIZE(apq8016_sbc_snd_controls); 309 310 ret = qcom_snd_parse_of(card); 311 if (ret) 312 return ret; 313 314 data->mic_iomux = devm_platform_ioremap_resource_byname(pdev, "mic-iomux"); 315 if (IS_ERR(data->mic_iomux)) 316 return PTR_ERR(data->mic_iomux); 317 318 data->spkr_iomux = devm_platform_ioremap_resource_byname(pdev, "spkr-iomux"); 319 if (IS_ERR(data->spkr_iomux)) 320 return PTR_ERR(data->spkr_iomux); 321 322 snd_soc_card_set_drvdata(card, data); 323 324 add_ops(card); 325 return devm_snd_soc_register_card(&pdev->dev, card); 326 } 327 328 static const struct of_device_id apq8016_sbc_device_id[] __maybe_unused = { 329 { .compatible = "qcom,apq8016-sbc-sndcard", .data = apq8016_sbc_add_ops }, 330 { .compatible = "qcom,msm8916-qdsp6-sndcard", .data = msm8916_qdsp6_add_ops }, 331 {}, 332 }; 333 MODULE_DEVICE_TABLE(of, apq8016_sbc_device_id); 334 335 static struct platform_driver apq8016_sbc_platform_driver = { 336 .driver = { 337 .name = "qcom-apq8016-sbc", 338 .of_match_table = of_match_ptr(apq8016_sbc_device_id), 339 }, 340 .probe = apq8016_sbc_platform_probe, 341 }; 342 module_platform_driver(apq8016_sbc_platform_driver); 343 344 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org"); 345 MODULE_DESCRIPTION("APQ8016 ASoC Machine Driver"); 346 MODULE_LICENSE("GPL v2"); 347