1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * spitz.c -- SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita 4 * 5 * Copyright 2005 Wolfson Microelectronics PLC. 6 * Copyright 2005 Openedhand Ltd. 7 * 8 * Authors: Liam Girdwood <lrg@slimlogic.co.uk> 9 * Richard Purdie <richard@openedhand.com> 10 */ 11 12 #include <linux/module.h> 13 #include <linux/moduleparam.h> 14 #include <linux/timer.h> 15 #include <linux/interrupt.h> 16 #include <linux/platform_device.h> 17 #include <linux/gpio/consumer.h> 18 #include <sound/core.h> 19 #include <sound/pcm.h> 20 #include <sound/soc.h> 21 22 #include <asm/mach-types.h> 23 #include "../codecs/wm8750.h" 24 #include "pxa2xx-i2s.h" 25 26 #define SPITZ_HP 0 27 #define SPITZ_MIC 1 28 #define SPITZ_LINE 2 29 #define SPITZ_HEADSET 3 30 #define SPITZ_HP_OFF 4 31 #define SPITZ_SPK_ON 0 32 #define SPITZ_SPK_OFF 1 33 34 /* audio clock in Hz - rounded from 12.235MHz */ 35 #define SPITZ_AUDIO_CLOCK 12288000 36 37 static int spitz_jack_func; 38 static int spitz_spk_func; 39 static struct gpio_desc *gpiod_mic, *gpiod_mute_l, *gpiod_mute_r; 40 41 static void spitz_ext_control(struct snd_soc_dapm_context *dapm) 42 { 43 snd_soc_dapm_mutex_lock(dapm); 44 45 if (spitz_spk_func == SPITZ_SPK_ON) 46 snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk"); 47 else 48 snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk"); 49 50 /* set up jack connection */ 51 switch (spitz_jack_func) { 52 case SPITZ_HP: 53 /* enable and unmute hp jack, disable mic bias */ 54 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack"); 55 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack"); 56 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack"); 57 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack"); 58 gpiod_set_value(gpiod_mute_l, 1); 59 gpiod_set_value(gpiod_mute_r, 1); 60 break; 61 case SPITZ_MIC: 62 /* enable mic jack and bias, mute hp */ 63 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack"); 64 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack"); 65 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack"); 66 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack"); 67 gpiod_set_value(gpiod_mute_l, 0); 68 gpiod_set_value(gpiod_mute_r, 0); 69 break; 70 case SPITZ_LINE: 71 /* enable line jack, disable mic bias and mute hp */ 72 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack"); 73 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack"); 74 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack"); 75 snd_soc_dapm_enable_pin_unlocked(dapm, "Line Jack"); 76 gpiod_set_value(gpiod_mute_l, 0); 77 gpiod_set_value(gpiod_mute_r, 0); 78 break; 79 case SPITZ_HEADSET: 80 /* enable and unmute headset jack enable mic bias, mute L hp */ 81 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack"); 82 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack"); 83 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack"); 84 snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack"); 85 gpiod_set_value(gpiod_mute_l, 0); 86 gpiod_set_value(gpiod_mute_r, 1); 87 break; 88 case SPITZ_HP_OFF: 89 90 /* jack removed, everything off */ 91 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack"); 92 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack"); 93 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack"); 94 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack"); 95 gpiod_set_value(gpiod_mute_l, 0); 96 gpiod_set_value(gpiod_mute_r, 0); 97 break; 98 } 99 100 snd_soc_dapm_sync_unlocked(dapm); 101 102 snd_soc_dapm_mutex_unlock(dapm); 103 } 104 105 static int spitz_startup(struct snd_pcm_substream *substream) 106 { 107 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 108 109 /* check the jack status at stream startup */ 110 spitz_ext_control(&rtd->card->dapm); 111 112 return 0; 113 } 114 115 static int spitz_hw_params(struct snd_pcm_substream *substream, 116 struct snd_pcm_hw_params *params) 117 { 118 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 119 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0); 120 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 121 unsigned int clk = 0; 122 int ret = 0; 123 124 switch (params_rate(params)) { 125 case 8000: 126 case 16000: 127 case 48000: 128 case 96000: 129 clk = 12288000; 130 break; 131 case 11025: 132 case 22050: 133 case 44100: 134 clk = 11289600; 135 break; 136 } 137 138 /* set the codec system clock for DAC and ADC */ 139 ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk, 140 SND_SOC_CLOCK_IN); 141 if (ret < 0) 142 return ret; 143 144 /* set the I2S system clock as input (unused) */ 145 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0, 146 SND_SOC_CLOCK_IN); 147 if (ret < 0) 148 return ret; 149 150 return 0; 151 } 152 153 static const struct snd_soc_ops spitz_ops = { 154 .startup = spitz_startup, 155 .hw_params = spitz_hw_params, 156 }; 157 158 static int spitz_get_jack(struct snd_kcontrol *kcontrol, 159 struct snd_ctl_elem_value *ucontrol) 160 { 161 ucontrol->value.enumerated.item[0] = spitz_jack_func; 162 return 0; 163 } 164 165 static int spitz_set_jack(struct snd_kcontrol *kcontrol, 166 struct snd_ctl_elem_value *ucontrol) 167 { 168 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); 169 170 if (spitz_jack_func == ucontrol->value.enumerated.item[0]) 171 return 0; 172 173 spitz_jack_func = ucontrol->value.enumerated.item[0]; 174 spitz_ext_control(&card->dapm); 175 return 1; 176 } 177 178 static int spitz_get_spk(struct snd_kcontrol *kcontrol, 179 struct snd_ctl_elem_value *ucontrol) 180 { 181 ucontrol->value.enumerated.item[0] = spitz_spk_func; 182 return 0; 183 } 184 185 static int spitz_set_spk(struct snd_kcontrol *kcontrol, 186 struct snd_ctl_elem_value *ucontrol) 187 { 188 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); 189 190 if (spitz_spk_func == ucontrol->value.enumerated.item[0]) 191 return 0; 192 193 spitz_spk_func = ucontrol->value.enumerated.item[0]; 194 spitz_ext_control(&card->dapm); 195 return 1; 196 } 197 198 static int spitz_mic_bias(struct snd_soc_dapm_widget *w, 199 struct snd_kcontrol *k, int event) 200 { 201 gpiod_set_value_cansleep(gpiod_mic, SND_SOC_DAPM_EVENT_ON(event)); 202 return 0; 203 } 204 205 /* spitz machine dapm widgets */ 206 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = { 207 SND_SOC_DAPM_HP("Headphone Jack", NULL), 208 SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias), 209 SND_SOC_DAPM_SPK("Ext Spk", NULL), 210 SND_SOC_DAPM_LINE("Line Jack", NULL), 211 212 /* headset is a mic and mono headphone */ 213 SND_SOC_DAPM_HP("Headset Jack", NULL), 214 }; 215 216 /* Spitz machine audio_map */ 217 static const struct snd_soc_dapm_route spitz_audio_map[] = { 218 219 /* headphone connected to LOUT1, ROUT1 */ 220 {"Headphone Jack", NULL, "LOUT1"}, 221 {"Headphone Jack", NULL, "ROUT1"}, 222 223 /* headset connected to ROUT1 and LINPUT1 with bias (def below) */ 224 {"Headset Jack", NULL, "ROUT1"}, 225 226 /* ext speaker connected to LOUT2, ROUT2 */ 227 {"Ext Spk", NULL, "ROUT2"}, 228 {"Ext Spk", NULL, "LOUT2"}, 229 230 /* mic is connected to input 1 - with bias */ 231 {"LINPUT1", NULL, "Mic Bias"}, 232 {"Mic Bias", NULL, "Mic Jack"}, 233 234 /* line is connected to input 1 - no bias */ 235 {"LINPUT1", NULL, "Line Jack"}, 236 }; 237 238 static const char * const jack_function[] = {"Headphone", "Mic", "Line", 239 "Headset", "Off"}; 240 static const char * const spk_function[] = {"On", "Off"}; 241 static const struct soc_enum spitz_enum[] = { 242 SOC_ENUM_SINGLE_EXT(5, jack_function), 243 SOC_ENUM_SINGLE_EXT(2, spk_function), 244 }; 245 246 static const struct snd_kcontrol_new wm8750_spitz_controls[] = { 247 SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack, 248 spitz_set_jack), 249 SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk, 250 spitz_set_spk), 251 }; 252 253 /* spitz digital audio interface glue - connects codec <--> CPU */ 254 SND_SOC_DAILINK_DEFS(wm8750, 255 DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-i2s")), 256 DAILINK_COMP_ARRAY(COMP_CODEC("wm8750.0-001b", "wm8750-hifi")), 257 DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio"))); 258 259 static struct snd_soc_dai_link spitz_dai = { 260 .name = "wm8750", 261 .stream_name = "WM8750", 262 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 263 SND_SOC_DAIFMT_CBS_CFS, 264 .ops = &spitz_ops, 265 SND_SOC_DAILINK_REG(wm8750), 266 }; 267 268 /* spitz audio machine driver */ 269 static struct snd_soc_card snd_soc_spitz = { 270 .name = "Spitz", 271 .owner = THIS_MODULE, 272 .dai_link = &spitz_dai, 273 .num_links = 1, 274 275 .controls = wm8750_spitz_controls, 276 .num_controls = ARRAY_SIZE(wm8750_spitz_controls), 277 .dapm_widgets = wm8750_dapm_widgets, 278 .num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets), 279 .dapm_routes = spitz_audio_map, 280 .num_dapm_routes = ARRAY_SIZE(spitz_audio_map), 281 .fully_routed = true, 282 }; 283 284 static int spitz_probe(struct platform_device *pdev) 285 { 286 struct snd_soc_card *card = &snd_soc_spitz; 287 int ret; 288 289 gpiod_mic = devm_gpiod_get(&pdev->dev, "mic", GPIOD_OUT_LOW); 290 if (IS_ERR(gpiod_mic)) 291 return PTR_ERR(gpiod_mic); 292 gpiod_mute_l = devm_gpiod_get(&pdev->dev, "mute-l", GPIOD_OUT_LOW); 293 if (IS_ERR(gpiod_mute_l)) 294 return PTR_ERR(gpiod_mute_l); 295 gpiod_mute_r = devm_gpiod_get(&pdev->dev, "mute-r", GPIOD_OUT_LOW); 296 if (IS_ERR(gpiod_mute_r)) 297 return PTR_ERR(gpiod_mute_r); 298 299 card->dev = &pdev->dev; 300 301 ret = devm_snd_soc_register_card(&pdev->dev, card); 302 if (ret) 303 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", 304 ret); 305 306 return ret; 307 } 308 309 static struct platform_driver spitz_driver = { 310 .driver = { 311 .name = "spitz-audio", 312 .pm = &snd_soc_pm_ops, 313 }, 314 .probe = spitz_probe, 315 }; 316 317 module_platform_driver(spitz_driver); 318 319 MODULE_AUTHOR("Richard Purdie"); 320 MODULE_DESCRIPTION("ALSA SoC Spitz"); 321 MODULE_LICENSE("GPL"); 322 MODULE_ALIAS("platform:spitz-audio"); 323