1 /* 2 * ad1980.c -- ALSA Soc AD1980 codec support 3 * 4 * Copyright: Analog Device Inc. 5 * Author: Roy Huang <roy.huang@analog.com> 6 * Cliff Cai <cliff.cai@analog.com> 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by the 10 * Free Software Foundation; either version 2 of the License, or (at your 11 * option) any later version. 12 */ 13 14 #include <linux/init.h> 15 #include <linux/module.h> 16 #include <linux/kernel.h> 17 #include <linux/device.h> 18 #include <sound/core.h> 19 #include <sound/pcm.h> 20 #include <sound/ac97_codec.h> 21 #include <sound/initval.h> 22 #include <sound/soc.h> 23 #include <sound/soc-dapm.h> 24 25 #include "ad1980.h" 26 27 static unsigned int ac97_read(struct snd_soc_codec *codec, 28 unsigned int reg); 29 static int ac97_write(struct snd_soc_codec *codec, 30 unsigned int reg, unsigned int val); 31 32 /* 33 * AD1980 register cache 34 */ 35 static const u16 ad1980_reg[] = { 36 0x0090, 0x8000, 0x8000, 0x8000, /* 0 - 6 */ 37 0x0000, 0x0000, 0x8008, 0x8008, /* 8 - e */ 38 0x8808, 0x8808, 0x0000, 0x8808, /* 10 - 16 */ 39 0x8808, 0x0000, 0x8000, 0x0000, /* 18 - 1e */ 40 0x0000, 0x0000, 0x0000, 0x0000, /* 20 - 26 */ 41 0x03c7, 0x0000, 0xbb80, 0xbb80, /* 28 - 2e */ 42 0xbb80, 0xbb80, 0x0000, 0x8080, /* 30 - 36 */ 43 0x8080, 0x2000, 0x0000, 0x0000, /* 38 - 3e */ 44 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */ 45 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */ 46 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */ 47 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */ 48 0x8080, 0x0000, 0x0000, 0x0000, /* 60 - 66 */ 49 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */ 50 0x0000, 0x0000, 0x1001, 0x0000, /* 70 - 76 */ 51 0x0000, 0x0000, 0x4144, 0x5370 /* 78 - 7e */ 52 }; 53 54 static const char *ad1980_rec_sel[] = {"Mic", "CD", "NC", "AUX", "Line", 55 "Stereo Mix", "Mono Mix", "Phone"}; 56 57 static const struct soc_enum ad1980_cap_src = 58 SOC_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 7, ad1980_rec_sel); 59 60 static const struct snd_kcontrol_new ad1980_snd_ac97_controls[] = { 61 SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1), 62 SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1), 63 64 SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1), 65 SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1), 66 67 SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1), 68 SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1), 69 70 SOC_DOUBLE("PCM Capture Volume", AC97_REC_GAIN, 8, 0, 31, 0), 71 SOC_SINGLE("PCM Capture Switch", AC97_REC_GAIN, 15, 1, 1), 72 73 SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1), 74 SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1), 75 76 SOC_SINGLE("Phone Capture Volume", AC97_PHONE, 0, 31, 1), 77 SOC_SINGLE("Phone Capture Switch", AC97_PHONE, 15, 1, 1), 78 79 SOC_SINGLE("Mic Volume", AC97_MIC, 0, 31, 1), 80 SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1), 81 82 SOC_SINGLE("Stereo Mic Switch", AC97_AD_MISC, 6, 1, 0), 83 SOC_DOUBLE("Line HP Swap Switch", AC97_AD_MISC, 10, 5, 1, 0), 84 85 SOC_DOUBLE("Surround Playback Volume", AC97_SURROUND_MASTER, 8, 0, 31, 1), 86 SOC_DOUBLE("Surround Playback Switch", AC97_SURROUND_MASTER, 15, 7, 1, 1), 87 88 SOC_ENUM("Capture Source", ad1980_cap_src), 89 90 SOC_SINGLE("Mic Boost Switch", AC97_MIC, 6, 1, 0), 91 }; 92 93 /* add non dapm controls */ 94 static int ad1980_add_controls(struct snd_soc_codec *codec) 95 { 96 int err, i; 97 98 for (i = 0; i < ARRAY_SIZE(ad1980_snd_ac97_controls); i++) { 99 err = snd_ctl_add(codec->card, snd_soc_cnew( 100 &ad1980_snd_ac97_controls[i], codec, NULL)); 101 if (err < 0) 102 return err; 103 } 104 return 0; 105 } 106 107 static unsigned int ac97_read(struct snd_soc_codec *codec, 108 unsigned int reg) 109 { 110 u16 *cache = codec->reg_cache; 111 112 switch (reg) { 113 case AC97_RESET: 114 case AC97_INT_PAGING: 115 case AC97_POWERDOWN: 116 case AC97_EXTENDED_STATUS: 117 case AC97_VENDOR_ID1: 118 case AC97_VENDOR_ID2: 119 return soc_ac97_ops.read(codec->ac97, reg); 120 default: 121 reg = reg >> 1; 122 123 if (reg >= (ARRAY_SIZE(ad1980_reg))) 124 return -EINVAL; 125 126 return cache[reg]; 127 } 128 } 129 130 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg, 131 unsigned int val) 132 { 133 u16 *cache = codec->reg_cache; 134 135 soc_ac97_ops.write(codec->ac97, reg, val); 136 reg = reg >> 1; 137 if (reg < (ARRAY_SIZE(ad1980_reg))) 138 cache[reg] = val; 139 140 return 0; 141 } 142 143 struct snd_soc_dai ad1980_dai = { 144 .name = "AC97", 145 .playback = { 146 .stream_name = "Playback", 147 .channels_min = 2, 148 .channels_max = 2, 149 .rates = SNDRV_PCM_RATE_48000, 150 .formats = SNDRV_PCM_FMTBIT_S16_LE, }, 151 .capture = { 152 .stream_name = "Capture", 153 .channels_min = 2, 154 .channels_max = 2, 155 .rates = SNDRV_PCM_RATE_48000, 156 .formats = SNDRV_PCM_FMTBIT_S16_LE, }, 157 }; 158 EXPORT_SYMBOL_GPL(ad1980_dai); 159 160 static int ad1980_reset(struct snd_soc_codec *codec, int try_warm) 161 { 162 u16 retry_cnt = 0; 163 164 retry: 165 if (try_warm && soc_ac97_ops.warm_reset) { 166 soc_ac97_ops.warm_reset(codec->ac97); 167 if (ac97_read(codec, AC97_RESET) == 0x0090) 168 return 1; 169 } 170 171 soc_ac97_ops.reset(codec->ac97); 172 /* Set bit 16slot in register 74h, then every slot will has only 16 173 * bits. This command is sent out in 20bit mode, in which case the 174 * first nibble of data is eaten by the addr. (Tag is always 16 bit)*/ 175 ac97_write(codec, AC97_AD_SERIAL_CFG, 0x9900); 176 177 if (ac97_read(codec, AC97_RESET) != 0x0090) 178 goto err; 179 return 0; 180 181 err: 182 while (retry_cnt++ < 10) 183 goto retry; 184 185 printk(KERN_ERR "AD1980 AC97 reset failed\n"); 186 return -EIO; 187 } 188 189 static int ad1980_soc_probe(struct platform_device *pdev) 190 { 191 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 192 struct snd_soc_codec *codec; 193 int ret = 0; 194 u16 vendor_id2; 195 196 printk(KERN_INFO "AD1980 SoC Audio Codec\n"); 197 198 socdev->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); 199 if (socdev->codec == NULL) 200 return -ENOMEM; 201 codec = socdev->codec; 202 mutex_init(&codec->mutex); 203 204 codec->reg_cache = 205 kzalloc(sizeof(u16) * ARRAY_SIZE(ad1980_reg), GFP_KERNEL); 206 if (codec->reg_cache == NULL) { 207 ret = -ENOMEM; 208 goto cache_err; 209 } 210 memcpy(codec->reg_cache, ad1980_reg, sizeof(u16) * \ 211 ARRAY_SIZE(ad1980_reg)); 212 codec->reg_cache_size = sizeof(u16) * ARRAY_SIZE(ad1980_reg); 213 codec->reg_cache_step = 2; 214 codec->name = "AD1980"; 215 codec->owner = THIS_MODULE; 216 codec->dai = &ad1980_dai; 217 codec->num_dai = 1; 218 codec->write = ac97_write; 219 codec->read = ac97_read; 220 INIT_LIST_HEAD(&codec->dapm_widgets); 221 INIT_LIST_HEAD(&codec->dapm_paths); 222 223 ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0); 224 if (ret < 0) { 225 printk(KERN_ERR "ad1980: failed to register AC97 codec\n"); 226 goto codec_err; 227 } 228 229 /* register pcms */ 230 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 231 if (ret < 0) 232 goto pcm_err; 233 234 235 ret = ad1980_reset(codec, 0); 236 if (ret < 0) { 237 printk(KERN_ERR "AC97 link error\n"); 238 goto reset_err; 239 } 240 241 /* Read out vendor ID to make sure it is ad1980 */ 242 if (ac97_read(codec, AC97_VENDOR_ID1) != 0x4144) 243 goto reset_err; 244 245 vendor_id2 = ac97_read(codec, AC97_VENDOR_ID2); 246 247 if (vendor_id2 != 0x5370) { 248 if (vendor_id2 != 0x5374) 249 goto reset_err; 250 else 251 printk(KERN_WARNING "ad1980: " 252 "Found AD1981 - only 2/2 IN/OUT Channels " 253 "supported\n"); 254 } 255 256 ac97_write(codec, AC97_MASTER, 0x0000); /* unmute line out volume */ 257 ac97_write(codec, AC97_PCM, 0x0000); /* unmute PCM out volume */ 258 ac97_write(codec, AC97_REC_GAIN, 0x0000);/* unmute record volume */ 259 260 ad1980_add_controls(codec); 261 ret = snd_soc_register_card(socdev); 262 if (ret < 0) { 263 printk(KERN_ERR "ad1980: failed to register card\n"); 264 goto reset_err; 265 } 266 267 return 0; 268 269 reset_err: 270 snd_soc_free_pcms(socdev); 271 272 pcm_err: 273 snd_soc_free_ac97_codec(codec); 274 275 codec_err: 276 kfree(codec->reg_cache); 277 278 cache_err: 279 kfree(socdev->codec); 280 socdev->codec = NULL; 281 return ret; 282 } 283 284 static int ad1980_soc_remove(struct platform_device *pdev) 285 { 286 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 287 struct snd_soc_codec *codec = socdev->codec; 288 289 if (codec == NULL) 290 return 0; 291 292 snd_soc_dapm_free(socdev); 293 snd_soc_free_pcms(socdev); 294 snd_soc_free_ac97_codec(codec); 295 kfree(codec->reg_cache); 296 kfree(codec); 297 return 0; 298 } 299 300 struct snd_soc_codec_device soc_codec_dev_ad1980 = { 301 .probe = ad1980_soc_probe, 302 .remove = ad1980_soc_remove, 303 }; 304 EXPORT_SYMBOL_GPL(soc_codec_dev_ad1980); 305 306 MODULE_DESCRIPTION("ASoC ad1980 driver"); 307 MODULE_AUTHOR("Roy Huang, Cliff Cai"); 308 MODULE_LICENSE("GPL"); 309