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_DOUBLE("Center/LFE Playback Volume", AC97_CENTER_LFE_MASTER, 8, 0, 31, 1), 89 SOC_DOUBLE("Center/LFE Playback Switch", AC97_CENTER_LFE_MASTER, 15, 7, 1, 1), 90 91 SOC_ENUM("Capture Source", ad1980_cap_src), 92 93 SOC_SINGLE("Mic Boost Switch", AC97_MIC, 6, 1, 0), 94 }; 95 96 static unsigned int ac97_read(struct snd_soc_codec *codec, 97 unsigned int reg) 98 { 99 u16 *cache = codec->reg_cache; 100 101 switch (reg) { 102 case AC97_RESET: 103 case AC97_INT_PAGING: 104 case AC97_POWERDOWN: 105 case AC97_EXTENDED_STATUS: 106 case AC97_VENDOR_ID1: 107 case AC97_VENDOR_ID2: 108 return soc_ac97_ops.read(codec->ac97, reg); 109 default: 110 reg = reg >> 1; 111 112 if (reg >= ARRAY_SIZE(ad1980_reg)) 113 return -EINVAL; 114 115 return cache[reg]; 116 } 117 } 118 119 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg, 120 unsigned int val) 121 { 122 u16 *cache = codec->reg_cache; 123 124 soc_ac97_ops.write(codec->ac97, reg, val); 125 reg = reg >> 1; 126 if (reg < ARRAY_SIZE(ad1980_reg)) 127 cache[reg] = val; 128 129 return 0; 130 } 131 132 struct snd_soc_dai ad1980_dai = { 133 .name = "AC97", 134 .ac97_control = 1, 135 .playback = { 136 .stream_name = "Playback", 137 .channels_min = 2, 138 .channels_max = 6, 139 .rates = SNDRV_PCM_RATE_48000, 140 .formats = SND_SOC_STD_AC97_FMTS, }, 141 .capture = { 142 .stream_name = "Capture", 143 .channels_min = 2, 144 .channels_max = 2, 145 .rates = SNDRV_PCM_RATE_48000, 146 .formats = SND_SOC_STD_AC97_FMTS, }, 147 }; 148 EXPORT_SYMBOL_GPL(ad1980_dai); 149 150 static int ad1980_reset(struct snd_soc_codec *codec, int try_warm) 151 { 152 u16 retry_cnt = 0; 153 154 retry: 155 if (try_warm && soc_ac97_ops.warm_reset) { 156 soc_ac97_ops.warm_reset(codec->ac97); 157 if (ac97_read(codec, AC97_RESET) == 0x0090) 158 return 1; 159 } 160 161 soc_ac97_ops.reset(codec->ac97); 162 /* Set bit 16slot in register 74h, then every slot will has only 16 163 * bits. This command is sent out in 20bit mode, in which case the 164 * first nibble of data is eaten by the addr. (Tag is always 16 bit)*/ 165 ac97_write(codec, AC97_AD_SERIAL_CFG, 0x9900); 166 167 if (ac97_read(codec, AC97_RESET) != 0x0090) 168 goto err; 169 return 0; 170 171 err: 172 while (retry_cnt++ < 10) 173 goto retry; 174 175 printk(KERN_ERR "AD1980 AC97 reset failed\n"); 176 return -EIO; 177 } 178 179 static int ad1980_soc_probe(struct platform_device *pdev) 180 { 181 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 182 struct snd_soc_codec *codec; 183 int ret = 0; 184 u16 vendor_id2; 185 u16 ext_status; 186 187 printk(KERN_INFO "AD1980 SoC Audio Codec\n"); 188 189 socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); 190 if (socdev->card->codec == NULL) 191 return -ENOMEM; 192 codec = socdev->card->codec; 193 mutex_init(&codec->mutex); 194 195 codec->reg_cache = 196 kzalloc(sizeof(u16) * ARRAY_SIZE(ad1980_reg), GFP_KERNEL); 197 if (codec->reg_cache == NULL) { 198 ret = -ENOMEM; 199 goto cache_err; 200 } 201 memcpy(codec->reg_cache, ad1980_reg, sizeof(u16) * \ 202 ARRAY_SIZE(ad1980_reg)); 203 codec->reg_cache_size = sizeof(u16) * ARRAY_SIZE(ad1980_reg); 204 codec->reg_cache_step = 2; 205 codec->name = "AD1980"; 206 codec->owner = THIS_MODULE; 207 codec->dai = &ad1980_dai; 208 codec->num_dai = 1; 209 codec->write = ac97_write; 210 codec->read = ac97_read; 211 INIT_LIST_HEAD(&codec->dapm_widgets); 212 INIT_LIST_HEAD(&codec->dapm_paths); 213 214 ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0); 215 if (ret < 0) { 216 printk(KERN_ERR "ad1980: failed to register AC97 codec\n"); 217 goto codec_err; 218 } 219 220 /* register pcms */ 221 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 222 if (ret < 0) 223 goto pcm_err; 224 225 226 ret = ad1980_reset(codec, 0); 227 if (ret < 0) { 228 printk(KERN_ERR "Failed to reset AD1980: AC97 link error\n"); 229 goto reset_err; 230 } 231 232 /* Read out vendor ID to make sure it is ad1980 */ 233 if (ac97_read(codec, AC97_VENDOR_ID1) != 0x4144) 234 goto reset_err; 235 236 vendor_id2 = ac97_read(codec, AC97_VENDOR_ID2); 237 238 if (vendor_id2 != 0x5370) { 239 if (vendor_id2 != 0x5374) 240 goto reset_err; 241 else 242 printk(KERN_WARNING "ad1980: " 243 "Found AD1981 - only 2/2 IN/OUT Channels " 244 "supported\n"); 245 } 246 247 /* unmute captures and playbacks volume */ 248 ac97_write(codec, AC97_MASTER, 0x0000); 249 ac97_write(codec, AC97_PCM, 0x0000); 250 ac97_write(codec, AC97_REC_GAIN, 0x0000); 251 ac97_write(codec, AC97_CENTER_LFE_MASTER, 0x0000); 252 ac97_write(codec, AC97_SURROUND_MASTER, 0x0000); 253 254 /*power on LFE/CENTER/Surround DACs*/ 255 ext_status = ac97_read(codec, AC97_EXTENDED_STATUS); 256 ac97_write(codec, AC97_EXTENDED_STATUS, ext_status&~0x3800); 257 258 snd_soc_add_controls(codec, ad1980_snd_ac97_controls, 259 ARRAY_SIZE(ad1980_snd_ac97_controls)); 260 261 return 0; 262 263 reset_err: 264 snd_soc_free_pcms(socdev); 265 266 pcm_err: 267 snd_soc_free_ac97_codec(codec); 268 269 codec_err: 270 kfree(codec->reg_cache); 271 272 cache_err: 273 kfree(socdev->card->codec); 274 socdev->card->codec = NULL; 275 return ret; 276 } 277 278 static int ad1980_soc_remove(struct platform_device *pdev) 279 { 280 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 281 struct snd_soc_codec *codec = socdev->card->codec; 282 283 if (codec == NULL) 284 return 0; 285 286 snd_soc_dapm_free(socdev); 287 snd_soc_free_pcms(socdev); 288 snd_soc_free_ac97_codec(codec); 289 kfree(codec->reg_cache); 290 kfree(codec); 291 return 0; 292 } 293 294 struct snd_soc_codec_device soc_codec_dev_ad1980 = { 295 .probe = ad1980_soc_probe, 296 .remove = ad1980_soc_remove, 297 }; 298 EXPORT_SYMBOL_GPL(soc_codec_dev_ad1980); 299 300 MODULE_DESCRIPTION("ASoC ad1980 driver"); 301 MODULE_AUTHOR("Roy Huang, Cliff Cai"); 302 MODULE_LICENSE("GPL"); 303