Miguel Aguilar | b56e972 | 2010-03-11 09:32:59 -0600 | [diff] [blame] | 1 | /* |
| 2 | * ALSA SoC CQ0093 Voice Codec Driver for DaVinci platforms |
| 3 | * |
| 4 | * Copyright (C) 2010 Texas Instruments, Inc |
| 5 | * |
| 6 | * Author: Miguel Aguilar <miguel.aguilar@ridgerun.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | */ |
| 22 | #include <linux/module.h> |
| 23 | #include <linux/moduleparam.h> |
| 24 | #include <linux/init.h> |
| 25 | #include <linux/io.h> |
| 26 | #include <linux/delay.h> |
| 27 | #include <linux/pm.h> |
| 28 | #include <linux/platform_device.h> |
| 29 | #include <linux/device.h> |
Tejun Heo | 923a004 | 2010-03-30 02:52:29 +0900 | [diff] [blame] | 30 | #include <linux/slab.h> |
Miguel Aguilar | b56e972 | 2010-03-11 09:32:59 -0600 | [diff] [blame] | 31 | #include <linux/clk.h> |
| 32 | #include <linux/mfd/davinci_voicecodec.h> |
| 33 | |
| 34 | #include <sound/core.h> |
| 35 | #include <sound/pcm.h> |
| 36 | #include <sound/pcm_params.h> |
| 37 | #include <sound/soc.h> |
| 38 | #include <sound/soc-dai.h> |
| 39 | #include <sound/soc-dapm.h> |
| 40 | #include <sound/initval.h> |
| 41 | |
| 42 | #include <mach/dm365.h> |
| 43 | |
| 44 | #include "cq93vc.h" |
| 45 | |
| 46 | static inline unsigned int cq93vc_read(struct snd_soc_codec *codec, |
| 47 | unsigned int reg) |
| 48 | { |
| 49 | struct davinci_vc *davinci_vc = codec->control_data; |
| 50 | |
| 51 | return readl(davinci_vc->base + reg); |
| 52 | } |
| 53 | |
| 54 | static inline int cq93vc_write(struct snd_soc_codec *codec, unsigned int reg, |
| 55 | unsigned int value) |
| 56 | { |
| 57 | struct davinci_vc *davinci_vc = codec->control_data; |
| 58 | |
| 59 | writel(value, davinci_vc->base + reg); |
| 60 | |
| 61 | return 0; |
| 62 | } |
| 63 | |
| 64 | static const struct snd_kcontrol_new cq93vc_snd_controls[] = { |
| 65 | SOC_SINGLE("PGA Capture Volume", DAVINCI_VC_REG05, 0, 0x03, 0), |
| 66 | SOC_SINGLE("Mono DAC Playback Volume", DAVINCI_VC_REG09, 0, 0x3f, 0), |
| 67 | }; |
| 68 | |
| 69 | static int cq93vc_mute(struct snd_soc_dai *dai, int mute) |
| 70 | { |
| 71 | struct snd_soc_codec *codec = dai->codec; |
| 72 | u8 reg = cq93vc_read(codec, DAVINCI_VC_REG09) & ~DAVINCI_VC_REG09_MUTE; |
| 73 | |
| 74 | if (mute) |
| 75 | cq93vc_write(codec, DAVINCI_VC_REG09, |
| 76 | reg | DAVINCI_VC_REG09_MUTE); |
| 77 | else |
| 78 | cq93vc_write(codec, DAVINCI_VC_REG09, reg); |
| 79 | |
| 80 | return 0; |
| 81 | } |
| 82 | |
| 83 | static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai, |
| 84 | int clk_id, unsigned int freq, int dir) |
| 85 | { |
| 86 | struct snd_soc_codec *codec = codec_dai->codec; |
| 87 | struct davinci_vc *davinci_vc = codec->control_data; |
| 88 | |
| 89 | switch (freq) { |
| 90 | case 22579200: |
| 91 | case 27000000: |
| 92 | case 33868800: |
| 93 | davinci_vc->cq93vc.sysclk = freq; |
| 94 | return 0; |
| 95 | } |
| 96 | |
| 97 | return -EINVAL; |
| 98 | } |
| 99 | |
| 100 | static int cq93vc_set_bias_level(struct snd_soc_codec *codec, |
| 101 | enum snd_soc_bias_level level) |
| 102 | { |
| 103 | switch (level) { |
| 104 | case SND_SOC_BIAS_ON: |
| 105 | cq93vc_write(codec, DAVINCI_VC_REG12, |
| 106 | DAVINCI_VC_REG12_POWER_ALL_ON); |
| 107 | break; |
| 108 | case SND_SOC_BIAS_PREPARE: |
| 109 | break; |
| 110 | case SND_SOC_BIAS_STANDBY: |
| 111 | cq93vc_write(codec, DAVINCI_VC_REG12, |
| 112 | DAVINCI_VC_REG12_POWER_ALL_OFF); |
| 113 | break; |
| 114 | case SND_SOC_BIAS_OFF: |
| 115 | /* force all power off */ |
| 116 | cq93vc_write(codec, DAVINCI_VC_REG12, |
| 117 | DAVINCI_VC_REG12_POWER_ALL_OFF); |
| 118 | break; |
| 119 | } |
| 120 | codec->bias_level = level; |
| 121 | |
| 122 | return 0; |
| 123 | } |
| 124 | |
| 125 | #define CQ93VC_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000) |
| 126 | #define CQ93VC_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE) |
| 127 | |
| 128 | static struct snd_soc_dai_ops cq93vc_dai_ops = { |
| 129 | .digital_mute = cq93vc_mute, |
| 130 | .set_sysclk = cq93vc_set_dai_sysclk, |
| 131 | }; |
| 132 | |
| 133 | struct snd_soc_dai cq93vc_dai = { |
| 134 | .name = "CQ93VC", |
| 135 | .playback = { |
| 136 | .stream_name = "Playback", |
| 137 | .channels_min = 1, |
| 138 | .channels_max = 2, |
| 139 | .rates = CQ93VC_RATES, |
| 140 | .formats = CQ93VC_FORMATS,}, |
| 141 | .capture = { |
| 142 | .stream_name = "Capture", |
| 143 | .channels_min = 1, |
| 144 | .channels_max = 2, |
| 145 | .rates = CQ93VC_RATES, |
| 146 | .formats = CQ93VC_FORMATS,}, |
| 147 | .ops = &cq93vc_dai_ops, |
| 148 | }; |
| 149 | EXPORT_SYMBOL_GPL(cq93vc_dai); |
| 150 | |
| 151 | static int cq93vc_resume(struct platform_device *pdev) |
| 152 | { |
| 153 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 154 | struct snd_soc_codec *codec = socdev->card->codec; |
| 155 | |
Mark Brown | 29e189c | 2010-05-07 20:30:00 +0100 | [diff] [blame] | 156 | cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
Miguel Aguilar | b56e972 | 2010-03-11 09:32:59 -0600 | [diff] [blame] | 157 | |
| 158 | return 0; |
| 159 | } |
| 160 | |
| 161 | static struct snd_soc_codec *cq93vc_codec; |
| 162 | |
| 163 | static int cq93vc_probe(struct platform_device *pdev) |
| 164 | { |
| 165 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 166 | struct device *dev = &pdev->dev; |
| 167 | struct snd_soc_codec *codec; |
| 168 | int ret; |
| 169 | |
| 170 | socdev->card->codec = cq93vc_codec; |
| 171 | codec = socdev->card->codec; |
| 172 | |
| 173 | /* Register pcms */ |
| 174 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); |
| 175 | if (ret < 0) { |
| 176 | dev_err(dev, "%s: failed to create pcms\n", pdev->name); |
| 177 | return ret; |
| 178 | } |
| 179 | |
| 180 | /* Set controls */ |
| 181 | snd_soc_add_controls(codec, cq93vc_snd_controls, |
| 182 | ARRAY_SIZE(cq93vc_snd_controls)); |
| 183 | |
| 184 | /* Off, with power on */ |
| 185 | cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| 186 | |
| 187 | return 0; |
| 188 | } |
| 189 | |
| 190 | static int cq93vc_remove(struct platform_device *pdev) |
| 191 | { |
| 192 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 193 | |
| 194 | snd_soc_free_pcms(socdev); |
| 195 | snd_soc_dapm_free(socdev); |
| 196 | |
| 197 | return 0; |
| 198 | } |
| 199 | |
| 200 | struct snd_soc_codec_device soc_codec_dev_cq93vc = { |
| 201 | .probe = cq93vc_probe, |
| 202 | .remove = cq93vc_remove, |
| 203 | .resume = cq93vc_resume, |
| 204 | }; |
| 205 | EXPORT_SYMBOL_GPL(soc_codec_dev_cq93vc); |
| 206 | |
| 207 | static __init int cq93vc_codec_probe(struct platform_device *pdev) |
| 208 | { |
| 209 | struct davinci_vc *davinci_vc = platform_get_drvdata(pdev); |
| 210 | struct snd_soc_codec *codec; |
| 211 | int ret; |
| 212 | |
| 213 | codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); |
| 214 | if (codec == NULL) { |
| 215 | dev_dbg(davinci_vc->dev, |
| 216 | "could not allocate memory for codec data\n"); |
| 217 | return -ENOMEM; |
| 218 | } |
| 219 | |
| 220 | davinci_vc->cq93vc.codec = codec; |
| 221 | |
| 222 | cq93vc_dai.dev = &pdev->dev; |
| 223 | |
| 224 | mutex_init(&codec->mutex); |
| 225 | INIT_LIST_HEAD(&codec->dapm_widgets); |
| 226 | INIT_LIST_HEAD(&codec->dapm_paths); |
| 227 | codec->dev = &pdev->dev; |
| 228 | codec->name = "CQ93VC"; |
| 229 | codec->owner = THIS_MODULE; |
| 230 | codec->read = cq93vc_read; |
| 231 | codec->write = cq93vc_write; |
| 232 | codec->set_bias_level = cq93vc_set_bias_level; |
| 233 | codec->dai = &cq93vc_dai; |
| 234 | codec->num_dai = 1; |
| 235 | codec->control_data = davinci_vc; |
| 236 | |
| 237 | cq93vc_codec = codec; |
| 238 | |
| 239 | ret = snd_soc_register_codec(codec); |
| 240 | if (ret) { |
| 241 | dev_err(davinci_vc->dev, "failed to register codec\n"); |
| 242 | goto fail1; |
| 243 | } |
| 244 | |
| 245 | ret = snd_soc_register_dai(&cq93vc_dai); |
| 246 | if (ret) { |
| 247 | dev_err(davinci_vc->dev, "could register dai\n"); |
| 248 | goto fail2; |
| 249 | } |
| 250 | return 0; |
| 251 | |
| 252 | fail2: |
| 253 | snd_soc_unregister_codec(codec); |
| 254 | |
| 255 | fail1: |
| 256 | kfree(codec); |
| 257 | cq93vc_codec = NULL; |
| 258 | |
| 259 | return ret; |
| 260 | } |
| 261 | |
| 262 | static int __devexit cq93vc_codec_remove(struct platform_device *pdev) |
| 263 | { |
| 264 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 265 | struct snd_soc_codec *codec = socdev->card->codec; |
| 266 | |
| 267 | snd_soc_unregister_dai(&cq93vc_dai); |
| 268 | snd_soc_unregister_codec(&codec); |
| 269 | |
| 270 | kfree(codec); |
| 271 | cq93vc_codec = NULL; |
| 272 | |
| 273 | return 0; |
| 274 | } |
| 275 | |
| 276 | static struct platform_driver cq93vc_codec_driver = { |
| 277 | .driver = { |
| 278 | .name = "cq93vc", |
| 279 | .owner = THIS_MODULE, |
| 280 | }, |
| 281 | .probe = cq93vc_codec_probe, |
| 282 | .remove = __devexit_p(cq93vc_codec_remove), |
| 283 | }; |
| 284 | |
| 285 | static __init int cq93vc_init(void) |
| 286 | { |
| 287 | return platform_driver_probe(&cq93vc_codec_driver, cq93vc_codec_probe); |
| 288 | } |
| 289 | module_init(cq93vc_init); |
| 290 | |
| 291 | static __exit void cq93vc_exit(void) |
| 292 | { |
| 293 | platform_driver_unregister(&cq93vc_codec_driver); |
| 294 | } |
| 295 | module_exit(cq93vc_exit); |
| 296 | |
| 297 | MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver"); |
| 298 | MODULE_AUTHOR("Miguel Aguilar"); |
| 299 | MODULE_LICENSE("GPL"); |