Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2009-2010 Nuvoton technology corporation. |
| 3 | * |
| 4 | * Wan ZongShun <mcuos.com@gmail.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation;version 2 of the License. |
| 9 | * |
| 10 | */ |
| 11 | |
| 12 | #include <linux/init.h> |
| 13 | #include <linux/module.h> |
| 14 | #include <linux/slab.h> |
| 15 | #include <linux/device.h> |
| 16 | #include <linux/delay.h> |
| 17 | #include <linux/mutex.h> |
| 18 | #include <linux/suspend.h> |
| 19 | #include <sound/core.h> |
| 20 | #include <sound/pcm.h> |
| 21 | #include <sound/initval.h> |
| 22 | #include <sound/soc.h> |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 23 | #include <linux/clk.h> |
| 24 | |
| 25 | #include <mach/mfp.h> |
| 26 | |
Wan ZongShun | 0dc3b44 | 2010-06-02 14:05:14 +0800 | [diff] [blame] | 27 | #include "nuc900-audio.h" |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 28 | |
| 29 | static DEFINE_MUTEX(ac97_mutex); |
| 30 | struct nuc900_audio *nuc900_ac97_data; |
| 31 | |
| 32 | static int nuc900_checkready(void) |
| 33 | { |
| 34 | struct nuc900_audio *nuc900_audio = nuc900_ac97_data; |
| 35 | |
| 36 | if (!(AUDIO_READ(nuc900_audio->mmio + ACTL_ACIS0) & CODEC_READY)) |
| 37 | return -EPERM; |
| 38 | |
| 39 | return 0; |
| 40 | } |
| 41 | |
| 42 | /* AC97 controller reads codec register */ |
| 43 | static unsigned short nuc900_ac97_read(struct snd_ac97 *ac97, |
| 44 | unsigned short reg) |
| 45 | { |
| 46 | struct nuc900_audio *nuc900_audio = nuc900_ac97_data; |
| 47 | unsigned long timeout = 0x10000, val; |
| 48 | |
| 49 | mutex_lock(&ac97_mutex); |
| 50 | |
| 51 | val = nuc900_checkready(); |
Axel Lin | 3f90e50 | 2010-11-29 17:43:39 +0800 | [diff] [blame] | 52 | if (val) { |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 53 | dev_err(nuc900_audio->dev, "AC97 codec is not ready\n"); |
| 54 | goto out; |
| 55 | } |
| 56 | |
| 57 | /* set the R_WB bit and write register index */ |
| 58 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS1, R_WB | reg); |
| 59 | |
| 60 | /* set the valid frame bit and valid slots */ |
| 61 | val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0); |
| 62 | val |= (VALID_FRAME | SLOT1_VALID); |
| 63 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, val); |
| 64 | |
| 65 | udelay(100); |
| 66 | |
| 67 | /* polling the AC_R_FINISH */ |
Wan ZongShun | 8dfb0c7 | 2010-06-02 14:02:33 +0800 | [diff] [blame] | 68 | while (!(AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON) & AC_R_FINISH) |
| 69 | && timeout--) |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 70 | mdelay(1); |
| 71 | |
| 72 | if (!timeout) { |
| 73 | dev_err(nuc900_audio->dev, "AC97 read register time out !\n"); |
| 74 | val = -EPERM; |
| 75 | goto out; |
| 76 | } |
| 77 | |
| 78 | val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0) ; |
| 79 | val &= ~SLOT1_VALID; |
| 80 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, val); |
| 81 | |
| 82 | if (AUDIO_READ(nuc900_audio->mmio + ACTL_ACIS1) >> 2 != reg) { |
| 83 | dev_err(nuc900_audio->dev, |
| 84 | "R_INDEX of REG_ACTL_ACIS1 not match!\n"); |
| 85 | } |
| 86 | |
| 87 | udelay(100); |
| 88 | val = (AUDIO_READ(nuc900_audio->mmio + ACTL_ACIS2) & 0xFFFF); |
| 89 | |
| 90 | out: |
| 91 | mutex_unlock(&ac97_mutex); |
| 92 | return val; |
| 93 | } |
| 94 | |
| 95 | /* AC97 controller writes to codec register */ |
| 96 | static void nuc900_ac97_write(struct snd_ac97 *ac97, unsigned short reg, |
| 97 | unsigned short val) |
| 98 | { |
| 99 | struct nuc900_audio *nuc900_audio = nuc900_ac97_data; |
| 100 | unsigned long tmp, timeout = 0x10000; |
| 101 | |
| 102 | mutex_lock(&ac97_mutex); |
| 103 | |
| 104 | tmp = nuc900_checkready(); |
Axel Lin | 3f90e50 | 2010-11-29 17:43:39 +0800 | [diff] [blame] | 105 | if (tmp) |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 106 | dev_err(nuc900_audio->dev, "AC97 codec is not ready\n"); |
| 107 | |
| 108 | /* clear the R_WB bit and write register index */ |
| 109 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS1, reg); |
| 110 | |
| 111 | /* write register value */ |
| 112 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS2, val); |
| 113 | |
| 114 | /* set the valid frame bit and valid slots */ |
| 115 | tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0); |
| 116 | tmp |= SLOT1_VALID | SLOT2_VALID | VALID_FRAME; |
| 117 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, tmp); |
| 118 | |
| 119 | udelay(100); |
| 120 | |
| 121 | /* polling the AC_W_FINISH */ |
Wan ZongShun | 8dfb0c7 | 2010-06-02 14:02:33 +0800 | [diff] [blame] | 122 | while ((AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON) & AC_W_FINISH) |
| 123 | && timeout--) |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 124 | mdelay(1); |
| 125 | |
| 126 | if (!timeout) |
| 127 | dev_err(nuc900_audio->dev, "AC97 write register time out !\n"); |
| 128 | |
| 129 | tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0); |
| 130 | tmp &= ~(SLOT1_VALID | SLOT2_VALID); |
| 131 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, tmp); |
| 132 | |
| 133 | mutex_unlock(&ac97_mutex); |
| 134 | |
| 135 | } |
| 136 | |
| 137 | static void nuc900_ac97_warm_reset(struct snd_ac97 *ac97) |
| 138 | { |
| 139 | struct nuc900_audio *nuc900_audio = nuc900_ac97_data; |
| 140 | unsigned long val; |
| 141 | |
| 142 | mutex_lock(&ac97_mutex); |
| 143 | |
| 144 | /* warm reset AC 97 */ |
| 145 | val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON); |
| 146 | val |= AC_W_RES; |
| 147 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACCON, val); |
| 148 | |
Wan ZongShun | 08a0b71 | 2010-06-02 13:57:01 +0800 | [diff] [blame] | 149 | udelay(100); |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 150 | |
| 151 | val = nuc900_checkready(); |
Axel Lin | 3f90e50 | 2010-11-29 17:43:39 +0800 | [diff] [blame] | 152 | if (val) |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 153 | dev_err(nuc900_audio->dev, "AC97 codec is not ready\n"); |
| 154 | |
| 155 | mutex_unlock(&ac97_mutex); |
| 156 | } |
| 157 | |
| 158 | static void nuc900_ac97_cold_reset(struct snd_ac97 *ac97) |
| 159 | { |
| 160 | struct nuc900_audio *nuc900_audio = nuc900_ac97_data; |
| 161 | unsigned long val; |
| 162 | |
| 163 | mutex_lock(&ac97_mutex); |
| 164 | |
| 165 | /* reset Audio Controller */ |
| 166 | val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET); |
| 167 | val |= ACTL_RESET_BIT; |
| 168 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val); |
| 169 | |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 170 | val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET); |
| 171 | val &= (~ACTL_RESET_BIT); |
| 172 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val); |
| 173 | |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 174 | /* reset AC-link interface */ |
| 175 | |
| 176 | val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET); |
| 177 | val |= AC_RESET; |
| 178 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val); |
| 179 | |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 180 | val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET); |
| 181 | val &= ~AC_RESET; |
| 182 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val); |
| 183 | |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 184 | /* cold reset AC 97 */ |
| 185 | val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON); |
| 186 | val |= AC_C_RES; |
| 187 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACCON, val); |
| 188 | |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 189 | val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON); |
| 190 | val &= (~AC_C_RES); |
| 191 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACCON, val); |
| 192 | |
Wan ZongShun | 08a0b71 | 2010-06-02 13:57:01 +0800 | [diff] [blame] | 193 | udelay(100); |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 194 | |
| 195 | mutex_unlock(&ac97_mutex); |
| 196 | |
| 197 | } |
| 198 | |
| 199 | /* AC97 controller operations */ |
| 200 | struct snd_ac97_bus_ops soc_ac97_ops = { |
| 201 | .read = nuc900_ac97_read, |
| 202 | .write = nuc900_ac97_write, |
| 203 | .reset = nuc900_ac97_cold_reset, |
| 204 | .warm_reset = nuc900_ac97_warm_reset, |
| 205 | } |
| 206 | EXPORT_SYMBOL_GPL(soc_ac97_ops); |
| 207 | |
| 208 | static int nuc900_ac97_trigger(struct snd_pcm_substream *substream, |
| 209 | int cmd, struct snd_soc_dai *dai) |
| 210 | { |
| 211 | struct nuc900_audio *nuc900_audio = nuc900_ac97_data; |
Wan ZongShun | 018334c | 2010-06-02 13:54:25 +0800 | [diff] [blame] | 212 | int ret; |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 213 | unsigned long val, tmp; |
| 214 | |
| 215 | ret = 0; |
| 216 | |
| 217 | switch (cmd) { |
| 218 | case SNDRV_PCM_TRIGGER_START: |
| 219 | case SNDRV_PCM_TRIGGER_RESUME: |
| 220 | val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET); |
Wan ZongShun | 018334c | 2010-06-02 13:54:25 +0800 | [diff] [blame] | 221 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 222 | tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0); |
| 223 | tmp |= (SLOT3_VALID | SLOT4_VALID | VALID_FRAME); |
| 224 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, tmp); |
| 225 | |
| 226 | tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_PSR); |
| 227 | tmp |= (P_DMA_END_IRQ | P_DMA_MIDDLE_IRQ); |
| 228 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_PSR, tmp); |
| 229 | val |= AC_PLAY; |
| 230 | } else { |
| 231 | tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_RSR); |
| 232 | tmp |= (R_DMA_END_IRQ | R_DMA_MIDDLE_IRQ); |
| 233 | |
| 234 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_RSR, tmp); |
| 235 | val |= AC_RECORD; |
| 236 | } |
| 237 | |
| 238 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val); |
| 239 | |
| 240 | break; |
| 241 | case SNDRV_PCM_TRIGGER_STOP: |
| 242 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 243 | val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET); |
Wan ZongShun | 018334c | 2010-06-02 13:54:25 +0800 | [diff] [blame] | 244 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 245 | tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0); |
| 246 | tmp &= ~(SLOT3_VALID | SLOT4_VALID); |
| 247 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, tmp); |
| 248 | |
| 249 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_PSR, RESET_PRSR); |
| 250 | val &= ~AC_PLAY; |
| 251 | } else { |
| 252 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_RSR, RESET_PRSR); |
| 253 | val &= ~AC_RECORD; |
| 254 | } |
| 255 | |
| 256 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val); |
| 257 | |
| 258 | break; |
| 259 | default: |
| 260 | ret = -EINVAL; |
| 261 | } |
| 262 | |
| 263 | return ret; |
| 264 | } |
| 265 | |
Axel Lin | e3edefb | 2010-11-29 17:40:05 +0800 | [diff] [blame] | 266 | static int nuc900_ac97_probe(struct snd_soc_dai *dai) |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 267 | { |
| 268 | struct nuc900_audio *nuc900_audio = nuc900_ac97_data; |
| 269 | unsigned long val; |
| 270 | |
| 271 | mutex_lock(&ac97_mutex); |
| 272 | |
| 273 | /* enable unit clock */ |
| 274 | clk_enable(nuc900_audio->clk); |
| 275 | |
| 276 | /* enable audio controller and AC-link interface */ |
| 277 | val = AUDIO_READ(nuc900_audio->mmio + ACTL_CON); |
| 278 | val |= (IIS_AC_PIN_SEL | ACLINK_EN); |
| 279 | AUDIO_WRITE(nuc900_audio->mmio + ACTL_CON, val); |
| 280 | |
| 281 | mutex_unlock(&ac97_mutex); |
| 282 | |
| 283 | return 0; |
| 284 | } |
| 285 | |
Axel Lin | e3edefb | 2010-11-29 17:40:05 +0800 | [diff] [blame] | 286 | static int nuc900_ac97_remove(struct snd_soc_dai *dai) |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 287 | { |
| 288 | struct nuc900_audio *nuc900_audio = nuc900_ac97_data; |
| 289 | |
| 290 | clk_disable(nuc900_audio->clk); |
Axel Lin | e3edefb | 2010-11-29 17:40:05 +0800 | [diff] [blame] | 291 | return 0; |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 292 | } |
| 293 | |
Lars-Peter Clausen | 85e7652 | 2011-11-23 11:40:40 +0100 | [diff] [blame] | 294 | static const struct snd_soc_dai_ops nuc900_ac97_dai_ops = { |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 295 | .trigger = nuc900_ac97_trigger, |
| 296 | }; |
| 297 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 298 | static struct snd_soc_dai_driver nuc900_ac97_dai = { |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 299 | .probe = nuc900_ac97_probe, |
| 300 | .remove = nuc900_ac97_remove, |
| 301 | .ac97_control = 1, |
| 302 | .playback = { |
| 303 | .rates = SNDRV_PCM_RATE_8000_48000, |
| 304 | .formats = SNDRV_PCM_FMTBIT_S16_LE, |
| 305 | .channels_min = 1, |
| 306 | .channels_max = 2, |
| 307 | }, |
| 308 | .capture = { |
| 309 | .rates = SNDRV_PCM_RATE_8000_48000, |
| 310 | .formats = SNDRV_PCM_FMTBIT_S16_LE, |
| 311 | .channels_min = 1, |
| 312 | .channels_max = 2, |
| 313 | }, |
| 314 | .ops = &nuc900_ac97_dai_ops, |
Axel Lin | 5a8f1d4 | 2010-11-29 17:39:10 +0800 | [diff] [blame] | 315 | }; |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 316 | |
Kuninori Morimoto | 7fc34cc | 2013-03-21 03:33:13 -0700 | [diff] [blame^] | 317 | static const struct snd_soc_component_driver nuc900_ac97_component = { |
| 318 | .name = "nuc900-ac97", |
| 319 | }; |
| 320 | |
Bill Pemberton | ce69ace | 2012-12-07 09:26:28 -0500 | [diff] [blame] | 321 | static int nuc900_ac97_drvprobe(struct platform_device *pdev) |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 322 | { |
| 323 | struct nuc900_audio *nuc900_audio; |
| 324 | int ret; |
| 325 | |
| 326 | if (nuc900_ac97_data) |
| 327 | return -EBUSY; |
| 328 | |
| 329 | nuc900_audio = kzalloc(sizeof(struct nuc900_audio), GFP_KERNEL); |
| 330 | if (!nuc900_audio) |
| 331 | return -ENOMEM; |
| 332 | |
| 333 | spin_lock_init(&nuc900_audio->lock); |
| 334 | |
| 335 | nuc900_audio->res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 336 | if (!nuc900_audio->res) { |
| 337 | ret = -ENODEV; |
| 338 | goto out0; |
| 339 | } |
| 340 | |
| 341 | if (!request_mem_region(nuc900_audio->res->start, |
| 342 | resource_size(nuc900_audio->res), pdev->name)) { |
| 343 | ret = -EBUSY; |
| 344 | goto out0; |
| 345 | } |
| 346 | |
| 347 | nuc900_audio->mmio = ioremap(nuc900_audio->res->start, |
| 348 | resource_size(nuc900_audio->res)); |
| 349 | if (!nuc900_audio->mmio) { |
| 350 | ret = -ENOMEM; |
| 351 | goto out1; |
| 352 | } |
| 353 | |
| 354 | nuc900_audio->clk = clk_get(&pdev->dev, NULL); |
| 355 | if (IS_ERR(nuc900_audio->clk)) { |
| 356 | ret = PTR_ERR(nuc900_audio->clk); |
| 357 | goto out2; |
| 358 | } |
| 359 | |
| 360 | nuc900_audio->irq_num = platform_get_irq(pdev, 0); |
| 361 | if (!nuc900_audio->irq_num) { |
| 362 | ret = -EBUSY; |
Julia Lawall | a2dc56c | 2011-06-01 19:10:05 +0200 | [diff] [blame] | 363 | goto out3; |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 364 | } |
| 365 | |
| 366 | nuc900_ac97_data = nuc900_audio; |
| 367 | |
Kuninori Morimoto | 7fc34cc | 2013-03-21 03:33:13 -0700 | [diff] [blame^] | 368 | ret = snd_soc_register_component(&pdev->dev, &nuc900_ac97_component, |
| 369 | &nuc900_ac97_dai, 1); |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 370 | if (ret) |
| 371 | goto out3; |
| 372 | |
Axel Lin | 97371fa | 2011-11-25 00:23:28 +0100 | [diff] [blame] | 373 | /* enbale ac97 multifunction pin */ |
Axel Lin | e37051d | 2012-01-09 10:54:59 +0100 | [diff] [blame] | 374 | mfp_set_groupg(nuc900_audio->dev, NULL); |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 375 | |
| 376 | return 0; |
| 377 | |
| 378 | out3: |
| 379 | clk_put(nuc900_audio->clk); |
| 380 | out2: |
| 381 | iounmap(nuc900_audio->mmio); |
| 382 | out1: |
| 383 | release_mem_region(nuc900_audio->res->start, |
| 384 | resource_size(nuc900_audio->res)); |
| 385 | out0: |
| 386 | kfree(nuc900_audio); |
| 387 | return ret; |
| 388 | } |
| 389 | |
Bill Pemberton | ce69ace | 2012-12-07 09:26:28 -0500 | [diff] [blame] | 390 | static int nuc900_ac97_drvremove(struct platform_device *pdev) |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 391 | { |
Kuninori Morimoto | 7fc34cc | 2013-03-21 03:33:13 -0700 | [diff] [blame^] | 392 | snd_soc_unregister_component(&pdev->dev); |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 393 | |
| 394 | clk_put(nuc900_ac97_data->clk); |
| 395 | iounmap(nuc900_ac97_data->mmio); |
| 396 | release_mem_region(nuc900_ac97_data->res->start, |
| 397 | resource_size(nuc900_ac97_data->res)); |
| 398 | |
Axel Lin | d6f443a | 2010-11-24 16:44:23 +0800 | [diff] [blame] | 399 | kfree(nuc900_ac97_data); |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 400 | nuc900_ac97_data = NULL; |
| 401 | |
| 402 | return 0; |
| 403 | } |
| 404 | |
| 405 | static struct platform_driver nuc900_ac97_driver = { |
| 406 | .driver = { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 407 | .name = "nuc900-ac97", |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 408 | .owner = THIS_MODULE, |
| 409 | }, |
| 410 | .probe = nuc900_ac97_drvprobe, |
Bill Pemberton | ce69ace | 2012-12-07 09:26:28 -0500 | [diff] [blame] | 411 | .remove = nuc900_ac97_drvremove, |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 412 | }; |
| 413 | |
Axel Lin | d0efa6a | 2011-11-24 10:45:32 +0800 | [diff] [blame] | 414 | module_platform_driver(nuc900_ac97_driver); |
Wan ZongShun | 1082e27 | 2010-05-18 13:41:46 +0800 | [diff] [blame] | 415 | |
| 416 | MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>"); |
| 417 | MODULE_DESCRIPTION("NUC900 AC97 SoC driver!"); |
| 418 | MODULE_LICENSE("GPL"); |
| 419 | MODULE_ALIAS("platform:nuc900-ac97"); |