Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * au1550_ac97.c -- Sound driver for Alchemy Au1550 MIPS Internet Edge |
| 3 | * Processor. |
| 4 | * |
| 5 | * Copyright 2004 Embedded Edge, LLC |
| 6 | * dan@embeddededge.com |
| 7 | * |
| 8 | * Mostly copied from the au1000.c driver and some from the |
| 9 | * PowerMac dbdma driver. |
| 10 | * We assume the processor can do memory coherent DMA. |
| 11 | * |
| 12 | * Ported to 2.6 by Matt Porter <mporter@kernel.crashing.org> |
| 13 | * |
| 14 | * This program is free software; you can redistribute it and/or modify it |
| 15 | * under the terms of the GNU General Public License as published by the |
| 16 | * Free Software Foundation; either version 2 of the License, or (at your |
| 17 | * option) any later version. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 20 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 21 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN |
| 22 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 24 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| 25 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| 26 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 27 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 28 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 | * |
| 30 | * You should have received a copy of the GNU General Public License along |
| 31 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 32 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 33 | * |
| 34 | */ |
| 35 | |
| 36 | #undef DEBUG |
| 37 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include <linux/module.h> |
| 39 | #include <linux/string.h> |
| 40 | #include <linux/ioport.h> |
| 41 | #include <linux/sched.h> |
| 42 | #include <linux/delay.h> |
| 43 | #include <linux/sound.h> |
| 44 | #include <linux/slab.h> |
| 45 | #include <linux/soundcard.h> |
| 46 | #include <linux/init.h> |
| 47 | #include <linux/interrupt.h> |
| 48 | #include <linux/kernel.h> |
| 49 | #include <linux/poll.h> |
| 50 | #include <linux/pci.h> |
| 51 | #include <linux/bitops.h> |
| 52 | #include <linux/spinlock.h> |
| 53 | #include <linux/smp_lock.h> |
| 54 | #include <linux/ac97_codec.h> |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 55 | #include <linux/mutex.h> |
| 56 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | #include <asm/io.h> |
| 58 | #include <asm/uaccess.h> |
| 59 | #include <asm/hardirq.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | #include <asm/mach-au1x00/au1xxx_psc.h> |
| 61 | #include <asm/mach-au1x00/au1xxx_dbdma.h> |
Sergei Shtylyov | f2c780c | 2006-06-23 02:04:13 -0700 | [diff] [blame^] | 62 | #include <asm/mach-au1x00/au1xxx.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
| 64 | #undef OSS_DOCUMENTED_MIXER_SEMANTICS |
| 65 | |
| 66 | /* misc stuff */ |
| 67 | #define POLL_COUNT 0x50000 |
| 68 | #define AC97_EXT_DACS (AC97_EXTID_SDAC | AC97_EXTID_CDAC | AC97_EXTID_LDAC) |
| 69 | |
| 70 | /* The number of DBDMA ring descriptors to allocate. No sense making |
| 71 | * this too large....if you can't keep up with a few you aren't likely |
| 72 | * to be able to with lots of them, either. |
| 73 | */ |
| 74 | #define NUM_DBDMA_DESCRIPTORS 4 |
| 75 | |
| 76 | #define err(format, arg...) printk(KERN_ERR format "\n" , ## arg) |
| 77 | |
| 78 | /* Boot options |
| 79 | * 0 = no VRA, 1 = use VRA if codec supports it |
| 80 | */ |
| 81 | static int vra = 1; |
Rusty Russell | 8d3b33f | 2006-03-25 03:07:05 -0800 | [diff] [blame] | 82 | module_param(vra, bool, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | MODULE_PARM_DESC(vra, "if 1 use VRA if codec supports it"); |
| 84 | |
| 85 | static struct au1550_state { |
| 86 | /* soundcore stuff */ |
| 87 | int dev_audio; |
| 88 | |
| 89 | struct ac97_codec *codec; |
| 90 | unsigned codec_base_caps; /* AC'97 reg 00h, "Reset Register" */ |
| 91 | unsigned codec_ext_caps; /* AC'97 reg 28h, "Extended Audio ID" */ |
| 92 | int no_vra; /* do not use VRA */ |
| 93 | |
| 94 | spinlock_t lock; |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 95 | struct mutex open_mutex; |
| 96 | struct mutex sem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | mode_t open_mode; |
| 98 | wait_queue_head_t open_wait; |
| 99 | |
| 100 | struct dmabuf { |
| 101 | u32 dmanr; |
| 102 | unsigned sample_rate; |
| 103 | unsigned src_factor; |
| 104 | unsigned sample_size; |
| 105 | int num_channels; |
| 106 | int dma_bytes_per_sample; |
| 107 | int user_bytes_per_sample; |
| 108 | int cnt_factor; |
| 109 | |
| 110 | void *rawbuf; |
| 111 | unsigned buforder; |
| 112 | unsigned numfrag; |
| 113 | unsigned fragshift; |
| 114 | void *nextIn; |
| 115 | void *nextOut; |
| 116 | int count; |
| 117 | unsigned total_bytes; |
| 118 | unsigned error; |
| 119 | wait_queue_head_t wait; |
| 120 | |
| 121 | /* redundant, but makes calculations easier */ |
| 122 | unsigned fragsize; |
| 123 | unsigned dma_fragsize; |
| 124 | unsigned dmasize; |
| 125 | unsigned dma_qcount; |
| 126 | |
| 127 | /* OSS stuff */ |
| 128 | unsigned mapped:1; |
| 129 | unsigned ready:1; |
| 130 | unsigned stopped:1; |
| 131 | unsigned ossfragshift; |
| 132 | int ossmaxfrags; |
| 133 | unsigned subdivision; |
| 134 | } dma_dac, dma_adc; |
| 135 | } au1550_state; |
| 136 | |
| 137 | static unsigned |
| 138 | ld2(unsigned int x) |
| 139 | { |
| 140 | unsigned r = 0; |
| 141 | |
| 142 | if (x >= 0x10000) { |
| 143 | x >>= 16; |
| 144 | r += 16; |
| 145 | } |
| 146 | if (x >= 0x100) { |
| 147 | x >>= 8; |
| 148 | r += 8; |
| 149 | } |
| 150 | if (x >= 0x10) { |
| 151 | x >>= 4; |
| 152 | r += 4; |
| 153 | } |
| 154 | if (x >= 4) { |
| 155 | x >>= 2; |
| 156 | r += 2; |
| 157 | } |
| 158 | if (x >= 2) |
| 159 | r++; |
| 160 | return r; |
| 161 | } |
| 162 | |
| 163 | static void |
| 164 | au1550_delay(int msec) |
| 165 | { |
| 166 | unsigned long tmo; |
| 167 | signed long tmo2; |
| 168 | |
| 169 | if (in_interrupt()) |
| 170 | return; |
| 171 | |
| 172 | tmo = jiffies + (msec * HZ) / 1000; |
| 173 | for (;;) { |
| 174 | tmo2 = tmo - jiffies; |
| 175 | if (tmo2 <= 0) |
| 176 | break; |
| 177 | schedule_timeout(tmo2); |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | static u16 |
| 182 | rdcodec(struct ac97_codec *codec, u8 addr) |
| 183 | { |
| 184 | struct au1550_state *s = (struct au1550_state *)codec->private_data; |
| 185 | unsigned long flags; |
| 186 | u32 cmd, val; |
| 187 | u16 data; |
| 188 | int i; |
| 189 | |
| 190 | spin_lock_irqsave(&s->lock, flags); |
| 191 | |
| 192 | for (i = 0; i < POLL_COUNT; i++) { |
| 193 | val = au_readl(PSC_AC97STAT); |
| 194 | au_sync(); |
| 195 | if (!(val & PSC_AC97STAT_CP)) |
| 196 | break; |
| 197 | } |
| 198 | if (i == POLL_COUNT) |
| 199 | err("rdcodec: codec cmd pending expired!"); |
| 200 | |
| 201 | cmd = (u32)PSC_AC97CDC_INDX(addr); |
| 202 | cmd |= PSC_AC97CDC_RD; /* read command */ |
| 203 | au_writel(cmd, PSC_AC97CDC); |
| 204 | au_sync(); |
| 205 | |
| 206 | /* now wait for the data |
| 207 | */ |
| 208 | for (i = 0; i < POLL_COUNT; i++) { |
| 209 | val = au_readl(PSC_AC97STAT); |
| 210 | au_sync(); |
| 211 | if (!(val & PSC_AC97STAT_CP)) |
| 212 | break; |
| 213 | } |
| 214 | if (i == POLL_COUNT) { |
| 215 | err("rdcodec: read poll expired!"); |
| 216 | return 0; |
| 217 | } |
| 218 | |
| 219 | /* wait for command done? |
| 220 | */ |
| 221 | for (i = 0; i < POLL_COUNT; i++) { |
| 222 | val = au_readl(PSC_AC97EVNT); |
| 223 | au_sync(); |
| 224 | if (val & PSC_AC97EVNT_CD) |
| 225 | break; |
| 226 | } |
| 227 | if (i == POLL_COUNT) { |
| 228 | err("rdcodec: read cmdwait expired!"); |
| 229 | return 0; |
| 230 | } |
| 231 | |
| 232 | data = au_readl(PSC_AC97CDC) & 0xffff; |
| 233 | au_sync(); |
| 234 | |
| 235 | /* Clear command done event. |
| 236 | */ |
| 237 | au_writel(PSC_AC97EVNT_CD, PSC_AC97EVNT); |
| 238 | au_sync(); |
| 239 | |
| 240 | spin_unlock_irqrestore(&s->lock, flags); |
| 241 | |
| 242 | return data; |
| 243 | } |
| 244 | |
| 245 | |
| 246 | static void |
| 247 | wrcodec(struct ac97_codec *codec, u8 addr, u16 data) |
| 248 | { |
| 249 | struct au1550_state *s = (struct au1550_state *)codec->private_data; |
| 250 | unsigned long flags; |
| 251 | u32 cmd, val; |
| 252 | int i; |
| 253 | |
| 254 | spin_lock_irqsave(&s->lock, flags); |
| 255 | |
| 256 | for (i = 0; i < POLL_COUNT; i++) { |
| 257 | val = au_readl(PSC_AC97STAT); |
| 258 | au_sync(); |
| 259 | if (!(val & PSC_AC97STAT_CP)) |
| 260 | break; |
| 261 | } |
| 262 | if (i == POLL_COUNT) |
| 263 | err("wrcodec: codec cmd pending expired!"); |
| 264 | |
| 265 | cmd = (u32)PSC_AC97CDC_INDX(addr); |
| 266 | cmd |= (u32)data; |
| 267 | au_writel(cmd, PSC_AC97CDC); |
| 268 | au_sync(); |
| 269 | |
| 270 | for (i = 0; i < POLL_COUNT; i++) { |
| 271 | val = au_readl(PSC_AC97STAT); |
| 272 | au_sync(); |
| 273 | if (!(val & PSC_AC97STAT_CP)) |
| 274 | break; |
| 275 | } |
| 276 | if (i == POLL_COUNT) |
| 277 | err("wrcodec: codec cmd pending expired!"); |
| 278 | |
| 279 | for (i = 0; i < POLL_COUNT; i++) { |
| 280 | val = au_readl(PSC_AC97EVNT); |
| 281 | au_sync(); |
| 282 | if (val & PSC_AC97EVNT_CD) |
| 283 | break; |
| 284 | } |
| 285 | if (i == POLL_COUNT) |
| 286 | err("wrcodec: read cmdwait expired!"); |
| 287 | |
| 288 | /* Clear command done event. |
| 289 | */ |
| 290 | au_writel(PSC_AC97EVNT_CD, PSC_AC97EVNT); |
| 291 | au_sync(); |
| 292 | |
| 293 | spin_unlock_irqrestore(&s->lock, flags); |
| 294 | } |
| 295 | |
| 296 | static void |
| 297 | waitcodec(struct ac97_codec *codec) |
| 298 | { |
| 299 | u16 temp; |
| 300 | u32 val; |
| 301 | int i; |
| 302 | |
| 303 | /* codec_wait is used to wait for a ready state after |
| 304 | * an AC97C_RESET. |
| 305 | */ |
| 306 | au1550_delay(10); |
| 307 | |
| 308 | /* first poll the CODEC_READY tag bit |
| 309 | */ |
| 310 | for (i = 0; i < POLL_COUNT; i++) { |
| 311 | val = au_readl(PSC_AC97STAT); |
| 312 | au_sync(); |
| 313 | if (val & PSC_AC97STAT_CR) |
| 314 | break; |
| 315 | } |
| 316 | if (i == POLL_COUNT) { |
| 317 | err("waitcodec: CODEC_READY poll expired!"); |
| 318 | return; |
| 319 | } |
| 320 | |
| 321 | /* get AC'97 powerdown control/status register |
| 322 | */ |
| 323 | temp = rdcodec(codec, AC97_POWER_CONTROL); |
| 324 | |
| 325 | /* If anything is powered down, power'em up |
| 326 | */ |
| 327 | if (temp & 0x7f00) { |
| 328 | /* Power on |
| 329 | */ |
| 330 | wrcodec(codec, AC97_POWER_CONTROL, 0); |
| 331 | au1550_delay(100); |
| 332 | |
| 333 | /* Reread |
| 334 | */ |
| 335 | temp = rdcodec(codec, AC97_POWER_CONTROL); |
| 336 | } |
| 337 | |
| 338 | /* Check if Codec REF,ANL,DAC,ADC ready |
| 339 | */ |
| 340 | if ((temp & 0x7f0f) != 0x000f) |
| 341 | err("codec reg 26 status (0x%x) not ready!!", temp); |
| 342 | } |
| 343 | |
| 344 | /* stop the ADC before calling */ |
| 345 | static void |
| 346 | set_adc_rate(struct au1550_state *s, unsigned rate) |
| 347 | { |
| 348 | struct dmabuf *adc = &s->dma_adc; |
| 349 | struct dmabuf *dac = &s->dma_dac; |
| 350 | unsigned adc_rate, dac_rate; |
| 351 | u16 ac97_extstat; |
| 352 | |
| 353 | if (s->no_vra) { |
| 354 | /* calc SRC factor |
| 355 | */ |
| 356 | adc->src_factor = ((96000 / rate) + 1) >> 1; |
| 357 | adc->sample_rate = 48000 / adc->src_factor; |
| 358 | return; |
| 359 | } |
| 360 | |
| 361 | adc->src_factor = 1; |
| 362 | |
| 363 | ac97_extstat = rdcodec(s->codec, AC97_EXTENDED_STATUS); |
| 364 | |
| 365 | rate = rate > 48000 ? 48000 : rate; |
| 366 | |
| 367 | /* enable VRA |
| 368 | */ |
| 369 | wrcodec(s->codec, AC97_EXTENDED_STATUS, |
| 370 | ac97_extstat | AC97_EXTSTAT_VRA); |
| 371 | |
| 372 | /* now write the sample rate |
| 373 | */ |
| 374 | wrcodec(s->codec, AC97_PCM_LR_ADC_RATE, (u16) rate); |
| 375 | |
| 376 | /* read it back for actual supported rate |
| 377 | */ |
| 378 | adc_rate = rdcodec(s->codec, AC97_PCM_LR_ADC_RATE); |
| 379 | |
| 380 | pr_debug("set_adc_rate: set to %d Hz\n", adc_rate); |
| 381 | |
| 382 | /* some codec's don't allow unequal DAC and ADC rates, in which case |
| 383 | * writing one rate reg actually changes both. |
| 384 | */ |
| 385 | dac_rate = rdcodec(s->codec, AC97_PCM_FRONT_DAC_RATE); |
| 386 | if (dac->num_channels > 2) |
| 387 | wrcodec(s->codec, AC97_PCM_SURR_DAC_RATE, dac_rate); |
| 388 | if (dac->num_channels > 4) |
| 389 | wrcodec(s->codec, AC97_PCM_LFE_DAC_RATE, dac_rate); |
| 390 | |
| 391 | adc->sample_rate = adc_rate; |
| 392 | dac->sample_rate = dac_rate; |
| 393 | } |
| 394 | |
| 395 | /* stop the DAC before calling */ |
| 396 | static void |
| 397 | set_dac_rate(struct au1550_state *s, unsigned rate) |
| 398 | { |
| 399 | struct dmabuf *dac = &s->dma_dac; |
| 400 | struct dmabuf *adc = &s->dma_adc; |
| 401 | unsigned adc_rate, dac_rate; |
| 402 | u16 ac97_extstat; |
| 403 | |
| 404 | if (s->no_vra) { |
| 405 | /* calc SRC factor |
| 406 | */ |
| 407 | dac->src_factor = ((96000 / rate) + 1) >> 1; |
| 408 | dac->sample_rate = 48000 / dac->src_factor; |
| 409 | return; |
| 410 | } |
| 411 | |
| 412 | dac->src_factor = 1; |
| 413 | |
| 414 | ac97_extstat = rdcodec(s->codec, AC97_EXTENDED_STATUS); |
| 415 | |
| 416 | rate = rate > 48000 ? 48000 : rate; |
| 417 | |
| 418 | /* enable VRA |
| 419 | */ |
| 420 | wrcodec(s->codec, AC97_EXTENDED_STATUS, |
| 421 | ac97_extstat | AC97_EXTSTAT_VRA); |
| 422 | |
| 423 | /* now write the sample rate |
| 424 | */ |
| 425 | wrcodec(s->codec, AC97_PCM_FRONT_DAC_RATE, (u16) rate); |
| 426 | |
| 427 | /* I don't support different sample rates for multichannel, |
| 428 | * so make these channels the same. |
| 429 | */ |
| 430 | if (dac->num_channels > 2) |
| 431 | wrcodec(s->codec, AC97_PCM_SURR_DAC_RATE, (u16) rate); |
| 432 | if (dac->num_channels > 4) |
| 433 | wrcodec(s->codec, AC97_PCM_LFE_DAC_RATE, (u16) rate); |
| 434 | /* read it back for actual supported rate |
| 435 | */ |
| 436 | dac_rate = rdcodec(s->codec, AC97_PCM_FRONT_DAC_RATE); |
| 437 | |
| 438 | pr_debug("set_dac_rate: set to %d Hz\n", dac_rate); |
| 439 | |
| 440 | /* some codec's don't allow unequal DAC and ADC rates, in which case |
| 441 | * writing one rate reg actually changes both. |
| 442 | */ |
| 443 | adc_rate = rdcodec(s->codec, AC97_PCM_LR_ADC_RATE); |
| 444 | |
| 445 | dac->sample_rate = dac_rate; |
| 446 | adc->sample_rate = adc_rate; |
| 447 | } |
| 448 | |
| 449 | static void |
| 450 | stop_dac(struct au1550_state *s) |
| 451 | { |
| 452 | struct dmabuf *db = &s->dma_dac; |
| 453 | u32 stat; |
| 454 | unsigned long flags; |
| 455 | |
| 456 | if (db->stopped) |
| 457 | return; |
| 458 | |
| 459 | spin_lock_irqsave(&s->lock, flags); |
| 460 | |
| 461 | au_writel(PSC_AC97PCR_TP, PSC_AC97PCR); |
| 462 | au_sync(); |
| 463 | |
| 464 | /* Wait for Transmit Busy to show disabled. |
| 465 | */ |
| 466 | do { |
Sergei Shtylylov | 05090fc | 2006-01-05 22:50:39 -0800 | [diff] [blame] | 467 | stat = au_readl(PSC_AC97STAT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | au_sync(); |
| 469 | } while ((stat & PSC_AC97STAT_TB) != 0); |
| 470 | |
| 471 | au1xxx_dbdma_reset(db->dmanr); |
| 472 | |
| 473 | db->stopped = 1; |
| 474 | |
| 475 | spin_unlock_irqrestore(&s->lock, flags); |
| 476 | } |
| 477 | |
| 478 | static void |
| 479 | stop_adc(struct au1550_state *s) |
| 480 | { |
| 481 | struct dmabuf *db = &s->dma_adc; |
| 482 | unsigned long flags; |
| 483 | u32 stat; |
| 484 | |
| 485 | if (db->stopped) |
| 486 | return; |
| 487 | |
| 488 | spin_lock_irqsave(&s->lock, flags); |
| 489 | |
| 490 | au_writel(PSC_AC97PCR_RP, PSC_AC97PCR); |
| 491 | au_sync(); |
| 492 | |
| 493 | /* Wait for Receive Busy to show disabled. |
| 494 | */ |
| 495 | do { |
Sergei Shtylylov | 05090fc | 2006-01-05 22:50:39 -0800 | [diff] [blame] | 496 | stat = au_readl(PSC_AC97STAT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | au_sync(); |
| 498 | } while ((stat & PSC_AC97STAT_RB) != 0); |
| 499 | |
| 500 | au1xxx_dbdma_reset(db->dmanr); |
| 501 | |
| 502 | db->stopped = 1; |
| 503 | |
| 504 | spin_unlock_irqrestore(&s->lock, flags); |
| 505 | } |
| 506 | |
| 507 | |
| 508 | static void |
| 509 | set_xmit_slots(int num_channels) |
| 510 | { |
| 511 | u32 ac97_config, stat; |
| 512 | |
| 513 | ac97_config = au_readl(PSC_AC97CFG); |
| 514 | au_sync(); |
| 515 | ac97_config &= ~(PSC_AC97CFG_TXSLOT_MASK | PSC_AC97CFG_DE_ENABLE); |
| 516 | au_writel(ac97_config, PSC_AC97CFG); |
| 517 | au_sync(); |
| 518 | |
| 519 | switch (num_channels) { |
| 520 | case 6: /* stereo with surround and center/LFE, |
| 521 | * slots 3,4,6,7,8,9 |
| 522 | */ |
| 523 | ac97_config |= PSC_AC97CFG_TXSLOT_ENA(6); |
| 524 | ac97_config |= PSC_AC97CFG_TXSLOT_ENA(9); |
| 525 | |
| 526 | case 4: /* stereo with surround, slots 3,4,7,8 */ |
| 527 | ac97_config |= PSC_AC97CFG_TXSLOT_ENA(7); |
| 528 | ac97_config |= PSC_AC97CFG_TXSLOT_ENA(8); |
| 529 | |
| 530 | case 2: /* stereo, slots 3,4 */ |
| 531 | case 1: /* mono */ |
| 532 | ac97_config |= PSC_AC97CFG_TXSLOT_ENA(3); |
| 533 | ac97_config |= PSC_AC97CFG_TXSLOT_ENA(4); |
| 534 | } |
| 535 | |
| 536 | au_writel(ac97_config, PSC_AC97CFG); |
| 537 | au_sync(); |
| 538 | |
| 539 | ac97_config |= PSC_AC97CFG_DE_ENABLE; |
| 540 | au_writel(ac97_config, PSC_AC97CFG); |
| 541 | au_sync(); |
| 542 | |
| 543 | /* Wait for Device ready. |
| 544 | */ |
| 545 | do { |
Sergei Shtylylov | 05090fc | 2006-01-05 22:50:39 -0800 | [diff] [blame] | 546 | stat = au_readl(PSC_AC97STAT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | au_sync(); |
| 548 | } while ((stat & PSC_AC97STAT_DR) == 0); |
| 549 | } |
| 550 | |
| 551 | static void |
| 552 | set_recv_slots(int num_channels) |
| 553 | { |
| 554 | u32 ac97_config, stat; |
| 555 | |
| 556 | ac97_config = au_readl(PSC_AC97CFG); |
| 557 | au_sync(); |
| 558 | ac97_config &= ~(PSC_AC97CFG_RXSLOT_MASK | PSC_AC97CFG_DE_ENABLE); |
| 559 | au_writel(ac97_config, PSC_AC97CFG); |
| 560 | au_sync(); |
| 561 | |
| 562 | /* Always enable slots 3 and 4 (stereo). Slot 6 is |
| 563 | * optional Mic ADC, which we don't support yet. |
| 564 | */ |
| 565 | ac97_config |= PSC_AC97CFG_RXSLOT_ENA(3); |
| 566 | ac97_config |= PSC_AC97CFG_RXSLOT_ENA(4); |
| 567 | |
| 568 | au_writel(ac97_config, PSC_AC97CFG); |
| 569 | au_sync(); |
| 570 | |
| 571 | ac97_config |= PSC_AC97CFG_DE_ENABLE; |
| 572 | au_writel(ac97_config, PSC_AC97CFG); |
| 573 | au_sync(); |
| 574 | |
| 575 | /* Wait for Device ready. |
| 576 | */ |
| 577 | do { |
Sergei Shtylylov | 05090fc | 2006-01-05 22:50:39 -0800 | [diff] [blame] | 578 | stat = au_readl(PSC_AC97STAT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | au_sync(); |
| 580 | } while ((stat & PSC_AC97STAT_DR) == 0); |
| 581 | } |
| 582 | |
Sergei Shtylylov | 7b66665 | 2005-12-15 12:34:30 -0800 | [diff] [blame] | 583 | /* Hold spinlock for both start_dac() and start_adc() calls */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | static void |
| 585 | start_dac(struct au1550_state *s) |
| 586 | { |
| 587 | struct dmabuf *db = &s->dma_dac; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | |
| 589 | if (!db->stopped) |
| 590 | return; |
| 591 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | set_xmit_slots(db->num_channels); |
| 593 | au_writel(PSC_AC97PCR_TC, PSC_AC97PCR); |
| 594 | au_sync(); |
| 595 | au_writel(PSC_AC97PCR_TS, PSC_AC97PCR); |
| 596 | au_sync(); |
| 597 | |
| 598 | au1xxx_dbdma_start(db->dmanr); |
| 599 | |
| 600 | db->stopped = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | } |
| 602 | |
| 603 | static void |
| 604 | start_adc(struct au1550_state *s) |
| 605 | { |
| 606 | struct dmabuf *db = &s->dma_adc; |
| 607 | int i; |
| 608 | |
| 609 | if (!db->stopped) |
| 610 | return; |
| 611 | |
| 612 | /* Put two buffers on the ring to get things started. |
| 613 | */ |
| 614 | for (i=0; i<2; i++) { |
| 615 | au1xxx_dbdma_put_dest(db->dmanr, db->nextIn, db->dma_fragsize); |
| 616 | |
| 617 | db->nextIn += db->dma_fragsize; |
| 618 | if (db->nextIn >= db->rawbuf + db->dmasize) |
| 619 | db->nextIn -= db->dmasize; |
| 620 | } |
| 621 | |
| 622 | set_recv_slots(db->num_channels); |
| 623 | au1xxx_dbdma_start(db->dmanr); |
| 624 | au_writel(PSC_AC97PCR_RC, PSC_AC97PCR); |
| 625 | au_sync(); |
| 626 | au_writel(PSC_AC97PCR_RS, PSC_AC97PCR); |
| 627 | au_sync(); |
| 628 | |
| 629 | db->stopped = 0; |
| 630 | } |
| 631 | |
| 632 | static int |
| 633 | prog_dmabuf(struct au1550_state *s, struct dmabuf *db) |
| 634 | { |
| 635 | unsigned user_bytes_per_sec; |
| 636 | unsigned bufs; |
| 637 | unsigned rate = db->sample_rate; |
| 638 | |
| 639 | if (!db->rawbuf) { |
| 640 | db->ready = db->mapped = 0; |
| 641 | db->buforder = 5; /* 32 * PAGE_SIZE */ |
| 642 | db->rawbuf = kmalloc((PAGE_SIZE << db->buforder), GFP_KERNEL); |
| 643 | if (!db->rawbuf) |
| 644 | return -ENOMEM; |
| 645 | } |
| 646 | |
| 647 | db->cnt_factor = 1; |
| 648 | if (db->sample_size == 8) |
| 649 | db->cnt_factor *= 2; |
| 650 | if (db->num_channels == 1) |
| 651 | db->cnt_factor *= 2; |
| 652 | db->cnt_factor *= db->src_factor; |
| 653 | |
| 654 | db->count = 0; |
| 655 | db->dma_qcount = 0; |
| 656 | db->nextIn = db->nextOut = db->rawbuf; |
| 657 | |
| 658 | db->user_bytes_per_sample = (db->sample_size>>3) * db->num_channels; |
| 659 | db->dma_bytes_per_sample = 2 * ((db->num_channels == 1) ? |
| 660 | 2 : db->num_channels); |
| 661 | |
| 662 | user_bytes_per_sec = rate * db->user_bytes_per_sample; |
| 663 | bufs = PAGE_SIZE << db->buforder; |
| 664 | if (db->ossfragshift) { |
| 665 | if ((1000 << db->ossfragshift) < user_bytes_per_sec) |
| 666 | db->fragshift = ld2(user_bytes_per_sec/1000); |
| 667 | else |
| 668 | db->fragshift = db->ossfragshift; |
| 669 | } else { |
| 670 | db->fragshift = ld2(user_bytes_per_sec / 100 / |
| 671 | (db->subdivision ? db->subdivision : 1)); |
| 672 | if (db->fragshift < 3) |
| 673 | db->fragshift = 3; |
| 674 | } |
| 675 | |
| 676 | db->fragsize = 1 << db->fragshift; |
| 677 | db->dma_fragsize = db->fragsize * db->cnt_factor; |
| 678 | db->numfrag = bufs / db->dma_fragsize; |
| 679 | |
| 680 | while (db->numfrag < 4 && db->fragshift > 3) { |
| 681 | db->fragshift--; |
| 682 | db->fragsize = 1 << db->fragshift; |
| 683 | db->dma_fragsize = db->fragsize * db->cnt_factor; |
| 684 | db->numfrag = bufs / db->dma_fragsize; |
| 685 | } |
| 686 | |
| 687 | if (db->ossmaxfrags >= 4 && db->ossmaxfrags < db->numfrag) |
| 688 | db->numfrag = db->ossmaxfrags; |
| 689 | |
| 690 | db->dmasize = db->dma_fragsize * db->numfrag; |
| 691 | memset(db->rawbuf, 0, bufs); |
| 692 | |
| 693 | pr_debug("prog_dmabuf: rate=%d, samplesize=%d, channels=%d\n", |
| 694 | rate, db->sample_size, db->num_channels); |
| 695 | pr_debug("prog_dmabuf: fragsize=%d, cnt_factor=%d, dma_fragsize=%d\n", |
| 696 | db->fragsize, db->cnt_factor, db->dma_fragsize); |
| 697 | pr_debug("prog_dmabuf: numfrag=%d, dmasize=%d\n", db->numfrag, db->dmasize); |
| 698 | |
| 699 | db->ready = 1; |
| 700 | return 0; |
| 701 | } |
| 702 | |
| 703 | static int |
| 704 | prog_dmabuf_adc(struct au1550_state *s) |
| 705 | { |
| 706 | stop_adc(s); |
| 707 | return prog_dmabuf(s, &s->dma_adc); |
| 708 | |
| 709 | } |
| 710 | |
| 711 | static int |
| 712 | prog_dmabuf_dac(struct au1550_state *s) |
| 713 | { |
| 714 | stop_dac(s); |
| 715 | return prog_dmabuf(s, &s->dma_dac); |
| 716 | } |
| 717 | |
| 718 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | static void |
| 720 | dac_dma_interrupt(int irq, void *dev_id, struct pt_regs *regs) |
| 721 | { |
| 722 | struct au1550_state *s = (struct au1550_state *) dev_id; |
| 723 | struct dmabuf *db = &s->dma_dac; |
| 724 | u32 ac97c_stat; |
| 725 | |
Sergei Shtylylov | 7b66665 | 2005-12-15 12:34:30 -0800 | [diff] [blame] | 726 | spin_lock(&s->lock); |
| 727 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | ac97c_stat = au_readl(PSC_AC97STAT); |
| 729 | if (ac97c_stat & (AC97C_XU | AC97C_XO | AC97C_TE)) |
| 730 | pr_debug("AC97C status = 0x%08x\n", ac97c_stat); |
| 731 | db->dma_qcount--; |
| 732 | |
| 733 | if (db->count >= db->fragsize) { |
| 734 | if (au1xxx_dbdma_put_source(db->dmanr, db->nextOut, |
| 735 | db->fragsize) == 0) { |
| 736 | err("qcount < 2 and no ring room!"); |
| 737 | } |
| 738 | db->nextOut += db->fragsize; |
| 739 | if (db->nextOut >= db->rawbuf + db->dmasize) |
| 740 | db->nextOut -= db->dmasize; |
| 741 | db->count -= db->fragsize; |
| 742 | db->total_bytes += db->dma_fragsize; |
| 743 | db->dma_qcount++; |
| 744 | } |
| 745 | |
| 746 | /* wake up anybody listening */ |
| 747 | if (waitqueue_active(&db->wait)) |
| 748 | wake_up(&db->wait); |
Sergei Shtylylov | 7b66665 | 2005-12-15 12:34:30 -0800 | [diff] [blame] | 749 | |
| 750 | spin_unlock(&s->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | } |
| 752 | |
| 753 | |
| 754 | static void |
| 755 | adc_dma_interrupt(int irq, void *dev_id, struct pt_regs *regs) |
| 756 | { |
| 757 | struct au1550_state *s = (struct au1550_state *)dev_id; |
| 758 | struct dmabuf *dp = &s->dma_adc; |
| 759 | u32 obytes; |
| 760 | char *obuf; |
| 761 | |
Sergei Shtylylov | 7b66665 | 2005-12-15 12:34:30 -0800 | [diff] [blame] | 762 | spin_lock(&s->lock); |
| 763 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | /* Pull the buffer from the dma queue. |
| 765 | */ |
| 766 | au1xxx_dbdma_get_dest(dp->dmanr, (void *)(&obuf), &obytes); |
| 767 | |
| 768 | if ((dp->count + obytes) > dp->dmasize) { |
| 769 | /* Overrun. Stop ADC and log the error |
| 770 | */ |
Sergei Shtylylov | 7b66665 | 2005-12-15 12:34:30 -0800 | [diff] [blame] | 771 | spin_unlock(&s->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | stop_adc(s); |
| 773 | dp->error++; |
| 774 | err("adc overrun"); |
| 775 | return; |
| 776 | } |
| 777 | |
| 778 | /* Put a new empty buffer on the destination DMA. |
| 779 | */ |
| 780 | au1xxx_dbdma_put_dest(dp->dmanr, dp->nextIn, dp->dma_fragsize); |
| 781 | |
| 782 | dp->nextIn += dp->dma_fragsize; |
| 783 | if (dp->nextIn >= dp->rawbuf + dp->dmasize) |
| 784 | dp->nextIn -= dp->dmasize; |
| 785 | |
| 786 | dp->count += obytes; |
| 787 | dp->total_bytes += obytes; |
| 788 | |
| 789 | /* wake up anybody listening |
| 790 | */ |
| 791 | if (waitqueue_active(&dp->wait)) |
| 792 | wake_up(&dp->wait); |
| 793 | |
Sergei Shtylylov | 7b66665 | 2005-12-15 12:34:30 -0800 | [diff] [blame] | 794 | spin_unlock(&s->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | } |
| 796 | |
| 797 | static loff_t |
| 798 | au1550_llseek(struct file *file, loff_t offset, int origin) |
| 799 | { |
| 800 | return -ESPIPE; |
| 801 | } |
| 802 | |
| 803 | |
| 804 | static int |
| 805 | au1550_open_mixdev(struct inode *inode, struct file *file) |
| 806 | { |
| 807 | file->private_data = &au1550_state; |
| 808 | return 0; |
| 809 | } |
| 810 | |
| 811 | static int |
| 812 | au1550_release_mixdev(struct inode *inode, struct file *file) |
| 813 | { |
| 814 | return 0; |
| 815 | } |
| 816 | |
| 817 | static int |
| 818 | mixdev_ioctl(struct ac97_codec *codec, unsigned int cmd, |
| 819 | unsigned long arg) |
| 820 | { |
| 821 | return codec->mixer_ioctl(codec, cmd, arg); |
| 822 | } |
| 823 | |
| 824 | static int |
| 825 | au1550_ioctl_mixdev(struct inode *inode, struct file *file, |
| 826 | unsigned int cmd, unsigned long arg) |
| 827 | { |
| 828 | struct au1550_state *s = (struct au1550_state *)file->private_data; |
| 829 | struct ac97_codec *codec = s->codec; |
| 830 | |
| 831 | return mixdev_ioctl(codec, cmd, arg); |
| 832 | } |
| 833 | |
| 834 | static /*const */ struct file_operations au1550_mixer_fops = { |
| 835 | owner:THIS_MODULE, |
| 836 | llseek:au1550_llseek, |
| 837 | ioctl:au1550_ioctl_mixdev, |
| 838 | open:au1550_open_mixdev, |
| 839 | release:au1550_release_mixdev, |
| 840 | }; |
| 841 | |
| 842 | static int |
| 843 | drain_dac(struct au1550_state *s, int nonblock) |
| 844 | { |
| 845 | unsigned long flags; |
| 846 | int count, tmo; |
| 847 | |
| 848 | if (s->dma_dac.mapped || !s->dma_dac.ready || s->dma_dac.stopped) |
| 849 | return 0; |
| 850 | |
| 851 | for (;;) { |
| 852 | spin_lock_irqsave(&s->lock, flags); |
| 853 | count = s->dma_dac.count; |
| 854 | spin_unlock_irqrestore(&s->lock, flags); |
| 855 | if (count <= s->dma_dac.fragsize) |
| 856 | break; |
| 857 | if (signal_pending(current)) |
| 858 | break; |
| 859 | if (nonblock) |
| 860 | return -EBUSY; |
| 861 | tmo = 1000 * count / (s->no_vra ? |
| 862 | 48000 : s->dma_dac.sample_rate); |
| 863 | tmo /= s->dma_dac.dma_bytes_per_sample; |
| 864 | au1550_delay(tmo); |
| 865 | } |
| 866 | if (signal_pending(current)) |
| 867 | return -ERESTARTSYS; |
| 868 | return 0; |
| 869 | } |
| 870 | |
| 871 | static inline u8 S16_TO_U8(s16 ch) |
| 872 | { |
| 873 | return (u8) (ch >> 8) + 0x80; |
| 874 | } |
| 875 | static inline s16 U8_TO_S16(u8 ch) |
| 876 | { |
| 877 | return (s16) (ch - 0x80) << 8; |
| 878 | } |
| 879 | |
| 880 | /* |
| 881 | * Translates user samples to dma buffer suitable for AC'97 DAC data: |
| 882 | * If mono, copy left channel to right channel in dma buffer. |
| 883 | * If 8 bit samples, cvt to 16-bit before writing to dma buffer. |
| 884 | * If interpolating (no VRA), duplicate every audio frame src_factor times. |
| 885 | */ |
| 886 | static int |
| 887 | translate_from_user(struct dmabuf *db, char* dmabuf, char* userbuf, |
| 888 | int dmacount) |
| 889 | { |
| 890 | int sample, i; |
| 891 | int interp_bytes_per_sample; |
| 892 | int num_samples; |
| 893 | int mono = (db->num_channels == 1); |
| 894 | char usersample[12]; |
| 895 | s16 ch, dmasample[6]; |
| 896 | |
| 897 | if (db->sample_size == 16 && !mono && db->src_factor == 1) { |
| 898 | /* no translation necessary, just copy |
| 899 | */ |
| 900 | if (copy_from_user(dmabuf, userbuf, dmacount)) |
| 901 | return -EFAULT; |
| 902 | return dmacount; |
| 903 | } |
| 904 | |
| 905 | interp_bytes_per_sample = db->dma_bytes_per_sample * db->src_factor; |
| 906 | num_samples = dmacount / interp_bytes_per_sample; |
| 907 | |
| 908 | for (sample = 0; sample < num_samples; sample++) { |
| 909 | if (copy_from_user(usersample, userbuf, |
| 910 | db->user_bytes_per_sample)) { |
| 911 | return -EFAULT; |
| 912 | } |
| 913 | |
| 914 | for (i = 0; i < db->num_channels; i++) { |
| 915 | if (db->sample_size == 8) |
| 916 | ch = U8_TO_S16(usersample[i]); |
| 917 | else |
| 918 | ch = *((s16 *) (&usersample[i * 2])); |
| 919 | dmasample[i] = ch; |
| 920 | if (mono) |
| 921 | dmasample[i + 1] = ch; /* right channel */ |
| 922 | } |
| 923 | |
| 924 | /* duplicate every audio frame src_factor times |
| 925 | */ |
| 926 | for (i = 0; i < db->src_factor; i++) |
| 927 | memcpy(dmabuf, dmasample, db->dma_bytes_per_sample); |
| 928 | |
| 929 | userbuf += db->user_bytes_per_sample; |
| 930 | dmabuf += interp_bytes_per_sample; |
| 931 | } |
| 932 | |
| 933 | return num_samples * interp_bytes_per_sample; |
| 934 | } |
| 935 | |
| 936 | /* |
| 937 | * Translates AC'97 ADC samples to user buffer: |
| 938 | * If mono, send only left channel to user buffer. |
| 939 | * If 8 bit samples, cvt from 16 to 8 bit before writing to user buffer. |
| 940 | * If decimating (no VRA), skip over src_factor audio frames. |
| 941 | */ |
| 942 | static int |
| 943 | translate_to_user(struct dmabuf *db, char* userbuf, char* dmabuf, |
| 944 | int dmacount) |
| 945 | { |
| 946 | int sample, i; |
| 947 | int interp_bytes_per_sample; |
| 948 | int num_samples; |
| 949 | int mono = (db->num_channels == 1); |
| 950 | char usersample[12]; |
| 951 | |
| 952 | if (db->sample_size == 16 && !mono && db->src_factor == 1) { |
| 953 | /* no translation necessary, just copy |
| 954 | */ |
| 955 | if (copy_to_user(userbuf, dmabuf, dmacount)) |
| 956 | return -EFAULT; |
| 957 | return dmacount; |
| 958 | } |
| 959 | |
| 960 | interp_bytes_per_sample = db->dma_bytes_per_sample * db->src_factor; |
| 961 | num_samples = dmacount / interp_bytes_per_sample; |
| 962 | |
| 963 | for (sample = 0; sample < num_samples; sample++) { |
| 964 | for (i = 0; i < db->num_channels; i++) { |
| 965 | if (db->sample_size == 8) |
| 966 | usersample[i] = |
| 967 | S16_TO_U8(*((s16 *) (&dmabuf[i * 2]))); |
| 968 | else |
| 969 | *((s16 *) (&usersample[i * 2])) = |
| 970 | *((s16 *) (&dmabuf[i * 2])); |
| 971 | } |
| 972 | |
| 973 | if (copy_to_user(userbuf, usersample, |
| 974 | db->user_bytes_per_sample)) { |
| 975 | return -EFAULT; |
| 976 | } |
| 977 | |
| 978 | userbuf += db->user_bytes_per_sample; |
| 979 | dmabuf += interp_bytes_per_sample; |
| 980 | } |
| 981 | |
| 982 | return num_samples * interp_bytes_per_sample; |
| 983 | } |
| 984 | |
| 985 | /* |
| 986 | * Copy audio data to/from user buffer from/to dma buffer, taking care |
| 987 | * that we wrap when reading/writing the dma buffer. Returns actual byte |
| 988 | * count written to or read from the dma buffer. |
| 989 | */ |
| 990 | static int |
| 991 | copy_dmabuf_user(struct dmabuf *db, char* userbuf, int count, int to_user) |
| 992 | { |
| 993 | char *bufptr = to_user ? db->nextOut : db->nextIn; |
| 994 | char *bufend = db->rawbuf + db->dmasize; |
| 995 | int cnt, ret; |
| 996 | |
| 997 | if (bufptr + count > bufend) { |
| 998 | int partial = (int) (bufend - bufptr); |
| 999 | if (to_user) { |
| 1000 | if ((cnt = translate_to_user(db, userbuf, |
| 1001 | bufptr, partial)) < 0) |
| 1002 | return cnt; |
| 1003 | ret = cnt; |
| 1004 | if ((cnt = translate_to_user(db, userbuf + partial, |
| 1005 | db->rawbuf, |
| 1006 | count - partial)) < 0) |
| 1007 | return cnt; |
| 1008 | ret += cnt; |
| 1009 | } else { |
| 1010 | if ((cnt = translate_from_user(db, bufptr, userbuf, |
| 1011 | partial)) < 0) |
| 1012 | return cnt; |
| 1013 | ret = cnt; |
| 1014 | if ((cnt = translate_from_user(db, db->rawbuf, |
| 1015 | userbuf + partial, |
| 1016 | count - partial)) < 0) |
| 1017 | return cnt; |
| 1018 | ret += cnt; |
| 1019 | } |
| 1020 | } else { |
| 1021 | if (to_user) |
| 1022 | ret = translate_to_user(db, userbuf, bufptr, count); |
| 1023 | else |
| 1024 | ret = translate_from_user(db, bufptr, userbuf, count); |
| 1025 | } |
| 1026 | |
| 1027 | return ret; |
| 1028 | } |
| 1029 | |
| 1030 | |
| 1031 | static ssize_t |
| 1032 | au1550_read(struct file *file, char *buffer, size_t count, loff_t *ppos) |
| 1033 | { |
| 1034 | struct au1550_state *s = (struct au1550_state *)file->private_data; |
| 1035 | struct dmabuf *db = &s->dma_adc; |
| 1036 | DECLARE_WAITQUEUE(wait, current); |
| 1037 | ssize_t ret; |
| 1038 | unsigned long flags; |
| 1039 | int cnt, usercnt, avail; |
| 1040 | |
| 1041 | if (db->mapped) |
| 1042 | return -ENXIO; |
| 1043 | if (!access_ok(VERIFY_WRITE, buffer, count)) |
| 1044 | return -EFAULT; |
| 1045 | ret = 0; |
| 1046 | |
| 1047 | count *= db->cnt_factor; |
| 1048 | |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 1049 | mutex_lock(&s->sem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | add_wait_queue(&db->wait, &wait); |
| 1051 | |
| 1052 | while (count > 0) { |
| 1053 | /* wait for samples in ADC dma buffer |
| 1054 | */ |
| 1055 | do { |
Sergei Shtylylov | 7b66665 | 2005-12-15 12:34:30 -0800 | [diff] [blame] | 1056 | spin_lock_irqsave(&s->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | if (db->stopped) |
| 1058 | start_adc(s); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | avail = db->count; |
| 1060 | if (avail <= 0) |
| 1061 | __set_current_state(TASK_INTERRUPTIBLE); |
| 1062 | spin_unlock_irqrestore(&s->lock, flags); |
| 1063 | if (avail <= 0) { |
| 1064 | if (file->f_flags & O_NONBLOCK) { |
| 1065 | if (!ret) |
| 1066 | ret = -EAGAIN; |
| 1067 | goto out; |
| 1068 | } |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 1069 | mutex_unlock(&s->sem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | schedule(); |
| 1071 | if (signal_pending(current)) { |
| 1072 | if (!ret) |
| 1073 | ret = -ERESTARTSYS; |
| 1074 | goto out2; |
| 1075 | } |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 1076 | mutex_lock(&s->sem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | } |
| 1078 | } while (avail <= 0); |
| 1079 | |
| 1080 | /* copy from nextOut to user |
| 1081 | */ |
| 1082 | if ((cnt = copy_dmabuf_user(db, buffer, |
| 1083 | count > avail ? |
| 1084 | avail : count, 1)) < 0) { |
| 1085 | if (!ret) |
| 1086 | ret = -EFAULT; |
| 1087 | goto out; |
| 1088 | } |
| 1089 | |
| 1090 | spin_lock_irqsave(&s->lock, flags); |
| 1091 | db->count -= cnt; |
| 1092 | db->nextOut += cnt; |
| 1093 | if (db->nextOut >= db->rawbuf + db->dmasize) |
| 1094 | db->nextOut -= db->dmasize; |
| 1095 | spin_unlock_irqrestore(&s->lock, flags); |
| 1096 | |
| 1097 | count -= cnt; |
| 1098 | usercnt = cnt / db->cnt_factor; |
| 1099 | buffer += usercnt; |
| 1100 | ret += usercnt; |
| 1101 | } /* while (count > 0) */ |
| 1102 | |
| 1103 | out: |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 1104 | mutex_unlock(&s->sem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1105 | out2: |
| 1106 | remove_wait_queue(&db->wait, &wait); |
| 1107 | set_current_state(TASK_RUNNING); |
| 1108 | return ret; |
| 1109 | } |
| 1110 | |
| 1111 | static ssize_t |
| 1112 | au1550_write(struct file *file, const char *buffer, size_t count, loff_t * ppos) |
| 1113 | { |
| 1114 | struct au1550_state *s = (struct au1550_state *)file->private_data; |
| 1115 | struct dmabuf *db = &s->dma_dac; |
| 1116 | DECLARE_WAITQUEUE(wait, current); |
| 1117 | ssize_t ret = 0; |
| 1118 | unsigned long flags; |
| 1119 | int cnt, usercnt, avail; |
| 1120 | |
| 1121 | pr_debug("write: count=%d\n", count); |
| 1122 | |
| 1123 | if (db->mapped) |
| 1124 | return -ENXIO; |
| 1125 | if (!access_ok(VERIFY_READ, buffer, count)) |
| 1126 | return -EFAULT; |
| 1127 | |
| 1128 | count *= db->cnt_factor; |
| 1129 | |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 1130 | mutex_lock(&s->sem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1131 | add_wait_queue(&db->wait, &wait); |
| 1132 | |
| 1133 | while (count > 0) { |
| 1134 | /* wait for space in playback buffer |
| 1135 | */ |
| 1136 | do { |
| 1137 | spin_lock_irqsave(&s->lock, flags); |
| 1138 | avail = (int) db->dmasize - db->count; |
| 1139 | if (avail <= 0) |
| 1140 | __set_current_state(TASK_INTERRUPTIBLE); |
| 1141 | spin_unlock_irqrestore(&s->lock, flags); |
| 1142 | if (avail <= 0) { |
| 1143 | if (file->f_flags & O_NONBLOCK) { |
| 1144 | if (!ret) |
| 1145 | ret = -EAGAIN; |
| 1146 | goto out; |
| 1147 | } |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 1148 | mutex_unlock(&s->sem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | schedule(); |
| 1150 | if (signal_pending(current)) { |
| 1151 | if (!ret) |
| 1152 | ret = -ERESTARTSYS; |
| 1153 | goto out2; |
| 1154 | } |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 1155 | mutex_lock(&s->sem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1156 | } |
| 1157 | } while (avail <= 0); |
| 1158 | |
| 1159 | /* copy from user to nextIn |
| 1160 | */ |
| 1161 | if ((cnt = copy_dmabuf_user(db, (char *) buffer, |
| 1162 | count > avail ? |
| 1163 | avail : count, 0)) < 0) { |
| 1164 | if (!ret) |
| 1165 | ret = -EFAULT; |
| 1166 | goto out; |
| 1167 | } |
| 1168 | |
| 1169 | spin_lock_irqsave(&s->lock, flags); |
| 1170 | db->count += cnt; |
| 1171 | db->nextIn += cnt; |
| 1172 | if (db->nextIn >= db->rawbuf + db->dmasize) |
| 1173 | db->nextIn -= db->dmasize; |
| 1174 | |
| 1175 | /* If the data is available, we want to keep two buffers |
| 1176 | * on the dma queue. If the queue count reaches zero, |
| 1177 | * we know the dma has stopped. |
| 1178 | */ |
| 1179 | while ((db->dma_qcount < 2) && (db->count >= db->fragsize)) { |
| 1180 | if (au1xxx_dbdma_put_source(db->dmanr, db->nextOut, |
| 1181 | db->fragsize) == 0) { |
| 1182 | err("qcount < 2 and no ring room!"); |
| 1183 | } |
| 1184 | db->nextOut += db->fragsize; |
| 1185 | if (db->nextOut >= db->rawbuf + db->dmasize) |
| 1186 | db->nextOut -= db->dmasize; |
| 1187 | db->total_bytes += db->dma_fragsize; |
| 1188 | if (db->dma_qcount == 0) |
| 1189 | start_dac(s); |
| 1190 | db->dma_qcount++; |
| 1191 | } |
| 1192 | spin_unlock_irqrestore(&s->lock, flags); |
| 1193 | |
| 1194 | count -= cnt; |
| 1195 | usercnt = cnt / db->cnt_factor; |
| 1196 | buffer += usercnt; |
| 1197 | ret += usercnt; |
| 1198 | } /* while (count > 0) */ |
| 1199 | |
| 1200 | out: |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 1201 | mutex_unlock(&s->sem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | out2: |
| 1203 | remove_wait_queue(&db->wait, &wait); |
| 1204 | set_current_state(TASK_RUNNING); |
| 1205 | return ret; |
| 1206 | } |
| 1207 | |
| 1208 | |
| 1209 | /* No kernel lock - we have our own spinlock */ |
| 1210 | static unsigned int |
| 1211 | au1550_poll(struct file *file, struct poll_table_struct *wait) |
| 1212 | { |
| 1213 | struct au1550_state *s = (struct au1550_state *)file->private_data; |
| 1214 | unsigned long flags; |
| 1215 | unsigned int mask = 0; |
| 1216 | |
| 1217 | if (file->f_mode & FMODE_WRITE) { |
| 1218 | if (!s->dma_dac.ready) |
| 1219 | return 0; |
| 1220 | poll_wait(file, &s->dma_dac.wait, wait); |
| 1221 | } |
| 1222 | if (file->f_mode & FMODE_READ) { |
| 1223 | if (!s->dma_adc.ready) |
| 1224 | return 0; |
| 1225 | poll_wait(file, &s->dma_adc.wait, wait); |
| 1226 | } |
| 1227 | |
| 1228 | spin_lock_irqsave(&s->lock, flags); |
| 1229 | |
| 1230 | if (file->f_mode & FMODE_READ) { |
| 1231 | if (s->dma_adc.count >= (signed)s->dma_adc.dma_fragsize) |
| 1232 | mask |= POLLIN | POLLRDNORM; |
| 1233 | } |
| 1234 | if (file->f_mode & FMODE_WRITE) { |
| 1235 | if (s->dma_dac.mapped) { |
| 1236 | if (s->dma_dac.count >= |
| 1237 | (signed)s->dma_dac.dma_fragsize) |
| 1238 | mask |= POLLOUT | POLLWRNORM; |
| 1239 | } else { |
| 1240 | if ((signed) s->dma_dac.dmasize >= |
| 1241 | s->dma_dac.count + (signed)s->dma_dac.dma_fragsize) |
| 1242 | mask |= POLLOUT | POLLWRNORM; |
| 1243 | } |
| 1244 | } |
| 1245 | spin_unlock_irqrestore(&s->lock, flags); |
| 1246 | return mask; |
| 1247 | } |
| 1248 | |
| 1249 | static int |
| 1250 | au1550_mmap(struct file *file, struct vm_area_struct *vma) |
| 1251 | { |
| 1252 | struct au1550_state *s = (struct au1550_state *)file->private_data; |
| 1253 | struct dmabuf *db; |
| 1254 | unsigned long size; |
| 1255 | int ret = 0; |
| 1256 | |
| 1257 | lock_kernel(); |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 1258 | mutex_lock(&s->sem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1259 | if (vma->vm_flags & VM_WRITE) |
| 1260 | db = &s->dma_dac; |
| 1261 | else if (vma->vm_flags & VM_READ) |
| 1262 | db = &s->dma_adc; |
| 1263 | else { |
| 1264 | ret = -EINVAL; |
| 1265 | goto out; |
| 1266 | } |
| 1267 | if (vma->vm_pgoff != 0) { |
| 1268 | ret = -EINVAL; |
| 1269 | goto out; |
| 1270 | } |
| 1271 | size = vma->vm_end - vma->vm_start; |
| 1272 | if (size > (PAGE_SIZE << db->buforder)) { |
| 1273 | ret = -EINVAL; |
| 1274 | goto out; |
| 1275 | } |
| 1276 | if (remap_pfn_range(vma, vma->vm_start, page_to_pfn(virt_to_page(db->rawbuf)), |
| 1277 | size, vma->vm_page_prot)) { |
| 1278 | ret = -EAGAIN; |
| 1279 | goto out; |
| 1280 | } |
| 1281 | vma->vm_flags &= ~VM_IO; |
| 1282 | db->mapped = 1; |
| 1283 | out: |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 1284 | mutex_unlock(&s->sem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1285 | unlock_kernel(); |
| 1286 | return ret; |
| 1287 | } |
| 1288 | |
| 1289 | #ifdef DEBUG |
| 1290 | static struct ioctl_str_t { |
| 1291 | unsigned int cmd; |
| 1292 | const char *str; |
| 1293 | } ioctl_str[] = { |
| 1294 | {SNDCTL_DSP_RESET, "SNDCTL_DSP_RESET"}, |
| 1295 | {SNDCTL_DSP_SYNC, "SNDCTL_DSP_SYNC"}, |
| 1296 | {SNDCTL_DSP_SPEED, "SNDCTL_DSP_SPEED"}, |
| 1297 | {SNDCTL_DSP_STEREO, "SNDCTL_DSP_STEREO"}, |
| 1298 | {SNDCTL_DSP_GETBLKSIZE, "SNDCTL_DSP_GETBLKSIZE"}, |
| 1299 | {SNDCTL_DSP_SAMPLESIZE, "SNDCTL_DSP_SAMPLESIZE"}, |
| 1300 | {SNDCTL_DSP_CHANNELS, "SNDCTL_DSP_CHANNELS"}, |
| 1301 | {SOUND_PCM_WRITE_CHANNELS, "SOUND_PCM_WRITE_CHANNELS"}, |
| 1302 | {SOUND_PCM_WRITE_FILTER, "SOUND_PCM_WRITE_FILTER"}, |
| 1303 | {SNDCTL_DSP_POST, "SNDCTL_DSP_POST"}, |
| 1304 | {SNDCTL_DSP_SUBDIVIDE, "SNDCTL_DSP_SUBDIVIDE"}, |
| 1305 | {SNDCTL_DSP_SETFRAGMENT, "SNDCTL_DSP_SETFRAGMENT"}, |
| 1306 | {SNDCTL_DSP_GETFMTS, "SNDCTL_DSP_GETFMTS"}, |
| 1307 | {SNDCTL_DSP_SETFMT, "SNDCTL_DSP_SETFMT"}, |
| 1308 | {SNDCTL_DSP_GETOSPACE, "SNDCTL_DSP_GETOSPACE"}, |
| 1309 | {SNDCTL_DSP_GETISPACE, "SNDCTL_DSP_GETISPACE"}, |
| 1310 | {SNDCTL_DSP_NONBLOCK, "SNDCTL_DSP_NONBLOCK"}, |
| 1311 | {SNDCTL_DSP_GETCAPS, "SNDCTL_DSP_GETCAPS"}, |
| 1312 | {SNDCTL_DSP_GETTRIGGER, "SNDCTL_DSP_GETTRIGGER"}, |
| 1313 | {SNDCTL_DSP_SETTRIGGER, "SNDCTL_DSP_SETTRIGGER"}, |
| 1314 | {SNDCTL_DSP_GETIPTR, "SNDCTL_DSP_GETIPTR"}, |
| 1315 | {SNDCTL_DSP_GETOPTR, "SNDCTL_DSP_GETOPTR"}, |
| 1316 | {SNDCTL_DSP_MAPINBUF, "SNDCTL_DSP_MAPINBUF"}, |
| 1317 | {SNDCTL_DSP_MAPOUTBUF, "SNDCTL_DSP_MAPOUTBUF"}, |
| 1318 | {SNDCTL_DSP_SETSYNCRO, "SNDCTL_DSP_SETSYNCRO"}, |
| 1319 | {SNDCTL_DSP_SETDUPLEX, "SNDCTL_DSP_SETDUPLEX"}, |
| 1320 | {SNDCTL_DSP_GETODELAY, "SNDCTL_DSP_GETODELAY"}, |
| 1321 | {SNDCTL_DSP_GETCHANNELMASK, "SNDCTL_DSP_GETCHANNELMASK"}, |
| 1322 | {SNDCTL_DSP_BIND_CHANNEL, "SNDCTL_DSP_BIND_CHANNEL"}, |
| 1323 | {OSS_GETVERSION, "OSS_GETVERSION"}, |
| 1324 | {SOUND_PCM_READ_RATE, "SOUND_PCM_READ_RATE"}, |
| 1325 | {SOUND_PCM_READ_CHANNELS, "SOUND_PCM_READ_CHANNELS"}, |
| 1326 | {SOUND_PCM_READ_BITS, "SOUND_PCM_READ_BITS"}, |
| 1327 | {SOUND_PCM_READ_FILTER, "SOUND_PCM_READ_FILTER"} |
| 1328 | }; |
| 1329 | #endif |
| 1330 | |
| 1331 | static int |
| 1332 | dma_count_done(struct dmabuf *db) |
| 1333 | { |
| 1334 | if (db->stopped) |
| 1335 | return 0; |
| 1336 | |
| 1337 | return db->dma_fragsize - au1xxx_get_dma_residue(db->dmanr); |
| 1338 | } |
| 1339 | |
| 1340 | |
| 1341 | static int |
| 1342 | au1550_ioctl(struct inode *inode, struct file *file, unsigned int cmd, |
| 1343 | unsigned long arg) |
| 1344 | { |
| 1345 | struct au1550_state *s = (struct au1550_state *)file->private_data; |
| 1346 | unsigned long flags; |
| 1347 | audio_buf_info abinfo; |
| 1348 | count_info cinfo; |
| 1349 | int count; |
| 1350 | int val, mapped, ret, diff; |
| 1351 | |
| 1352 | mapped = ((file->f_mode & FMODE_WRITE) && s->dma_dac.mapped) || |
| 1353 | ((file->f_mode & FMODE_READ) && s->dma_adc.mapped); |
| 1354 | |
| 1355 | #ifdef DEBUG |
| 1356 | for (count=0; count<sizeof(ioctl_str)/sizeof(ioctl_str[0]); count++) { |
| 1357 | if (ioctl_str[count].cmd == cmd) |
| 1358 | break; |
| 1359 | } |
| 1360 | if (count < sizeof(ioctl_str) / sizeof(ioctl_str[0])) |
| 1361 | pr_debug("ioctl %s, arg=0x%lxn", ioctl_str[count].str, arg); |
| 1362 | else |
| 1363 | pr_debug("ioctl 0x%x unknown, arg=0x%lx\n", cmd, arg); |
| 1364 | #endif |
| 1365 | |
| 1366 | switch (cmd) { |
| 1367 | case OSS_GETVERSION: |
| 1368 | return put_user(SOUND_VERSION, (int *) arg); |
| 1369 | |
| 1370 | case SNDCTL_DSP_SYNC: |
| 1371 | if (file->f_mode & FMODE_WRITE) |
| 1372 | return drain_dac(s, file->f_flags & O_NONBLOCK); |
| 1373 | return 0; |
| 1374 | |
| 1375 | case SNDCTL_DSP_SETDUPLEX: |
| 1376 | return 0; |
| 1377 | |
| 1378 | case SNDCTL_DSP_GETCAPS: |
| 1379 | return put_user(DSP_CAP_DUPLEX | DSP_CAP_REALTIME | |
| 1380 | DSP_CAP_TRIGGER | DSP_CAP_MMAP, (int *)arg); |
| 1381 | |
| 1382 | case SNDCTL_DSP_RESET: |
| 1383 | if (file->f_mode & FMODE_WRITE) { |
| 1384 | stop_dac(s); |
| 1385 | synchronize_irq(); |
| 1386 | s->dma_dac.count = s->dma_dac.total_bytes = 0; |
| 1387 | s->dma_dac.nextIn = s->dma_dac.nextOut = |
| 1388 | s->dma_dac.rawbuf; |
| 1389 | } |
| 1390 | if (file->f_mode & FMODE_READ) { |
| 1391 | stop_adc(s); |
| 1392 | synchronize_irq(); |
| 1393 | s->dma_adc.count = s->dma_adc.total_bytes = 0; |
| 1394 | s->dma_adc.nextIn = s->dma_adc.nextOut = |
| 1395 | s->dma_adc.rawbuf; |
| 1396 | } |
| 1397 | return 0; |
| 1398 | |
| 1399 | case SNDCTL_DSP_SPEED: |
| 1400 | if (get_user(val, (int *) arg)) |
| 1401 | return -EFAULT; |
| 1402 | if (val >= 0) { |
| 1403 | if (file->f_mode & FMODE_READ) { |
| 1404 | stop_adc(s); |
| 1405 | set_adc_rate(s, val); |
| 1406 | } |
| 1407 | if (file->f_mode & FMODE_WRITE) { |
| 1408 | stop_dac(s); |
| 1409 | set_dac_rate(s, val); |
| 1410 | } |
| 1411 | if (s->open_mode & FMODE_READ) |
| 1412 | if ((ret = prog_dmabuf_adc(s))) |
| 1413 | return ret; |
| 1414 | if (s->open_mode & FMODE_WRITE) |
| 1415 | if ((ret = prog_dmabuf_dac(s))) |
| 1416 | return ret; |
| 1417 | } |
| 1418 | return put_user((file->f_mode & FMODE_READ) ? |
| 1419 | s->dma_adc.sample_rate : |
| 1420 | s->dma_dac.sample_rate, |
| 1421 | (int *)arg); |
| 1422 | |
| 1423 | case SNDCTL_DSP_STEREO: |
| 1424 | if (get_user(val, (int *) arg)) |
| 1425 | return -EFAULT; |
| 1426 | if (file->f_mode & FMODE_READ) { |
| 1427 | stop_adc(s); |
| 1428 | s->dma_adc.num_channels = val ? 2 : 1; |
| 1429 | if ((ret = prog_dmabuf_adc(s))) |
| 1430 | return ret; |
| 1431 | } |
| 1432 | if (file->f_mode & FMODE_WRITE) { |
| 1433 | stop_dac(s); |
| 1434 | s->dma_dac.num_channels = val ? 2 : 1; |
| 1435 | if (s->codec_ext_caps & AC97_EXT_DACS) { |
| 1436 | /* disable surround and center/lfe in AC'97 |
| 1437 | */ |
| 1438 | u16 ext_stat = rdcodec(s->codec, |
| 1439 | AC97_EXTENDED_STATUS); |
| 1440 | wrcodec(s->codec, AC97_EXTENDED_STATUS, |
| 1441 | ext_stat | (AC97_EXTSTAT_PRI | |
| 1442 | AC97_EXTSTAT_PRJ | |
| 1443 | AC97_EXTSTAT_PRK)); |
| 1444 | } |
| 1445 | if ((ret = prog_dmabuf_dac(s))) |
| 1446 | return ret; |
| 1447 | } |
| 1448 | return 0; |
| 1449 | |
| 1450 | case SNDCTL_DSP_CHANNELS: |
| 1451 | if (get_user(val, (int *) arg)) |
| 1452 | return -EFAULT; |
| 1453 | if (val != 0) { |
| 1454 | if (file->f_mode & FMODE_READ) { |
| 1455 | if (val < 0 || val > 2) |
| 1456 | return -EINVAL; |
| 1457 | stop_adc(s); |
| 1458 | s->dma_adc.num_channels = val; |
| 1459 | if ((ret = prog_dmabuf_adc(s))) |
| 1460 | return ret; |
| 1461 | } |
| 1462 | if (file->f_mode & FMODE_WRITE) { |
| 1463 | switch (val) { |
| 1464 | case 1: |
| 1465 | case 2: |
| 1466 | break; |
| 1467 | case 3: |
| 1468 | case 5: |
| 1469 | return -EINVAL; |
| 1470 | case 4: |
| 1471 | if (!(s->codec_ext_caps & |
| 1472 | AC97_EXTID_SDAC)) |
| 1473 | return -EINVAL; |
| 1474 | break; |
| 1475 | case 6: |
| 1476 | if ((s->codec_ext_caps & |
| 1477 | AC97_EXT_DACS) != AC97_EXT_DACS) |
| 1478 | return -EINVAL; |
| 1479 | break; |
| 1480 | default: |
| 1481 | return -EINVAL; |
| 1482 | } |
| 1483 | |
| 1484 | stop_dac(s); |
| 1485 | if (val <= 2 && |
| 1486 | (s->codec_ext_caps & AC97_EXT_DACS)) { |
| 1487 | /* disable surround and center/lfe |
| 1488 | * channels in AC'97 |
| 1489 | */ |
| 1490 | u16 ext_stat = |
| 1491 | rdcodec(s->codec, |
| 1492 | AC97_EXTENDED_STATUS); |
| 1493 | wrcodec(s->codec, |
| 1494 | AC97_EXTENDED_STATUS, |
| 1495 | ext_stat | (AC97_EXTSTAT_PRI | |
| 1496 | AC97_EXTSTAT_PRJ | |
| 1497 | AC97_EXTSTAT_PRK)); |
| 1498 | } else if (val >= 4) { |
| 1499 | /* enable surround, center/lfe |
| 1500 | * channels in AC'97 |
| 1501 | */ |
| 1502 | u16 ext_stat = |
| 1503 | rdcodec(s->codec, |
| 1504 | AC97_EXTENDED_STATUS); |
| 1505 | ext_stat &= ~AC97_EXTSTAT_PRJ; |
| 1506 | if (val == 6) |
| 1507 | ext_stat &= |
| 1508 | ~(AC97_EXTSTAT_PRI | |
| 1509 | AC97_EXTSTAT_PRK); |
| 1510 | wrcodec(s->codec, |
| 1511 | AC97_EXTENDED_STATUS, |
| 1512 | ext_stat); |
| 1513 | } |
| 1514 | |
| 1515 | s->dma_dac.num_channels = val; |
| 1516 | if ((ret = prog_dmabuf_dac(s))) |
| 1517 | return ret; |
| 1518 | } |
| 1519 | } |
| 1520 | return put_user(val, (int *) arg); |
| 1521 | |
| 1522 | case SNDCTL_DSP_GETFMTS: /* Returns a mask */ |
| 1523 | return put_user(AFMT_S16_LE | AFMT_U8, (int *) arg); |
| 1524 | |
| 1525 | case SNDCTL_DSP_SETFMT: /* Selects ONE fmt */ |
| 1526 | if (get_user(val, (int *) arg)) |
| 1527 | return -EFAULT; |
| 1528 | if (val != AFMT_QUERY) { |
| 1529 | if (file->f_mode & FMODE_READ) { |
| 1530 | stop_adc(s); |
| 1531 | if (val == AFMT_S16_LE) |
| 1532 | s->dma_adc.sample_size = 16; |
| 1533 | else { |
| 1534 | val = AFMT_U8; |
| 1535 | s->dma_adc.sample_size = 8; |
| 1536 | } |
| 1537 | if ((ret = prog_dmabuf_adc(s))) |
| 1538 | return ret; |
| 1539 | } |
| 1540 | if (file->f_mode & FMODE_WRITE) { |
| 1541 | stop_dac(s); |
| 1542 | if (val == AFMT_S16_LE) |
| 1543 | s->dma_dac.sample_size = 16; |
| 1544 | else { |
| 1545 | val = AFMT_U8; |
| 1546 | s->dma_dac.sample_size = 8; |
| 1547 | } |
| 1548 | if ((ret = prog_dmabuf_dac(s))) |
| 1549 | return ret; |
| 1550 | } |
| 1551 | } else { |
| 1552 | if (file->f_mode & FMODE_READ) |
| 1553 | val = (s->dma_adc.sample_size == 16) ? |
| 1554 | AFMT_S16_LE : AFMT_U8; |
| 1555 | else |
| 1556 | val = (s->dma_dac.sample_size == 16) ? |
| 1557 | AFMT_S16_LE : AFMT_U8; |
| 1558 | } |
| 1559 | return put_user(val, (int *) arg); |
| 1560 | |
| 1561 | case SNDCTL_DSP_POST: |
| 1562 | return 0; |
| 1563 | |
| 1564 | case SNDCTL_DSP_GETTRIGGER: |
| 1565 | val = 0; |
| 1566 | spin_lock_irqsave(&s->lock, flags); |
| 1567 | if (file->f_mode & FMODE_READ && !s->dma_adc.stopped) |
| 1568 | val |= PCM_ENABLE_INPUT; |
| 1569 | if (file->f_mode & FMODE_WRITE && !s->dma_dac.stopped) |
| 1570 | val |= PCM_ENABLE_OUTPUT; |
| 1571 | spin_unlock_irqrestore(&s->lock, flags); |
| 1572 | return put_user(val, (int *) arg); |
| 1573 | |
| 1574 | case SNDCTL_DSP_SETTRIGGER: |
| 1575 | if (get_user(val, (int *) arg)) |
| 1576 | return -EFAULT; |
| 1577 | if (file->f_mode & FMODE_READ) { |
Sergei Shtylylov | 7b66665 | 2005-12-15 12:34:30 -0800 | [diff] [blame] | 1578 | if (val & PCM_ENABLE_INPUT) { |
| 1579 | spin_lock_irqsave(&s->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1580 | start_adc(s); |
Sergei Shtylylov | 7b66665 | 2005-12-15 12:34:30 -0800 | [diff] [blame] | 1581 | spin_unlock_irqrestore(&s->lock, flags); |
| 1582 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1583 | stop_adc(s); |
| 1584 | } |
| 1585 | if (file->f_mode & FMODE_WRITE) { |
Sergei Shtylylov | 7b66665 | 2005-12-15 12:34:30 -0800 | [diff] [blame] | 1586 | if (val & PCM_ENABLE_OUTPUT) { |
| 1587 | spin_lock_irqsave(&s->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1588 | start_dac(s); |
Sergei Shtylylov | 7b66665 | 2005-12-15 12:34:30 -0800 | [diff] [blame] | 1589 | spin_unlock_irqrestore(&s->lock, flags); |
| 1590 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1591 | stop_dac(s); |
| 1592 | } |
| 1593 | return 0; |
| 1594 | |
| 1595 | case SNDCTL_DSP_GETOSPACE: |
| 1596 | if (!(file->f_mode & FMODE_WRITE)) |
| 1597 | return -EINVAL; |
| 1598 | abinfo.fragsize = s->dma_dac.fragsize; |
| 1599 | spin_lock_irqsave(&s->lock, flags); |
| 1600 | count = s->dma_dac.count; |
| 1601 | count -= dma_count_done(&s->dma_dac); |
| 1602 | spin_unlock_irqrestore(&s->lock, flags); |
| 1603 | if (count < 0) |
| 1604 | count = 0; |
| 1605 | abinfo.bytes = (s->dma_dac.dmasize - count) / |
| 1606 | s->dma_dac.cnt_factor; |
| 1607 | abinfo.fragstotal = s->dma_dac.numfrag; |
| 1608 | abinfo.fragments = abinfo.bytes >> s->dma_dac.fragshift; |
| 1609 | pr_debug("ioctl SNDCTL_DSP_GETOSPACE: bytes=%d, fragments=%d\n", abinfo.bytes, abinfo.fragments); |
| 1610 | return copy_to_user((void *) arg, &abinfo, |
| 1611 | sizeof(abinfo)) ? -EFAULT : 0; |
| 1612 | |
| 1613 | case SNDCTL_DSP_GETISPACE: |
| 1614 | if (!(file->f_mode & FMODE_READ)) |
| 1615 | return -EINVAL; |
| 1616 | abinfo.fragsize = s->dma_adc.fragsize; |
| 1617 | spin_lock_irqsave(&s->lock, flags); |
| 1618 | count = s->dma_adc.count; |
| 1619 | count += dma_count_done(&s->dma_adc); |
| 1620 | spin_unlock_irqrestore(&s->lock, flags); |
| 1621 | if (count < 0) |
| 1622 | count = 0; |
| 1623 | abinfo.bytes = count / s->dma_adc.cnt_factor; |
| 1624 | abinfo.fragstotal = s->dma_adc.numfrag; |
| 1625 | abinfo.fragments = abinfo.bytes >> s->dma_adc.fragshift; |
| 1626 | return copy_to_user((void *) arg, &abinfo, |
| 1627 | sizeof(abinfo)) ? -EFAULT : 0; |
| 1628 | |
| 1629 | case SNDCTL_DSP_NONBLOCK: |
| 1630 | file->f_flags |= O_NONBLOCK; |
| 1631 | return 0; |
| 1632 | |
| 1633 | case SNDCTL_DSP_GETODELAY: |
| 1634 | if (!(file->f_mode & FMODE_WRITE)) |
| 1635 | return -EINVAL; |
| 1636 | spin_lock_irqsave(&s->lock, flags); |
| 1637 | count = s->dma_dac.count; |
| 1638 | count -= dma_count_done(&s->dma_dac); |
| 1639 | spin_unlock_irqrestore(&s->lock, flags); |
| 1640 | if (count < 0) |
| 1641 | count = 0; |
| 1642 | count /= s->dma_dac.cnt_factor; |
| 1643 | return put_user(count, (int *) arg); |
| 1644 | |
| 1645 | case SNDCTL_DSP_GETIPTR: |
| 1646 | if (!(file->f_mode & FMODE_READ)) |
| 1647 | return -EINVAL; |
| 1648 | spin_lock_irqsave(&s->lock, flags); |
| 1649 | cinfo.bytes = s->dma_adc.total_bytes; |
| 1650 | count = s->dma_adc.count; |
| 1651 | if (!s->dma_adc.stopped) { |
| 1652 | diff = dma_count_done(&s->dma_adc); |
| 1653 | count += diff; |
| 1654 | cinfo.bytes += diff; |
| 1655 | cinfo.ptr = virt_to_phys(s->dma_adc.nextIn) + diff - |
| 1656 | virt_to_phys(s->dma_adc.rawbuf); |
| 1657 | } else |
| 1658 | cinfo.ptr = virt_to_phys(s->dma_adc.nextIn) - |
| 1659 | virt_to_phys(s->dma_adc.rawbuf); |
| 1660 | if (s->dma_adc.mapped) |
| 1661 | s->dma_adc.count &= (s->dma_adc.dma_fragsize-1); |
| 1662 | spin_unlock_irqrestore(&s->lock, flags); |
| 1663 | if (count < 0) |
| 1664 | count = 0; |
| 1665 | cinfo.blocks = count >> s->dma_adc.fragshift; |
| 1666 | return copy_to_user((void *) arg, &cinfo, sizeof(cinfo)); |
| 1667 | |
| 1668 | case SNDCTL_DSP_GETOPTR: |
| 1669 | if (!(file->f_mode & FMODE_READ)) |
| 1670 | return -EINVAL; |
| 1671 | spin_lock_irqsave(&s->lock, flags); |
| 1672 | cinfo.bytes = s->dma_dac.total_bytes; |
| 1673 | count = s->dma_dac.count; |
| 1674 | if (!s->dma_dac.stopped) { |
| 1675 | diff = dma_count_done(&s->dma_dac); |
| 1676 | count -= diff; |
| 1677 | cinfo.bytes += diff; |
| 1678 | cinfo.ptr = virt_to_phys(s->dma_dac.nextOut) + diff - |
| 1679 | virt_to_phys(s->dma_dac.rawbuf); |
| 1680 | } else |
| 1681 | cinfo.ptr = virt_to_phys(s->dma_dac.nextOut) - |
| 1682 | virt_to_phys(s->dma_dac.rawbuf); |
| 1683 | if (s->dma_dac.mapped) |
| 1684 | s->dma_dac.count &= (s->dma_dac.dma_fragsize-1); |
| 1685 | spin_unlock_irqrestore(&s->lock, flags); |
| 1686 | if (count < 0) |
| 1687 | count = 0; |
| 1688 | cinfo.blocks = count >> s->dma_dac.fragshift; |
| 1689 | return copy_to_user((void *) arg, &cinfo, sizeof(cinfo)); |
| 1690 | |
| 1691 | case SNDCTL_DSP_GETBLKSIZE: |
| 1692 | if (file->f_mode & FMODE_WRITE) |
| 1693 | return put_user(s->dma_dac.fragsize, (int *) arg); |
| 1694 | else |
| 1695 | return put_user(s->dma_adc.fragsize, (int *) arg); |
| 1696 | |
| 1697 | case SNDCTL_DSP_SETFRAGMENT: |
| 1698 | if (get_user(val, (int *) arg)) |
| 1699 | return -EFAULT; |
| 1700 | if (file->f_mode & FMODE_READ) { |
| 1701 | stop_adc(s); |
| 1702 | s->dma_adc.ossfragshift = val & 0xffff; |
| 1703 | s->dma_adc.ossmaxfrags = (val >> 16) & 0xffff; |
| 1704 | if (s->dma_adc.ossfragshift < 4) |
| 1705 | s->dma_adc.ossfragshift = 4; |
| 1706 | if (s->dma_adc.ossfragshift > 15) |
| 1707 | s->dma_adc.ossfragshift = 15; |
| 1708 | if (s->dma_adc.ossmaxfrags < 4) |
| 1709 | s->dma_adc.ossmaxfrags = 4; |
| 1710 | if ((ret = prog_dmabuf_adc(s))) |
| 1711 | return ret; |
| 1712 | } |
| 1713 | if (file->f_mode & FMODE_WRITE) { |
| 1714 | stop_dac(s); |
| 1715 | s->dma_dac.ossfragshift = val & 0xffff; |
| 1716 | s->dma_dac.ossmaxfrags = (val >> 16) & 0xffff; |
| 1717 | if (s->dma_dac.ossfragshift < 4) |
| 1718 | s->dma_dac.ossfragshift = 4; |
| 1719 | if (s->dma_dac.ossfragshift > 15) |
| 1720 | s->dma_dac.ossfragshift = 15; |
| 1721 | if (s->dma_dac.ossmaxfrags < 4) |
| 1722 | s->dma_dac.ossmaxfrags = 4; |
| 1723 | if ((ret = prog_dmabuf_dac(s))) |
| 1724 | return ret; |
| 1725 | } |
| 1726 | return 0; |
| 1727 | |
| 1728 | case SNDCTL_DSP_SUBDIVIDE: |
| 1729 | if ((file->f_mode & FMODE_READ && s->dma_adc.subdivision) || |
| 1730 | (file->f_mode & FMODE_WRITE && s->dma_dac.subdivision)) |
| 1731 | return -EINVAL; |
| 1732 | if (get_user(val, (int *) arg)) |
| 1733 | return -EFAULT; |
| 1734 | if (val != 1 && val != 2 && val != 4) |
| 1735 | return -EINVAL; |
| 1736 | if (file->f_mode & FMODE_READ) { |
| 1737 | stop_adc(s); |
| 1738 | s->dma_adc.subdivision = val; |
| 1739 | if ((ret = prog_dmabuf_adc(s))) |
| 1740 | return ret; |
| 1741 | } |
| 1742 | if (file->f_mode & FMODE_WRITE) { |
| 1743 | stop_dac(s); |
| 1744 | s->dma_dac.subdivision = val; |
| 1745 | if ((ret = prog_dmabuf_dac(s))) |
| 1746 | return ret; |
| 1747 | } |
| 1748 | return 0; |
| 1749 | |
| 1750 | case SOUND_PCM_READ_RATE: |
| 1751 | return put_user((file->f_mode & FMODE_READ) ? |
| 1752 | s->dma_adc.sample_rate : |
| 1753 | s->dma_dac.sample_rate, |
| 1754 | (int *)arg); |
| 1755 | |
| 1756 | case SOUND_PCM_READ_CHANNELS: |
| 1757 | if (file->f_mode & FMODE_READ) |
| 1758 | return put_user(s->dma_adc.num_channels, (int *)arg); |
| 1759 | else |
| 1760 | return put_user(s->dma_dac.num_channels, (int *)arg); |
| 1761 | |
| 1762 | case SOUND_PCM_READ_BITS: |
| 1763 | if (file->f_mode & FMODE_READ) |
| 1764 | return put_user(s->dma_adc.sample_size, (int *)arg); |
| 1765 | else |
| 1766 | return put_user(s->dma_dac.sample_size, (int *)arg); |
| 1767 | |
| 1768 | case SOUND_PCM_WRITE_FILTER: |
| 1769 | case SNDCTL_DSP_SETSYNCRO: |
| 1770 | case SOUND_PCM_READ_FILTER: |
| 1771 | return -EINVAL; |
| 1772 | } |
| 1773 | |
| 1774 | return mixdev_ioctl(s->codec, cmd, arg); |
| 1775 | } |
| 1776 | |
| 1777 | |
| 1778 | static int |
| 1779 | au1550_open(struct inode *inode, struct file *file) |
| 1780 | { |
| 1781 | int minor = MINOR(inode->i_rdev); |
| 1782 | DECLARE_WAITQUEUE(wait, current); |
| 1783 | struct au1550_state *s = &au1550_state; |
| 1784 | int ret; |
| 1785 | |
| 1786 | #ifdef DEBUG |
| 1787 | if (file->f_flags & O_NONBLOCK) |
| 1788 | pr_debug("open: non-blocking\n"); |
| 1789 | else |
| 1790 | pr_debug("open: blocking\n"); |
| 1791 | #endif |
| 1792 | |
| 1793 | file->private_data = s; |
| 1794 | /* wait for device to become free */ |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 1795 | mutex_lock(&s->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1796 | while (s->open_mode & file->f_mode) { |
| 1797 | if (file->f_flags & O_NONBLOCK) { |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 1798 | mutex_unlock(&s->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1799 | return -EBUSY; |
| 1800 | } |
| 1801 | add_wait_queue(&s->open_wait, &wait); |
| 1802 | __set_current_state(TASK_INTERRUPTIBLE); |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 1803 | mutex_unlock(&s->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1804 | schedule(); |
| 1805 | remove_wait_queue(&s->open_wait, &wait); |
| 1806 | set_current_state(TASK_RUNNING); |
| 1807 | if (signal_pending(current)) |
| 1808 | return -ERESTARTSYS; |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 1809 | mutex_lock(&s->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1810 | } |
| 1811 | |
| 1812 | stop_dac(s); |
| 1813 | stop_adc(s); |
| 1814 | |
| 1815 | if (file->f_mode & FMODE_READ) { |
| 1816 | s->dma_adc.ossfragshift = s->dma_adc.ossmaxfrags = |
| 1817 | s->dma_adc.subdivision = s->dma_adc.total_bytes = 0; |
| 1818 | s->dma_adc.num_channels = 1; |
| 1819 | s->dma_adc.sample_size = 8; |
| 1820 | set_adc_rate(s, 8000); |
| 1821 | if ((minor & 0xf) == SND_DEV_DSP16) |
| 1822 | s->dma_adc.sample_size = 16; |
| 1823 | } |
| 1824 | |
| 1825 | if (file->f_mode & FMODE_WRITE) { |
| 1826 | s->dma_dac.ossfragshift = s->dma_dac.ossmaxfrags = |
| 1827 | s->dma_dac.subdivision = s->dma_dac.total_bytes = 0; |
| 1828 | s->dma_dac.num_channels = 1; |
| 1829 | s->dma_dac.sample_size = 8; |
| 1830 | set_dac_rate(s, 8000); |
| 1831 | if ((minor & 0xf) == SND_DEV_DSP16) |
| 1832 | s->dma_dac.sample_size = 16; |
| 1833 | } |
| 1834 | |
| 1835 | if (file->f_mode & FMODE_READ) { |
| 1836 | if ((ret = prog_dmabuf_adc(s))) |
| 1837 | return ret; |
| 1838 | } |
| 1839 | if (file->f_mode & FMODE_WRITE) { |
| 1840 | if ((ret = prog_dmabuf_dac(s))) |
| 1841 | return ret; |
| 1842 | } |
| 1843 | |
| 1844 | s->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE); |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 1845 | mutex_unlock(&s->open_mutex); |
| 1846 | mutex_init(&s->sem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1847 | return 0; |
| 1848 | } |
| 1849 | |
| 1850 | static int |
| 1851 | au1550_release(struct inode *inode, struct file *file) |
| 1852 | { |
| 1853 | struct au1550_state *s = (struct au1550_state *)file->private_data; |
| 1854 | |
| 1855 | lock_kernel(); |
| 1856 | |
| 1857 | if (file->f_mode & FMODE_WRITE) { |
| 1858 | unlock_kernel(); |
| 1859 | drain_dac(s, file->f_flags & O_NONBLOCK); |
| 1860 | lock_kernel(); |
| 1861 | } |
| 1862 | |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 1863 | mutex_lock(&s->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1864 | if (file->f_mode & FMODE_WRITE) { |
| 1865 | stop_dac(s); |
| 1866 | kfree(s->dma_dac.rawbuf); |
| 1867 | s->dma_dac.rawbuf = NULL; |
| 1868 | } |
| 1869 | if (file->f_mode & FMODE_READ) { |
| 1870 | stop_adc(s); |
| 1871 | kfree(s->dma_adc.rawbuf); |
| 1872 | s->dma_adc.rawbuf = NULL; |
| 1873 | } |
| 1874 | s->open_mode &= ((~file->f_mode) & (FMODE_READ|FMODE_WRITE)); |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 1875 | mutex_unlock(&s->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1876 | wake_up(&s->open_wait); |
| 1877 | unlock_kernel(); |
| 1878 | return 0; |
| 1879 | } |
| 1880 | |
| 1881 | static /*const */ struct file_operations au1550_audio_fops = { |
| 1882 | owner: THIS_MODULE, |
| 1883 | llseek: au1550_llseek, |
| 1884 | read: au1550_read, |
| 1885 | write: au1550_write, |
| 1886 | poll: au1550_poll, |
| 1887 | ioctl: au1550_ioctl, |
| 1888 | mmap: au1550_mmap, |
| 1889 | open: au1550_open, |
| 1890 | release: au1550_release, |
| 1891 | }; |
| 1892 | |
| 1893 | MODULE_AUTHOR("Advanced Micro Devices (AMD), dan@embeddededge.com"); |
| 1894 | MODULE_DESCRIPTION("Au1550 AC97 Audio Driver"); |
| 1895 | |
| 1896 | static int __devinit |
| 1897 | au1550_probe(void) |
| 1898 | { |
| 1899 | struct au1550_state *s = &au1550_state; |
| 1900 | int val; |
| 1901 | |
| 1902 | memset(s, 0, sizeof(struct au1550_state)); |
| 1903 | |
| 1904 | init_waitqueue_head(&s->dma_adc.wait); |
| 1905 | init_waitqueue_head(&s->dma_dac.wait); |
| 1906 | init_waitqueue_head(&s->open_wait); |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 1907 | mutex_init(&s->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1908 | spin_lock_init(&s->lock); |
| 1909 | |
| 1910 | s->codec = ac97_alloc_codec(); |
| 1911 | if(s->codec == NULL) { |
| 1912 | err("Out of memory"); |
| 1913 | return -1; |
| 1914 | } |
| 1915 | s->codec->private_data = s; |
| 1916 | s->codec->id = 0; |
| 1917 | s->codec->codec_read = rdcodec; |
| 1918 | s->codec->codec_write = wrcodec; |
| 1919 | s->codec->codec_wait = waitcodec; |
| 1920 | |
| 1921 | if (!request_mem_region(CPHYSADDR(AC97_PSC_SEL), |
| 1922 | 0x30, "Au1550 AC97")) { |
| 1923 | err("AC'97 ports in use"); |
| 1924 | } |
| 1925 | |
| 1926 | /* Allocate the DMA Channels |
| 1927 | */ |
| 1928 | if ((s->dma_dac.dmanr = au1xxx_dbdma_chan_alloc(DBDMA_MEM_CHAN, |
| 1929 | DBDMA_AC97_TX_CHAN, dac_dma_interrupt, (void *)s)) == 0) { |
| 1930 | err("Can't get DAC DMA"); |
| 1931 | goto err_dma1; |
| 1932 | } |
| 1933 | au1xxx_dbdma_set_devwidth(s->dma_dac.dmanr, 16); |
| 1934 | if (au1xxx_dbdma_ring_alloc(s->dma_dac.dmanr, |
| 1935 | NUM_DBDMA_DESCRIPTORS) == 0) { |
| 1936 | err("Can't get DAC DMA descriptors"); |
| 1937 | goto err_dma1; |
| 1938 | } |
| 1939 | |
| 1940 | if ((s->dma_adc.dmanr = au1xxx_dbdma_chan_alloc(DBDMA_AC97_RX_CHAN, |
| 1941 | DBDMA_MEM_CHAN, adc_dma_interrupt, (void *)s)) == 0) { |
| 1942 | err("Can't get ADC DMA"); |
| 1943 | goto err_dma2; |
| 1944 | } |
| 1945 | au1xxx_dbdma_set_devwidth(s->dma_adc.dmanr, 16); |
| 1946 | if (au1xxx_dbdma_ring_alloc(s->dma_adc.dmanr, |
| 1947 | NUM_DBDMA_DESCRIPTORS) == 0) { |
| 1948 | err("Can't get ADC DMA descriptors"); |
| 1949 | goto err_dma2; |
| 1950 | } |
| 1951 | |
| 1952 | pr_info("DAC: DMA%d, ADC: DMA%d", DBDMA_AC97_TX_CHAN, DBDMA_AC97_RX_CHAN); |
| 1953 | |
| 1954 | /* register devices */ |
| 1955 | |
| 1956 | if ((s->dev_audio = register_sound_dsp(&au1550_audio_fops, -1)) < 0) |
| 1957 | goto err_dev1; |
| 1958 | if ((s->codec->dev_mixer = |
| 1959 | register_sound_mixer(&au1550_mixer_fops, -1)) < 0) |
| 1960 | goto err_dev2; |
| 1961 | |
| 1962 | /* The GPIO for the appropriate PSC was configured by the |
| 1963 | * board specific start up. |
| 1964 | * |
| 1965 | * configure PSC for AC'97 |
| 1966 | */ |
| 1967 | au_writel(0, AC97_PSC_CTRL); /* Disable PSC */ |
| 1968 | au_sync(); |
| 1969 | au_writel((PSC_SEL_CLK_SERCLK | PSC_SEL_PS_AC97MODE), AC97_PSC_SEL); |
| 1970 | au_sync(); |
| 1971 | |
| 1972 | /* cold reset the AC'97 |
| 1973 | */ |
| 1974 | au_writel(PSC_AC97RST_RST, PSC_AC97RST); |
| 1975 | au_sync(); |
| 1976 | au1550_delay(10); |
| 1977 | au_writel(0, PSC_AC97RST); |
| 1978 | au_sync(); |
| 1979 | |
| 1980 | /* need to delay around 500msec(bleech) to give |
| 1981 | some CODECs enough time to wakeup */ |
| 1982 | au1550_delay(500); |
| 1983 | |
| 1984 | /* warm reset the AC'97 to start the bitclk |
| 1985 | */ |
| 1986 | au_writel(PSC_AC97RST_SNC, PSC_AC97RST); |
| 1987 | au_sync(); |
| 1988 | udelay(100); |
| 1989 | au_writel(0, PSC_AC97RST); |
| 1990 | au_sync(); |
| 1991 | |
| 1992 | /* Enable PSC |
| 1993 | */ |
| 1994 | au_writel(PSC_CTRL_ENABLE, AC97_PSC_CTRL); |
| 1995 | au_sync(); |
| 1996 | |
| 1997 | /* Wait for PSC ready. |
| 1998 | */ |
| 1999 | do { |
Sergei Shtylylov | 05090fc | 2006-01-05 22:50:39 -0800 | [diff] [blame] | 2000 | val = au_readl(PSC_AC97STAT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2001 | au_sync(); |
| 2002 | } while ((val & PSC_AC97STAT_SR) == 0); |
| 2003 | |
| 2004 | /* Configure AC97 controller. |
| 2005 | * Deep FIFO, 16-bit sample, DMA, make sure DMA matches fifo size. |
| 2006 | */ |
| 2007 | val = PSC_AC97CFG_SET_LEN(16); |
| 2008 | val |= PSC_AC97CFG_RT_FIFO8 | PSC_AC97CFG_TT_FIFO8; |
| 2009 | |
| 2010 | /* Enable device so we can at least |
| 2011 | * talk over the AC-link. |
| 2012 | */ |
| 2013 | au_writel(val, PSC_AC97CFG); |
| 2014 | au_writel(PSC_AC97MSK_ALLMASK, PSC_AC97MSK); |
| 2015 | au_sync(); |
| 2016 | val |= PSC_AC97CFG_DE_ENABLE; |
| 2017 | au_writel(val, PSC_AC97CFG); |
| 2018 | au_sync(); |
| 2019 | |
| 2020 | /* Wait for Device ready. |
| 2021 | */ |
| 2022 | do { |
Sergei Shtylylov | 05090fc | 2006-01-05 22:50:39 -0800 | [diff] [blame] | 2023 | val = au_readl(PSC_AC97STAT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2024 | au_sync(); |
| 2025 | } while ((val & PSC_AC97STAT_DR) == 0); |
| 2026 | |
| 2027 | /* codec init */ |
| 2028 | if (!ac97_probe_codec(s->codec)) |
| 2029 | goto err_dev3; |
| 2030 | |
| 2031 | s->codec_base_caps = rdcodec(s->codec, AC97_RESET); |
| 2032 | s->codec_ext_caps = rdcodec(s->codec, AC97_EXTENDED_ID); |
| 2033 | pr_info("AC'97 Base/Extended ID = %04x/%04x", |
| 2034 | s->codec_base_caps, s->codec_ext_caps); |
| 2035 | |
| 2036 | if (!(s->codec_ext_caps & AC97_EXTID_VRA)) { |
| 2037 | /* codec does not support VRA |
| 2038 | */ |
| 2039 | s->no_vra = 1; |
| 2040 | } else if (!vra) { |
| 2041 | /* Boot option says disable VRA |
| 2042 | */ |
| 2043 | u16 ac97_extstat = rdcodec(s->codec, AC97_EXTENDED_STATUS); |
| 2044 | wrcodec(s->codec, AC97_EXTENDED_STATUS, |
| 2045 | ac97_extstat & ~AC97_EXTSTAT_VRA); |
| 2046 | s->no_vra = 1; |
| 2047 | } |
| 2048 | if (s->no_vra) |
| 2049 | pr_info("no VRA, interpolating and decimating"); |
| 2050 | |
| 2051 | /* set mic to be the recording source */ |
| 2052 | val = SOUND_MASK_MIC; |
| 2053 | mixdev_ioctl(s->codec, SOUND_MIXER_WRITE_RECSRC, |
| 2054 | (unsigned long) &val); |
| 2055 | |
| 2056 | return 0; |
| 2057 | |
| 2058 | err_dev3: |
| 2059 | unregister_sound_mixer(s->codec->dev_mixer); |
| 2060 | err_dev2: |
| 2061 | unregister_sound_dsp(s->dev_audio); |
| 2062 | err_dev1: |
| 2063 | au1xxx_dbdma_chan_free(s->dma_adc.dmanr); |
| 2064 | err_dma2: |
| 2065 | au1xxx_dbdma_chan_free(s->dma_dac.dmanr); |
| 2066 | err_dma1: |
| 2067 | release_mem_region(CPHYSADDR(AC97_PSC_SEL), 0x30); |
| 2068 | |
| 2069 | ac97_release_codec(s->codec); |
| 2070 | return -1; |
| 2071 | } |
| 2072 | |
| 2073 | static void __devinit |
| 2074 | au1550_remove(void) |
| 2075 | { |
| 2076 | struct au1550_state *s = &au1550_state; |
| 2077 | |
| 2078 | if (!s) |
| 2079 | return; |
| 2080 | synchronize_irq(); |
| 2081 | au1xxx_dbdma_chan_free(s->dma_adc.dmanr); |
| 2082 | au1xxx_dbdma_chan_free(s->dma_dac.dmanr); |
| 2083 | release_mem_region(CPHYSADDR(AC97_PSC_SEL), 0x30); |
| 2084 | unregister_sound_dsp(s->dev_audio); |
| 2085 | unregister_sound_mixer(s->codec->dev_mixer); |
| 2086 | ac97_release_codec(s->codec); |
| 2087 | } |
| 2088 | |
| 2089 | static int __init |
| 2090 | init_au1550(void) |
| 2091 | { |
| 2092 | return au1550_probe(); |
| 2093 | } |
| 2094 | |
| 2095 | static void __exit |
| 2096 | cleanup_au1550(void) |
| 2097 | { |
| 2098 | au1550_remove(); |
| 2099 | } |
| 2100 | |
| 2101 | module_init(init_au1550); |
| 2102 | module_exit(cleanup_au1550); |
| 2103 | |
| 2104 | #ifndef MODULE |
| 2105 | |
| 2106 | static int __init |
| 2107 | au1550_setup(char *options) |
| 2108 | { |
| 2109 | char *this_opt; |
| 2110 | |
| 2111 | if (!options || !*options) |
| 2112 | return 0; |
| 2113 | |
| 2114 | while ((this_opt = strsep(&options, ","))) { |
| 2115 | if (!*this_opt) |
| 2116 | continue; |
| 2117 | if (!strncmp(this_opt, "vra", 3)) { |
| 2118 | vra = 1; |
| 2119 | } |
| 2120 | } |
| 2121 | |
| 2122 | return 1; |
| 2123 | } |
| 2124 | |
| 2125 | __setup("au1550_audio=", au1550_setup); |
| 2126 | |
| 2127 | #endif /* MODULE */ |