Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Driver for Sound Core PDAudioCF soundcards |
| 3 | * |
| 4 | * PCM part |
| 5 | * |
| 6 | * Copyright (c) 2003 by Jaroslav Kysela <perex@suse.cz> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | */ |
| 22 | |
| 23 | #include <sound/driver.h> |
| 24 | #include <linux/slab.h> |
| 25 | #include <linux/vmalloc.h> |
| 26 | #include <linux/delay.h> |
| 27 | #include <sound/core.h> |
| 28 | #include <sound/asoundef.h> |
| 29 | #include "pdaudiocf.h" |
| 30 | |
| 31 | |
| 32 | /* |
| 33 | * we use a vmalloc'ed (sg-)buffer |
| 34 | */ |
| 35 | |
| 36 | /* get the physical page pointer on the given offset */ |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 37 | static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs, unsigned long offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | { |
| 39 | void *pageptr = subs->runtime->dma_area + offset; |
| 40 | return vmalloc_to_page(pageptr); |
| 41 | } |
| 42 | |
| 43 | /* |
| 44 | * hw_params callback |
| 45 | * NOTE: this may be called not only once per pcm open! |
| 46 | */ |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 47 | static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, size_t size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | { |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 49 | struct snd_pcm_runtime *runtime = subs->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | if (runtime->dma_area) { |
| 51 | if (runtime->dma_bytes >= size) |
| 52 | return 0; /* already enough large */ |
Takashi Iwai | b1d5776 | 2005-10-10 11:56:31 +0200 | [diff] [blame] | 53 | vfree(runtime->dma_area); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | } |
Takashi Iwai | b1d5776 | 2005-10-10 11:56:31 +0200 | [diff] [blame] | 55 | runtime->dma_area = vmalloc_32(size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | if (! runtime->dma_area) |
| 57 | return -ENOMEM; |
| 58 | runtime->dma_bytes = size; |
| 59 | return 0; |
| 60 | } |
| 61 | |
| 62 | /* |
| 63 | * hw_free callback |
| 64 | * NOTE: this may be called not only once per pcm open! |
| 65 | */ |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 66 | static int snd_pcm_free_vmalloc_buffer(struct snd_pcm_substream *subs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | { |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 68 | struct snd_pcm_runtime *runtime = subs->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | if (runtime->dma_area) { |
Takashi Iwai | b1d5776 | 2005-10-10 11:56:31 +0200 | [diff] [blame] | 70 | vfree(runtime->dma_area); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | runtime->dma_area = NULL; |
| 72 | } |
| 73 | return 0; |
| 74 | } |
| 75 | |
| 76 | /* |
| 77 | * clear the SRAM contents |
| 78 | */ |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 79 | static int pdacf_pcm_clear_sram(struct snd_pdacf *chip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | { |
| 81 | int max_loop = 64 * 1024; |
| 82 | |
| 83 | while (inw(chip->port + PDAUDIOCF_REG_RDP) != inw(chip->port + PDAUDIOCF_REG_WDP)) { |
| 84 | if (max_loop-- < 0) |
| 85 | return -EIO; |
| 86 | inw(chip->port + PDAUDIOCF_REG_MD); |
| 87 | } |
| 88 | return 0; |
| 89 | } |
| 90 | |
| 91 | /* |
| 92 | * pdacf_pcm_trigger - trigger callback for capture |
| 93 | */ |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 94 | static int pdacf_pcm_trigger(struct snd_pcm_substream *subs, int cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | { |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 96 | struct snd_pdacf *chip = snd_pcm_substream_chip(subs); |
| 97 | struct snd_pcm_runtime *runtime = subs->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | int inc, ret = 0, rate; |
| 99 | unsigned short mask, val, tmp; |
| 100 | |
| 101 | if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE) |
| 102 | return -EBUSY; |
| 103 | |
| 104 | switch (cmd) { |
| 105 | case SNDRV_PCM_TRIGGER_START: |
| 106 | chip->pcm_hwptr = 0; |
| 107 | chip->pcm_tdone = 0; |
| 108 | /* fall thru */ |
| 109 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| 110 | case SNDRV_PCM_TRIGGER_RESUME: |
| 111 | mask = 0; |
| 112 | val = PDAUDIOCF_RECORD; |
| 113 | inc = 1; |
| 114 | rate = snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_STAT|AK4117_CHECK_NO_RATE); |
| 115 | break; |
| 116 | case SNDRV_PCM_TRIGGER_STOP: |
| 117 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| 118 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 119 | mask = PDAUDIOCF_RECORD; |
| 120 | val = 0; |
| 121 | inc = -1; |
| 122 | rate = 0; |
| 123 | break; |
| 124 | default: |
| 125 | return -EINVAL; |
| 126 | } |
| 127 | spin_lock(&chip->reg_lock); |
| 128 | chip->pcm_running += inc; |
| 129 | tmp = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR); |
| 130 | if (chip->pcm_running) { |
| 131 | if ((chip->ak4117->rcs0 & AK4117_UNLCK) || runtime->rate != rate) { |
| 132 | chip->pcm_running -= inc; |
| 133 | ret = -EIO; |
| 134 | goto __end; |
| 135 | } |
| 136 | } |
| 137 | tmp &= ~mask; |
| 138 | tmp |= val; |
| 139 | pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, tmp); |
| 140 | __end: |
| 141 | spin_unlock(&chip->reg_lock); |
| 142 | snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_RATE); |
| 143 | return ret; |
| 144 | } |
| 145 | |
| 146 | /* |
| 147 | * pdacf_pcm_hw_params - hw_params callback for playback and capture |
| 148 | */ |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 149 | static int pdacf_pcm_hw_params(struct snd_pcm_substream *subs, |
| 150 | struct snd_pcm_hw_params *hw_params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | { |
| 152 | return snd_pcm_alloc_vmalloc_buffer(subs, params_buffer_bytes(hw_params)); |
| 153 | } |
| 154 | |
| 155 | /* |
| 156 | * pdacf_pcm_hw_free - hw_free callback for playback and capture |
| 157 | */ |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 158 | static int pdacf_pcm_hw_free(struct snd_pcm_substream *subs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | { |
| 160 | return snd_pcm_free_vmalloc_buffer(subs); |
| 161 | } |
| 162 | |
| 163 | /* |
| 164 | * pdacf_pcm_prepare - prepare callback for playback and capture |
| 165 | */ |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 166 | static int pdacf_pcm_prepare(struct snd_pcm_substream *subs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | { |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 168 | struct snd_pdacf *chip = snd_pcm_substream_chip(subs); |
| 169 | struct snd_pcm_runtime *runtime = subs->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | u16 val, nval, aval; |
| 171 | |
| 172 | if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE) |
| 173 | return -EBUSY; |
| 174 | |
| 175 | chip->pcm_channels = runtime->channels; |
| 176 | |
| 177 | chip->pcm_little = snd_pcm_format_little_endian(runtime->format) > 0; |
| 178 | #ifdef SNDRV_LITTLE_ENDIAN |
| 179 | chip->pcm_swab = snd_pcm_format_big_endian(runtime->format) > 0; |
| 180 | #else |
| 181 | chip->pcm_swab = chip->pcm_little; |
| 182 | #endif |
| 183 | |
| 184 | if (snd_pcm_format_unsigned(runtime->format)) |
| 185 | chip->pcm_xor = 0x80008000; |
| 186 | |
| 187 | if (pdacf_pcm_clear_sram(chip) < 0) |
| 188 | return -EIO; |
| 189 | |
| 190 | val = nval = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR); |
| 191 | nval &= ~(PDAUDIOCF_DATAFMT0|PDAUDIOCF_DATAFMT1); |
| 192 | switch (runtime->format) { |
| 193 | case SNDRV_PCM_FORMAT_S16_LE: |
| 194 | case SNDRV_PCM_FORMAT_S16_BE: |
| 195 | break; |
| 196 | default: /* 24-bit */ |
| 197 | nval |= PDAUDIOCF_DATAFMT0 | PDAUDIOCF_DATAFMT1; |
| 198 | break; |
| 199 | } |
| 200 | aval = 0; |
| 201 | chip->pcm_sample = 4; |
| 202 | switch (runtime->format) { |
| 203 | case SNDRV_PCM_FORMAT_S16_LE: |
| 204 | case SNDRV_PCM_FORMAT_S16_BE: |
| 205 | aval = AK4117_DIF_16R; |
| 206 | chip->pcm_frame = 2; |
| 207 | chip->pcm_sample = 2; |
| 208 | break; |
| 209 | case SNDRV_PCM_FORMAT_S24_3LE: |
| 210 | case SNDRV_PCM_FORMAT_S24_3BE: |
| 211 | chip->pcm_sample = 3; |
| 212 | /* fall trough */ |
| 213 | default: /* 24-bit */ |
| 214 | aval = AK4117_DIF_24R; |
| 215 | chip->pcm_frame = 3; |
| 216 | chip->pcm_xor &= 0xffff0000; |
| 217 | break; |
| 218 | } |
| 219 | |
| 220 | if (val != nval) { |
| 221 | snd_ak4117_reg_write(chip->ak4117, AK4117_REG_IO, AK4117_DIF2|AK4117_DIF1|AK4117_DIF0, aval); |
| 222 | pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, nval); |
| 223 | } |
| 224 | |
| 225 | val = pdacf_reg_read(chip, PDAUDIOCF_REG_IER); |
| 226 | val &= ~(PDAUDIOCF_IRQLVLEN1); |
| 227 | val |= PDAUDIOCF_IRQLVLEN0; |
| 228 | pdacf_reg_write(chip, PDAUDIOCF_REG_IER, val); |
| 229 | |
| 230 | chip->pcm_size = runtime->buffer_size; |
| 231 | chip->pcm_period = runtime->period_size; |
| 232 | chip->pcm_area = runtime->dma_area; |
| 233 | |
| 234 | return 0; |
| 235 | } |
| 236 | |
| 237 | |
| 238 | /* |
| 239 | * capture hw information |
| 240 | */ |
| 241 | |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 242 | static struct snd_pcm_hardware pdacf_pcm_capture_hw = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | |
| 244 | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME | |
| 245 | SNDRV_PCM_INFO_MMAP_VALID), |
| 246 | .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | |
| 247 | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE | |
| 248 | SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE, |
| 249 | .rates = SNDRV_PCM_RATE_32000 | |
| 250 | SNDRV_PCM_RATE_44100 | |
| 251 | SNDRV_PCM_RATE_48000 | |
| 252 | SNDRV_PCM_RATE_88200 | |
| 253 | SNDRV_PCM_RATE_96000 | |
| 254 | SNDRV_PCM_RATE_176400 | |
| 255 | SNDRV_PCM_RATE_192000, |
| 256 | .rate_min = 32000, |
| 257 | .rate_max = 192000, |
| 258 | .channels_min = 1, |
| 259 | .channels_max = 2, |
| 260 | .buffer_bytes_max = (512*1024), |
| 261 | .period_bytes_min = 8*1024, |
| 262 | .period_bytes_max = (64*1024), |
| 263 | .periods_min = 2, |
| 264 | .periods_max = 128, |
| 265 | .fifo_size = 0, |
| 266 | }; |
| 267 | |
| 268 | |
| 269 | /* |
| 270 | * pdacf_pcm_capture_open - open callback for capture |
| 271 | */ |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 272 | static int pdacf_pcm_capture_open(struct snd_pcm_substream *subs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | { |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 274 | struct snd_pcm_runtime *runtime = subs->runtime; |
| 275 | struct snd_pdacf *chip = snd_pcm_substream_chip(subs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | |
| 277 | if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE) |
| 278 | return -EBUSY; |
| 279 | |
| 280 | runtime->hw = pdacf_pcm_capture_hw; |
| 281 | runtime->private_data = chip; |
| 282 | chip->pcm_substream = subs; |
| 283 | |
| 284 | return 0; |
| 285 | } |
| 286 | |
| 287 | /* |
| 288 | * pdacf_pcm_capture_close - close callback for capture |
| 289 | */ |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 290 | static int pdacf_pcm_capture_close(struct snd_pcm_substream *subs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | { |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 292 | struct snd_pdacf *chip = snd_pcm_substream_chip(subs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | |
| 294 | if (!chip) |
| 295 | return -EINVAL; |
| 296 | pdacf_reinit(chip, 0); |
| 297 | chip->pcm_substream = NULL; |
| 298 | return 0; |
| 299 | } |
| 300 | |
| 301 | |
| 302 | /* |
| 303 | * pdacf_pcm_capture_pointer - pointer callback for capture |
| 304 | */ |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 305 | static snd_pcm_uframes_t pdacf_pcm_capture_pointer(struct snd_pcm_substream *subs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | { |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 307 | struct snd_pdacf *chip = snd_pcm_substream_chip(subs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | return chip->pcm_hwptr; |
| 309 | } |
| 310 | |
| 311 | /* |
| 312 | * operators for PCM capture |
| 313 | */ |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 314 | static struct snd_pcm_ops pdacf_pcm_capture_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | .open = pdacf_pcm_capture_open, |
| 316 | .close = pdacf_pcm_capture_close, |
| 317 | .ioctl = snd_pcm_lib_ioctl, |
| 318 | .hw_params = pdacf_pcm_hw_params, |
| 319 | .hw_free = pdacf_pcm_hw_free, |
| 320 | .prepare = pdacf_pcm_prepare, |
| 321 | .trigger = pdacf_pcm_trigger, |
| 322 | .pointer = pdacf_pcm_capture_pointer, |
| 323 | .page = snd_pcm_get_vmalloc_page, |
| 324 | }; |
| 325 | |
| 326 | |
| 327 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | * snd_pdacf_pcm_new - create and initialize a pcm |
| 329 | */ |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 330 | int snd_pdacf_pcm_new(struct snd_pdacf *chip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | { |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 332 | struct snd_pcm *pcm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | int err; |
| 334 | |
| 335 | err = snd_pcm_new(chip->card, "PDAudioCF", 0, 0, 1, &pcm); |
| 336 | if (err < 0) |
| 337 | return err; |
| 338 | |
| 339 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pdacf_pcm_capture_ops); |
| 340 | |
| 341 | pcm->private_data = chip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | pcm->info_flags = 0; |
| 343 | strcpy(pcm->name, chip->card->shortname); |
| 344 | chip->pcm = pcm; |
| 345 | |
| 346 | err = snd_ak4117_build(chip->ak4117, pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream); |
| 347 | if (err < 0) |
| 348 | return err; |
| 349 | |
| 350 | return 0; |
| 351 | } |