Mauro Carvalho Chehab | b7f355d | 2006-01-09 15:32:44 -0200 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Support for audio capture |
| 4 | * PCI function #1 of the cx2388x. |
| 5 | * |
| 6 | * (c) 2005,2006 Ricardo Cerqueira <v4l@cerqueira.org> |
| 7 | * (c) 2005 Mauro Carvalho Chehab <mchehab@brturbo.com.br> |
| 8 | * Based on a dummy cx88 module by Gerd Knorr <kraxel@bytesex.org> |
| 9 | * Based on dummy.c by Jaroslav Kysela <perex@suse.cz> |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2 of the License, or |
| 14 | * (at your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with this program; if not, write to the Free Software |
| 23 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 24 | */ |
| 25 | |
| 26 | #include <linux/module.h> |
| 27 | #include <linux/init.h> |
| 28 | #include <linux/device.h> |
| 29 | #include <linux/interrupt.h> |
| 30 | #include <asm/delay.h> |
| 31 | #include <sound/driver.h> |
| 32 | #include <sound/core.h> |
| 33 | #include <sound/pcm.h> |
| 34 | #include <sound/pcm_params.h> |
| 35 | #include <sound/control.h> |
| 36 | #include <sound/initval.h> |
| 37 | |
| 38 | #include "cx88.h" |
| 39 | #include "cx88-reg.h" |
| 40 | |
| 41 | #define dprintk(level,fmt, arg...) if (debug >= level) \ |
| 42 | printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg) |
| 43 | |
| 44 | #define dprintk_core(level,fmt, arg...) if (debug >= level) \ |
| 45 | printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg) |
| 46 | |
| 47 | |
| 48 | /**************************************************************************** |
| 49 | Data type declarations - Can be moded to a header file later |
| 50 | ****************************************************************************/ |
| 51 | |
| 52 | /* These can be replaced after done */ |
| 53 | #define MIXER_ADDR_LAST MAX_CX88_INPUT |
| 54 | |
| 55 | struct cx88_audio_dev { |
| 56 | struct cx88_core *core; |
| 57 | struct cx88_dmaqueue q; |
| 58 | |
| 59 | /* pci i/o */ |
| 60 | struct pci_dev *pci; |
| 61 | unsigned char pci_rev,pci_lat; |
| 62 | |
| 63 | /* audio controls */ |
| 64 | int irq; |
| 65 | |
| 66 | snd_card_t *card; |
| 67 | |
| 68 | spinlock_t reg_lock; |
| 69 | |
| 70 | unsigned int dma_size; |
| 71 | unsigned int period_size; |
| 72 | unsigned int num_periods; |
| 73 | |
| 74 | struct videobuf_dmabuf dma_risc; |
| 75 | |
| 76 | int mixer_volume[MIXER_ADDR_LAST+1][2]; |
| 77 | int capture_source[MIXER_ADDR_LAST+1][2]; |
| 78 | |
| 79 | long int read_count; |
| 80 | long int read_offset; |
| 81 | |
| 82 | struct cx88_buffer *buf; |
| 83 | |
| 84 | long opened; |
| 85 | snd_pcm_substream_t *substream; |
| 86 | |
| 87 | }; |
| 88 | typedef struct cx88_audio_dev snd_cx88_card_t; |
| 89 | |
| 90 | |
| 91 | |
| 92 | /**************************************************************************** |
| 93 | Module global static vars |
| 94 | ****************************************************************************/ |
| 95 | |
| 96 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ |
| 97 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ |
| 98 | static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1}; |
| 99 | static snd_card_t *snd_cx88_cards[SNDRV_CARDS]; |
| 100 | |
| 101 | module_param_array(enable, bool, NULL, 0444); |
| 102 | MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled."); |
| 103 | |
| 104 | module_param_array(index, int, NULL, 0444); |
| 105 | MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s)."); |
| 106 | |
| 107 | |
| 108 | /**************************************************************************** |
| 109 | Module macros |
| 110 | ****************************************************************************/ |
| 111 | |
| 112 | MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards"); |
| 113 | MODULE_AUTHOR("Ricardo Cerqueira"); |
| 114 | MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@brturbo.com.br>"); |
| 115 | MODULE_LICENSE("GPL"); |
| 116 | MODULE_SUPPORTED_DEVICE("{{Conexant,23881}," |
| 117 | "{{Conexant,23882}," |
| 118 | "{{Conexant,23883}"); |
Mauro Carvalho Chehab | a5ed425 | 2006-01-13 14:10:19 -0200 | [diff] [blame] | 119 | static unsigned int debug; |
Mauro Carvalho Chehab | b7f355d | 2006-01-09 15:32:44 -0200 | [diff] [blame] | 120 | module_param(debug,int,0644); |
| 121 | MODULE_PARM_DESC(debug,"enable debug messages"); |
| 122 | |
| 123 | /**************************************************************************** |
| 124 | Module specific funtions |
| 125 | ****************************************************************************/ |
| 126 | |
| 127 | /* |
| 128 | * BOARD Specific: Sets audio DMA |
| 129 | */ |
| 130 | |
Mauro Carvalho Chehab | be8a82d | 2006-02-07 06:49:14 -0200 | [diff] [blame^] | 131 | static int _cx88_start_audio_dma(snd_cx88_card_t *chip) |
Mauro Carvalho Chehab | b7f355d | 2006-01-09 15:32:44 -0200 | [diff] [blame] | 132 | { |
| 133 | struct cx88_buffer *buf = chip->buf; |
| 134 | struct cx88_core *core=chip->core; |
| 135 | struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25]; |
| 136 | |
| 137 | |
| 138 | dprintk(1, "Starting audio DMA for %i bytes/line and %i (%i) lines at address %08x\n",buf->bpl, chip->num_periods, audio_ch->fifo_size / buf->bpl, audio_ch->fifo_start); |
| 139 | |
| 140 | /* setup fifo + format - out channel */ |
| 141 | cx88_sram_channel_setup(chip->core, &cx88_sram_channels[SRAM_CH25], |
| 142 | buf->bpl, buf->risc.dma); |
| 143 | |
| 144 | /* sets bpl size */ |
| 145 | cx_write(MO_AUDD_LNGTH, buf->bpl); |
| 146 | |
| 147 | /* reset counter */ |
| 148 | cx_write(MO_AUDD_GPCNTRL,GP_COUNT_CONTROL_RESET); |
| 149 | |
| 150 | dprintk(1,"Enabling IRQ, setting mask from 0x%x to 0x%x\n",chip->core->pci_irqmask,(chip->core->pci_irqmask | 0x02)); |
| 151 | /* enable irqs */ |
| 152 | cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | 0x02); |
| 153 | |
| 154 | |
| 155 | /* Enables corresponding bits at AUD_INT_STAT */ |
| 156 | cx_write(MO_AUD_INTMSK, |
| 157 | (1<<16)| |
| 158 | (1<<12)| |
| 159 | (1<<4)| |
| 160 | (1<<0) |
| 161 | ); |
| 162 | |
| 163 | /* start dma */ |
| 164 | cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */ |
| 165 | cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */ |
| 166 | |
| 167 | if (debug) |
| 168 | cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]); |
| 169 | |
| 170 | return 0; |
| 171 | } |
| 172 | |
| 173 | /* |
| 174 | * BOARD Specific: Resets audio DMA |
| 175 | */ |
Mauro Carvalho Chehab | be8a82d | 2006-02-07 06:49:14 -0200 | [diff] [blame^] | 176 | static int _cx88_stop_audio_dma(snd_cx88_card_t *chip) |
Mauro Carvalho Chehab | b7f355d | 2006-01-09 15:32:44 -0200 | [diff] [blame] | 177 | { |
| 178 | struct cx88_core *core=chip->core; |
| 179 | dprintk(1, "Stopping audio DMA\n"); |
| 180 | |
| 181 | /* stop dma */ |
| 182 | cx_clear(MO_AUD_DMACNTRL, 0x11); |
| 183 | |
| 184 | /* disable irqs */ |
| 185 | cx_clear(MO_PCI_INTMSK, 0x02); |
| 186 | cx_clear(MO_AUD_INTMSK, |
| 187 | (1<<16)| |
| 188 | (1<<12)| |
| 189 | (1<<4)| |
| 190 | (1<<0) |
| 191 | ); |
| 192 | |
| 193 | if (debug) |
| 194 | cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]); |
| 195 | |
| 196 | return 0; |
| 197 | } |
| 198 | |
| 199 | #define MAX_IRQ_LOOP 10 |
| 200 | |
| 201 | /* |
| 202 | * BOARD Specific: IRQ dma bits |
| 203 | */ |
| 204 | static char *cx88_aud_irqs[32] = { |
| 205 | "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */ |
| 206 | NULL, /* reserved */ |
| 207 | "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */ |
| 208 | NULL, /* reserved */ |
| 209 | "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */ |
| 210 | NULL, /* reserved */ |
| 211 | "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */ |
| 212 | NULL, /* reserved */ |
| 213 | "opc_err", "par_err", "rip_err", /* 16-18 */ |
| 214 | "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */ |
| 215 | }; |
| 216 | |
| 217 | /* |
| 218 | * BOARD Specific: Threats IRQ audio specific calls |
| 219 | */ |
| 220 | static void cx8801_aud_irq(snd_cx88_card_t *chip) |
| 221 | { |
| 222 | struct cx88_core *core = chip->core; |
| 223 | u32 status, mask; |
| 224 | u32 count; |
| 225 | |
| 226 | status = cx_read(MO_AUD_INTSTAT); |
| 227 | mask = cx_read(MO_AUD_INTMSK); |
| 228 | if (0 == (status & mask)) { |
| 229 | spin_unlock(&chip->reg_lock); |
| 230 | return; |
| 231 | } |
| 232 | cx_write(MO_AUD_INTSTAT, status); |
| 233 | if (debug > 1 || (status & mask & ~0xff)) |
| 234 | cx88_print_irqbits(core->name, "irq aud", |
| 235 | cx88_aud_irqs, status, mask); |
| 236 | /* risc op code error */ |
| 237 | if (status & (1 << 16)) { |
| 238 | printk(KERN_WARNING "%s/0: audio risc op code error\n",core->name); |
| 239 | cx_clear(MO_AUD_DMACNTRL, 0x11); |
| 240 | cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]); |
| 241 | } |
| 242 | |
| 243 | /* risc1 downstream */ |
| 244 | if (status & 0x01) { |
| 245 | spin_lock(&chip->reg_lock); |
| 246 | count = cx_read(MO_AUDD_GPCNT); |
| 247 | spin_unlock(&chip->reg_lock); |
| 248 | if (chip->read_count == 0) |
| 249 | chip->read_count += chip->dma_size; |
| 250 | } |
| 251 | |
| 252 | if (chip->read_count >= chip->period_size) { |
| 253 | dprintk(2, "Elapsing period\n"); |
| 254 | snd_pcm_period_elapsed(chip->substream); |
| 255 | } |
| 256 | |
| 257 | dprintk(3,"Leaving audio IRQ handler...\n"); |
| 258 | |
| 259 | /* FIXME: Any other status should deserve a special handling? */ |
| 260 | } |
| 261 | |
| 262 | /* |
| 263 | * BOARD Specific: Handles IRQ calls |
| 264 | */ |
| 265 | static irqreturn_t cx8801_irq(int irq, void *dev_id, struct pt_regs *regs) |
| 266 | { |
| 267 | snd_cx88_card_t *chip = dev_id; |
| 268 | struct cx88_core *core = chip->core; |
| 269 | u32 status; |
| 270 | int loop, handled = 0; |
| 271 | |
| 272 | for (loop = 0; loop < MAX_IRQ_LOOP; loop++) { |
| 273 | status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x02); |
| 274 | if (0 == status) |
| 275 | goto out; |
| 276 | dprintk( 3, "cx8801_irq\n" ); |
| 277 | dprintk( 3, " loop: %d/%d\n", loop, MAX_IRQ_LOOP ); |
| 278 | dprintk( 3, " status: %d\n", status ); |
| 279 | handled = 1; |
| 280 | cx_write(MO_PCI_INTSTAT, status); |
| 281 | |
| 282 | if (status & 0x02) |
| 283 | { |
| 284 | dprintk( 2, " ALSA IRQ handling\n" ); |
| 285 | cx8801_aud_irq(chip); |
| 286 | } |
| 287 | }; |
| 288 | |
| 289 | if (MAX_IRQ_LOOP == loop) { |
| 290 | dprintk( 0, "clearing mask\n" ); |
| 291 | dprintk(1,"%s/0: irq loop -- clearing mask\n", |
| 292 | core->name); |
| 293 | cx_clear(MO_PCI_INTMSK,0x02); |
| 294 | } |
| 295 | |
| 296 | out: |
| 297 | return IRQ_RETVAL(handled); |
| 298 | } |
| 299 | |
| 300 | |
| 301 | static int dsp_buffer_free(snd_cx88_card_t *chip) |
| 302 | { |
| 303 | BUG_ON(!chip->dma_size); |
| 304 | |
| 305 | dprintk(2,"Freeing buffer\n"); |
| 306 | videobuf_dma_pci_unmap(chip->pci, &chip->dma_risc); |
| 307 | videobuf_dma_free(&chip->dma_risc); |
| 308 | btcx_riscmem_free(chip->pci,&chip->buf->risc); |
| 309 | kfree(chip->buf); |
| 310 | |
| 311 | chip->dma_size = 0; |
| 312 | |
| 313 | return 0; |
| 314 | } |
| 315 | |
| 316 | /**************************************************************************** |
| 317 | ALSA PCM Interface |
| 318 | ****************************************************************************/ |
| 319 | |
| 320 | /* |
| 321 | * Digital hardware definition |
| 322 | */ |
| 323 | static snd_pcm_hardware_t snd_cx88_digital_hw = { |
| 324 | .info = SNDRV_PCM_INFO_MMAP | |
| 325 | SNDRV_PCM_INFO_INTERLEAVED | |
| 326 | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
| 327 | SNDRV_PCM_INFO_MMAP_VALID, |
| 328 | .formats = SNDRV_PCM_FMTBIT_S16_LE, |
| 329 | |
| 330 | .rates = SNDRV_PCM_RATE_48000, |
| 331 | .rate_min = 48000, |
| 332 | .rate_max = 48000, |
| 333 | .channels_min = 1, |
| 334 | .channels_max = 2, |
| 335 | .buffer_bytes_max = (2*2048), |
Ricardo Cerqueira | 18adfe7 | 2006-01-15 15:33:02 -0200 | [diff] [blame] | 336 | .period_bytes_min = 2048, |
Mauro Carvalho Chehab | b7f355d | 2006-01-09 15:32:44 -0200 | [diff] [blame] | 337 | .period_bytes_max = 2048, |
| 338 | .periods_min = 2, |
Ricardo Cerqueira | 18adfe7 | 2006-01-15 15:33:02 -0200 | [diff] [blame] | 339 | .periods_max = 2, |
Mauro Carvalho Chehab | b7f355d | 2006-01-09 15:32:44 -0200 | [diff] [blame] | 340 | }; |
| 341 | |
| 342 | /* |
| 343 | * audio pcm capture runtime free |
| 344 | */ |
| 345 | static void snd_card_cx88_runtime_free(snd_pcm_runtime_t *runtime) |
| 346 | { |
| 347 | } |
| 348 | /* |
| 349 | * audio pcm capture open callback |
| 350 | */ |
| 351 | static int snd_cx88_pcm_open(snd_pcm_substream_t *substream) |
| 352 | { |
| 353 | snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); |
| 354 | snd_pcm_runtime_t *runtime = substream->runtime; |
| 355 | int err; |
| 356 | |
| 357 | if (test_and_set_bit(0, &chip->opened)) |
| 358 | return -EBUSY; |
| 359 | |
| 360 | err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); |
| 361 | if (err < 0) |
| 362 | goto _error; |
| 363 | |
| 364 | chip->substream = substream; |
| 365 | |
| 366 | chip->read_count = 0; |
| 367 | chip->read_offset = 0; |
| 368 | |
| 369 | runtime->private_free = snd_card_cx88_runtime_free; |
| 370 | runtime->hw = snd_cx88_digital_hw; |
| 371 | |
| 372 | return 0; |
| 373 | _error: |
| 374 | dprintk(1,"Error opening PCM!\n"); |
| 375 | clear_bit(0, &chip->opened); |
| 376 | smp_mb__after_clear_bit(); |
| 377 | return err; |
| 378 | } |
| 379 | |
| 380 | /* |
| 381 | * audio close callback |
| 382 | */ |
| 383 | static int snd_cx88_close(snd_pcm_substream_t *substream) |
| 384 | { |
| 385 | snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); |
| 386 | |
| 387 | clear_bit(0, &chip->opened); |
| 388 | smp_mb__after_clear_bit(); |
| 389 | |
| 390 | return 0; |
| 391 | } |
| 392 | |
| 393 | /* |
| 394 | * hw_params callback |
| 395 | */ |
| 396 | static int snd_cx88_hw_params(snd_pcm_substream_t * substream, |
| 397 | snd_pcm_hw_params_t * hw_params) |
| 398 | { |
| 399 | snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); |
| 400 | struct cx88_buffer *buf; |
| 401 | |
| 402 | if (substream->runtime->dma_area) { |
| 403 | dsp_buffer_free(chip); |
| 404 | substream->runtime->dma_area = NULL; |
| 405 | } |
| 406 | |
| 407 | |
| 408 | chip->period_size = params_period_bytes(hw_params); |
| 409 | chip->num_periods = params_periods(hw_params); |
| 410 | chip->dma_size = chip->period_size * params_periods(hw_params); |
| 411 | |
| 412 | BUG_ON(!chip->dma_size); |
| 413 | |
| 414 | dprintk(1,"Setting buffer\n"); |
| 415 | |
| 416 | buf = kmalloc(sizeof(*buf),GFP_KERNEL); |
| 417 | if (NULL == buf) |
| 418 | return -ENOMEM; |
| 419 | memset(buf,0,sizeof(*buf)); |
| 420 | |
| 421 | |
| 422 | buf->vb.memory = V4L2_MEMORY_MMAP; |
| 423 | buf->vb.width = chip->period_size; |
| 424 | buf->vb.height = chip->num_periods; |
| 425 | buf->vb.size = chip->dma_size; |
| 426 | buf->vb.field = V4L2_FIELD_NONE; |
| 427 | |
| 428 | videobuf_dma_init(&buf->vb.dma); |
| 429 | videobuf_dma_init_kernel(&buf->vb.dma,PCI_DMA_FROMDEVICE, |
| 430 | (PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT)); |
| 431 | |
| 432 | videobuf_dma_pci_map(chip->pci,&buf->vb.dma); |
| 433 | |
| 434 | |
| 435 | cx88_risc_databuffer(chip->pci, &buf->risc, |
| 436 | buf->vb.dma.sglist, |
| 437 | buf->vb.width, buf->vb.height); |
| 438 | |
| 439 | buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC); |
| 440 | buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma); |
| 441 | |
| 442 | buf->vb.state = STATE_PREPARED; |
| 443 | |
| 444 | buf->bpl = chip->period_size; |
| 445 | chip->buf = buf; |
| 446 | chip->dma_risc = buf->vb.dma; |
| 447 | |
| 448 | dprintk(1,"Buffer ready at %u\n",chip->dma_risc.nr_pages); |
| 449 | substream->runtime->dma_area = chip->dma_risc.vmalloc; |
| 450 | return 0; |
| 451 | } |
| 452 | |
| 453 | /* |
| 454 | * hw free callback |
| 455 | */ |
| 456 | static int snd_cx88_hw_free(snd_pcm_substream_t * substream) |
| 457 | { |
| 458 | |
| 459 | snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); |
| 460 | |
| 461 | if (substream->runtime->dma_area) { |
| 462 | dsp_buffer_free(chip); |
| 463 | substream->runtime->dma_area = NULL; |
| 464 | } |
| 465 | |
| 466 | return 0; |
| 467 | } |
| 468 | |
| 469 | /* |
| 470 | * prepare callback |
| 471 | */ |
| 472 | static int snd_cx88_prepare(snd_pcm_substream_t *substream) |
| 473 | { |
| 474 | return 0; |
| 475 | } |
| 476 | |
| 477 | |
| 478 | /* |
| 479 | * trigger callback |
| 480 | */ |
| 481 | static int snd_cx88_card_trigger(snd_pcm_substream_t *substream, int cmd) |
| 482 | { |
| 483 | snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); |
| 484 | int err; |
| 485 | |
| 486 | spin_lock(&chip->reg_lock); |
| 487 | |
| 488 | switch (cmd) { |
| 489 | case SNDRV_PCM_TRIGGER_START: |
| 490 | err=_cx88_start_audio_dma(chip); |
| 491 | break; |
| 492 | case SNDRV_PCM_TRIGGER_STOP: |
| 493 | err=_cx88_stop_audio_dma(chip); |
| 494 | break; |
| 495 | default: |
| 496 | err=-EINVAL; |
| 497 | break; |
| 498 | } |
| 499 | |
| 500 | spin_unlock(&chip->reg_lock); |
| 501 | |
| 502 | return err; |
| 503 | } |
| 504 | |
| 505 | /* |
| 506 | * pointer callback |
| 507 | */ |
| 508 | static snd_pcm_uframes_t snd_cx88_pointer(snd_pcm_substream_t *substream) |
| 509 | { |
| 510 | snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); |
| 511 | snd_pcm_runtime_t *runtime = substream->runtime; |
| 512 | |
| 513 | if (chip->read_count) { |
| 514 | chip->read_count -= snd_pcm_lib_period_bytes(substream); |
| 515 | chip->read_offset += snd_pcm_lib_period_bytes(substream); |
| 516 | if (chip->read_offset == chip->dma_size) |
| 517 | chip->read_offset = 0; |
| 518 | } |
| 519 | |
| 520 | dprintk(2, "Pointer time, will return %li, read %li\n",chip->read_offset,chip->read_count); |
| 521 | return bytes_to_frames(runtime, chip->read_offset); |
| 522 | |
| 523 | } |
| 524 | |
| 525 | /* |
| 526 | * operators |
| 527 | */ |
| 528 | static snd_pcm_ops_t snd_cx88_pcm_ops = { |
| 529 | .open = snd_cx88_pcm_open, |
| 530 | .close = snd_cx88_close, |
| 531 | .ioctl = snd_pcm_lib_ioctl, |
| 532 | .hw_params = snd_cx88_hw_params, |
| 533 | .hw_free = snd_cx88_hw_free, |
| 534 | .prepare = snd_cx88_prepare, |
| 535 | .trigger = snd_cx88_card_trigger, |
| 536 | .pointer = snd_cx88_pointer, |
| 537 | }; |
| 538 | |
| 539 | /* |
| 540 | * create a PCM device |
| 541 | */ |
| 542 | static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, char *name) |
| 543 | { |
| 544 | int err; |
| 545 | snd_pcm_t *pcm; |
| 546 | |
| 547 | err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm); |
| 548 | if (err < 0) |
| 549 | return err; |
| 550 | pcm->private_data = chip; |
| 551 | strcpy(pcm->name, name); |
| 552 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops); |
| 553 | |
| 554 | return 0; |
| 555 | } |
| 556 | |
| 557 | /**************************************************************************** |
| 558 | CONTROL INTERFACE |
| 559 | ****************************************************************************/ |
| 560 | static int snd_cx88_capture_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info) |
| 561 | { |
| 562 | info->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| 563 | info->count = 1; |
| 564 | info->value.integer.min = 0; |
| 565 | info->value.integer.max = 0x3f; |
| 566 | |
| 567 | return 0; |
| 568 | } |
| 569 | |
| 570 | /* OK - TODO: test it */ |
| 571 | static int snd_cx88_capture_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value) |
| 572 | { |
| 573 | snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol); |
| 574 | struct cx88_core *core=chip->core; |
| 575 | |
| 576 | value->value.integer.value[0] = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f); |
| 577 | |
| 578 | return 0; |
| 579 | } |
| 580 | |
| 581 | /* OK - TODO: test it */ |
| 582 | static int snd_cx88_capture_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value) |
| 583 | { |
| 584 | snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol); |
| 585 | struct cx88_core *core=chip->core; |
| 586 | int v; |
| 587 | u32 old_control; |
| 588 | |
| 589 | spin_lock_irq(&chip->reg_lock); |
| 590 | old_control = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f); |
| 591 | v = 0x3f - (value->value.integer.value[0] & 0x3f); |
| 592 | cx_andor(AUD_VOL_CTL, 0x3f, v); |
| 593 | spin_unlock_irq(&chip->reg_lock); |
| 594 | |
| 595 | return v != old_control; |
| 596 | } |
| 597 | |
| 598 | static snd_kcontrol_new_t snd_cx88_capture_volume = { |
| 599 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
| 600 | .name = "Capture Volume", |
| 601 | .info = snd_cx88_capture_volume_info, |
| 602 | .get = snd_cx88_capture_volume_get, |
| 603 | .put = snd_cx88_capture_volume_put, |
| 604 | }; |
| 605 | |
| 606 | |
| 607 | /**************************************************************************** |
| 608 | Basic Flow for Sound Devices |
| 609 | ****************************************************************************/ |
| 610 | |
| 611 | /* |
| 612 | * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio |
| 613 | * Only boards with eeprom and byte 1 at eeprom=1 have it |
| 614 | */ |
| 615 | |
Mauro Carvalho Chehab | be8a82d | 2006-02-07 06:49:14 -0200 | [diff] [blame^] | 616 | static struct pci_device_id cx88_audio_pci_tbl[] = { |
Mauro Carvalho Chehab | b7f355d | 2006-01-09 15:32:44 -0200 | [diff] [blame] | 617 | {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0}, |
| 618 | {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0}, |
| 619 | {0, } |
| 620 | }; |
| 621 | MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl); |
| 622 | |
| 623 | /* |
| 624 | * Chip-specific destructor |
| 625 | */ |
| 626 | |
| 627 | static int snd_cx88_free(snd_cx88_card_t *chip) |
| 628 | { |
| 629 | |
| 630 | if (chip->irq >= 0){ |
| 631 | synchronize_irq(chip->irq); |
| 632 | free_irq(chip->irq, chip); |
| 633 | } |
| 634 | |
| 635 | cx88_core_put(chip->core,chip->pci); |
| 636 | |
| 637 | pci_disable_device(chip->pci); |
| 638 | return 0; |
| 639 | } |
| 640 | |
| 641 | /* |
| 642 | * Component Destructor |
| 643 | */ |
| 644 | static void snd_cx88_dev_free(snd_card_t * card) |
| 645 | { |
| 646 | snd_cx88_card_t *chip = card->private_data; |
| 647 | |
| 648 | snd_cx88_free(chip); |
| 649 | } |
| 650 | |
| 651 | |
| 652 | /* |
| 653 | * Alsa Constructor - Component probe |
| 654 | */ |
| 655 | |
Mauro Carvalho Chehab | a5ed425 | 2006-01-13 14:10:19 -0200 | [diff] [blame] | 656 | static int devno; |
Mauro Carvalho Chehab | b7f355d | 2006-01-09 15:32:44 -0200 | [diff] [blame] | 657 | static int __devinit snd_cx88_create(snd_card_t *card, struct pci_dev *pci, |
| 658 | snd_cx88_card_t **rchip) |
| 659 | { |
| 660 | snd_cx88_card_t *chip; |
| 661 | struct cx88_core *core; |
| 662 | int err; |
| 663 | |
| 664 | *rchip = NULL; |
| 665 | |
| 666 | err = pci_enable_device(pci); |
| 667 | if (err < 0) |
| 668 | return err; |
| 669 | |
| 670 | pci_set_master(pci); |
| 671 | |
| 672 | chip = (snd_cx88_card_t *) card->private_data; |
| 673 | |
| 674 | core = cx88_core_get(pci); |
| 675 | |
| 676 | if (!pci_dma_supported(pci,0xffffffff)) { |
| 677 | dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name); |
| 678 | err = -EIO; |
| 679 | cx88_core_put(core,pci); |
| 680 | return err; |
| 681 | } |
| 682 | |
| 683 | |
| 684 | /* pci init */ |
| 685 | chip->card = card; |
| 686 | chip->pci = pci; |
| 687 | chip->irq = -1; |
| 688 | spin_lock_init(&chip->reg_lock); |
| 689 | |
| 690 | cx88_reset(core); |
| 691 | if (NULL == core) { |
| 692 | err = -EINVAL; |
| 693 | kfree (chip); |
| 694 | return err; |
| 695 | } |
| 696 | chip->core = core; |
| 697 | |
| 698 | /* get irq */ |
| 699 | err = request_irq(chip->pci->irq, cx8801_irq, |
| 700 | SA_SHIRQ | SA_INTERRUPT, chip->core->name, chip); |
| 701 | if (err < 0) { |
| 702 | dprintk(0, "%s: can't get IRQ %d\n", |
| 703 | chip->core->name, chip->pci->irq); |
| 704 | return err; |
| 705 | } |
| 706 | |
| 707 | /* print pci info */ |
| 708 | pci_read_config_byte(pci, PCI_CLASS_REVISION, &chip->pci_rev); |
| 709 | pci_read_config_byte(pci, PCI_LATENCY_TIMER, &chip->pci_lat); |
| 710 | |
| 711 | dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, " |
| 712 | "latency: %d, mmio: 0x%lx\n", core->name, devno, |
| 713 | pci_name(pci), chip->pci_rev, pci->irq, |
| 714 | chip->pci_lat,pci_resource_start(pci,0)); |
| 715 | |
| 716 | chip->irq = pci->irq; |
| 717 | synchronize_irq(chip->irq); |
| 718 | |
| 719 | snd_card_set_dev(card, &pci->dev); |
| 720 | |
| 721 | *rchip = chip; |
| 722 | |
| 723 | return 0; |
| 724 | } |
| 725 | |
| 726 | static int __devinit cx88_audio_initdev(struct pci_dev *pci, |
| 727 | const struct pci_device_id *pci_id) |
| 728 | { |
| 729 | snd_card_t *card; |
| 730 | snd_cx88_card_t *chip; |
| 731 | int err; |
| 732 | |
| 733 | if (devno >= SNDRV_CARDS) |
| 734 | return (-ENODEV); |
| 735 | |
| 736 | if (!enable[devno]) { |
| 737 | ++devno; |
| 738 | return (-ENOENT); |
| 739 | } |
| 740 | |
| 741 | card = snd_card_new(index[devno], id[devno], THIS_MODULE, sizeof(snd_cx88_card_t)); |
| 742 | if (!card) |
| 743 | return (-ENOMEM); |
| 744 | |
| 745 | card->private_free = snd_cx88_dev_free; |
| 746 | |
| 747 | err = snd_cx88_create(card, pci, &chip); |
| 748 | if (err < 0) |
| 749 | return (err); |
| 750 | |
| 751 | err = snd_cx88_pcm(chip, 0, "CX88 Digital"); |
| 752 | |
| 753 | if (err < 0) { |
| 754 | snd_card_free(card); |
| 755 | return (err); |
| 756 | } |
| 757 | |
| 758 | err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_capture_volume, chip)); |
| 759 | if (err < 0) { |
| 760 | snd_card_free(card); |
| 761 | return (err); |
| 762 | } |
| 763 | |
| 764 | strcpy (card->driver, "CX88x"); |
| 765 | sprintf(card->shortname, "Conexant CX%x", pci->device); |
| 766 | sprintf(card->longname, "%s at %#lx", |
| 767 | card->shortname, pci_resource_start(pci, 0)); |
| 768 | strcpy (card->mixername, "CX88"); |
| 769 | |
| 770 | dprintk (0, "%s/%i: ALSA support for cx2388x boards\n", |
| 771 | card->driver,devno); |
| 772 | |
| 773 | err = snd_card_register(card); |
| 774 | if (err < 0) { |
| 775 | snd_card_free(card); |
| 776 | return (err); |
| 777 | } |
| 778 | snd_cx88_cards[devno] = card; |
| 779 | |
| 780 | pci_set_drvdata(pci,card); |
| 781 | |
| 782 | devno++; |
| 783 | return 0; |
| 784 | } |
| 785 | /* |
| 786 | * ALSA destructor |
| 787 | */ |
| 788 | static void __devexit cx88_audio_finidev(struct pci_dev *pci) |
| 789 | { |
| 790 | struct cx88_audio_dev *card = pci_get_drvdata(pci); |
| 791 | |
| 792 | snd_card_free((void *)card); |
| 793 | |
| 794 | pci_set_drvdata(pci, NULL); |
| 795 | |
| 796 | devno--; |
| 797 | } |
| 798 | |
| 799 | /* |
| 800 | * PCI driver definition |
| 801 | */ |
| 802 | |
| 803 | static struct pci_driver cx88_audio_pci_driver = { |
| 804 | .name = "cx88_audio", |
| 805 | .id_table = cx88_audio_pci_tbl, |
| 806 | .probe = cx88_audio_initdev, |
| 807 | .remove = cx88_audio_finidev, |
Mauro Carvalho Chehab | b7f355d | 2006-01-09 15:32:44 -0200 | [diff] [blame] | 808 | }; |
| 809 | |
| 810 | /**************************************************************************** |
| 811 | LINUX MODULE INIT |
| 812 | ****************************************************************************/ |
| 813 | |
| 814 | /* |
| 815 | * module init |
| 816 | */ |
| 817 | static int cx88_audio_init(void) |
| 818 | { |
| 819 | printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n", |
| 820 | (CX88_VERSION_CODE >> 16) & 0xff, |
| 821 | (CX88_VERSION_CODE >> 8) & 0xff, |
| 822 | CX88_VERSION_CODE & 0xff); |
| 823 | #ifdef SNAPSHOT |
| 824 | printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n", |
| 825 | SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100); |
| 826 | #endif |
| 827 | return pci_register_driver(&cx88_audio_pci_driver); |
| 828 | } |
| 829 | |
| 830 | /* |
| 831 | * module remove |
| 832 | */ |
| 833 | static void cx88_audio_fini(void) |
| 834 | { |
| 835 | |
| 836 | pci_unregister_driver(&cx88_audio_pci_driver); |
| 837 | } |
| 838 | |
| 839 | module_init(cx88_audio_init); |
| 840 | module_exit(cx88_audio_fini); |
| 841 | |
| 842 | /* ----------------------------------------------------------- */ |
| 843 | /* |
| 844 | * Local variables: |
| 845 | * c-basic-offset: 8 |
| 846 | * End: |
| 847 | */ |