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fuse: ->fs_flags fixlet
[linux-2.6/openmoko-kernel.git] / sound / pci / bt87x.c
blob6523ba07db963eca79b03126eee27b5244f63576
1 /*
2 * bt87x.c - Brooktree Bt878/Bt879 driver for ALSA
3 *
4 * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
5 *
6 * based on btaudio.c by Gerd Knorr <kraxel@bytesex.org>
7 *
8 *
9 * This driver is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This driver is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24 #include <sound/driver.h>
25 #include <linux/init.h>
26 #include <linux/interrupt.h>
27 #include <linux/pci.h>
28 #include <linux/slab.h>
29 #include <linux/moduleparam.h>
30 #include <linux/bitops.h>
31 #include <asm/io.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 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
39 MODULE_DESCRIPTION("Brooktree Bt87x audio driver");
40 MODULE_LICENSE("GPL");
41 MODULE_SUPPORTED_DEVICE("{{Brooktree,Bt878},"
42 "{Brooktree,Bt879}}");
43
44 static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */
45 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
46 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
47 static int digital_rate[SNDRV_CARDS]; /* digital input rate */
48 static int load_all; /* allow to load the non-whitelisted cards */
49
50 module_param_array(index, int, NULL, 0444);
51 MODULE_PARM_DESC(index, "Index value for Bt87x soundcard");
52 module_param_array(id, charp, NULL, 0444);
53 MODULE_PARM_DESC(id, "ID string for Bt87x soundcard");
54 module_param_array(enable, bool, NULL, 0444);
55 MODULE_PARM_DESC(enable, "Enable Bt87x soundcard");
56 module_param_array(digital_rate, int, NULL, 0444);
57 MODULE_PARM_DESC(digital_rate, "Digital input rate for Bt87x soundcard");
58 module_param(load_all, bool, 0444);
59 MODULE_PARM_DESC(load_all, "Allow to load the non-whitelisted cards");
60
61
62 /* register offsets */
63 #define REG_INT_STAT 0x100 /* interrupt status */
64 #define REG_INT_MASK 0x104 /* interrupt mask */
65 #define REG_GPIO_DMA_CTL 0x10c /* audio control */
66 #define REG_PACKET_LEN 0x110 /* audio packet lengths */
67 #define REG_RISC_STRT_ADD 0x114 /* RISC program start address */
68 #define REG_RISC_COUNT 0x120 /* RISC program counter */
69
70 /* interrupt bits */
71 #define INT_OFLOW (1 << 3) /* audio A/D overflow */
72 #define INT_RISCI (1 << 11) /* RISC instruction IRQ bit set */
73 #define INT_FBUS (1 << 12) /* FIFO overrun due to bus access latency */
74 #define INT_FTRGT (1 << 13) /* FIFO overrun due to target latency */
75 #define INT_FDSR (1 << 14) /* FIFO data stream resynchronization */
76 #define INT_PPERR (1 << 15) /* PCI parity error */
77 #define INT_RIPERR (1 << 16) /* RISC instruction parity error */
78 #define INT_PABORT (1 << 17) /* PCI master or target abort */
79 #define INT_OCERR (1 << 18) /* invalid opcode */
80 #define INT_SCERR (1 << 19) /* sync counter overflow */
81 #define INT_RISC_EN (1 << 27) /* DMA controller running */
82 #define INT_RISCS_SHIFT 28 /* RISC status bits */
83
84 /* audio control bits */
85 #define CTL_FIFO_ENABLE (1 << 0) /* enable audio data FIFO */
86 #define CTL_RISC_ENABLE (1 << 1) /* enable audio DMA controller */
87 #define CTL_PKTP_4 (0 << 2) /* packet mode FIFO trigger point - 4 DWORDs */
88 #define CTL_PKTP_8 (1 << 2) /* 8 DWORDs */
89 #define CTL_PKTP_16 (2 << 2) /* 16 DWORDs */
90 #define CTL_ACAP_EN (1 << 4) /* enable audio capture */
91 #define CTL_DA_APP (1 << 5) /* GPIO input */
92 #define CTL_DA_IOM_AFE (0 << 6) /* audio A/D input */
93 #define CTL_DA_IOM_DA (1 << 6) /* digital audio input */
94 #define CTL_DA_SDR_SHIFT 8 /* DDF first stage decimation rate */
95 #define CTL_DA_SDR_MASK (0xf<< 8)
96 #define CTL_DA_LMT (1 << 12) /* limit audio data values */
97 #define CTL_DA_ES2 (1 << 13) /* enable DDF stage 2 */
98 #define CTL_DA_SBR (1 << 14) /* samples rounded to 8 bits */
99 #define CTL_DA_DPM (1 << 15) /* data packet mode */
100 #define CTL_DA_LRD_SHIFT 16 /* ALRCK delay */
101 #define CTL_DA_MLB (1 << 21) /* MSB/LSB format */
102 #define CTL_DA_LRI (1 << 22) /* left/right indication */
103 #define CTL_DA_SCE (1 << 23) /* sample clock edge */
104 #define CTL_A_SEL_STV (0 << 24) /* TV tuner audio input */
105 #define CTL_A_SEL_SFM (1 << 24) /* FM audio input */
106 #define CTL_A_SEL_SML (2 << 24) /* mic/line audio input */
107 #define CTL_A_SEL_SMXC (3 << 24) /* MUX bypass */
108 #define CTL_A_SEL_SHIFT 24
109 #define CTL_A_SEL_MASK (3 << 24)
110 #define CTL_A_PWRDN (1 << 26) /* analog audio power-down */
111 #define CTL_A_G2X (1 << 27) /* audio gain boost */
112 #define CTL_A_GAIN_SHIFT 28 /* audio input gain */
113 #define CTL_A_GAIN_MASK (0xf<<28)
114
115 /* RISC instruction opcodes */
116 #define RISC_WRITE (0x1 << 28) /* write FIFO data to memory at address */
117 #define RISC_WRITEC (0x5 << 28) /* write FIFO data to memory at current address */
118 #define RISC_SKIP (0x2 << 28) /* skip FIFO data */
119 #define RISC_JUMP (0x7 << 28) /* jump to address */
120 #define RISC_SYNC (0x8 << 28) /* synchronize with FIFO */
121
122 /* RISC instruction bits */
123 #define RISC_BYTES_ENABLE (0xf << 12) /* byte enable bits */
124 #define RISC_RESYNC ( 1 << 15) /* disable FDSR errors */
125 #define RISC_SET_STATUS_SHIFT 16 /* set status bits */
126 #define RISC_RESET_STATUS_SHIFT 20 /* clear status bits */
127 #define RISC_IRQ ( 1 << 24) /* interrupt */
128 #define RISC_EOL ( 1 << 26) /* end of line */
129 #define RISC_SOL ( 1 << 27) /* start of line */
130
131 /* SYNC status bits values */
132 #define RISC_SYNC_FM1 0x6
133 #define RISC_SYNC_VRO 0xc
134
135 #define ANALOG_CLOCK 1792000
136 #ifdef CONFIG_SND_BT87X_OVERCLOCK
137 #define CLOCK_DIV_MIN 1
138 #else
139 #define CLOCK_DIV_MIN 4
140 #endif
141 #define CLOCK_DIV_MAX 15
142
143 #define ERROR_INTERRUPTS (INT_FBUS | INT_FTRGT | INT_PPERR | \
144 INT_RIPERR | INT_PABORT | INT_OCERR)
145 #define MY_INTERRUPTS (INT_RISCI | ERROR_INTERRUPTS)
146
147 /* SYNC, one WRITE per line, one extra WRITE per page boundary, SYNC, JUMP */
148 #define MAX_RISC_SIZE ((1 + 255 + (PAGE_ALIGN(255 * 4092) / PAGE_SIZE - 1) + 1 + 1) * 8)
149
150 struct snd_bt87x {
151 struct snd_card *card;
152 struct pci_dev *pci;
153
154 void __iomem *mmio;
155 int irq;
156
157 int dig_rate;
158
159 spinlock_t reg_lock;
160 long opened;
161 struct snd_pcm_substream *substream;
162
163 struct snd_dma_buffer dma_risc;
164 unsigned int line_bytes;
165 unsigned int lines;
166
167 u32 reg_control;
168 u32 interrupt_mask;
169
170 int current_line;
171
172 int pci_parity_errors;
173 };
174
175 enum { DEVICE_DIGITAL, DEVICE_ANALOG };
176
177 static inline u32 snd_bt87x_readl(struct snd_bt87x *chip, u32 reg)
178 {
179 return readl(chip->mmio + reg);
180 }
181
182 static inline void snd_bt87x_writel(struct snd_bt87x *chip, u32 reg, u32 value)
183 {
184 writel(value, chip->mmio + reg);
185 }
186
187 static int snd_bt87x_create_risc(struct snd_bt87x *chip, struct snd_pcm_substream *substream,
188 unsigned int periods, unsigned int period_bytes)
189 {
190 struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
191 unsigned int i, offset;
192 u32 *risc;
193
194 if (chip->dma_risc.area == NULL) {
195 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
196 PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
197 return -ENOMEM;
198 }
199 risc = (u32 *)chip->dma_risc.area;
200 offset = 0;
201 *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
202 *risc++ = cpu_to_le32(0);
203 for (i = 0; i < periods; ++i) {
204 u32 rest;
205
206 rest = period_bytes;
207 do {
208 u32 cmd, len;
209
210 len = PAGE_SIZE - (offset % PAGE_SIZE);
211 if (len > rest)
212 len = rest;
213 cmd = RISC_WRITE | len;
214 if (rest == period_bytes) {
215 u32 block = i * 16 / periods;
216 cmd |= RISC_SOL;
217 cmd |= block << RISC_SET_STATUS_SHIFT;
218 cmd |= (~block & 0xf) << RISC_RESET_STATUS_SHIFT;
219 }
220 if (len == rest)
221 cmd |= RISC_EOL | RISC_IRQ;
222 *risc++ = cpu_to_le32(cmd);
223 *risc++ = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, offset));
224 offset += len;
225 rest -= len;
226 } while (rest > 0);
227 }
228 *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO);
229 *risc++ = cpu_to_le32(0);
230 *risc++ = cpu_to_le32(RISC_JUMP);
231 *risc++ = cpu_to_le32(chip->dma_risc.addr);
232 chip->line_bytes = period_bytes;
233 chip->lines = periods;
234 return 0;
235 }
236
237 static void snd_bt87x_free_risc(struct snd_bt87x *chip)
238 {
239 if (chip->dma_risc.area) {
240 snd_dma_free_pages(&chip->dma_risc);
241 chip->dma_risc.area = NULL;
242 }
243 }
244
245 static void snd_bt87x_pci_error(struct snd_bt87x *chip, unsigned int status)
246 {
247 u16 pci_status;
248
249 pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
250 pci_status &= PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
251 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
252 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY;
253 pci_write_config_word(chip->pci, PCI_STATUS, pci_status);
254 if (pci_status != PCI_STATUS_DETECTED_PARITY)
255 snd_printk(KERN_ERR "Aieee - PCI error! status %#08x, PCI status %#04x\n",
256 status & ERROR_INTERRUPTS, pci_status);
257 else {
258 snd_printk(KERN_ERR "Aieee - PCI parity error detected!\n");
259 /* error 'handling' similar to aic7xxx_pci.c: */
260 chip->pci_parity_errors++;
261 if (chip->pci_parity_errors > 20) {
262 snd_printk(KERN_ERR "Too many PCI parity errors observed.\n");
263 snd_printk(KERN_ERR "Some device on this bus is generating bad parity.\n");
264 snd_printk(KERN_ERR "This is an error *observed by*, not *generated by*, this card.\n");
265 snd_printk(KERN_ERR "PCI parity error checking has been disabled.\n");
266 chip->interrupt_mask &= ~(INT_PPERR | INT_RIPERR);
267 snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
268 }
269 }
270 }
271
272 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id)
273 {
274 struct snd_bt87x *chip = dev_id;
275 unsigned int status, irq_status;
276
277 status = snd_bt87x_readl(chip, REG_INT_STAT);
278 irq_status = status & chip->interrupt_mask;
279 if (!irq_status)
280 return IRQ_NONE;
281 snd_bt87x_writel(chip, REG_INT_STAT, irq_status);
282
283 if (irq_status & ERROR_INTERRUPTS) {
284 if (irq_status & (INT_FBUS | INT_FTRGT))
285 snd_printk(KERN_WARNING "FIFO overrun, status %#08x\n", status);
286 if (irq_status & INT_OCERR)
287 snd_printk(KERN_ERR "internal RISC error, status %#08x\n", status);
288 if (irq_status & (INT_PPERR | INT_RIPERR | INT_PABORT))
289 snd_bt87x_pci_error(chip, irq_status);
290 }
291 if ((irq_status & INT_RISCI) && (chip->reg_control & CTL_ACAP_EN)) {
292 int current_block, irq_block;
293
294 /* assume that exactly one line has been recorded */
295 chip->current_line = (chip->current_line + 1) % chip->lines;
296 /* but check if some interrupts have been skipped */
297 current_block = chip->current_line * 16 / chip->lines;
298 irq_block = status >> INT_RISCS_SHIFT;
299 if (current_block != irq_block)
300 chip->current_line = (irq_block * chip->lines + 15) / 16;
301
302 snd_pcm_period_elapsed(chip->substream);
303 }
304 return IRQ_HANDLED;
305 }
306
307 static struct snd_pcm_hardware snd_bt87x_digital_hw = {
308 .info = SNDRV_PCM_INFO_MMAP |
309 SNDRV_PCM_INFO_INTERLEAVED |
310 SNDRV_PCM_INFO_BLOCK_TRANSFER |
311 SNDRV_PCM_INFO_MMAP_VALID,
312 .formats = SNDRV_PCM_FMTBIT_S16_LE,
313 .rates = 0, /* set at runtime */
314 .channels_min = 2,
315 .channels_max = 2,
316 .buffer_bytes_max = 255 * 4092,
317 .period_bytes_min = 32,
318 .period_bytes_max = 4092,
319 .periods_min = 2,
320 .periods_max = 255,
321 };
322
323 static struct snd_pcm_hardware snd_bt87x_analog_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 | SNDRV_PCM_FMTBIT_S8,
329 .rates = SNDRV_PCM_RATE_KNOT,
330 .rate_min = ANALOG_CLOCK / CLOCK_DIV_MAX,
331 .rate_max = ANALOG_CLOCK / CLOCK_DIV_MIN,
332 .channels_min = 1,
333 .channels_max = 1,
334 .buffer_bytes_max = 255 * 4092,
335 .period_bytes_min = 32,
336 .period_bytes_max = 4092,
337 .periods_min = 2,
338 .periods_max = 255,
339 };
340
341 static int snd_bt87x_set_digital_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
342 {
343 static struct {
344 int rate;
345 unsigned int bit;
346 } ratebits[] = {
347 {8000, SNDRV_PCM_RATE_8000},
348 {11025, SNDRV_PCM_RATE_11025},
349 {16000, SNDRV_PCM_RATE_16000},
350 {22050, SNDRV_PCM_RATE_22050},
351 {32000, SNDRV_PCM_RATE_32000},
352 {44100, SNDRV_PCM_RATE_44100},
353 {48000, SNDRV_PCM_RATE_48000}
354 };
355 int i;
356
357 chip->reg_control |= CTL_DA_IOM_DA;
358 runtime->hw = snd_bt87x_digital_hw;
359 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
360 for (i = 0; i < ARRAY_SIZE(ratebits); ++i)
361 if (chip->dig_rate == ratebits[i].rate) {
362 runtime->hw.rates = ratebits[i].bit;
363 break;
364 }
365 runtime->hw.rate_min = chip->dig_rate;
366 runtime->hw.rate_max = chip->dig_rate;
367 return 0;
368 }
369
370 static int snd_bt87x_set_analog_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
371 {
372 static struct snd_ratnum analog_clock = {
373 .num = ANALOG_CLOCK,
374 .den_min = CLOCK_DIV_MIN,
375 .den_max = CLOCK_DIV_MAX,
376 .den_step = 1
377 };
378 static struct snd_pcm_hw_constraint_ratnums constraint_rates = {
379 .nrats = 1,
380 .rats = &analog_clock
381 };
382
383 chip->reg_control &= ~CTL_DA_IOM_DA;
384 runtime->hw = snd_bt87x_analog_hw;
385 return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
386 &constraint_rates);
387 }
388
389 static int snd_bt87x_pcm_open(struct snd_pcm_substream *substream)
390 {
391 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
392 struct snd_pcm_runtime *runtime = substream->runtime;
393 int err;
394
395 if (test_and_set_bit(0, &chip->opened))
396 return -EBUSY;
397
398 if (substream->pcm->device == DEVICE_DIGITAL)
399 err = snd_bt87x_set_digital_hw(chip, runtime);
400 else
401 err = snd_bt87x_set_analog_hw(chip, runtime);
402 if (err < 0)
403 goto _error;
404
405 err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
406 if (err < 0)
407 goto _error;
408
409 chip->substream = substream;
410 return 0;
411
412 _error:
413 clear_bit(0, &chip->opened);
414 smp_mb__after_clear_bit();
415 return err;
416 }
417
418 static int snd_bt87x_close(struct snd_pcm_substream *substream)
419 {
420 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
421
422 chip->substream = NULL;
423 clear_bit(0, &chip->opened);
424 smp_mb__after_clear_bit();
425 return 0;
426 }
427
428 static int snd_bt87x_hw_params(struct snd_pcm_substream *substream,
429 struct snd_pcm_hw_params *hw_params)
430 {
431 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
432 int err;
433
434 err = snd_pcm_lib_malloc_pages(substream,
435 params_buffer_bytes(hw_params));
436 if (err < 0)
437 return err;
438 return snd_bt87x_create_risc(chip, substream,
439 params_periods(hw_params),
440 params_period_bytes(hw_params));
441 }
442
443 static int snd_bt87x_hw_free(struct snd_pcm_substream *substream)
444 {
445 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
446
447 snd_bt87x_free_risc(chip);
448 snd_pcm_lib_free_pages(substream);
449 return 0;
450 }
451
452 static int snd_bt87x_prepare(struct snd_pcm_substream *substream)
453 {
454 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
455 struct snd_pcm_runtime *runtime = substream->runtime;
456 int decimation;
457
458 spin_lock_irq(&chip->reg_lock);
459 chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
460 decimation = (ANALOG_CLOCK + runtime->rate / 4) / runtime->rate;
461 chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
462 if (runtime->format == SNDRV_PCM_FORMAT_S8)
463 chip->reg_control |= CTL_DA_SBR;
464 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
465 spin_unlock_irq(&chip->reg_lock);
466 return 0;
467 }
468
469 static int snd_bt87x_start(struct snd_bt87x *chip)
470 {
471 spin_lock(&chip->reg_lock);
472 chip->current_line = 0;
473 chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
474 snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
475 snd_bt87x_writel(chip, REG_PACKET_LEN,
476 chip->line_bytes | (chip->lines << 16));
477 snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
478 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
479 spin_unlock(&chip->reg_lock);
480 return 0;
481 }
482
483 static int snd_bt87x_stop(struct snd_bt87x *chip)
484 {
485 spin_lock(&chip->reg_lock);
486 chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
487 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
488 snd_bt87x_writel(chip, REG_INT_MASK, 0);
489 snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
490 spin_unlock(&chip->reg_lock);
491 return 0;
492 }
493
494 static int snd_bt87x_trigger(struct snd_pcm_substream *substream, int cmd)
495 {
496 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
497
498 switch (cmd) {
499 case SNDRV_PCM_TRIGGER_START:
500 return snd_bt87x_start(chip);
501 case SNDRV_PCM_TRIGGER_STOP:
502 return snd_bt87x_stop(chip);
503 default:
504 return -EINVAL;
505 }
506 }
507
508 static snd_pcm_uframes_t snd_bt87x_pointer(struct snd_pcm_substream *substream)
509 {
510 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
511 struct snd_pcm_runtime *runtime = substream->runtime;
512
513 return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
514 }
515
516 static struct snd_pcm_ops snd_bt87x_pcm_ops = {
517 .open = snd_bt87x_pcm_open,
518 .close = snd_bt87x_close,
519 .ioctl = snd_pcm_lib_ioctl,
520 .hw_params = snd_bt87x_hw_params,
521 .hw_free = snd_bt87x_hw_free,
522 .prepare = snd_bt87x_prepare,
523 .trigger = snd_bt87x_trigger,
524 .pointer = snd_bt87x_pointer,
525 .page = snd_pcm_sgbuf_ops_page,
526 };
527
528 static int snd_bt87x_capture_volume_info(struct snd_kcontrol *kcontrol,
529 struct snd_ctl_elem_info *info)
530 {
531 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
532 info->count = 1;
533 info->value.integer.min = 0;
534 info->value.integer.max = 15;
535 return 0;
536 }
537
538 static int snd_bt87x_capture_volume_get(struct snd_kcontrol *kcontrol,
539 struct snd_ctl_elem_value *value)
540 {
541 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
542
543 value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
544 return 0;
545 }
546
547 static int snd_bt87x_capture_volume_put(struct snd_kcontrol *kcontrol,
548 struct snd_ctl_elem_value *value)
549 {
550 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
551 u32 old_control;
552 int changed;
553
554 spin_lock_irq(&chip->reg_lock);
555 old_control = chip->reg_control;
556 chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
557 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
558 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
559 changed = old_control != chip->reg_control;
560 spin_unlock_irq(&chip->reg_lock);
561 return changed;
562 }
563
564 static struct snd_kcontrol_new snd_bt87x_capture_volume = {
565 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
566 .name = "Capture Volume",
567 .info = snd_bt87x_capture_volume_info,
568 .get = snd_bt87x_capture_volume_get,
569 .put = snd_bt87x_capture_volume_put,
570 };
571
572 static int snd_bt87x_capture_boost_info(struct snd_kcontrol *kcontrol,
573 struct snd_ctl_elem_info *info)
574 {
575 info->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
576 info->count = 1;
577 info->value.integer.min = 0;
578 info->value.integer.max = 1;
579 return 0;
580 }
581
582 static int snd_bt87x_capture_boost_get(struct snd_kcontrol *kcontrol,
583 struct snd_ctl_elem_value *value)
584 {
585 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
586
587 value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
588 return 0;
589 }
590
591 static int snd_bt87x_capture_boost_put(struct snd_kcontrol *kcontrol,
592 struct snd_ctl_elem_value *value)
593 {
594 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
595 u32 old_control;
596 int changed;
597
598 spin_lock_irq(&chip->reg_lock);
599 old_control = chip->reg_control;
600 chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
601 | (value->value.integer.value[0] ? CTL_A_G2X : 0);
602 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
603 changed = chip->reg_control != old_control;
604 spin_unlock_irq(&chip->reg_lock);
605 return changed;
606 }
607
608 static struct snd_kcontrol_new snd_bt87x_capture_boost = {
609 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
610 .name = "Capture Boost",
611 .info = snd_bt87x_capture_boost_info,
612 .get = snd_bt87x_capture_boost_get,
613 .put = snd_bt87x_capture_boost_put,
614 };
615
616 static int snd_bt87x_capture_source_info(struct snd_kcontrol *kcontrol,
617 struct snd_ctl_elem_info *info)
618 {
619 static char *texts[3] = {"TV Tuner", "FM", "Mic/Line"};
620
621 info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
622 info->count = 1;
623 info->value.enumerated.items = 3;
624 if (info->value.enumerated.item > 2)
625 info->value.enumerated.item = 2;
626 strcpy(info->value.enumerated.name, texts[info->value.enumerated.item]);
627 return 0;
628 }
629
630 static int snd_bt87x_capture_source_get(struct snd_kcontrol *kcontrol,
631 struct snd_ctl_elem_value *value)
632 {
633 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
634
635 value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
636 return 0;
637 }
638
639 static int snd_bt87x_capture_source_put(struct snd_kcontrol *kcontrol,
640 struct snd_ctl_elem_value *value)
641 {
642 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
643 u32 old_control;
644 int changed;
645
646 spin_lock_irq(&chip->reg_lock);
647 old_control = chip->reg_control;
648 chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
649 | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
650 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
651 changed = chip->reg_control != old_control;
652 spin_unlock_irq(&chip->reg_lock);
653 return changed;
654 }
655
656 static struct snd_kcontrol_new snd_bt87x_capture_source = {
657 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
658 .name = "Capture Source",
659 .info = snd_bt87x_capture_source_info,
660 .get = snd_bt87x_capture_source_get,
661 .put = snd_bt87x_capture_source_put,
662 };
663
664 static int snd_bt87x_free(struct snd_bt87x *chip)
665 {
666 if (chip->mmio) {
667 snd_bt87x_stop(chip);
668 if (chip->irq >= 0)
669 synchronize_irq(chip->irq);
670
671 iounmap(chip->mmio);
672 }
673 if (chip->irq >= 0)
674 free_irq(chip->irq, chip);
675 pci_release_regions(chip->pci);
676 pci_disable_device(chip->pci);
677 kfree(chip);
678 return 0;
679 }
680
681 static int snd_bt87x_dev_free(struct snd_device *device)
682 {
683 struct snd_bt87x *chip = device->device_data;
684 return snd_bt87x_free(chip);
685 }
686
687 static int __devinit snd_bt87x_pcm(struct snd_bt87x *chip, int device, char *name)
688 {
689 int err;
690 struct snd_pcm *pcm;
691
692 err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
693 if (err < 0)
694 return err;
695 pcm->private_data = chip;
696 strcpy(pcm->name, name);
697 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
698 return snd_pcm_lib_preallocate_pages_for_all(pcm,
699 SNDRV_DMA_TYPE_DEV_SG,
700 snd_dma_pci_data(chip->pci),
701 128 * 1024,
702 ALIGN(255 * 4092, 1024));
703 }
704
705 static int __devinit snd_bt87x_create(struct snd_card *card,
706 struct pci_dev *pci,
707 struct snd_bt87x **rchip)
708 {
709 struct snd_bt87x *chip;
710 int err;
711 static struct snd_device_ops ops = {
712 .dev_free = snd_bt87x_dev_free
713 };
714
715 *rchip = NULL;
716
717 err = pci_enable_device(pci);
718 if (err < 0)
719 return err;
720
721 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
722 if (!chip) {
723 pci_disable_device(pci);
724 return -ENOMEM;
725 }
726 chip->card = card;
727 chip->pci = pci;
728 chip->irq = -1;
729 spin_lock_init(&chip->reg_lock);
730
731 if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) {
732 kfree(chip);
733 pci_disable_device(pci);
734 return err;
735 }
736 chip->mmio = ioremap_nocache(pci_resource_start(pci, 0),
737 pci_resource_len(pci, 0));
738 if (!chip->mmio) {
739 snd_bt87x_free(chip);
740 snd_printk(KERN_ERR "cannot remap io memory\n");
741 return -ENOMEM;
742 }
743
744 chip->reg_control = CTL_DA_ES2 | CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
745 chip->interrupt_mask = MY_INTERRUPTS;
746 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
747 snd_bt87x_writel(chip, REG_INT_MASK, 0);
748 snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
749
750 if (request_irq(pci->irq, snd_bt87x_interrupt, IRQF_SHARED,
751 "Bt87x audio", chip)) {
752 snd_bt87x_free(chip);
753 snd_printk(KERN_ERR "cannot grab irq\n");
754 return -EBUSY;
755 }
756 chip->irq = pci->irq;
757 pci_set_master(pci);
758 synchronize_irq(chip->irq);
759
760 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
761 if (err < 0) {
762 snd_bt87x_free(chip);
763 return err;
764 }
765 snd_card_set_dev(card, &pci->dev);
766 *rchip = chip;
767 return 0;
768 }
769
770 #define BT_DEVICE(chip, subvend, subdev, rate) \
771 { .vendor = PCI_VENDOR_ID_BROOKTREE, \
772 .device = chip, \
773 .subvendor = subvend, .subdevice = subdev, \
774 .driver_data = rate }
775
776 /* driver_data is the default digital_rate value for that device */
777 static struct pci_device_id snd_bt87x_ids[] = {
778 /* Hauppauge WinTV series */
779 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0x13eb, 32000),
780 /* Hauppauge WinTV series */
781 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, 0x0070, 0x13eb, 32000),
782 /* Viewcast Osprey 200 */
783 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff01, 44100),
784 /* ATI TV-Wonder */
785 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1002, 0x0001, 32000),
786 /* Leadtek Winfast tv 2000xp delux */
787 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x107d, 0x6606, 32000),
788 /* Voodoo TV 200 */
789 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x121a, 0x3000, 32000),
790 /* AVerMedia Studio No. 103, 203, ...? */
791 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1461, 0x0003, 48000),
792 { }
793 };
794 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
795
796 /* cards known not to have audio
797 * (DVB cards use the audio function to transfer MPEG data) */
798 static struct {
799 unsigned short subvendor, subdevice;
800 } blacklist[] __devinitdata = {
801 {0x0071, 0x0101}, /* Nebula Electronics DigiTV */
802 {0x11bd, 0x001c}, /* Pinnacle PCTV Sat */
803 {0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */
804 {0x1461, 0x0761}, /* AVermedia AverTV DVB-T */
805 {0x1461, 0x0771}, /* AVermedia DVB-T 771 */
806 {0x1822, 0x0001}, /* Twinhan VisionPlus DVB-T */
807 {0x18ac, 0xd500}, /* DVICO FusionHDTV 5 Lite */
808 {0x18ac, 0xdb10}, /* DVICO FusionHDTV DVB-T Lite */
809 {0x18ac, 0xdb11}, /* Ultraview DVB-T Lite */
810 {0x270f, 0xfc00}, /* Chaintech Digitop DST-1000 DVB-S */
811 {0x7063, 0x2000}, /* pcHDTV HD-2000 TV */
812 };
813
814 static struct pci_driver driver;
815
816 /* return the rate of the card, or a negative value if it's blacklisted */
817 static int __devinit snd_bt87x_detect_card(struct pci_dev *pci)
818 {
819 int i;
820 const struct pci_device_id *supported;
821
822 supported = pci_match_device(&driver, pci);
823 if (supported && supported->driver_data > 0)
824 return supported->driver_data;
825
826 for (i = 0; i < ARRAY_SIZE(blacklist); ++i)
827 if (blacklist[i].subvendor == pci->subsystem_vendor &&
828 blacklist[i].subdevice == pci->subsystem_device) {
829 snd_printdd(KERN_INFO "card %#04x-%#04x:%#04x has no audio\n",
830 pci->device, pci->subsystem_vendor, pci->subsystem_device);
831 return -EBUSY;
832 }
833
834 snd_printk(KERN_INFO "unknown card %#04x-%#04x:%#04x, using default rate 32000\n",
835 pci->device, pci->subsystem_vendor, pci->subsystem_device);
836 snd_printk(KERN_DEBUG "please mail id, board name, and, "
837 "if it works, the correct digital_rate option to "
838 "<alsa-devel@alsa-project.org>\n");
839 return 32000; /* default rate */
840 }
841
842 static int __devinit snd_bt87x_probe(struct pci_dev *pci,
843 const struct pci_device_id *pci_id)
844 {
845 static int dev;
846 struct snd_card *card;
847 struct snd_bt87x *chip;
848 int err, rate;
849
850 rate = pci_id->driver_data;
851 if (! rate)
852 if ((rate = snd_bt87x_detect_card(pci)) <= 0)
853 return -ENODEV;
854
855 if (dev >= SNDRV_CARDS)
856 return -ENODEV;
857 if (!enable[dev]) {
858 ++dev;
859 return -ENOENT;
860 }
861
862 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
863 if (!card)
864 return -ENOMEM;
865
866 err = snd_bt87x_create(card, pci, &chip);
867 if (err < 0)
868 goto _error;
869
870 if (digital_rate[dev] > 0)
871 chip->dig_rate = digital_rate[dev];
872 else
873 chip->dig_rate = rate;
874
875 err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
876 if (err < 0)
877 goto _error;
878 err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
879 if (err < 0)
880 goto _error;
881
882 err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_volume, chip));
883 if (err < 0)
884 goto _error;
885 err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_boost, chip));
886 if (err < 0)
887 goto _error;
888 err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_source, chip));
889 if (err < 0)
890 goto _error;
891
892 strcpy(card->driver, "Bt87x");
893 sprintf(card->shortname, "Brooktree Bt%x", pci->device);
894 sprintf(card->longname, "%s at %#llx, irq %i",
895 card->shortname, (unsigned long long)pci_resource_start(pci, 0),
896 chip->irq);
897 strcpy(card->mixername, "Bt87x");
898
899 err = snd_card_register(card);
900 if (err < 0)
901 goto _error;
902
903 pci_set_drvdata(pci, card);
904 ++dev;
905 return 0;
906
907 _error:
908 snd_card_free(card);
909 return err;
910 }
911
912 static void __devexit snd_bt87x_remove(struct pci_dev *pci)
913 {
914 snd_card_free(pci_get_drvdata(pci));
915 pci_set_drvdata(pci, NULL);
916 }
917
918 /* default entries for all Bt87x cards - it's not exported */
919 /* driver_data is set to 0 to call detection */
920 static struct pci_device_id snd_bt87x_default_ids[] __devinitdata = {
921 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, PCI_ANY_ID, PCI_ANY_ID, 0),
922 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, PCI_ANY_ID, PCI_ANY_ID, 0),
923 { }
924 };
925
926 static struct pci_driver driver = {
927 .name = "Bt87x",
928 .id_table = snd_bt87x_ids,
929 .probe = snd_bt87x_probe,
930 .remove = __devexit_p(snd_bt87x_remove),
931 };
932
933 static int __init alsa_card_bt87x_init(void)
934 {
935 if (load_all)
936 driver.id_table = snd_bt87x_default_ids;
937 return pci_register_driver(&driver);
938 }
939
940 static void __exit alsa_card_bt87x_exit(void)
941 {
942 pci_unregister_driver(&driver);
943 }
944
945 module_init(alsa_card_bt87x_init)
946 module_exit(alsa_card_bt87x_exit)
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