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VIRTIO: Use __skb_queue_purge()
[linux-2.6/mini2440.git] / sound / pci / bt87x.c
blob4ecdd635ed1d34bcf06749aa7dcc4ad7f6b0acb3
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 <linux/init.h>
25 #include <linux/interrupt.h>
26 #include <linux/pci.h>
27 #include <linux/slab.h>
28 #include <linux/moduleparam.h>
29 #include <linux/bitops.h>
30 #include <asm/io.h>
31 #include <sound/core.h>
32 #include <sound/pcm.h>
33 #include <sound/pcm_params.h>
34 #include <sound/control.h>
35 #include <sound/initval.h>
36
37 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
38 MODULE_DESCRIPTION("Brooktree Bt87x audio driver");
39 MODULE_LICENSE("GPL");
40 MODULE_SUPPORTED_DEVICE("{{Brooktree,Bt878},"
41 "{Brooktree,Bt879}}");
42
43 static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */
44 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
45 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
46 static int digital_rate[SNDRV_CARDS]; /* digital input rate */
47 static int load_all; /* allow to load the non-whitelisted cards */
48
49 module_param_array(index, int, NULL, 0444);
50 MODULE_PARM_DESC(index, "Index value for Bt87x soundcard");
51 module_param_array(id, charp, NULL, 0444);
52 MODULE_PARM_DESC(id, "ID string for Bt87x soundcard");
53 module_param_array(enable, bool, NULL, 0444);
54 MODULE_PARM_DESC(enable, "Enable Bt87x soundcard");
55 module_param_array(digital_rate, int, NULL, 0444);
56 MODULE_PARM_DESC(digital_rate, "Digital input rate for Bt87x soundcard");
57 module_param(load_all, bool, 0444);
58 MODULE_PARM_DESC(load_all, "Allow to load the non-whitelisted cards");
59
60
61 /* register offsets */
62 #define REG_INT_STAT 0x100 /* interrupt status */
63 #define REG_INT_MASK 0x104 /* interrupt mask */
64 #define REG_GPIO_DMA_CTL 0x10c /* audio control */
65 #define REG_PACKET_LEN 0x110 /* audio packet lengths */
66 #define REG_RISC_STRT_ADD 0x114 /* RISC program start address */
67 #define REG_RISC_COUNT 0x120 /* RISC program counter */
68
69 /* interrupt bits */
70 #define INT_OFLOW (1 << 3) /* audio A/D overflow */
71 #define INT_RISCI (1 << 11) /* RISC instruction IRQ bit set */
72 #define INT_FBUS (1 << 12) /* FIFO overrun due to bus access latency */
73 #define INT_FTRGT (1 << 13) /* FIFO overrun due to target latency */
74 #define INT_FDSR (1 << 14) /* FIFO data stream resynchronization */
75 #define INT_PPERR (1 << 15) /* PCI parity error */
76 #define INT_RIPERR (1 << 16) /* RISC instruction parity error */
77 #define INT_PABORT (1 << 17) /* PCI master or target abort */
78 #define INT_OCERR (1 << 18) /* invalid opcode */
79 #define INT_SCERR (1 << 19) /* sync counter overflow */
80 #define INT_RISC_EN (1 << 27) /* DMA controller running */
81 #define INT_RISCS_SHIFT 28 /* RISC status bits */
82
83 /* audio control bits */
84 #define CTL_FIFO_ENABLE (1 << 0) /* enable audio data FIFO */
85 #define CTL_RISC_ENABLE (1 << 1) /* enable audio DMA controller */
86 #define CTL_PKTP_4 (0 << 2) /* packet mode FIFO trigger point - 4 DWORDs */
87 #define CTL_PKTP_8 (1 << 2) /* 8 DWORDs */
88 #define CTL_PKTP_16 (2 << 2) /* 16 DWORDs */
89 #define CTL_ACAP_EN (1 << 4) /* enable audio capture */
90 #define CTL_DA_APP (1 << 5) /* GPIO input */
91 #define CTL_DA_IOM_AFE (0 << 6) /* audio A/D input */
92 #define CTL_DA_IOM_DA (1 << 6) /* digital audio input */
93 #define CTL_DA_SDR_SHIFT 8 /* DDF first stage decimation rate */
94 #define CTL_DA_SDR_MASK (0xf<< 8)
95 #define CTL_DA_LMT (1 << 12) /* limit audio data values */
96 #define CTL_DA_ES2 (1 << 13) /* enable DDF stage 2 */
97 #define CTL_DA_SBR (1 << 14) /* samples rounded to 8 bits */
98 #define CTL_DA_DPM (1 << 15) /* data packet mode */
99 #define CTL_DA_LRD_SHIFT 16 /* ALRCK delay */
100 #define CTL_DA_MLB (1 << 21) /* MSB/LSB format */
101 #define CTL_DA_LRI (1 << 22) /* left/right indication */
102 #define CTL_DA_SCE (1 << 23) /* sample clock edge */
103 #define CTL_A_SEL_STV (0 << 24) /* TV tuner audio input */
104 #define CTL_A_SEL_SFM (1 << 24) /* FM audio input */
105 #define CTL_A_SEL_SML (2 << 24) /* mic/line audio input */
106 #define CTL_A_SEL_SMXC (3 << 24) /* MUX bypass */
107 #define CTL_A_SEL_SHIFT 24
108 #define CTL_A_SEL_MASK (3 << 24)
109 #define CTL_A_PWRDN (1 << 26) /* analog audio power-down */
110 #define CTL_A_G2X (1 << 27) /* audio gain boost */
111 #define CTL_A_GAIN_SHIFT 28 /* audio input gain */
112 #define CTL_A_GAIN_MASK (0xf<<28)
113
114 /* RISC instruction opcodes */
115 #define RISC_WRITE (0x1 << 28) /* write FIFO data to memory at address */
116 #define RISC_WRITEC (0x5 << 28) /* write FIFO data to memory at current address */
117 #define RISC_SKIP (0x2 << 28) /* skip FIFO data */
118 #define RISC_JUMP (0x7 << 28) /* jump to address */
119 #define RISC_SYNC (0x8 << 28) /* synchronize with FIFO */
120
121 /* RISC instruction bits */
122 #define RISC_BYTES_ENABLE (0xf << 12) /* byte enable bits */
123 #define RISC_RESYNC ( 1 << 15) /* disable FDSR errors */
124 #define RISC_SET_STATUS_SHIFT 16 /* set status bits */
125 #define RISC_RESET_STATUS_SHIFT 20 /* clear status bits */
126 #define RISC_IRQ ( 1 << 24) /* interrupt */
127 #define RISC_EOL ( 1 << 26) /* end of line */
128 #define RISC_SOL ( 1 << 27) /* start of line */
129
130 /* SYNC status bits values */
131 #define RISC_SYNC_FM1 0x6
132 #define RISC_SYNC_VRO 0xc
133
134 #define ANALOG_CLOCK 1792000
135 #ifdef CONFIG_SND_BT87X_OVERCLOCK
136 #define CLOCK_DIV_MIN 1
137 #else
138 #define CLOCK_DIV_MIN 4
139 #endif
140 #define CLOCK_DIV_MAX 15
141
142 #define ERROR_INTERRUPTS (INT_FBUS | INT_FTRGT | INT_PPERR | \
143 INT_RIPERR | INT_PABORT | INT_OCERR)
144 #define MY_INTERRUPTS (INT_RISCI | ERROR_INTERRUPTS)
145
146 /* SYNC, one WRITE per line, one extra WRITE per page boundary, SYNC, JUMP */
147 #define MAX_RISC_SIZE ((1 + 255 + (PAGE_ALIGN(255 * 4092) / PAGE_SIZE - 1) + 1 + 1) * 8)
148
149 /* Cards with configuration information */
150 enum snd_bt87x_boardid {
151 SND_BT87X_BOARD_UNKNOWN,
152 SND_BT87X_BOARD_GENERIC, /* both an & dig interfaces, 32kHz */
153 SND_BT87X_BOARD_ANALOG, /* board with no external A/D */
154 SND_BT87X_BOARD_OSPREY2x0,
155 SND_BT87X_BOARD_OSPREY440,
156 SND_BT87X_BOARD_AVPHONE98,
157 };
158
159 /* Card configuration */
160 struct snd_bt87x_board {
161 int dig_rate; /* Digital input sampling rate */
162 u32 digital_fmt; /* Register settings for digital input */
163 unsigned no_analog:1; /* No analog input */
164 unsigned no_digital:1; /* No digital input */
165 };
166
167 static __devinitdata struct snd_bt87x_board snd_bt87x_boards[] = {
168 [SND_BT87X_BOARD_UNKNOWN] = {
169 .dig_rate = 32000, /* just a guess */
170 },
171 [SND_BT87X_BOARD_GENERIC] = {
172 .dig_rate = 32000,
173 },
174 [SND_BT87X_BOARD_ANALOG] = {
175 .no_digital = 1,
176 },
177 [SND_BT87X_BOARD_OSPREY2x0] = {
178 .dig_rate = 44100,
179 .digital_fmt = CTL_DA_LRI | (1 << CTL_DA_LRD_SHIFT),
180 },
181 [SND_BT87X_BOARD_OSPREY440] = {
182 .dig_rate = 32000,
183 .digital_fmt = CTL_DA_LRI | (1 << CTL_DA_LRD_SHIFT),
184 .no_analog = 1,
185 },
186 [SND_BT87X_BOARD_AVPHONE98] = {
187 .dig_rate = 48000,
188 },
189 };
190
191 struct snd_bt87x {
192 struct snd_card *card;
193 struct pci_dev *pci;
194 struct snd_bt87x_board board;
195
196 void __iomem *mmio;
197 int irq;
198
199 spinlock_t reg_lock;
200 unsigned long opened;
201 struct snd_pcm_substream *substream;
202
203 struct snd_dma_buffer dma_risc;
204 unsigned int line_bytes;
205 unsigned int lines;
206
207 u32 reg_control;
208 u32 interrupt_mask;
209
210 int current_line;
211
212 int pci_parity_errors;
213 };
214
215 enum { DEVICE_DIGITAL, DEVICE_ANALOG };
216
217 static inline u32 snd_bt87x_readl(struct snd_bt87x *chip, u32 reg)
218 {
219 return readl(chip->mmio + reg);
220 }
221
222 static inline void snd_bt87x_writel(struct snd_bt87x *chip, u32 reg, u32 value)
223 {
224 writel(value, chip->mmio + reg);
225 }
226
227 static int snd_bt87x_create_risc(struct snd_bt87x *chip, struct snd_pcm_substream *substream,
228 unsigned int periods, unsigned int period_bytes)
229 {
230 struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
231 unsigned int i, offset;
232 u32 *risc;
233
234 if (chip->dma_risc.area == NULL) {
235 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
236 PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
237 return -ENOMEM;
238 }
239 risc = (u32 *)chip->dma_risc.area;
240 offset = 0;
241 *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
242 *risc++ = cpu_to_le32(0);
243 for (i = 0; i < periods; ++i) {
244 u32 rest;
245
246 rest = period_bytes;
247 do {
248 u32 cmd, len;
249
250 len = PAGE_SIZE - (offset % PAGE_SIZE);
251 if (len > rest)
252 len = rest;
253 cmd = RISC_WRITE | len;
254 if (rest == period_bytes) {
255 u32 block = i * 16 / periods;
256 cmd |= RISC_SOL;
257 cmd |= block << RISC_SET_STATUS_SHIFT;
258 cmd |= (~block & 0xf) << RISC_RESET_STATUS_SHIFT;
259 }
260 if (len == rest)
261 cmd |= RISC_EOL | RISC_IRQ;
262 *risc++ = cpu_to_le32(cmd);
263 *risc++ = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, offset));
264 offset += len;
265 rest -= len;
266 } while (rest > 0);
267 }
268 *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO);
269 *risc++ = cpu_to_le32(0);
270 *risc++ = cpu_to_le32(RISC_JUMP);
271 *risc++ = cpu_to_le32(chip->dma_risc.addr);
272 chip->line_bytes = period_bytes;
273 chip->lines = periods;
274 return 0;
275 }
276
277 static void snd_bt87x_free_risc(struct snd_bt87x *chip)
278 {
279 if (chip->dma_risc.area) {
280 snd_dma_free_pages(&chip->dma_risc);
281 chip->dma_risc.area = NULL;
282 }
283 }
284
285 static void snd_bt87x_pci_error(struct snd_bt87x *chip, unsigned int status)
286 {
287 u16 pci_status;
288
289 pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
290 pci_status &= PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
291 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
292 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY;
293 pci_write_config_word(chip->pci, PCI_STATUS, pci_status);
294 if (pci_status != PCI_STATUS_DETECTED_PARITY)
295 snd_printk(KERN_ERR "Aieee - PCI error! status %#08x, PCI status %#04x\n",
296 status & ERROR_INTERRUPTS, pci_status);
297 else {
298 snd_printk(KERN_ERR "Aieee - PCI parity error detected!\n");
299 /* error 'handling' similar to aic7xxx_pci.c: */
300 chip->pci_parity_errors++;
301 if (chip->pci_parity_errors > 20) {
302 snd_printk(KERN_ERR "Too many PCI parity errors observed.\n");
303 snd_printk(KERN_ERR "Some device on this bus is generating bad parity.\n");
304 snd_printk(KERN_ERR "This is an error *observed by*, not *generated by*, this card.\n");
305 snd_printk(KERN_ERR "PCI parity error checking has been disabled.\n");
306 chip->interrupt_mask &= ~(INT_PPERR | INT_RIPERR);
307 snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
308 }
309 }
310 }
311
312 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id)
313 {
314 struct snd_bt87x *chip = dev_id;
315 unsigned int status, irq_status;
316
317 status = snd_bt87x_readl(chip, REG_INT_STAT);
318 irq_status = status & chip->interrupt_mask;
319 if (!irq_status)
320 return IRQ_NONE;
321 snd_bt87x_writel(chip, REG_INT_STAT, irq_status);
322
323 if (irq_status & ERROR_INTERRUPTS) {
324 if (irq_status & (INT_FBUS | INT_FTRGT))
325 snd_printk(KERN_WARNING "FIFO overrun, status %#08x\n", status);
326 if (irq_status & INT_OCERR)
327 snd_printk(KERN_ERR "internal RISC error, status %#08x\n", status);
328 if (irq_status & (INT_PPERR | INT_RIPERR | INT_PABORT))
329 snd_bt87x_pci_error(chip, irq_status);
330 }
331 if ((irq_status & INT_RISCI) && (chip->reg_control & CTL_ACAP_EN)) {
332 int current_block, irq_block;
333
334 /* assume that exactly one line has been recorded */
335 chip->current_line = (chip->current_line + 1) % chip->lines;
336 /* but check if some interrupts have been skipped */
337 current_block = chip->current_line * 16 / chip->lines;
338 irq_block = status >> INT_RISCS_SHIFT;
339 if (current_block != irq_block)
340 chip->current_line = (irq_block * chip->lines + 15) / 16;
341
342 snd_pcm_period_elapsed(chip->substream);
343 }
344 return IRQ_HANDLED;
345 }
346
347 static struct snd_pcm_hardware snd_bt87x_digital_hw = {
348 .info = SNDRV_PCM_INFO_MMAP |
349 SNDRV_PCM_INFO_INTERLEAVED |
350 SNDRV_PCM_INFO_BLOCK_TRANSFER |
351 SNDRV_PCM_INFO_MMAP_VALID,
352 .formats = SNDRV_PCM_FMTBIT_S16_LE,
353 .rates = 0, /* set at runtime */
354 .channels_min = 2,
355 .channels_max = 2,
356 .buffer_bytes_max = 255 * 4092,
357 .period_bytes_min = 32,
358 .period_bytes_max = 4092,
359 .periods_min = 2,
360 .periods_max = 255,
361 };
362
363 static struct snd_pcm_hardware snd_bt87x_analog_hw = {
364 .info = SNDRV_PCM_INFO_MMAP |
365 SNDRV_PCM_INFO_INTERLEAVED |
366 SNDRV_PCM_INFO_BLOCK_TRANSFER |
367 SNDRV_PCM_INFO_MMAP_VALID,
368 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
369 .rates = SNDRV_PCM_RATE_KNOT,
370 .rate_min = ANALOG_CLOCK / CLOCK_DIV_MAX,
371 .rate_max = ANALOG_CLOCK / CLOCK_DIV_MIN,
372 .channels_min = 1,
373 .channels_max = 1,
374 .buffer_bytes_max = 255 * 4092,
375 .period_bytes_min = 32,
376 .period_bytes_max = 4092,
377 .periods_min = 2,
378 .periods_max = 255,
379 };
380
381 static int snd_bt87x_set_digital_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
382 {
383 chip->reg_control |= CTL_DA_IOM_DA | CTL_A_PWRDN;
384 runtime->hw = snd_bt87x_digital_hw;
385 runtime->hw.rates = snd_pcm_rate_to_rate_bit(chip->board.dig_rate);
386 runtime->hw.rate_min = chip->board.dig_rate;
387 runtime->hw.rate_max = chip->board.dig_rate;
388 return 0;
389 }
390
391 static int snd_bt87x_set_analog_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
392 {
393 static struct snd_ratnum analog_clock = {
394 .num = ANALOG_CLOCK,
395 .den_min = CLOCK_DIV_MIN,
396 .den_max = CLOCK_DIV_MAX,
397 .den_step = 1
398 };
399 static struct snd_pcm_hw_constraint_ratnums constraint_rates = {
400 .nrats = 1,
401 .rats = &analog_clock
402 };
403
404 chip->reg_control &= ~(CTL_DA_IOM_DA | CTL_A_PWRDN);
405 runtime->hw = snd_bt87x_analog_hw;
406 return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
407 &constraint_rates);
408 }
409
410 static int snd_bt87x_pcm_open(struct snd_pcm_substream *substream)
411 {
412 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
413 struct snd_pcm_runtime *runtime = substream->runtime;
414 int err;
415
416 if (test_and_set_bit(0, &chip->opened))
417 return -EBUSY;
418
419 if (substream->pcm->device == DEVICE_DIGITAL)
420 err = snd_bt87x_set_digital_hw(chip, runtime);
421 else
422 err = snd_bt87x_set_analog_hw(chip, runtime);
423 if (err < 0)
424 goto _error;
425
426 err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
427 if (err < 0)
428 goto _error;
429
430 chip->substream = substream;
431 return 0;
432
433 _error:
434 clear_bit(0, &chip->opened);
435 smp_mb__after_clear_bit();
436 return err;
437 }
438
439 static int snd_bt87x_close(struct snd_pcm_substream *substream)
440 {
441 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
442
443 spin_lock_irq(&chip->reg_lock);
444 chip->reg_control |= CTL_A_PWRDN;
445 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
446 spin_unlock_irq(&chip->reg_lock);
447
448 chip->substream = NULL;
449 clear_bit(0, &chip->opened);
450 smp_mb__after_clear_bit();
451 return 0;
452 }
453
454 static int snd_bt87x_hw_params(struct snd_pcm_substream *substream,
455 struct snd_pcm_hw_params *hw_params)
456 {
457 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
458 int err;
459
460 err = snd_pcm_lib_malloc_pages(substream,
461 params_buffer_bytes(hw_params));
462 if (err < 0)
463 return err;
464 return snd_bt87x_create_risc(chip, substream,
465 params_periods(hw_params),
466 params_period_bytes(hw_params));
467 }
468
469 static int snd_bt87x_hw_free(struct snd_pcm_substream *substream)
470 {
471 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
472
473 snd_bt87x_free_risc(chip);
474 snd_pcm_lib_free_pages(substream);
475 return 0;
476 }
477
478 static int snd_bt87x_prepare(struct snd_pcm_substream *substream)
479 {
480 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
481 struct snd_pcm_runtime *runtime = substream->runtime;
482 int decimation;
483
484 spin_lock_irq(&chip->reg_lock);
485 chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
486 decimation = (ANALOG_CLOCK + runtime->rate / 4) / runtime->rate;
487 chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
488 if (runtime->format == SNDRV_PCM_FORMAT_S8)
489 chip->reg_control |= CTL_DA_SBR;
490 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
491 spin_unlock_irq(&chip->reg_lock);
492 return 0;
493 }
494
495 static int snd_bt87x_start(struct snd_bt87x *chip)
496 {
497 spin_lock(&chip->reg_lock);
498 chip->current_line = 0;
499 chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
500 snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
501 snd_bt87x_writel(chip, REG_PACKET_LEN,
502 chip->line_bytes | (chip->lines << 16));
503 snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
504 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
505 spin_unlock(&chip->reg_lock);
506 return 0;
507 }
508
509 static int snd_bt87x_stop(struct snd_bt87x *chip)
510 {
511 spin_lock(&chip->reg_lock);
512 chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
513 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
514 snd_bt87x_writel(chip, REG_INT_MASK, 0);
515 snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
516 spin_unlock(&chip->reg_lock);
517 return 0;
518 }
519
520 static int snd_bt87x_trigger(struct snd_pcm_substream *substream, int cmd)
521 {
522 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
523
524 switch (cmd) {
525 case SNDRV_PCM_TRIGGER_START:
526 return snd_bt87x_start(chip);
527 case SNDRV_PCM_TRIGGER_STOP:
528 return snd_bt87x_stop(chip);
529 default:
530 return -EINVAL;
531 }
532 }
533
534 static snd_pcm_uframes_t snd_bt87x_pointer(struct snd_pcm_substream *substream)
535 {
536 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
537 struct snd_pcm_runtime *runtime = substream->runtime;
538
539 return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
540 }
541
542 static struct snd_pcm_ops snd_bt87x_pcm_ops = {
543 .open = snd_bt87x_pcm_open,
544 .close = snd_bt87x_close,
545 .ioctl = snd_pcm_lib_ioctl,
546 .hw_params = snd_bt87x_hw_params,
547 .hw_free = snd_bt87x_hw_free,
548 .prepare = snd_bt87x_prepare,
549 .trigger = snd_bt87x_trigger,
550 .pointer = snd_bt87x_pointer,
551 .page = snd_pcm_sgbuf_ops_page,
552 };
553
554 static int snd_bt87x_capture_volume_info(struct snd_kcontrol *kcontrol,
555 struct snd_ctl_elem_info *info)
556 {
557 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
558 info->count = 1;
559 info->value.integer.min = 0;
560 info->value.integer.max = 15;
561 return 0;
562 }
563
564 static int snd_bt87x_capture_volume_get(struct snd_kcontrol *kcontrol,
565 struct snd_ctl_elem_value *value)
566 {
567 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
568
569 value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
570 return 0;
571 }
572
573 static int snd_bt87x_capture_volume_put(struct snd_kcontrol *kcontrol,
574 struct snd_ctl_elem_value *value)
575 {
576 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
577 u32 old_control;
578 int changed;
579
580 spin_lock_irq(&chip->reg_lock);
581 old_control = chip->reg_control;
582 chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
583 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
584 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
585 changed = old_control != chip->reg_control;
586 spin_unlock_irq(&chip->reg_lock);
587 return changed;
588 }
589
590 static struct snd_kcontrol_new snd_bt87x_capture_volume = {
591 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
592 .name = "Capture Volume",
593 .info = snd_bt87x_capture_volume_info,
594 .get = snd_bt87x_capture_volume_get,
595 .put = snd_bt87x_capture_volume_put,
596 };
597
598 #define snd_bt87x_capture_boost_info snd_ctl_boolean_mono_info
599
600 static int snd_bt87x_capture_boost_get(struct snd_kcontrol *kcontrol,
601 struct snd_ctl_elem_value *value)
602 {
603 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
604
605 value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
606 return 0;
607 }
608
609 static int snd_bt87x_capture_boost_put(struct snd_kcontrol *kcontrol,
610 struct snd_ctl_elem_value *value)
611 {
612 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
613 u32 old_control;
614 int changed;
615
616 spin_lock_irq(&chip->reg_lock);
617 old_control = chip->reg_control;
618 chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
619 | (value->value.integer.value[0] ? CTL_A_G2X : 0);
620 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
621 changed = chip->reg_control != old_control;
622 spin_unlock_irq(&chip->reg_lock);
623 return changed;
624 }
625
626 static struct snd_kcontrol_new snd_bt87x_capture_boost = {
627 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
628 .name = "Capture Boost",
629 .info = snd_bt87x_capture_boost_info,
630 .get = snd_bt87x_capture_boost_get,
631 .put = snd_bt87x_capture_boost_put,
632 };
633
634 static int snd_bt87x_capture_source_info(struct snd_kcontrol *kcontrol,
635 struct snd_ctl_elem_info *info)
636 {
637 static char *texts[3] = {"TV Tuner", "FM", "Mic/Line"};
638
639 info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
640 info->count = 1;
641 info->value.enumerated.items = 3;
642 if (info->value.enumerated.item > 2)
643 info->value.enumerated.item = 2;
644 strcpy(info->value.enumerated.name, texts[info->value.enumerated.item]);
645 return 0;
646 }
647
648 static int snd_bt87x_capture_source_get(struct snd_kcontrol *kcontrol,
649 struct snd_ctl_elem_value *value)
650 {
651 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
652
653 value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
654 return 0;
655 }
656
657 static int snd_bt87x_capture_source_put(struct snd_kcontrol *kcontrol,
658 struct snd_ctl_elem_value *value)
659 {
660 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
661 u32 old_control;
662 int changed;
663
664 spin_lock_irq(&chip->reg_lock);
665 old_control = chip->reg_control;
666 chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
667 | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
668 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
669 changed = chip->reg_control != old_control;
670 spin_unlock_irq(&chip->reg_lock);
671 return changed;
672 }
673
674 static struct snd_kcontrol_new snd_bt87x_capture_source = {
675 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
676 .name = "Capture Source",
677 .info = snd_bt87x_capture_source_info,
678 .get = snd_bt87x_capture_source_get,
679 .put = snd_bt87x_capture_source_put,
680 };
681
682 static int snd_bt87x_free(struct snd_bt87x *chip)
683 {
684 if (chip->mmio)
685 snd_bt87x_stop(chip);
686 if (chip->irq >= 0)
687 free_irq(chip->irq, chip);
688 if (chip->mmio)
689 iounmap(chip->mmio);
690 pci_release_regions(chip->pci);
691 pci_disable_device(chip->pci);
692 kfree(chip);
693 return 0;
694 }
695
696 static int snd_bt87x_dev_free(struct snd_device *device)
697 {
698 struct snd_bt87x *chip = device->device_data;
699 return snd_bt87x_free(chip);
700 }
701
702 static int __devinit snd_bt87x_pcm(struct snd_bt87x *chip, int device, char *name)
703 {
704 int err;
705 struct snd_pcm *pcm;
706
707 err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
708 if (err < 0)
709 return err;
710 pcm->private_data = chip;
711 strcpy(pcm->name, name);
712 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
713 return snd_pcm_lib_preallocate_pages_for_all(pcm,
714 SNDRV_DMA_TYPE_DEV_SG,
715 snd_dma_pci_data(chip->pci),
716 128 * 1024,
717 ALIGN(255 * 4092, 1024));
718 }
719
720 static int __devinit snd_bt87x_create(struct snd_card *card,
721 struct pci_dev *pci,
722 struct snd_bt87x **rchip)
723 {
724 struct snd_bt87x *chip;
725 int err;
726 static struct snd_device_ops ops = {
727 .dev_free = snd_bt87x_dev_free
728 };
729
730 *rchip = NULL;
731
732 err = pci_enable_device(pci);
733 if (err < 0)
734 return err;
735
736 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
737 if (!chip) {
738 pci_disable_device(pci);
739 return -ENOMEM;
740 }
741 chip->card = card;
742 chip->pci = pci;
743 chip->irq = -1;
744 spin_lock_init(&chip->reg_lock);
745
746 if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) {
747 kfree(chip);
748 pci_disable_device(pci);
749 return err;
750 }
751 chip->mmio = ioremap_nocache(pci_resource_start(pci, 0),
752 pci_resource_len(pci, 0));
753 if (!chip->mmio) {
754 snd_printk(KERN_ERR "cannot remap io memory\n");
755 err = -ENOMEM;
756 goto fail;
757 }
758
759 chip->reg_control = CTL_A_PWRDN | CTL_DA_ES2 |
760 CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
761 chip->interrupt_mask = MY_INTERRUPTS;
762 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
763 snd_bt87x_writel(chip, REG_INT_MASK, 0);
764 snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
765
766 err = request_irq(pci->irq, snd_bt87x_interrupt, IRQF_SHARED,
767 "Bt87x audio", chip);
768 if (err < 0) {
769 snd_printk(KERN_ERR "cannot grab irq %d\n", pci->irq);
770 goto fail;
771 }
772 chip->irq = pci->irq;
773 pci_set_master(pci);
774 synchronize_irq(chip->irq);
775
776 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
777 if (err < 0)
778 goto fail;
779
780 snd_card_set_dev(card, &pci->dev);
781 *rchip = chip;
782 return 0;
783
784 fail:
785 snd_bt87x_free(chip);
786 return err;
787 }
788
789 #define BT_DEVICE(chip, subvend, subdev, id) \
790 { .vendor = PCI_VENDOR_ID_BROOKTREE, \
791 .device = chip, \
792 .subvendor = subvend, .subdevice = subdev, \
793 .driver_data = SND_BT87X_BOARD_ ## id }
794 /* driver_data is the card id for that device */
795
796 static struct pci_device_id snd_bt87x_ids[] = {
797 /* Hauppauge WinTV series */
798 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0x13eb, GENERIC),
799 /* Hauppauge WinTV series */
800 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, 0x0070, 0x13eb, GENERIC),
801 /* Viewcast Osprey 200 */
802 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff01, OSPREY2x0),
803 /* Viewcast Osprey 440 (rate is configurable via gpio) */
804 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff07, OSPREY440),
805 /* ATI TV-Wonder */
806 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1002, 0x0001, GENERIC),
807 /* Leadtek Winfast tv 2000xp delux */
808 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x107d, 0x6606, GENERIC),
809 /* Voodoo TV 200 */
810 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x121a, 0x3000, GENERIC),
811 /* AVerMedia Studio No. 103, 203, ...? */
812 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1461, 0x0003, AVPHONE98),
813 /* Prolink PixelView PV-M4900 */
814 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1554, 0x4011, GENERIC),
815 /* Pinnacle Studio PCTV rave */
816 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0xbd11, 0x1200, GENERIC),
817 { }
818 };
819 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
820
821 /* cards known not to have audio
822 * (DVB cards use the audio function to transfer MPEG data) */
823 static struct {
824 unsigned short subvendor, subdevice;
825 } blacklist[] __devinitdata = {
826 {0x0071, 0x0101}, /* Nebula Electronics DigiTV */
827 {0x11bd, 0x001c}, /* Pinnacle PCTV Sat */
828 {0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */
829 {0x1461, 0x0761}, /* AVermedia AverTV DVB-T */
830 {0x1461, 0x0771}, /* AVermedia DVB-T 771 */
831 {0x1822, 0x0001}, /* Twinhan VisionPlus DVB-T */
832 {0x18ac, 0xd500}, /* DVICO FusionHDTV 5 Lite */
833 {0x18ac, 0xdb10}, /* DVICO FusionHDTV DVB-T Lite */
834 {0x18ac, 0xdb11}, /* Ultraview DVB-T Lite */
835 {0x270f, 0xfc00}, /* Chaintech Digitop DST-1000 DVB-S */
836 {0x7063, 0x2000}, /* pcHDTV HD-2000 TV */
837 };
838
839 static struct pci_driver driver;
840
841 /* return the id of the card, or a negative value if it's blacklisted */
842 static int __devinit snd_bt87x_detect_card(struct pci_dev *pci)
843 {
844 int i;
845 const struct pci_device_id *supported;
846
847 supported = pci_match_id(snd_bt87x_ids, pci);
848 if (supported && supported->driver_data > 0)
849 return supported->driver_data;
850
851 for (i = 0; i < ARRAY_SIZE(blacklist); ++i)
852 if (blacklist[i].subvendor == pci->subsystem_vendor &&
853 blacklist[i].subdevice == pci->subsystem_device) {
854 snd_printdd(KERN_INFO "card %#04x-%#04x:%#04x has no audio\n",
855 pci->device, pci->subsystem_vendor, pci->subsystem_device);
856 return -EBUSY;
857 }
858
859 snd_printk(KERN_INFO "unknown card %#04x-%#04x:%#04x\n",
860 pci->device, pci->subsystem_vendor, pci->subsystem_device);
861 snd_printk(KERN_DEBUG "please mail id, board name, and, "
862 "if it works, the correct digital_rate option to "
863 "<alsa-devel@alsa-project.org>\n");
864 return SND_BT87X_BOARD_UNKNOWN;
865 }
866
867 static int __devinit snd_bt87x_probe(struct pci_dev *pci,
868 const struct pci_device_id *pci_id)
869 {
870 static int dev;
871 struct snd_card *card;
872 struct snd_bt87x *chip;
873 int err;
874 enum snd_bt87x_boardid boardid;
875
876 if (!pci_id->driver_data) {
877 err = snd_bt87x_detect_card(pci);
878 if (err < 0)
879 return -ENODEV;
880 boardid = err;
881 } else
882 boardid = pci_id->driver_data;
883
884 if (dev >= SNDRV_CARDS)
885 return -ENODEV;
886 if (!enable[dev]) {
887 ++dev;
888 return -ENOENT;
889 }
890
891 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
892 if (!card)
893 return -ENOMEM;
894
895 err = snd_bt87x_create(card, pci, &chip);
896 if (err < 0)
897 goto _error;
898
899 memcpy(&chip->board, &snd_bt87x_boards[boardid], sizeof(chip->board));
900
901 if (!chip->board.no_digital) {
902 if (digital_rate[dev] > 0)
903 chip->board.dig_rate = digital_rate[dev];
904
905 chip->reg_control |= chip->board.digital_fmt;
906
907 err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
908 if (err < 0)
909 goto _error;
910 }
911 if (!chip->board.no_analog) {
912 err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
913 if (err < 0)
914 goto _error;
915 err = snd_ctl_add(card, snd_ctl_new1(
916 &snd_bt87x_capture_volume, chip));
917 if (err < 0)
918 goto _error;
919 err = snd_ctl_add(card, snd_ctl_new1(
920 &snd_bt87x_capture_boost, chip));
921 if (err < 0)
922 goto _error;
923 err = snd_ctl_add(card, snd_ctl_new1(
924 &snd_bt87x_capture_source, chip));
925 if (err < 0)
926 goto _error;
927 }
928 snd_printk(KERN_INFO "bt87x%d: Using board %d, %sanalog, %sdigital "
929 "(rate %d Hz)\n", dev, boardid,
930 chip->board.no_analog ? "no " : "",
931 chip->board.no_digital ? "no " : "", chip->board.dig_rate);
932
933 strcpy(card->driver, "Bt87x");
934 sprintf(card->shortname, "Brooktree Bt%x", pci->device);
935 sprintf(card->longname, "%s at %#llx, irq %i",
936 card->shortname, (unsigned long long)pci_resource_start(pci, 0),
937 chip->irq);
938 strcpy(card->mixername, "Bt87x");
939
940 err = snd_card_register(card);
941 if (err < 0)
942 goto _error;
943
944 pci_set_drvdata(pci, card);
945 ++dev;
946 return 0;
947
948 _error:
949 snd_card_free(card);
950 return err;
951 }
952
953 static void __devexit snd_bt87x_remove(struct pci_dev *pci)
954 {
955 snd_card_free(pci_get_drvdata(pci));
956 pci_set_drvdata(pci, NULL);
957 }
958
959 /* default entries for all Bt87x cards - it's not exported */
960 /* driver_data is set to 0 to call detection */
961 static struct pci_device_id snd_bt87x_default_ids[] __devinitdata = {
962 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, PCI_ANY_ID, PCI_ANY_ID, UNKNOWN),
963 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, PCI_ANY_ID, PCI_ANY_ID, UNKNOWN),
964 { }
965 };
966
967 static struct pci_driver driver = {
968 .name = "Bt87x",
969 .id_table = snd_bt87x_ids,
970 .probe = snd_bt87x_probe,
971 .remove = __devexit_p(snd_bt87x_remove),
972 };
973
974 static int __init alsa_card_bt87x_init(void)
975 {
976 if (load_all)
977 driver.id_table = snd_bt87x_default_ids;
978 return pci_register_driver(&driver);
979 }
980
981 static void __exit alsa_card_bt87x_exit(void)
982 {
983 pci_unregister_driver(&driver);
984 }
985
986 module_init(alsa_card_bt87x_init)
987 module_exit(alsa_card_bt87x_exit)
Support for the Chinese Samsung S3C2440 based development boards