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/module.h>
29 #include <linux/bitops.h>
30 #include <linux/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 bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
46 static int digital_rate[SNDRV_CARDS]; /* digital input rate */
47 static bool 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 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
snd_bt87x_readl(struct snd_bt87x * chip,u32 reg)217 static inline u32 snd_bt87x_readl(struct snd_bt87x *chip, u32 reg)
218 {
219 return readl(chip->mmio + reg);
220 }
221
snd_bt87x_writel(struct snd_bt87x * chip,u32 reg,u32 value)222 static inline void snd_bt87x_writel(struct snd_bt87x *chip, u32 reg, u32 value)
223 {
224 writel(value, chip->mmio + reg);
225 }
226
snd_bt87x_create_risc(struct snd_bt87x * chip,struct snd_pcm_substream * substream,unsigned int periods,unsigned int period_bytes)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 unsigned int i, offset;
231 __le32 *risc;
232
233 if (chip->dma_risc.area == NULL) {
234 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
235 PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
236 return -ENOMEM;
237 }
238 risc = (__le32 *)chip->dma_risc.area;
239 offset = 0;
240 *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
241 *risc++ = cpu_to_le32(0);
242 for (i = 0; i < periods; ++i) {
243 u32 rest;
244
245 rest = period_bytes;
246 do {
247 u32 cmd, len;
248 unsigned int addr;
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 addr = snd_pcm_sgbuf_get_addr(substream, offset);
264 *risc++ = cpu_to_le32(addr);
265 offset += len;
266 rest -= len;
267 } while (rest > 0);
268 }
269 *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO);
270 *risc++ = cpu_to_le32(0);
271 *risc++ = cpu_to_le32(RISC_JUMP);
272 *risc++ = cpu_to_le32(chip->dma_risc.addr);
273 chip->line_bytes = period_bytes;
274 chip->lines = periods;
275 return 0;
276 }
277
snd_bt87x_free_risc(struct snd_bt87x * chip)278 static void snd_bt87x_free_risc(struct snd_bt87x *chip)
279 {
280 if (chip->dma_risc.area) {
281 snd_dma_free_pages(&chip->dma_risc);
282 chip->dma_risc.area = NULL;
283 }
284 }
285
snd_bt87x_pci_error(struct snd_bt87x * chip,unsigned int status)286 static void snd_bt87x_pci_error(struct snd_bt87x *chip, unsigned int status)
287 {
288 u16 pci_status;
289
290 pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
291 pci_status &= PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
292 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
293 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY;
294 pci_write_config_word(chip->pci, PCI_STATUS, pci_status);
295 if (pci_status != PCI_STATUS_DETECTED_PARITY)
296 dev_err(chip->card->dev,
297 "Aieee - PCI error! status %#08x, PCI status %#04x\n",
298 status & ERROR_INTERRUPTS, pci_status);
299 else {
300 dev_err(chip->card->dev,
301 "Aieee - PCI parity error detected!\n");
302 /* error 'handling' similar to aic7xxx_pci.c: */
303 chip->pci_parity_errors++;
304 if (chip->pci_parity_errors > 20) {
305 dev_err(chip->card->dev,
306 "Too many PCI parity errors observed.\n");
307 dev_err(chip->card->dev,
308 "Some device on this bus is generating bad parity.\n");
309 dev_err(chip->card->dev,
310 "This is an error *observed by*, not *generated by*, this card.\n");
311 dev_err(chip->card->dev,
312 "PCI parity error checking has been disabled.\n");
313 chip->interrupt_mask &= ~(INT_PPERR | INT_RIPERR);
314 snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
315 }
316 }
317 }
318
snd_bt87x_interrupt(int irq,void * dev_id)319 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id)
320 {
321 struct snd_bt87x *chip = dev_id;
322 unsigned int status, irq_status;
323
324 status = snd_bt87x_readl(chip, REG_INT_STAT);
325 irq_status = status & chip->interrupt_mask;
326 if (!irq_status)
327 return IRQ_NONE;
328 snd_bt87x_writel(chip, REG_INT_STAT, irq_status);
329
330 if (irq_status & ERROR_INTERRUPTS) {
331 if (irq_status & (INT_FBUS | INT_FTRGT))
332 dev_warn(chip->card->dev,
333 "FIFO overrun, status %#08x\n", status);
334 if (irq_status & INT_OCERR)
335 dev_err(chip->card->dev,
336 "internal RISC error, status %#08x\n", status);
337 if (irq_status & (INT_PPERR | INT_RIPERR | INT_PABORT))
338 snd_bt87x_pci_error(chip, irq_status);
339 }
340 if ((irq_status & INT_RISCI) && (chip->reg_control & CTL_ACAP_EN)) {
341 int current_block, irq_block;
342
343 /* assume that exactly one line has been recorded */
344 chip->current_line = (chip->current_line + 1) % chip->lines;
345 /* but check if some interrupts have been skipped */
346 current_block = chip->current_line * 16 / chip->lines;
347 irq_block = status >> INT_RISCS_SHIFT;
348 if (current_block != irq_block)
349 chip->current_line = (irq_block * chip->lines + 15) / 16;
350
351 snd_pcm_period_elapsed(chip->substream);
352 }
353 return IRQ_HANDLED;
354 }
355
356 static const struct snd_pcm_hardware snd_bt87x_digital_hw = {
357 .info = SNDRV_PCM_INFO_MMAP |
358 SNDRV_PCM_INFO_INTERLEAVED |
359 SNDRV_PCM_INFO_BLOCK_TRANSFER |
360 SNDRV_PCM_INFO_MMAP_VALID |
361 SNDRV_PCM_INFO_BATCH,
362 .formats = SNDRV_PCM_FMTBIT_S16_LE,
363 .rates = 0, /* set at runtime */
364 .channels_min = 2,
365 .channels_max = 2,
366 .buffer_bytes_max = 255 * 4092,
367 .period_bytes_min = 32,
368 .period_bytes_max = 4092,
369 .periods_min = 2,
370 .periods_max = 255,
371 };
372
373 static const struct snd_pcm_hardware snd_bt87x_analog_hw = {
374 .info = SNDRV_PCM_INFO_MMAP |
375 SNDRV_PCM_INFO_INTERLEAVED |
376 SNDRV_PCM_INFO_BLOCK_TRANSFER |
377 SNDRV_PCM_INFO_MMAP_VALID |
378 SNDRV_PCM_INFO_BATCH,
379 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
380 .rates = SNDRV_PCM_RATE_KNOT,
381 .rate_min = ANALOG_CLOCK / CLOCK_DIV_MAX,
382 .rate_max = ANALOG_CLOCK / CLOCK_DIV_MIN,
383 .channels_min = 1,
384 .channels_max = 1,
385 .buffer_bytes_max = 255 * 4092,
386 .period_bytes_min = 32,
387 .period_bytes_max = 4092,
388 .periods_min = 2,
389 .periods_max = 255,
390 };
391
snd_bt87x_set_digital_hw(struct snd_bt87x * chip,struct snd_pcm_runtime * runtime)392 static int snd_bt87x_set_digital_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
393 {
394 chip->reg_control |= CTL_DA_IOM_DA | CTL_A_PWRDN;
395 runtime->hw = snd_bt87x_digital_hw;
396 runtime->hw.rates = snd_pcm_rate_to_rate_bit(chip->board.dig_rate);
397 runtime->hw.rate_min = chip->board.dig_rate;
398 runtime->hw.rate_max = chip->board.dig_rate;
399 return 0;
400 }
401
snd_bt87x_set_analog_hw(struct snd_bt87x * chip,struct snd_pcm_runtime * runtime)402 static int snd_bt87x_set_analog_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
403 {
404 static const struct snd_ratnum analog_clock = {
405 .num = ANALOG_CLOCK,
406 .den_min = CLOCK_DIV_MIN,
407 .den_max = CLOCK_DIV_MAX,
408 .den_step = 1
409 };
410 static const struct snd_pcm_hw_constraint_ratnums constraint_rates = {
411 .nrats = 1,
412 .rats = &analog_clock
413 };
414
415 chip->reg_control &= ~(CTL_DA_IOM_DA | CTL_A_PWRDN);
416 runtime->hw = snd_bt87x_analog_hw;
417 return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
418 &constraint_rates);
419 }
420
snd_bt87x_pcm_open(struct snd_pcm_substream * substream)421 static int snd_bt87x_pcm_open(struct snd_pcm_substream *substream)
422 {
423 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
424 struct snd_pcm_runtime *runtime = substream->runtime;
425 int err;
426
427 if (test_and_set_bit(0, &chip->opened))
428 return -EBUSY;
429
430 if (substream->pcm->device == DEVICE_DIGITAL)
431 err = snd_bt87x_set_digital_hw(chip, runtime);
432 else
433 err = snd_bt87x_set_analog_hw(chip, runtime);
434 if (err < 0)
435 goto _error;
436
437 err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
438 if (err < 0)
439 goto _error;
440
441 chip->substream = substream;
442 return 0;
443
444 _error:
445 clear_bit(0, &chip->opened);
446 smp_mb__after_atomic();
447 return err;
448 }
449
snd_bt87x_close(struct snd_pcm_substream * substream)450 static int snd_bt87x_close(struct snd_pcm_substream *substream)
451 {
452 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
453
454 spin_lock_irq(&chip->reg_lock);
455 chip->reg_control |= CTL_A_PWRDN;
456 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
457 spin_unlock_irq(&chip->reg_lock);
458
459 chip->substream = NULL;
460 clear_bit(0, &chip->opened);
461 smp_mb__after_atomic();
462 return 0;
463 }
464
snd_bt87x_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)465 static int snd_bt87x_hw_params(struct snd_pcm_substream *substream,
466 struct snd_pcm_hw_params *hw_params)
467 {
468 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
469 int err;
470
471 err = snd_pcm_lib_malloc_pages(substream,
472 params_buffer_bytes(hw_params));
473 if (err < 0)
474 return err;
475 return snd_bt87x_create_risc(chip, substream,
476 params_periods(hw_params),
477 params_period_bytes(hw_params));
478 }
479
snd_bt87x_hw_free(struct snd_pcm_substream * substream)480 static int snd_bt87x_hw_free(struct snd_pcm_substream *substream)
481 {
482 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
483
484 snd_bt87x_free_risc(chip);
485 snd_pcm_lib_free_pages(substream);
486 return 0;
487 }
488
snd_bt87x_prepare(struct snd_pcm_substream * substream)489 static int snd_bt87x_prepare(struct snd_pcm_substream *substream)
490 {
491 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
492 struct snd_pcm_runtime *runtime = substream->runtime;
493 int decimation;
494
495 spin_lock_irq(&chip->reg_lock);
496 chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
497 decimation = (ANALOG_CLOCK + runtime->rate / 4) / runtime->rate;
498 chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
499 if (runtime->format == SNDRV_PCM_FORMAT_S8)
500 chip->reg_control |= CTL_DA_SBR;
501 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
502 spin_unlock_irq(&chip->reg_lock);
503 return 0;
504 }
505
snd_bt87x_start(struct snd_bt87x * chip)506 static int snd_bt87x_start(struct snd_bt87x *chip)
507 {
508 spin_lock(&chip->reg_lock);
509 chip->current_line = 0;
510 chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
511 snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
512 snd_bt87x_writel(chip, REG_PACKET_LEN,
513 chip->line_bytes | (chip->lines << 16));
514 snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
515 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
516 spin_unlock(&chip->reg_lock);
517 return 0;
518 }
519
snd_bt87x_stop(struct snd_bt87x * chip)520 static int snd_bt87x_stop(struct snd_bt87x *chip)
521 {
522 spin_lock(&chip->reg_lock);
523 chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
524 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
525 snd_bt87x_writel(chip, REG_INT_MASK, 0);
526 snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
527 spin_unlock(&chip->reg_lock);
528 return 0;
529 }
530
snd_bt87x_trigger(struct snd_pcm_substream * substream,int cmd)531 static int snd_bt87x_trigger(struct snd_pcm_substream *substream, int cmd)
532 {
533 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
534
535 switch (cmd) {
536 case SNDRV_PCM_TRIGGER_START:
537 return snd_bt87x_start(chip);
538 case SNDRV_PCM_TRIGGER_STOP:
539 return snd_bt87x_stop(chip);
540 default:
541 return -EINVAL;
542 }
543 }
544
snd_bt87x_pointer(struct snd_pcm_substream * substream)545 static snd_pcm_uframes_t snd_bt87x_pointer(struct snd_pcm_substream *substream)
546 {
547 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
548 struct snd_pcm_runtime *runtime = substream->runtime;
549
550 return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
551 }
552
553 static const struct snd_pcm_ops snd_bt87x_pcm_ops = {
554 .open = snd_bt87x_pcm_open,
555 .close = snd_bt87x_close,
556 .ioctl = snd_pcm_lib_ioctl,
557 .hw_params = snd_bt87x_hw_params,
558 .hw_free = snd_bt87x_hw_free,
559 .prepare = snd_bt87x_prepare,
560 .trigger = snd_bt87x_trigger,
561 .pointer = snd_bt87x_pointer,
562 .page = snd_pcm_sgbuf_ops_page,
563 };
564
snd_bt87x_capture_volume_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * info)565 static int snd_bt87x_capture_volume_info(struct snd_kcontrol *kcontrol,
566 struct snd_ctl_elem_info *info)
567 {
568 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
569 info->count = 1;
570 info->value.integer.min = 0;
571 info->value.integer.max = 15;
572 return 0;
573 }
574
snd_bt87x_capture_volume_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)575 static int snd_bt87x_capture_volume_get(struct snd_kcontrol *kcontrol,
576 struct snd_ctl_elem_value *value)
577 {
578 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
579
580 value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
581 return 0;
582 }
583
snd_bt87x_capture_volume_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)584 static int snd_bt87x_capture_volume_put(struct snd_kcontrol *kcontrol,
585 struct snd_ctl_elem_value *value)
586 {
587 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
588 u32 old_control;
589 int changed;
590
591 spin_lock_irq(&chip->reg_lock);
592 old_control = chip->reg_control;
593 chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
594 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
595 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
596 changed = old_control != chip->reg_control;
597 spin_unlock_irq(&chip->reg_lock);
598 return changed;
599 }
600
601 static const struct snd_kcontrol_new snd_bt87x_capture_volume = {
602 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
603 .name = "Capture Volume",
604 .info = snd_bt87x_capture_volume_info,
605 .get = snd_bt87x_capture_volume_get,
606 .put = snd_bt87x_capture_volume_put,
607 };
608
609 #define snd_bt87x_capture_boost_info snd_ctl_boolean_mono_info
610
snd_bt87x_capture_boost_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)611 static int snd_bt87x_capture_boost_get(struct snd_kcontrol *kcontrol,
612 struct snd_ctl_elem_value *value)
613 {
614 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
615
616 value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
617 return 0;
618 }
619
snd_bt87x_capture_boost_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)620 static int snd_bt87x_capture_boost_put(struct snd_kcontrol *kcontrol,
621 struct snd_ctl_elem_value *value)
622 {
623 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
624 u32 old_control;
625 int changed;
626
627 spin_lock_irq(&chip->reg_lock);
628 old_control = chip->reg_control;
629 chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
630 | (value->value.integer.value[0] ? CTL_A_G2X : 0);
631 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
632 changed = chip->reg_control != old_control;
633 spin_unlock_irq(&chip->reg_lock);
634 return changed;
635 }
636
637 static const struct snd_kcontrol_new snd_bt87x_capture_boost = {
638 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
639 .name = "Capture Boost",
640 .info = snd_bt87x_capture_boost_info,
641 .get = snd_bt87x_capture_boost_get,
642 .put = snd_bt87x_capture_boost_put,
643 };
644
snd_bt87x_capture_source_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * info)645 static int snd_bt87x_capture_source_info(struct snd_kcontrol *kcontrol,
646 struct snd_ctl_elem_info *info)
647 {
648 static const char *const texts[3] = {"TV Tuner", "FM", "Mic/Line"};
649
650 return snd_ctl_enum_info(info, 1, 3, texts);
651 }
652
snd_bt87x_capture_source_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)653 static int snd_bt87x_capture_source_get(struct snd_kcontrol *kcontrol,
654 struct snd_ctl_elem_value *value)
655 {
656 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
657
658 value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
659 return 0;
660 }
661
snd_bt87x_capture_source_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)662 static int snd_bt87x_capture_source_put(struct snd_kcontrol *kcontrol,
663 struct snd_ctl_elem_value *value)
664 {
665 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
666 u32 old_control;
667 int changed;
668
669 spin_lock_irq(&chip->reg_lock);
670 old_control = chip->reg_control;
671 chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
672 | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
673 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
674 changed = chip->reg_control != old_control;
675 spin_unlock_irq(&chip->reg_lock);
676 return changed;
677 }
678
679 static const struct snd_kcontrol_new snd_bt87x_capture_source = {
680 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
681 .name = "Capture Source",
682 .info = snd_bt87x_capture_source_info,
683 .get = snd_bt87x_capture_source_get,
684 .put = snd_bt87x_capture_source_put,
685 };
686
snd_bt87x_free(struct snd_bt87x * chip)687 static int snd_bt87x_free(struct snd_bt87x *chip)
688 {
689 if (chip->mmio)
690 snd_bt87x_stop(chip);
691 if (chip->irq >= 0)
692 free_irq(chip->irq, chip);
693 iounmap(chip->mmio);
694 pci_release_regions(chip->pci);
695 pci_disable_device(chip->pci);
696 kfree(chip);
697 return 0;
698 }
699
snd_bt87x_dev_free(struct snd_device * device)700 static int snd_bt87x_dev_free(struct snd_device *device)
701 {
702 struct snd_bt87x *chip = device->device_data;
703 return snd_bt87x_free(chip);
704 }
705
snd_bt87x_pcm(struct snd_bt87x * chip,int device,char * name)706 static int snd_bt87x_pcm(struct snd_bt87x *chip, int device, char *name)
707 {
708 int err;
709 struct snd_pcm *pcm;
710
711 err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
712 if (err < 0)
713 return err;
714 pcm->private_data = chip;
715 strcpy(pcm->name, name);
716 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
717 return snd_pcm_lib_preallocate_pages_for_all(pcm,
718 SNDRV_DMA_TYPE_DEV_SG,
719 snd_dma_pci_data(chip->pci),
720 128 * 1024,
721 ALIGN(255 * 4092, 1024));
722 }
723
snd_bt87x_create(struct snd_card * card,struct pci_dev * pci,struct snd_bt87x ** rchip)724 static int snd_bt87x_create(struct snd_card *card,
725 struct pci_dev *pci,
726 struct snd_bt87x **rchip)
727 {
728 struct snd_bt87x *chip;
729 int err;
730 static struct snd_device_ops ops = {
731 .dev_free = snd_bt87x_dev_free
732 };
733
734 *rchip = NULL;
735
736 err = pci_enable_device(pci);
737 if (err < 0)
738 return err;
739
740 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
741 if (!chip) {
742 pci_disable_device(pci);
743 return -ENOMEM;
744 }
745 chip->card = card;
746 chip->pci = pci;
747 chip->irq = -1;
748 spin_lock_init(&chip->reg_lock);
749
750 if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) {
751 kfree(chip);
752 pci_disable_device(pci);
753 return err;
754 }
755 chip->mmio = pci_ioremap_bar(pci, 0);
756 if (!chip->mmio) {
757 dev_err(card->dev, "cannot remap io memory\n");
758 err = -ENOMEM;
759 goto fail;
760 }
761
762 chip->reg_control = CTL_A_PWRDN | CTL_DA_ES2 |
763 CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
764 chip->interrupt_mask = MY_INTERRUPTS;
765 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
766 snd_bt87x_writel(chip, REG_INT_MASK, 0);
767 snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
768
769 err = request_irq(pci->irq, snd_bt87x_interrupt, IRQF_SHARED,
770 KBUILD_MODNAME, chip);
771 if (err < 0) {
772 dev_err(card->dev, "cannot grab irq %d\n", pci->irq);
773 goto fail;
774 }
775 chip->irq = pci->irq;
776 pci_set_master(pci);
777 synchronize_irq(chip->irq);
778
779 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
780 if (err < 0)
781 goto fail;
782
783 *rchip = chip;
784 return 0;
785
786 fail:
787 snd_bt87x_free(chip);
788 return err;
789 }
790
791 #define BT_DEVICE(chip, subvend, subdev, id) \
792 { .vendor = PCI_VENDOR_ID_BROOKTREE, \
793 .device = chip, \
794 .subvendor = subvend, .subdevice = subdev, \
795 .driver_data = SND_BT87X_BOARD_ ## id }
796 /* driver_data is the card id for that device */
797
798 static const struct pci_device_id snd_bt87x_ids[] = {
799 /* Hauppauge WinTV series */
800 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0x13eb, GENERIC),
801 /* Hauppauge WinTV series */
802 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, 0x0070, 0x13eb, GENERIC),
803 /* Viewcast Osprey 200 */
804 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff01, OSPREY2x0),
805 /* Viewcast Osprey 440 (rate is configurable via gpio) */
806 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff07, OSPREY440),
807 /* ATI TV-Wonder */
808 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1002, 0x0001, GENERIC),
809 /* Leadtek Winfast tv 2000xp delux */
810 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x107d, 0x6606, GENERIC),
811 /* Pinnacle PCTV */
812 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x11bd, 0x0012, GENERIC),
813 /* Voodoo TV 200 */
814 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x121a, 0x3000, GENERIC),
815 /* Askey Computer Corp. MagicTView'99 */
816 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x144f, 0x3000, GENERIC),
817 /* AVerMedia Studio No. 103, 203, ...? */
818 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1461, 0x0003, AVPHONE98),
819 /* Prolink PixelView PV-M4900 */
820 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1554, 0x4011, GENERIC),
821 /* Pinnacle Studio PCTV rave */
822 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0xbd11, 0x1200, GENERIC),
823 { }
824 };
825 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
826
827 /* cards known not to have audio
828 * (DVB cards use the audio function to transfer MPEG data) */
829 static struct {
830 unsigned short subvendor, subdevice;
831 } blacklist[] = {
832 {0x0071, 0x0101}, /* Nebula Electronics DigiTV */
833 {0x11bd, 0x001c}, /* Pinnacle PCTV Sat */
834 {0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */
835 {0x1461, 0x0761}, /* AVermedia AverTV DVB-T */
836 {0x1461, 0x0771}, /* AVermedia DVB-T 771 */
837 {0x1822, 0x0001}, /* Twinhan VisionPlus DVB-T */
838 {0x18ac, 0xd500}, /* DVICO FusionHDTV 5 Lite */
839 {0x18ac, 0xdb10}, /* DVICO FusionHDTV DVB-T Lite */
840 {0x18ac, 0xdb11}, /* Ultraview DVB-T Lite */
841 {0x270f, 0xfc00}, /* Chaintech Digitop DST-1000 DVB-S */
842 {0x7063, 0x2000}, /* pcHDTV HD-2000 TV */
843 };
844
845 static struct pci_driver driver;
846
847 /* return the id of the card, or a negative value if it's blacklisted */
snd_bt87x_detect_card(struct pci_dev * pci)848 static int snd_bt87x_detect_card(struct pci_dev *pci)
849 {
850 int i;
851 const struct pci_device_id *supported;
852
853 supported = pci_match_id(snd_bt87x_ids, pci);
854 if (supported && supported->driver_data > 0)
855 return supported->driver_data;
856
857 for (i = 0; i < ARRAY_SIZE(blacklist); ++i)
858 if (blacklist[i].subvendor == pci->subsystem_vendor &&
859 blacklist[i].subdevice == pci->subsystem_device) {
860 dev_dbg(&pci->dev,
861 "card %#04x-%#04x:%#04x has no audio\n",
862 pci->device, pci->subsystem_vendor, pci->subsystem_device);
863 return -EBUSY;
864 }
865
866 dev_info(&pci->dev, "unknown card %#04x-%#04x:%#04x\n",
867 pci->device, pci->subsystem_vendor, pci->subsystem_device);
868 dev_info(&pci->dev, "please mail id, board name, and, "
869 "if it works, the correct digital_rate option to "
870 "<alsa-devel@alsa-project.org>\n");
871 return SND_BT87X_BOARD_UNKNOWN;
872 }
873
snd_bt87x_probe(struct pci_dev * pci,const struct pci_device_id * pci_id)874 static int snd_bt87x_probe(struct pci_dev *pci,
875 const struct pci_device_id *pci_id)
876 {
877 static int dev;
878 struct snd_card *card;
879 struct snd_bt87x *chip;
880 int err;
881 enum snd_bt87x_boardid boardid;
882
883 if (!pci_id->driver_data) {
884 err = snd_bt87x_detect_card(pci);
885 if (err < 0)
886 return -ENODEV;
887 boardid = err;
888 } else
889 boardid = pci_id->driver_data;
890
891 if (dev >= SNDRV_CARDS)
892 return -ENODEV;
893 if (!enable[dev]) {
894 ++dev;
895 return -ENOENT;
896 }
897
898 err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
899 0, &card);
900 if (err < 0)
901 return err;
902
903 err = snd_bt87x_create(card, pci, &chip);
904 if (err < 0)
905 goto _error;
906
907 memcpy(&chip->board, &snd_bt87x_boards[boardid], sizeof(chip->board));
908
909 if (!chip->board.no_digital) {
910 if (digital_rate[dev] > 0)
911 chip->board.dig_rate = digital_rate[dev];
912
913 chip->reg_control |= chip->board.digital_fmt;
914
915 err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
916 if (err < 0)
917 goto _error;
918 }
919 if (!chip->board.no_analog) {
920 err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
921 if (err < 0)
922 goto _error;
923 err = snd_ctl_add(card, snd_ctl_new1(
924 &snd_bt87x_capture_volume, chip));
925 if (err < 0)
926 goto _error;
927 err = snd_ctl_add(card, snd_ctl_new1(
928 &snd_bt87x_capture_boost, chip));
929 if (err < 0)
930 goto _error;
931 err = snd_ctl_add(card, snd_ctl_new1(
932 &snd_bt87x_capture_source, chip));
933 if (err < 0)
934 goto _error;
935 }
936 dev_info(card->dev, "bt87x%d: Using board %d, %sanalog, %sdigital "
937 "(rate %d Hz)\n", dev, boardid,
938 chip->board.no_analog ? "no " : "",
939 chip->board.no_digital ? "no " : "", chip->board.dig_rate);
940
941 strcpy(card->driver, "Bt87x");
942 sprintf(card->shortname, "Brooktree Bt%x", pci->device);
943 sprintf(card->longname, "%s at %#llx, irq %i",
944 card->shortname, (unsigned long long)pci_resource_start(pci, 0),
945 chip->irq);
946 strcpy(card->mixername, "Bt87x");
947
948 err = snd_card_register(card);
949 if (err < 0)
950 goto _error;
951
952 pci_set_drvdata(pci, card);
953 ++dev;
954 return 0;
955
956 _error:
957 snd_card_free(card);
958 return err;
959 }
960
snd_bt87x_remove(struct pci_dev * pci)961 static void snd_bt87x_remove(struct pci_dev *pci)
962 {
963 snd_card_free(pci_get_drvdata(pci));
964 }
965
966 /* default entries for all Bt87x cards - it's not exported */
967 /* driver_data is set to 0 to call detection */
968 static const struct pci_device_id snd_bt87x_default_ids[] = {
969 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, PCI_ANY_ID, PCI_ANY_ID, UNKNOWN),
970 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, PCI_ANY_ID, PCI_ANY_ID, UNKNOWN),
971 { }
972 };
973
974 static struct pci_driver driver = {
975 .name = KBUILD_MODNAME,
976 .id_table = snd_bt87x_ids,
977 .probe = snd_bt87x_probe,
978 .remove = snd_bt87x_remove,
979 };
980
alsa_card_bt87x_init(void)981 static int __init alsa_card_bt87x_init(void)
982 {
983 if (load_all)
984 driver.id_table = snd_bt87x_default_ids;
985 return pci_register_driver(&driver);
986 }
987
alsa_card_bt87x_exit(void)988 static void __exit alsa_card_bt87x_exit(void)
989 {
990 pci_unregister_driver(&driver);
991 }
992
993 module_init(alsa_card_bt87x_init)
994 module_exit(alsa_card_bt87x_exit)
995
