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interconnect: qcom: sdm845: Walk the list safely on node removal
[linux/fpc-iii.git] / sound / pci / bt87x.c
blob6bf5ac3600c5422cb2578b07ff447d965b5b30a5
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * bt87x.c - Brooktree Bt878/Bt879 driver for ALSA
4 *
5 * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
6 *
7 * based on btaudio.c by Gerd Knorr <kraxel@bytesex.org>
8 */
9
10 #include <linux/init.h>
11 #include <linux/interrupt.h>
12 #include <linux/pci.h>
13 #include <linux/slab.h>
14 #include <linux/module.h>
15 #include <linux/bitops.h>
16 #include <linux/io.h>
17 #include <sound/core.h>
18 #include <sound/pcm.h>
19 #include <sound/pcm_params.h>
20 #include <sound/control.h>
21 #include <sound/initval.h>
22
23 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
24 MODULE_DESCRIPTION("Brooktree Bt87x audio driver");
25 MODULE_LICENSE("GPL");
26 MODULE_SUPPORTED_DEVICE("{{Brooktree,Bt878},"
27 "{Brooktree,Bt879}}");
28
29 static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */
30 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
31 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
32 static int digital_rate[SNDRV_CARDS]; /* digital input rate */
33 static bool load_all; /* allow to load the non-whitelisted cards */
34
35 module_param_array(index, int, NULL, 0444);
36 MODULE_PARM_DESC(index, "Index value for Bt87x soundcard");
37 module_param_array(id, charp, NULL, 0444);
38 MODULE_PARM_DESC(id, "ID string for Bt87x soundcard");
39 module_param_array(enable, bool, NULL, 0444);
40 MODULE_PARM_DESC(enable, "Enable Bt87x soundcard");
41 module_param_array(digital_rate, int, NULL, 0444);
42 MODULE_PARM_DESC(digital_rate, "Digital input rate for Bt87x soundcard");
43 module_param(load_all, bool, 0444);
44 MODULE_PARM_DESC(load_all, "Allow to load the non-whitelisted cards");
45
46
47 /* register offsets */
48 #define REG_INT_STAT 0x100 /* interrupt status */
49 #define REG_INT_MASK 0x104 /* interrupt mask */
50 #define REG_GPIO_DMA_CTL 0x10c /* audio control */
51 #define REG_PACKET_LEN 0x110 /* audio packet lengths */
52 #define REG_RISC_STRT_ADD 0x114 /* RISC program start address */
53 #define REG_RISC_COUNT 0x120 /* RISC program counter */
54
55 /* interrupt bits */
56 #define INT_OFLOW (1 << 3) /* audio A/D overflow */
57 #define INT_RISCI (1 << 11) /* RISC instruction IRQ bit set */
58 #define INT_FBUS (1 << 12) /* FIFO overrun due to bus access latency */
59 #define INT_FTRGT (1 << 13) /* FIFO overrun due to target latency */
60 #define INT_FDSR (1 << 14) /* FIFO data stream resynchronization */
61 #define INT_PPERR (1 << 15) /* PCI parity error */
62 #define INT_RIPERR (1 << 16) /* RISC instruction parity error */
63 #define INT_PABORT (1 << 17) /* PCI master or target abort */
64 #define INT_OCERR (1 << 18) /* invalid opcode */
65 #define INT_SCERR (1 << 19) /* sync counter overflow */
66 #define INT_RISC_EN (1 << 27) /* DMA controller running */
67 #define INT_RISCS_SHIFT 28 /* RISC status bits */
68
69 /* audio control bits */
70 #define CTL_FIFO_ENABLE (1 << 0) /* enable audio data FIFO */
71 #define CTL_RISC_ENABLE (1 << 1) /* enable audio DMA controller */
72 #define CTL_PKTP_4 (0 << 2) /* packet mode FIFO trigger point - 4 DWORDs */
73 #define CTL_PKTP_8 (1 << 2) /* 8 DWORDs */
74 #define CTL_PKTP_16 (2 << 2) /* 16 DWORDs */
75 #define CTL_ACAP_EN (1 << 4) /* enable audio capture */
76 #define CTL_DA_APP (1 << 5) /* GPIO input */
77 #define CTL_DA_IOM_AFE (0 << 6) /* audio A/D input */
78 #define CTL_DA_IOM_DA (1 << 6) /* digital audio input */
79 #define CTL_DA_SDR_SHIFT 8 /* DDF first stage decimation rate */
80 #define CTL_DA_SDR_MASK (0xf<< 8)
81 #define CTL_DA_LMT (1 << 12) /* limit audio data values */
82 #define CTL_DA_ES2 (1 << 13) /* enable DDF stage 2 */
83 #define CTL_DA_SBR (1 << 14) /* samples rounded to 8 bits */
84 #define CTL_DA_DPM (1 << 15) /* data packet mode */
85 #define CTL_DA_LRD_SHIFT 16 /* ALRCK delay */
86 #define CTL_DA_MLB (1 << 21) /* MSB/LSB format */
87 #define CTL_DA_LRI (1 << 22) /* left/right indication */
88 #define CTL_DA_SCE (1 << 23) /* sample clock edge */
89 #define CTL_A_SEL_STV (0 << 24) /* TV tuner audio input */
90 #define CTL_A_SEL_SFM (1 << 24) /* FM audio input */
91 #define CTL_A_SEL_SML (2 << 24) /* mic/line audio input */
92 #define CTL_A_SEL_SMXC (3 << 24) /* MUX bypass */
93 #define CTL_A_SEL_SHIFT 24
94 #define CTL_A_SEL_MASK (3 << 24)
95 #define CTL_A_PWRDN (1 << 26) /* analog audio power-down */
96 #define CTL_A_G2X (1 << 27) /* audio gain boost */
97 #define CTL_A_GAIN_SHIFT 28 /* audio input gain */
98 #define CTL_A_GAIN_MASK (0xf<<28)
99
100 /* RISC instruction opcodes */
101 #define RISC_WRITE (0x1 << 28) /* write FIFO data to memory at address */
102 #define RISC_WRITEC (0x5 << 28) /* write FIFO data to memory at current address */
103 #define RISC_SKIP (0x2 << 28) /* skip FIFO data */
104 #define RISC_JUMP (0x7 << 28) /* jump to address */
105 #define RISC_SYNC (0x8 << 28) /* synchronize with FIFO */
106
107 /* RISC instruction bits */
108 #define RISC_BYTES_ENABLE (0xf << 12) /* byte enable bits */
109 #define RISC_RESYNC ( 1 << 15) /* disable FDSR errors */
110 #define RISC_SET_STATUS_SHIFT 16 /* set status bits */
111 #define RISC_RESET_STATUS_SHIFT 20 /* clear status bits */
112 #define RISC_IRQ ( 1 << 24) /* interrupt */
113 #define RISC_EOL ( 1 << 26) /* end of line */
114 #define RISC_SOL ( 1 << 27) /* start of line */
115
116 /* SYNC status bits values */
117 #define RISC_SYNC_FM1 0x6
118 #define RISC_SYNC_VRO 0xc
119
120 #define ANALOG_CLOCK 1792000
121 #ifdef CONFIG_SND_BT87X_OVERCLOCK
122 #define CLOCK_DIV_MIN 1
123 #else
124 #define CLOCK_DIV_MIN 4
125 #endif
126 #define CLOCK_DIV_MAX 15
127
128 #define ERROR_INTERRUPTS (INT_FBUS | INT_FTRGT | INT_PPERR | \
129 INT_RIPERR | INT_PABORT | INT_OCERR)
130 #define MY_INTERRUPTS (INT_RISCI | ERROR_INTERRUPTS)
131
132 /* SYNC, one WRITE per line, one extra WRITE per page boundary, SYNC, JUMP */
133 #define MAX_RISC_SIZE ((1 + 255 + (PAGE_ALIGN(255 * 4092) / PAGE_SIZE - 1) + 1 + 1) * 8)
134
135 /* Cards with configuration information */
136 enum snd_bt87x_boardid {
137 SND_BT87X_BOARD_UNKNOWN,
138 SND_BT87X_BOARD_GENERIC, /* both an & dig interfaces, 32kHz */
139 SND_BT87X_BOARD_ANALOG, /* board with no external A/D */
140 SND_BT87X_BOARD_OSPREY2x0,
141 SND_BT87X_BOARD_OSPREY440,
142 SND_BT87X_BOARD_AVPHONE98,
143 };
144
145 /* Card configuration */
146 struct snd_bt87x_board {
147 int dig_rate; /* Digital input sampling rate */
148 u32 digital_fmt; /* Register settings for digital input */
149 unsigned no_analog:1; /* No analog input */
150 unsigned no_digital:1; /* No digital input */
151 };
152
153 static struct snd_bt87x_board snd_bt87x_boards[] = {
154 [SND_BT87X_BOARD_UNKNOWN] = {
155 .dig_rate = 32000, /* just a guess */
156 },
157 [SND_BT87X_BOARD_GENERIC] = {
158 .dig_rate = 32000,
159 },
160 [SND_BT87X_BOARD_ANALOG] = {
161 .no_digital = 1,
162 },
163 [SND_BT87X_BOARD_OSPREY2x0] = {
164 .dig_rate = 44100,
165 .digital_fmt = CTL_DA_LRI | (1 << CTL_DA_LRD_SHIFT),
166 },
167 [SND_BT87X_BOARD_OSPREY440] = {
168 .dig_rate = 32000,
169 .digital_fmt = CTL_DA_LRI | (1 << CTL_DA_LRD_SHIFT),
170 .no_analog = 1,
171 },
172 [SND_BT87X_BOARD_AVPHONE98] = {
173 .dig_rate = 48000,
174 },
175 };
176
177 struct snd_bt87x {
178 struct snd_card *card;
179 struct pci_dev *pci;
180 struct snd_bt87x_board board;
181
182 void __iomem *mmio;
183 int irq;
184
185 spinlock_t reg_lock;
186 unsigned long opened;
187 struct snd_pcm_substream *substream;
188
189 struct snd_dma_buffer dma_risc;
190 unsigned int line_bytes;
191 unsigned int lines;
192
193 u32 reg_control;
194 u32 interrupt_mask;
195
196 int current_line;
197
198 int pci_parity_errors;
199 };
200
201 enum { DEVICE_DIGITAL, DEVICE_ANALOG };
202
203 static inline u32 snd_bt87x_readl(struct snd_bt87x *chip, u32 reg)
204 {
205 return readl(chip->mmio + reg);
206 }
207
208 static inline void snd_bt87x_writel(struct snd_bt87x *chip, u32 reg, u32 value)
209 {
210 writel(value, chip->mmio + reg);
211 }
212
213 static int snd_bt87x_create_risc(struct snd_bt87x *chip, struct snd_pcm_substream *substream,
214 unsigned int periods, unsigned int period_bytes)
215 {
216 unsigned int i, offset;
217 __le32 *risc;
218
219 if (chip->dma_risc.area == NULL) {
220 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
221 PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
222 return -ENOMEM;
223 }
224 risc = (__le32 *)chip->dma_risc.area;
225 offset = 0;
226 *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
227 *risc++ = cpu_to_le32(0);
228 for (i = 0; i < periods; ++i) {
229 u32 rest;
230
231 rest = period_bytes;
232 do {
233 u32 cmd, len;
234 unsigned int addr;
235
236 len = PAGE_SIZE - (offset % PAGE_SIZE);
237 if (len > rest)
238 len = rest;
239 cmd = RISC_WRITE | len;
240 if (rest == period_bytes) {
241 u32 block = i * 16 / periods;
242 cmd |= RISC_SOL;
243 cmd |= block << RISC_SET_STATUS_SHIFT;
244 cmd |= (~block & 0xf) << RISC_RESET_STATUS_SHIFT;
245 }
246 if (len == rest)
247 cmd |= RISC_EOL | RISC_IRQ;
248 *risc++ = cpu_to_le32(cmd);
249 addr = snd_pcm_sgbuf_get_addr(substream, offset);
250 *risc++ = cpu_to_le32(addr);
251 offset += len;
252 rest -= len;
253 } while (rest > 0);
254 }
255 *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO);
256 *risc++ = cpu_to_le32(0);
257 *risc++ = cpu_to_le32(RISC_JUMP);
258 *risc++ = cpu_to_le32(chip->dma_risc.addr);
259 chip->line_bytes = period_bytes;
260 chip->lines = periods;
261 return 0;
262 }
263
264 static void snd_bt87x_free_risc(struct snd_bt87x *chip)
265 {
266 if (chip->dma_risc.area) {
267 snd_dma_free_pages(&chip->dma_risc);
268 chip->dma_risc.area = NULL;
269 }
270 }
271
272 static void snd_bt87x_pci_error(struct snd_bt87x *chip, unsigned int status)
273 {
274 u16 pci_status;
275
276 pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
277 pci_status &= PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
278 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
279 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY;
280 pci_write_config_word(chip->pci, PCI_STATUS, pci_status);
281 if (pci_status != PCI_STATUS_DETECTED_PARITY)
282 dev_err(chip->card->dev,
283 "Aieee - PCI error! status %#08x, PCI status %#04x\n",
284 status & ERROR_INTERRUPTS, pci_status);
285 else {
286 dev_err(chip->card->dev,
287 "Aieee - PCI parity error detected!\n");
288 /* error 'handling' similar to aic7xxx_pci.c: */
289 chip->pci_parity_errors++;
290 if (chip->pci_parity_errors > 20) {
291 dev_err(chip->card->dev,
292 "Too many PCI parity errors observed.\n");
293 dev_err(chip->card->dev,
294 "Some device on this bus is generating bad parity.\n");
295 dev_err(chip->card->dev,
296 "This is an error *observed by*, not *generated by*, this card.\n");
297 dev_err(chip->card->dev,
298 "PCI parity error checking has been disabled.\n");
299 chip->interrupt_mask &= ~(INT_PPERR | INT_RIPERR);
300 snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
301 }
302 }
303 }
304
305 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id)
306 {
307 struct snd_bt87x *chip = dev_id;
308 unsigned int status, irq_status;
309
310 status = snd_bt87x_readl(chip, REG_INT_STAT);
311 irq_status = status & chip->interrupt_mask;
312 if (!irq_status)
313 return IRQ_NONE;
314 snd_bt87x_writel(chip, REG_INT_STAT, irq_status);
315
316 if (irq_status & ERROR_INTERRUPTS) {
317 if (irq_status & (INT_FBUS | INT_FTRGT))
318 dev_warn(chip->card->dev,
319 "FIFO overrun, status %#08x\n", status);
320 if (irq_status & INT_OCERR)
321 dev_err(chip->card->dev,
322 "internal RISC error, status %#08x\n", status);
323 if (irq_status & (INT_PPERR | INT_RIPERR | INT_PABORT))
324 snd_bt87x_pci_error(chip, irq_status);
325 }
326 if ((irq_status & INT_RISCI) && (chip->reg_control & CTL_ACAP_EN)) {
327 int current_block, irq_block;
328
329 /* assume that exactly one line has been recorded */
330 chip->current_line = (chip->current_line + 1) % chip->lines;
331 /* but check if some interrupts have been skipped */
332 current_block = chip->current_line * 16 / chip->lines;
333 irq_block = status >> INT_RISCS_SHIFT;
334 if (current_block != irq_block)
335 chip->current_line = (irq_block * chip->lines + 15) / 16;
336
337 snd_pcm_period_elapsed(chip->substream);
338 }
339 return IRQ_HANDLED;
340 }
341
342 static const struct snd_pcm_hardware snd_bt87x_digital_hw = {
343 .info = SNDRV_PCM_INFO_MMAP |
344 SNDRV_PCM_INFO_INTERLEAVED |
345 SNDRV_PCM_INFO_BLOCK_TRANSFER |
346 SNDRV_PCM_INFO_MMAP_VALID |
347 SNDRV_PCM_INFO_BATCH,
348 .formats = SNDRV_PCM_FMTBIT_S16_LE,
349 .rates = 0, /* set at runtime */
350 .channels_min = 2,
351 .channels_max = 2,
352 .buffer_bytes_max = 255 * 4092,
353 .period_bytes_min = 32,
354 .period_bytes_max = 4092,
355 .periods_min = 2,
356 .periods_max = 255,
357 };
358
359 static const struct snd_pcm_hardware snd_bt87x_analog_hw = {
360 .info = SNDRV_PCM_INFO_MMAP |
361 SNDRV_PCM_INFO_INTERLEAVED |
362 SNDRV_PCM_INFO_BLOCK_TRANSFER |
363 SNDRV_PCM_INFO_MMAP_VALID |
364 SNDRV_PCM_INFO_BATCH,
365 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
366 .rates = SNDRV_PCM_RATE_KNOT,
367 .rate_min = ANALOG_CLOCK / CLOCK_DIV_MAX,
368 .rate_max = ANALOG_CLOCK / CLOCK_DIV_MIN,
369 .channels_min = 1,
370 .channels_max = 1,
371 .buffer_bytes_max = 255 * 4092,
372 .period_bytes_min = 32,
373 .period_bytes_max = 4092,
374 .periods_min = 2,
375 .periods_max = 255,
376 };
377
378 static int snd_bt87x_set_digital_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
379 {
380 chip->reg_control |= CTL_DA_IOM_DA | CTL_A_PWRDN;
381 runtime->hw = snd_bt87x_digital_hw;
382 runtime->hw.rates = snd_pcm_rate_to_rate_bit(chip->board.dig_rate);
383 runtime->hw.rate_min = chip->board.dig_rate;
384 runtime->hw.rate_max = chip->board.dig_rate;
385 return 0;
386 }
387
388 static int snd_bt87x_set_analog_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
389 {
390 static const struct snd_ratnum analog_clock = {
391 .num = ANALOG_CLOCK,
392 .den_min = CLOCK_DIV_MIN,
393 .den_max = CLOCK_DIV_MAX,
394 .den_step = 1
395 };
396 static const struct snd_pcm_hw_constraint_ratnums constraint_rates = {
397 .nrats = 1,
398 .rats = &analog_clock
399 };
400
401 chip->reg_control &= ~(CTL_DA_IOM_DA | CTL_A_PWRDN);
402 runtime->hw = snd_bt87x_analog_hw;
403 return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
404 &constraint_rates);
405 }
406
407 static int snd_bt87x_pcm_open(struct snd_pcm_substream *substream)
408 {
409 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
410 struct snd_pcm_runtime *runtime = substream->runtime;
411 int err;
412
413 if (test_and_set_bit(0, &chip->opened))
414 return -EBUSY;
415
416 if (substream->pcm->device == DEVICE_DIGITAL)
417 err = snd_bt87x_set_digital_hw(chip, runtime);
418 else
419 err = snd_bt87x_set_analog_hw(chip, runtime);
420 if (err < 0)
421 goto _error;
422
423 err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
424 if (err < 0)
425 goto _error;
426
427 chip->substream = substream;
428 return 0;
429
430 _error:
431 clear_bit(0, &chip->opened);
432 smp_mb__after_atomic();
433 return err;
434 }
435
436 static int snd_bt87x_close(struct snd_pcm_substream *substream)
437 {
438 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
439
440 spin_lock_irq(&chip->reg_lock);
441 chip->reg_control |= CTL_A_PWRDN;
442 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
443 spin_unlock_irq(&chip->reg_lock);
444
445 chip->substream = NULL;
446 clear_bit(0, &chip->opened);
447 smp_mb__after_atomic();
448 return 0;
449 }
450
451 static int snd_bt87x_hw_params(struct snd_pcm_substream *substream,
452 struct snd_pcm_hw_params *hw_params)
453 {
454 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
455 int err;
456
457 err = snd_pcm_lib_malloc_pages(substream,
458 params_buffer_bytes(hw_params));
459 if (err < 0)
460 return err;
461 return snd_bt87x_create_risc(chip, substream,
462 params_periods(hw_params),
463 params_period_bytes(hw_params));
464 }
465
466 static int snd_bt87x_hw_free(struct snd_pcm_substream *substream)
467 {
468 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
469
470 snd_bt87x_free_risc(chip);
471 snd_pcm_lib_free_pages(substream);
472 return 0;
473 }
474
475 static int snd_bt87x_prepare(struct snd_pcm_substream *substream)
476 {
477 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
478 struct snd_pcm_runtime *runtime = substream->runtime;
479 int decimation;
480
481 spin_lock_irq(&chip->reg_lock);
482 chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
483 decimation = (ANALOG_CLOCK + runtime->rate / 4) / runtime->rate;
484 chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
485 if (runtime->format == SNDRV_PCM_FORMAT_S8)
486 chip->reg_control |= CTL_DA_SBR;
487 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
488 spin_unlock_irq(&chip->reg_lock);
489 return 0;
490 }
491
492 static int snd_bt87x_start(struct snd_bt87x *chip)
493 {
494 spin_lock(&chip->reg_lock);
495 chip->current_line = 0;
496 chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
497 snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
498 snd_bt87x_writel(chip, REG_PACKET_LEN,
499 chip->line_bytes | (chip->lines << 16));
500 snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
501 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
502 spin_unlock(&chip->reg_lock);
503 return 0;
504 }
505
506 static int snd_bt87x_stop(struct snd_bt87x *chip)
507 {
508 spin_lock(&chip->reg_lock);
509 chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
510 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
511 snd_bt87x_writel(chip, REG_INT_MASK, 0);
512 snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
513 spin_unlock(&chip->reg_lock);
514 return 0;
515 }
516
517 static int snd_bt87x_trigger(struct snd_pcm_substream *substream, int cmd)
518 {
519 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
520
521 switch (cmd) {
522 case SNDRV_PCM_TRIGGER_START:
523 return snd_bt87x_start(chip);
524 case SNDRV_PCM_TRIGGER_STOP:
525 return snd_bt87x_stop(chip);
526 default:
527 return -EINVAL;
528 }
529 }
530
531 static snd_pcm_uframes_t snd_bt87x_pointer(struct snd_pcm_substream *substream)
532 {
533 struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
534 struct snd_pcm_runtime *runtime = substream->runtime;
535
536 return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
537 }
538
539 static const struct snd_pcm_ops snd_bt87x_pcm_ops = {
540 .open = snd_bt87x_pcm_open,
541 .close = snd_bt87x_close,
542 .ioctl = snd_pcm_lib_ioctl,
543 .hw_params = snd_bt87x_hw_params,
544 .hw_free = snd_bt87x_hw_free,
545 .prepare = snd_bt87x_prepare,
546 .trigger = snd_bt87x_trigger,
547 .pointer = snd_bt87x_pointer,
548 };
549
550 static int snd_bt87x_capture_volume_info(struct snd_kcontrol *kcontrol,
551 struct snd_ctl_elem_info *info)
552 {
553 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
554 info->count = 1;
555 info->value.integer.min = 0;
556 info->value.integer.max = 15;
557 return 0;
558 }
559
560 static int snd_bt87x_capture_volume_get(struct snd_kcontrol *kcontrol,
561 struct snd_ctl_elem_value *value)
562 {
563 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
564
565 value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
566 return 0;
567 }
568
569 static int snd_bt87x_capture_volume_put(struct snd_kcontrol *kcontrol,
570 struct snd_ctl_elem_value *value)
571 {
572 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
573 u32 old_control;
574 int changed;
575
576 spin_lock_irq(&chip->reg_lock);
577 old_control = chip->reg_control;
578 chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
579 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
580 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
581 changed = old_control != chip->reg_control;
582 spin_unlock_irq(&chip->reg_lock);
583 return changed;
584 }
585
586 static const struct snd_kcontrol_new snd_bt87x_capture_volume = {
587 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
588 .name = "Capture Volume",
589 .info = snd_bt87x_capture_volume_info,
590 .get = snd_bt87x_capture_volume_get,
591 .put = snd_bt87x_capture_volume_put,
592 };
593
594 #define snd_bt87x_capture_boost_info snd_ctl_boolean_mono_info
595
596 static int snd_bt87x_capture_boost_get(struct snd_kcontrol *kcontrol,
597 struct snd_ctl_elem_value *value)
598 {
599 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
600
601 value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
602 return 0;
603 }
604
605 static int snd_bt87x_capture_boost_put(struct snd_kcontrol *kcontrol,
606 struct snd_ctl_elem_value *value)
607 {
608 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
609 u32 old_control;
610 int changed;
611
612 spin_lock_irq(&chip->reg_lock);
613 old_control = chip->reg_control;
614 chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
615 | (value->value.integer.value[0] ? CTL_A_G2X : 0);
616 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
617 changed = chip->reg_control != old_control;
618 spin_unlock_irq(&chip->reg_lock);
619 return changed;
620 }
621
622 static const struct snd_kcontrol_new snd_bt87x_capture_boost = {
623 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
624 .name = "Capture Boost",
625 .info = snd_bt87x_capture_boost_info,
626 .get = snd_bt87x_capture_boost_get,
627 .put = snd_bt87x_capture_boost_put,
628 };
629
630 static int snd_bt87x_capture_source_info(struct snd_kcontrol *kcontrol,
631 struct snd_ctl_elem_info *info)
632 {
633 static const char *const texts[3] = {"TV Tuner", "FM", "Mic/Line"};
634
635 return snd_ctl_enum_info(info, 1, 3, texts);
636 }
637
638 static int snd_bt87x_capture_source_get(struct snd_kcontrol *kcontrol,
639 struct snd_ctl_elem_value *value)
640 {
641 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
642
643 value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
644 return 0;
645 }
646
647 static int snd_bt87x_capture_source_put(struct snd_kcontrol *kcontrol,
648 struct snd_ctl_elem_value *value)
649 {
650 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
651 u32 old_control;
652 int changed;
653
654 spin_lock_irq(&chip->reg_lock);
655 old_control = chip->reg_control;
656 chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
657 | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
658 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
659 changed = chip->reg_control != old_control;
660 spin_unlock_irq(&chip->reg_lock);
661 return changed;
662 }
663
664 static const struct snd_kcontrol_new snd_bt87x_capture_source = {
665 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
666 .name = "Capture Source",
667 .info = snd_bt87x_capture_source_info,
668 .get = snd_bt87x_capture_source_get,
669 .put = snd_bt87x_capture_source_put,
670 };
671
672 static int snd_bt87x_free(struct snd_bt87x *chip)
673 {
674 if (chip->mmio)
675 snd_bt87x_stop(chip);
676 if (chip->irq >= 0)
677 free_irq(chip->irq, chip);
678 iounmap(chip->mmio);
679 pci_release_regions(chip->pci);
680 pci_disable_device(chip->pci);
681 kfree(chip);
682 return 0;
683 }
684
685 static int snd_bt87x_dev_free(struct snd_device *device)
686 {
687 struct snd_bt87x *chip = device->device_data;
688 return snd_bt87x_free(chip);
689 }
690
691 static int snd_bt87x_pcm(struct snd_bt87x *chip, int device, char *name)
692 {
693 int err;
694 struct snd_pcm *pcm;
695
696 err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
697 if (err < 0)
698 return err;
699 pcm->private_data = chip;
700 strcpy(pcm->name, name);
701 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
702 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
703 &chip->pci->dev,
704 128 * 1024,
705 ALIGN(255 * 4092, 1024));
706 return 0;
707 }
708
709 static int snd_bt87x_create(struct snd_card *card,
710 struct pci_dev *pci,
711 struct snd_bt87x **rchip)
712 {
713 struct snd_bt87x *chip;
714 int err;
715 static struct snd_device_ops ops = {
716 .dev_free = snd_bt87x_dev_free
717 };
718
719 *rchip = NULL;
720
721 err = pci_enable_device(pci);
722 if (err < 0)
723 return err;
724
725 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
726 if (!chip) {
727 pci_disable_device(pci);
728 return -ENOMEM;
729 }
730 chip->card = card;
731 chip->pci = pci;
732 chip->irq = -1;
733 spin_lock_init(&chip->reg_lock);
734
735 if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) {
736 kfree(chip);
737 pci_disable_device(pci);
738 return err;
739 }
740 chip->mmio = pci_ioremap_bar(pci, 0);
741 if (!chip->mmio) {
742 dev_err(card->dev, "cannot remap io memory\n");
743 err = -ENOMEM;
744 goto fail;
745 }
746
747 chip->reg_control = CTL_A_PWRDN | CTL_DA_ES2 |
748 CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
749 chip->interrupt_mask = MY_INTERRUPTS;
750 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
751 snd_bt87x_writel(chip, REG_INT_MASK, 0);
752 snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
753
754 err = request_irq(pci->irq, snd_bt87x_interrupt, IRQF_SHARED,
755 KBUILD_MODNAME, chip);
756 if (err < 0) {
757 dev_err(card->dev, "cannot grab irq %d\n", pci->irq);
758 goto fail;
759 }
760 chip->irq = pci->irq;
761 pci_set_master(pci);
762 synchronize_irq(chip->irq);
763
764 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
765 if (err < 0)
766 goto fail;
767
768 *rchip = chip;
769 return 0;
770
771 fail:
772 snd_bt87x_free(chip);
773 return err;
774 }
775
776 #define BT_DEVICE(chip, subvend, subdev, id) \
777 { .vendor = PCI_VENDOR_ID_BROOKTREE, \
778 .device = chip, \
779 .subvendor = subvend, .subdevice = subdev, \
780 .driver_data = SND_BT87X_BOARD_ ## id }
781 /* driver_data is the card id for that device */
782
783 static const struct pci_device_id snd_bt87x_ids[] = {
784 /* Hauppauge WinTV series */
785 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0x13eb, GENERIC),
786 /* Hauppauge WinTV series */
787 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, 0x0070, 0x13eb, GENERIC),
788 /* Viewcast Osprey 200 */
789 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff01, OSPREY2x0),
790 /* Viewcast Osprey 440 (rate is configurable via gpio) */
791 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff07, OSPREY440),
792 /* ATI TV-Wonder */
793 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1002, 0x0001, GENERIC),
794 /* Leadtek Winfast tv 2000xp delux */
795 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x107d, 0x6606, GENERIC),
796 /* Pinnacle PCTV */
797 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x11bd, 0x0012, GENERIC),
798 /* Voodoo TV 200 */
799 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x121a, 0x3000, GENERIC),
800 /* Askey Computer Corp. MagicTView'99 */
801 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x144f, 0x3000, GENERIC),
802 /* AVerMedia Studio No. 103, 203, ...? */
803 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1461, 0x0003, AVPHONE98),
804 /* Prolink PixelView PV-M4900 */
805 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1554, 0x4011, GENERIC),
806 /* Pinnacle Studio PCTV rave */
807 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0xbd11, 0x1200, GENERIC),
808 { }
809 };
810 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
811
812 /* cards known not to have audio
813 * (DVB cards use the audio function to transfer MPEG data) */
814 static struct {
815 unsigned short subvendor, subdevice;
816 } blacklist[] = {
817 {0x0071, 0x0101}, /* Nebula Electronics DigiTV */
818 {0x11bd, 0x001c}, /* Pinnacle PCTV Sat */
819 {0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */
820 {0x1461, 0x0761}, /* AVermedia AverTV DVB-T */
821 {0x1461, 0x0771}, /* AVermedia DVB-T 771 */
822 {0x1822, 0x0001}, /* Twinhan VisionPlus DVB-T */
823 {0x18ac, 0xd500}, /* DVICO FusionHDTV 5 Lite */
824 {0x18ac, 0xdb10}, /* DVICO FusionHDTV DVB-T Lite */
825 {0x18ac, 0xdb11}, /* Ultraview DVB-T Lite */
826 {0x270f, 0xfc00}, /* Chaintech Digitop DST-1000 DVB-S */
827 {0x7063, 0x2000}, /* pcHDTV HD-2000 TV */
828 };
829
830 static struct pci_driver driver;
831
832 /* return the id of the card, or a negative value if it's blacklisted */
833 static int snd_bt87x_detect_card(struct pci_dev *pci)
834 {
835 int i;
836 const struct pci_device_id *supported;
837
838 supported = pci_match_id(snd_bt87x_ids, pci);
839 if (supported && supported->driver_data > 0)
840 return supported->driver_data;
841
842 for (i = 0; i < ARRAY_SIZE(blacklist); ++i)
843 if (blacklist[i].subvendor == pci->subsystem_vendor &&
844 blacklist[i].subdevice == pci->subsystem_device) {
845 dev_dbg(&pci->dev,
846 "card %#04x-%#04x:%#04x has no audio\n",
847 pci->device, pci->subsystem_vendor, pci->subsystem_device);
848 return -EBUSY;
849 }
850
851 dev_info(&pci->dev, "unknown card %#04x-%#04x:%#04x\n",
852 pci->device, pci->subsystem_vendor, pci->subsystem_device);
853 dev_info(&pci->dev, "please mail id, board name, and, "
854 "if it works, the correct digital_rate option to "
855 "<alsa-devel@alsa-project.org>\n");
856 return SND_BT87X_BOARD_UNKNOWN;
857 }
858
859 static int snd_bt87x_probe(struct pci_dev *pci,
860 const struct pci_device_id *pci_id)
861 {
862 static int dev;
863 struct snd_card *card;
864 struct snd_bt87x *chip;
865 int err;
866 enum snd_bt87x_boardid boardid;
867
868 if (!pci_id->driver_data) {
869 err = snd_bt87x_detect_card(pci);
870 if (err < 0)
871 return -ENODEV;
872 boardid = err;
873 } else
874 boardid = pci_id->driver_data;
875
876 if (dev >= SNDRV_CARDS)
877 return -ENODEV;
878 if (!enable[dev]) {
879 ++dev;
880 return -ENOENT;
881 }
882
883 err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
884 0, &card);
885 if (err < 0)
886 return err;
887
888 err = snd_bt87x_create(card, pci, &chip);
889 if (err < 0)
890 goto _error;
891
892 memcpy(&chip->board, &snd_bt87x_boards[boardid], sizeof(chip->board));
893
894 if (!chip->board.no_digital) {
895 if (digital_rate[dev] > 0)
896 chip->board.dig_rate = digital_rate[dev];
897
898 chip->reg_control |= chip->board.digital_fmt;
899
900 err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
901 if (err < 0)
902 goto _error;
903 }
904 if (!chip->board.no_analog) {
905 err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
906 if (err < 0)
907 goto _error;
908 err = snd_ctl_add(card, snd_ctl_new1(
909 &snd_bt87x_capture_volume, chip));
910 if (err < 0)
911 goto _error;
912 err = snd_ctl_add(card, snd_ctl_new1(
913 &snd_bt87x_capture_boost, chip));
914 if (err < 0)
915 goto _error;
916 err = snd_ctl_add(card, snd_ctl_new1(
917 &snd_bt87x_capture_source, chip));
918 if (err < 0)
919 goto _error;
920 }
921 dev_info(card->dev, "bt87x%d: Using board %d, %sanalog, %sdigital "
922 "(rate %d Hz)\n", dev, boardid,
923 chip->board.no_analog ? "no " : "",
924 chip->board.no_digital ? "no " : "", chip->board.dig_rate);
925
926 strcpy(card->driver, "Bt87x");
927 sprintf(card->shortname, "Brooktree Bt%x", pci->device);
928 sprintf(card->longname, "%s at %#llx, irq %i",
929 card->shortname, (unsigned long long)pci_resource_start(pci, 0),
930 chip->irq);
931 strcpy(card->mixername, "Bt87x");
932
933 err = snd_card_register(card);
934 if (err < 0)
935 goto _error;
936
937 pci_set_drvdata(pci, card);
938 ++dev;
939 return 0;
940
941 _error:
942 snd_card_free(card);
943 return err;
944 }
945
946 static void snd_bt87x_remove(struct pci_dev *pci)
947 {
948 snd_card_free(pci_get_drvdata(pci));
949 }
950
951 /* default entries for all Bt87x cards - it's not exported */
952 /* driver_data is set to 0 to call detection */
953 static const struct pci_device_id snd_bt87x_default_ids[] = {
954 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, PCI_ANY_ID, PCI_ANY_ID, UNKNOWN),
955 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, PCI_ANY_ID, PCI_ANY_ID, UNKNOWN),
956 { }
957 };
958
959 static struct pci_driver driver = {
960 .name = KBUILD_MODNAME,
961 .id_table = snd_bt87x_ids,
962 .probe = snd_bt87x_probe,
963 .remove = snd_bt87x_remove,
964 };
965
966 static int __init alsa_card_bt87x_init(void)
967 {
968 if (load_all)
969 driver.id_table = snd_bt87x_default_ids;
970 return pci_register_driver(&driver);
971 }
972
973 static void __exit alsa_card_bt87x_exit(void)
974 {
975 pci_unregister_driver(&driver);
976 }
977
978 module_init(alsa_card_bt87x_init)
979 module_exit(alsa_card_bt87x_exit)
Linux with added FPC-III support