2 * bt87x.c - Brooktree Bt878/Bt879 driver for ALSA
4 * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
6 * based on btaudio.c by Gerd Knorr <kraxel@bytesex.org>
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.
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.
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
24 #include <sound/driver.h>
25 #include <linux/init.h>
26 #include <linux/interrupt.h>
27 #include <linux/pci.h>
28 #include <linux/slab.h>
29 #include <linux/moduleparam.h>
31 #include <asm/bitops.h>
32 #include <sound/core.h>
33 #include <sound/pcm.h>
34 #include <sound/pcm_params.h>
35 #include <sound/control.h>
36 #include <sound/initval.h>
38 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
39 MODULE_DESCRIPTION("Brooktree Bt87x audio driver");
40 MODULE_LICENSE("GPL");
41 MODULE_SUPPORTED_DEVICE("{{Brooktree,Bt878},"
42 "{Brooktree,Bt879}}");
44 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
45 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
46 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
47 static int digital_rate[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = 0 }; /* digital input rate */
50 module_param_array(index, int, boot_devs, 0444);
51 MODULE_PARM_DESC(index, "Index value for Bt87x soundcard");
52 module_param_array(id, charp, boot_devs, 0444);
53 MODULE_PARM_DESC(id, "ID string for Bt87x soundcard");
54 module_param_array(enable, bool, boot_devs, 0444);
55 MODULE_PARM_DESC(enable, "Enable Bt87x soundcard");
56 module_param_array(digital_rate, int, boot_devs, 0444);
57 MODULE_PARM_DESC(digital_rate, "Digital input rate for Bt87x soundcard");
60 #ifndef PCI_VENDOR_ID_BROOKTREE
61 #define PCI_VENDOR_ID_BROOKTREE 0x109e
63 #ifndef PCI_DEVICE_ID_BROOKTREE_878
64 #define PCI_DEVICE_ID_BROOKTREE_878 0x0878
66 #ifndef PCI_DEVICE_ID_BROOKTREE_879
67 #define PCI_DEVICE_ID_BROOKTREE_879 0x0879
70 /* register offsets */
71 #define REG_INT_STAT 0x100 /* interrupt status */
72 #define REG_INT_MASK 0x104 /* interrupt mask */
73 #define REG_GPIO_DMA_CTL 0x10c /* audio control */
74 #define REG_PACKET_LEN 0x110 /* audio packet lengths */
75 #define REG_RISC_STRT_ADD 0x114 /* RISC program start address */
76 #define REG_RISC_COUNT 0x120 /* RISC program counter */
79 #define INT_OFLOW (1 << 3) /* audio A/D overflow */
80 #define INT_RISCI (1 << 11) /* RISC instruction IRQ bit set */
81 #define INT_FBUS (1 << 12) /* FIFO overrun due to bus access latency */
82 #define INT_FTRGT (1 << 13) /* FIFO overrun due to target latency */
83 #define INT_FDSR (1 << 14) /* FIFO data stream resynchronization */
84 #define INT_PPERR (1 << 15) /* PCI parity error */
85 #define INT_RIPERR (1 << 16) /* RISC instruction parity error */
86 #define INT_PABORT (1 << 17) /* PCI master or target abort */
87 #define INT_OCERR (1 << 18) /* invalid opcode */
88 #define INT_SCERR (1 << 19) /* sync counter overflow */
89 #define INT_RISC_EN (1 << 27) /* DMA controller running */
90 #define INT_RISCS_SHIFT 28 /* RISC status bits */
92 /* audio control bits */
93 #define CTL_FIFO_ENABLE (1 << 0) /* enable audio data FIFO */
94 #define CTL_RISC_ENABLE (1 << 1) /* enable audio DMA controller */
95 #define CTL_PKTP_4 (0 << 2) /* packet mode FIFO trigger point - 4 DWORDs */
96 #define CTL_PKTP_8 (1 << 2) /* 8 DWORDs */
97 #define CTL_PKTP_16 (2 << 2) /* 16 DWORDs */
98 #define CTL_ACAP_EN (1 << 4) /* enable audio capture */
99 #define CTL_DA_APP (1 << 5) /* GPIO input */
100 #define CTL_DA_IOM_AFE (0 << 6) /* audio A/D input */
101 #define CTL_DA_IOM_DA (1 << 6) /* digital audio input */
102 #define CTL_DA_SDR_SHIFT 8 /* DDF first stage decimation rate */
103 #define CTL_DA_SDR_MASK (0xf<< 8)
104 #define CTL_DA_LMT (1 << 12) /* limit audio data values */
105 #define CTL_DA_ES2 (1 << 13) /* enable DDF stage 2 */
106 #define CTL_DA_SBR (1 << 14) /* samples rounded to 8 bits */
107 #define CTL_DA_DPM (1 << 15) /* data packet mode */
108 #define CTL_DA_LRD_SHIFT 16 /* ALRCK delay */
109 #define CTL_DA_MLB (1 << 21) /* MSB/LSB format */
110 #define CTL_DA_LRI (1 << 22) /* left/right indication */
111 #define CTL_DA_SCE (1 << 23) /* sample clock edge */
112 #define CTL_A_SEL_STV (0 << 24) /* TV tuner audio input */
113 #define CTL_A_SEL_SFM (1 << 24) /* FM audio input */
114 #define CTL_A_SEL_SML (2 << 24) /* mic/line audio input */
115 #define CTL_A_SEL_SMXC (3 << 24) /* MUX bypass */
116 #define CTL_A_SEL_SHIFT 24
117 #define CTL_A_SEL_MASK (3 << 24)
118 #define CTL_A_PWRDN (1 << 26) /* analog audio power-down */
119 #define CTL_A_G2X (1 << 27) /* audio gain boost */
120 #define CTL_A_GAIN_SHIFT 28 /* audio input gain */
121 #define CTL_A_GAIN_MASK (0xf<<28)
123 /* RISC instruction opcodes */
124 #define RISC_WRITE (0x1 << 28) /* write FIFO data to memory at address */
125 #define RISC_WRITEC (0x5 << 28) /* write FIFO data to memory at current address */
126 #define RISC_SKIP (0x2 << 28) /* skip FIFO data */
127 #define RISC_JUMP (0x7 << 28) /* jump to address */
128 #define RISC_SYNC (0x8 << 28) /* synchronize with FIFO */
130 /* RISC instruction bits */
131 #define RISC_BYTES_ENABLE (0xf << 12) /* byte enable bits */
132 #define RISC_RESYNC ( 1 << 15) /* disable FDSR errors */
133 #define RISC_SET_STATUS_SHIFT 16 /* set status bits */
134 #define RISC_RESET_STATUS_SHIFT 20 /* clear status bits */
135 #define RISC_IRQ ( 1 << 24) /* interrupt */
136 #define RISC_EOL ( 1 << 26) /* end of line */
137 #define RISC_SOL ( 1 << 27) /* start of line */
139 /* SYNC status bits values */
140 #define RISC_SYNC_FM1 0x6
141 #define RISC_SYNC_VRO 0xc
143 #define ERROR_INTERRUPTS (INT_FBUS | INT_FTRGT | INT_PPERR | \
144 INT_RIPERR | INT_PABORT | INT_OCERR)
145 #define MY_INTERRUPTS (INT_RISCI | ERROR_INTERRUPTS)
147 /* SYNC, one WRITE per line, one extra WRITE per page boundary, SYNC, JUMP */
148 #define MAX_RISC_SIZE ((1 + 255 + (PAGE_ALIGN(255 * 4092) / PAGE_SIZE - 1) + 1 + 1) * 8)
150 typedef struct snd_bt87x bt87x_t;
162 snd_pcm_substream_t *substream;
164 struct snd_dma_buffer dma_risc;
165 unsigned int line_bytes;
172 enum { DEVICE_DIGITAL, DEVICE_ANALOG };
174 static inline u32 snd_bt87x_readl(bt87x_t *chip, u32 reg)
176 return readl(chip->mmio + reg);
179 static inline void snd_bt87x_writel(bt87x_t *chip, u32 reg, u32 value)
181 writel(value, chip->mmio + reg);
184 static int snd_bt87x_create_risc(bt87x_t *chip, snd_pcm_substream_t *substream,
185 unsigned int periods, unsigned int period_bytes)
187 struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
188 unsigned int i, offset;
191 if (chip->dma_risc.area == NULL) {
192 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
193 PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
196 risc = (u32 *)chip->dma_risc.area;
198 *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
199 *risc++ = cpu_to_le32(0);
200 for (i = 0; i < periods; ++i) {
207 len = PAGE_SIZE - (offset % PAGE_SIZE);
210 cmd = RISC_WRITE | len;
211 if (rest == period_bytes) {
212 u32 block = i * 16 / periods;
214 cmd |= block << RISC_SET_STATUS_SHIFT;
215 cmd |= (~block & 0xf) << RISC_RESET_STATUS_SHIFT;
218 cmd |= RISC_EOL | RISC_IRQ;
219 *risc++ = cpu_to_le32(cmd);
220 *risc++ = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, offset));
225 *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO);
226 *risc++ = cpu_to_le32(0);
227 *risc++ = cpu_to_le32(RISC_JUMP);
228 *risc++ = cpu_to_le32(chip->dma_risc.addr);
229 chip->line_bytes = period_bytes;
230 chip->lines = periods;
234 static void snd_bt87x_free_risc(bt87x_t *chip)
236 if (chip->dma_risc.area) {
237 snd_dma_free_pages(&chip->dma_risc);
238 chip->dma_risc.area = NULL;
242 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id, struct pt_regs *regs)
244 bt87x_t *chip = dev_id;
247 status = snd_bt87x_readl(chip, REG_INT_STAT);
248 if (!(status & MY_INTERRUPTS))
250 snd_bt87x_writel(chip, REG_INT_STAT, status & MY_INTERRUPTS);
252 if (status & ERROR_INTERRUPTS) {
253 if (status & (INT_FBUS | INT_FTRGT))
254 snd_printk(KERN_WARNING "FIFO overrun, status %#08x\n", status);
255 if (status & INT_OCERR)
256 snd_printk(KERN_ERR "internal RISC error, status %#08x\n", status);
257 if (status & (INT_PPERR | INT_RIPERR | INT_PABORT)) {
259 pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
260 pci_write_config_word(chip->pci, PCI_STATUS, pci_status &
261 (PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
262 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
263 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));
264 snd_printk(KERN_ERR "Aieee - PCI error! status %#08x, PCI status %#04x\n",
268 if (status & INT_RISCI) {
269 int current_block, irq_block;
271 /* assume that exactly one line has been recorded */
272 chip->current_line = (chip->current_line + 1) % chip->lines;
273 /* but check if some interrupts have been skipped */
274 current_block = chip->current_line * 16 / chip->lines;
275 irq_block = status >> INT_RISCS_SHIFT;
276 if (current_block != irq_block)
277 chip->current_line = (irq_block * chip->lines + 15) / 16;
279 snd_pcm_period_elapsed(chip->substream);
284 static snd_pcm_hardware_t snd_bt87x_digital_hw = {
285 .info = SNDRV_PCM_INFO_MMAP |
286 SNDRV_PCM_INFO_INTERLEAVED |
287 SNDRV_PCM_INFO_BLOCK_TRANSFER |
288 SNDRV_PCM_INFO_MMAP_VALID,
289 .formats = SNDRV_PCM_FMTBIT_S16_LE,
290 .rates = 0, /* set at runtime */
293 .buffer_bytes_max = 255 * 4092,
294 .period_bytes_min = 32,
295 .period_bytes_max = 4092,
300 static snd_pcm_hardware_t snd_bt87x_analog_hw = {
301 .info = SNDRV_PCM_INFO_MMAP |
302 SNDRV_PCM_INFO_INTERLEAVED |
303 SNDRV_PCM_INFO_BLOCK_TRANSFER |
304 SNDRV_PCM_INFO_MMAP_VALID,
305 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
306 .rates = SNDRV_PCM_RATE_KNOT,
311 .buffer_bytes_max = 255 * 4092,
312 .period_bytes_min = 32,
313 .period_bytes_max = 4092,
318 static int snd_bt87x_set_digital_hw(bt87x_t *chip, snd_pcm_runtime_t *runtime)
324 {8000, SNDRV_PCM_RATE_8000},
325 {11025, SNDRV_PCM_RATE_11025},
326 {16000, SNDRV_PCM_RATE_16000},
327 {22050, SNDRV_PCM_RATE_22050},
328 {32000, SNDRV_PCM_RATE_32000},
329 {44100, SNDRV_PCM_RATE_44100},
330 {48000, SNDRV_PCM_RATE_48000}
334 chip->reg_control |= CTL_DA_IOM_DA;
335 runtime->hw = snd_bt87x_digital_hw;
336 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
337 for (i = 0; i < ARRAY_SIZE(ratebits); ++i)
338 if (chip->dig_rate == ratebits[i].rate) {
339 runtime->hw.rates = ratebits[i].bit;
342 runtime->hw.rate_min = chip->dig_rate;
343 runtime->hw.rate_max = chip->dig_rate;
347 static int snd_bt87x_set_analog_hw(bt87x_t *chip, snd_pcm_runtime_t *runtime)
349 static ratnum_t analog_clock = {
355 static snd_pcm_hw_constraint_ratnums_t constraint_rates = {
357 .rats = &analog_clock
360 chip->reg_control &= ~CTL_DA_IOM_DA;
361 runtime->hw = snd_bt87x_analog_hw;
362 return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
366 static int snd_bt87x_pcm_open(snd_pcm_substream_t *substream)
368 bt87x_t *chip = snd_pcm_substream_chip(substream);
369 snd_pcm_runtime_t *runtime = substream->runtime;
372 if (test_and_set_bit(0, &chip->opened))
375 if (substream->pcm->device == DEVICE_DIGITAL)
376 err = snd_bt87x_set_digital_hw(chip, runtime);
378 err = snd_bt87x_set_analog_hw(chip, runtime);
382 err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
386 chip->substream = substream;
390 clear_bit(0, &chip->opened);
391 smp_mb__after_clear_bit();
395 static int snd_bt87x_close(snd_pcm_substream_t *substream)
397 bt87x_t *chip = snd_pcm_substream_chip(substream);
399 chip->substream = NULL;
400 clear_bit(0, &chip->opened);
401 smp_mb__after_clear_bit();
405 static int snd_bt87x_hw_params(snd_pcm_substream_t *substream,
406 snd_pcm_hw_params_t *hw_params)
408 bt87x_t *chip = snd_pcm_substream_chip(substream);
411 err = snd_pcm_lib_malloc_pages(substream,
412 params_buffer_bytes(hw_params));
415 return snd_bt87x_create_risc(chip, substream,
416 params_periods(hw_params),
417 params_period_bytes(hw_params));
420 static int snd_bt87x_hw_free(snd_pcm_substream_t *substream)
422 bt87x_t *chip = snd_pcm_substream_chip(substream);
424 snd_bt87x_free_risc(chip);
425 snd_pcm_lib_free_pages(substream);
429 static int snd_bt87x_prepare(snd_pcm_substream_t *substream)
431 bt87x_t *chip = snd_pcm_substream_chip(substream);
432 snd_pcm_runtime_t *runtime = substream->runtime;
435 spin_lock_irq(&chip->reg_lock);
436 chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
437 decimation = (1792000 + runtime->rate / 4) / runtime->rate;
438 chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
439 if (runtime->format == SNDRV_PCM_FORMAT_S8)
440 chip->reg_control |= CTL_DA_SBR;
441 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
442 spin_unlock_irq(&chip->reg_lock);
446 static int snd_bt87x_start(bt87x_t *chip)
448 spin_lock(&chip->reg_lock);
449 chip->current_line = 0;
450 chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
451 snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
452 snd_bt87x_writel(chip, REG_PACKET_LEN,
453 chip->line_bytes | (chip->lines << 16));
454 snd_bt87x_writel(chip, REG_INT_MASK, MY_INTERRUPTS);
455 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
456 spin_unlock(&chip->reg_lock);
460 static int snd_bt87x_stop(bt87x_t *chip)
462 spin_lock(&chip->reg_lock);
463 chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
464 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
465 snd_bt87x_writel(chip, REG_INT_MASK, 0);
466 snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
467 spin_unlock(&chip->reg_lock);
471 static int snd_bt87x_trigger(snd_pcm_substream_t *substream, int cmd)
473 bt87x_t *chip = snd_pcm_substream_chip(substream);
476 case SNDRV_PCM_TRIGGER_START:
477 return snd_bt87x_start(chip);
478 case SNDRV_PCM_TRIGGER_STOP:
479 return snd_bt87x_stop(chip);
485 static snd_pcm_uframes_t snd_bt87x_pointer(snd_pcm_substream_t *substream)
487 bt87x_t *chip = snd_pcm_substream_chip(substream);
488 snd_pcm_runtime_t *runtime = substream->runtime;
490 return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
493 static snd_pcm_ops_t snd_bt87x_pcm_ops = {
494 .open = snd_bt87x_pcm_open,
495 .close = snd_bt87x_close,
496 .ioctl = snd_pcm_lib_ioctl,
497 .hw_params = snd_bt87x_hw_params,
498 .hw_free = snd_bt87x_hw_free,
499 .prepare = snd_bt87x_prepare,
500 .trigger = snd_bt87x_trigger,
501 .pointer = snd_bt87x_pointer,
502 .page = snd_pcm_sgbuf_ops_page,
505 static int snd_bt87x_capture_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
507 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
509 info->value.integer.min = 0;
510 info->value.integer.max = 15;
514 static int snd_bt87x_capture_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
516 bt87x_t *chip = snd_kcontrol_chip(kcontrol);
518 value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
522 static int snd_bt87x_capture_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
524 bt87x_t *chip = snd_kcontrol_chip(kcontrol);
528 spin_lock_irq(&chip->reg_lock);
529 old_control = chip->reg_control;
530 chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
531 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
532 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
533 changed = old_control != chip->reg_control;
534 spin_unlock_irq(&chip->reg_lock);
538 static snd_kcontrol_new_t snd_bt87x_capture_volume = {
539 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
540 .name = "Capture Volume",
541 .info = snd_bt87x_capture_volume_info,
542 .get = snd_bt87x_capture_volume_get,
543 .put = snd_bt87x_capture_volume_put,
546 static int snd_bt87x_capture_boost_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
548 info->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
550 info->value.integer.min = 0;
551 info->value.integer.max = 1;
555 static int snd_bt87x_capture_boost_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
557 bt87x_t *chip = snd_kcontrol_chip(kcontrol);
559 value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
563 static int snd_bt87x_capture_boost_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
565 bt87x_t *chip = snd_kcontrol_chip(kcontrol);
569 spin_lock_irq(&chip->reg_lock);
570 old_control = chip->reg_control;
571 chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
572 | (value->value.integer.value[0] ? CTL_A_G2X : 0);
573 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
574 changed = chip->reg_control != old_control;
575 spin_unlock_irq(&chip->reg_lock);
579 static snd_kcontrol_new_t snd_bt87x_capture_boost = {
580 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
581 .name = "Capture Boost",
582 .info = snd_bt87x_capture_boost_info,
583 .get = snd_bt87x_capture_boost_get,
584 .put = snd_bt87x_capture_boost_put,
587 static int snd_bt87x_capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
589 static char *texts[3] = {"TV Tuner", "FM", "Mic/Line"};
591 info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
593 info->value.enumerated.items = 3;
594 if (info->value.enumerated.item > 2)
595 info->value.enumerated.item = 2;
596 strcpy(info->value.enumerated.name, texts[info->value.enumerated.item]);
600 static int snd_bt87x_capture_source_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
602 bt87x_t *chip = snd_kcontrol_chip(kcontrol);
604 value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
608 static int snd_bt87x_capture_source_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
610 bt87x_t *chip = snd_kcontrol_chip(kcontrol);
614 spin_lock_irq(&chip->reg_lock);
615 old_control = chip->reg_control;
616 chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
617 | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
618 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
619 changed = chip->reg_control != old_control;
620 spin_unlock_irq(&chip->reg_lock);
624 static snd_kcontrol_new_t snd_bt87x_capture_source = {
625 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
626 .name = "Capture Source",
627 .info = snd_bt87x_capture_source_info,
628 .get = snd_bt87x_capture_source_get,
629 .put = snd_bt87x_capture_source_put,
632 static int snd_bt87x_free(bt87x_t *chip)
635 snd_bt87x_stop(chip);
637 synchronize_irq(chip->irq);
642 free_irq(chip->irq, chip);
643 pci_release_regions(chip->pci);
648 static int snd_bt87x_dev_free(snd_device_t *device)
650 bt87x_t *chip = device->device_data;
651 return snd_bt87x_free(chip);
654 static int __devinit snd_bt87x_pcm(bt87x_t *chip, int device, char *name)
659 err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
662 pcm->private_data = chip;
663 strcpy(pcm->name, name);
664 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
665 return snd_pcm_lib_preallocate_pages_for_all(pcm,
666 SNDRV_DMA_TYPE_DEV_SG,
667 snd_dma_pci_data(chip->pci),
669 (255 * 4092 + 1023) & ~1023);
672 static int __devinit snd_bt87x_create(snd_card_t *card,
678 static snd_device_ops_t ops = {
679 .dev_free = snd_bt87x_dev_free
684 err = pci_enable_device(pci);
688 chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
694 spin_lock_init(&chip->reg_lock);
696 if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) {
700 chip->mmio = ioremap_nocache(pci_resource_start(pci, 0),
701 pci_resource_len(pci, 0));
703 snd_bt87x_free(chip);
704 snd_printk(KERN_ERR "cannot remap io memory\n");
708 chip->reg_control = CTL_DA_ES2 | CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
709 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
710 snd_bt87x_writel(chip, REG_INT_MASK, 0);
711 snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
713 if (request_irq(pci->irq, snd_bt87x_interrupt, SA_INTERRUPT | SA_SHIRQ,
714 "Bt87x audio", chip)) {
715 snd_bt87x_free(chip);
716 snd_printk(KERN_ERR "cannot grab irq\n");
719 chip->irq = pci->irq;
721 synchronize_irq(chip->irq);
723 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
725 snd_bt87x_free(chip);
728 snd_card_set_dev(card, &pci->dev);
733 static int __devinit snd_bt87x_probe(struct pci_dev *pci,
734 const struct pci_device_id *pci_id)
741 if (dev >= SNDRV_CARDS)
748 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
752 err = snd_bt87x_create(card, pci, &chip);
756 if (digital_rate[dev] > 0)
757 chip->dig_rate = digital_rate[dev];
759 chip->dig_rate = (int)pci_id->driver_data;
761 err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
764 err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
768 err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_volume, chip));
771 err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_boost, chip));
774 err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_source, chip));
778 strcpy(card->driver, "Bt87x");
779 sprintf(card->shortname, "Brooktree Bt%x", pci->device);
780 sprintf(card->longname, "%s at %#lx, irq %i",
781 card->shortname, pci_resource_start(pci, 0), chip->irq);
782 strcpy(card->mixername, "Bt87x");
784 err = snd_card_register(card);
788 pci_set_drvdata(pci, card);
797 static void __devexit snd_bt87x_remove(struct pci_dev *pci)
799 snd_card_free(pci_get_drvdata(pci));
800 pci_set_drvdata(pci, NULL);
803 #define BT_DEVICE(chip, subvend, subdev, rate) \
804 { .vendor = PCI_VENDOR_ID_BROOKTREE, \
805 .device = PCI_DEVICE_ID_BROOKTREE_##chip, \
806 .subvendor = subvend, .subdevice = subdev, \
807 .driver_data = rate }
809 /* driver_data is the default digital_rate value for that device */
810 static struct pci_device_id snd_bt87x_ids[] = {
811 BT_DEVICE(878, 0x0070, 0xff01, 44100), /* Osprey 200 */
813 /* default entries for 32kHz and generic Bt87x cards */
814 BT_DEVICE(878, PCI_ANY_ID, PCI_ANY_ID, 32000),
815 BT_DEVICE(879, PCI_ANY_ID, PCI_ANY_ID, 32000),
818 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
820 static struct pci_driver driver = {
822 .id_table = snd_bt87x_ids,
823 .probe = snd_bt87x_probe,
824 .remove = __devexit_p(snd_bt87x_remove),
827 static int __init alsa_card_bt87x_init(void)
829 return pci_module_init(&driver);
832 static void __exit alsa_card_bt87x_exit(void)
834 pci_unregister_driver(&driver);
837 module_init(alsa_card_bt87x_init)
838 module_exit(alsa_card_bt87x_exit)