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>
30 #include <asm/bitops.h>
31 #include <sound/core.h>
32 #include <sound/pcm.h>
33 #include <sound/pcm_params.h>
34 #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_CLASSES("{sound}");
42 MODULE_DEVICES("{{Brooktree,Bt878},"
43 "{Brooktree,Bt879}}");
45 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
46 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
47 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
48 static int digital_rate[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = 0 }; /* digital input rate */
50 MODULE_PARM(index, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
51 MODULE_PARM_DESC(index, "Index value for Bt87x soundcard");
52 MODULE_PARM_SYNTAX(index, SNDRV_INDEX_DESC);
53 MODULE_PARM(id, "1-" __MODULE_STRING(SNDRV_CARDS) "s");
54 MODULE_PARM_DESC(id, "ID string for Bt87x soundcard");
55 MODULE_PARM_SYNTAX(id, SNDRV_ID_DESC);
56 MODULE_PARM(enable, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
57 MODULE_PARM_DESC(enable, "Enable Bt87x soundcard");
58 MODULE_PARM_SYNTAX(enable, SNDRV_ENABLE_DESC);
59 MODULE_PARM(digital_rate, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
60 MODULE_PARM_DESC(digital_rate, "Digital input rate for Bt87x soundcard");
61 MODULE_PARM_SYNTAX(digital_rate, SNDRV_ENABLED);
64 #ifndef PCI_VENDOR_ID_BROOKTREE
65 #define PCI_VENDOR_ID_BROOKTREE 0x109e
67 #ifndef PCI_DEVICE_ID_BROOKTREE_878
68 #define PCI_DEVICE_ID_BROOKTREE_878 0x0878
70 #ifndef PCI_DEVICE_ID_BROOKTREE_879
71 #define PCI_DEVICE_ID_BROOKTREE_879 0x0879
74 /* register offsets */
75 #define REG_INT_STAT 0x100 /* interrupt status */
76 #define REG_INT_MASK 0x104 /* interrupt mask */
77 #define REG_GPIO_DMA_CTL 0x10c /* audio control */
78 #define REG_PACKET_LEN 0x110 /* audio packet lengths */
79 #define REG_RISC_STRT_ADD 0x114 /* RISC program start address */
80 #define REG_RISC_COUNT 0x120 /* RISC program counter */
83 #define INT_OFLOW (1 << 3) /* audio A/D overflow */
84 #define INT_RISCI (1 << 11) /* RISC instruction IRQ bit set */
85 #define INT_FBUS (1 << 12) /* FIFO overrun due to bus access latency */
86 #define INT_FTRGT (1 << 13) /* FIFO overrun due to target latency */
87 #define INT_FDSR (1 << 14) /* FIFO data stream resynchronization */
88 #define INT_PPERR (1 << 15) /* PCI parity error */
89 #define INT_RIPERR (1 << 16) /* RISC instruction parity error */
90 #define INT_PABORT (1 << 17) /* PCI master or target abort */
91 #define INT_OCERR (1 << 18) /* invalid opcode */
92 #define INT_SCERR (1 << 19) /* sync counter overflow */
93 #define INT_RISC_EN (1 << 27) /* DMA controller running */
94 #define INT_RISCS_SHIFT 28 /* RISC status bits */
96 /* audio control bits */
97 #define CTL_FIFO_ENABLE (1 << 0) /* enable audio data FIFO */
98 #define CTL_RISC_ENABLE (1 << 1) /* enable audio DMA controller */
99 #define CTL_PKTP_4 (0 << 2) /* packet mode FIFO trigger point - 4 DWORDs */
100 #define CTL_PKTP_8 (1 << 2) /* 8 DWORDs */
101 #define CTL_PKTP_16 (2 << 2) /* 16 DWORDs */
102 #define CTL_ACAP_EN (1 << 4) /* enable audio capture */
103 #define CTL_DA_APP (1 << 5) /* GPIO input */
104 #define CTL_DA_IOM_AFE (0 << 6) /* audio A/D input */
105 #define CTL_DA_IOM_DA (1 << 6) /* digital audio input */
106 #define CTL_DA_SDR_SHIFT 8 /* DDF first stage decimation rate */
107 #define CTL_DA_SDR_MASK (0xf<< 8)
108 #define CTL_DA_LMT (1 << 12) /* limit audio data values */
109 #define CTL_DA_ES2 (1 << 13) /* enable DDF stage 2 */
110 #define CTL_DA_SBR (1 << 14) /* samples rounded to 8 bits */
111 #define CTL_DA_DPM (1 << 15) /* data packet mode */
112 #define CTL_DA_LRD_SHIFT 16 /* ALRCK delay */
113 #define CTL_DA_MLB (1 << 21) /* MSB/LSB format */
114 #define CTL_DA_LRI (1 << 22) /* left/right indication */
115 #define CTL_DA_SCE (1 << 23) /* sample clock edge */
116 #define CTL_A_SEL_STV (0 << 24) /* TV tuner audio input */
117 #define CTL_A_SEL_SFM (1 << 24) /* FM audio input */
118 #define CTL_A_SEL_SML (2 << 24) /* mic/line audio input */
119 #define CTL_A_SEL_SMXC (3 << 24) /* MUX bypass */
120 #define CTL_A_SEL_SHIFT 24
121 #define CTL_A_SEL_MASK (3 << 24)
122 #define CTL_A_PWRDN (1 << 26) /* analog audio power-down */
123 #define CTL_A_G2X (1 << 27) /* audio gain boost */
124 #define CTL_A_GAIN_SHIFT 28 /* audio input gain */
125 #define CTL_A_GAIN_MASK (0xf<<28)
127 /* RISC instruction opcodes */
128 #define RISC_WRITE (0x1 << 28) /* write FIFO data to memory at address */
129 #define RISC_WRITEC (0x5 << 28) /* write FIFO data to memory at current address */
130 #define RISC_SKIP (0x2 << 28) /* skip FIFO data */
131 #define RISC_JUMP (0x7 << 28) /* jump to address */
132 #define RISC_SYNC (0x8 << 28) /* synchronize with FIFO */
134 /* RISC instruction bits */
135 #define RISC_BYTES_ENABLE (0xf << 12) /* byte enable bits */
136 #define RISC_RESYNC ( 1 << 15) /* disable FDSR errors */
137 #define RISC_SET_STATUS_SHIFT 16 /* set status bits */
138 #define RISC_RESET_STATUS_SHIFT 20 /* clear status bits */
139 #define RISC_IRQ ( 1 << 24) /* interrupt */
140 #define RISC_EOL ( 1 << 26) /* end of line */
141 #define RISC_SOL ( 1 << 27) /* start of line */
143 /* SYNC status bits values */
144 #define RISC_SYNC_FM1 0x6
145 #define RISC_SYNC_VRO 0xc
147 #define ERROR_INTERRUPTS (INT_FBUS | INT_FTRGT | INT_PPERR | \
148 INT_RIPERR | INT_PABORT | INT_OCERR)
149 #define MY_INTERRUPTS (INT_RISCI | ERROR_INTERRUPTS)
151 /* SYNC, one WRITE per line, one extra WRITE per page boundary, SYNC, JUMP */
152 #define MAX_RISC_SIZE ((1 + 255 + (PAGE_ALIGN(255 * 4092) / PAGE_SIZE - 1) + 1 + 1) * 8)
154 #define chip_t bt87x_t
155 typedef struct snd_bt87x bt87x_t;
161 struct resource *res_mmio;
168 snd_pcm_substream_t *substream;
170 struct snd_dma_device dma_dev;
171 struct snd_dma_buffer dma_risc;
172 unsigned int line_bytes;
179 enum { DEVICE_DIGITAL, DEVICE_ANALOG };
181 static inline u32 snd_bt87x_readl(bt87x_t *chip, u32 reg)
183 return readl(chip->mmio + reg);
186 static inline void snd_bt87x_writel(bt87x_t *chip, u32 reg, u32 value)
188 writel(value, chip->mmio + reg);
191 static int snd_bt87x_create_risc(bt87x_t *chip, snd_pcm_substream_t *substream,
192 unsigned int periods, unsigned int period_bytes)
194 struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
195 unsigned int i, offset;
198 if (chip->dma_risc.area == NULL) {
199 memset(&chip->dma_dev, 0, sizeof(chip->dma_dev));
200 chip->dma_dev.type = SNDRV_DMA_TYPE_DEV;
201 chip->dma_dev.dev = snd_dma_pci_data(chip->pci);
202 if (snd_dma_alloc_pages(&chip->dma_dev, PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
205 risc = (u32 *)chip->dma_risc.area;
207 *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
208 *risc++ = cpu_to_le32(0);
209 for (i = 0; i < periods; ++i) {
216 len = PAGE_SIZE - (offset % PAGE_SIZE);
219 cmd = RISC_WRITE | len;
220 if (rest == period_bytes) {
221 u32 block = i * 16 / periods;
223 cmd |= block << RISC_SET_STATUS_SHIFT;
224 cmd |= (~block & 0xf) << RISC_RESET_STATUS_SHIFT;
227 cmd |= RISC_EOL | RISC_IRQ;
228 *risc++ = cpu_to_le32(cmd);
229 *risc++ = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, offset));
234 *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO);
235 *risc++ = cpu_to_le32(0);
236 *risc++ = cpu_to_le32(RISC_JUMP);
237 *risc++ = cpu_to_le32(chip->dma_risc.addr);
238 chip->line_bytes = period_bytes;
239 chip->lines = periods;
243 static void snd_bt87x_free_risc(bt87x_t *chip)
245 if (chip->dma_risc.area) {
246 snd_dma_free_pages(&chip->dma_dev, &chip->dma_risc);
247 chip->dma_risc.area = NULL;
251 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id, struct pt_regs *regs)
253 bt87x_t *chip = snd_magic_cast(bt87x_t, dev_id, return IRQ_NONE);
256 status = snd_bt87x_readl(chip, REG_INT_STAT);
257 if (!(status & MY_INTERRUPTS))
259 snd_bt87x_writel(chip, REG_INT_STAT, status & MY_INTERRUPTS);
261 if (status & ERROR_INTERRUPTS) {
262 if (status & (INT_FBUS | INT_FTRGT))
263 snd_printk(KERN_WARNING "FIFO overrun, status %#08x\n", status);
264 if (status & INT_OCERR)
265 snd_printk(KERN_ERR "internal RISC error, status %#08x\n", status);
266 if (status & (INT_PPERR | INT_RIPERR | INT_PABORT)) {
268 pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
269 pci_write_config_word(chip->pci, PCI_STATUS, pci_status &
270 (PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
271 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
272 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));
273 snd_printk(KERN_ERR "Aieee - PCI error! status %#08x, PCI status %#04x\n",
277 if (status & INT_RISCI) {
278 int current_block, irq_block;
280 /* assume that exactly one line has been recorded */
281 chip->current_line = (chip->current_line + 1) % chip->lines;
282 /* but check if some interrupts have been skipped */
283 current_block = chip->current_line * 16 / chip->lines;
284 irq_block = status >> INT_RISCS_SHIFT;
285 if (current_block != irq_block)
286 chip->current_line = (irq_block * chip->lines + 15) / 16;
288 snd_pcm_period_elapsed(chip->substream);
293 static snd_pcm_hardware_t snd_bt87x_digital_hw = {
294 .info = SNDRV_PCM_INFO_MMAP |
295 SNDRV_PCM_INFO_INTERLEAVED |
296 SNDRV_PCM_INFO_BLOCK_TRANSFER |
297 SNDRV_PCM_INFO_MMAP_VALID,
298 .formats = SNDRV_PCM_FMTBIT_S16_LE,
299 .rates = 0, /* set at runtime */
302 .buffer_bytes_max = 255 * 4092,
303 .period_bytes_min = 32,
304 .period_bytes_max = 4092,
309 static snd_pcm_hardware_t snd_bt87x_analog_hw = {
310 .info = SNDRV_PCM_INFO_MMAP |
311 SNDRV_PCM_INFO_INTERLEAVED |
312 SNDRV_PCM_INFO_BLOCK_TRANSFER |
313 SNDRV_PCM_INFO_MMAP_VALID,
314 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
315 .rates = SNDRV_PCM_RATE_KNOT,
320 .buffer_bytes_max = 255 * 4092,
321 .period_bytes_min = 32,
322 .period_bytes_max = 4092,
327 static int snd_bt87x_set_digital_hw(bt87x_t *chip, snd_pcm_runtime_t *runtime)
333 {8000, SNDRV_PCM_RATE_8000},
334 {11025, SNDRV_PCM_RATE_11025},
335 {16000, SNDRV_PCM_RATE_16000},
336 {22050, SNDRV_PCM_RATE_22050},
337 {32000, SNDRV_PCM_RATE_32000},
338 {44100, SNDRV_PCM_RATE_44100},
339 {48000, SNDRV_PCM_RATE_48000}
343 chip->reg_control |= CTL_DA_IOM_DA;
344 runtime->hw = snd_bt87x_digital_hw;
345 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
346 for (i = 0; i < ARRAY_SIZE(ratebits); ++i)
347 if (chip->dig_rate == ratebits[i].rate) {
348 runtime->hw.rates = ratebits[i].bit;
351 runtime->hw.rate_min = chip->dig_rate;
352 runtime->hw.rate_max = chip->dig_rate;
356 static int snd_bt87x_set_analog_hw(bt87x_t *chip, snd_pcm_runtime_t *runtime)
358 static unsigned int rates[] = {
359 119467, 128000, 137846, 149333, 162909, 179200,
360 199111, 224000, 256000, 298667, 358400, 448000
362 static snd_pcm_hw_constraint_list_t constraint_rates = {
363 .count = ARRAY_SIZE(rates),
368 chip->reg_control &= ~CTL_DA_IOM_DA;
369 runtime->hw = snd_bt87x_analog_hw;
370 return snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
374 static int snd_bt87x_pcm_open(snd_pcm_substream_t *substream)
376 bt87x_t *chip = snd_pcm_substream_chip(substream);
377 snd_pcm_runtime_t *runtime = substream->runtime;
380 if (test_and_set_bit(0, &chip->opened))
383 if (substream->pcm->device == DEVICE_DIGITAL)
384 err = snd_bt87x_set_digital_hw(chip, runtime);
386 err = snd_bt87x_set_analog_hw(chip, runtime);
390 err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
394 chip->substream = substream;
398 clear_bit(0, &chip->opened);
399 smp_mb__after_clear_bit();
403 static int snd_bt87x_close(snd_pcm_substream_t *substream)
405 bt87x_t *chip = snd_pcm_substream_chip(substream);
407 chip->substream = NULL;
408 clear_bit(0, &chip->opened);
409 smp_mb__after_clear_bit();
413 static int snd_bt87x_hw_params(snd_pcm_substream_t *substream,
414 snd_pcm_hw_params_t *hw_params)
416 bt87x_t *chip = snd_pcm_substream_chip(substream);
419 err = snd_pcm_lib_malloc_pages(substream,
420 params_buffer_bytes(hw_params));
423 return snd_bt87x_create_risc(chip, substream,
424 params_periods(hw_params),
425 params_period_bytes(hw_params));
428 static int snd_bt87x_hw_free(snd_pcm_substream_t *substream)
430 bt87x_t *chip = snd_pcm_substream_chip(substream);
432 snd_bt87x_free_risc(chip);
433 snd_pcm_lib_free_pages(substream);
437 static int snd_bt87x_prepare(snd_pcm_substream_t *substream)
439 bt87x_t *chip = snd_pcm_substream_chip(substream);
440 snd_pcm_runtime_t *runtime = substream->runtime;
444 spin_lock_irqsave(&chip->reg_lock, flags);
445 chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
446 decimation = (1792000 + 5) / runtime->rate;
447 chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
448 if (runtime->format == SNDRV_PCM_FORMAT_S8)
449 chip->reg_control |= CTL_DA_SBR;
450 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
451 spin_unlock_irqrestore(&chip->reg_lock, flags);
455 static int snd_bt87x_start(bt87x_t *chip)
459 spin_lock_irqsave(&chip->reg_lock, flags);
460 chip->current_line = 0;
461 chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
462 snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
463 snd_bt87x_writel(chip, REG_PACKET_LEN,
464 chip->line_bytes | (chip->lines << 16));
465 snd_bt87x_writel(chip, REG_INT_MASK, MY_INTERRUPTS);
466 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
467 spin_unlock_irqrestore(&chip->reg_lock, flags);
471 static int snd_bt87x_stop(bt87x_t *chip)
475 spin_lock_irqsave(&chip->reg_lock, flags);
476 chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
477 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
478 snd_bt87x_writel(chip, REG_INT_MASK, 0);
479 snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
480 spin_unlock_irqrestore(&chip->reg_lock, flags);
484 static int snd_bt87x_trigger(snd_pcm_substream_t *substream, int cmd)
486 bt87x_t *chip = snd_pcm_substream_chip(substream);
489 case SNDRV_PCM_TRIGGER_START:
490 return snd_bt87x_start(chip);
491 case SNDRV_PCM_TRIGGER_STOP:
492 return snd_bt87x_stop(chip);
498 static snd_pcm_uframes_t snd_bt87x_pointer(snd_pcm_substream_t *substream)
500 bt87x_t *chip = snd_pcm_substream_chip(substream);
501 snd_pcm_runtime_t *runtime = substream->runtime;
503 return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
506 static snd_pcm_ops_t snd_bt87x_pcm_ops = {
507 .open = snd_bt87x_pcm_open,
508 .close = snd_bt87x_close,
509 .ioctl = snd_pcm_lib_ioctl,
510 .hw_params = snd_bt87x_hw_params,
511 .hw_free = snd_bt87x_hw_free,
512 .prepare = snd_bt87x_prepare,
513 .trigger = snd_bt87x_trigger,
514 .pointer = snd_bt87x_pointer,
515 .page = snd_pcm_sgbuf_ops_page,
518 static int snd_bt87x_capture_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
520 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
522 info->value.integer.min = 0;
523 info->value.integer.max = 15;
527 static int snd_bt87x_capture_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
529 bt87x_t *chip = snd_kcontrol_chip(kcontrol);
531 value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
535 static int snd_bt87x_capture_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
537 bt87x_t *chip = snd_kcontrol_chip(kcontrol);
542 spin_lock_irqsave(&chip->reg_lock, flags);
543 old_control = chip->reg_control;
544 chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
545 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
546 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
547 changed = old_control != chip->reg_control;
548 spin_unlock_irqrestore(&chip->reg_lock, flags);
552 static snd_kcontrol_new_t snd_bt87x_capture_volume = {
553 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
554 .name = "Capture Volume",
555 .info = snd_bt87x_capture_volume_info,
556 .get = snd_bt87x_capture_volume_get,
557 .put = snd_bt87x_capture_volume_put,
560 static int snd_bt87x_capture_boost_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
562 info->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
564 info->value.integer.min = 0;
565 info->value.integer.max = 1;
569 static int snd_bt87x_capture_boost_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
571 bt87x_t *chip = snd_kcontrol_chip(kcontrol);
573 value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
577 static int snd_bt87x_capture_boost_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
579 bt87x_t *chip = snd_kcontrol_chip(kcontrol);
584 spin_lock_irqsave(&chip->reg_lock, flags);
585 old_control = chip->reg_control;
586 chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
587 | (value->value.integer.value[0] ? CTL_A_G2X : 0);
588 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
589 changed = chip->reg_control != old_control;
590 spin_unlock_irqrestore(&chip->reg_lock, flags);
594 static snd_kcontrol_new_t snd_bt87x_capture_boost = {
595 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
596 .name = "Capture Boost",
597 .info = snd_bt87x_capture_boost_info,
598 .get = snd_bt87x_capture_boost_get,
599 .put = snd_bt87x_capture_boost_put,
602 static int snd_bt87x_capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
604 static char *texts[3] = {"TV Tuner", "FM", "Mic/Line"};
606 info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
608 info->value.enumerated.items = 3;
609 if (info->value.enumerated.item > 2)
610 info->value.enumerated.item = 2;
611 strcpy(info->value.enumerated.name, texts[info->value.enumerated.item]);
615 static int snd_bt87x_capture_source_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
617 bt87x_t *chip = snd_kcontrol_chip(kcontrol);
619 value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
623 static int snd_bt87x_capture_source_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
625 bt87x_t *chip = snd_kcontrol_chip(kcontrol);
630 spin_lock_irqsave(&chip->reg_lock, flags);
631 old_control = chip->reg_control;
632 chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
633 | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
634 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
635 changed = chip->reg_control != old_control;
636 spin_unlock_irqrestore(&chip->reg_lock, flags);
640 static snd_kcontrol_new_t snd_bt87x_capture_source = {
641 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
642 .name = "Capture Source",
643 .info = snd_bt87x_capture_source_info,
644 .get = snd_bt87x_capture_source_get,
645 .put = snd_bt87x_capture_source_put,
648 static int snd_bt87x_free(bt87x_t *chip)
651 snd_bt87x_stop(chip);
653 synchronize_irq(chip->irq);
657 if (chip->res_mmio) {
658 release_resource(chip->res_mmio);
659 kfree_nocheck(chip->res_mmio);
662 free_irq(chip->irq, chip);
663 snd_magic_kfree(chip);
667 static int snd_bt87x_dev_free(snd_device_t *device)
669 bt87x_t *chip = snd_magic_cast(bt87x_t, device->device_data, return -ENXIO);
670 return snd_bt87x_free(chip);
673 static int __devinit snd_bt87x_pcm(bt87x_t *chip, int device, char *name)
678 err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
681 pcm->private_data = chip;
682 strcpy(pcm->name, name);
683 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
684 return snd_pcm_lib_preallocate_pages_for_all(pcm,
685 SNDRV_DMA_TYPE_DEV_SG,
686 snd_dma_pci_data(chip->pci),
688 (255 * 4092 + 1023) & ~1023);
691 static int __devinit snd_bt87x_create(snd_card_t *card,
697 static snd_device_ops_t ops = {
698 .dev_free = snd_bt87x_dev_free
703 err = pci_enable_device(pci);
707 chip = snd_magic_kcalloc(bt87x_t, 0, GFP_KERNEL);
713 spin_lock_init(&chip->reg_lock);
715 chip->res_mmio = request_mem_region(pci_resource_start(pci, 0),
716 pci_resource_len(pci, 0),
718 if (!chip->res_mmio) {
719 snd_bt87x_free(chip);
720 snd_printk(KERN_ERR "cannot allocate io memory\n");
723 chip->mmio = ioremap_nocache(pci_resource_start(pci, 0),
724 pci_resource_len(pci, 0));
726 snd_bt87x_free(chip);
727 snd_printk(KERN_ERR "cannot remap io memory\n");
731 chip->reg_control = CTL_DA_ES2 | CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
732 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
733 snd_bt87x_writel(chip, REG_INT_MASK, 0);
734 snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
736 if (request_irq(pci->irq, snd_bt87x_interrupt, SA_INTERRUPT | SA_SHIRQ,
737 "Bt87x audio", chip)) {
738 snd_bt87x_free(chip);
739 snd_printk(KERN_ERR "cannot grab irq\n");
742 chip->irq = pci->irq;
744 synchronize_irq(chip->irq);
746 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
748 snd_bt87x_free(chip);
751 snd_card_set_dev(card, &pci->dev);
756 static int __devinit snd_bt87x_probe(struct pci_dev *pci,
757 const struct pci_device_id *pci_id)
764 if (dev >= SNDRV_CARDS)
771 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
775 err = snd_bt87x_create(card, pci, &chip);
779 if (digital_rate[dev] > 0)
780 chip->dig_rate = digital_rate[dev];
782 chip->dig_rate = (int)pci_id->driver_data;
784 err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
787 err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
791 err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_volume, chip));
794 err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_boost, chip));
797 err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_source, chip));
801 strcpy(card->driver, "Bt87x");
802 sprintf(card->shortname, "Brooktree Bt%x", pci->device);
803 sprintf(card->longname, "%s at %#lx, irq %i",
804 card->shortname, pci_resource_start(pci, 0), chip->irq);
805 strcpy(card->mixername, "Bt87x");
807 err = snd_card_register(card);
811 pci_set_drvdata(pci, chip);
820 static void __devexit snd_bt87x_remove(struct pci_dev *pci)
822 bt87x_t *chip = snd_magic_cast(bt87x_t, pci_get_drvdata(pci), return);
824 snd_card_free(chip->card);
825 pci_set_drvdata(pci, NULL);
828 #define BT_DEVICE(chip, subvend, subdev, rate) \
829 { .vendor = PCI_VENDOR_ID_BROOKTREE, \
830 .device = PCI_DEVICE_ID_BROOKTREE_##chip, \
831 .subvendor = subvend, .subdevice = subdev, \
832 .driver_data = rate }
834 /* driver_data is the default digital_rate value for that device */
835 static struct pci_device_id snd_bt87x_ids[] = {
836 BT_DEVICE(878, 0x0070, 0xff01, 44100), /* Osprey 200 */
838 /* default entries for 32kHz and generic Bt87x cards */
839 BT_DEVICE(878, PCI_ANY_ID, PCI_ANY_ID, 32000),
840 BT_DEVICE(879, PCI_ANY_ID, PCI_ANY_ID, 32000),
843 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
845 static struct pci_driver driver = {
847 .id_table = snd_bt87x_ids,
848 .probe = snd_bt87x_probe,
849 .remove = __devexit_p(snd_bt87x_remove),
852 static int __init alsa_card_bt87x_init(void)
856 err = pci_module_init(&driver);
859 printk(KERN_ERR "Bt87x soundcard not found or device busy\n");
866 static void __exit alsa_card_bt87x_exit(void)
868 pci_unregister_driver(&driver);
871 module_init(alsa_card_bt87x_init)
872 module_exit(alsa_card_bt87x_exit)
876 /* format is: snd-bt87x=enable,index,id */
878 static int __init alsa_card_bt87x_setup(char *str)
880 static unsigned __initdata nr_dev = 0;
882 if (nr_dev >= SNDRV_CARDS)
884 (void)(get_option(&str,&enable[nr_dev]) == 2 &&
885 get_option(&str,&index[nr_dev]) == 2 &&
886 get_id(&str,&id[nr_dev]) == 2);
891 __setup("snd-bt87x=", alsa_card_bt87x_setup);
893 #endif /* ifndef MODULE */