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