[PATCH] pci_ids: macros: replace partial with whole symbols
[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] = { [0 ... (SNDRV_CARDS-1)] = 0 }; /* 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 typedef struct snd_bt87x bt87x_t;
151 struct snd_bt87x {
152         snd_card_t *card;
153         struct pci_dev *pci;
154
155         void __iomem *mmio;
156         int irq;
157
158         int dig_rate;
159
160         spinlock_t reg_lock;
161         long opened;
162         snd_pcm_substream_t *substream;
163
164         struct snd_dma_buffer dma_risc;
165         unsigned int line_bytes;
166         unsigned int lines;
167
168         u32 reg_control;
169         u32 interrupt_mask;
170
171         int current_line;
172
173         int pci_parity_errors;
174 };
175
176 enum { DEVICE_DIGITAL, DEVICE_ANALOG };
177
178 static inline u32 snd_bt87x_readl(bt87x_t *chip, u32 reg)
179 {
180         return readl(chip->mmio + reg);
181 }
182
183 static inline void snd_bt87x_writel(bt87x_t *chip, u32 reg, u32 value)
184 {
185         writel(value, chip->mmio + reg);
186 }
187
188 static int snd_bt87x_create_risc(bt87x_t *chip, snd_pcm_substream_t *substream,
189                                  unsigned int periods, unsigned int period_bytes)
190 {
191         struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
192         unsigned int i, offset;
193         u32 *risc;
194
195         if (chip->dma_risc.area == NULL) {
196                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
197                                         PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
198                         return -ENOMEM;
199         }
200         risc = (u32 *)chip->dma_risc.area;
201         offset = 0;
202         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
203         *risc++ = cpu_to_le32(0);
204         for (i = 0; i < periods; ++i) {
205                 u32 rest;
206
207                 rest = period_bytes;
208                 do {
209                         u32 cmd, len;
210
211                         len = PAGE_SIZE - (offset % PAGE_SIZE);
212                         if (len > rest)
213                                 len = rest;
214                         cmd = RISC_WRITE | len;
215                         if (rest == period_bytes) {
216                                 u32 block = i * 16 / periods;
217                                 cmd |= RISC_SOL;
218                                 cmd |= block << RISC_SET_STATUS_SHIFT;
219                                 cmd |= (~block & 0xf) << RISC_RESET_STATUS_SHIFT;
220                         }
221                         if (len == rest)
222                                 cmd |= RISC_EOL | RISC_IRQ;
223                         *risc++ = cpu_to_le32(cmd);
224                         *risc++ = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, offset));
225                         offset += len;
226                         rest -= len;
227                 } while (rest > 0);
228         }
229         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO);
230         *risc++ = cpu_to_le32(0);
231         *risc++ = cpu_to_le32(RISC_JUMP);
232         *risc++ = cpu_to_le32(chip->dma_risc.addr);
233         chip->line_bytes = period_bytes;
234         chip->lines = periods;
235         return 0;
236 }
237
238 static void snd_bt87x_free_risc(bt87x_t *chip)
239 {
240         if (chip->dma_risc.area) {
241                 snd_dma_free_pages(&chip->dma_risc);
242                 chip->dma_risc.area = NULL;
243         }
244 }
245
246 static void snd_bt87x_pci_error(bt87x_t *chip, unsigned int status)
247 {
248         u16 pci_status;
249
250         pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
251         pci_status &= PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
252                 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
253                 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY;
254         pci_write_config_word(chip->pci, PCI_STATUS, pci_status);
255         if (pci_status != PCI_STATUS_DETECTED_PARITY)
256                 snd_printk(KERN_ERR "Aieee - PCI error! status %#08x, PCI status %#04x\n",
257                            status & ERROR_INTERRUPTS, pci_status);
258         else {
259                 snd_printk(KERN_ERR "Aieee - PCI parity error detected!\n");
260                 /* error 'handling' similar to aic7xxx_pci.c: */
261                 chip->pci_parity_errors++;
262                 if (chip->pci_parity_errors > 20) {
263                         snd_printk(KERN_ERR "Too many PCI parity errors observed.\n");
264                         snd_printk(KERN_ERR "Some device on this bus is generating bad parity.\n");
265                         snd_printk(KERN_ERR "This is an error *observed by*, not *generated by*, this card.\n");
266                         snd_printk(KERN_ERR "PCI parity error checking has been disabled.\n");
267                         chip->interrupt_mask &= ~(INT_PPERR | INT_RIPERR);
268                         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
269                 }
270         }
271 }
272
273 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id, struct pt_regs *regs)
274 {
275         bt87x_t *chip = dev_id;
276         unsigned int status, irq_status;
277
278         status = snd_bt87x_readl(chip, REG_INT_STAT);
279         irq_status = status & chip->interrupt_mask;
280         if (!irq_status)
281                 return IRQ_NONE;
282         snd_bt87x_writel(chip, REG_INT_STAT, irq_status);
283
284         if (irq_status & ERROR_INTERRUPTS) {
285                 if (irq_status & (INT_FBUS | INT_FTRGT))
286                         snd_printk(KERN_WARNING "FIFO overrun, status %#08x\n", status);
287                 if (irq_status & INT_OCERR)
288                         snd_printk(KERN_ERR "internal RISC error, status %#08x\n", status);
289                 if (irq_status & (INT_PPERR | INT_RIPERR | INT_PABORT))
290                         snd_bt87x_pci_error(chip, irq_status);
291         }
292         if ((irq_status & INT_RISCI) && (chip->reg_control & CTL_ACAP_EN)) {
293                 int current_block, irq_block;
294
295                 /* assume that exactly one line has been recorded */
296                 chip->current_line = (chip->current_line + 1) % chip->lines;
297                 /* but check if some interrupts have been skipped */
298                 current_block = chip->current_line * 16 / chip->lines;
299                 irq_block = status >> INT_RISCS_SHIFT;
300                 if (current_block != irq_block)
301                         chip->current_line = (irq_block * chip->lines + 15) / 16;
302
303                 snd_pcm_period_elapsed(chip->substream);
304         }
305         return IRQ_HANDLED;
306 }
307
308 static snd_pcm_hardware_t snd_bt87x_digital_hw = {
309         .info = SNDRV_PCM_INFO_MMAP |
310                 SNDRV_PCM_INFO_INTERLEAVED |
311                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
312                 SNDRV_PCM_INFO_MMAP_VALID,
313         .formats = SNDRV_PCM_FMTBIT_S16_LE,
314         .rates = 0, /* set at runtime */
315         .channels_min = 2,
316         .channels_max = 2,
317         .buffer_bytes_max = 255 * 4092,
318         .period_bytes_min = 32,
319         .period_bytes_max = 4092,
320         .periods_min = 2,
321         .periods_max = 255,
322 };
323
324 static snd_pcm_hardware_t snd_bt87x_analog_hw = {
325         .info = SNDRV_PCM_INFO_MMAP |
326                 SNDRV_PCM_INFO_INTERLEAVED |
327                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
328                 SNDRV_PCM_INFO_MMAP_VALID,
329         .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
330         .rates = SNDRV_PCM_RATE_KNOT,
331         .rate_min = ANALOG_CLOCK / CLOCK_DIV_MAX,
332         .rate_max = ANALOG_CLOCK / CLOCK_DIV_MIN,
333         .channels_min = 1,
334         .channels_max = 1,
335         .buffer_bytes_max = 255 * 4092,
336         .period_bytes_min = 32,
337         .period_bytes_max = 4092,
338         .periods_min = 2,
339         .periods_max = 255,
340 };
341
342 static int snd_bt87x_set_digital_hw(bt87x_t *chip, snd_pcm_runtime_t *runtime)
343 {
344         static struct {
345                 int rate;
346                 unsigned int bit;
347         } ratebits[] = {
348                 {8000, SNDRV_PCM_RATE_8000},
349                 {11025, SNDRV_PCM_RATE_11025},
350                 {16000, SNDRV_PCM_RATE_16000},
351                 {22050, SNDRV_PCM_RATE_22050},
352                 {32000, SNDRV_PCM_RATE_32000},
353                 {44100, SNDRV_PCM_RATE_44100},
354                 {48000, SNDRV_PCM_RATE_48000}
355         };
356         int i;
357
358         chip->reg_control |= CTL_DA_IOM_DA;
359         runtime->hw = snd_bt87x_digital_hw;
360         runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
361         for (i = 0; i < ARRAY_SIZE(ratebits); ++i)
362                 if (chip->dig_rate == ratebits[i].rate) {
363                         runtime->hw.rates = ratebits[i].bit;
364                         break;
365                 }
366         runtime->hw.rate_min = chip->dig_rate;
367         runtime->hw.rate_max = chip->dig_rate;
368         return 0;
369 }
370
371 static int snd_bt87x_set_analog_hw(bt87x_t *chip, snd_pcm_runtime_t *runtime)
372 {
373         static ratnum_t analog_clock = {
374                 .num = ANALOG_CLOCK,
375                 .den_min = CLOCK_DIV_MIN,
376                 .den_max = CLOCK_DIV_MAX,
377                 .den_step = 1
378         };
379         static snd_pcm_hw_constraint_ratnums_t constraint_rates = {
380                 .nrats = 1,
381                 .rats = &analog_clock
382         };
383
384         chip->reg_control &= ~CTL_DA_IOM_DA;
385         runtime->hw = snd_bt87x_analog_hw;
386         return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
387                                              &constraint_rates);
388 }
389
390 static int snd_bt87x_pcm_open(snd_pcm_substream_t *substream)
391 {
392         bt87x_t *chip = snd_pcm_substream_chip(substream);
393         snd_pcm_runtime_t *runtime = substream->runtime;
394         int err;
395
396         if (test_and_set_bit(0, &chip->opened))
397                 return -EBUSY;
398
399         if (substream->pcm->device == DEVICE_DIGITAL)
400                 err = snd_bt87x_set_digital_hw(chip, runtime);
401         else
402                 err = snd_bt87x_set_analog_hw(chip, runtime);
403         if (err < 0)
404                 goto _error;
405
406         err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
407         if (err < 0)
408                 goto _error;
409
410         chip->substream = substream;
411         return 0;
412
413 _error:
414         clear_bit(0, &chip->opened);
415         smp_mb__after_clear_bit();
416         return err;
417 }
418
419 static int snd_bt87x_close(snd_pcm_substream_t *substream)
420 {
421         bt87x_t *chip = snd_pcm_substream_chip(substream);
422
423         chip->substream = NULL;
424         clear_bit(0, &chip->opened);
425         smp_mb__after_clear_bit();
426         return 0;
427 }
428
429 static int snd_bt87x_hw_params(snd_pcm_substream_t *substream,
430                                snd_pcm_hw_params_t *hw_params)
431 {
432         bt87x_t *chip = snd_pcm_substream_chip(substream);
433         int err;
434
435         err = snd_pcm_lib_malloc_pages(substream,
436                                        params_buffer_bytes(hw_params));
437         if (err < 0)
438                 return err;
439         return snd_bt87x_create_risc(chip, substream,
440                                      params_periods(hw_params),
441                                      params_period_bytes(hw_params));
442 }
443
444 static int snd_bt87x_hw_free(snd_pcm_substream_t *substream)
445 {
446         bt87x_t *chip = snd_pcm_substream_chip(substream);
447
448         snd_bt87x_free_risc(chip);
449         snd_pcm_lib_free_pages(substream);
450         return 0;
451 }
452
453 static int snd_bt87x_prepare(snd_pcm_substream_t *substream)
454 {
455         bt87x_t *chip = snd_pcm_substream_chip(substream);
456         snd_pcm_runtime_t *runtime = substream->runtime;
457         int decimation;
458
459         spin_lock_irq(&chip->reg_lock);
460         chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
461         decimation = (ANALOG_CLOCK + runtime->rate / 4) / runtime->rate;
462         chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
463         if (runtime->format == SNDRV_PCM_FORMAT_S8)
464                 chip->reg_control |= CTL_DA_SBR;
465         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
466         spin_unlock_irq(&chip->reg_lock);
467         return 0;
468 }
469
470 static int snd_bt87x_start(bt87x_t *chip)
471 {
472         spin_lock(&chip->reg_lock);
473         chip->current_line = 0;
474         chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
475         snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
476         snd_bt87x_writel(chip, REG_PACKET_LEN,
477                          chip->line_bytes | (chip->lines << 16));
478         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
479         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
480         spin_unlock(&chip->reg_lock);
481         return 0;
482 }
483
484 static int snd_bt87x_stop(bt87x_t *chip)
485 {
486         spin_lock(&chip->reg_lock);
487         chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
488         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
489         snd_bt87x_writel(chip, REG_INT_MASK, 0);
490         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
491         spin_unlock(&chip->reg_lock);
492         return 0;
493 }
494
495 static int snd_bt87x_trigger(snd_pcm_substream_t *substream, int cmd)
496 {
497         bt87x_t *chip = snd_pcm_substream_chip(substream);
498
499         switch (cmd) {
500         case SNDRV_PCM_TRIGGER_START:
501                 return snd_bt87x_start(chip);
502         case SNDRV_PCM_TRIGGER_STOP:
503                 return snd_bt87x_stop(chip);
504         default:
505                 return -EINVAL;
506         }
507 }
508
509 static snd_pcm_uframes_t snd_bt87x_pointer(snd_pcm_substream_t *substream)
510 {
511         bt87x_t *chip = snd_pcm_substream_chip(substream);
512         snd_pcm_runtime_t *runtime = substream->runtime;
513
514         return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
515 }
516
517 static snd_pcm_ops_t snd_bt87x_pcm_ops = {
518         .open = snd_bt87x_pcm_open,
519         .close = snd_bt87x_close,
520         .ioctl = snd_pcm_lib_ioctl,
521         .hw_params = snd_bt87x_hw_params,
522         .hw_free = snd_bt87x_hw_free,
523         .prepare = snd_bt87x_prepare,
524         .trigger = snd_bt87x_trigger,
525         .pointer = snd_bt87x_pointer,
526         .page = snd_pcm_sgbuf_ops_page,
527 };
528
529 static int snd_bt87x_capture_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
530 {
531         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
532         info->count = 1;
533         info->value.integer.min = 0;
534         info->value.integer.max = 15;
535         return 0;
536 }
537
538 static int snd_bt87x_capture_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
539 {
540         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
541
542         value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
543         return 0;
544 }
545
546 static int snd_bt87x_capture_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
547 {
548         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
549         u32 old_control;
550         int changed;
551
552         spin_lock_irq(&chip->reg_lock);
553         old_control = chip->reg_control;
554         chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
555                 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
556         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
557         changed = old_control != chip->reg_control;
558         spin_unlock_irq(&chip->reg_lock);
559         return changed;
560 }
561
562 static snd_kcontrol_new_t snd_bt87x_capture_volume = {
563         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
564         .name = "Capture Volume",
565         .info = snd_bt87x_capture_volume_info,
566         .get = snd_bt87x_capture_volume_get,
567         .put = snd_bt87x_capture_volume_put,
568 };
569
570 static int snd_bt87x_capture_boost_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
571 {
572         info->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
573         info->count = 1;
574         info->value.integer.min = 0;
575         info->value.integer.max = 1;
576         return 0;
577 }
578
579 static int snd_bt87x_capture_boost_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
580 {
581         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
582
583         value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
584         return 0;
585 }
586
587 static int snd_bt87x_capture_boost_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
588 {
589         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
590         u32 old_control;
591         int changed;
592
593         spin_lock_irq(&chip->reg_lock);
594         old_control = chip->reg_control;
595         chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
596                 | (value->value.integer.value[0] ? CTL_A_G2X : 0);
597         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
598         changed = chip->reg_control != old_control;
599         spin_unlock_irq(&chip->reg_lock);
600         return changed;
601 }
602
603 static snd_kcontrol_new_t snd_bt87x_capture_boost = {
604         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
605         .name = "Capture Boost",
606         .info = snd_bt87x_capture_boost_info,
607         .get = snd_bt87x_capture_boost_get,
608         .put = snd_bt87x_capture_boost_put,
609 };
610
611 static int snd_bt87x_capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
612 {
613         static char *texts[3] = {"TV Tuner", "FM", "Mic/Line"};
614
615         info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
616         info->count = 1;
617         info->value.enumerated.items = 3;
618         if (info->value.enumerated.item > 2)
619                 info->value.enumerated.item = 2;
620         strcpy(info->value.enumerated.name, texts[info->value.enumerated.item]);
621         return 0;
622 }
623
624 static int snd_bt87x_capture_source_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
625 {
626         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
627
628         value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
629         return 0;
630 }
631
632 static int snd_bt87x_capture_source_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
633 {
634         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
635         u32 old_control;
636         int changed;
637
638         spin_lock_irq(&chip->reg_lock);
639         old_control = chip->reg_control;
640         chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
641                 | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
642         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
643         changed = chip->reg_control != old_control;
644         spin_unlock_irq(&chip->reg_lock);
645         return changed;
646 }
647
648 static snd_kcontrol_new_t snd_bt87x_capture_source = {
649         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
650         .name = "Capture Source",
651         .info = snd_bt87x_capture_source_info,
652         .get = snd_bt87x_capture_source_get,
653         .put = snd_bt87x_capture_source_put,
654 };
655
656 static int snd_bt87x_free(bt87x_t *chip)
657 {
658         if (chip->mmio) {
659                 snd_bt87x_stop(chip);
660                 if (chip->irq >= 0)
661                         synchronize_irq(chip->irq);
662
663                 iounmap(chip->mmio);
664         }
665         if (chip->irq >= 0)
666                 free_irq(chip->irq, chip);
667         pci_release_regions(chip->pci);
668         pci_disable_device(chip->pci);
669         kfree(chip);
670         return 0;
671 }
672
673 static int snd_bt87x_dev_free(snd_device_t *device)
674 {
675         bt87x_t *chip = device->device_data;
676         return snd_bt87x_free(chip);
677 }
678
679 static int __devinit snd_bt87x_pcm(bt87x_t *chip, int device, char *name)
680 {
681         int err;
682         snd_pcm_t *pcm;
683
684         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
685         if (err < 0)
686                 return err;
687         pcm->private_data = chip;
688         strcpy(pcm->name, name);
689         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
690         return snd_pcm_lib_preallocate_pages_for_all(pcm,
691                                                      SNDRV_DMA_TYPE_DEV_SG,
692                                                      snd_dma_pci_data(chip->pci),
693                                                         128 * 1024,
694                                                         (255 * 4092 + 1023) & ~1023);
695 }
696
697 static int __devinit snd_bt87x_create(snd_card_t *card,
698                                       struct pci_dev *pci,
699                                       bt87x_t **rchip)
700 {
701         bt87x_t *chip;
702         int err;
703         static snd_device_ops_t ops = {
704                 .dev_free = snd_bt87x_dev_free
705         };
706
707         *rchip = NULL;
708
709         err = pci_enable_device(pci);
710         if (err < 0)
711                 return err;
712
713         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
714         if (!chip) {
715                 pci_disable_device(pci);
716                 return -ENOMEM;
717         }
718         chip->card = card;
719         chip->pci = pci;
720         chip->irq = -1;
721         spin_lock_init(&chip->reg_lock);
722
723         if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) {
724                 kfree(chip);
725                 pci_disable_device(pci);
726                 return err;
727         }
728         chip->mmio = ioremap_nocache(pci_resource_start(pci, 0),
729                                      pci_resource_len(pci, 0));
730         if (!chip->mmio) {
731                 snd_bt87x_free(chip);
732                 snd_printk(KERN_ERR "cannot remap io memory\n");
733                 return -ENOMEM;
734         }
735
736         chip->reg_control = CTL_DA_ES2 | CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
737         chip->interrupt_mask = MY_INTERRUPTS;
738         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
739         snd_bt87x_writel(chip, REG_INT_MASK, 0);
740         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
741
742         if (request_irq(pci->irq, snd_bt87x_interrupt, SA_INTERRUPT | SA_SHIRQ,
743                         "Bt87x audio", chip)) {
744                 snd_bt87x_free(chip);
745                 snd_printk(KERN_ERR "cannot grab irq\n");
746                 return -EBUSY;
747         }
748         chip->irq = pci->irq;
749         pci_set_master(pci);
750         synchronize_irq(chip->irq);
751
752         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
753         if (err < 0) {
754                 snd_bt87x_free(chip);
755                 return err;
756         }
757         snd_card_set_dev(card, &pci->dev);
758         *rchip = chip;
759         return 0;
760 }
761
762 #define BT_DEVICE(chip, subvend, subdev, rate) \
763         { .vendor = PCI_VENDOR_ID_BROOKTREE, \
764           .device = chip, \
765           .subvendor = subvend, .subdevice = subdev, \
766           .driver_data = rate }
767
768 /* driver_data is the default digital_rate value for that device */
769 static struct pci_device_id snd_bt87x_ids[] = {
770         /* Hauppauge WinTV series */
771         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0x13eb, 32000),
772         /* Hauppauge WinTV series */
773         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, 0x0070, 0x13eb, 32000),
774         /* Viewcast Osprey 200 */
775         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff01, 44100),
776         { }
777 };
778 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
779
780 /* cards known not to have audio
781  * (DVB cards use the audio function to transfer MPEG data) */
782 static struct {
783         unsigned short subvendor, subdevice;
784 } blacklist[] __devinitdata = {
785         {0x0071, 0x0101}, /* Nebula Electronics DigiTV */
786         {0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */
787         {0x1461, 0x0761}, /* AVermedia AverTV DVB-T */
788         {0x1461, 0x0771}, /* AVermedia DVB-T 771 */
789         {0x1822, 0x0001}, /* Twinhan VisionPlus DVB-T */
790         {0x18ac, 0xdb10}, /* DVICO FusionHDTV DVB-T Lite */
791         {0x270f, 0xfc00}, /* Chaintech Digitop DST-1000 DVB-S */
792 };
793
794 static struct pci_driver driver;
795
796 /* return the rate of the card, or a negative value if it's blacklisted */
797 static int __devinit snd_bt87x_detect_card(struct pci_dev *pci)
798 {
799         int i;
800         const struct pci_device_id *supported;
801
802         supported = pci_match_device(&driver, pci);
803         if (supported)
804                 return supported->driver_data;
805
806         for (i = 0; i < ARRAY_SIZE(blacklist); ++i)
807                 if (blacklist[i].subvendor == pci->subsystem_vendor &&
808                     blacklist[i].subdevice == pci->subsystem_device) {
809                         snd_printdd(KERN_INFO "card %#04x:%#04x has no audio\n",
810                                     pci->subsystem_vendor, pci->subsystem_device);
811                         return -EBUSY;
812                 }
813
814         snd_printk(KERN_INFO "unknown card %#04x:%#04x, using default rate 32000\n",
815                    pci->subsystem_vendor, pci->subsystem_device);
816         snd_printk(KERN_DEBUG "please mail id, board name, and, "
817                    "if it works, the correct digital_rate option to "
818                    "<alsa-devel@lists.sf.net>\n");
819         return 32000; /* default rate */
820 }
821
822 static int __devinit snd_bt87x_probe(struct pci_dev *pci,
823                                      const struct pci_device_id *pci_id)
824 {
825         static int dev;
826         snd_card_t *card;
827         bt87x_t *chip;
828         int err, rate;
829
830         rate = pci_id->driver_data;
831         if (! rate)
832                 if ((rate = snd_bt87x_detect_card(pci)) <= 0)
833                         return -ENODEV;
834
835         if (dev >= SNDRV_CARDS)
836                 return -ENODEV;
837         if (!enable[dev]) {
838                 ++dev;
839                 return -ENOENT;
840         }
841
842         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
843         if (!card)
844                 return -ENOMEM;
845
846         err = snd_bt87x_create(card, pci, &chip);
847         if (err < 0)
848                 goto _error;
849
850         if (digital_rate[dev] > 0)
851                 chip->dig_rate = digital_rate[dev];
852         else
853                 chip->dig_rate = rate;
854
855         err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
856         if (err < 0)
857                 goto _error;
858         err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
859         if (err < 0)
860                 goto _error;
861
862         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_volume, chip));
863         if (err < 0)
864                 goto _error;
865         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_boost, chip));
866         if (err < 0)
867                 goto _error;
868         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_source, chip));
869         if (err < 0)
870                 goto _error;
871
872         strcpy(card->driver, "Bt87x");
873         sprintf(card->shortname, "Brooktree Bt%x", pci->device);
874         sprintf(card->longname, "%s at %#lx, irq %i",
875                 card->shortname, pci_resource_start(pci, 0), chip->irq);
876         strcpy(card->mixername, "Bt87x");
877
878         err = snd_card_register(card);
879         if (err < 0)
880                 goto _error;
881
882         pci_set_drvdata(pci, card);
883         ++dev;
884         return 0;
885
886 _error:
887         snd_card_free(card);
888         return err;
889 }
890
891 static void __devexit snd_bt87x_remove(struct pci_dev *pci)
892 {
893         snd_card_free(pci_get_drvdata(pci));
894         pci_set_drvdata(pci, NULL);
895 }
896
897 /* default entries for all Bt87x cards - it's not exported */
898 /* driver_data is set to 0 to call detection */
899 static struct pci_device_id snd_bt87x_default_ids[] = {
900         BT_DEVICE(878, PCI_ANY_ID, PCI_ANY_ID, 0),
901         BT_DEVICE(879, PCI_ANY_ID, PCI_ANY_ID, 0),
902         { }
903 };
904
905 static struct pci_driver driver = {
906         .name = "Bt87x",
907         .owner = THIS_MODULE,
908         .id_table = snd_bt87x_ids,
909         .probe = snd_bt87x_probe,
910         .remove = __devexit_p(snd_bt87x_remove),
911 };
912
913 static int __init alsa_card_bt87x_init(void)
914 {
915         if (load_all)
916                 driver.id_table = snd_bt87x_default_ids;
917         return pci_register_driver(&driver);
918 }
919
920 static void __exit alsa_card_bt87x_exit(void)
921 {
922         pci_unregister_driver(&driver);
923 }
924
925 module_init(alsa_card_bt87x_init)
926 module_exit(alsa_card_bt87x_exit)