[ALSA] bt848 - added Leadtek Winfast tv 2000xp delux to whitelist
[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 struct snd_bt87x {
151         struct snd_card *card;
152         struct pci_dev *pci;
153
154         void __iomem *mmio;
155         int irq;
156
157         int dig_rate;
158
159         spinlock_t reg_lock;
160         long opened;
161         struct snd_pcm_substream *substream;
162
163         struct snd_dma_buffer dma_risc;
164         unsigned int line_bytes;
165         unsigned int lines;
166
167         u32 reg_control;
168         u32 interrupt_mask;
169
170         int current_line;
171
172         int pci_parity_errors;
173 };
174
175 enum { DEVICE_DIGITAL, DEVICE_ANALOG };
176
177 static inline u32 snd_bt87x_readl(struct snd_bt87x *chip, u32 reg)
178 {
179         return readl(chip->mmio + reg);
180 }
181
182 static inline void snd_bt87x_writel(struct snd_bt87x *chip, u32 reg, u32 value)
183 {
184         writel(value, chip->mmio + reg);
185 }
186
187 static int snd_bt87x_create_risc(struct snd_bt87x *chip, struct snd_pcm_substream *substream,
188                                  unsigned int periods, unsigned int period_bytes)
189 {
190         struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
191         unsigned int i, offset;
192         u32 *risc;
193
194         if (chip->dma_risc.area == NULL) {
195                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
196                                         PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
197                         return -ENOMEM;
198         }
199         risc = (u32 *)chip->dma_risc.area;
200         offset = 0;
201         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
202         *risc++ = cpu_to_le32(0);
203         for (i = 0; i < periods; ++i) {
204                 u32 rest;
205
206                 rest = period_bytes;
207                 do {
208                         u32 cmd, len;
209
210                         len = PAGE_SIZE - (offset % PAGE_SIZE);
211                         if (len > rest)
212                                 len = rest;
213                         cmd = RISC_WRITE | len;
214                         if (rest == period_bytes) {
215                                 u32 block = i * 16 / periods;
216                                 cmd |= RISC_SOL;
217                                 cmd |= block << RISC_SET_STATUS_SHIFT;
218                                 cmd |= (~block & 0xf) << RISC_RESET_STATUS_SHIFT;
219                         }
220                         if (len == rest)
221                                 cmd |= RISC_EOL | RISC_IRQ;
222                         *risc++ = cpu_to_le32(cmd);
223                         *risc++ = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, offset));
224                         offset += len;
225                         rest -= len;
226                 } while (rest > 0);
227         }
228         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO);
229         *risc++ = cpu_to_le32(0);
230         *risc++ = cpu_to_le32(RISC_JUMP);
231         *risc++ = cpu_to_le32(chip->dma_risc.addr);
232         chip->line_bytes = period_bytes;
233         chip->lines = periods;
234         return 0;
235 }
236
237 static void snd_bt87x_free_risc(struct snd_bt87x *chip)
238 {
239         if (chip->dma_risc.area) {
240                 snd_dma_free_pages(&chip->dma_risc);
241                 chip->dma_risc.area = NULL;
242         }
243 }
244
245 static void snd_bt87x_pci_error(struct snd_bt87x *chip, unsigned int status)
246 {
247         u16 pci_status;
248
249         pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
250         pci_status &= PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
251                 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
252                 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY;
253         pci_write_config_word(chip->pci, PCI_STATUS, pci_status);
254         if (pci_status != PCI_STATUS_DETECTED_PARITY)
255                 snd_printk(KERN_ERR "Aieee - PCI error! status %#08x, PCI status %#04x\n",
256                            status & ERROR_INTERRUPTS, pci_status);
257         else {
258                 snd_printk(KERN_ERR "Aieee - PCI parity error detected!\n");
259                 /* error 'handling' similar to aic7xxx_pci.c: */
260                 chip->pci_parity_errors++;
261                 if (chip->pci_parity_errors > 20) {
262                         snd_printk(KERN_ERR "Too many PCI parity errors observed.\n");
263                         snd_printk(KERN_ERR "Some device on this bus is generating bad parity.\n");
264                         snd_printk(KERN_ERR "This is an error *observed by*, not *generated by*, this card.\n");
265                         snd_printk(KERN_ERR "PCI parity error checking has been disabled.\n");
266                         chip->interrupt_mask &= ~(INT_PPERR | INT_RIPERR);
267                         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
268                 }
269         }
270 }
271
272 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id, struct pt_regs *regs)
273 {
274         struct snd_bt87x *chip = dev_id;
275         unsigned int status, irq_status;
276
277         status = snd_bt87x_readl(chip, REG_INT_STAT);
278         irq_status = status & chip->interrupt_mask;
279         if (!irq_status)
280                 return IRQ_NONE;
281         snd_bt87x_writel(chip, REG_INT_STAT, irq_status);
282
283         if (irq_status & ERROR_INTERRUPTS) {
284                 if (irq_status & (INT_FBUS | INT_FTRGT))
285                         snd_printk(KERN_WARNING "FIFO overrun, status %#08x\n", status);
286                 if (irq_status & INT_OCERR)
287                         snd_printk(KERN_ERR "internal RISC error, status %#08x\n", status);
288                 if (irq_status & (INT_PPERR | INT_RIPERR | INT_PABORT))
289                         snd_bt87x_pci_error(chip, irq_status);
290         }
291         if ((irq_status & INT_RISCI) && (chip->reg_control & CTL_ACAP_EN)) {
292                 int current_block, irq_block;
293
294                 /* assume that exactly one line has been recorded */
295                 chip->current_line = (chip->current_line + 1) % chip->lines;
296                 /* but check if some interrupts have been skipped */
297                 current_block = chip->current_line * 16 / chip->lines;
298                 irq_block = status >> INT_RISCS_SHIFT;
299                 if (current_block != irq_block)
300                         chip->current_line = (irq_block * chip->lines + 15) / 16;
301
302                 snd_pcm_period_elapsed(chip->substream);
303         }
304         return IRQ_HANDLED;
305 }
306
307 static struct snd_pcm_hardware snd_bt87x_digital_hw = {
308         .info = SNDRV_PCM_INFO_MMAP |
309                 SNDRV_PCM_INFO_INTERLEAVED |
310                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
311                 SNDRV_PCM_INFO_MMAP_VALID,
312         .formats = SNDRV_PCM_FMTBIT_S16_LE,
313         .rates = 0, /* set at runtime */
314         .channels_min = 2,
315         .channels_max = 2,
316         .buffer_bytes_max = 255 * 4092,
317         .period_bytes_min = 32,
318         .period_bytes_max = 4092,
319         .periods_min = 2,
320         .periods_max = 255,
321 };
322
323 static struct snd_pcm_hardware snd_bt87x_analog_hw = {
324         .info = SNDRV_PCM_INFO_MMAP |
325                 SNDRV_PCM_INFO_INTERLEAVED |
326                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
327                 SNDRV_PCM_INFO_MMAP_VALID,
328         .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
329         .rates = SNDRV_PCM_RATE_KNOT,
330         .rate_min = ANALOG_CLOCK / CLOCK_DIV_MAX,
331         .rate_max = ANALOG_CLOCK / CLOCK_DIV_MIN,
332         .channels_min = 1,
333         .channels_max = 1,
334         .buffer_bytes_max = 255 * 4092,
335         .period_bytes_min = 32,
336         .period_bytes_max = 4092,
337         .periods_min = 2,
338         .periods_max = 255,
339 };
340
341 static int snd_bt87x_set_digital_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
342 {
343         static struct {
344                 int rate;
345                 unsigned int bit;
346         } ratebits[] = {
347                 {8000, SNDRV_PCM_RATE_8000},
348                 {11025, SNDRV_PCM_RATE_11025},
349                 {16000, SNDRV_PCM_RATE_16000},
350                 {22050, SNDRV_PCM_RATE_22050},
351                 {32000, SNDRV_PCM_RATE_32000},
352                 {44100, SNDRV_PCM_RATE_44100},
353                 {48000, SNDRV_PCM_RATE_48000}
354         };
355         int i;
356
357         chip->reg_control |= CTL_DA_IOM_DA;
358         runtime->hw = snd_bt87x_digital_hw;
359         runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
360         for (i = 0; i < ARRAY_SIZE(ratebits); ++i)
361                 if (chip->dig_rate == ratebits[i].rate) {
362                         runtime->hw.rates = ratebits[i].bit;
363                         break;
364                 }
365         runtime->hw.rate_min = chip->dig_rate;
366         runtime->hw.rate_max = chip->dig_rate;
367         return 0;
368 }
369
370 static int snd_bt87x_set_analog_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
371 {
372         static struct snd_ratnum analog_clock = {
373                 .num = ANALOG_CLOCK,
374                 .den_min = CLOCK_DIV_MIN,
375                 .den_max = CLOCK_DIV_MAX,
376                 .den_step = 1
377         };
378         static struct snd_pcm_hw_constraint_ratnums constraint_rates = {
379                 .nrats = 1,
380                 .rats = &analog_clock
381         };
382
383         chip->reg_control &= ~CTL_DA_IOM_DA;
384         runtime->hw = snd_bt87x_analog_hw;
385         return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
386                                              &constraint_rates);
387 }
388
389 static int snd_bt87x_pcm_open(struct snd_pcm_substream *substream)
390 {
391         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
392         struct snd_pcm_runtime *runtime = substream->runtime;
393         int err;
394
395         if (test_and_set_bit(0, &chip->opened))
396                 return -EBUSY;
397
398         if (substream->pcm->device == DEVICE_DIGITAL)
399                 err = snd_bt87x_set_digital_hw(chip, runtime);
400         else
401                 err = snd_bt87x_set_analog_hw(chip, runtime);
402         if (err < 0)
403                 goto _error;
404
405         err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
406         if (err < 0)
407                 goto _error;
408
409         chip->substream = substream;
410         return 0;
411
412 _error:
413         clear_bit(0, &chip->opened);
414         smp_mb__after_clear_bit();
415         return err;
416 }
417
418 static int snd_bt87x_close(struct snd_pcm_substream *substream)
419 {
420         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
421
422         chip->substream = NULL;
423         clear_bit(0, &chip->opened);
424         smp_mb__after_clear_bit();
425         return 0;
426 }
427
428 static int snd_bt87x_hw_params(struct snd_pcm_substream *substream,
429                                struct snd_pcm_hw_params *hw_params)
430 {
431         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
432         int err;
433
434         err = snd_pcm_lib_malloc_pages(substream,
435                                        params_buffer_bytes(hw_params));
436         if (err < 0)
437                 return err;
438         return snd_bt87x_create_risc(chip, substream,
439                                      params_periods(hw_params),
440                                      params_period_bytes(hw_params));
441 }
442
443 static int snd_bt87x_hw_free(struct snd_pcm_substream *substream)
444 {
445         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
446
447         snd_bt87x_free_risc(chip);
448         snd_pcm_lib_free_pages(substream);
449         return 0;
450 }
451
452 static int snd_bt87x_prepare(struct snd_pcm_substream *substream)
453 {
454         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
455         struct snd_pcm_runtime *runtime = substream->runtime;
456         int decimation;
457
458         spin_lock_irq(&chip->reg_lock);
459         chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
460         decimation = (ANALOG_CLOCK + runtime->rate / 4) / runtime->rate;
461         chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
462         if (runtime->format == SNDRV_PCM_FORMAT_S8)
463                 chip->reg_control |= CTL_DA_SBR;
464         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
465         spin_unlock_irq(&chip->reg_lock);
466         return 0;
467 }
468
469 static int snd_bt87x_start(struct snd_bt87x *chip)
470 {
471         spin_lock(&chip->reg_lock);
472         chip->current_line = 0;
473         chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
474         snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
475         snd_bt87x_writel(chip, REG_PACKET_LEN,
476                          chip->line_bytes | (chip->lines << 16));
477         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
478         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
479         spin_unlock(&chip->reg_lock);
480         return 0;
481 }
482
483 static int snd_bt87x_stop(struct snd_bt87x *chip)
484 {
485         spin_lock(&chip->reg_lock);
486         chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
487         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
488         snd_bt87x_writel(chip, REG_INT_MASK, 0);
489         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
490         spin_unlock(&chip->reg_lock);
491         return 0;
492 }
493
494 static int snd_bt87x_trigger(struct snd_pcm_substream *substream, int cmd)
495 {
496         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
497
498         switch (cmd) {
499         case SNDRV_PCM_TRIGGER_START:
500                 return snd_bt87x_start(chip);
501         case SNDRV_PCM_TRIGGER_STOP:
502                 return snd_bt87x_stop(chip);
503         default:
504                 return -EINVAL;
505         }
506 }
507
508 static snd_pcm_uframes_t snd_bt87x_pointer(struct snd_pcm_substream *substream)
509 {
510         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
511         struct snd_pcm_runtime *runtime = substream->runtime;
512
513         return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
514 }
515
516 static struct snd_pcm_ops snd_bt87x_pcm_ops = {
517         .open = snd_bt87x_pcm_open,
518         .close = snd_bt87x_close,
519         .ioctl = snd_pcm_lib_ioctl,
520         .hw_params = snd_bt87x_hw_params,
521         .hw_free = snd_bt87x_hw_free,
522         .prepare = snd_bt87x_prepare,
523         .trigger = snd_bt87x_trigger,
524         .pointer = snd_bt87x_pointer,
525         .page = snd_pcm_sgbuf_ops_page,
526 };
527
528 static int snd_bt87x_capture_volume_info(struct snd_kcontrol *kcontrol,
529                                          struct snd_ctl_elem_info *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(struct snd_kcontrol *kcontrol,
539                                         struct snd_ctl_elem_value *value)
540 {
541         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
542
543         value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
544         return 0;
545 }
546
547 static int snd_bt87x_capture_volume_put(struct snd_kcontrol *kcontrol,
548                                         struct snd_ctl_elem_value *value)
549 {
550         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
551         u32 old_control;
552         int changed;
553
554         spin_lock_irq(&chip->reg_lock);
555         old_control = chip->reg_control;
556         chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
557                 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
558         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
559         changed = old_control != chip->reg_control;
560         spin_unlock_irq(&chip->reg_lock);
561         return changed;
562 }
563
564 static struct snd_kcontrol_new snd_bt87x_capture_volume = {
565         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
566         .name = "Capture Volume",
567         .info = snd_bt87x_capture_volume_info,
568         .get = snd_bt87x_capture_volume_get,
569         .put = snd_bt87x_capture_volume_put,
570 };
571
572 static int snd_bt87x_capture_boost_info(struct snd_kcontrol *kcontrol,
573                                         struct snd_ctl_elem_info *info)
574 {
575         info->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
576         info->count = 1;
577         info->value.integer.min = 0;
578         info->value.integer.max = 1;
579         return 0;
580 }
581
582 static int snd_bt87x_capture_boost_get(struct snd_kcontrol *kcontrol,
583                                        struct snd_ctl_elem_value *value)
584 {
585         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
586
587         value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
588         return 0;
589 }
590
591 static int snd_bt87x_capture_boost_put(struct snd_kcontrol *kcontrol,
592                                        struct snd_ctl_elem_value *value)
593 {
594         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
595         u32 old_control;
596         int changed;
597
598         spin_lock_irq(&chip->reg_lock);
599         old_control = chip->reg_control;
600         chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
601                 | (value->value.integer.value[0] ? CTL_A_G2X : 0);
602         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
603         changed = chip->reg_control != old_control;
604         spin_unlock_irq(&chip->reg_lock);
605         return changed;
606 }
607
608 static struct snd_kcontrol_new snd_bt87x_capture_boost = {
609         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
610         .name = "Capture Boost",
611         .info = snd_bt87x_capture_boost_info,
612         .get = snd_bt87x_capture_boost_get,
613         .put = snd_bt87x_capture_boost_put,
614 };
615
616 static int snd_bt87x_capture_source_info(struct snd_kcontrol *kcontrol,
617                                          struct snd_ctl_elem_info *info)
618 {
619         static char *texts[3] = {"TV Tuner", "FM", "Mic/Line"};
620
621         info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
622         info->count = 1;
623         info->value.enumerated.items = 3;
624         if (info->value.enumerated.item > 2)
625                 info->value.enumerated.item = 2;
626         strcpy(info->value.enumerated.name, texts[info->value.enumerated.item]);
627         return 0;
628 }
629
630 static int snd_bt87x_capture_source_get(struct snd_kcontrol *kcontrol,
631                                         struct snd_ctl_elem_value *value)
632 {
633         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
634
635         value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
636         return 0;
637 }
638
639 static int snd_bt87x_capture_source_put(struct snd_kcontrol *kcontrol,
640                                         struct snd_ctl_elem_value *value)
641 {
642         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
643         u32 old_control;
644         int changed;
645
646         spin_lock_irq(&chip->reg_lock);
647         old_control = chip->reg_control;
648         chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
649                 | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
650         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
651         changed = chip->reg_control != old_control;
652         spin_unlock_irq(&chip->reg_lock);
653         return changed;
654 }
655
656 static struct snd_kcontrol_new snd_bt87x_capture_source = {
657         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
658         .name = "Capture Source",
659         .info = snd_bt87x_capture_source_info,
660         .get = snd_bt87x_capture_source_get,
661         .put = snd_bt87x_capture_source_put,
662 };
663
664 static int snd_bt87x_free(struct snd_bt87x *chip)
665 {
666         if (chip->mmio) {
667                 snd_bt87x_stop(chip);
668                 if (chip->irq >= 0)
669                         synchronize_irq(chip->irq);
670
671                 iounmap(chip->mmio);
672         }
673         if (chip->irq >= 0)
674                 free_irq(chip->irq, chip);
675         pci_release_regions(chip->pci);
676         pci_disable_device(chip->pci);
677         kfree(chip);
678         return 0;
679 }
680
681 static int snd_bt87x_dev_free(struct snd_device *device)
682 {
683         struct snd_bt87x *chip = device->device_data;
684         return snd_bt87x_free(chip);
685 }
686
687 static int __devinit snd_bt87x_pcm(struct snd_bt87x *chip, int device, char *name)
688 {
689         int err;
690         struct snd_pcm *pcm;
691
692         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
693         if (err < 0)
694                 return err;
695         pcm->private_data = chip;
696         strcpy(pcm->name, name);
697         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
698         return snd_pcm_lib_preallocate_pages_for_all(pcm,
699                                                      SNDRV_DMA_TYPE_DEV_SG,
700                                                      snd_dma_pci_data(chip->pci),
701                                                         128 * 1024,
702                                                         (255 * 4092 + 1023) & ~1023);
703 }
704
705 static int __devinit snd_bt87x_create(struct snd_card *card,
706                                       struct pci_dev *pci,
707                                       struct snd_bt87x **rchip)
708 {
709         struct snd_bt87x *chip;
710         int err;
711         static struct snd_device_ops ops = {
712                 .dev_free = snd_bt87x_dev_free
713         };
714
715         *rchip = NULL;
716
717         err = pci_enable_device(pci);
718         if (err < 0)
719                 return err;
720
721         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
722         if (!chip) {
723                 pci_disable_device(pci);
724                 return -ENOMEM;
725         }
726         chip->card = card;
727         chip->pci = pci;
728         chip->irq = -1;
729         spin_lock_init(&chip->reg_lock);
730
731         if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) {
732                 kfree(chip);
733                 pci_disable_device(pci);
734                 return err;
735         }
736         chip->mmio = ioremap_nocache(pci_resource_start(pci, 0),
737                                      pci_resource_len(pci, 0));
738         if (!chip->mmio) {
739                 snd_bt87x_free(chip);
740                 snd_printk(KERN_ERR "cannot remap io memory\n");
741                 return -ENOMEM;
742         }
743
744         chip->reg_control = CTL_DA_ES2 | CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
745         chip->interrupt_mask = MY_INTERRUPTS;
746         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
747         snd_bt87x_writel(chip, REG_INT_MASK, 0);
748         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
749
750         if (request_irq(pci->irq, snd_bt87x_interrupt, SA_INTERRUPT | SA_SHIRQ,
751                         "Bt87x audio", chip)) {
752                 snd_bt87x_free(chip);
753                 snd_printk(KERN_ERR "cannot grab irq\n");
754                 return -EBUSY;
755         }
756         chip->irq = pci->irq;
757         pci_set_master(pci);
758         synchronize_irq(chip->irq);
759
760         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
761         if (err < 0) {
762                 snd_bt87x_free(chip);
763                 return err;
764         }
765         snd_card_set_dev(card, &pci->dev);
766         *rchip = chip;
767         return 0;
768 }
769
770 #define BT_DEVICE(chip, subvend, subdev, rate) \
771         { .vendor = PCI_VENDOR_ID_BROOKTREE, \
772           .device = chip, \
773           .subvendor = subvend, .subdevice = subdev, \
774           .driver_data = rate }
775
776 /* driver_data is the default digital_rate value for that device */
777 static struct pci_device_id snd_bt87x_ids[] = {
778         /* Hauppauge WinTV series */
779         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0x13eb, 32000),
780         /* Hauppauge WinTV series */
781         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, 0x0070, 0x13eb, 32000),
782         /* Viewcast Osprey 200 */
783         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff01, 44100),
784         /* AVerMedia Studio No. 103, 203, ...? */
785         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1461, 0x0003, 48000),
786         /* Leadtek Winfast tv 2000xp delux */
787         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x107d, 0x6606, 32000),
788         { }
789 };
790 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
791
792 /* cards known not to have audio
793  * (DVB cards use the audio function to transfer MPEG data) */
794 static struct {
795         unsigned short subvendor, subdevice;
796 } blacklist[] __devinitdata = {
797         {0x0071, 0x0101}, /* Nebula Electronics DigiTV */
798         {0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */
799         {0x1461, 0x0761}, /* AVermedia AverTV DVB-T */
800         {0x1461, 0x0771}, /* AVermedia DVB-T 771 */
801         {0x1822, 0x0001}, /* Twinhan VisionPlus DVB-T */
802         {0x18ac, 0xdb10}, /* DVICO FusionHDTV DVB-T Lite */
803         {0x270f, 0xfc00}, /* Chaintech Digitop DST-1000 DVB-S */
804 };
805
806 static struct pci_driver driver;
807
808 /* return the rate of the card, or a negative value if it's blacklisted */
809 static int __devinit snd_bt87x_detect_card(struct pci_dev *pci)
810 {
811         int i;
812         const struct pci_device_id *supported;
813
814         supported = pci_match_device(&driver, pci);
815         if (supported && supported->driver_data > 0)
816                 return supported->driver_data;
817
818         for (i = 0; i < ARRAY_SIZE(blacklist); ++i)
819                 if (blacklist[i].subvendor == pci->subsystem_vendor &&
820                     blacklist[i].subdevice == pci->subsystem_device) {
821                         snd_printdd(KERN_INFO "card %#04x-%#04x:%#04x has no audio\n",
822                                     pci->device, pci->subsystem_vendor, pci->subsystem_device);
823                         return -EBUSY;
824                 }
825
826         snd_printk(KERN_INFO "unknown card %#04x-%#04x:%#04x, using default rate 32000\n",
827                    pci->device, pci->subsystem_vendor, pci->subsystem_device);
828         snd_printk(KERN_DEBUG "please mail id, board name, and, "
829                    "if it works, the correct digital_rate option to "
830                    "<alsa-devel@lists.sf.net>\n");
831         return 32000; /* default rate */
832 }
833
834 static int __devinit snd_bt87x_probe(struct pci_dev *pci,
835                                      const struct pci_device_id *pci_id)
836 {
837         static int dev;
838         struct snd_card *card;
839         struct snd_bt87x *chip;
840         int err, rate;
841
842         rate = pci_id->driver_data;
843         if (! rate)
844                 if ((rate = snd_bt87x_detect_card(pci)) <= 0)
845                         return -ENODEV;
846
847         if (dev >= SNDRV_CARDS)
848                 return -ENODEV;
849         if (!enable[dev]) {
850                 ++dev;
851                 return -ENOENT;
852         }
853
854         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
855         if (!card)
856                 return -ENOMEM;
857
858         err = snd_bt87x_create(card, pci, &chip);
859         if (err < 0)
860                 goto _error;
861
862         if (digital_rate[dev] > 0)
863                 chip->dig_rate = digital_rate[dev];
864         else
865                 chip->dig_rate = rate;
866
867         err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
868         if (err < 0)
869                 goto _error;
870         err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
871         if (err < 0)
872                 goto _error;
873
874         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_volume, chip));
875         if (err < 0)
876                 goto _error;
877         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_boost, chip));
878         if (err < 0)
879                 goto _error;
880         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_source, chip));
881         if (err < 0)
882                 goto _error;
883
884         strcpy(card->driver, "Bt87x");
885         sprintf(card->shortname, "Brooktree Bt%x", pci->device);
886         sprintf(card->longname, "%s at %#lx, irq %i",
887                 card->shortname, pci_resource_start(pci, 0), chip->irq);
888         strcpy(card->mixername, "Bt87x");
889
890         err = snd_card_register(card);
891         if (err < 0)
892                 goto _error;
893
894         pci_set_drvdata(pci, card);
895         ++dev;
896         return 0;
897
898 _error:
899         snd_card_free(card);
900         return err;
901 }
902
903 static void __devexit snd_bt87x_remove(struct pci_dev *pci)
904 {
905         snd_card_free(pci_get_drvdata(pci));
906         pci_set_drvdata(pci, NULL);
907 }
908
909 /* default entries for all Bt87x cards - it's not exported */
910 /* driver_data is set to 0 to call detection */
911 static struct pci_device_id snd_bt87x_default_ids[] = {
912         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, PCI_ANY_ID, PCI_ANY_ID, 0),
913         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, PCI_ANY_ID, PCI_ANY_ID, 0),
914         { }
915 };
916
917 static struct pci_driver driver = {
918         .name = "Bt87x",
919         .id_table = snd_bt87x_ids,
920         .probe = snd_bt87x_probe,
921         .remove = __devexit_p(snd_bt87x_remove),
922 };
923
924 static int __init alsa_card_bt87x_init(void)
925 {
926         if (load_all)
927                 driver.id_table = snd_bt87x_default_ids;
928         return pci_register_driver(&driver);
929 }
930
931 static void __exit alsa_card_bt87x_exit(void)
932 {
933         pci_unregister_driver(&driver);
934 }
935
936 module_init(alsa_card_bt87x_init)
937 module_exit(alsa_card_bt87x_exit)