defdc5a459f0ffea3ff7732160bdfabfa0db9b58
[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 #ifndef PCI_VENDOR_ID_BROOKTREE
63 #define PCI_VENDOR_ID_BROOKTREE 0x109e
64 #endif
65 #ifndef PCI_DEVICE_ID_BROOKTREE_878
66 #define PCI_DEVICE_ID_BROOKTREE_878 0x0878
67 #endif
68 #ifndef PCI_DEVICE_ID_BROOKTREE_879
69 #define PCI_DEVICE_ID_BROOKTREE_879 0x0879
70 #endif
71
72 /* register offsets */
73 #define REG_INT_STAT            0x100   /* interrupt status */
74 #define REG_INT_MASK            0x104   /* interrupt mask */
75 #define REG_GPIO_DMA_CTL        0x10c   /* audio control */
76 #define REG_PACKET_LEN          0x110   /* audio packet lengths */
77 #define REG_RISC_STRT_ADD       0x114   /* RISC program start address */
78 #define REG_RISC_COUNT          0x120   /* RISC program counter */
79
80 /* interrupt bits */
81 #define INT_OFLOW       (1 <<  3)       /* audio A/D overflow */
82 #define INT_RISCI       (1 << 11)       /* RISC instruction IRQ bit set */
83 #define INT_FBUS        (1 << 12)       /* FIFO overrun due to bus access latency */
84 #define INT_FTRGT       (1 << 13)       /* FIFO overrun due to target latency */
85 #define INT_FDSR        (1 << 14)       /* FIFO data stream resynchronization */
86 #define INT_PPERR       (1 << 15)       /* PCI parity error */
87 #define INT_RIPERR      (1 << 16)       /* RISC instruction parity error */
88 #define INT_PABORT      (1 << 17)       /* PCI master or target abort */
89 #define INT_OCERR       (1 << 18)       /* invalid opcode */
90 #define INT_SCERR       (1 << 19)       /* sync counter overflow */
91 #define INT_RISC_EN     (1 << 27)       /* DMA controller running */
92 #define INT_RISCS_SHIFT       28        /* RISC status bits */
93
94 /* audio control bits */
95 #define CTL_FIFO_ENABLE         (1 <<  0)       /* enable audio data FIFO */
96 #define CTL_RISC_ENABLE         (1 <<  1)       /* enable audio DMA controller */
97 #define CTL_PKTP_4              (0 <<  2)       /* packet mode FIFO trigger point - 4 DWORDs */
98 #define CTL_PKTP_8              (1 <<  2)       /* 8 DWORDs */
99 #define CTL_PKTP_16             (2 <<  2)       /* 16 DWORDs */
100 #define CTL_ACAP_EN             (1 <<  4)       /* enable audio capture */
101 #define CTL_DA_APP              (1 <<  5)       /* GPIO input */
102 #define CTL_DA_IOM_AFE          (0 <<  6)       /* audio A/D input */
103 #define CTL_DA_IOM_DA           (1 <<  6)       /* digital audio input */
104 #define CTL_DA_SDR_SHIFT               8        /* DDF first stage decimation rate */
105 #define CTL_DA_SDR_MASK         (0xf<< 8)
106 #define CTL_DA_LMT              (1 << 12)       /* limit audio data values */
107 #define CTL_DA_ES2              (1 << 13)       /* enable DDF stage 2 */
108 #define CTL_DA_SBR              (1 << 14)       /* samples rounded to 8 bits */
109 #define CTL_DA_DPM              (1 << 15)       /* data packet mode */
110 #define CTL_DA_LRD_SHIFT              16        /* ALRCK delay */
111 #define CTL_DA_MLB              (1 << 21)       /* MSB/LSB format */
112 #define CTL_DA_LRI              (1 << 22)       /* left/right indication */
113 #define CTL_DA_SCE              (1 << 23)       /* sample clock edge */
114 #define CTL_A_SEL_STV           (0 << 24)       /* TV tuner audio input */
115 #define CTL_A_SEL_SFM           (1 << 24)       /* FM audio input */
116 #define CTL_A_SEL_SML           (2 << 24)       /* mic/line audio input */
117 #define CTL_A_SEL_SMXC          (3 << 24)       /* MUX bypass */
118 #define CTL_A_SEL_SHIFT               24
119 #define CTL_A_SEL_MASK          (3 << 24)
120 #define CTL_A_PWRDN             (1 << 26)       /* analog audio power-down */
121 #define CTL_A_G2X               (1 << 27)       /* audio gain boost */
122 #define CTL_A_GAIN_SHIFT              28        /* audio input gain */
123 #define CTL_A_GAIN_MASK         (0xf<<28)
124
125 /* RISC instruction opcodes */
126 #define RISC_WRITE      (0x1 << 28)     /* write FIFO data to memory at address */
127 #define RISC_WRITEC     (0x5 << 28)     /* write FIFO data to memory at current address */
128 #define RISC_SKIP       (0x2 << 28)     /* skip FIFO data */
129 #define RISC_JUMP       (0x7 << 28)     /* jump to address */
130 #define RISC_SYNC       (0x8 << 28)     /* synchronize with FIFO */
131
132 /* RISC instruction bits */
133 #define RISC_BYTES_ENABLE       (0xf << 12)     /* byte enable bits */
134 #define RISC_RESYNC             (  1 << 15)     /* disable FDSR errors */
135 #define RISC_SET_STATUS_SHIFT           16      /* set status bits */
136 #define RISC_RESET_STATUS_SHIFT         20      /* clear status bits */
137 #define RISC_IRQ                (  1 << 24)     /* interrupt */
138 #define RISC_EOL                (  1 << 26)     /* end of line */
139 #define RISC_SOL                (  1 << 27)     /* start of line */
140
141 /* SYNC status bits values */
142 #define RISC_SYNC_FM1   0x6
143 #define RISC_SYNC_VRO   0xc
144
145 #define ANALOG_CLOCK 1792000
146 #ifdef CONFIG_SND_BT87X_OVERCLOCK
147 #define CLOCK_DIV_MIN 1
148 #else
149 #define CLOCK_DIV_MIN 4
150 #endif
151 #define CLOCK_DIV_MAX 15
152
153 #define ERROR_INTERRUPTS (INT_FBUS | INT_FTRGT | INT_PPERR | \
154                           INT_RIPERR | INT_PABORT | INT_OCERR)
155 #define MY_INTERRUPTS (INT_RISCI | ERROR_INTERRUPTS)
156
157 /* SYNC, one WRITE per line, one extra WRITE per page boundary, SYNC, JUMP */
158 #define MAX_RISC_SIZE ((1 + 255 + (PAGE_ALIGN(255 * 4092) / PAGE_SIZE - 1) + 1 + 1) * 8)
159
160 typedef struct snd_bt87x bt87x_t;
161 struct snd_bt87x {
162         snd_card_t *card;
163         struct pci_dev *pci;
164
165         void __iomem *mmio;
166         int irq;
167
168         int dig_rate;
169
170         spinlock_t reg_lock;
171         long opened;
172         snd_pcm_substream_t *substream;
173
174         struct snd_dma_buffer dma_risc;
175         unsigned int line_bytes;
176         unsigned int lines;
177
178         u32 reg_control;
179         u32 interrupt_mask;
180
181         int current_line;
182
183         int pci_parity_errors;
184 };
185
186 enum { DEVICE_DIGITAL, DEVICE_ANALOG };
187
188 static inline u32 snd_bt87x_readl(bt87x_t *chip, u32 reg)
189 {
190         return readl(chip->mmio + reg);
191 }
192
193 static inline void snd_bt87x_writel(bt87x_t *chip, u32 reg, u32 value)
194 {
195         writel(value, chip->mmio + reg);
196 }
197
198 static int snd_bt87x_create_risc(bt87x_t *chip, snd_pcm_substream_t *substream,
199                                  unsigned int periods, unsigned int period_bytes)
200 {
201         struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
202         unsigned int i, offset;
203         u32 *risc;
204
205         if (chip->dma_risc.area == NULL) {
206                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
207                                         PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
208                         return -ENOMEM;
209         }
210         risc = (u32 *)chip->dma_risc.area;
211         offset = 0;
212         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
213         *risc++ = cpu_to_le32(0);
214         for (i = 0; i < periods; ++i) {
215                 u32 rest;
216
217                 rest = period_bytes;
218                 do {
219                         u32 cmd, len;
220
221                         len = PAGE_SIZE - (offset % PAGE_SIZE);
222                         if (len > rest)
223                                 len = rest;
224                         cmd = RISC_WRITE | len;
225                         if (rest == period_bytes) {
226                                 u32 block = i * 16 / periods;
227                                 cmd |= RISC_SOL;
228                                 cmd |= block << RISC_SET_STATUS_SHIFT;
229                                 cmd |= (~block & 0xf) << RISC_RESET_STATUS_SHIFT;
230                         }
231                         if (len == rest)
232                                 cmd |= RISC_EOL | RISC_IRQ;
233                         *risc++ = cpu_to_le32(cmd);
234                         *risc++ = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, offset));
235                         offset += len;
236                         rest -= len;
237                 } while (rest > 0);
238         }
239         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO);
240         *risc++ = cpu_to_le32(0);
241         *risc++ = cpu_to_le32(RISC_JUMP);
242         *risc++ = cpu_to_le32(chip->dma_risc.addr);
243         chip->line_bytes = period_bytes;
244         chip->lines = periods;
245         return 0;
246 }
247
248 static void snd_bt87x_free_risc(bt87x_t *chip)
249 {
250         if (chip->dma_risc.area) {
251                 snd_dma_free_pages(&chip->dma_risc);
252                 chip->dma_risc.area = NULL;
253         }
254 }
255
256 static void snd_bt87x_pci_error(bt87x_t *chip, unsigned int status)
257 {
258         u16 pci_status;
259
260         pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
261         pci_status &= PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
262                 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
263                 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY;
264         pci_write_config_word(chip->pci, PCI_STATUS, pci_status);
265         if (pci_status != PCI_STATUS_DETECTED_PARITY)
266                 snd_printk(KERN_ERR "Aieee - PCI error! status %#08x, PCI status %#04x\n",
267                            status & ERROR_INTERRUPTS, pci_status);
268         else {
269                 snd_printk(KERN_ERR "Aieee - PCI parity error detected!\n");
270                 /* error 'handling' similar to aic7xxx_pci.c: */
271                 chip->pci_parity_errors++;
272                 if (chip->pci_parity_errors > 20) {
273                         snd_printk(KERN_ERR "Too many PCI parity errors observed.\n");
274                         snd_printk(KERN_ERR "Some device on this bus is generating bad parity.\n");
275                         snd_printk(KERN_ERR "This is an error *observed by*, not *generated by*, this card.\n");
276                         snd_printk(KERN_ERR "PCI parity error checking has been disabled.\n");
277                         chip->interrupt_mask &= ~(INT_PPERR | INT_RIPERR);
278                         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
279                 }
280         }
281 }
282
283 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id, struct pt_regs *regs)
284 {
285         bt87x_t *chip = dev_id;
286         unsigned int status, irq_status;
287
288         status = snd_bt87x_readl(chip, REG_INT_STAT);
289         irq_status = status & chip->interrupt_mask;
290         if (!irq_status)
291                 return IRQ_NONE;
292         snd_bt87x_writel(chip, REG_INT_STAT, irq_status);
293
294         if (irq_status & ERROR_INTERRUPTS) {
295                 if (irq_status & (INT_FBUS | INT_FTRGT))
296                         snd_printk(KERN_WARNING "FIFO overrun, status %#08x\n", status);
297                 if (irq_status & INT_OCERR)
298                         snd_printk(KERN_ERR "internal RISC error, status %#08x\n", status);
299                 if (irq_status & (INT_PPERR | INT_RIPERR | INT_PABORT))
300                         snd_bt87x_pci_error(chip, irq_status);
301         }
302         if ((irq_status & INT_RISCI) && (chip->reg_control & CTL_ACAP_EN)) {
303                 int current_block, irq_block;
304
305                 /* assume that exactly one line has been recorded */
306                 chip->current_line = (chip->current_line + 1) % chip->lines;
307                 /* but check if some interrupts have been skipped */
308                 current_block = chip->current_line * 16 / chip->lines;
309                 irq_block = status >> INT_RISCS_SHIFT;
310                 if (current_block != irq_block)
311                         chip->current_line = (irq_block * chip->lines + 15) / 16;
312
313                 snd_pcm_period_elapsed(chip->substream);
314         }
315         return IRQ_HANDLED;
316 }
317
318 static snd_pcm_hardware_t snd_bt87x_digital_hw = {
319         .info = SNDRV_PCM_INFO_MMAP |
320                 SNDRV_PCM_INFO_INTERLEAVED |
321                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
322                 SNDRV_PCM_INFO_MMAP_VALID,
323         .formats = SNDRV_PCM_FMTBIT_S16_LE,
324         .rates = 0, /* set at runtime */
325         .channels_min = 2,
326         .channels_max = 2,
327         .buffer_bytes_max = 255 * 4092,
328         .period_bytes_min = 32,
329         .period_bytes_max = 4092,
330         .periods_min = 2,
331         .periods_max = 255,
332 };
333
334 static snd_pcm_hardware_t snd_bt87x_analog_hw = {
335         .info = SNDRV_PCM_INFO_MMAP |
336                 SNDRV_PCM_INFO_INTERLEAVED |
337                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
338                 SNDRV_PCM_INFO_MMAP_VALID,
339         .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
340         .rates = SNDRV_PCM_RATE_KNOT,
341         .rate_min = ANALOG_CLOCK / CLOCK_DIV_MAX,
342         .rate_max = ANALOG_CLOCK / CLOCK_DIV_MIN,
343         .channels_min = 1,
344         .channels_max = 1,
345         .buffer_bytes_max = 255 * 4092,
346         .period_bytes_min = 32,
347         .period_bytes_max = 4092,
348         .periods_min = 2,
349         .periods_max = 255,
350 };
351
352 static int snd_bt87x_set_digital_hw(bt87x_t *chip, snd_pcm_runtime_t *runtime)
353 {
354         static struct {
355                 int rate;
356                 unsigned int bit;
357         } ratebits[] = {
358                 {8000, SNDRV_PCM_RATE_8000},
359                 {11025, SNDRV_PCM_RATE_11025},
360                 {16000, SNDRV_PCM_RATE_16000},
361                 {22050, SNDRV_PCM_RATE_22050},
362                 {32000, SNDRV_PCM_RATE_32000},
363                 {44100, SNDRV_PCM_RATE_44100},
364                 {48000, SNDRV_PCM_RATE_48000}
365         };
366         int i;
367
368         chip->reg_control |= CTL_DA_IOM_DA;
369         runtime->hw = snd_bt87x_digital_hw;
370         runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
371         for (i = 0; i < ARRAY_SIZE(ratebits); ++i)
372                 if (chip->dig_rate == ratebits[i].rate) {
373                         runtime->hw.rates = ratebits[i].bit;
374                         break;
375                 }
376         runtime->hw.rate_min = chip->dig_rate;
377         runtime->hw.rate_max = chip->dig_rate;
378         return 0;
379 }
380
381 static int snd_bt87x_set_analog_hw(bt87x_t *chip, snd_pcm_runtime_t *runtime)
382 {
383         static ratnum_t analog_clock = {
384                 .num = ANALOG_CLOCK,
385                 .den_min = CLOCK_DIV_MIN,
386                 .den_max = CLOCK_DIV_MAX,
387                 .den_step = 1
388         };
389         static snd_pcm_hw_constraint_ratnums_t constraint_rates = {
390                 .nrats = 1,
391                 .rats = &analog_clock
392         };
393
394         chip->reg_control &= ~CTL_DA_IOM_DA;
395         runtime->hw = snd_bt87x_analog_hw;
396         return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
397                                              &constraint_rates);
398 }
399
400 static int snd_bt87x_pcm_open(snd_pcm_substream_t *substream)
401 {
402         bt87x_t *chip = snd_pcm_substream_chip(substream);
403         snd_pcm_runtime_t *runtime = substream->runtime;
404         int err;
405
406         if (test_and_set_bit(0, &chip->opened))
407                 return -EBUSY;
408
409         if (substream->pcm->device == DEVICE_DIGITAL)
410                 err = snd_bt87x_set_digital_hw(chip, runtime);
411         else
412                 err = snd_bt87x_set_analog_hw(chip, runtime);
413         if (err < 0)
414                 goto _error;
415
416         err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
417         if (err < 0)
418                 goto _error;
419
420         chip->substream = substream;
421         return 0;
422
423 _error:
424         clear_bit(0, &chip->opened);
425         smp_mb__after_clear_bit();
426         return err;
427 }
428
429 static int snd_bt87x_close(snd_pcm_substream_t *substream)
430 {
431         bt87x_t *chip = snd_pcm_substream_chip(substream);
432
433         chip->substream = NULL;
434         clear_bit(0, &chip->opened);
435         smp_mb__after_clear_bit();
436         return 0;
437 }
438
439 static int snd_bt87x_hw_params(snd_pcm_substream_t *substream,
440                                snd_pcm_hw_params_t *hw_params)
441 {
442         bt87x_t *chip = snd_pcm_substream_chip(substream);
443         int err;
444
445         err = snd_pcm_lib_malloc_pages(substream,
446                                        params_buffer_bytes(hw_params));
447         if (err < 0)
448                 return err;
449         return snd_bt87x_create_risc(chip, substream,
450                                      params_periods(hw_params),
451                                      params_period_bytes(hw_params));
452 }
453
454 static int snd_bt87x_hw_free(snd_pcm_substream_t *substream)
455 {
456         bt87x_t *chip = snd_pcm_substream_chip(substream);
457
458         snd_bt87x_free_risc(chip);
459         snd_pcm_lib_free_pages(substream);
460         return 0;
461 }
462
463 static int snd_bt87x_prepare(snd_pcm_substream_t *substream)
464 {
465         bt87x_t *chip = snd_pcm_substream_chip(substream);
466         snd_pcm_runtime_t *runtime = substream->runtime;
467         int decimation;
468
469         spin_lock_irq(&chip->reg_lock);
470         chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
471         decimation = (ANALOG_CLOCK + runtime->rate / 4) / runtime->rate;
472         chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
473         if (runtime->format == SNDRV_PCM_FORMAT_S8)
474                 chip->reg_control |= CTL_DA_SBR;
475         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
476         spin_unlock_irq(&chip->reg_lock);
477         return 0;
478 }
479
480 static int snd_bt87x_start(bt87x_t *chip)
481 {
482         spin_lock(&chip->reg_lock);
483         chip->current_line = 0;
484         chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
485         snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
486         snd_bt87x_writel(chip, REG_PACKET_LEN,
487                          chip->line_bytes | (chip->lines << 16));
488         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
489         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
490         spin_unlock(&chip->reg_lock);
491         return 0;
492 }
493
494 static int snd_bt87x_stop(bt87x_t *chip)
495 {
496         spin_lock(&chip->reg_lock);
497         chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
498         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
499         snd_bt87x_writel(chip, REG_INT_MASK, 0);
500         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
501         spin_unlock(&chip->reg_lock);
502         return 0;
503 }
504
505 static int snd_bt87x_trigger(snd_pcm_substream_t *substream, int cmd)
506 {
507         bt87x_t *chip = snd_pcm_substream_chip(substream);
508
509         switch (cmd) {
510         case SNDRV_PCM_TRIGGER_START:
511                 return snd_bt87x_start(chip);
512         case SNDRV_PCM_TRIGGER_STOP:
513                 return snd_bt87x_stop(chip);
514         default:
515                 return -EINVAL;
516         }
517 }
518
519 static snd_pcm_uframes_t snd_bt87x_pointer(snd_pcm_substream_t *substream)
520 {
521         bt87x_t *chip = snd_pcm_substream_chip(substream);
522         snd_pcm_runtime_t *runtime = substream->runtime;
523
524         return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
525 }
526
527 static snd_pcm_ops_t snd_bt87x_pcm_ops = {
528         .open = snd_bt87x_pcm_open,
529         .close = snd_bt87x_close,
530         .ioctl = snd_pcm_lib_ioctl,
531         .hw_params = snd_bt87x_hw_params,
532         .hw_free = snd_bt87x_hw_free,
533         .prepare = snd_bt87x_prepare,
534         .trigger = snd_bt87x_trigger,
535         .pointer = snd_bt87x_pointer,
536         .page = snd_pcm_sgbuf_ops_page,
537 };
538
539 static int snd_bt87x_capture_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
540 {
541         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
542         info->count = 1;
543         info->value.integer.min = 0;
544         info->value.integer.max = 15;
545         return 0;
546 }
547
548 static int snd_bt87x_capture_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
549 {
550         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
551
552         value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
553         return 0;
554 }
555
556 static int snd_bt87x_capture_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
557 {
558         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
559         u32 old_control;
560         int changed;
561
562         spin_lock_irq(&chip->reg_lock);
563         old_control = chip->reg_control;
564         chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
565                 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
566         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
567         changed = old_control != chip->reg_control;
568         spin_unlock_irq(&chip->reg_lock);
569         return changed;
570 }
571
572 static snd_kcontrol_new_t snd_bt87x_capture_volume = {
573         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
574         .name = "Capture Volume",
575         .info = snd_bt87x_capture_volume_info,
576         .get = snd_bt87x_capture_volume_get,
577         .put = snd_bt87x_capture_volume_put,
578 };
579
580 static int snd_bt87x_capture_boost_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
581 {
582         info->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
583         info->count = 1;
584         info->value.integer.min = 0;
585         info->value.integer.max = 1;
586         return 0;
587 }
588
589 static int snd_bt87x_capture_boost_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
590 {
591         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
592
593         value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
594         return 0;
595 }
596
597 static int snd_bt87x_capture_boost_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
598 {
599         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
600         u32 old_control;
601         int changed;
602
603         spin_lock_irq(&chip->reg_lock);
604         old_control = chip->reg_control;
605         chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
606                 | (value->value.integer.value[0] ? CTL_A_G2X : 0);
607         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
608         changed = chip->reg_control != old_control;
609         spin_unlock_irq(&chip->reg_lock);
610         return changed;
611 }
612
613 static snd_kcontrol_new_t snd_bt87x_capture_boost = {
614         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
615         .name = "Capture Boost",
616         .info = snd_bt87x_capture_boost_info,
617         .get = snd_bt87x_capture_boost_get,
618         .put = snd_bt87x_capture_boost_put,
619 };
620
621 static int snd_bt87x_capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
622 {
623         static char *texts[3] = {"TV Tuner", "FM", "Mic/Line"};
624
625         info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
626         info->count = 1;
627         info->value.enumerated.items = 3;
628         if (info->value.enumerated.item > 2)
629                 info->value.enumerated.item = 2;
630         strcpy(info->value.enumerated.name, texts[info->value.enumerated.item]);
631         return 0;
632 }
633
634 static int snd_bt87x_capture_source_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
635 {
636         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
637
638         value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
639         return 0;
640 }
641
642 static int snd_bt87x_capture_source_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
643 {
644         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
645         u32 old_control;
646         int changed;
647
648         spin_lock_irq(&chip->reg_lock);
649         old_control = chip->reg_control;
650         chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
651                 | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
652         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
653         changed = chip->reg_control != old_control;
654         spin_unlock_irq(&chip->reg_lock);
655         return changed;
656 }
657
658 static snd_kcontrol_new_t snd_bt87x_capture_source = {
659         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
660         .name = "Capture Source",
661         .info = snd_bt87x_capture_source_info,
662         .get = snd_bt87x_capture_source_get,
663         .put = snd_bt87x_capture_source_put,
664 };
665
666 static int snd_bt87x_free(bt87x_t *chip)
667 {
668         if (chip->mmio) {
669                 snd_bt87x_stop(chip);
670                 if (chip->irq >= 0)
671                         synchronize_irq(chip->irq);
672
673                 iounmap(chip->mmio);
674         }
675         if (chip->irq >= 0)
676                 free_irq(chip->irq, chip);
677         pci_release_regions(chip->pci);
678         pci_disable_device(chip->pci);
679         kfree(chip);
680         return 0;
681 }
682
683 static int snd_bt87x_dev_free(snd_device_t *device)
684 {
685         bt87x_t *chip = device->device_data;
686         return snd_bt87x_free(chip);
687 }
688
689 static int __devinit snd_bt87x_pcm(bt87x_t *chip, int device, char *name)
690 {
691         int err;
692         snd_pcm_t *pcm;
693
694         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
695         if (err < 0)
696                 return err;
697         pcm->private_data = chip;
698         strcpy(pcm->name, name);
699         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
700         return snd_pcm_lib_preallocate_pages_for_all(pcm,
701                                                      SNDRV_DMA_TYPE_DEV_SG,
702                                                      snd_dma_pci_data(chip->pci),
703                                                         128 * 1024,
704                                                         (255 * 4092 + 1023) & ~1023);
705 }
706
707 static int __devinit snd_bt87x_create(snd_card_t *card,
708                                       struct pci_dev *pci,
709                                       bt87x_t **rchip)
710 {
711         bt87x_t *chip;
712         int err;
713         static snd_device_ops_t ops = {
714                 .dev_free = snd_bt87x_dev_free
715         };
716
717         *rchip = NULL;
718
719         err = pci_enable_device(pci);
720         if (err < 0)
721                 return err;
722
723         chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
724         if (!chip) {
725                 pci_disable_device(pci);
726                 return -ENOMEM;
727         }
728         chip->card = card;
729         chip->pci = pci;
730         chip->irq = -1;
731         spin_lock_init(&chip->reg_lock);
732
733         if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) {
734                 kfree(chip);
735                 pci_disable_device(pci);
736                 return err;
737         }
738         chip->mmio = ioremap_nocache(pci_resource_start(pci, 0),
739                                      pci_resource_len(pci, 0));
740         if (!chip->mmio) {
741                 snd_bt87x_free(chip);
742                 snd_printk(KERN_ERR "cannot remap io memory\n");
743                 return -ENOMEM;
744         }
745
746         chip->reg_control = CTL_DA_ES2 | CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
747         chip->interrupt_mask = MY_INTERRUPTS;
748         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
749         snd_bt87x_writel(chip, REG_INT_MASK, 0);
750         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
751
752         if (request_irq(pci->irq, snd_bt87x_interrupt, SA_INTERRUPT | SA_SHIRQ,
753                         "Bt87x audio", chip)) {
754                 snd_bt87x_free(chip);
755                 snd_printk(KERN_ERR "cannot grab irq\n");
756                 return -EBUSY;
757         }
758         chip->irq = pci->irq;
759         pci_set_master(pci);
760         synchronize_irq(chip->irq);
761
762         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
763         if (err < 0) {
764                 snd_bt87x_free(chip);
765                 return err;
766         }
767         snd_card_set_dev(card, &pci->dev);
768         *rchip = chip;
769         return 0;
770 }
771
772 #define BT_DEVICE(chip, subvend, subdev, rate) \
773         { .vendor = PCI_VENDOR_ID_BROOKTREE, \
774           .device = PCI_DEVICE_ID_BROOKTREE_##chip, \
775           .subvendor = subvend, .subdevice = subdev, \
776           .driver_data = rate }
777
778 /* driver_data is the default digital_rate value for that device */
779 static struct pci_device_id snd_bt87x_ids[] = {
780         BT_DEVICE(878, 0x0070, 0x13eb, 32000), /* Hauppauge WinTV series */
781         BT_DEVICE(879, 0x0070, 0x13eb, 32000), /* Hauppauge WinTV series */
782         BT_DEVICE(878, 0x0070, 0xff01, 44100), /* Viewcast Osprey 200 */
783         { }
784 };
785 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
786
787 /* cards known not to have audio
788  * (DVB cards use the audio function to transfer MPEG data) */
789 static struct {
790         unsigned short subvendor, subdevice;
791 } blacklist[] __devinitdata = {
792         {0x0071, 0x0101}, /* Nebula Electronics DigiTV */
793         {0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */
794         {0x1461, 0x0761}, /* AVermedia AverTV DVB-T */
795         {0x1461, 0x0771}, /* AVermedia DVB-T 771 */
796         {0x1822, 0x0001}, /* Twinhan VisionPlus DVB-T */
797         {0x18ac, 0xdb10}, /* DVICO FusionHDTV DVB-T Lite */
798         {0x270f, 0xfc00}, /* Chaintech Digitop DST-1000 DVB-S */
799 };
800
801 /* return the rate of the card, or a negative value if it's blacklisted */
802 static int __devinit snd_bt87x_detect_card(struct pci_dev *pci)
803 {
804         int i;
805         const struct pci_device_id *supported;
806
807         supported = pci_match_device(snd_bt87x_ids, pci);
808         if (supported)
809                 return supported->driver_data;
810
811         for (i = 0; i < ARRAY_SIZE(blacklist); ++i)
812                 if (blacklist[i].subvendor == pci->subsystem_vendor &&
813                     blacklist[i].subdevice == pci->subsystem_device) {
814                         snd_printdd(KERN_INFO "card %#04x:%#04x has no audio\n",
815                                     pci->subsystem_vendor, pci->subsystem_device);
816                         return -EBUSY;
817                 }
818
819         snd_printk(KERN_INFO "unknown card %#04x:%#04x, using default rate 32000\n",
820                    pci->subsystem_vendor, pci->subsystem_device);
821         snd_printk(KERN_DEBUG "please mail id, board name, and, "
822                    "if it works, the correct digital_rate option to "
823                    "<alsa-devel@lists.sf.net>\n");
824         return 32000; /* default rate */
825 }
826
827 static int __devinit snd_bt87x_probe(struct pci_dev *pci,
828                                      const struct pci_device_id *pci_id)
829 {
830         static int dev;
831         snd_card_t *card;
832         bt87x_t *chip;
833         int err, rate;
834
835         rate = pci_id->driver_data;
836         if (! rate)
837                 if ((rate = snd_bt87x_detect_card(pci)) <= 0)
838                         return -ENODEV;
839
840         if (dev >= SNDRV_CARDS)
841                 return -ENODEV;
842         if (!enable[dev]) {
843                 ++dev;
844                 return -ENOENT;
845         }
846
847         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
848         if (!card)
849                 return -ENOMEM;
850
851         err = snd_bt87x_create(card, pci, &chip);
852         if (err < 0)
853                 goto _error;
854
855         if (digital_rate[dev] > 0)
856                 chip->dig_rate = digital_rate[dev];
857         else
858                 chip->dig_rate = rate;
859
860         err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
861         if (err < 0)
862                 goto _error;
863         err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
864         if (err < 0)
865                 goto _error;
866
867         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_volume, chip));
868         if (err < 0)
869                 goto _error;
870         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_boost, chip));
871         if (err < 0)
872                 goto _error;
873         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_source, chip));
874         if (err < 0)
875                 goto _error;
876
877         strcpy(card->driver, "Bt87x");
878         sprintf(card->shortname, "Brooktree Bt%x", pci->device);
879         sprintf(card->longname, "%s at %#lx, irq %i",
880                 card->shortname, pci_resource_start(pci, 0), chip->irq);
881         strcpy(card->mixername, "Bt87x");
882
883         err = snd_card_register(card);
884         if (err < 0)
885                 goto _error;
886
887         pci_set_drvdata(pci, card);
888         ++dev;
889         return 0;
890
891 _error:
892         snd_card_free(card);
893         return err;
894 }
895
896 static void __devexit snd_bt87x_remove(struct pci_dev *pci)
897 {
898         snd_card_free(pci_get_drvdata(pci));
899         pci_set_drvdata(pci, NULL);
900 }
901
902 /* default entries for all Bt87x cards - it's not exported */
903 /* driver_data is set to 0 to call detection */
904 static struct pci_device_id snd_bt87x_default_ids[] = {
905         BT_DEVICE(878, PCI_ANY_ID, PCI_ANY_ID, 0),
906         BT_DEVICE(879, PCI_ANY_ID, PCI_ANY_ID, 0),
907         { }
908 };
909
910 static struct pci_driver driver = {
911         .name = "Bt87x",
912         .id_table = snd_bt87x_ids,
913         .probe = snd_bt87x_probe,
914         .remove = __devexit_p(snd_bt87x_remove),
915 };
916
917 static int __init alsa_card_bt87x_init(void)
918 {
919         if (load_all)
920                 driver.id_table = snd_bt87x_default_ids;
921         return pci_register_driver(&driver);
922 }
923
924 static void __exit alsa_card_bt87x_exit(void)
925 {
926         pci_unregister_driver(&driver);
927 }
928
929 module_init(alsa_card_bt87x_init)
930 module_exit(alsa_card_bt87x_exit)