Version:  2.6.34 2.6.35 2.6.36 2.6.37 2.6.38 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14

Linux/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 <linux/init.h>
 25 #include <linux/interrupt.h>
 26 #include <linux/pci.h>
 27 #include <linux/slab.h>
 28 #include <linux/module.h>
 29 #include <linux/bitops.h>
 30 #include <asm/io.h>
 31 #include <sound/core.h>
 32 #include <sound/pcm.h>
 33 #include <sound/pcm_params.h>
 34 #include <sound/control.h>
 35 #include <sound/initval.h>
 36 
 37 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
 38 MODULE_DESCRIPTION("Brooktree Bt87x audio driver");
 39 MODULE_LICENSE("GPL");
 40 MODULE_SUPPORTED_DEVICE("{{Brooktree,Bt878},"
 41                 "{Brooktree,Bt879}}");
 42 
 43 static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */
 44 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
 45 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable this card */
 46 static int digital_rate[SNDRV_CARDS];   /* digital input rate */
 47 static bool load_all;   /* allow to load the non-whitelisted cards */
 48 
 49 module_param_array(index, int, NULL, 0444);
 50 MODULE_PARM_DESC(index, "Index value for Bt87x soundcard");
 51 module_param_array(id, charp, NULL, 0444);
 52 MODULE_PARM_DESC(id, "ID string for Bt87x soundcard");
 53 module_param_array(enable, bool, NULL, 0444);
 54 MODULE_PARM_DESC(enable, "Enable Bt87x soundcard");
 55 module_param_array(digital_rate, int, NULL, 0444);
 56 MODULE_PARM_DESC(digital_rate, "Digital input rate for Bt87x soundcard");
 57 module_param(load_all, bool, 0444);
 58 MODULE_PARM_DESC(load_all, "Allow to load the non-whitelisted cards");
 59 
 60 
 61 /* register offsets */
 62 #define REG_INT_STAT            0x100   /* interrupt status */
 63 #define REG_INT_MASK            0x104   /* interrupt mask */
 64 #define REG_GPIO_DMA_CTL        0x10c   /* audio control */
 65 #define REG_PACKET_LEN          0x110   /* audio packet lengths */
 66 #define REG_RISC_STRT_ADD       0x114   /* RISC program start address */
 67 #define REG_RISC_COUNT          0x120   /* RISC program counter */
 68 
 69 /* interrupt bits */
 70 #define INT_OFLOW       (1 <<  3)       /* audio A/D overflow */
 71 #define INT_RISCI       (1 << 11)       /* RISC instruction IRQ bit set */
 72 #define INT_FBUS        (1 << 12)       /* FIFO overrun due to bus access latency */
 73 #define INT_FTRGT       (1 << 13)       /* FIFO overrun due to target latency */
 74 #define INT_FDSR        (1 << 14)       /* FIFO data stream resynchronization */
 75 #define INT_PPERR       (1 << 15)       /* PCI parity error */
 76 #define INT_RIPERR      (1 << 16)       /* RISC instruction parity error */
 77 #define INT_PABORT      (1 << 17)       /* PCI master or target abort */
 78 #define INT_OCERR       (1 << 18)       /* invalid opcode */
 79 #define INT_SCERR       (1 << 19)       /* sync counter overflow */
 80 #define INT_RISC_EN     (1 << 27)       /* DMA controller running */
 81 #define INT_RISCS_SHIFT       28        /* RISC status bits */
 82 
 83 /* audio control bits */
 84 #define CTL_FIFO_ENABLE         (1 <<  0)       /* enable audio data FIFO */
 85 #define CTL_RISC_ENABLE         (1 <<  1)       /* enable audio DMA controller */
 86 #define CTL_PKTP_4              (0 <<  2)       /* packet mode FIFO trigger point - 4 DWORDs */
 87 #define CTL_PKTP_8              (1 <<  2)       /* 8 DWORDs */
 88 #define CTL_PKTP_16             (2 <<  2)       /* 16 DWORDs */
 89 #define CTL_ACAP_EN             (1 <<  4)       /* enable audio capture */
 90 #define CTL_DA_APP              (1 <<  5)       /* GPIO input */
 91 #define CTL_DA_IOM_AFE          (0 <<  6)       /* audio A/D input */
 92 #define CTL_DA_IOM_DA           (1 <<  6)       /* digital audio input */
 93 #define CTL_DA_SDR_SHIFT               8        /* DDF first stage decimation rate */
 94 #define CTL_DA_SDR_MASK         (0xf<< 8)
 95 #define CTL_DA_LMT              (1 << 12)       /* limit audio data values */
 96 #define CTL_DA_ES2              (1 << 13)       /* enable DDF stage 2 */
 97 #define CTL_DA_SBR              (1 << 14)       /* samples rounded to 8 bits */
 98 #define CTL_DA_DPM              (1 << 15)       /* data packet mode */
 99 #define CTL_DA_LRD_SHIFT              16        /* ALRCK delay */
100 #define CTL_DA_MLB              (1 << 21)       /* MSB/LSB format */
101 #define CTL_DA_LRI              (1 << 22)       /* left/right indication */
102 #define CTL_DA_SCE              (1 << 23)       /* sample clock edge */
103 #define CTL_A_SEL_STV           (0 << 24)       /* TV tuner audio input */
104 #define CTL_A_SEL_SFM           (1 << 24)       /* FM audio input */
105 #define CTL_A_SEL_SML           (2 << 24)       /* mic/line audio input */
106 #define CTL_A_SEL_SMXC          (3 << 24)       /* MUX bypass */
107 #define CTL_A_SEL_SHIFT               24
108 #define CTL_A_SEL_MASK          (3 << 24)
109 #define CTL_A_PWRDN             (1 << 26)       /* analog audio power-down */
110 #define CTL_A_G2X               (1 << 27)       /* audio gain boost */
111 #define CTL_A_GAIN_SHIFT              28        /* audio input gain */
112 #define CTL_A_GAIN_MASK         (0xf<<28)
113 
114 /* RISC instruction opcodes */
115 #define RISC_WRITE      (0x1 << 28)     /* write FIFO data to memory at address */
116 #define RISC_WRITEC     (0x5 << 28)     /* write FIFO data to memory at current address */
117 #define RISC_SKIP       (0x2 << 28)     /* skip FIFO data */
118 #define RISC_JUMP       (0x7 << 28)     /* jump to address */
119 #define RISC_SYNC       (0x8 << 28)     /* synchronize with FIFO */
120 
121 /* RISC instruction bits */
122 #define RISC_BYTES_ENABLE       (0xf << 12)     /* byte enable bits */
123 #define RISC_RESYNC             (  1 << 15)     /* disable FDSR errors */
124 #define RISC_SET_STATUS_SHIFT           16      /* set status bits */
125 #define RISC_RESET_STATUS_SHIFT         20      /* clear status bits */
126 #define RISC_IRQ                (  1 << 24)     /* interrupt */
127 #define RISC_EOL                (  1 << 26)     /* end of line */
128 #define RISC_SOL                (  1 << 27)     /* start of line */
129 
130 /* SYNC status bits values */
131 #define RISC_SYNC_FM1   0x6
132 #define RISC_SYNC_VRO   0xc
133 
134 #define ANALOG_CLOCK 1792000
135 #ifdef CONFIG_SND_BT87X_OVERCLOCK
136 #define CLOCK_DIV_MIN 1
137 #else
138 #define CLOCK_DIV_MIN 4
139 #endif
140 #define CLOCK_DIV_MAX 15
141 
142 #define ERROR_INTERRUPTS (INT_FBUS | INT_FTRGT | INT_PPERR | \
143                           INT_RIPERR | INT_PABORT | INT_OCERR)
144 #define MY_INTERRUPTS (INT_RISCI | ERROR_INTERRUPTS)
145 
146 /* SYNC, one WRITE per line, one extra WRITE per page boundary, SYNC, JUMP */
147 #define MAX_RISC_SIZE ((1 + 255 + (PAGE_ALIGN(255 * 4092) / PAGE_SIZE - 1) + 1 + 1) * 8)
148 
149 /* Cards with configuration information */
150 enum snd_bt87x_boardid {
151         SND_BT87X_BOARD_UNKNOWN,
152         SND_BT87X_BOARD_GENERIC,        /* both an & dig interfaces, 32kHz */
153         SND_BT87X_BOARD_ANALOG,         /* board with no external A/D */
154         SND_BT87X_BOARD_OSPREY2x0,
155         SND_BT87X_BOARD_OSPREY440,
156         SND_BT87X_BOARD_AVPHONE98,
157 };
158 
159 /* Card configuration */
160 struct snd_bt87x_board {
161         int dig_rate;           /* Digital input sampling rate */
162         u32 digital_fmt;        /* Register settings for digital input */
163         unsigned no_analog:1;   /* No analog input */
164         unsigned no_digital:1;  /* No digital input */
165 };
166 
167 static struct snd_bt87x_board snd_bt87x_boards[] = {
168         [SND_BT87X_BOARD_UNKNOWN] = {
169                 .dig_rate = 32000, /* just a guess */
170         },
171         [SND_BT87X_BOARD_GENERIC] = {
172                 .dig_rate = 32000,
173         },
174         [SND_BT87X_BOARD_ANALOG] = {
175                 .no_digital = 1,
176         },
177         [SND_BT87X_BOARD_OSPREY2x0] = {
178                 .dig_rate = 44100,
179                 .digital_fmt = CTL_DA_LRI | (1 << CTL_DA_LRD_SHIFT),
180         },
181         [SND_BT87X_BOARD_OSPREY440] = {
182                 .dig_rate = 32000,
183                 .digital_fmt = CTL_DA_LRI | (1 << CTL_DA_LRD_SHIFT),
184                 .no_analog = 1,
185         },
186         [SND_BT87X_BOARD_AVPHONE98] = {
187                 .dig_rate = 48000,
188         },
189 };
190 
191 struct snd_bt87x {
192         struct snd_card *card;
193         struct pci_dev *pci;
194         struct snd_bt87x_board board;
195 
196         void __iomem *mmio;
197         int irq;
198 
199         spinlock_t reg_lock;
200         unsigned long opened;
201         struct snd_pcm_substream *substream;
202 
203         struct snd_dma_buffer dma_risc;
204         unsigned int line_bytes;
205         unsigned int lines;
206 
207         u32 reg_control;
208         u32 interrupt_mask;
209 
210         int current_line;
211 
212         int pci_parity_errors;
213 };
214 
215 enum { DEVICE_DIGITAL, DEVICE_ANALOG };
216 
217 static inline u32 snd_bt87x_readl(struct snd_bt87x *chip, u32 reg)
218 {
219         return readl(chip->mmio + reg);
220 }
221 
222 static inline void snd_bt87x_writel(struct snd_bt87x *chip, u32 reg, u32 value)
223 {
224         writel(value, chip->mmio + reg);
225 }
226 
227 static int snd_bt87x_create_risc(struct snd_bt87x *chip, struct snd_pcm_substream *substream,
228                                  unsigned int periods, unsigned int period_bytes)
229 {
230         unsigned int i, offset;
231         u32 *risc;
232 
233         if (chip->dma_risc.area == NULL) {
234                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
235                                         PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
236                         return -ENOMEM;
237         }
238         risc = (u32 *)chip->dma_risc.area;
239         offset = 0;
240         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
241         *risc++ = cpu_to_le32(0);
242         for (i = 0; i < periods; ++i) {
243                 u32 rest;
244 
245                 rest = period_bytes;
246                 do {
247                         u32 cmd, len;
248                         unsigned int addr;
249 
250                         len = PAGE_SIZE - (offset % PAGE_SIZE);
251                         if (len > rest)
252                                 len = rest;
253                         cmd = RISC_WRITE | len;
254                         if (rest == period_bytes) {
255                                 u32 block = i * 16 / periods;
256                                 cmd |= RISC_SOL;
257                                 cmd |= block << RISC_SET_STATUS_SHIFT;
258                                 cmd |= (~block & 0xf) << RISC_RESET_STATUS_SHIFT;
259                         }
260                         if (len == rest)
261                                 cmd |= RISC_EOL | RISC_IRQ;
262                         *risc++ = cpu_to_le32(cmd);
263                         addr = snd_pcm_sgbuf_get_addr(substream, offset);
264                         *risc++ = cpu_to_le32(addr);
265                         offset += len;
266                         rest -= len;
267                 } while (rest > 0);
268         }
269         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO);
270         *risc++ = cpu_to_le32(0);
271         *risc++ = cpu_to_le32(RISC_JUMP);
272         *risc++ = cpu_to_le32(chip->dma_risc.addr);
273         chip->line_bytes = period_bytes;
274         chip->lines = periods;
275         return 0;
276 }
277 
278 static void snd_bt87x_free_risc(struct snd_bt87x *chip)
279 {
280         if (chip->dma_risc.area) {
281                 snd_dma_free_pages(&chip->dma_risc);
282                 chip->dma_risc.area = NULL;
283         }
284 }
285 
286 static void snd_bt87x_pci_error(struct snd_bt87x *chip, unsigned int status)
287 {
288         u16 pci_status;
289 
290         pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
291         pci_status &= PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
292                 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
293                 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY;
294         pci_write_config_word(chip->pci, PCI_STATUS, pci_status);
295         if (pci_status != PCI_STATUS_DETECTED_PARITY)
296                 snd_printk(KERN_ERR "Aieee - PCI error! status %#08x, PCI status %#04x\n",
297                            status & ERROR_INTERRUPTS, pci_status);
298         else {
299                 snd_printk(KERN_ERR "Aieee - PCI parity error detected!\n");
300                 /* error 'handling' similar to aic7xxx_pci.c: */
301                 chip->pci_parity_errors++;
302                 if (chip->pci_parity_errors > 20) {
303                         snd_printk(KERN_ERR "Too many PCI parity errors observed.\n");
304                         snd_printk(KERN_ERR "Some device on this bus is generating bad parity.\n");
305                         snd_printk(KERN_ERR "This is an error *observed by*, not *generated by*, this card.\n");
306                         snd_printk(KERN_ERR "PCI parity error checking has been disabled.\n");
307                         chip->interrupt_mask &= ~(INT_PPERR | INT_RIPERR);
308                         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
309                 }
310         }
311 }
312 
313 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id)
314 {
315         struct snd_bt87x *chip = dev_id;
316         unsigned int status, irq_status;
317 
318         status = snd_bt87x_readl(chip, REG_INT_STAT);
319         irq_status = status & chip->interrupt_mask;
320         if (!irq_status)
321                 return IRQ_NONE;
322         snd_bt87x_writel(chip, REG_INT_STAT, irq_status);
323 
324         if (irq_status & ERROR_INTERRUPTS) {
325                 if (irq_status & (INT_FBUS | INT_FTRGT))
326                         snd_printk(KERN_WARNING "FIFO overrun, status %#08x\n", status);
327                 if (irq_status & INT_OCERR)
328                         snd_printk(KERN_ERR "internal RISC error, status %#08x\n", status);
329                 if (irq_status & (INT_PPERR | INT_RIPERR | INT_PABORT))
330                         snd_bt87x_pci_error(chip, irq_status);
331         }
332         if ((irq_status & INT_RISCI) && (chip->reg_control & CTL_ACAP_EN)) {
333                 int current_block, irq_block;
334 
335                 /* assume that exactly one line has been recorded */
336                 chip->current_line = (chip->current_line + 1) % chip->lines;
337                 /* but check if some interrupts have been skipped */
338                 current_block = chip->current_line * 16 / chip->lines;
339                 irq_block = status >> INT_RISCS_SHIFT;
340                 if (current_block != irq_block)
341                         chip->current_line = (irq_block * chip->lines + 15) / 16;
342 
343                 snd_pcm_period_elapsed(chip->substream);
344         }
345         return IRQ_HANDLED;
346 }
347 
348 static struct snd_pcm_hardware snd_bt87x_digital_hw = {
349         .info = SNDRV_PCM_INFO_MMAP |
350                 SNDRV_PCM_INFO_INTERLEAVED |
351                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
352                 SNDRV_PCM_INFO_MMAP_VALID |
353                 SNDRV_PCM_INFO_BATCH,
354         .formats = SNDRV_PCM_FMTBIT_S16_LE,
355         .rates = 0, /* set at runtime */
356         .channels_min = 2,
357         .channels_max = 2,
358         .buffer_bytes_max = 255 * 4092,
359         .period_bytes_min = 32,
360         .period_bytes_max = 4092,
361         .periods_min = 2,
362         .periods_max = 255,
363 };
364 
365 static struct snd_pcm_hardware snd_bt87x_analog_hw = {
366         .info = SNDRV_PCM_INFO_MMAP |
367                 SNDRV_PCM_INFO_INTERLEAVED |
368                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
369                 SNDRV_PCM_INFO_MMAP_VALID |
370                 SNDRV_PCM_INFO_BATCH,
371         .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
372         .rates = SNDRV_PCM_RATE_KNOT,
373         .rate_min = ANALOG_CLOCK / CLOCK_DIV_MAX,
374         .rate_max = ANALOG_CLOCK / CLOCK_DIV_MIN,
375         .channels_min = 1,
376         .channels_max = 1,
377         .buffer_bytes_max = 255 * 4092,
378         .period_bytes_min = 32,
379         .period_bytes_max = 4092,
380         .periods_min = 2,
381         .periods_max = 255,
382 };
383 
384 static int snd_bt87x_set_digital_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
385 {
386         chip->reg_control |= CTL_DA_IOM_DA | CTL_A_PWRDN;
387         runtime->hw = snd_bt87x_digital_hw;
388         runtime->hw.rates = snd_pcm_rate_to_rate_bit(chip->board.dig_rate);
389         runtime->hw.rate_min = chip->board.dig_rate;
390         runtime->hw.rate_max = chip->board.dig_rate;
391         return 0;
392 }
393 
394 static int snd_bt87x_set_analog_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
395 {
396         static struct snd_ratnum analog_clock = {
397                 .num = ANALOG_CLOCK,
398                 .den_min = CLOCK_DIV_MIN,
399                 .den_max = CLOCK_DIV_MAX,
400                 .den_step = 1
401         };
402         static struct snd_pcm_hw_constraint_ratnums constraint_rates = {
403                 .nrats = 1,
404                 .rats = &analog_clock
405         };
406 
407         chip->reg_control &= ~(CTL_DA_IOM_DA | CTL_A_PWRDN);
408         runtime->hw = snd_bt87x_analog_hw;
409         return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
410                                              &constraint_rates);
411 }
412 
413 static int snd_bt87x_pcm_open(struct snd_pcm_substream *substream)
414 {
415         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
416         struct snd_pcm_runtime *runtime = substream->runtime;
417         int err;
418 
419         if (test_and_set_bit(0, &chip->opened))
420                 return -EBUSY;
421 
422         if (substream->pcm->device == DEVICE_DIGITAL)
423                 err = snd_bt87x_set_digital_hw(chip, runtime);
424         else
425                 err = snd_bt87x_set_analog_hw(chip, runtime);
426         if (err < 0)
427                 goto _error;
428 
429         err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
430         if (err < 0)
431                 goto _error;
432 
433         chip->substream = substream;
434         return 0;
435 
436 _error:
437         clear_bit(0, &chip->opened);
438         smp_mb__after_clear_bit();
439         return err;
440 }
441 
442 static int snd_bt87x_close(struct snd_pcm_substream *substream)
443 {
444         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
445 
446         spin_lock_irq(&chip->reg_lock);
447         chip->reg_control |= CTL_A_PWRDN;
448         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
449         spin_unlock_irq(&chip->reg_lock);
450 
451         chip->substream = NULL;
452         clear_bit(0, &chip->opened);
453         smp_mb__after_clear_bit();
454         return 0;
455 }
456 
457 static int snd_bt87x_hw_params(struct snd_pcm_substream *substream,
458                                struct snd_pcm_hw_params *hw_params)
459 {
460         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
461         int err;
462 
463         err = snd_pcm_lib_malloc_pages(substream,
464                                        params_buffer_bytes(hw_params));
465         if (err < 0)
466                 return err;
467         return snd_bt87x_create_risc(chip, substream,
468                                      params_periods(hw_params),
469                                      params_period_bytes(hw_params));
470 }
471 
472 static int snd_bt87x_hw_free(struct snd_pcm_substream *substream)
473 {
474         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
475 
476         snd_bt87x_free_risc(chip);
477         snd_pcm_lib_free_pages(substream);
478         return 0;
479 }
480 
481 static int snd_bt87x_prepare(struct snd_pcm_substream *substream)
482 {
483         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
484         struct snd_pcm_runtime *runtime = substream->runtime;
485         int decimation;
486 
487         spin_lock_irq(&chip->reg_lock);
488         chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
489         decimation = (ANALOG_CLOCK + runtime->rate / 4) / runtime->rate;
490         chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
491         if (runtime->format == SNDRV_PCM_FORMAT_S8)
492                 chip->reg_control |= CTL_DA_SBR;
493         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
494         spin_unlock_irq(&chip->reg_lock);
495         return 0;
496 }
497 
498 static int snd_bt87x_start(struct snd_bt87x *chip)
499 {
500         spin_lock(&chip->reg_lock);
501         chip->current_line = 0;
502         chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
503         snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
504         snd_bt87x_writel(chip, REG_PACKET_LEN,
505                          chip->line_bytes | (chip->lines << 16));
506         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
507         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
508         spin_unlock(&chip->reg_lock);
509         return 0;
510 }
511 
512 static int snd_bt87x_stop(struct snd_bt87x *chip)
513 {
514         spin_lock(&chip->reg_lock);
515         chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
516         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
517         snd_bt87x_writel(chip, REG_INT_MASK, 0);
518         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
519         spin_unlock(&chip->reg_lock);
520         return 0;
521 }
522 
523 static int snd_bt87x_trigger(struct snd_pcm_substream *substream, int cmd)
524 {
525         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
526 
527         switch (cmd) {
528         case SNDRV_PCM_TRIGGER_START:
529                 return snd_bt87x_start(chip);
530         case SNDRV_PCM_TRIGGER_STOP:
531                 return snd_bt87x_stop(chip);
532         default:
533                 return -EINVAL;
534         }
535 }
536 
537 static snd_pcm_uframes_t snd_bt87x_pointer(struct snd_pcm_substream *substream)
538 {
539         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
540         struct snd_pcm_runtime *runtime = substream->runtime;
541 
542         return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
543 }
544 
545 static struct snd_pcm_ops snd_bt87x_pcm_ops = {
546         .open = snd_bt87x_pcm_open,
547         .close = snd_bt87x_close,
548         .ioctl = snd_pcm_lib_ioctl,
549         .hw_params = snd_bt87x_hw_params,
550         .hw_free = snd_bt87x_hw_free,
551         .prepare = snd_bt87x_prepare,
552         .trigger = snd_bt87x_trigger,
553         .pointer = snd_bt87x_pointer,
554         .page = snd_pcm_sgbuf_ops_page,
555 };
556 
557 static int snd_bt87x_capture_volume_info(struct snd_kcontrol *kcontrol,
558                                          struct snd_ctl_elem_info *info)
559 {
560         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
561         info->count = 1;
562         info->value.integer.min = 0;
563         info->value.integer.max = 15;
564         return 0;
565 }
566 
567 static int snd_bt87x_capture_volume_get(struct snd_kcontrol *kcontrol,
568                                         struct snd_ctl_elem_value *value)
569 {
570         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
571 
572         value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
573         return 0;
574 }
575 
576 static int snd_bt87x_capture_volume_put(struct snd_kcontrol *kcontrol,
577                                         struct snd_ctl_elem_value *value)
578 {
579         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
580         u32 old_control;
581         int changed;
582 
583         spin_lock_irq(&chip->reg_lock);
584         old_control = chip->reg_control;
585         chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
586                 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
587         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
588         changed = old_control != chip->reg_control;
589         spin_unlock_irq(&chip->reg_lock);
590         return changed;
591 }
592 
593 static struct snd_kcontrol_new snd_bt87x_capture_volume = {
594         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
595         .name = "Capture Volume",
596         .info = snd_bt87x_capture_volume_info,
597         .get = snd_bt87x_capture_volume_get,
598         .put = snd_bt87x_capture_volume_put,
599 };
600 
601 #define snd_bt87x_capture_boost_info    snd_ctl_boolean_mono_info
602 
603 static int snd_bt87x_capture_boost_get(struct snd_kcontrol *kcontrol,
604                                        struct snd_ctl_elem_value *value)
605 {
606         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
607 
608         value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
609         return 0;
610 }
611 
612 static int snd_bt87x_capture_boost_put(struct snd_kcontrol *kcontrol,
613                                        struct snd_ctl_elem_value *value)
614 {
615         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
616         u32 old_control;
617         int changed;
618 
619         spin_lock_irq(&chip->reg_lock);
620         old_control = chip->reg_control;
621         chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
622                 | (value->value.integer.value[0] ? CTL_A_G2X : 0);
623         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
624         changed = chip->reg_control != old_control;
625         spin_unlock_irq(&chip->reg_lock);
626         return changed;
627 }
628 
629 static struct snd_kcontrol_new snd_bt87x_capture_boost = {
630         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
631         .name = "Capture Boost",
632         .info = snd_bt87x_capture_boost_info,
633         .get = snd_bt87x_capture_boost_get,
634         .put = snd_bt87x_capture_boost_put,
635 };
636 
637 static int snd_bt87x_capture_source_info(struct snd_kcontrol *kcontrol,
638                                          struct snd_ctl_elem_info *info)
639 {
640         static const char *const texts[3] = {"TV Tuner", "FM", "Mic/Line"};
641 
642         return snd_ctl_enum_info(info, 1, 3, texts);
643 }
644 
645 static int snd_bt87x_capture_source_get(struct snd_kcontrol *kcontrol,
646                                         struct snd_ctl_elem_value *value)
647 {
648         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
649 
650         value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
651         return 0;
652 }
653 
654 static int snd_bt87x_capture_source_put(struct snd_kcontrol *kcontrol,
655                                         struct snd_ctl_elem_value *value)
656 {
657         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
658         u32 old_control;
659         int changed;
660 
661         spin_lock_irq(&chip->reg_lock);
662         old_control = chip->reg_control;
663         chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
664                 | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
665         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
666         changed = chip->reg_control != old_control;
667         spin_unlock_irq(&chip->reg_lock);
668         return changed;
669 }
670 
671 static struct snd_kcontrol_new snd_bt87x_capture_source = {
672         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
673         .name = "Capture Source",
674         .info = snd_bt87x_capture_source_info,
675         .get = snd_bt87x_capture_source_get,
676         .put = snd_bt87x_capture_source_put,
677 };
678 
679 static int snd_bt87x_free(struct snd_bt87x *chip)
680 {
681         if (chip->mmio)
682                 snd_bt87x_stop(chip);
683         if (chip->irq >= 0)
684                 free_irq(chip->irq, chip);
685         if (chip->mmio)
686                 iounmap(chip->mmio);
687         pci_release_regions(chip->pci);
688         pci_disable_device(chip->pci);
689         kfree(chip);
690         return 0;
691 }
692 
693 static int snd_bt87x_dev_free(struct snd_device *device)
694 {
695         struct snd_bt87x *chip = device->device_data;
696         return snd_bt87x_free(chip);
697 }
698 
699 static int snd_bt87x_pcm(struct snd_bt87x *chip, int device, char *name)
700 {
701         int err;
702         struct snd_pcm *pcm;
703 
704         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
705         if (err < 0)
706                 return err;
707         pcm->private_data = chip;
708         strcpy(pcm->name, name);
709         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
710         return snd_pcm_lib_preallocate_pages_for_all(pcm,
711                                                      SNDRV_DMA_TYPE_DEV_SG,
712                                                      snd_dma_pci_data(chip->pci),
713                                                         128 * 1024,
714                                                         ALIGN(255 * 4092, 1024));
715 }
716 
717 static int snd_bt87x_create(struct snd_card *card,
718                             struct pci_dev *pci,
719                             struct snd_bt87x **rchip)
720 {
721         struct snd_bt87x *chip;
722         int err;
723         static struct snd_device_ops ops = {
724                 .dev_free = snd_bt87x_dev_free
725         };
726 
727         *rchip = NULL;
728 
729         err = pci_enable_device(pci);
730         if (err < 0)
731                 return err;
732 
733         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
734         if (!chip) {
735                 pci_disable_device(pci);
736                 return -ENOMEM;
737         }
738         chip->card = card;
739         chip->pci = pci;
740         chip->irq = -1;
741         spin_lock_init(&chip->reg_lock);
742 
743         if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) {
744                 kfree(chip);
745                 pci_disable_device(pci);
746                 return err;
747         }
748         chip->mmio = pci_ioremap_bar(pci, 0);
749         if (!chip->mmio) {
750                 snd_printk(KERN_ERR "cannot remap io memory\n");
751                 err = -ENOMEM;
752                 goto fail;
753         }
754 
755         chip->reg_control = CTL_A_PWRDN | CTL_DA_ES2 |
756                             CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
757         chip->interrupt_mask = MY_INTERRUPTS;
758         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
759         snd_bt87x_writel(chip, REG_INT_MASK, 0);
760         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
761 
762         err = request_irq(pci->irq, snd_bt87x_interrupt, IRQF_SHARED,
763                           KBUILD_MODNAME, chip);
764         if (err < 0) {
765                 snd_printk(KERN_ERR "cannot grab irq %d\n", pci->irq);
766                 goto fail;
767         }
768         chip->irq = pci->irq;
769         pci_set_master(pci);
770         synchronize_irq(chip->irq);
771 
772         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
773         if (err < 0)
774                 goto fail;
775 
776         snd_card_set_dev(card, &pci->dev);
777         *rchip = chip;
778         return 0;
779 
780 fail:
781         snd_bt87x_free(chip);
782         return err;
783 }
784 
785 #define BT_DEVICE(chip, subvend, subdev, id) \
786         { .vendor = PCI_VENDOR_ID_BROOKTREE, \
787           .device = chip, \
788           .subvendor = subvend, .subdevice = subdev, \
789           .driver_data = SND_BT87X_BOARD_ ## id }
790 /* driver_data is the card id for that device */
791 
792 static DEFINE_PCI_DEVICE_TABLE(snd_bt87x_ids) = {
793         /* Hauppauge WinTV series */
794         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0x13eb, GENERIC),
795         /* Hauppauge WinTV series */
796         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, 0x0070, 0x13eb, GENERIC),
797         /* Viewcast Osprey 200 */
798         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff01, OSPREY2x0),
799         /* Viewcast Osprey 440 (rate is configurable via gpio) */
800         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff07, OSPREY440),
801         /* ATI TV-Wonder */
802         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1002, 0x0001, GENERIC),
803         /* Leadtek Winfast tv 2000xp delux */
804         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x107d, 0x6606, GENERIC),
805         /* Pinnacle PCTV */
806         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x11bd, 0x0012, GENERIC),
807         /* Voodoo TV 200 */
808         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x121a, 0x3000, GENERIC),
809         /* Askey Computer Corp. MagicTView'99 */
810         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x144f, 0x3000, GENERIC),
811         /* AVerMedia Studio No. 103, 203, ...? */
812         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1461, 0x0003, AVPHONE98),
813         /* Prolink PixelView PV-M4900 */
814         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1554, 0x4011, GENERIC),
815         /* Pinnacle  Studio PCTV rave */
816         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0xbd11, 0x1200, GENERIC),
817         { }
818 };
819 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
820 
821 /* cards known not to have audio
822  * (DVB cards use the audio function to transfer MPEG data) */
823 static struct {
824         unsigned short subvendor, subdevice;
825 } blacklist[] = {
826         {0x0071, 0x0101}, /* Nebula Electronics DigiTV */
827         {0x11bd, 0x001c}, /* Pinnacle PCTV Sat */
828         {0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */
829         {0x1461, 0x0761}, /* AVermedia AverTV DVB-T */
830         {0x1461, 0x0771}, /* AVermedia DVB-T 771 */
831         {0x1822, 0x0001}, /* Twinhan VisionPlus DVB-T */
832         {0x18ac, 0xd500}, /* DVICO FusionHDTV 5 Lite */
833         {0x18ac, 0xdb10}, /* DVICO FusionHDTV DVB-T Lite */
834         {0x18ac, 0xdb11}, /* Ultraview DVB-T Lite */
835         {0x270f, 0xfc00}, /* Chaintech Digitop DST-1000 DVB-S */
836         {0x7063, 0x2000}, /* pcHDTV HD-2000 TV */
837 };
838 
839 static struct pci_driver driver;
840 
841 /* return the id of the card, or a negative value if it's blacklisted */
842 static int snd_bt87x_detect_card(struct pci_dev *pci)
843 {
844         int i;
845         const struct pci_device_id *supported;
846 
847         supported = pci_match_id(snd_bt87x_ids, pci);
848         if (supported && supported->driver_data > 0)
849                 return supported->driver_data;
850 
851         for (i = 0; i < ARRAY_SIZE(blacklist); ++i)
852                 if (blacklist[i].subvendor == pci->subsystem_vendor &&
853                     blacklist[i].subdevice == pci->subsystem_device) {
854                         snd_printdd(KERN_INFO "card %#04x-%#04x:%#04x has no audio\n",
855                                     pci->device, pci->subsystem_vendor, pci->subsystem_device);
856                         return -EBUSY;
857                 }
858 
859         snd_printk(KERN_INFO "unknown card %#04x-%#04x:%#04x\n",
860                    pci->device, pci->subsystem_vendor, pci->subsystem_device);
861         snd_printk(KERN_DEBUG "please mail id, board name, and, "
862                    "if it works, the correct digital_rate option to "
863                    "<alsa-devel@alsa-project.org>\n");
864         return SND_BT87X_BOARD_UNKNOWN;
865 }
866 
867 static int snd_bt87x_probe(struct pci_dev *pci,
868                            const struct pci_device_id *pci_id)
869 {
870         static int dev;
871         struct snd_card *card;
872         struct snd_bt87x *chip;
873         int err;
874         enum snd_bt87x_boardid boardid;
875 
876         if (!pci_id->driver_data) {
877                 err = snd_bt87x_detect_card(pci);
878                 if (err < 0)
879                         return -ENODEV;
880                 boardid = err;
881         } else
882                 boardid = pci_id->driver_data;
883 
884         if (dev >= SNDRV_CARDS)
885                 return -ENODEV;
886         if (!enable[dev]) {
887                 ++dev;
888                 return -ENOENT;
889         }
890 
891         err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
892         if (err < 0)
893                 return err;
894 
895         err = snd_bt87x_create(card, pci, &chip);
896         if (err < 0)
897                 goto _error;
898 
899         memcpy(&chip->board, &snd_bt87x_boards[boardid], sizeof(chip->board));
900 
901         if (!chip->board.no_digital) {
902                 if (digital_rate[dev] > 0)
903                         chip->board.dig_rate = digital_rate[dev];
904 
905                 chip->reg_control |= chip->board.digital_fmt;
906 
907                 err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
908                 if (err < 0)
909                         goto _error;
910         }
911         if (!chip->board.no_analog) {
912                 err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
913                 if (err < 0)
914                         goto _error;
915                 err = snd_ctl_add(card, snd_ctl_new1(
916                                   &snd_bt87x_capture_volume, chip));
917                 if (err < 0)
918                         goto _error;
919                 err = snd_ctl_add(card, snd_ctl_new1(
920                                   &snd_bt87x_capture_boost, chip));
921                 if (err < 0)
922                         goto _error;
923                 err = snd_ctl_add(card, snd_ctl_new1(
924                                   &snd_bt87x_capture_source, chip));
925                 if (err < 0)
926                         goto _error;
927         }
928         snd_printk(KERN_INFO "bt87x%d: Using board %d, %sanalog, %sdigital "
929                    "(rate %d Hz)\n", dev, boardid,
930                    chip->board.no_analog ? "no " : "",
931                    chip->board.no_digital ? "no " : "", chip->board.dig_rate);
932 
933         strcpy(card->driver, "Bt87x");
934         sprintf(card->shortname, "Brooktree Bt%x", pci->device);
935         sprintf(card->longname, "%s at %#llx, irq %i",
936                 card->shortname, (unsigned long long)pci_resource_start(pci, 0),
937                 chip->irq);
938         strcpy(card->mixername, "Bt87x");
939 
940         err = snd_card_register(card);
941         if (err < 0)
942                 goto _error;
943 
944         pci_set_drvdata(pci, card);
945         ++dev;
946         return 0;
947 
948 _error:
949         snd_card_free(card);
950         return err;
951 }
952 
953 static void snd_bt87x_remove(struct pci_dev *pci)
954 {
955         snd_card_free(pci_get_drvdata(pci));
956 }
957 
958 /* default entries for all Bt87x cards - it's not exported */
959 /* driver_data is set to 0 to call detection */
960 static DEFINE_PCI_DEVICE_TABLE(snd_bt87x_default_ids) = {
961         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, PCI_ANY_ID, PCI_ANY_ID, UNKNOWN),
962         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, PCI_ANY_ID, PCI_ANY_ID, UNKNOWN),
963         { }
964 };
965 
966 static struct pci_driver driver = {
967         .name = KBUILD_MODNAME,
968         .id_table = snd_bt87x_ids,
969         .probe = snd_bt87x_probe,
970         .remove = snd_bt87x_remove,
971 };
972 
973 static int __init alsa_card_bt87x_init(void)
974 {
975         if (load_all)
976                 driver.id_table = snd_bt87x_default_ids;
977         return pci_register_driver(&driver);
978 }
979 
980 static void __exit alsa_card_bt87x_exit(void)
981 {
982         pci_unregister_driver(&driver);
983 }
984 
985 module_init(alsa_card_bt87x_init)
986 module_exit(alsa_card_bt87x_exit)
987 

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