3 * hda_intel.c - Implementation of primary alsa driver code base
6 * Copyright(c) 2004 Intel Corporation. All rights reserved.
8 * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
9 * PeiSen Hou <pshou@realtek.com.tw>
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the Free
13 * Software Foundation; either version 2 of the License, or (at your option)
16 * This program is distributed in the hope that it will be useful, but WITHOUT
17 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
21 * You should have received a copy of the GNU General Public License along with
22 * this program; if not, write to the Free Software Foundation, Inc., 59
23 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
27 * Matt Jared matt.jared@intel.com
28 * Andy Kopp andy.kopp@intel.com
29 * Dan Kogan dan.d.kogan@intel.com
33 * 2004.12.01 Major rewrite by tiwai, merged the work of pshou
38 #include <linux/delay.h>
39 #include <linux/interrupt.h>
40 #include <linux/kernel.h>
41 #include <linux/module.h>
42 #include <linux/dma-mapping.h>
43 #include <linux/moduleparam.h>
44 #include <linux/init.h>
45 #include <linux/slab.h>
46 #include <linux/pci.h>
47 #include <linux/mutex.h>
48 #include <linux/reboot.h>
49 #include <sound/core.h>
50 #include <sound/initval.h>
51 #include "hda_codec.h"
54 static int index
[SNDRV_CARDS
] = SNDRV_DEFAULT_IDX
;
55 static char *id
[SNDRV_CARDS
] = SNDRV_DEFAULT_STR
;
56 static int enable
[SNDRV_CARDS
] = SNDRV_DEFAULT_ENABLE_PNP
;
57 static char *model
[SNDRV_CARDS
];
58 static int position_fix
[SNDRV_CARDS
];
59 static int bdl_pos_adj
[SNDRV_CARDS
] = {[0 ... (SNDRV_CARDS
-1)] = -1};
60 static int probe_mask
[SNDRV_CARDS
] = {[0 ... (SNDRV_CARDS
-1)] = -1};
61 static int probe_only
[SNDRV_CARDS
];
62 static int single_cmd
;
63 static int enable_msi
= -1;
64 #ifdef CONFIG_SND_HDA_PATCH_LOADER
65 static char *patch
[SNDRV_CARDS
];
67 #ifdef CONFIG_SND_HDA_INPUT_BEEP
68 static int beep_mode
[SNDRV_CARDS
] = {[0 ... (SNDRV_CARDS
-1)] =
69 CONFIG_SND_HDA_INPUT_BEEP_MODE
};
72 module_param_array(index
, int, NULL
, 0444);
73 MODULE_PARM_DESC(index
, "Index value for Intel HD audio interface.");
74 module_param_array(id
, charp
, NULL
, 0444);
75 MODULE_PARM_DESC(id
, "ID string for Intel HD audio interface.");
76 module_param_array(enable
, bool, NULL
, 0444);
77 MODULE_PARM_DESC(enable
, "Enable Intel HD audio interface.");
78 module_param_array(model
, charp
, NULL
, 0444);
79 MODULE_PARM_DESC(model
, "Use the given board model.");
80 module_param_array(position_fix
, int, NULL
, 0444);
81 MODULE_PARM_DESC(position_fix
, "Fix DMA pointer "
82 "(0 = auto, 1 = none, 2 = POSBUF).");
83 module_param_array(bdl_pos_adj
, int, NULL
, 0644);
84 MODULE_PARM_DESC(bdl_pos_adj
, "BDL position adjustment offset.");
85 module_param_array(probe_mask
, int, NULL
, 0444);
86 MODULE_PARM_DESC(probe_mask
, "Bitmask to probe codecs (default = -1).");
87 module_param_array(probe_only
, bool, NULL
, 0444);
88 MODULE_PARM_DESC(probe_only
, "Only probing and no codec initialization.");
89 module_param(single_cmd
, bool, 0444);
90 MODULE_PARM_DESC(single_cmd
, "Use single command to communicate with codecs "
91 "(for debugging only).");
92 module_param(enable_msi
, int, 0444);
93 MODULE_PARM_DESC(enable_msi
, "Enable Message Signaled Interrupt (MSI)");
94 #ifdef CONFIG_SND_HDA_PATCH_LOADER
95 module_param_array(patch
, charp
, NULL
, 0444);
96 MODULE_PARM_DESC(patch
, "Patch file for Intel HD audio interface.");
98 #ifdef CONFIG_SND_HDA_INPUT_BEEP
99 module_param_array(beep_mode
, int, NULL
, 0444);
100 MODULE_PARM_DESC(beep_mode
, "Select HDA Beep registration mode "
101 "(0=off, 1=on, 2=mute switch on/off) (default=1).");
104 #ifdef CONFIG_SND_HDA_POWER_SAVE
105 static int power_save
= CONFIG_SND_HDA_POWER_SAVE_DEFAULT
;
106 module_param(power_save
, int, 0644);
107 MODULE_PARM_DESC(power_save
, "Automatic power-saving timeout "
108 "(in second, 0 = disable).");
110 /* reset the HD-audio controller in power save mode.
111 * this may give more power-saving, but will take longer time to
114 static int power_save_controller
= 1;
115 module_param(power_save_controller
, bool, 0644);
116 MODULE_PARM_DESC(power_save_controller
, "Reset controller in power save mode.");
119 MODULE_LICENSE("GPL");
120 MODULE_SUPPORTED_DEVICE("{{Intel, ICH6},"
145 MODULE_DESCRIPTION("Intel HDA driver");
147 #ifdef CONFIG_SND_VERBOSE_PRINTK
148 #define SFX /* nop */
150 #define SFX "hda-intel: "
156 #define ICH6_REG_GCAP 0x00
157 #define ICH6_GCAP_64OK (1 << 0) /* 64bit address support */
158 #define ICH6_GCAP_NSDO (3 << 1) /* # of serial data out signals */
159 #define ICH6_GCAP_BSS (31 << 3) /* # of bidirectional streams */
160 #define ICH6_GCAP_ISS (15 << 8) /* # of input streams */
161 #define ICH6_GCAP_OSS (15 << 12) /* # of output streams */
162 #define ICH6_REG_VMIN 0x02
163 #define ICH6_REG_VMAJ 0x03
164 #define ICH6_REG_OUTPAY 0x04
165 #define ICH6_REG_INPAY 0x06
166 #define ICH6_REG_GCTL 0x08
167 #define ICH6_GCTL_RESET (1 << 0) /* controller reset */
168 #define ICH6_GCTL_FCNTRL (1 << 1) /* flush control */
169 #define ICH6_GCTL_UNSOL (1 << 8) /* accept unsol. response enable */
170 #define ICH6_REG_WAKEEN 0x0c
171 #define ICH6_REG_STATESTS 0x0e
172 #define ICH6_REG_GSTS 0x10
173 #define ICH6_GSTS_FSTS (1 << 1) /* flush status */
174 #define ICH6_REG_INTCTL 0x20
175 #define ICH6_REG_INTSTS 0x24
176 #define ICH6_REG_WALCLK 0x30
177 #define ICH6_REG_SYNC 0x34
178 #define ICH6_REG_CORBLBASE 0x40
179 #define ICH6_REG_CORBUBASE 0x44
180 #define ICH6_REG_CORBWP 0x48
181 #define ICH6_REG_CORBRP 0x4a
182 #define ICH6_CORBRP_RST (1 << 15) /* read pointer reset */
183 #define ICH6_REG_CORBCTL 0x4c
184 #define ICH6_CORBCTL_RUN (1 << 1) /* enable DMA */
185 #define ICH6_CORBCTL_CMEIE (1 << 0) /* enable memory error irq */
186 #define ICH6_REG_CORBSTS 0x4d
187 #define ICH6_CORBSTS_CMEI (1 << 0) /* memory error indication */
188 #define ICH6_REG_CORBSIZE 0x4e
190 #define ICH6_REG_RIRBLBASE 0x50
191 #define ICH6_REG_RIRBUBASE 0x54
192 #define ICH6_REG_RIRBWP 0x58
193 #define ICH6_RIRBWP_RST (1 << 15) /* write pointer reset */
194 #define ICH6_REG_RINTCNT 0x5a
195 #define ICH6_REG_RIRBCTL 0x5c
196 #define ICH6_RBCTL_IRQ_EN (1 << 0) /* enable IRQ */
197 #define ICH6_RBCTL_DMA_EN (1 << 1) /* enable DMA */
198 #define ICH6_RBCTL_OVERRUN_EN (1 << 2) /* enable overrun irq */
199 #define ICH6_REG_RIRBSTS 0x5d
200 #define ICH6_RBSTS_IRQ (1 << 0) /* response irq */
201 #define ICH6_RBSTS_OVERRUN (1 << 2) /* overrun irq */
202 #define ICH6_REG_RIRBSIZE 0x5e
204 #define ICH6_REG_IC 0x60
205 #define ICH6_REG_IR 0x64
206 #define ICH6_REG_IRS 0x68
207 #define ICH6_IRS_VALID (1<<1)
208 #define ICH6_IRS_BUSY (1<<0)
210 #define ICH6_REG_DPLBASE 0x70
211 #define ICH6_REG_DPUBASE 0x74
212 #define ICH6_DPLBASE_ENABLE 0x1 /* Enable position buffer */
214 /* SD offset: SDI0=0x80, SDI1=0xa0, ... SDO3=0x160 */
215 enum { SDI0
, SDI1
, SDI2
, SDI3
, SDO0
, SDO1
, SDO2
, SDO3
};
217 /* stream register offsets from stream base */
218 #define ICH6_REG_SD_CTL 0x00
219 #define ICH6_REG_SD_STS 0x03
220 #define ICH6_REG_SD_LPIB 0x04
221 #define ICH6_REG_SD_CBL 0x08
222 #define ICH6_REG_SD_LVI 0x0c
223 #define ICH6_REG_SD_FIFOW 0x0e
224 #define ICH6_REG_SD_FIFOSIZE 0x10
225 #define ICH6_REG_SD_FORMAT 0x12
226 #define ICH6_REG_SD_BDLPL 0x18
227 #define ICH6_REG_SD_BDLPU 0x1c
230 #define ICH6_PCIREG_TCSEL 0x44
236 /* max number of SDs */
237 /* ICH, ATI and VIA have 4 playback and 4 capture */
238 #define ICH6_NUM_CAPTURE 4
239 #define ICH6_NUM_PLAYBACK 4
241 /* ULI has 6 playback and 5 capture */
242 #define ULI_NUM_CAPTURE 5
243 #define ULI_NUM_PLAYBACK 6
245 /* ATI HDMI has 1 playback and 0 capture */
246 #define ATIHDMI_NUM_CAPTURE 0
247 #define ATIHDMI_NUM_PLAYBACK 1
249 /* TERA has 4 playback and 3 capture */
250 #define TERA_NUM_CAPTURE 3
251 #define TERA_NUM_PLAYBACK 4
253 /* this number is statically defined for simplicity */
254 #define MAX_AZX_DEV 16
256 /* max number of fragments - we may use more if allocating more pages for BDL */
257 #define BDL_SIZE 4096
258 #define AZX_MAX_BDL_ENTRIES (BDL_SIZE / 16)
259 #define AZX_MAX_FRAG 32
260 /* max buffer size - no h/w limit, you can increase as you like */
261 #define AZX_MAX_BUF_SIZE (1024*1024*1024)
262 /* max number of PCM devics per card */
263 #define AZX_MAX_PCMS 8
265 /* RIRB int mask: overrun[2], response[0] */
266 #define RIRB_INT_RESPONSE 0x01
267 #define RIRB_INT_OVERRUN 0x04
268 #define RIRB_INT_MASK 0x05
270 /* STATESTS int mask: S3,SD2,SD1,SD0 */
271 #define AZX_MAX_CODECS 4
272 #define STATESTS_INT_MASK ((1 << AZX_MAX_CODECS) - 1)
275 #define SD_CTL_STREAM_RESET 0x01 /* stream reset bit */
276 #define SD_CTL_DMA_START 0x02 /* stream DMA start bit */
277 #define SD_CTL_STRIPE (3 << 16) /* stripe control */
278 #define SD_CTL_TRAFFIC_PRIO (1 << 18) /* traffic priority */
279 #define SD_CTL_DIR (1 << 19) /* bi-directional stream */
280 #define SD_CTL_STREAM_TAG_MASK (0xf << 20)
281 #define SD_CTL_STREAM_TAG_SHIFT 20
283 /* SD_CTL and SD_STS */
284 #define SD_INT_DESC_ERR 0x10 /* descriptor error interrupt */
285 #define SD_INT_FIFO_ERR 0x08 /* FIFO error interrupt */
286 #define SD_INT_COMPLETE 0x04 /* completion interrupt */
287 #define SD_INT_MASK (SD_INT_DESC_ERR|SD_INT_FIFO_ERR|\
291 #define SD_STS_FIFO_READY 0x20 /* FIFO ready */
293 /* INTCTL and INTSTS */
294 #define ICH6_INT_ALL_STREAM 0xff /* all stream interrupts */
295 #define ICH6_INT_CTRL_EN 0x40000000 /* controller interrupt enable bit */
296 #define ICH6_INT_GLOBAL_EN 0x80000000 /* global interrupt enable bit */
298 /* below are so far hardcoded - should read registers in future */
299 #define ICH6_MAX_CORB_ENTRIES 256
300 #define ICH6_MAX_RIRB_ENTRIES 256
302 /* position fix mode */
309 /* Defines for ATI HD Audio support in SB450 south bridge */
310 #define ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR 0x42
311 #define ATI_SB450_HDAUDIO_ENABLE_SNOOP 0x02
313 /* Defines for Nvidia HDA support */
314 #define NVIDIA_HDA_TRANSREG_ADDR 0x4e
315 #define NVIDIA_HDA_ENABLE_COHBITS 0x0f
316 #define NVIDIA_HDA_ISTRM_COH 0x4d
317 #define NVIDIA_HDA_OSTRM_COH 0x4c
318 #define NVIDIA_HDA_ENABLE_COHBIT 0x01
320 /* Defines for Intel SCH HDA snoop control */
321 #define INTEL_SCH_HDA_DEVC 0x78
322 #define INTEL_SCH_HDA_DEVC_NOSNOOP (0x1<<11)
324 /* Define IN stream 0 FIFO size offset in VIA controller */
325 #define VIA_IN_STREAM0_FIFO_SIZE_OFFSET 0x90
326 /* Define VIA HD Audio Device ID*/
327 #define VIA_HDAC_DEVICE_ID 0x3288
329 /* HD Audio class code */
330 #define PCI_CLASS_MULTIMEDIA_HD_AUDIO 0x0403
336 struct snd_dma_buffer bdl
; /* BDL buffer */
337 u32
*posbuf
; /* position buffer pointer */
339 unsigned int bufsize
; /* size of the play buffer in bytes */
340 unsigned int period_bytes
; /* size of the period in bytes */
341 unsigned int frags
; /* number for period in the play buffer */
342 unsigned int fifo_size
; /* FIFO size */
343 unsigned long start_jiffies
; /* start + minimum jiffies */
344 unsigned long min_jiffies
; /* minimum jiffies before position is valid */
346 void __iomem
*sd_addr
; /* stream descriptor pointer */
348 u32 sd_int_sta_mask
; /* stream int status mask */
351 struct snd_pcm_substream
*substream
; /* assigned substream,
354 unsigned int format_val
; /* format value to be set in the
355 * controller and the codec
357 unsigned char stream_tag
; /* assigned stream */
358 unsigned char index
; /* stream index */
359 int device
; /* last device number assigned to */
361 unsigned int opened
:1;
362 unsigned int running
:1;
363 unsigned int irq_pending
:1;
364 unsigned int start_flag
: 1; /* stream full start flag */
367 * A flag to ensure DMA position is 0
368 * when link position is not greater than FIFO size
370 unsigned int insufficient
:1;
375 u32
*buf
; /* CORB/RIRB buffer
376 * Each CORB entry is 4byte, RIRB is 8byte
378 dma_addr_t addr
; /* physical address of CORB/RIRB buffer */
380 unsigned short rp
, wp
; /* read/write pointers */
381 int cmds
[AZX_MAX_CODECS
]; /* number of pending requests */
382 u32 res
[AZX_MAX_CODECS
]; /* last read value */
386 struct snd_card
*card
;
390 /* chip type specific */
392 int playback_streams
;
393 int playback_index_offset
;
395 int capture_index_offset
;
400 void __iomem
*remap_addr
;
405 struct mutex open_mutex
;
407 /* streams (x num_streams) */
408 struct azx_dev
*azx_dev
;
411 struct snd_pcm
*pcm
[AZX_MAX_PCMS
];
414 unsigned short codec_mask
;
415 int codec_probe_mask
; /* copied from probe_mask option */
417 unsigned int beep_mode
;
423 /* CORB/RIRB and position buffers */
424 struct snd_dma_buffer rb
;
425 struct snd_dma_buffer posbuf
;
429 unsigned int running
:1;
430 unsigned int initialized
:1;
431 unsigned int single_cmd
:1;
432 unsigned int polling_mode
:1;
434 unsigned int irq_pending_warned
:1;
435 unsigned int via_dmapos_patch
:1; /* enable DMA-position fix for VIA */
436 unsigned int probing
:1; /* codec probing phase */
439 unsigned int last_cmd
[AZX_MAX_CODECS
];
441 /* for pending irqs */
442 struct work_struct irq_pending_work
;
444 /* reboot notifier (for mysterious hangup problem at power-down) */
445 struct notifier_block reboot_notifier
;
460 AZX_NUM_DRIVERS
, /* keep this as last entry */
463 static char *driver_short_names
[] __devinitdata
= {
464 [AZX_DRIVER_ICH
] = "HDA Intel",
465 [AZX_DRIVER_SCH
] = "HDA Intel MID",
466 [AZX_DRIVER_ATI
] = "HDA ATI SB",
467 [AZX_DRIVER_ATIHDMI
] = "HDA ATI HDMI",
468 [AZX_DRIVER_VIA
] = "HDA VIA VT82xx",
469 [AZX_DRIVER_SIS
] = "HDA SIS966",
470 [AZX_DRIVER_ULI
] = "HDA ULI M5461",
471 [AZX_DRIVER_NVIDIA
] = "HDA NVidia",
472 [AZX_DRIVER_TERA
] = "HDA Teradici",
473 [AZX_DRIVER_GENERIC
] = "HD-Audio Generic",
477 * macros for easy use
479 #define azx_writel(chip,reg,value) \
480 writel(value, (chip)->remap_addr + ICH6_REG_##reg)
481 #define azx_readl(chip,reg) \
482 readl((chip)->remap_addr + ICH6_REG_##reg)
483 #define azx_writew(chip,reg,value) \
484 writew(value, (chip)->remap_addr + ICH6_REG_##reg)
485 #define azx_readw(chip,reg) \
486 readw((chip)->remap_addr + ICH6_REG_##reg)
487 #define azx_writeb(chip,reg,value) \
488 writeb(value, (chip)->remap_addr + ICH6_REG_##reg)
489 #define azx_readb(chip,reg) \
490 readb((chip)->remap_addr + ICH6_REG_##reg)
492 #define azx_sd_writel(dev,reg,value) \
493 writel(value, (dev)->sd_addr + ICH6_REG_##reg)
494 #define azx_sd_readl(dev,reg) \
495 readl((dev)->sd_addr + ICH6_REG_##reg)
496 #define azx_sd_writew(dev,reg,value) \
497 writew(value, (dev)->sd_addr + ICH6_REG_##reg)
498 #define azx_sd_readw(dev,reg) \
499 readw((dev)->sd_addr + ICH6_REG_##reg)
500 #define azx_sd_writeb(dev,reg,value) \
501 writeb(value, (dev)->sd_addr + ICH6_REG_##reg)
502 #define azx_sd_readb(dev,reg) \
503 readb((dev)->sd_addr + ICH6_REG_##reg)
505 /* for pcm support */
506 #define get_azx_dev(substream) (substream->runtime->private_data)
508 static int azx_acquire_irq(struct azx
*chip
, int do_disconnect
);
511 * Interface for HD codec
515 * CORB / RIRB interface
517 static int azx_alloc_cmd_io(struct azx
*chip
)
521 /* single page (at least 4096 bytes) must suffice for both ringbuffes */
522 err
= snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV
,
523 snd_dma_pci_data(chip
->pci
),
524 PAGE_SIZE
, &chip
->rb
);
526 snd_printk(KERN_ERR SFX
"cannot allocate CORB/RIRB\n");
532 static void azx_init_cmd_io(struct azx
*chip
)
534 spin_lock_irq(&chip
->reg_lock
);
536 chip
->corb
.addr
= chip
->rb
.addr
;
537 chip
->corb
.buf
= (u32
*)chip
->rb
.area
;
538 azx_writel(chip
, CORBLBASE
, (u32
)chip
->corb
.addr
);
539 azx_writel(chip
, CORBUBASE
, upper_32_bits(chip
->corb
.addr
));
541 /* set the corb size to 256 entries (ULI requires explicitly) */
542 azx_writeb(chip
, CORBSIZE
, 0x02);
543 /* set the corb write pointer to 0 */
544 azx_writew(chip
, CORBWP
, 0);
545 /* reset the corb hw read pointer */
546 azx_writew(chip
, CORBRP
, ICH6_CORBRP_RST
);
547 /* enable corb dma */
548 azx_writeb(chip
, CORBCTL
, ICH6_CORBCTL_RUN
);
551 chip
->rirb
.addr
= chip
->rb
.addr
+ 2048;
552 chip
->rirb
.buf
= (u32
*)(chip
->rb
.area
+ 2048);
553 chip
->rirb
.wp
= chip
->rirb
.rp
= 0;
554 memset(chip
->rirb
.cmds
, 0, sizeof(chip
->rirb
.cmds
));
555 azx_writel(chip
, RIRBLBASE
, (u32
)chip
->rirb
.addr
);
556 azx_writel(chip
, RIRBUBASE
, upper_32_bits(chip
->rirb
.addr
));
558 /* set the rirb size to 256 entries (ULI requires explicitly) */
559 azx_writeb(chip
, RIRBSIZE
, 0x02);
560 /* reset the rirb hw write pointer */
561 azx_writew(chip
, RIRBWP
, ICH6_RIRBWP_RST
);
562 /* set N=1, get RIRB response interrupt for new entry */
563 azx_writew(chip
, RINTCNT
, 1);
564 /* enable rirb dma and response irq */
565 azx_writeb(chip
, RIRBCTL
, ICH6_RBCTL_DMA_EN
| ICH6_RBCTL_IRQ_EN
);
566 spin_unlock_irq(&chip
->reg_lock
);
569 static void azx_free_cmd_io(struct azx
*chip
)
571 spin_lock_irq(&chip
->reg_lock
);
572 /* disable ringbuffer DMAs */
573 azx_writeb(chip
, RIRBCTL
, 0);
574 azx_writeb(chip
, CORBCTL
, 0);
575 spin_unlock_irq(&chip
->reg_lock
);
578 static unsigned int azx_command_addr(u32 cmd
)
580 unsigned int addr
= cmd
>> 28;
582 if (addr
>= AZX_MAX_CODECS
) {
590 static unsigned int azx_response_addr(u32 res
)
592 unsigned int addr
= res
& 0xf;
594 if (addr
>= AZX_MAX_CODECS
) {
603 static int azx_corb_send_cmd(struct hda_bus
*bus
, u32 val
)
605 struct azx
*chip
= bus
->private_data
;
606 unsigned int addr
= azx_command_addr(val
);
609 spin_lock_irq(&chip
->reg_lock
);
611 /* add command to corb */
612 wp
= azx_readb(chip
, CORBWP
);
614 wp
%= ICH6_MAX_CORB_ENTRIES
;
616 chip
->rirb
.cmds
[addr
]++;
617 chip
->corb
.buf
[wp
] = cpu_to_le32(val
);
618 azx_writel(chip
, CORBWP
, wp
);
620 spin_unlock_irq(&chip
->reg_lock
);
625 #define ICH6_RIRB_EX_UNSOL_EV (1<<4)
627 /* retrieve RIRB entry - called from interrupt handler */
628 static void azx_update_rirb(struct azx
*chip
)
634 wp
= azx_readb(chip
, RIRBWP
);
635 if (wp
== chip
->rirb
.wp
)
639 while (chip
->rirb
.rp
!= wp
) {
641 chip
->rirb
.rp
%= ICH6_MAX_RIRB_ENTRIES
;
643 rp
= chip
->rirb
.rp
<< 1; /* an RIRB entry is 8-bytes */
644 res_ex
= le32_to_cpu(chip
->rirb
.buf
[rp
+ 1]);
645 res
= le32_to_cpu(chip
->rirb
.buf
[rp
]);
646 addr
= azx_response_addr(res_ex
);
647 if (res_ex
& ICH6_RIRB_EX_UNSOL_EV
)
648 snd_hda_queue_unsol_event(chip
->bus
, res
, res_ex
);
649 else if (chip
->rirb
.cmds
[addr
]) {
650 chip
->rirb
.res
[addr
] = res
;
652 chip
->rirb
.cmds
[addr
]--;
654 snd_printk(KERN_ERR SFX
"spurious response %#x:%#x, "
657 chip
->last_cmd
[addr
]);
661 /* receive a response */
662 static unsigned int azx_rirb_get_response(struct hda_bus
*bus
,
665 struct azx
*chip
= bus
->private_data
;
666 unsigned long timeout
;
669 timeout
= jiffies
+ msecs_to_jiffies(1000);
671 if (chip
->polling_mode
) {
672 spin_lock_irq(&chip
->reg_lock
);
673 azx_update_rirb(chip
);
674 spin_unlock_irq(&chip
->reg_lock
);
676 if (!chip
->rirb
.cmds
[addr
]) {
679 return chip
->rirb
.res
[addr
]; /* the last value */
681 if (time_after(jiffies
, timeout
))
683 if (bus
->needs_damn_long_delay
)
684 msleep(2); /* temporary workaround */
691 if (!chip
->polling_mode
) {
692 snd_printk(KERN_WARNING SFX
"azx_get_response timeout, "
693 "switching to polling mode: last cmd=0x%08x\n",
694 chip
->last_cmd
[addr
]);
695 chip
->polling_mode
= 1;
700 snd_printk(KERN_WARNING SFX
"No response from codec, "
701 "disabling MSI: last cmd=0x%08x\n",
702 chip
->last_cmd
[addr
]);
703 free_irq(chip
->irq
, chip
);
705 pci_disable_msi(chip
->pci
);
707 if (azx_acquire_irq(chip
, 1) < 0) {
715 /* If this critical timeout happens during the codec probing
716 * phase, this is likely an access to a non-existing codec
717 * slot. Better to return an error and reset the system.
722 /* a fatal communication error; need either to reset or to fallback
723 * to the single_cmd mode
726 if (bus
->allow_bus_reset
&& !bus
->response_reset
&& !bus
->in_reset
) {
727 bus
->response_reset
= 1;
728 return -1; /* give a chance to retry */
731 snd_printk(KERN_ERR
"hda_intel: azx_get_response timeout, "
732 "switching to single_cmd mode: last cmd=0x%08x\n",
733 chip
->last_cmd
[addr
]);
734 chip
->single_cmd
= 1;
735 bus
->response_reset
= 0;
736 /* release CORB/RIRB */
737 azx_free_cmd_io(chip
);
738 /* disable unsolicited responses */
739 azx_writel(chip
, GCTL
, azx_readl(chip
, GCTL
) & ~ICH6_GCTL_UNSOL
);
744 * Use the single immediate command instead of CORB/RIRB for simplicity
746 * Note: according to Intel, this is not preferred use. The command was
747 * intended for the BIOS only, and may get confused with unsolicited
748 * responses. So, we shouldn't use it for normal operation from the
750 * I left the codes, however, for debugging/testing purposes.
753 /* receive a response */
754 static int azx_single_wait_for_response(struct azx
*chip
, unsigned int addr
)
759 /* check IRV busy bit */
760 if (azx_readw(chip
, IRS
) & ICH6_IRS_VALID
) {
761 /* reuse rirb.res as the response return value */
762 chip
->rirb
.res
[addr
] = azx_readl(chip
, IR
);
767 if (printk_ratelimit())
768 snd_printd(SFX
"get_response timeout: IRS=0x%x\n",
769 azx_readw(chip
, IRS
));
770 chip
->rirb
.res
[addr
] = -1;
775 static int azx_single_send_cmd(struct hda_bus
*bus
, u32 val
)
777 struct azx
*chip
= bus
->private_data
;
778 unsigned int addr
= azx_command_addr(val
);
783 /* check ICB busy bit */
784 if (!((azx_readw(chip
, IRS
) & ICH6_IRS_BUSY
))) {
785 /* Clear IRV valid bit */
786 azx_writew(chip
, IRS
, azx_readw(chip
, IRS
) |
788 azx_writel(chip
, IC
, val
);
789 azx_writew(chip
, IRS
, azx_readw(chip
, IRS
) |
791 return azx_single_wait_for_response(chip
, addr
);
795 if (printk_ratelimit())
796 snd_printd(SFX
"send_cmd timeout: IRS=0x%x, val=0x%x\n",
797 azx_readw(chip
, IRS
), val
);
801 /* receive a response */
802 static unsigned int azx_single_get_response(struct hda_bus
*bus
,
805 struct azx
*chip
= bus
->private_data
;
806 return chip
->rirb
.res
[addr
];
810 * The below are the main callbacks from hda_codec.
812 * They are just the skeleton to call sub-callbacks according to the
813 * current setting of chip->single_cmd.
817 static int azx_send_cmd(struct hda_bus
*bus
, unsigned int val
)
819 struct azx
*chip
= bus
->private_data
;
821 chip
->last_cmd
[azx_command_addr(val
)] = val
;
822 if (chip
->single_cmd
)
823 return azx_single_send_cmd(bus
, val
);
825 return azx_corb_send_cmd(bus
, val
);
829 static unsigned int azx_get_response(struct hda_bus
*bus
,
832 struct azx
*chip
= bus
->private_data
;
833 if (chip
->single_cmd
)
834 return azx_single_get_response(bus
, addr
);
836 return azx_rirb_get_response(bus
, addr
);
839 #ifdef CONFIG_SND_HDA_POWER_SAVE
840 static void azx_power_notify(struct hda_bus
*bus
);
843 /* reset codec link */
844 static int azx_reset(struct azx
*chip
)
849 azx_writeb(chip
, STATESTS
, STATESTS_INT_MASK
);
851 /* reset controller */
852 azx_writel(chip
, GCTL
, azx_readl(chip
, GCTL
) & ~ICH6_GCTL_RESET
);
855 while (azx_readb(chip
, GCTL
) && --count
)
858 /* delay for >= 100us for codec PLL to settle per spec
859 * Rev 0.9 section 5.5.1
863 /* Bring controller out of reset */
864 azx_writeb(chip
, GCTL
, azx_readb(chip
, GCTL
) | ICH6_GCTL_RESET
);
867 while (!azx_readb(chip
, GCTL
) && --count
)
870 /* Brent Chartrand said to wait >= 540us for codecs to initialize */
873 /* check to see if controller is ready */
874 if (!azx_readb(chip
, GCTL
)) {
875 snd_printd(SFX
"azx_reset: controller not ready!\n");
879 /* Accept unsolicited responses */
880 if (!chip
->single_cmd
)
881 azx_writel(chip
, GCTL
, azx_readl(chip
, GCTL
) |
885 if (!chip
->codec_mask
) {
886 chip
->codec_mask
= azx_readw(chip
, STATESTS
);
887 snd_printdd(SFX
"codec_mask = 0x%x\n", chip
->codec_mask
);
898 /* enable interrupts */
899 static void azx_int_enable(struct azx
*chip
)
901 /* enable controller CIE and GIE */
902 azx_writel(chip
, INTCTL
, azx_readl(chip
, INTCTL
) |
903 ICH6_INT_CTRL_EN
| ICH6_INT_GLOBAL_EN
);
906 /* disable interrupts */
907 static void azx_int_disable(struct azx
*chip
)
911 /* disable interrupts in stream descriptor */
912 for (i
= 0; i
< chip
->num_streams
; i
++) {
913 struct azx_dev
*azx_dev
= &chip
->azx_dev
[i
];
914 azx_sd_writeb(azx_dev
, SD_CTL
,
915 azx_sd_readb(azx_dev
, SD_CTL
) & ~SD_INT_MASK
);
918 /* disable SIE for all streams */
919 azx_writeb(chip
, INTCTL
, 0);
921 /* disable controller CIE and GIE */
922 azx_writel(chip
, INTCTL
, azx_readl(chip
, INTCTL
) &
923 ~(ICH6_INT_CTRL_EN
| ICH6_INT_GLOBAL_EN
));
926 /* clear interrupts */
927 static void azx_int_clear(struct azx
*chip
)
931 /* clear stream status */
932 for (i
= 0; i
< chip
->num_streams
; i
++) {
933 struct azx_dev
*azx_dev
= &chip
->azx_dev
[i
];
934 azx_sd_writeb(azx_dev
, SD_STS
, SD_INT_MASK
);
938 azx_writeb(chip
, STATESTS
, STATESTS_INT_MASK
);
940 /* clear rirb status */
941 azx_writeb(chip
, RIRBSTS
, RIRB_INT_MASK
);
943 /* clear int status */
944 azx_writel(chip
, INTSTS
, ICH6_INT_CTRL_EN
| ICH6_INT_ALL_STREAM
);
948 static void azx_stream_start(struct azx
*chip
, struct azx_dev
*azx_dev
)
951 * Before stream start, initialize parameter
953 azx_dev
->insufficient
= 1;
956 azx_writeb(chip
, INTCTL
,
957 azx_readb(chip
, INTCTL
) | (1 << azx_dev
->index
));
958 /* set DMA start and interrupt mask */
959 azx_sd_writeb(azx_dev
, SD_CTL
, azx_sd_readb(azx_dev
, SD_CTL
) |
960 SD_CTL_DMA_START
| SD_INT_MASK
);
964 static void azx_stream_clear(struct azx
*chip
, struct azx_dev
*azx_dev
)
966 azx_sd_writeb(azx_dev
, SD_CTL
, azx_sd_readb(azx_dev
, SD_CTL
) &
967 ~(SD_CTL_DMA_START
| SD_INT_MASK
));
968 azx_sd_writeb(azx_dev
, SD_STS
, SD_INT_MASK
); /* to be sure */
972 static void azx_stream_stop(struct azx
*chip
, struct azx_dev
*azx_dev
)
974 azx_stream_clear(chip
, azx_dev
);
976 azx_writeb(chip
, INTCTL
,
977 azx_readb(chip
, INTCTL
) & ~(1 << azx_dev
->index
));
982 * reset and start the controller registers
984 static void azx_init_chip(struct azx
*chip
)
986 if (chip
->initialized
)
989 /* reset controller */
992 /* initialize interrupts */
994 azx_int_enable(chip
);
996 /* initialize the codec command I/O */
997 if (!chip
->single_cmd
)
998 azx_init_cmd_io(chip
);
1000 /* program the position buffer */
1001 azx_writel(chip
, DPLBASE
, (u32
)chip
->posbuf
.addr
);
1002 azx_writel(chip
, DPUBASE
, upper_32_bits(chip
->posbuf
.addr
));
1004 chip
->initialized
= 1;
1008 * initialize the PCI registers
1010 /* update bits in a PCI register byte */
1011 static void update_pci_byte(struct pci_dev
*pci
, unsigned int reg
,
1012 unsigned char mask
, unsigned char val
)
1016 pci_read_config_byte(pci
, reg
, &data
);
1018 data
|= (val
& mask
);
1019 pci_write_config_byte(pci
, reg
, data
);
1022 static void azx_init_pci(struct azx
*chip
)
1024 unsigned short snoop
;
1026 /* Clear bits 0-2 of PCI register TCSEL (at offset 0x44)
1027 * TCSEL == Traffic Class Select Register, which sets PCI express QOS
1028 * Ensuring these bits are 0 clears playback static on some HD Audio
1031 update_pci_byte(chip
->pci
, ICH6_PCIREG_TCSEL
, 0x07, 0);
1033 switch (chip
->driver_type
) {
1034 case AZX_DRIVER_ATI
:
1035 /* For ATI SB450 azalia HD audio, we need to enable snoop */
1036 update_pci_byte(chip
->pci
,
1037 ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR
,
1038 0x07, ATI_SB450_HDAUDIO_ENABLE_SNOOP
);
1040 case AZX_DRIVER_NVIDIA
:
1041 /* For NVIDIA HDA, enable snoop */
1042 update_pci_byte(chip
->pci
,
1043 NVIDIA_HDA_TRANSREG_ADDR
,
1044 0x0f, NVIDIA_HDA_ENABLE_COHBITS
);
1045 update_pci_byte(chip
->pci
,
1046 NVIDIA_HDA_ISTRM_COH
,
1047 0x01, NVIDIA_HDA_ENABLE_COHBIT
);
1048 update_pci_byte(chip
->pci
,
1049 NVIDIA_HDA_OSTRM_COH
,
1050 0x01, NVIDIA_HDA_ENABLE_COHBIT
);
1052 case AZX_DRIVER_SCH
:
1053 pci_read_config_word(chip
->pci
, INTEL_SCH_HDA_DEVC
, &snoop
);
1054 if (snoop
& INTEL_SCH_HDA_DEVC_NOSNOOP
) {
1055 pci_write_config_word(chip
->pci
, INTEL_SCH_HDA_DEVC
,
1056 snoop
& (~INTEL_SCH_HDA_DEVC_NOSNOOP
));
1057 pci_read_config_word(chip
->pci
,
1058 INTEL_SCH_HDA_DEVC
, &snoop
);
1059 snd_printdd(SFX
"HDA snoop disabled, enabling ... %s\n",
1060 (snoop
& INTEL_SCH_HDA_DEVC_NOSNOOP
)
1069 static int azx_position_ok(struct azx
*chip
, struct azx_dev
*azx_dev
);
1074 static irqreturn_t
azx_interrupt(int irq
, void *dev_id
)
1076 struct azx
*chip
= dev_id
;
1077 struct azx_dev
*azx_dev
;
1081 spin_lock(&chip
->reg_lock
);
1083 status
= azx_readl(chip
, INTSTS
);
1085 spin_unlock(&chip
->reg_lock
);
1089 for (i
= 0; i
< chip
->num_streams
; i
++) {
1090 azx_dev
= &chip
->azx_dev
[i
];
1091 if (status
& azx_dev
->sd_int_sta_mask
) {
1092 azx_sd_writeb(azx_dev
, SD_STS
, SD_INT_MASK
);
1093 if (!azx_dev
->substream
|| !azx_dev
->running
)
1095 /* check whether this IRQ is really acceptable */
1096 ok
= azx_position_ok(chip
, azx_dev
);
1098 azx_dev
->irq_pending
= 0;
1099 spin_unlock(&chip
->reg_lock
);
1100 snd_pcm_period_elapsed(azx_dev
->substream
);
1101 spin_lock(&chip
->reg_lock
);
1102 } else if (ok
== 0 && chip
->bus
&& chip
->bus
->workq
) {
1103 /* bogus IRQ, process it later */
1104 azx_dev
->irq_pending
= 1;
1105 queue_work(chip
->bus
->workq
,
1106 &chip
->irq_pending_work
);
1111 /* clear rirb int */
1112 status
= azx_readb(chip
, RIRBSTS
);
1113 if (status
& RIRB_INT_MASK
) {
1114 if (status
& RIRB_INT_RESPONSE
)
1115 azx_update_rirb(chip
);
1116 azx_writeb(chip
, RIRBSTS
, RIRB_INT_MASK
);
1120 /* clear state status int */
1121 if (azx_readb(chip
, STATESTS
) & 0x04)
1122 azx_writeb(chip
, STATESTS
, 0x04);
1124 spin_unlock(&chip
->reg_lock
);
1131 * set up a BDL entry
1133 static int setup_bdle(struct snd_pcm_substream
*substream
,
1134 struct azx_dev
*azx_dev
, u32
**bdlp
,
1135 int ofs
, int size
, int with_ioc
)
1143 if (azx_dev
->frags
>= AZX_MAX_BDL_ENTRIES
)
1146 addr
= snd_pcm_sgbuf_get_addr(substream
, ofs
);
1147 /* program the address field of the BDL entry */
1148 bdl
[0] = cpu_to_le32((u32
)addr
);
1149 bdl
[1] = cpu_to_le32(upper_32_bits(addr
));
1150 /* program the size field of the BDL entry */
1151 chunk
= snd_pcm_sgbuf_get_chunk_size(substream
, ofs
, size
);
1152 bdl
[2] = cpu_to_le32(chunk
);
1153 /* program the IOC to enable interrupt
1154 * only when the whole fragment is processed
1157 bdl
[3] = (size
|| !with_ioc
) ? 0 : cpu_to_le32(0x01);
1167 * set up BDL entries
1169 static int azx_setup_periods(struct azx
*chip
,
1170 struct snd_pcm_substream
*substream
,
1171 struct azx_dev
*azx_dev
)
1174 int i
, ofs
, periods
, period_bytes
;
1177 /* reset BDL address */
1178 azx_sd_writel(azx_dev
, SD_BDLPL
, 0);
1179 azx_sd_writel(azx_dev
, SD_BDLPU
, 0);
1181 period_bytes
= azx_dev
->period_bytes
;
1182 periods
= azx_dev
->bufsize
/ period_bytes
;
1184 /* program the initial BDL entries */
1185 bdl
= (u32
*)azx_dev
->bdl
.area
;
1188 pos_adj
= bdl_pos_adj
[chip
->dev_index
];
1190 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1191 int pos_align
= pos_adj
;
1192 pos_adj
= (pos_adj
* runtime
->rate
+ 47999) / 48000;
1194 pos_adj
= pos_align
;
1196 pos_adj
= ((pos_adj
+ pos_align
- 1) / pos_align
) *
1198 pos_adj
= frames_to_bytes(runtime
, pos_adj
);
1199 if (pos_adj
>= period_bytes
) {
1200 snd_printk(KERN_WARNING SFX
"Too big adjustment %d\n",
1201 bdl_pos_adj
[chip
->dev_index
]);
1204 ofs
= setup_bdle(substream
, azx_dev
,
1205 &bdl
, ofs
, pos_adj
, 1);
1211 for (i
= 0; i
< periods
; i
++) {
1212 if (i
== periods
- 1 && pos_adj
)
1213 ofs
= setup_bdle(substream
, azx_dev
, &bdl
, ofs
,
1214 period_bytes
- pos_adj
, 0);
1216 ofs
= setup_bdle(substream
, azx_dev
, &bdl
, ofs
,
1224 snd_printk(KERN_ERR SFX
"Too many BDL entries: buffer=%d, period=%d\n",
1225 azx_dev
->bufsize
, period_bytes
);
1230 static void azx_stream_reset(struct azx
*chip
, struct azx_dev
*azx_dev
)
1235 azx_stream_clear(chip
, azx_dev
);
1237 azx_sd_writeb(azx_dev
, SD_CTL
, azx_sd_readb(azx_dev
, SD_CTL
) |
1238 SD_CTL_STREAM_RESET
);
1241 while (!((val
= azx_sd_readb(azx_dev
, SD_CTL
)) & SD_CTL_STREAM_RESET
) &&
1244 val
&= ~SD_CTL_STREAM_RESET
;
1245 azx_sd_writeb(azx_dev
, SD_CTL
, val
);
1249 /* waiting for hardware to report that the stream is out of reset */
1250 while (((val
= azx_sd_readb(azx_dev
, SD_CTL
)) & SD_CTL_STREAM_RESET
) &&
1254 /* reset first position - may not be synced with hw at this time */
1255 *azx_dev
->posbuf
= 0;
1259 * set up the SD for streaming
1261 static int azx_setup_controller(struct azx
*chip
, struct azx_dev
*azx_dev
)
1263 /* make sure the run bit is zero for SD */
1264 azx_stream_clear(chip
, azx_dev
);
1265 /* program the stream_tag */
1266 azx_sd_writel(azx_dev
, SD_CTL
,
1267 (azx_sd_readl(azx_dev
, SD_CTL
) & ~SD_CTL_STREAM_TAG_MASK
)|
1268 (azx_dev
->stream_tag
<< SD_CTL_STREAM_TAG_SHIFT
));
1270 /* program the length of samples in cyclic buffer */
1271 azx_sd_writel(azx_dev
, SD_CBL
, azx_dev
->bufsize
);
1273 /* program the stream format */
1274 /* this value needs to be the same as the one programmed */
1275 azx_sd_writew(azx_dev
, SD_FORMAT
, azx_dev
->format_val
);
1277 /* program the stream LVI (last valid index) of the BDL */
1278 azx_sd_writew(azx_dev
, SD_LVI
, azx_dev
->frags
- 1);
1280 /* program the BDL address */
1281 /* lower BDL address */
1282 azx_sd_writel(azx_dev
, SD_BDLPL
, (u32
)azx_dev
->bdl
.addr
);
1283 /* upper BDL address */
1284 azx_sd_writel(azx_dev
, SD_BDLPU
, upper_32_bits(azx_dev
->bdl
.addr
));
1286 /* enable the position buffer */
1287 if (chip
->position_fix
== POS_FIX_POSBUF
||
1288 chip
->position_fix
== POS_FIX_AUTO
||
1289 chip
->via_dmapos_patch
) {
1290 if (!(azx_readl(chip
, DPLBASE
) & ICH6_DPLBASE_ENABLE
))
1291 azx_writel(chip
, DPLBASE
,
1292 (u32
)chip
->posbuf
.addr
| ICH6_DPLBASE_ENABLE
);
1295 /* set the interrupt enable bits in the descriptor control register */
1296 azx_sd_writel(azx_dev
, SD_CTL
,
1297 azx_sd_readl(azx_dev
, SD_CTL
) | SD_INT_MASK
);
1303 * Probe the given codec address
1305 static int probe_codec(struct azx
*chip
, int addr
)
1307 unsigned int cmd
= (addr
<< 28) | (AC_NODE_ROOT
<< 20) |
1308 (AC_VERB_PARAMETERS
<< 8) | AC_PAR_VENDOR_ID
;
1311 mutex_lock(&chip
->bus
->cmd_mutex
);
1313 azx_send_cmd(chip
->bus
, cmd
);
1314 res
= azx_get_response(chip
->bus
, addr
);
1316 mutex_unlock(&chip
->bus
->cmd_mutex
);
1319 snd_printdd(SFX
"codec #%d probed OK\n", addr
);
1323 static int azx_attach_pcm_stream(struct hda_bus
*bus
, struct hda_codec
*codec
,
1324 struct hda_pcm
*cpcm
);
1325 static void azx_stop_chip(struct azx
*chip
);
1327 static void azx_bus_reset(struct hda_bus
*bus
)
1329 struct azx
*chip
= bus
->private_data
;
1332 azx_stop_chip(chip
);
1333 azx_init_chip(chip
);
1335 if (chip
->initialized
) {
1338 for (i
= 0; i
< AZX_MAX_PCMS
; i
++)
1339 snd_pcm_suspend_all(chip
->pcm
[i
]);
1340 snd_hda_suspend(chip
->bus
);
1341 snd_hda_resume(chip
->bus
);
1348 * Codec initialization
1351 /* number of codec slots for each chipset: 0 = default slots (i.e. 4) */
1352 static unsigned int azx_max_codecs
[AZX_NUM_DRIVERS
] __devinitdata
= {
1353 [AZX_DRIVER_TERA
] = 1,
1356 static int __devinit
azx_codec_create(struct azx
*chip
, const char *model
)
1358 struct hda_bus_template bus_temp
;
1362 memset(&bus_temp
, 0, sizeof(bus_temp
));
1363 bus_temp
.private_data
= chip
;
1364 bus_temp
.modelname
= model
;
1365 bus_temp
.pci
= chip
->pci
;
1366 bus_temp
.ops
.command
= azx_send_cmd
;
1367 bus_temp
.ops
.get_response
= azx_get_response
;
1368 bus_temp
.ops
.attach_pcm
= azx_attach_pcm_stream
;
1369 bus_temp
.ops
.bus_reset
= azx_bus_reset
;
1370 #ifdef CONFIG_SND_HDA_POWER_SAVE
1371 bus_temp
.power_save
= &power_save
;
1372 bus_temp
.ops
.pm_notify
= azx_power_notify
;
1375 err
= snd_hda_bus_new(chip
->card
, &bus_temp
, &chip
->bus
);
1379 if (chip
->driver_type
== AZX_DRIVER_NVIDIA
)
1380 chip
->bus
->needs_damn_long_delay
= 1;
1383 max_slots
= azx_max_codecs
[chip
->driver_type
];
1385 max_slots
= AZX_MAX_CODECS
;
1387 /* First try to probe all given codec slots */
1388 for (c
= 0; c
< max_slots
; c
++) {
1389 if ((chip
->codec_mask
& (1 << c
)) & chip
->codec_probe_mask
) {
1390 if (probe_codec(chip
, c
) < 0) {
1391 /* Some BIOSen give you wrong codec addresses
1394 snd_printk(KERN_WARNING SFX
1395 "Codec #%d probe error; "
1396 "disabling it...\n", c
);
1397 chip
->codec_mask
&= ~(1 << c
);
1398 /* More badly, accessing to a non-existing
1399 * codec often screws up the controller chip,
1400 * and distrubs the further communications.
1401 * Thus if an error occurs during probing,
1402 * better to reset the controller chip to
1403 * get back to the sanity state.
1405 azx_stop_chip(chip
);
1406 azx_init_chip(chip
);
1411 /* Then create codec instances */
1412 for (c
= 0; c
< max_slots
; c
++) {
1413 if ((chip
->codec_mask
& (1 << c
)) & chip
->codec_probe_mask
) {
1414 struct hda_codec
*codec
;
1415 err
= snd_hda_codec_new(chip
->bus
, c
, &codec
);
1418 codec
->beep_mode
= chip
->beep_mode
;
1423 snd_printk(KERN_ERR SFX
"no codecs initialized\n");
1429 /* configure each codec instance */
1430 static int __devinit
azx_codec_configure(struct azx
*chip
)
1432 struct hda_codec
*codec
;
1433 list_for_each_entry(codec
, &chip
->bus
->codec_list
, list
) {
1434 snd_hda_codec_configure(codec
);
1444 /* assign a stream for the PCM */
1445 static inline struct azx_dev
*
1446 azx_assign_device(struct azx
*chip
, struct snd_pcm_substream
*substream
)
1449 struct azx_dev
*res
= NULL
;
1451 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
1452 dev
= chip
->playback_index_offset
;
1453 nums
= chip
->playback_streams
;
1455 dev
= chip
->capture_index_offset
;
1456 nums
= chip
->capture_streams
;
1458 for (i
= 0; i
< nums
; i
++, dev
++)
1459 if (!chip
->azx_dev
[dev
].opened
) {
1460 res
= &chip
->azx_dev
[dev
];
1461 if (res
->device
== substream
->pcm
->device
)
1466 res
->device
= substream
->pcm
->device
;
1471 /* release the assigned stream */
1472 static inline void azx_release_device(struct azx_dev
*azx_dev
)
1474 azx_dev
->opened
= 0;
1477 static struct snd_pcm_hardware azx_pcm_hw
= {
1478 .info
= (SNDRV_PCM_INFO_MMAP
|
1479 SNDRV_PCM_INFO_INTERLEAVED
|
1480 SNDRV_PCM_INFO_BLOCK_TRANSFER
|
1481 SNDRV_PCM_INFO_MMAP_VALID
|
1482 /* No full-resume yet implemented */
1483 /* SNDRV_PCM_INFO_RESUME |*/
1484 SNDRV_PCM_INFO_PAUSE
|
1485 SNDRV_PCM_INFO_SYNC_START
),
1486 .formats
= SNDRV_PCM_FMTBIT_S16_LE
,
1487 .rates
= SNDRV_PCM_RATE_48000
,
1492 .buffer_bytes_max
= AZX_MAX_BUF_SIZE
,
1493 .period_bytes_min
= 128,
1494 .period_bytes_max
= AZX_MAX_BUF_SIZE
/ 2,
1496 .periods_max
= AZX_MAX_FRAG
,
1502 struct hda_codec
*codec
;
1503 struct hda_pcm_stream
*hinfo
[2];
1506 static int azx_pcm_open(struct snd_pcm_substream
*substream
)
1508 struct azx_pcm
*apcm
= snd_pcm_substream_chip(substream
);
1509 struct hda_pcm_stream
*hinfo
= apcm
->hinfo
[substream
->stream
];
1510 struct azx
*chip
= apcm
->chip
;
1511 struct azx_dev
*azx_dev
;
1512 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1513 unsigned long flags
;
1516 mutex_lock(&chip
->open_mutex
);
1517 azx_dev
= azx_assign_device(chip
, substream
);
1518 if (azx_dev
== NULL
) {
1519 mutex_unlock(&chip
->open_mutex
);
1522 runtime
->hw
= azx_pcm_hw
;
1523 runtime
->hw
.channels_min
= hinfo
->channels_min
;
1524 runtime
->hw
.channels_max
= hinfo
->channels_max
;
1525 runtime
->hw
.formats
= hinfo
->formats
;
1526 runtime
->hw
.rates
= hinfo
->rates
;
1527 snd_pcm_limit_hw_rates(runtime
);
1528 snd_pcm_hw_constraint_integer(runtime
, SNDRV_PCM_HW_PARAM_PERIODS
);
1529 snd_pcm_hw_constraint_step(runtime
, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES
,
1531 snd_pcm_hw_constraint_step(runtime
, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES
,
1533 snd_hda_power_up(apcm
->codec
);
1534 err
= hinfo
->ops
.open(hinfo
, apcm
->codec
, substream
);
1536 azx_release_device(azx_dev
);
1537 snd_hda_power_down(apcm
->codec
);
1538 mutex_unlock(&chip
->open_mutex
);
1541 snd_pcm_limit_hw_rates(runtime
);
1543 if (snd_BUG_ON(!runtime
->hw
.channels_min
) ||
1544 snd_BUG_ON(!runtime
->hw
.channels_max
) ||
1545 snd_BUG_ON(!runtime
->hw
.formats
) ||
1546 snd_BUG_ON(!runtime
->hw
.rates
)) {
1547 azx_release_device(azx_dev
);
1548 hinfo
->ops
.close(hinfo
, apcm
->codec
, substream
);
1549 snd_hda_power_down(apcm
->codec
);
1550 mutex_unlock(&chip
->open_mutex
);
1553 spin_lock_irqsave(&chip
->reg_lock
, flags
);
1554 azx_dev
->substream
= substream
;
1555 azx_dev
->running
= 0;
1556 spin_unlock_irqrestore(&chip
->reg_lock
, flags
);
1558 runtime
->private_data
= azx_dev
;
1559 snd_pcm_set_sync(substream
);
1560 mutex_unlock(&chip
->open_mutex
);
1564 static int azx_pcm_close(struct snd_pcm_substream
*substream
)
1566 struct azx_pcm
*apcm
= snd_pcm_substream_chip(substream
);
1567 struct hda_pcm_stream
*hinfo
= apcm
->hinfo
[substream
->stream
];
1568 struct azx
*chip
= apcm
->chip
;
1569 struct azx_dev
*azx_dev
= get_azx_dev(substream
);
1570 unsigned long flags
;
1572 mutex_lock(&chip
->open_mutex
);
1573 spin_lock_irqsave(&chip
->reg_lock
, flags
);
1574 azx_dev
->substream
= NULL
;
1575 azx_dev
->running
= 0;
1576 spin_unlock_irqrestore(&chip
->reg_lock
, flags
);
1577 azx_release_device(azx_dev
);
1578 hinfo
->ops
.close(hinfo
, apcm
->codec
, substream
);
1579 snd_hda_power_down(apcm
->codec
);
1580 mutex_unlock(&chip
->open_mutex
);
1584 static int azx_pcm_hw_params(struct snd_pcm_substream
*substream
,
1585 struct snd_pcm_hw_params
*hw_params
)
1587 struct azx_dev
*azx_dev
= get_azx_dev(substream
);
1589 azx_dev
->bufsize
= 0;
1590 azx_dev
->period_bytes
= 0;
1591 azx_dev
->format_val
= 0;
1592 return snd_pcm_lib_malloc_pages(substream
,
1593 params_buffer_bytes(hw_params
));
1596 static int azx_pcm_hw_free(struct snd_pcm_substream
*substream
)
1598 struct azx_pcm
*apcm
= snd_pcm_substream_chip(substream
);
1599 struct azx_dev
*azx_dev
= get_azx_dev(substream
);
1600 struct hda_pcm_stream
*hinfo
= apcm
->hinfo
[substream
->stream
];
1602 /* reset BDL address */
1603 azx_sd_writel(azx_dev
, SD_BDLPL
, 0);
1604 azx_sd_writel(azx_dev
, SD_BDLPU
, 0);
1605 azx_sd_writel(azx_dev
, SD_CTL
, 0);
1606 azx_dev
->bufsize
= 0;
1607 azx_dev
->period_bytes
= 0;
1608 azx_dev
->format_val
= 0;
1610 hinfo
->ops
.cleanup(hinfo
, apcm
->codec
, substream
);
1612 return snd_pcm_lib_free_pages(substream
);
1615 static int azx_pcm_prepare(struct snd_pcm_substream
*substream
)
1617 struct azx_pcm
*apcm
= snd_pcm_substream_chip(substream
);
1618 struct azx
*chip
= apcm
->chip
;
1619 struct azx_dev
*azx_dev
= get_azx_dev(substream
);
1620 struct hda_pcm_stream
*hinfo
= apcm
->hinfo
[substream
->stream
];
1621 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1622 unsigned int bufsize
, period_bytes
, format_val
;
1625 azx_stream_reset(chip
, azx_dev
);
1626 format_val
= snd_hda_calc_stream_format(runtime
->rate
,
1631 snd_printk(KERN_ERR SFX
1632 "invalid format_val, rate=%d, ch=%d, format=%d\n",
1633 runtime
->rate
, runtime
->channels
, runtime
->format
);
1637 bufsize
= snd_pcm_lib_buffer_bytes(substream
);
1638 period_bytes
= snd_pcm_lib_period_bytes(substream
);
1640 snd_printdd(SFX
"azx_pcm_prepare: bufsize=0x%x, format=0x%x\n",
1641 bufsize
, format_val
);
1643 if (bufsize
!= azx_dev
->bufsize
||
1644 period_bytes
!= azx_dev
->period_bytes
||
1645 format_val
!= azx_dev
->format_val
) {
1646 azx_dev
->bufsize
= bufsize
;
1647 azx_dev
->period_bytes
= period_bytes
;
1648 azx_dev
->format_val
= format_val
;
1649 err
= azx_setup_periods(chip
, substream
, azx_dev
);
1654 azx_dev
->min_jiffies
= (runtime
->period_size
* HZ
) /
1655 (runtime
->rate
* 2);
1656 azx_setup_controller(chip
, azx_dev
);
1657 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
1658 azx_dev
->fifo_size
= azx_sd_readw(azx_dev
, SD_FIFOSIZE
) + 1;
1660 azx_dev
->fifo_size
= 0;
1662 return hinfo
->ops
.prepare(hinfo
, apcm
->codec
, azx_dev
->stream_tag
,
1663 azx_dev
->format_val
, substream
);
1666 static int azx_pcm_trigger(struct snd_pcm_substream
*substream
, int cmd
)
1668 struct azx_pcm
*apcm
= snd_pcm_substream_chip(substream
);
1669 struct azx
*chip
= apcm
->chip
;
1670 struct azx_dev
*azx_dev
;
1671 struct snd_pcm_substream
*s
;
1672 int rstart
= 0, start
, nsync
= 0, sbits
= 0;
1676 case SNDRV_PCM_TRIGGER_START
:
1678 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
1679 case SNDRV_PCM_TRIGGER_RESUME
:
1682 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
1683 case SNDRV_PCM_TRIGGER_SUSPEND
:
1684 case SNDRV_PCM_TRIGGER_STOP
:
1691 snd_pcm_group_for_each_entry(s
, substream
) {
1692 if (s
->pcm
->card
!= substream
->pcm
->card
)
1694 azx_dev
= get_azx_dev(s
);
1695 sbits
|= 1 << azx_dev
->index
;
1697 snd_pcm_trigger_done(s
, substream
);
1700 spin_lock(&chip
->reg_lock
);
1702 /* first, set SYNC bits of corresponding streams */
1703 azx_writel(chip
, SYNC
, azx_readl(chip
, SYNC
) | sbits
);
1705 snd_pcm_group_for_each_entry(s
, substream
) {
1706 if (s
->pcm
->card
!= substream
->pcm
->card
)
1708 azx_dev
= get_azx_dev(s
);
1710 azx_dev
->start_flag
= 1;
1711 azx_dev
->start_jiffies
= jiffies
+ azx_dev
->min_jiffies
;
1714 azx_stream_start(chip
, azx_dev
);
1716 azx_stream_stop(chip
, azx_dev
);
1717 azx_dev
->running
= start
;
1719 spin_unlock(&chip
->reg_lock
);
1723 /* wait until all FIFOs get ready */
1724 for (timeout
= 5000; timeout
; timeout
--) {
1726 snd_pcm_group_for_each_entry(s
, substream
) {
1727 if (s
->pcm
->card
!= substream
->pcm
->card
)
1729 azx_dev
= get_azx_dev(s
);
1730 if (!(azx_sd_readb(azx_dev
, SD_STS
) &
1739 /* wait until all RUN bits are cleared */
1740 for (timeout
= 5000; timeout
; timeout
--) {
1742 snd_pcm_group_for_each_entry(s
, substream
) {
1743 if (s
->pcm
->card
!= substream
->pcm
->card
)
1745 azx_dev
= get_azx_dev(s
);
1746 if (azx_sd_readb(azx_dev
, SD_CTL
) &
1756 spin_lock(&chip
->reg_lock
);
1757 /* reset SYNC bits */
1758 azx_writel(chip
, SYNC
, azx_readl(chip
, SYNC
) & ~sbits
);
1759 spin_unlock(&chip
->reg_lock
);
1764 /* get the current DMA position with correction on VIA chips */
1765 static unsigned int azx_via_get_position(struct azx
*chip
,
1766 struct azx_dev
*azx_dev
)
1768 unsigned int link_pos
, mini_pos
, bound_pos
;
1769 unsigned int mod_link_pos
, mod_dma_pos
, mod_mini_pos
;
1770 unsigned int fifo_size
;
1772 link_pos
= azx_sd_readl(azx_dev
, SD_LPIB
);
1773 if (azx_dev
->index
>= 4) {
1774 /* Playback, no problem using link position */
1780 * use mod to get the DMA position just like old chipset
1782 mod_dma_pos
= le32_to_cpu(*azx_dev
->posbuf
);
1783 mod_dma_pos
%= azx_dev
->period_bytes
;
1785 /* azx_dev->fifo_size can't get FIFO size of in stream.
1786 * Get from base address + offset.
1788 fifo_size
= readw(chip
->remap_addr
+ VIA_IN_STREAM0_FIFO_SIZE_OFFSET
);
1790 if (azx_dev
->insufficient
) {
1791 /* Link position never gather than FIFO size */
1792 if (link_pos
<= fifo_size
)
1795 azx_dev
->insufficient
= 0;
1798 if (link_pos
<= fifo_size
)
1799 mini_pos
= azx_dev
->bufsize
+ link_pos
- fifo_size
;
1801 mini_pos
= link_pos
- fifo_size
;
1803 /* Find nearest previous boudary */
1804 mod_mini_pos
= mini_pos
% azx_dev
->period_bytes
;
1805 mod_link_pos
= link_pos
% azx_dev
->period_bytes
;
1806 if (mod_link_pos
>= fifo_size
)
1807 bound_pos
= link_pos
- mod_link_pos
;
1808 else if (mod_dma_pos
>= mod_mini_pos
)
1809 bound_pos
= mini_pos
- mod_mini_pos
;
1811 bound_pos
= mini_pos
- mod_mini_pos
+ azx_dev
->period_bytes
;
1812 if (bound_pos
>= azx_dev
->bufsize
)
1816 /* Calculate real DMA position we want */
1817 return bound_pos
+ mod_dma_pos
;
1820 static unsigned int azx_get_position(struct azx
*chip
,
1821 struct azx_dev
*azx_dev
)
1825 if (chip
->via_dmapos_patch
)
1826 pos
= azx_via_get_position(chip
, azx_dev
);
1827 else if (chip
->position_fix
== POS_FIX_POSBUF
||
1828 chip
->position_fix
== POS_FIX_AUTO
) {
1829 /* use the position buffer */
1830 pos
= le32_to_cpu(*azx_dev
->posbuf
);
1833 pos
= azx_sd_readl(azx_dev
, SD_LPIB
);
1835 if (pos
>= azx_dev
->bufsize
)
1840 static snd_pcm_uframes_t
azx_pcm_pointer(struct snd_pcm_substream
*substream
)
1842 struct azx_pcm
*apcm
= snd_pcm_substream_chip(substream
);
1843 struct azx
*chip
= apcm
->chip
;
1844 struct azx_dev
*azx_dev
= get_azx_dev(substream
);
1845 return bytes_to_frames(substream
->runtime
,
1846 azx_get_position(chip
, azx_dev
));
1850 * Check whether the current DMA position is acceptable for updating
1851 * periods. Returns non-zero if it's OK.
1853 * Many HD-audio controllers appear pretty inaccurate about
1854 * the update-IRQ timing. The IRQ is issued before actually the
1855 * data is processed. So, we need to process it afterwords in a
1858 static int azx_position_ok(struct azx
*chip
, struct azx_dev
*azx_dev
)
1862 if (azx_dev
->start_flag
&&
1863 time_before_eq(jiffies
, azx_dev
->start_jiffies
))
1864 return -1; /* bogus (too early) interrupt */
1865 azx_dev
->start_flag
= 0;
1867 pos
= azx_get_position(chip
, azx_dev
);
1868 if (chip
->position_fix
== POS_FIX_AUTO
) {
1871 "hda-intel: Invalid position buffer, "
1872 "using LPIB read method instead.\n");
1873 chip
->position_fix
= POS_FIX_LPIB
;
1874 pos
= azx_get_position(chip
, azx_dev
);
1876 chip
->position_fix
= POS_FIX_POSBUF
;
1879 if (!bdl_pos_adj
[chip
->dev_index
])
1880 return 1; /* no delayed ack */
1881 if (pos
% azx_dev
->period_bytes
> azx_dev
->period_bytes
/ 2)
1882 return 0; /* NG - it's below the period boundary */
1883 return 1; /* OK, it's fine */
1887 * The work for pending PCM period updates.
1889 static void azx_irq_pending_work(struct work_struct
*work
)
1891 struct azx
*chip
= container_of(work
, struct azx
, irq_pending_work
);
1894 if (!chip
->irq_pending_warned
) {
1896 "hda-intel: IRQ timing workaround is activated "
1897 "for card #%d. Suggest a bigger bdl_pos_adj.\n",
1898 chip
->card
->number
);
1899 chip
->irq_pending_warned
= 1;
1904 spin_lock_irq(&chip
->reg_lock
);
1905 for (i
= 0; i
< chip
->num_streams
; i
++) {
1906 struct azx_dev
*azx_dev
= &chip
->azx_dev
[i
];
1907 if (!azx_dev
->irq_pending
||
1908 !azx_dev
->substream
||
1911 if (azx_position_ok(chip
, azx_dev
)) {
1912 azx_dev
->irq_pending
= 0;
1913 spin_unlock(&chip
->reg_lock
);
1914 snd_pcm_period_elapsed(azx_dev
->substream
);
1915 spin_lock(&chip
->reg_lock
);
1919 spin_unlock_irq(&chip
->reg_lock
);
1926 /* clear irq_pending flags and assure no on-going workq */
1927 static void azx_clear_irq_pending(struct azx
*chip
)
1931 spin_lock_irq(&chip
->reg_lock
);
1932 for (i
= 0; i
< chip
->num_streams
; i
++)
1933 chip
->azx_dev
[i
].irq_pending
= 0;
1934 spin_unlock_irq(&chip
->reg_lock
);
1937 static struct snd_pcm_ops azx_pcm_ops
= {
1938 .open
= azx_pcm_open
,
1939 .close
= azx_pcm_close
,
1940 .ioctl
= snd_pcm_lib_ioctl
,
1941 .hw_params
= azx_pcm_hw_params
,
1942 .hw_free
= azx_pcm_hw_free
,
1943 .prepare
= azx_pcm_prepare
,
1944 .trigger
= azx_pcm_trigger
,
1945 .pointer
= azx_pcm_pointer
,
1946 .page
= snd_pcm_sgbuf_ops_page
,
1949 static void azx_pcm_free(struct snd_pcm
*pcm
)
1951 struct azx_pcm
*apcm
= pcm
->private_data
;
1953 apcm
->chip
->pcm
[pcm
->device
] = NULL
;
1959 azx_attach_pcm_stream(struct hda_bus
*bus
, struct hda_codec
*codec
,
1960 struct hda_pcm
*cpcm
)
1962 struct azx
*chip
= bus
->private_data
;
1963 struct snd_pcm
*pcm
;
1964 struct azx_pcm
*apcm
;
1965 int pcm_dev
= cpcm
->device
;
1968 if (pcm_dev
>= AZX_MAX_PCMS
) {
1969 snd_printk(KERN_ERR SFX
"Invalid PCM device number %d\n",
1973 if (chip
->pcm
[pcm_dev
]) {
1974 snd_printk(KERN_ERR SFX
"PCM %d already exists\n", pcm_dev
);
1977 err
= snd_pcm_new(chip
->card
, cpcm
->name
, pcm_dev
,
1978 cpcm
->stream
[SNDRV_PCM_STREAM_PLAYBACK
].substreams
,
1979 cpcm
->stream
[SNDRV_PCM_STREAM_CAPTURE
].substreams
,
1983 strlcpy(pcm
->name
, cpcm
->name
, sizeof(pcm
->name
));
1984 apcm
= kzalloc(sizeof(*apcm
), GFP_KERNEL
);
1988 apcm
->codec
= codec
;
1989 pcm
->private_data
= apcm
;
1990 pcm
->private_free
= azx_pcm_free
;
1991 if (cpcm
->pcm_type
== HDA_PCM_TYPE_MODEM
)
1992 pcm
->dev_class
= SNDRV_PCM_CLASS_MODEM
;
1993 chip
->pcm
[pcm_dev
] = pcm
;
1995 for (s
= 0; s
< 2; s
++) {
1996 apcm
->hinfo
[s
] = &cpcm
->stream
[s
];
1997 if (cpcm
->stream
[s
].substreams
)
1998 snd_pcm_set_ops(pcm
, s
, &azx_pcm_ops
);
2000 /* buffer pre-allocation */
2001 snd_pcm_lib_preallocate_pages_for_all(pcm
, SNDRV_DMA_TYPE_DEV_SG
,
2002 snd_dma_pci_data(chip
->pci
),
2003 1024 * 64, 32 * 1024 * 1024);
2008 * mixer creation - all stuff is implemented in hda module
2010 static int __devinit
azx_mixer_create(struct azx
*chip
)
2012 return snd_hda_build_controls(chip
->bus
);
2017 * initialize SD streams
2019 static int __devinit
azx_init_stream(struct azx
*chip
)
2023 /* initialize each stream (aka device)
2024 * assign the starting bdl address to each stream (device)
2027 for (i
= 0; i
< chip
->num_streams
; i
++) {
2028 struct azx_dev
*azx_dev
= &chip
->azx_dev
[i
];
2029 azx_dev
->posbuf
= (u32 __iomem
*)(chip
->posbuf
.area
+ i
* 8);
2030 /* offset: SDI0=0x80, SDI1=0xa0, ... SDO3=0x160 */
2031 azx_dev
->sd_addr
= chip
->remap_addr
+ (0x20 * i
+ 0x80);
2032 /* int mask: SDI0=0x01, SDI1=0x02, ... SDO3=0x80 */
2033 azx_dev
->sd_int_sta_mask
= 1 << i
;
2034 /* stream tag: must be non-zero and unique */
2036 azx_dev
->stream_tag
= i
+ 1;
2042 static int azx_acquire_irq(struct azx
*chip
, int do_disconnect
)
2044 if (request_irq(chip
->pci
->irq
, azx_interrupt
,
2045 chip
->msi
? 0 : IRQF_SHARED
,
2046 "HDA Intel", chip
)) {
2047 printk(KERN_ERR
"hda-intel: unable to grab IRQ %d, "
2048 "disabling device\n", chip
->pci
->irq
);
2050 snd_card_disconnect(chip
->card
);
2053 chip
->irq
= chip
->pci
->irq
;
2054 pci_intx(chip
->pci
, !chip
->msi
);
2059 static void azx_stop_chip(struct azx
*chip
)
2061 if (!chip
->initialized
)
2064 /* disable interrupts */
2065 azx_int_disable(chip
);
2066 azx_int_clear(chip
);
2068 /* disable CORB/RIRB */
2069 azx_free_cmd_io(chip
);
2071 /* disable position buffer */
2072 azx_writel(chip
, DPLBASE
, 0);
2073 azx_writel(chip
, DPUBASE
, 0);
2075 chip
->initialized
= 0;
2078 #ifdef CONFIG_SND_HDA_POWER_SAVE
2079 /* power-up/down the controller */
2080 static void azx_power_notify(struct hda_bus
*bus
)
2082 struct azx
*chip
= bus
->private_data
;
2083 struct hda_codec
*c
;
2086 list_for_each_entry(c
, &bus
->codec_list
, list
) {
2093 azx_init_chip(chip
);
2094 else if (chip
->running
&& power_save_controller
&&
2095 !bus
->power_keep_link_on
)
2096 azx_stop_chip(chip
);
2098 #endif /* CONFIG_SND_HDA_POWER_SAVE */
2105 static int snd_hda_codecs_inuse(struct hda_bus
*bus
)
2107 struct hda_codec
*codec
;
2109 list_for_each_entry(codec
, &bus
->codec_list
, list
) {
2110 if (snd_hda_codec_needs_resume(codec
))
2116 static int azx_suspend(struct pci_dev
*pci
, pm_message_t state
)
2118 struct snd_card
*card
= pci_get_drvdata(pci
);
2119 struct azx
*chip
= card
->private_data
;
2122 snd_power_change_state(card
, SNDRV_CTL_POWER_D3hot
);
2123 azx_clear_irq_pending(chip
);
2124 for (i
= 0; i
< AZX_MAX_PCMS
; i
++)
2125 snd_pcm_suspend_all(chip
->pcm
[i
]);
2126 if (chip
->initialized
)
2127 snd_hda_suspend(chip
->bus
);
2128 azx_stop_chip(chip
);
2129 if (chip
->irq
>= 0) {
2130 free_irq(chip
->irq
, chip
);
2134 pci_disable_msi(chip
->pci
);
2135 pci_disable_device(pci
);
2136 pci_save_state(pci
);
2137 pci_set_power_state(pci
, pci_choose_state(pci
, state
));
2141 static int azx_resume(struct pci_dev
*pci
)
2143 struct snd_card
*card
= pci_get_drvdata(pci
);
2144 struct azx
*chip
= card
->private_data
;
2146 pci_set_power_state(pci
, PCI_D0
);
2147 pci_restore_state(pci
);
2148 if (pci_enable_device(pci
) < 0) {
2149 printk(KERN_ERR
"hda-intel: pci_enable_device failed, "
2150 "disabling device\n");
2151 snd_card_disconnect(card
);
2154 pci_set_master(pci
);
2156 if (pci_enable_msi(pci
) < 0)
2158 if (azx_acquire_irq(chip
, 1) < 0)
2162 if (snd_hda_codecs_inuse(chip
->bus
))
2163 azx_init_chip(chip
);
2165 snd_hda_resume(chip
->bus
);
2166 snd_power_change_state(card
, SNDRV_CTL_POWER_D0
);
2169 #endif /* CONFIG_PM */
2173 * reboot notifier for hang-up problem at power-down
2175 static int azx_halt(struct notifier_block
*nb
, unsigned long event
, void *buf
)
2177 struct azx
*chip
= container_of(nb
, struct azx
, reboot_notifier
);
2178 snd_hda_bus_reboot_notify(chip
->bus
);
2179 azx_stop_chip(chip
);
2183 static void azx_notifier_register(struct azx
*chip
)
2185 chip
->reboot_notifier
.notifier_call
= azx_halt
;
2186 register_reboot_notifier(&chip
->reboot_notifier
);
2189 static void azx_notifier_unregister(struct azx
*chip
)
2191 if (chip
->reboot_notifier
.notifier_call
)
2192 unregister_reboot_notifier(&chip
->reboot_notifier
);
2198 static int azx_free(struct azx
*chip
)
2202 azx_notifier_unregister(chip
);
2204 if (chip
->initialized
) {
2205 azx_clear_irq_pending(chip
);
2206 for (i
= 0; i
< chip
->num_streams
; i
++)
2207 azx_stream_stop(chip
, &chip
->azx_dev
[i
]);
2208 azx_stop_chip(chip
);
2212 free_irq(chip
->irq
, (void*)chip
);
2214 pci_disable_msi(chip
->pci
);
2215 if (chip
->remap_addr
)
2216 iounmap(chip
->remap_addr
);
2218 if (chip
->azx_dev
) {
2219 for (i
= 0; i
< chip
->num_streams
; i
++)
2220 if (chip
->azx_dev
[i
].bdl
.area
)
2221 snd_dma_free_pages(&chip
->azx_dev
[i
].bdl
);
2224 snd_dma_free_pages(&chip
->rb
);
2225 if (chip
->posbuf
.area
)
2226 snd_dma_free_pages(&chip
->posbuf
);
2227 pci_release_regions(chip
->pci
);
2228 pci_disable_device(chip
->pci
);
2229 kfree(chip
->azx_dev
);
2235 static int azx_dev_free(struct snd_device
*device
)
2237 return azx_free(device
->device_data
);
2241 * white/black-listing for position_fix
2243 static struct snd_pci_quirk position_fix_list
[] __devinitdata
= {
2244 SND_PCI_QUIRK(0x1028, 0x01cc, "Dell D820", POS_FIX_LPIB
),
2245 SND_PCI_QUIRK(0x1028, 0x01de, "Dell Precision 390", POS_FIX_LPIB
),
2246 SND_PCI_QUIRK(0x103c, 0x306d, "HP dv3", POS_FIX_LPIB
),
2247 SND_PCI_QUIRK(0x1043, 0x813d, "ASUS P5AD2", POS_FIX_LPIB
),
2248 SND_PCI_QUIRK(0x1462, 0x1002, "MSI Wind U115", POS_FIX_LPIB
),
2252 static int __devinit
check_position_fix(struct azx
*chip
, int fix
)
2254 const struct snd_pci_quirk
*q
;
2258 case POS_FIX_POSBUF
:
2262 /* Check VIA/ATI HD Audio Controller exist */
2263 switch (chip
->driver_type
) {
2264 case AZX_DRIVER_VIA
:
2265 case AZX_DRIVER_ATI
:
2266 chip
->via_dmapos_patch
= 1;
2267 /* Use link position directly, avoid any transfer problem. */
2268 return POS_FIX_LPIB
;
2270 chip
->via_dmapos_patch
= 0;
2272 q
= snd_pci_quirk_lookup(chip
->pci
, position_fix_list
);
2275 "hda_intel: position_fix set to %d "
2276 "for device %04x:%04x\n",
2277 q
->value
, q
->subvendor
, q
->subdevice
);
2280 return POS_FIX_AUTO
;
2284 * black-lists for probe_mask
2286 static struct snd_pci_quirk probe_mask_list
[] __devinitdata
= {
2287 /* Thinkpad often breaks the controller communication when accessing
2288 * to the non-working (or non-existing) modem codec slot.
2290 SND_PCI_QUIRK(0x1014, 0x05b7, "Thinkpad Z60", 0x01),
2291 SND_PCI_QUIRK(0x17aa, 0x2010, "Thinkpad X/T/R60", 0x01),
2292 SND_PCI_QUIRK(0x17aa, 0x20ac, "Thinkpad X/T/R61", 0x01),
2294 SND_PCI_QUIRK(0x1028, 0x20ac, "Dell Studio Desktop", 0x01),
2295 /* including bogus ALC268 in slot#2 that conflicts with ALC888 */
2296 SND_PCI_QUIRK(0x17c0, 0x4085, "Medion MD96630", 0x01),
2297 /* forced codec slots */
2298 SND_PCI_QUIRK(0x1043, 0x1262, "ASUS W5Fm", 0x103),
2299 SND_PCI_QUIRK(0x1046, 0x1262, "ASUS W5F", 0x103),
2303 #define AZX_FORCE_CODEC_MASK 0x100
2305 static void __devinit
check_probe_mask(struct azx
*chip
, int dev
)
2307 const struct snd_pci_quirk
*q
;
2309 chip
->codec_probe_mask
= probe_mask
[dev
];
2310 if (chip
->codec_probe_mask
== -1) {
2311 q
= snd_pci_quirk_lookup(chip
->pci
, probe_mask_list
);
2314 "hda_intel: probe_mask set to 0x%x "
2315 "for device %04x:%04x\n",
2316 q
->value
, q
->subvendor
, q
->subdevice
);
2317 chip
->codec_probe_mask
= q
->value
;
2321 /* check forced option */
2322 if (chip
->codec_probe_mask
!= -1 &&
2323 (chip
->codec_probe_mask
& AZX_FORCE_CODEC_MASK
)) {
2324 chip
->codec_mask
= chip
->codec_probe_mask
& 0xff;
2325 printk(KERN_INFO
"hda_intel: codec_mask forced to 0x%x\n",
2331 * white/black-list for enable_msi
2333 static struct snd_pci_quirk msi_black_list
[] __devinitdata
= {
2334 SND_PCI_QUIRK(0x1043, 0x81f2, "ASUS", 0), /* Athlon64 X2 + nvidia */
2338 static void __devinit
check_msi(struct azx
*chip
)
2340 const struct snd_pci_quirk
*q
;
2342 if (enable_msi
>= 0) {
2343 chip
->msi
= !!enable_msi
;
2346 chip
->msi
= 1; /* enable MSI as default */
2347 q
= snd_pci_quirk_lookup(chip
->pci
, msi_black_list
);
2350 "hda_intel: msi for device %04x:%04x set to %d\n",
2351 q
->subvendor
, q
->subdevice
, q
->value
);
2352 chip
->msi
= q
->value
;
2360 static int __devinit
azx_create(struct snd_card
*card
, struct pci_dev
*pci
,
2361 int dev
, int driver_type
,
2366 unsigned short gcap
;
2367 static struct snd_device_ops ops
= {
2368 .dev_free
= azx_dev_free
,
2373 err
= pci_enable_device(pci
);
2377 chip
= kzalloc(sizeof(*chip
), GFP_KERNEL
);
2379 snd_printk(KERN_ERR SFX
"cannot allocate chip\n");
2380 pci_disable_device(pci
);
2384 spin_lock_init(&chip
->reg_lock
);
2385 mutex_init(&chip
->open_mutex
);
2389 chip
->driver_type
= driver_type
;
2391 chip
->dev_index
= dev
;
2392 INIT_WORK(&chip
->irq_pending_work
, azx_irq_pending_work
);
2394 chip
->position_fix
= check_position_fix(chip
, position_fix
[dev
]);
2395 check_probe_mask(chip
, dev
);
2397 chip
->single_cmd
= single_cmd
;
2399 if (bdl_pos_adj
[dev
] < 0) {
2400 switch (chip
->driver_type
) {
2401 case AZX_DRIVER_ICH
:
2402 bdl_pos_adj
[dev
] = 1;
2405 bdl_pos_adj
[dev
] = 32;
2410 #if BITS_PER_LONG != 64
2411 /* Fix up base address on ULI M5461 */
2412 if (chip
->driver_type
== AZX_DRIVER_ULI
) {
2414 pci_read_config_word(pci
, 0x40, &tmp3
);
2415 pci_write_config_word(pci
, 0x40, tmp3
| 0x10);
2416 pci_write_config_dword(pci
, PCI_BASE_ADDRESS_1
, 0);
2420 err
= pci_request_regions(pci
, "ICH HD audio");
2423 pci_disable_device(pci
);
2427 chip
->addr
= pci_resource_start(pci
, 0);
2428 chip
->remap_addr
= pci_ioremap_bar(pci
, 0);
2429 if (chip
->remap_addr
== NULL
) {
2430 snd_printk(KERN_ERR SFX
"ioremap error\n");
2436 if (pci_enable_msi(pci
) < 0)
2439 if (azx_acquire_irq(chip
, 0) < 0) {
2444 pci_set_master(pci
);
2445 synchronize_irq(chip
->irq
);
2447 gcap
= azx_readw(chip
, GCAP
);
2448 snd_printdd(SFX
"chipset global capabilities = 0x%x\n", gcap
);
2450 /* disable SB600 64bit support for safety */
2451 if ((chip
->driver_type
== AZX_DRIVER_ATI
) ||
2452 (chip
->driver_type
== AZX_DRIVER_ATIHDMI
)) {
2453 struct pci_dev
*p_smbus
;
2454 p_smbus
= pci_get_device(PCI_VENDOR_ID_ATI
,
2455 PCI_DEVICE_ID_ATI_SBX00_SMBUS
,
2458 if (p_smbus
->revision
< 0x30)
2459 gcap
&= ~ICH6_GCAP_64OK
;
2460 pci_dev_put(p_smbus
);
2464 /* disable 64bit DMA address for Teradici */
2465 /* it does not work with device 6549:1200 subsys e4a2:040b */
2466 if (chip
->driver_type
== AZX_DRIVER_TERA
)
2467 gcap
&= ~ICH6_GCAP_64OK
;
2469 /* allow 64bit DMA address if supported by H/W */
2470 if ((gcap
& ICH6_GCAP_64OK
) && !pci_set_dma_mask(pci
, DMA_BIT_MASK(64)))
2471 pci_set_consistent_dma_mask(pci
, DMA_BIT_MASK(64));
2473 pci_set_dma_mask(pci
, DMA_BIT_MASK(32));
2474 pci_set_consistent_dma_mask(pci
, DMA_BIT_MASK(32));
2477 /* read number of streams from GCAP register instead of using
2480 chip
->capture_streams
= (gcap
>> 8) & 0x0f;
2481 chip
->playback_streams
= (gcap
>> 12) & 0x0f;
2482 if (!chip
->playback_streams
&& !chip
->capture_streams
) {
2483 /* gcap didn't give any info, switching to old method */
2485 switch (chip
->driver_type
) {
2486 case AZX_DRIVER_ULI
:
2487 chip
->playback_streams
= ULI_NUM_PLAYBACK
;
2488 chip
->capture_streams
= ULI_NUM_CAPTURE
;
2490 case AZX_DRIVER_ATIHDMI
:
2491 chip
->playback_streams
= ATIHDMI_NUM_PLAYBACK
;
2492 chip
->capture_streams
= ATIHDMI_NUM_CAPTURE
;
2494 case AZX_DRIVER_GENERIC
:
2496 chip
->playback_streams
= ICH6_NUM_PLAYBACK
;
2497 chip
->capture_streams
= ICH6_NUM_CAPTURE
;
2501 chip
->capture_index_offset
= 0;
2502 chip
->playback_index_offset
= chip
->capture_streams
;
2503 chip
->num_streams
= chip
->playback_streams
+ chip
->capture_streams
;
2504 chip
->azx_dev
= kcalloc(chip
->num_streams
, sizeof(*chip
->azx_dev
),
2506 if (!chip
->azx_dev
) {
2507 snd_printk(KERN_ERR SFX
"cannot malloc azx_dev\n");
2511 for (i
= 0; i
< chip
->num_streams
; i
++) {
2512 /* allocate memory for the BDL for each stream */
2513 err
= snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV
,
2514 snd_dma_pci_data(chip
->pci
),
2515 BDL_SIZE
, &chip
->azx_dev
[i
].bdl
);
2517 snd_printk(KERN_ERR SFX
"cannot allocate BDL\n");
2521 /* allocate memory for the position buffer */
2522 err
= snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV
,
2523 snd_dma_pci_data(chip
->pci
),
2524 chip
->num_streams
* 8, &chip
->posbuf
);
2526 snd_printk(KERN_ERR SFX
"cannot allocate posbuf\n");
2529 /* allocate CORB/RIRB */
2530 err
= azx_alloc_cmd_io(chip
);
2534 /* initialize streams */
2535 azx_init_stream(chip
);
2537 /* initialize chip */
2539 azx_init_chip(chip
);
2541 /* codec detection */
2542 if (!chip
->codec_mask
) {
2543 snd_printk(KERN_ERR SFX
"no codecs found!\n");
2548 err
= snd_device_new(card
, SNDRV_DEV_LOWLEVEL
, chip
, &ops
);
2550 snd_printk(KERN_ERR SFX
"Error creating device [card]!\n");
2554 strcpy(card
->driver
, "HDA-Intel");
2555 strlcpy(card
->shortname
, driver_short_names
[chip
->driver_type
],
2556 sizeof(card
->shortname
));
2557 snprintf(card
->longname
, sizeof(card
->longname
),
2558 "%s at 0x%lx irq %i",
2559 card
->shortname
, chip
->addr
, chip
->irq
);
2569 static void power_down_all_codecs(struct azx
*chip
)
2571 #ifdef CONFIG_SND_HDA_POWER_SAVE
2572 /* The codecs were powered up in snd_hda_codec_new().
2573 * Now all initialization done, so turn them down if possible
2575 struct hda_codec
*codec
;
2576 list_for_each_entry(codec
, &chip
->bus
->codec_list
, list
) {
2577 snd_hda_power_down(codec
);
2582 static int __devinit
azx_probe(struct pci_dev
*pci
,
2583 const struct pci_device_id
*pci_id
)
2586 struct snd_card
*card
;
2590 if (dev
>= SNDRV_CARDS
)
2597 err
= snd_card_create(index
[dev
], id
[dev
], THIS_MODULE
, 0, &card
);
2599 snd_printk(KERN_ERR SFX
"Error creating card!\n");
2603 /* set this here since it's referred in snd_hda_load_patch() */
2604 snd_card_set_dev(card
, &pci
->dev
);
2606 err
= azx_create(card
, pci
, dev
, pci_id
->driver_data
, &chip
);
2609 card
->private_data
= chip
;
2611 #ifdef CONFIG_SND_HDA_INPUT_BEEP
2612 chip
->beep_mode
= beep_mode
[dev
];
2615 /* create codec instances */
2616 err
= azx_codec_create(chip
, model
[dev
]);
2619 #ifdef CONFIG_SND_HDA_PATCH_LOADER
2621 snd_printk(KERN_ERR SFX
"Applying patch firmware '%s'\n",
2623 err
= snd_hda_load_patch(chip
->bus
, patch
[dev
]);
2628 if (!probe_only
[dev
]) {
2629 err
= azx_codec_configure(chip
);
2634 /* create PCM streams */
2635 err
= snd_hda_build_pcms(chip
->bus
);
2639 /* create mixer controls */
2640 err
= azx_mixer_create(chip
);
2644 err
= snd_card_register(card
);
2648 pci_set_drvdata(pci
, card
);
2650 power_down_all_codecs(chip
);
2651 azx_notifier_register(chip
);
2656 snd_card_free(card
);
2660 static void __devexit
azx_remove(struct pci_dev
*pci
)
2662 snd_card_free(pci_get_drvdata(pci
));
2663 pci_set_drvdata(pci
, NULL
);
2667 static DEFINE_PCI_DEVICE_TABLE(azx_ids
) = {
2669 { PCI_DEVICE(0x8086, 0x2668), .driver_data
= AZX_DRIVER_ICH
},
2670 { PCI_DEVICE(0x8086, 0x27d8), .driver_data
= AZX_DRIVER_ICH
},
2671 { PCI_DEVICE(0x8086, 0x269a), .driver_data
= AZX_DRIVER_ICH
},
2672 { PCI_DEVICE(0x8086, 0x284b), .driver_data
= AZX_DRIVER_ICH
},
2673 { PCI_DEVICE(0x8086, 0x2911), .driver_data
= AZX_DRIVER_ICH
},
2674 { PCI_DEVICE(0x8086, 0x293e), .driver_data
= AZX_DRIVER_ICH
},
2675 { PCI_DEVICE(0x8086, 0x293f), .driver_data
= AZX_DRIVER_ICH
},
2676 { PCI_DEVICE(0x8086, 0x3a3e), .driver_data
= AZX_DRIVER_ICH
},
2677 { PCI_DEVICE(0x8086, 0x3a6e), .driver_data
= AZX_DRIVER_ICH
},
2679 { PCI_DEVICE(0x8086, 0x3b56), .driver_data
= AZX_DRIVER_ICH
},
2681 { PCI_DEVICE(0x8086, 0x811b), .driver_data
= AZX_DRIVER_SCH
},
2682 /* ATI SB 450/600 */
2683 { PCI_DEVICE(0x1002, 0x437b), .driver_data
= AZX_DRIVER_ATI
},
2684 { PCI_DEVICE(0x1002, 0x4383), .driver_data
= AZX_DRIVER_ATI
},
2686 { PCI_DEVICE(0x1002, 0x793b), .driver_data
= AZX_DRIVER_ATIHDMI
},
2687 { PCI_DEVICE(0x1002, 0x7919), .driver_data
= AZX_DRIVER_ATIHDMI
},
2688 { PCI_DEVICE(0x1002, 0x960f), .driver_data
= AZX_DRIVER_ATIHDMI
},
2689 { PCI_DEVICE(0x1002, 0x970f), .driver_data
= AZX_DRIVER_ATIHDMI
},
2690 { PCI_DEVICE(0x1002, 0xaa00), .driver_data
= AZX_DRIVER_ATIHDMI
},
2691 { PCI_DEVICE(0x1002, 0xaa08), .driver_data
= AZX_DRIVER_ATIHDMI
},
2692 { PCI_DEVICE(0x1002, 0xaa10), .driver_data
= AZX_DRIVER_ATIHDMI
},
2693 { PCI_DEVICE(0x1002, 0xaa18), .driver_data
= AZX_DRIVER_ATIHDMI
},
2694 { PCI_DEVICE(0x1002, 0xaa20), .driver_data
= AZX_DRIVER_ATIHDMI
},
2695 { PCI_DEVICE(0x1002, 0xaa28), .driver_data
= AZX_DRIVER_ATIHDMI
},
2696 { PCI_DEVICE(0x1002, 0xaa30), .driver_data
= AZX_DRIVER_ATIHDMI
},
2697 { PCI_DEVICE(0x1002, 0xaa38), .driver_data
= AZX_DRIVER_ATIHDMI
},
2698 { PCI_DEVICE(0x1002, 0xaa40), .driver_data
= AZX_DRIVER_ATIHDMI
},
2699 { PCI_DEVICE(0x1002, 0xaa48), .driver_data
= AZX_DRIVER_ATIHDMI
},
2700 /* VIA VT8251/VT8237A */
2701 { PCI_DEVICE(0x1106, 0x3288), .driver_data
= AZX_DRIVER_VIA
},
2703 { PCI_DEVICE(0x1039, 0x7502), .driver_data
= AZX_DRIVER_SIS
},
2705 { PCI_DEVICE(0x10b9, 0x5461), .driver_data
= AZX_DRIVER_ULI
},
2707 { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA
, PCI_ANY_ID
),
2708 .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO
<< 8,
2709 .class_mask
= 0xffffff,
2710 .driver_data
= AZX_DRIVER_NVIDIA
},
2712 { PCI_DEVICE(0x6549, 0x1200), .driver_data
= AZX_DRIVER_TERA
},
2713 /* Creative X-Fi (CA0110-IBG) */
2714 #if !defined(CONFIG_SND_CTXFI) && !defined(CONFIG_SND_CTXFI_MODULE)
2715 /* the following entry conflicts with snd-ctxfi driver,
2716 * as ctxfi driver mutates from HD-audio to native mode with
2717 * a special command sequence.
2719 { PCI_DEVICE(PCI_VENDOR_ID_CREATIVE
, PCI_ANY_ID
),
2720 .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO
<< 8,
2721 .class_mask
= 0xffffff,
2722 .driver_data
= AZX_DRIVER_GENERIC
},
2724 /* this entry seems still valid -- i.e. without emu20kx chip */
2725 { PCI_DEVICE(0x1102, 0x0009), .driver_data
= AZX_DRIVER_GENERIC
},
2727 /* AMD/ATI Generic, PCI class code and Vendor ID for HD Audio */
2728 { PCI_DEVICE(PCI_VENDOR_ID_ATI
, PCI_ANY_ID
),
2729 .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO
<< 8,
2730 .class_mask
= 0xffffff,
2731 .driver_data
= AZX_DRIVER_GENERIC
},
2732 { PCI_DEVICE(PCI_VENDOR_ID_AMD
, PCI_ANY_ID
),
2733 .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO
<< 8,
2734 .class_mask
= 0xffffff,
2735 .driver_data
= AZX_DRIVER_GENERIC
},
2738 MODULE_DEVICE_TABLE(pci
, azx_ids
);
2740 /* pci_driver definition */
2741 static struct pci_driver driver
= {
2742 .name
= "HDA Intel",
2743 .id_table
= azx_ids
,
2745 .remove
= __devexit_p(azx_remove
),
2747 .suspend
= azx_suspend
,
2748 .resume
= azx_resume
,
2752 static int __init
alsa_card_azx_init(void)
2754 return pci_register_driver(&driver
);
2757 static void __exit
alsa_card_azx_exit(void)
2759 pci_unregister_driver(&driver
);
2762 module_init(alsa_card_azx_init
)
2763 module_exit(alsa_card_azx_exit
)