xref: /openbmc/linux/sound/pci/intel8x0.c (revision adb57164)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *   ALSA driver for Intel ICH (i8x0) chipsets
4  *
5  *	Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
6  *
7  *   This code also contains alpha support for SiS 735 chipsets provided
8  *   by Mike Pieper <mptei@users.sourceforge.net>. We have no datasheet
9  *   for SiS735, so the code is not fully functional.
10  *
11 
12  */
13 
14 #include <linux/io.h>
15 #include <linux/delay.h>
16 #include <linux/interrupt.h>
17 #include <linux/init.h>
18 #include <linux/pci.h>
19 #include <linux/slab.h>
20 #include <linux/module.h>
21 #include <sound/core.h>
22 #include <sound/pcm.h>
23 #include <sound/ac97_codec.h>
24 #include <sound/info.h>
25 #include <sound/initval.h>
26 
27 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
28 MODULE_DESCRIPTION("Intel 82801AA,82901AB,i810,i820,i830,i840,i845,MX440; SiS 7012; Ali 5455");
29 MODULE_LICENSE("GPL");
30 MODULE_SUPPORTED_DEVICE("{{Intel,82801AA-ICH},"
31 		"{Intel,82901AB-ICH0},"
32 		"{Intel,82801BA-ICH2},"
33 		"{Intel,82801CA-ICH3},"
34 		"{Intel,82801DB-ICH4},"
35 		"{Intel,ICH5},"
36 		"{Intel,ICH6},"
37 		"{Intel,ICH7},"
38 		"{Intel,6300ESB},"
39 		"{Intel,ESB2},"
40 		"{Intel,MX440},"
41 		"{SiS,SI7012},"
42 		"{NVidia,nForce Audio},"
43 		"{NVidia,nForce2 Audio},"
44 		"{NVidia,nForce3 Audio},"
45 		"{NVidia,MCP04},"
46 		"{NVidia,MCP501},"
47 		"{NVidia,CK804},"
48 		"{NVidia,CK8},"
49 		"{NVidia,CK8S},"
50 		"{AMD,AMD768},"
51 		"{AMD,AMD8111},"
52 	        "{ALI,M5455}}");
53 
54 static int index = SNDRV_DEFAULT_IDX1;	/* Index 0-MAX */
55 static char *id = SNDRV_DEFAULT_STR1;	/* ID for this card */
56 static int ac97_clock;
57 static char *ac97_quirk;
58 static bool buggy_semaphore;
59 static int buggy_irq = -1; /* auto-check */
60 static bool xbox;
61 static int spdif_aclink = -1;
62 static int inside_vm = -1;
63 
64 module_param(index, int, 0444);
65 MODULE_PARM_DESC(index, "Index value for Intel i8x0 soundcard.");
66 module_param(id, charp, 0444);
67 MODULE_PARM_DESC(id, "ID string for Intel i8x0 soundcard.");
68 module_param(ac97_clock, int, 0444);
69 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (0 = whitelist + auto-detect, 1 = force autodetect).");
70 module_param(ac97_quirk, charp, 0444);
71 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
72 module_param(buggy_semaphore, bool, 0444);
73 MODULE_PARM_DESC(buggy_semaphore, "Enable workaround for hardwares with problematic codec semaphores.");
74 module_param(buggy_irq, bint, 0444);
75 MODULE_PARM_DESC(buggy_irq, "Enable workaround for buggy interrupts on some motherboards.");
76 module_param(xbox, bool, 0444);
77 MODULE_PARM_DESC(xbox, "Set to 1 for Xbox, if you have problems with the AC'97 codec detection.");
78 module_param(spdif_aclink, int, 0444);
79 MODULE_PARM_DESC(spdif_aclink, "S/PDIF over AC-link.");
80 module_param(inside_vm, bint, 0444);
81 MODULE_PARM_DESC(inside_vm, "KVM/Parallels optimization.");
82 
83 /* just for backward compatibility */
84 static bool enable;
85 module_param(enable, bool, 0444);
86 static int joystick;
87 module_param(joystick, int, 0444);
88 
89 /*
90  *  Direct registers
91  */
92 enum { DEVICE_INTEL, DEVICE_INTEL_ICH4, DEVICE_SIS, DEVICE_ALI, DEVICE_NFORCE };
93 
94 #define ICHREG(x) ICH_REG_##x
95 
96 #define DEFINE_REGSET(name,base) \
97 enum { \
98 	ICH_REG_##name##_BDBAR	= base + 0x0,	/* dword - buffer descriptor list base address */ \
99 	ICH_REG_##name##_CIV	= base + 0x04,	/* byte - current index value */ \
100 	ICH_REG_##name##_LVI	= base + 0x05,	/* byte - last valid index */ \
101 	ICH_REG_##name##_SR	= base + 0x06,	/* byte - status register */ \
102 	ICH_REG_##name##_PICB	= base + 0x08,	/* word - position in current buffer */ \
103 	ICH_REG_##name##_PIV	= base + 0x0a,	/* byte - prefetched index value */ \
104 	ICH_REG_##name##_CR	= base + 0x0b,	/* byte - control register */ \
105 };
106 
107 /* busmaster blocks */
108 DEFINE_REGSET(OFF, 0);		/* offset */
109 DEFINE_REGSET(PI, 0x00);	/* PCM in */
110 DEFINE_REGSET(PO, 0x10);	/* PCM out */
111 DEFINE_REGSET(MC, 0x20);	/* Mic in */
112 
113 /* ICH4 busmaster blocks */
114 DEFINE_REGSET(MC2, 0x40);	/* Mic in 2 */
115 DEFINE_REGSET(PI2, 0x50);	/* PCM in 2 */
116 DEFINE_REGSET(SP, 0x60);	/* SPDIF out */
117 
118 /* values for each busmaster block */
119 
120 /* LVI */
121 #define ICH_REG_LVI_MASK		0x1f
122 
123 /* SR */
124 #define ICH_FIFOE			0x10	/* FIFO error */
125 #define ICH_BCIS			0x08	/* buffer completion interrupt status */
126 #define ICH_LVBCI			0x04	/* last valid buffer completion interrupt */
127 #define ICH_CELV			0x02	/* current equals last valid */
128 #define ICH_DCH				0x01	/* DMA controller halted */
129 
130 /* PIV */
131 #define ICH_REG_PIV_MASK		0x1f	/* mask */
132 
133 /* CR */
134 #define ICH_IOCE			0x10	/* interrupt on completion enable */
135 #define ICH_FEIE			0x08	/* fifo error interrupt enable */
136 #define ICH_LVBIE			0x04	/* last valid buffer interrupt enable */
137 #define ICH_RESETREGS			0x02	/* reset busmaster registers */
138 #define ICH_STARTBM			0x01	/* start busmaster operation */
139 
140 
141 /* global block */
142 #define ICH_REG_GLOB_CNT		0x2c	/* dword - global control */
143 #define   ICH_PCM_SPDIF_MASK	0xc0000000	/* s/pdif pcm slot mask (ICH4) */
144 #define   ICH_PCM_SPDIF_NONE	0x00000000	/* reserved - undefined */
145 #define   ICH_PCM_SPDIF_78	0x40000000	/* s/pdif pcm on slots 7&8 */
146 #define   ICH_PCM_SPDIF_69	0x80000000	/* s/pdif pcm on slots 6&9 */
147 #define   ICH_PCM_SPDIF_1011	0xc0000000	/* s/pdif pcm on slots 10&11 */
148 #define   ICH_PCM_20BIT		0x00400000	/* 20-bit samples (ICH4) */
149 #define   ICH_PCM_246_MASK	0x00300000	/* chan mask (not all chips) */
150 #define   ICH_PCM_8		0x00300000      /* 8 channels (not all chips) */
151 #define   ICH_PCM_6		0x00200000	/* 6 channels (not all chips) */
152 #define   ICH_PCM_4		0x00100000	/* 4 channels (not all chips) */
153 #define   ICH_PCM_2		0x00000000	/* 2 channels (stereo) */
154 #define   ICH_SIS_PCM_246_MASK	0x000000c0	/* 6 channels (SIS7012) */
155 #define   ICH_SIS_PCM_6		0x00000080	/* 6 channels (SIS7012) */
156 #define   ICH_SIS_PCM_4		0x00000040	/* 4 channels (SIS7012) */
157 #define   ICH_SIS_PCM_2		0x00000000	/* 2 channels (SIS7012) */
158 #define   ICH_TRIE		0x00000040	/* tertiary resume interrupt enable */
159 #define   ICH_SRIE		0x00000020	/* secondary resume interrupt enable */
160 #define   ICH_PRIE		0x00000010	/* primary resume interrupt enable */
161 #define   ICH_ACLINK		0x00000008	/* AClink shut off */
162 #define   ICH_AC97WARM		0x00000004	/* AC'97 warm reset */
163 #define   ICH_AC97COLD		0x00000002	/* AC'97 cold reset */
164 #define   ICH_GIE		0x00000001	/* GPI interrupt enable */
165 #define ICH_REG_GLOB_STA		0x30	/* dword - global status */
166 #define   ICH_TRI		0x20000000	/* ICH4: tertiary (AC_SDIN2) resume interrupt */
167 #define   ICH_TCR		0x10000000	/* ICH4: tertiary (AC_SDIN2) codec ready */
168 #define   ICH_BCS		0x08000000	/* ICH4: bit clock stopped */
169 #define   ICH_SPINT		0x04000000	/* ICH4: S/PDIF interrupt */
170 #define   ICH_P2INT		0x02000000	/* ICH4: PCM2-In interrupt */
171 #define   ICH_M2INT		0x01000000	/* ICH4: Mic2-In interrupt */
172 #define   ICH_SAMPLE_CAP	0x00c00000	/* ICH4: sample capability bits (RO) */
173 #define   ICH_SAMPLE_16_20	0x00400000	/* ICH4: 16- and 20-bit samples */
174 #define   ICH_MULTICHAN_CAP	0x00300000	/* ICH4: multi-channel capability bits (RO) */
175 #define   ICH_SIS_TRI		0x00080000	/* SIS: tertiary resume irq */
176 #define   ICH_SIS_TCR		0x00040000	/* SIS: tertiary codec ready */
177 #define   ICH_MD3		0x00020000	/* modem power down semaphore */
178 #define   ICH_AD3		0x00010000	/* audio power down semaphore */
179 #define   ICH_RCS		0x00008000	/* read completion status */
180 #define   ICH_BIT3		0x00004000	/* bit 3 slot 12 */
181 #define   ICH_BIT2		0x00002000	/* bit 2 slot 12 */
182 #define   ICH_BIT1		0x00001000	/* bit 1 slot 12 */
183 #define   ICH_SRI		0x00000800	/* secondary (AC_SDIN1) resume interrupt */
184 #define   ICH_PRI		0x00000400	/* primary (AC_SDIN0) resume interrupt */
185 #define   ICH_SCR		0x00000200	/* secondary (AC_SDIN1) codec ready */
186 #define   ICH_PCR		0x00000100	/* primary (AC_SDIN0) codec ready */
187 #define   ICH_MCINT		0x00000080	/* MIC capture interrupt */
188 #define   ICH_POINT		0x00000040	/* playback interrupt */
189 #define   ICH_PIINT		0x00000020	/* capture interrupt */
190 #define   ICH_NVSPINT		0x00000010	/* nforce spdif interrupt */
191 #define   ICH_MOINT		0x00000004	/* modem playback interrupt */
192 #define   ICH_MIINT		0x00000002	/* modem capture interrupt */
193 #define   ICH_GSCI		0x00000001	/* GPI status change interrupt */
194 #define ICH_REG_ACC_SEMA		0x34	/* byte - codec write semaphore */
195 #define   ICH_CAS		0x01		/* codec access semaphore */
196 #define ICH_REG_SDM		0x80
197 #define   ICH_DI2L_MASK		0x000000c0	/* PCM In 2, Mic In 2 data in line */
198 #define   ICH_DI2L_SHIFT	6
199 #define   ICH_DI1L_MASK		0x00000030	/* PCM In 1, Mic In 1 data in line */
200 #define   ICH_DI1L_SHIFT	4
201 #define   ICH_SE		0x00000008	/* steer enable */
202 #define   ICH_LDI_MASK		0x00000003	/* last codec read data input */
203 
204 #define ICH_MAX_FRAGS		32		/* max hw frags */
205 
206 
207 /*
208  * registers for Ali5455
209  */
210 
211 /* ALi 5455 busmaster blocks */
212 DEFINE_REGSET(AL_PI, 0x40);	/* ALi PCM in */
213 DEFINE_REGSET(AL_PO, 0x50);	/* Ali PCM out */
214 DEFINE_REGSET(AL_MC, 0x60);	/* Ali Mic in */
215 DEFINE_REGSET(AL_CDC_SPO, 0x70);	/* Ali Codec SPDIF out */
216 DEFINE_REGSET(AL_CENTER, 0x80);		/* Ali center out */
217 DEFINE_REGSET(AL_LFE, 0x90);		/* Ali center out */
218 DEFINE_REGSET(AL_CLR_SPI, 0xa0);	/* Ali Controller SPDIF in */
219 DEFINE_REGSET(AL_CLR_SPO, 0xb0);	/* Ali Controller SPDIF out */
220 DEFINE_REGSET(AL_I2S, 0xc0);	/* Ali I2S in */
221 DEFINE_REGSET(AL_PI2, 0xd0);	/* Ali PCM2 in */
222 DEFINE_REGSET(AL_MC2, 0xe0);	/* Ali Mic2 in */
223 
224 enum {
225 	ICH_REG_ALI_SCR = 0x00,		/* System Control Register */
226 	ICH_REG_ALI_SSR = 0x04,		/* System Status Register  */
227 	ICH_REG_ALI_DMACR = 0x08,	/* DMA Control Register    */
228 	ICH_REG_ALI_FIFOCR1 = 0x0c,	/* FIFO Control Register 1  */
229 	ICH_REG_ALI_INTERFACECR = 0x10,	/* Interface Control Register */
230 	ICH_REG_ALI_INTERRUPTCR = 0x14,	/* Interrupt control Register */
231 	ICH_REG_ALI_INTERRUPTSR = 0x18,	/* Interrupt  Status Register */
232 	ICH_REG_ALI_FIFOCR2 = 0x1c,	/* FIFO Control Register 2   */
233 	ICH_REG_ALI_CPR = 0x20,		/* Command Port Register     */
234 	ICH_REG_ALI_CPR_ADDR = 0x22,	/* ac97 addr write */
235 	ICH_REG_ALI_SPR = 0x24,		/* Status Port Register      */
236 	ICH_REG_ALI_SPR_ADDR = 0x26,	/* ac97 addr read */
237 	ICH_REG_ALI_FIFOCR3 = 0x2c,	/* FIFO Control Register 3  */
238 	ICH_REG_ALI_TTSR = 0x30,	/* Transmit Tag Slot Register */
239 	ICH_REG_ALI_RTSR = 0x34,	/* Receive Tag Slot  Register */
240 	ICH_REG_ALI_CSPSR = 0x38,	/* Command/Status Port Status Register */
241 	ICH_REG_ALI_CAS = 0x3c,		/* Codec Write Semaphore Register */
242 	ICH_REG_ALI_HWVOL = 0xf0,	/* hardware volume control/status */
243 	ICH_REG_ALI_I2SCR = 0xf4,	/* I2S control/status */
244 	ICH_REG_ALI_SPDIFCSR = 0xf8,	/* spdif channel status register  */
245 	ICH_REG_ALI_SPDIFICS = 0xfc,	/* spdif interface control/status  */
246 };
247 
248 #define ALI_CAS_SEM_BUSY	0x80000000
249 #define ALI_CPR_ADDR_SECONDARY	0x100
250 #define ALI_CPR_ADDR_READ	0x80
251 #define ALI_CSPSR_CODEC_READY	0x08
252 #define ALI_CSPSR_READ_OK	0x02
253 #define ALI_CSPSR_WRITE_OK	0x01
254 
255 /* interrupts for the whole chip by interrupt status register finish */
256 
257 #define ALI_INT_MICIN2		(1<<26)
258 #define ALI_INT_PCMIN2		(1<<25)
259 #define ALI_INT_I2SIN		(1<<24)
260 #define ALI_INT_SPDIFOUT	(1<<23)	/* controller spdif out INTERRUPT */
261 #define ALI_INT_SPDIFIN		(1<<22)
262 #define ALI_INT_LFEOUT		(1<<21)
263 #define ALI_INT_CENTEROUT	(1<<20)
264 #define ALI_INT_CODECSPDIFOUT	(1<<19)
265 #define ALI_INT_MICIN		(1<<18)
266 #define ALI_INT_PCMOUT		(1<<17)
267 #define ALI_INT_PCMIN		(1<<16)
268 #define ALI_INT_CPRAIS		(1<<7)	/* command port available */
269 #define ALI_INT_SPRAIS		(1<<5)	/* status port available */
270 #define ALI_INT_GPIO		(1<<1)
271 #define ALI_INT_MASK		(ALI_INT_SPDIFOUT|ALI_INT_CODECSPDIFOUT|\
272 				 ALI_INT_MICIN|ALI_INT_PCMOUT|ALI_INT_PCMIN)
273 
274 #define ICH_ALI_SC_RESET	(1<<31)	/* master reset */
275 #define ICH_ALI_SC_AC97_DBL	(1<<30)
276 #define ICH_ALI_SC_CODEC_SPDF	(3<<20)	/* 1=7/8, 2=6/9, 3=10/11 */
277 #define ICH_ALI_SC_IN_BITS	(3<<18)
278 #define ICH_ALI_SC_OUT_BITS	(3<<16)
279 #define ICH_ALI_SC_6CH_CFG	(3<<14)
280 #define ICH_ALI_SC_PCM_4	(1<<8)
281 #define ICH_ALI_SC_PCM_6	(2<<8)
282 #define ICH_ALI_SC_PCM_246_MASK	(3<<8)
283 
284 #define ICH_ALI_SS_SEC_ID	(3<<5)
285 #define ICH_ALI_SS_PRI_ID	(3<<3)
286 
287 #define ICH_ALI_IF_AC97SP	(1<<21)
288 #define ICH_ALI_IF_MC		(1<<20)
289 #define ICH_ALI_IF_PI		(1<<19)
290 #define ICH_ALI_IF_MC2		(1<<18)
291 #define ICH_ALI_IF_PI2		(1<<17)
292 #define ICH_ALI_IF_LINE_SRC	(1<<15)	/* 0/1 = slot 3/6 */
293 #define ICH_ALI_IF_MIC_SRC	(1<<14)	/* 0/1 = slot 3/6 */
294 #define ICH_ALI_IF_SPDF_SRC	(3<<12)	/* 00 = PCM, 01 = AC97-in, 10 = spdif-in, 11 = i2s */
295 #define ICH_ALI_IF_AC97_OUT	(3<<8)	/* 00 = PCM, 10 = spdif-in, 11 = i2s */
296 #define ICH_ALI_IF_PO_SPDF	(1<<3)
297 #define ICH_ALI_IF_PO		(1<<1)
298 
299 /*
300  *
301  */
302 
303 enum {
304 	ICHD_PCMIN,
305 	ICHD_PCMOUT,
306 	ICHD_MIC,
307 	ICHD_MIC2,
308 	ICHD_PCM2IN,
309 	ICHD_SPBAR,
310 	ICHD_LAST = ICHD_SPBAR
311 };
312 enum {
313 	NVD_PCMIN,
314 	NVD_PCMOUT,
315 	NVD_MIC,
316 	NVD_SPBAR,
317 	NVD_LAST = NVD_SPBAR
318 };
319 enum {
320 	ALID_PCMIN,
321 	ALID_PCMOUT,
322 	ALID_MIC,
323 	ALID_AC97SPDIFOUT,
324 	ALID_SPDIFIN,
325 	ALID_SPDIFOUT,
326 	ALID_LAST = ALID_SPDIFOUT
327 };
328 
329 #define get_ichdev(substream) (substream->runtime->private_data)
330 
331 struct ichdev {
332 	unsigned int ichd;			/* ich device number */
333 	unsigned long reg_offset;		/* offset to bmaddr */
334 	__le32 *bdbar;				/* CPU address (32bit) */
335 	unsigned int bdbar_addr;		/* PCI bus address (32bit) */
336 	struct snd_pcm_substream *substream;
337 	unsigned int physbuf;			/* physical address (32bit) */
338         unsigned int size;
339         unsigned int fragsize;
340         unsigned int fragsize1;
341         unsigned int position;
342 	unsigned int pos_shift;
343 	unsigned int last_pos;
344         int frags;
345         int lvi;
346         int lvi_frag;
347 	int civ;
348 	int ack;
349 	int ack_reload;
350 	unsigned int ack_bit;
351 	unsigned int roff_sr;
352 	unsigned int roff_picb;
353 	unsigned int int_sta_mask;		/* interrupt status mask */
354 	unsigned int ali_slot;			/* ALI DMA slot */
355 	struct ac97_pcm *pcm;
356 	int pcm_open_flag;
357 	unsigned int suspended: 1;
358 };
359 
360 struct intel8x0 {
361 	unsigned int device_type;
362 
363 	int irq;
364 
365 	void __iomem *addr;
366 	void __iomem *bmaddr;
367 
368 	struct pci_dev *pci;
369 	struct snd_card *card;
370 
371 	int pcm_devs;
372 	struct snd_pcm *pcm[6];
373 	struct ichdev ichd[6];
374 
375 	unsigned multi4: 1,
376 		 multi6: 1,
377 		 multi8 :1,
378 		 dra: 1,
379 		 smp20bit: 1;
380 	unsigned in_ac97_init: 1,
381 		 in_sdin_init: 1;
382 	unsigned in_measurement: 1;	/* during ac97 clock measurement */
383 	unsigned fix_nocache: 1; 	/* workaround for 440MX */
384 	unsigned buggy_irq: 1;		/* workaround for buggy mobos */
385 	unsigned xbox: 1;		/* workaround for Xbox AC'97 detection */
386 	unsigned buggy_semaphore: 1;	/* workaround for buggy codec semaphore */
387 	unsigned inside_vm: 1;		/* enable VM optimization */
388 
389 	int spdif_idx;	/* SPDIF BAR index; *_SPBAR or -1 if use PCMOUT */
390 	unsigned int sdm_saved;	/* SDM reg value */
391 
392 	struct snd_ac97_bus *ac97_bus;
393 	struct snd_ac97 *ac97[3];
394 	unsigned int ac97_sdin[3];
395 	unsigned int max_codecs, ncodecs;
396 	const unsigned int *codec_bit;
397 	unsigned int codec_isr_bits;
398 	unsigned int codec_ready_bits;
399 
400 	spinlock_t reg_lock;
401 
402 	u32 bdbars_count;
403 	struct snd_dma_buffer bdbars;
404 	u32 int_sta_reg;		/* interrupt status register */
405 	u32 int_sta_mask;		/* interrupt status mask */
406 };
407 
408 static const struct pci_device_id snd_intel8x0_ids[] = {
409 	{ PCI_VDEVICE(INTEL, 0x2415), DEVICE_INTEL },	/* 82801AA */
410 	{ PCI_VDEVICE(INTEL, 0x2425), DEVICE_INTEL },	/* 82901AB */
411 	{ PCI_VDEVICE(INTEL, 0x2445), DEVICE_INTEL },	/* 82801BA */
412 	{ PCI_VDEVICE(INTEL, 0x2485), DEVICE_INTEL },	/* ICH3 */
413 	{ PCI_VDEVICE(INTEL, 0x24c5), DEVICE_INTEL_ICH4 }, /* ICH4 */
414 	{ PCI_VDEVICE(INTEL, 0x24d5), DEVICE_INTEL_ICH4 }, /* ICH5 */
415 	{ PCI_VDEVICE(INTEL, 0x25a6), DEVICE_INTEL_ICH4 }, /* ESB */
416 	{ PCI_VDEVICE(INTEL, 0x266e), DEVICE_INTEL_ICH4 }, /* ICH6 */
417 	{ PCI_VDEVICE(INTEL, 0x27de), DEVICE_INTEL_ICH4 }, /* ICH7 */
418 	{ PCI_VDEVICE(INTEL, 0x2698), DEVICE_INTEL_ICH4 }, /* ESB2 */
419 	{ PCI_VDEVICE(INTEL, 0x7195), DEVICE_INTEL },	/* 440MX */
420 	{ PCI_VDEVICE(SI, 0x7012), DEVICE_SIS },	/* SI7012 */
421 	{ PCI_VDEVICE(NVIDIA, 0x01b1), DEVICE_NFORCE },	/* NFORCE */
422 	{ PCI_VDEVICE(NVIDIA, 0x003a), DEVICE_NFORCE },	/* MCP04 */
423 	{ PCI_VDEVICE(NVIDIA, 0x006a), DEVICE_NFORCE },	/* NFORCE2 */
424 	{ PCI_VDEVICE(NVIDIA, 0x0059), DEVICE_NFORCE },	/* CK804 */
425 	{ PCI_VDEVICE(NVIDIA, 0x008a), DEVICE_NFORCE },	/* CK8 */
426 	{ PCI_VDEVICE(NVIDIA, 0x00da), DEVICE_NFORCE },	/* NFORCE3 */
427 	{ PCI_VDEVICE(NVIDIA, 0x00ea), DEVICE_NFORCE },	/* CK8S */
428 	{ PCI_VDEVICE(NVIDIA, 0x026b), DEVICE_NFORCE },	/* MCP51 */
429 	{ PCI_VDEVICE(AMD, 0x746d), DEVICE_INTEL },	/* AMD8111 */
430 	{ PCI_VDEVICE(AMD, 0x7445), DEVICE_INTEL },	/* AMD768 */
431 	{ PCI_VDEVICE(AL, 0x5455), DEVICE_ALI },   /* Ali5455 */
432 	{ 0, }
433 };
434 
435 MODULE_DEVICE_TABLE(pci, snd_intel8x0_ids);
436 
437 /*
438  *  Lowlevel I/O - busmaster
439  */
440 
441 static inline u8 igetbyte(struct intel8x0 *chip, u32 offset)
442 {
443 	return ioread8(chip->bmaddr + offset);
444 }
445 
446 static inline u16 igetword(struct intel8x0 *chip, u32 offset)
447 {
448 	return ioread16(chip->bmaddr + offset);
449 }
450 
451 static inline u32 igetdword(struct intel8x0 *chip, u32 offset)
452 {
453 	return ioread32(chip->bmaddr + offset);
454 }
455 
456 static inline void iputbyte(struct intel8x0 *chip, u32 offset, u8 val)
457 {
458 	iowrite8(val, chip->bmaddr + offset);
459 }
460 
461 static inline void iputword(struct intel8x0 *chip, u32 offset, u16 val)
462 {
463 	iowrite16(val, chip->bmaddr + offset);
464 }
465 
466 static inline void iputdword(struct intel8x0 *chip, u32 offset, u32 val)
467 {
468 	iowrite32(val, chip->bmaddr + offset);
469 }
470 
471 /*
472  *  Lowlevel I/O - AC'97 registers
473  */
474 
475 static inline u16 iagetword(struct intel8x0 *chip, u32 offset)
476 {
477 	return ioread16(chip->addr + offset);
478 }
479 
480 static inline void iaputword(struct intel8x0 *chip, u32 offset, u16 val)
481 {
482 	iowrite16(val, chip->addr + offset);
483 }
484 
485 /*
486  *  Basic I/O
487  */
488 
489 /*
490  * access to AC97 codec via normal i/o (for ICH and SIS7012)
491  */
492 
493 static int snd_intel8x0_codec_semaphore(struct intel8x0 *chip, unsigned int codec)
494 {
495 	int time;
496 
497 	if (codec > 2)
498 		return -EIO;
499 	if (chip->in_sdin_init) {
500 		/* we don't know the ready bit assignment at the moment */
501 		/* so we check any */
502 		codec = chip->codec_isr_bits;
503 	} else {
504 		codec = chip->codec_bit[chip->ac97_sdin[codec]];
505 	}
506 
507 	/* codec ready ? */
508 	if ((igetdword(chip, ICHREG(GLOB_STA)) & codec) == 0)
509 		return -EIO;
510 
511 	if (chip->buggy_semaphore)
512 		return 0; /* just ignore ... */
513 
514 	/* Anyone holding a semaphore for 1 msec should be shot... */
515 	time = 100;
516       	do {
517       		if (!(igetbyte(chip, ICHREG(ACC_SEMA)) & ICH_CAS))
518       			return 0;
519 		udelay(10);
520 	} while (time--);
521 
522 	/* access to some forbidden (non existent) ac97 registers will not
523 	 * reset the semaphore. So even if you don't get the semaphore, still
524 	 * continue the access. We don't need the semaphore anyway. */
525 	dev_err(chip->card->dev,
526 		"codec_semaphore: semaphore is not ready [0x%x][0x%x]\n",
527 			igetbyte(chip, ICHREG(ACC_SEMA)), igetdword(chip, ICHREG(GLOB_STA)));
528 	iagetword(chip, 0);	/* clear semaphore flag */
529 	/* I don't care about the semaphore */
530 	return -EBUSY;
531 }
532 
533 static void snd_intel8x0_codec_write(struct snd_ac97 *ac97,
534 				     unsigned short reg,
535 				     unsigned short val)
536 {
537 	struct intel8x0 *chip = ac97->private_data;
538 
539 	if (snd_intel8x0_codec_semaphore(chip, ac97->num) < 0) {
540 		if (! chip->in_ac97_init)
541 			dev_err(chip->card->dev,
542 				"codec_write %d: semaphore is not ready for register 0x%x\n",
543 				ac97->num, reg);
544 	}
545 	iaputword(chip, reg + ac97->num * 0x80, val);
546 }
547 
548 static unsigned short snd_intel8x0_codec_read(struct snd_ac97 *ac97,
549 					      unsigned short reg)
550 {
551 	struct intel8x0 *chip = ac97->private_data;
552 	unsigned short res;
553 	unsigned int tmp;
554 
555 	if (snd_intel8x0_codec_semaphore(chip, ac97->num) < 0) {
556 		if (! chip->in_ac97_init)
557 			dev_err(chip->card->dev,
558 				"codec_read %d: semaphore is not ready for register 0x%x\n",
559 				ac97->num, reg);
560 		res = 0xffff;
561 	} else {
562 		res = iagetword(chip, reg + ac97->num * 0x80);
563 		if ((tmp = igetdword(chip, ICHREG(GLOB_STA))) & ICH_RCS) {
564 			/* reset RCS and preserve other R/WC bits */
565 			iputdword(chip, ICHREG(GLOB_STA), tmp &
566 				  ~(chip->codec_ready_bits | ICH_GSCI));
567 			if (! chip->in_ac97_init)
568 				dev_err(chip->card->dev,
569 					"codec_read %d: read timeout for register 0x%x\n",
570 					ac97->num, reg);
571 			res = 0xffff;
572 		}
573 	}
574 	return res;
575 }
576 
577 static void snd_intel8x0_codec_read_test(struct intel8x0 *chip,
578 					 unsigned int codec)
579 {
580 	unsigned int tmp;
581 
582 	if (snd_intel8x0_codec_semaphore(chip, codec) >= 0) {
583 		iagetword(chip, codec * 0x80);
584 		if ((tmp = igetdword(chip, ICHREG(GLOB_STA))) & ICH_RCS) {
585 			/* reset RCS and preserve other R/WC bits */
586 			iputdword(chip, ICHREG(GLOB_STA), tmp &
587 				  ~(chip->codec_ready_bits | ICH_GSCI));
588 		}
589 	}
590 }
591 
592 /*
593  * access to AC97 for Ali5455
594  */
595 static int snd_intel8x0_ali_codec_ready(struct intel8x0 *chip, int mask)
596 {
597 	int count = 0;
598 	for (count = 0; count < 0x7f; count++) {
599 		int val = igetbyte(chip, ICHREG(ALI_CSPSR));
600 		if (val & mask)
601 			return 0;
602 	}
603 	if (! chip->in_ac97_init)
604 		dev_warn(chip->card->dev, "AC97 codec ready timeout.\n");
605 	return -EBUSY;
606 }
607 
608 static int snd_intel8x0_ali_codec_semaphore(struct intel8x0 *chip)
609 {
610 	int time = 100;
611 	if (chip->buggy_semaphore)
612 		return 0; /* just ignore ... */
613 	while (--time && (igetdword(chip, ICHREG(ALI_CAS)) & ALI_CAS_SEM_BUSY))
614 		udelay(1);
615 	if (! time && ! chip->in_ac97_init)
616 		dev_warn(chip->card->dev, "ali_codec_semaphore timeout\n");
617 	return snd_intel8x0_ali_codec_ready(chip, ALI_CSPSR_CODEC_READY);
618 }
619 
620 static unsigned short snd_intel8x0_ali_codec_read(struct snd_ac97 *ac97, unsigned short reg)
621 {
622 	struct intel8x0 *chip = ac97->private_data;
623 	unsigned short data = 0xffff;
624 
625 	if (snd_intel8x0_ali_codec_semaphore(chip))
626 		goto __err;
627 	reg |= ALI_CPR_ADDR_READ;
628 	if (ac97->num)
629 		reg |= ALI_CPR_ADDR_SECONDARY;
630 	iputword(chip, ICHREG(ALI_CPR_ADDR), reg);
631 	if (snd_intel8x0_ali_codec_ready(chip, ALI_CSPSR_READ_OK))
632 		goto __err;
633 	data = igetword(chip, ICHREG(ALI_SPR));
634  __err:
635 	return data;
636 }
637 
638 static void snd_intel8x0_ali_codec_write(struct snd_ac97 *ac97, unsigned short reg,
639 					 unsigned short val)
640 {
641 	struct intel8x0 *chip = ac97->private_data;
642 
643 	if (snd_intel8x0_ali_codec_semaphore(chip))
644 		return;
645 	iputword(chip, ICHREG(ALI_CPR), val);
646 	if (ac97->num)
647 		reg |= ALI_CPR_ADDR_SECONDARY;
648 	iputword(chip, ICHREG(ALI_CPR_ADDR), reg);
649 	snd_intel8x0_ali_codec_ready(chip, ALI_CSPSR_WRITE_OK);
650 }
651 
652 
653 /*
654  * DMA I/O
655  */
656 static void snd_intel8x0_setup_periods(struct intel8x0 *chip, struct ichdev *ichdev)
657 {
658 	int idx;
659 	__le32 *bdbar = ichdev->bdbar;
660 	unsigned long port = ichdev->reg_offset;
661 
662 	iputdword(chip, port + ICH_REG_OFF_BDBAR, ichdev->bdbar_addr);
663 	if (ichdev->size == ichdev->fragsize) {
664 		ichdev->ack_reload = ichdev->ack = 2;
665 		ichdev->fragsize1 = ichdev->fragsize >> 1;
666 		for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 4) {
667 			bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf);
668 			bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
669 						     ichdev->fragsize1 >> ichdev->pos_shift);
670 			bdbar[idx + 2] = cpu_to_le32(ichdev->physbuf + (ichdev->size >> 1));
671 			bdbar[idx + 3] = cpu_to_le32(0x80000000 | /* interrupt on completion */
672 						     ichdev->fragsize1 >> ichdev->pos_shift);
673 		}
674 		ichdev->frags = 2;
675 	} else {
676 		ichdev->ack_reload = ichdev->ack = 1;
677 		ichdev->fragsize1 = ichdev->fragsize;
678 		for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 2) {
679 			bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf +
680 						     (((idx >> 1) * ichdev->fragsize) %
681 						      ichdev->size));
682 			bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
683 						     ichdev->fragsize >> ichdev->pos_shift);
684 #if 0
685 			dev_dbg(chip->card->dev, "bdbar[%i] = 0x%x [0x%x]\n",
686 			       idx + 0, bdbar[idx + 0], bdbar[idx + 1]);
687 #endif
688 		}
689 		ichdev->frags = ichdev->size / ichdev->fragsize;
690 	}
691 	iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi = ICH_REG_LVI_MASK);
692 	ichdev->civ = 0;
693 	iputbyte(chip, port + ICH_REG_OFF_CIV, 0);
694 	ichdev->lvi_frag = ICH_REG_LVI_MASK % ichdev->frags;
695 	ichdev->position = 0;
696 #if 0
697 	dev_dbg(chip->card->dev,
698 		"lvi_frag = %i, frags = %i, period_size = 0x%x, period_size1 = 0x%x\n",
699 	       ichdev->lvi_frag, ichdev->frags, ichdev->fragsize,
700 	       ichdev->fragsize1);
701 #endif
702 	/* clear interrupts */
703 	iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
704 }
705 
706 /*
707  *  Interrupt handler
708  */
709 
710 static inline void snd_intel8x0_update(struct intel8x0 *chip, struct ichdev *ichdev)
711 {
712 	unsigned long port = ichdev->reg_offset;
713 	unsigned long flags;
714 	int status, civ, i, step;
715 	int ack = 0;
716 
717 	spin_lock_irqsave(&chip->reg_lock, flags);
718 	status = igetbyte(chip, port + ichdev->roff_sr);
719 	civ = igetbyte(chip, port + ICH_REG_OFF_CIV);
720 	if (!(status & ICH_BCIS)) {
721 		step = 0;
722 	} else if (civ == ichdev->civ) {
723 		// snd_printd("civ same %d\n", civ);
724 		step = 1;
725 		ichdev->civ++;
726 		ichdev->civ &= ICH_REG_LVI_MASK;
727 	} else {
728 		step = civ - ichdev->civ;
729 		if (step < 0)
730 			step += ICH_REG_LVI_MASK + 1;
731 		// if (step != 1)
732 		//	snd_printd("step = %d, %d -> %d\n", step, ichdev->civ, civ);
733 		ichdev->civ = civ;
734 	}
735 
736 	ichdev->position += step * ichdev->fragsize1;
737 	if (! chip->in_measurement)
738 		ichdev->position %= ichdev->size;
739 	ichdev->lvi += step;
740 	ichdev->lvi &= ICH_REG_LVI_MASK;
741 	iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi);
742 	for (i = 0; i < step; i++) {
743 		ichdev->lvi_frag++;
744 		ichdev->lvi_frag %= ichdev->frags;
745 		ichdev->bdbar[ichdev->lvi * 2] = cpu_to_le32(ichdev->physbuf + ichdev->lvi_frag * ichdev->fragsize1);
746 #if 0
747 	dev_dbg(chip->card->dev,
748 		"new: bdbar[%i] = 0x%x [0x%x], prefetch = %i, all = 0x%x, 0x%x\n",
749 	       ichdev->lvi * 2, ichdev->bdbar[ichdev->lvi * 2],
750 	       ichdev->bdbar[ichdev->lvi * 2 + 1], inb(ICH_REG_OFF_PIV + port),
751 	       inl(port + 4), inb(port + ICH_REG_OFF_CR));
752 #endif
753 		if (--ichdev->ack == 0) {
754 			ichdev->ack = ichdev->ack_reload;
755 			ack = 1;
756 		}
757 	}
758 	spin_unlock_irqrestore(&chip->reg_lock, flags);
759 	if (ack && ichdev->substream) {
760 		snd_pcm_period_elapsed(ichdev->substream);
761 	}
762 	iputbyte(chip, port + ichdev->roff_sr,
763 		 status & (ICH_FIFOE | ICH_BCIS | ICH_LVBCI));
764 }
765 
766 static irqreturn_t snd_intel8x0_interrupt(int irq, void *dev_id)
767 {
768 	struct intel8x0 *chip = dev_id;
769 	struct ichdev *ichdev;
770 	unsigned int status;
771 	unsigned int i;
772 
773 	status = igetdword(chip, chip->int_sta_reg);
774 	if (status == 0xffffffff)	/* we are not yet resumed */
775 		return IRQ_NONE;
776 
777 	if ((status & chip->int_sta_mask) == 0) {
778 		if (status) {
779 			/* ack */
780 			iputdword(chip, chip->int_sta_reg, status);
781 			if (! chip->buggy_irq)
782 				status = 0;
783 		}
784 		return IRQ_RETVAL(status);
785 	}
786 
787 	for (i = 0; i < chip->bdbars_count; i++) {
788 		ichdev = &chip->ichd[i];
789 		if (status & ichdev->int_sta_mask)
790 			snd_intel8x0_update(chip, ichdev);
791 	}
792 
793 	/* ack them */
794 	iputdword(chip, chip->int_sta_reg, status & chip->int_sta_mask);
795 
796 	return IRQ_HANDLED;
797 }
798 
799 /*
800  *  PCM part
801  */
802 
803 static int snd_intel8x0_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
804 {
805 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
806 	struct ichdev *ichdev = get_ichdev(substream);
807 	unsigned char val = 0;
808 	unsigned long port = ichdev->reg_offset;
809 
810 	switch (cmd) {
811 	case SNDRV_PCM_TRIGGER_RESUME:
812 		ichdev->suspended = 0;
813 		/* fall through */
814 	case SNDRV_PCM_TRIGGER_START:
815 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
816 		val = ICH_IOCE | ICH_STARTBM;
817 		ichdev->last_pos = ichdev->position;
818 		break;
819 	case SNDRV_PCM_TRIGGER_SUSPEND:
820 		ichdev->suspended = 1;
821 		/* fall through */
822 	case SNDRV_PCM_TRIGGER_STOP:
823 		val = 0;
824 		break;
825 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
826 		val = ICH_IOCE;
827 		break;
828 	default:
829 		return -EINVAL;
830 	}
831 	iputbyte(chip, port + ICH_REG_OFF_CR, val);
832 	if (cmd == SNDRV_PCM_TRIGGER_STOP) {
833 		/* wait until DMA stopped */
834 		while (!(igetbyte(chip, port + ichdev->roff_sr) & ICH_DCH)) ;
835 		/* reset whole DMA things */
836 		iputbyte(chip, port + ICH_REG_OFF_CR, ICH_RESETREGS);
837 	}
838 	return 0;
839 }
840 
841 static int snd_intel8x0_ali_trigger(struct snd_pcm_substream *substream, int cmd)
842 {
843 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
844 	struct ichdev *ichdev = get_ichdev(substream);
845 	unsigned long port = ichdev->reg_offset;
846 	static const int fiforeg[] = {
847 		ICHREG(ALI_FIFOCR1), ICHREG(ALI_FIFOCR2), ICHREG(ALI_FIFOCR3)
848 	};
849 	unsigned int val, fifo;
850 
851 	val = igetdword(chip, ICHREG(ALI_DMACR));
852 	switch (cmd) {
853 	case SNDRV_PCM_TRIGGER_RESUME:
854 		ichdev->suspended = 0;
855 		/* fall through */
856 	case SNDRV_PCM_TRIGGER_START:
857 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
858 		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
859 			/* clear FIFO for synchronization of channels */
860 			fifo = igetdword(chip, fiforeg[ichdev->ali_slot / 4]);
861 			fifo &= ~(0xff << (ichdev->ali_slot % 4));
862 			fifo |= 0x83 << (ichdev->ali_slot % 4);
863 			iputdword(chip, fiforeg[ichdev->ali_slot / 4], fifo);
864 		}
865 		iputbyte(chip, port + ICH_REG_OFF_CR, ICH_IOCE);
866 		val &= ~(1 << (ichdev->ali_slot + 16)); /* clear PAUSE flag */
867 		/* start DMA */
868 		iputdword(chip, ICHREG(ALI_DMACR), val | (1 << ichdev->ali_slot));
869 		break;
870 	case SNDRV_PCM_TRIGGER_SUSPEND:
871 		ichdev->suspended = 1;
872 		/* fall through */
873 	case SNDRV_PCM_TRIGGER_STOP:
874 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
875 		/* pause */
876 		iputdword(chip, ICHREG(ALI_DMACR), val | (1 << (ichdev->ali_slot + 16)));
877 		iputbyte(chip, port + ICH_REG_OFF_CR, 0);
878 		while (igetbyte(chip, port + ICH_REG_OFF_CR))
879 			;
880 		if (cmd == SNDRV_PCM_TRIGGER_PAUSE_PUSH)
881 			break;
882 		/* reset whole DMA things */
883 		iputbyte(chip, port + ICH_REG_OFF_CR, ICH_RESETREGS);
884 		/* clear interrupts */
885 		iputbyte(chip, port + ICH_REG_OFF_SR,
886 			 igetbyte(chip, port + ICH_REG_OFF_SR) | 0x1e);
887 		iputdword(chip, ICHREG(ALI_INTERRUPTSR),
888 			  igetdword(chip, ICHREG(ALI_INTERRUPTSR)) & ichdev->int_sta_mask);
889 		break;
890 	default:
891 		return -EINVAL;
892 	}
893 	return 0;
894 }
895 
896 static int snd_intel8x0_hw_params(struct snd_pcm_substream *substream,
897 				  struct snd_pcm_hw_params *hw_params)
898 {
899 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
900 	struct ichdev *ichdev = get_ichdev(substream);
901 	int dbl = params_rate(hw_params) > 48000;
902 	int err;
903 
904 	if (ichdev->pcm_open_flag) {
905 		snd_ac97_pcm_close(ichdev->pcm);
906 		ichdev->pcm_open_flag = 0;
907 	}
908 	err = snd_ac97_pcm_open(ichdev->pcm, params_rate(hw_params),
909 				params_channels(hw_params),
910 				ichdev->pcm->r[dbl].slots);
911 	if (err >= 0) {
912 		ichdev->pcm_open_flag = 1;
913 		/* Force SPDIF setting */
914 		if (ichdev->ichd == ICHD_PCMOUT && chip->spdif_idx < 0)
915 			snd_ac97_set_rate(ichdev->pcm->r[0].codec[0], AC97_SPDIF,
916 					  params_rate(hw_params));
917 	}
918 	return err;
919 }
920 
921 static int snd_intel8x0_hw_free(struct snd_pcm_substream *substream)
922 {
923 	struct ichdev *ichdev = get_ichdev(substream);
924 
925 	if (ichdev->pcm_open_flag) {
926 		snd_ac97_pcm_close(ichdev->pcm);
927 		ichdev->pcm_open_flag = 0;
928 	}
929 	return 0;
930 }
931 
932 static void snd_intel8x0_setup_pcm_out(struct intel8x0 *chip,
933 				       struct snd_pcm_runtime *runtime)
934 {
935 	unsigned int cnt;
936 	int dbl = runtime->rate > 48000;
937 
938 	spin_lock_irq(&chip->reg_lock);
939 	switch (chip->device_type) {
940 	case DEVICE_ALI:
941 		cnt = igetdword(chip, ICHREG(ALI_SCR));
942 		cnt &= ~ICH_ALI_SC_PCM_246_MASK;
943 		if (runtime->channels == 4 || dbl)
944 			cnt |= ICH_ALI_SC_PCM_4;
945 		else if (runtime->channels == 6)
946 			cnt |= ICH_ALI_SC_PCM_6;
947 		iputdword(chip, ICHREG(ALI_SCR), cnt);
948 		break;
949 	case DEVICE_SIS:
950 		cnt = igetdword(chip, ICHREG(GLOB_CNT));
951 		cnt &= ~ICH_SIS_PCM_246_MASK;
952 		if (runtime->channels == 4 || dbl)
953 			cnt |= ICH_SIS_PCM_4;
954 		else if (runtime->channels == 6)
955 			cnt |= ICH_SIS_PCM_6;
956 		iputdword(chip, ICHREG(GLOB_CNT), cnt);
957 		break;
958 	default:
959 		cnt = igetdword(chip, ICHREG(GLOB_CNT));
960 		cnt &= ~(ICH_PCM_246_MASK | ICH_PCM_20BIT);
961 		if (runtime->channels == 4 || dbl)
962 			cnt |= ICH_PCM_4;
963 		else if (runtime->channels == 6)
964 			cnt |= ICH_PCM_6;
965 		else if (runtime->channels == 8)
966 			cnt |= ICH_PCM_8;
967 		if (chip->device_type == DEVICE_NFORCE) {
968 			/* reset to 2ch once to keep the 6 channel data in alignment,
969 			 * to start from Front Left always
970 			 */
971 			if (cnt & ICH_PCM_246_MASK) {
972 				iputdword(chip, ICHREG(GLOB_CNT), cnt & ~ICH_PCM_246_MASK);
973 				spin_unlock_irq(&chip->reg_lock);
974 				msleep(50); /* grrr... */
975 				spin_lock_irq(&chip->reg_lock);
976 			}
977 		} else if (chip->device_type == DEVICE_INTEL_ICH4) {
978 			if (runtime->sample_bits > 16)
979 				cnt |= ICH_PCM_20BIT;
980 		}
981 		iputdword(chip, ICHREG(GLOB_CNT), cnt);
982 		break;
983 	}
984 	spin_unlock_irq(&chip->reg_lock);
985 }
986 
987 static int snd_intel8x0_pcm_prepare(struct snd_pcm_substream *substream)
988 {
989 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
990 	struct snd_pcm_runtime *runtime = substream->runtime;
991 	struct ichdev *ichdev = get_ichdev(substream);
992 
993 	ichdev->physbuf = runtime->dma_addr;
994 	ichdev->size = snd_pcm_lib_buffer_bytes(substream);
995 	ichdev->fragsize = snd_pcm_lib_period_bytes(substream);
996 	if (ichdev->ichd == ICHD_PCMOUT) {
997 		snd_intel8x0_setup_pcm_out(chip, runtime);
998 		if (chip->device_type == DEVICE_INTEL_ICH4)
999 			ichdev->pos_shift = (runtime->sample_bits > 16) ? 2 : 1;
1000 	}
1001 	snd_intel8x0_setup_periods(chip, ichdev);
1002 	return 0;
1003 }
1004 
1005 static snd_pcm_uframes_t snd_intel8x0_pcm_pointer(struct snd_pcm_substream *substream)
1006 {
1007 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1008 	struct ichdev *ichdev = get_ichdev(substream);
1009 	size_t ptr1, ptr;
1010 	int civ, timeout = 10;
1011 	unsigned int position;
1012 
1013 	spin_lock(&chip->reg_lock);
1014 	do {
1015 		civ = igetbyte(chip, ichdev->reg_offset + ICH_REG_OFF_CIV);
1016 		ptr1 = igetword(chip, ichdev->reg_offset + ichdev->roff_picb);
1017 		position = ichdev->position;
1018 		if (ptr1 == 0) {
1019 			udelay(10);
1020 			continue;
1021 		}
1022 		if (civ != igetbyte(chip, ichdev->reg_offset + ICH_REG_OFF_CIV))
1023 			continue;
1024 
1025 		/* IO read operation is very expensive inside virtual machine
1026 		 * as it is emulated. The probability that subsequent PICB read
1027 		 * will return different result is high enough to loop till
1028 		 * timeout here.
1029 		 * Same CIV is strict enough condition to be sure that PICB
1030 		 * is valid inside VM on emulated card. */
1031 		if (chip->inside_vm)
1032 			break;
1033 		if (ptr1 == igetword(chip, ichdev->reg_offset + ichdev->roff_picb))
1034 			break;
1035 	} while (timeout--);
1036 	ptr = ichdev->last_pos;
1037 	if (ptr1 != 0) {
1038 		ptr1 <<= ichdev->pos_shift;
1039 		ptr = ichdev->fragsize1 - ptr1;
1040 		ptr += position;
1041 		if (ptr < ichdev->last_pos) {
1042 			unsigned int pos_base, last_base;
1043 			pos_base = position / ichdev->fragsize1;
1044 			last_base = ichdev->last_pos / ichdev->fragsize1;
1045 			/* another sanity check; ptr1 can go back to full
1046 			 * before the base position is updated
1047 			 */
1048 			if (pos_base == last_base)
1049 				ptr = ichdev->last_pos;
1050 		}
1051 	}
1052 	ichdev->last_pos = ptr;
1053 	spin_unlock(&chip->reg_lock);
1054 	if (ptr >= ichdev->size)
1055 		return 0;
1056 	return bytes_to_frames(substream->runtime, ptr);
1057 }
1058 
1059 static const struct snd_pcm_hardware snd_intel8x0_stream =
1060 {
1061 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1062 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1063 				 SNDRV_PCM_INFO_MMAP_VALID |
1064 				 SNDRV_PCM_INFO_PAUSE |
1065 				 SNDRV_PCM_INFO_RESUME),
1066 	.formats =		SNDRV_PCM_FMTBIT_S16_LE,
1067 	.rates =		SNDRV_PCM_RATE_48000,
1068 	.rate_min =		48000,
1069 	.rate_max =		48000,
1070 	.channels_min =		2,
1071 	.channels_max =		2,
1072 	.buffer_bytes_max =	128 * 1024,
1073 	.period_bytes_min =	32,
1074 	.period_bytes_max =	128 * 1024,
1075 	.periods_min =		1,
1076 	.periods_max =		1024,
1077 	.fifo_size =		0,
1078 };
1079 
1080 static const unsigned int channels4[] = {
1081 	2, 4,
1082 };
1083 
1084 static const struct snd_pcm_hw_constraint_list hw_constraints_channels4 = {
1085 	.count = ARRAY_SIZE(channels4),
1086 	.list = channels4,
1087 	.mask = 0,
1088 };
1089 
1090 static const unsigned int channels6[] = {
1091 	2, 4, 6,
1092 };
1093 
1094 static const struct snd_pcm_hw_constraint_list hw_constraints_channels6 = {
1095 	.count = ARRAY_SIZE(channels6),
1096 	.list = channels6,
1097 	.mask = 0,
1098 };
1099 
1100 static const unsigned int channels8[] = {
1101 	2, 4, 6, 8,
1102 };
1103 
1104 static const struct snd_pcm_hw_constraint_list hw_constraints_channels8 = {
1105 	.count = ARRAY_SIZE(channels8),
1106 	.list = channels8,
1107 	.mask = 0,
1108 };
1109 
1110 static int snd_intel8x0_pcm_open(struct snd_pcm_substream *substream, struct ichdev *ichdev)
1111 {
1112 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1113 	struct snd_pcm_runtime *runtime = substream->runtime;
1114 	int err;
1115 
1116 	ichdev->substream = substream;
1117 	runtime->hw = snd_intel8x0_stream;
1118 	runtime->hw.rates = ichdev->pcm->rates;
1119 	snd_pcm_limit_hw_rates(runtime);
1120 	if (chip->device_type == DEVICE_SIS) {
1121 		runtime->hw.buffer_bytes_max = 64*1024;
1122 		runtime->hw.period_bytes_max = 64*1024;
1123 	}
1124 	if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1125 		return err;
1126 	runtime->private_data = ichdev;
1127 	return 0;
1128 }
1129 
1130 static int snd_intel8x0_playback_open(struct snd_pcm_substream *substream)
1131 {
1132 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1133 	struct snd_pcm_runtime *runtime = substream->runtime;
1134 	int err;
1135 
1136 	err = snd_intel8x0_pcm_open(substream, &chip->ichd[ICHD_PCMOUT]);
1137 	if (err < 0)
1138 		return err;
1139 
1140 	if (chip->multi8) {
1141 		runtime->hw.channels_max = 8;
1142 		snd_pcm_hw_constraint_list(runtime, 0,
1143 						SNDRV_PCM_HW_PARAM_CHANNELS,
1144 						&hw_constraints_channels8);
1145 	} else if (chip->multi6) {
1146 		runtime->hw.channels_max = 6;
1147 		snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
1148 					   &hw_constraints_channels6);
1149 	} else if (chip->multi4) {
1150 		runtime->hw.channels_max = 4;
1151 		snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
1152 					   &hw_constraints_channels4);
1153 	}
1154 	if (chip->dra) {
1155 		snd_ac97_pcm_double_rate_rules(runtime);
1156 	}
1157 	if (chip->smp20bit) {
1158 		runtime->hw.formats |= SNDRV_PCM_FMTBIT_S32_LE;
1159 		snd_pcm_hw_constraint_msbits(runtime, 0, 32, 20);
1160 	}
1161 	return 0;
1162 }
1163 
1164 static int snd_intel8x0_playback_close(struct snd_pcm_substream *substream)
1165 {
1166 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1167 
1168 	chip->ichd[ICHD_PCMOUT].substream = NULL;
1169 	return 0;
1170 }
1171 
1172 static int snd_intel8x0_capture_open(struct snd_pcm_substream *substream)
1173 {
1174 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1175 
1176 	return snd_intel8x0_pcm_open(substream, &chip->ichd[ICHD_PCMIN]);
1177 }
1178 
1179 static int snd_intel8x0_capture_close(struct snd_pcm_substream *substream)
1180 {
1181 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1182 
1183 	chip->ichd[ICHD_PCMIN].substream = NULL;
1184 	return 0;
1185 }
1186 
1187 static int snd_intel8x0_mic_open(struct snd_pcm_substream *substream)
1188 {
1189 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1190 
1191 	return snd_intel8x0_pcm_open(substream, &chip->ichd[ICHD_MIC]);
1192 }
1193 
1194 static int snd_intel8x0_mic_close(struct snd_pcm_substream *substream)
1195 {
1196 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1197 
1198 	chip->ichd[ICHD_MIC].substream = NULL;
1199 	return 0;
1200 }
1201 
1202 static int snd_intel8x0_mic2_open(struct snd_pcm_substream *substream)
1203 {
1204 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1205 
1206 	return snd_intel8x0_pcm_open(substream, &chip->ichd[ICHD_MIC2]);
1207 }
1208 
1209 static int snd_intel8x0_mic2_close(struct snd_pcm_substream *substream)
1210 {
1211 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1212 
1213 	chip->ichd[ICHD_MIC2].substream = NULL;
1214 	return 0;
1215 }
1216 
1217 static int snd_intel8x0_capture2_open(struct snd_pcm_substream *substream)
1218 {
1219 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1220 
1221 	return snd_intel8x0_pcm_open(substream, &chip->ichd[ICHD_PCM2IN]);
1222 }
1223 
1224 static int snd_intel8x0_capture2_close(struct snd_pcm_substream *substream)
1225 {
1226 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1227 
1228 	chip->ichd[ICHD_PCM2IN].substream = NULL;
1229 	return 0;
1230 }
1231 
1232 static int snd_intel8x0_spdif_open(struct snd_pcm_substream *substream)
1233 {
1234 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1235 	int idx = chip->device_type == DEVICE_NFORCE ? NVD_SPBAR : ICHD_SPBAR;
1236 
1237 	return snd_intel8x0_pcm_open(substream, &chip->ichd[idx]);
1238 }
1239 
1240 static int snd_intel8x0_spdif_close(struct snd_pcm_substream *substream)
1241 {
1242 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1243 	int idx = chip->device_type == DEVICE_NFORCE ? NVD_SPBAR : ICHD_SPBAR;
1244 
1245 	chip->ichd[idx].substream = NULL;
1246 	return 0;
1247 }
1248 
1249 static int snd_intel8x0_ali_ac97spdifout_open(struct snd_pcm_substream *substream)
1250 {
1251 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1252 	unsigned int val;
1253 
1254 	spin_lock_irq(&chip->reg_lock);
1255 	val = igetdword(chip, ICHREG(ALI_INTERFACECR));
1256 	val |= ICH_ALI_IF_AC97SP;
1257 	iputdword(chip, ICHREG(ALI_INTERFACECR), val);
1258 	/* also needs to set ALI_SC_CODEC_SPDF correctly */
1259 	spin_unlock_irq(&chip->reg_lock);
1260 
1261 	return snd_intel8x0_pcm_open(substream, &chip->ichd[ALID_AC97SPDIFOUT]);
1262 }
1263 
1264 static int snd_intel8x0_ali_ac97spdifout_close(struct snd_pcm_substream *substream)
1265 {
1266 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1267 	unsigned int val;
1268 
1269 	chip->ichd[ALID_AC97SPDIFOUT].substream = NULL;
1270 	spin_lock_irq(&chip->reg_lock);
1271 	val = igetdword(chip, ICHREG(ALI_INTERFACECR));
1272 	val &= ~ICH_ALI_IF_AC97SP;
1273 	iputdword(chip, ICHREG(ALI_INTERFACECR), val);
1274 	spin_unlock_irq(&chip->reg_lock);
1275 
1276 	return 0;
1277 }
1278 
1279 #if 0 // NYI
1280 static int snd_intel8x0_ali_spdifin_open(struct snd_pcm_substream *substream)
1281 {
1282 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1283 
1284 	return snd_intel8x0_pcm_open(substream, &chip->ichd[ALID_SPDIFIN]);
1285 }
1286 
1287 static int snd_intel8x0_ali_spdifin_close(struct snd_pcm_substream *substream)
1288 {
1289 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1290 
1291 	chip->ichd[ALID_SPDIFIN].substream = NULL;
1292 	return 0;
1293 }
1294 
1295 static int snd_intel8x0_ali_spdifout_open(struct snd_pcm_substream *substream)
1296 {
1297 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1298 
1299 	return snd_intel8x0_pcm_open(substream, &chip->ichd[ALID_SPDIFOUT]);
1300 }
1301 
1302 static int snd_intel8x0_ali_spdifout_close(struct snd_pcm_substream *substream)
1303 {
1304 	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
1305 
1306 	chip->ichd[ALID_SPDIFOUT].substream = NULL;
1307 	return 0;
1308 }
1309 #endif
1310 
1311 static const struct snd_pcm_ops snd_intel8x0_playback_ops = {
1312 	.open =		snd_intel8x0_playback_open,
1313 	.close =	snd_intel8x0_playback_close,
1314 	.hw_params =	snd_intel8x0_hw_params,
1315 	.hw_free =	snd_intel8x0_hw_free,
1316 	.prepare =	snd_intel8x0_pcm_prepare,
1317 	.trigger =	snd_intel8x0_pcm_trigger,
1318 	.pointer =	snd_intel8x0_pcm_pointer,
1319 };
1320 
1321 static const struct snd_pcm_ops snd_intel8x0_capture_ops = {
1322 	.open =		snd_intel8x0_capture_open,
1323 	.close =	snd_intel8x0_capture_close,
1324 	.hw_params =	snd_intel8x0_hw_params,
1325 	.hw_free =	snd_intel8x0_hw_free,
1326 	.prepare =	snd_intel8x0_pcm_prepare,
1327 	.trigger =	snd_intel8x0_pcm_trigger,
1328 	.pointer =	snd_intel8x0_pcm_pointer,
1329 };
1330 
1331 static const struct snd_pcm_ops snd_intel8x0_capture_mic_ops = {
1332 	.open =		snd_intel8x0_mic_open,
1333 	.close =	snd_intel8x0_mic_close,
1334 	.hw_params =	snd_intel8x0_hw_params,
1335 	.hw_free =	snd_intel8x0_hw_free,
1336 	.prepare =	snd_intel8x0_pcm_prepare,
1337 	.trigger =	snd_intel8x0_pcm_trigger,
1338 	.pointer =	snd_intel8x0_pcm_pointer,
1339 };
1340 
1341 static const struct snd_pcm_ops snd_intel8x0_capture_mic2_ops = {
1342 	.open =		snd_intel8x0_mic2_open,
1343 	.close =	snd_intel8x0_mic2_close,
1344 	.hw_params =	snd_intel8x0_hw_params,
1345 	.hw_free =	snd_intel8x0_hw_free,
1346 	.prepare =	snd_intel8x0_pcm_prepare,
1347 	.trigger =	snd_intel8x0_pcm_trigger,
1348 	.pointer =	snd_intel8x0_pcm_pointer,
1349 };
1350 
1351 static const struct snd_pcm_ops snd_intel8x0_capture2_ops = {
1352 	.open =		snd_intel8x0_capture2_open,
1353 	.close =	snd_intel8x0_capture2_close,
1354 	.hw_params =	snd_intel8x0_hw_params,
1355 	.hw_free =	snd_intel8x0_hw_free,
1356 	.prepare =	snd_intel8x0_pcm_prepare,
1357 	.trigger =	snd_intel8x0_pcm_trigger,
1358 	.pointer =	snd_intel8x0_pcm_pointer,
1359 };
1360 
1361 static const struct snd_pcm_ops snd_intel8x0_spdif_ops = {
1362 	.open =		snd_intel8x0_spdif_open,
1363 	.close =	snd_intel8x0_spdif_close,
1364 	.hw_params =	snd_intel8x0_hw_params,
1365 	.hw_free =	snd_intel8x0_hw_free,
1366 	.prepare =	snd_intel8x0_pcm_prepare,
1367 	.trigger =	snd_intel8x0_pcm_trigger,
1368 	.pointer =	snd_intel8x0_pcm_pointer,
1369 };
1370 
1371 static const struct snd_pcm_ops snd_intel8x0_ali_playback_ops = {
1372 	.open =		snd_intel8x0_playback_open,
1373 	.close =	snd_intel8x0_playback_close,
1374 	.hw_params =	snd_intel8x0_hw_params,
1375 	.hw_free =	snd_intel8x0_hw_free,
1376 	.prepare =	snd_intel8x0_pcm_prepare,
1377 	.trigger =	snd_intel8x0_ali_trigger,
1378 	.pointer =	snd_intel8x0_pcm_pointer,
1379 };
1380 
1381 static const struct snd_pcm_ops snd_intel8x0_ali_capture_ops = {
1382 	.open =		snd_intel8x0_capture_open,
1383 	.close =	snd_intel8x0_capture_close,
1384 	.hw_params =	snd_intel8x0_hw_params,
1385 	.hw_free =	snd_intel8x0_hw_free,
1386 	.prepare =	snd_intel8x0_pcm_prepare,
1387 	.trigger =	snd_intel8x0_ali_trigger,
1388 	.pointer =	snd_intel8x0_pcm_pointer,
1389 };
1390 
1391 static const struct snd_pcm_ops snd_intel8x0_ali_capture_mic_ops = {
1392 	.open =		snd_intel8x0_mic_open,
1393 	.close =	snd_intel8x0_mic_close,
1394 	.hw_params =	snd_intel8x0_hw_params,
1395 	.hw_free =	snd_intel8x0_hw_free,
1396 	.prepare =	snd_intel8x0_pcm_prepare,
1397 	.trigger =	snd_intel8x0_ali_trigger,
1398 	.pointer =	snd_intel8x0_pcm_pointer,
1399 };
1400 
1401 static const struct snd_pcm_ops snd_intel8x0_ali_ac97spdifout_ops = {
1402 	.open =		snd_intel8x0_ali_ac97spdifout_open,
1403 	.close =	snd_intel8x0_ali_ac97spdifout_close,
1404 	.hw_params =	snd_intel8x0_hw_params,
1405 	.hw_free =	snd_intel8x0_hw_free,
1406 	.prepare =	snd_intel8x0_pcm_prepare,
1407 	.trigger =	snd_intel8x0_ali_trigger,
1408 	.pointer =	snd_intel8x0_pcm_pointer,
1409 };
1410 
1411 #if 0 // NYI
1412 static struct snd_pcm_ops snd_intel8x0_ali_spdifin_ops = {
1413 	.open =		snd_intel8x0_ali_spdifin_open,
1414 	.close =	snd_intel8x0_ali_spdifin_close,
1415 	.hw_params =	snd_intel8x0_hw_params,
1416 	.hw_free =	snd_intel8x0_hw_free,
1417 	.prepare =	snd_intel8x0_pcm_prepare,
1418 	.trigger =	snd_intel8x0_pcm_trigger,
1419 	.pointer =	snd_intel8x0_pcm_pointer,
1420 };
1421 
1422 static struct snd_pcm_ops snd_intel8x0_ali_spdifout_ops = {
1423 	.open =		snd_intel8x0_ali_spdifout_open,
1424 	.close =	snd_intel8x0_ali_spdifout_close,
1425 	.hw_params =	snd_intel8x0_hw_params,
1426 	.hw_free =	snd_intel8x0_hw_free,
1427 	.prepare =	snd_intel8x0_pcm_prepare,
1428 	.trigger =	snd_intel8x0_pcm_trigger,
1429 	.pointer =	snd_intel8x0_pcm_pointer,
1430 };
1431 #endif // NYI
1432 
1433 struct ich_pcm_table {
1434 	char *suffix;
1435 	const struct snd_pcm_ops *playback_ops;
1436 	const struct snd_pcm_ops *capture_ops;
1437 	size_t prealloc_size;
1438 	size_t prealloc_max_size;
1439 	int ac97_idx;
1440 };
1441 
1442 #define intel8x0_dma_type(chip) \
1443 	((chip)->fix_nocache ? SNDRV_DMA_TYPE_DEV_UC : SNDRV_DMA_TYPE_DEV)
1444 
1445 static int snd_intel8x0_pcm1(struct intel8x0 *chip, int device,
1446 			     const struct ich_pcm_table *rec)
1447 {
1448 	struct snd_pcm *pcm;
1449 	int err;
1450 	char name[32];
1451 
1452 	if (rec->suffix)
1453 		sprintf(name, "Intel ICH - %s", rec->suffix);
1454 	else
1455 		strcpy(name, "Intel ICH");
1456 	err = snd_pcm_new(chip->card, name, device,
1457 			  rec->playback_ops ? 1 : 0,
1458 			  rec->capture_ops ? 1 : 0, &pcm);
1459 	if (err < 0)
1460 		return err;
1461 
1462 	if (rec->playback_ops)
1463 		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, rec->playback_ops);
1464 	if (rec->capture_ops)
1465 		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, rec->capture_ops);
1466 
1467 	pcm->private_data = chip;
1468 	pcm->info_flags = 0;
1469 	if (rec->suffix)
1470 		sprintf(pcm->name, "%s - %s", chip->card->shortname, rec->suffix);
1471 	else
1472 		strcpy(pcm->name, chip->card->shortname);
1473 	chip->pcm[device] = pcm;
1474 
1475 	snd_pcm_set_managed_buffer_all(pcm, intel8x0_dma_type(chip),
1476 				       &chip->pci->dev,
1477 				       rec->prealloc_size, rec->prealloc_max_size);
1478 
1479 	if (rec->playback_ops &&
1480 	    rec->playback_ops->open == snd_intel8x0_playback_open) {
1481 		struct snd_pcm_chmap *chmap;
1482 		int chs = 2;
1483 		if (chip->multi8)
1484 			chs = 8;
1485 		else if (chip->multi6)
1486 			chs = 6;
1487 		else if (chip->multi4)
1488 			chs = 4;
1489 		err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1490 					     snd_pcm_alt_chmaps, chs, 0,
1491 					     &chmap);
1492 		if (err < 0)
1493 			return err;
1494 		chmap->channel_mask = SND_PCM_CHMAP_MASK_2468;
1495 		chip->ac97[0]->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1496 	}
1497 
1498 	return 0;
1499 }
1500 
1501 static const struct ich_pcm_table intel_pcms[] = {
1502 	{
1503 		.playback_ops = &snd_intel8x0_playback_ops,
1504 		.capture_ops = &snd_intel8x0_capture_ops,
1505 		.prealloc_size = 64 * 1024,
1506 		.prealloc_max_size = 128 * 1024,
1507 	},
1508 	{
1509 		.suffix = "MIC ADC",
1510 		.capture_ops = &snd_intel8x0_capture_mic_ops,
1511 		.prealloc_size = 0,
1512 		.prealloc_max_size = 128 * 1024,
1513 		.ac97_idx = ICHD_MIC,
1514 	},
1515 	{
1516 		.suffix = "MIC2 ADC",
1517 		.capture_ops = &snd_intel8x0_capture_mic2_ops,
1518 		.prealloc_size = 0,
1519 		.prealloc_max_size = 128 * 1024,
1520 		.ac97_idx = ICHD_MIC2,
1521 	},
1522 	{
1523 		.suffix = "ADC2",
1524 		.capture_ops = &snd_intel8x0_capture2_ops,
1525 		.prealloc_size = 0,
1526 		.prealloc_max_size = 128 * 1024,
1527 		.ac97_idx = ICHD_PCM2IN,
1528 	},
1529 	{
1530 		.suffix = "IEC958",
1531 		.playback_ops = &snd_intel8x0_spdif_ops,
1532 		.prealloc_size = 64 * 1024,
1533 		.prealloc_max_size = 128 * 1024,
1534 		.ac97_idx = ICHD_SPBAR,
1535 	},
1536 };
1537 
1538 static const struct ich_pcm_table nforce_pcms[] = {
1539 	{
1540 		.playback_ops = &snd_intel8x0_playback_ops,
1541 		.capture_ops = &snd_intel8x0_capture_ops,
1542 		.prealloc_size = 64 * 1024,
1543 		.prealloc_max_size = 128 * 1024,
1544 	},
1545 	{
1546 		.suffix = "MIC ADC",
1547 		.capture_ops = &snd_intel8x0_capture_mic_ops,
1548 		.prealloc_size = 0,
1549 		.prealloc_max_size = 128 * 1024,
1550 		.ac97_idx = NVD_MIC,
1551 	},
1552 	{
1553 		.suffix = "IEC958",
1554 		.playback_ops = &snd_intel8x0_spdif_ops,
1555 		.prealloc_size = 64 * 1024,
1556 		.prealloc_max_size = 128 * 1024,
1557 		.ac97_idx = NVD_SPBAR,
1558 	},
1559 };
1560 
1561 static const struct ich_pcm_table ali_pcms[] = {
1562 	{
1563 		.playback_ops = &snd_intel8x0_ali_playback_ops,
1564 		.capture_ops = &snd_intel8x0_ali_capture_ops,
1565 		.prealloc_size = 64 * 1024,
1566 		.prealloc_max_size = 128 * 1024,
1567 	},
1568 	{
1569 		.suffix = "MIC ADC",
1570 		.capture_ops = &snd_intel8x0_ali_capture_mic_ops,
1571 		.prealloc_size = 0,
1572 		.prealloc_max_size = 128 * 1024,
1573 		.ac97_idx = ALID_MIC,
1574 	},
1575 	{
1576 		.suffix = "IEC958",
1577 		.playback_ops = &snd_intel8x0_ali_ac97spdifout_ops,
1578 		/* .capture_ops = &snd_intel8x0_ali_spdifin_ops, */
1579 		.prealloc_size = 64 * 1024,
1580 		.prealloc_max_size = 128 * 1024,
1581 		.ac97_idx = ALID_AC97SPDIFOUT,
1582 	},
1583 #if 0 // NYI
1584 	{
1585 		.suffix = "HW IEC958",
1586 		.playback_ops = &snd_intel8x0_ali_spdifout_ops,
1587 		.prealloc_size = 64 * 1024,
1588 		.prealloc_max_size = 128 * 1024,
1589 	},
1590 #endif
1591 };
1592 
1593 static int snd_intel8x0_pcm(struct intel8x0 *chip)
1594 {
1595 	int i, tblsize, device, err;
1596 	const struct ich_pcm_table *tbl, *rec;
1597 
1598 	switch (chip->device_type) {
1599 	case DEVICE_INTEL_ICH4:
1600 		tbl = intel_pcms;
1601 		tblsize = ARRAY_SIZE(intel_pcms);
1602 		if (spdif_aclink)
1603 			tblsize--;
1604 		break;
1605 	case DEVICE_NFORCE:
1606 		tbl = nforce_pcms;
1607 		tblsize = ARRAY_SIZE(nforce_pcms);
1608 		if (spdif_aclink)
1609 			tblsize--;
1610 		break;
1611 	case DEVICE_ALI:
1612 		tbl = ali_pcms;
1613 		tblsize = ARRAY_SIZE(ali_pcms);
1614 		break;
1615 	default:
1616 		tbl = intel_pcms;
1617 		tblsize = 2;
1618 		break;
1619 	}
1620 
1621 	device = 0;
1622 	for (i = 0; i < tblsize; i++) {
1623 		rec = tbl + i;
1624 		if (i > 0 && rec->ac97_idx) {
1625 			/* activate PCM only when associated AC'97 codec */
1626 			if (! chip->ichd[rec->ac97_idx].pcm)
1627 				continue;
1628 		}
1629 		err = snd_intel8x0_pcm1(chip, device, rec);
1630 		if (err < 0)
1631 			return err;
1632 		device++;
1633 	}
1634 
1635 	chip->pcm_devs = device;
1636 	return 0;
1637 }
1638 
1639 
1640 /*
1641  *  Mixer part
1642  */
1643 
1644 static void snd_intel8x0_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1645 {
1646 	struct intel8x0 *chip = bus->private_data;
1647 	chip->ac97_bus = NULL;
1648 }
1649 
1650 static void snd_intel8x0_mixer_free_ac97(struct snd_ac97 *ac97)
1651 {
1652 	struct intel8x0 *chip = ac97->private_data;
1653 	chip->ac97[ac97->num] = NULL;
1654 }
1655 
1656 static const struct ac97_pcm ac97_pcm_defs[] = {
1657 	/* front PCM */
1658 	{
1659 		.exclusive = 1,
1660 		.r = {	{
1661 				.slots = (1 << AC97_SLOT_PCM_LEFT) |
1662 					 (1 << AC97_SLOT_PCM_RIGHT) |
1663 					 (1 << AC97_SLOT_PCM_CENTER) |
1664 					 (1 << AC97_SLOT_PCM_SLEFT) |
1665 					 (1 << AC97_SLOT_PCM_SRIGHT) |
1666 					 (1 << AC97_SLOT_LFE)
1667 			},
1668 			{
1669 				.slots = (1 << AC97_SLOT_PCM_LEFT) |
1670 					 (1 << AC97_SLOT_PCM_RIGHT) |
1671 					 (1 << AC97_SLOT_PCM_LEFT_0) |
1672 					 (1 << AC97_SLOT_PCM_RIGHT_0)
1673 			}
1674 		}
1675 	},
1676 	/* PCM IN #1 */
1677 	{
1678 		.stream = 1,
1679 		.exclusive = 1,
1680 		.r = {	{
1681 				.slots = (1 << AC97_SLOT_PCM_LEFT) |
1682 					 (1 << AC97_SLOT_PCM_RIGHT)
1683 			}
1684 		}
1685 	},
1686 	/* MIC IN #1 */
1687 	{
1688 		.stream = 1,
1689 		.exclusive = 1,
1690 		.r = {	{
1691 				.slots = (1 << AC97_SLOT_MIC)
1692 			}
1693 		}
1694 	},
1695 	/* S/PDIF PCM */
1696 	{
1697 		.exclusive = 1,
1698 		.spdif = 1,
1699 		.r = {	{
1700 				.slots = (1 << AC97_SLOT_SPDIF_LEFT2) |
1701 					 (1 << AC97_SLOT_SPDIF_RIGHT2)
1702 			}
1703 		}
1704 	},
1705 	/* PCM IN #2 */
1706 	{
1707 		.stream = 1,
1708 		.exclusive = 1,
1709 		.r = {	{
1710 				.slots = (1 << AC97_SLOT_PCM_LEFT) |
1711 					 (1 << AC97_SLOT_PCM_RIGHT)
1712 			}
1713 		}
1714 	},
1715 	/* MIC IN #2 */
1716 	{
1717 		.stream = 1,
1718 		.exclusive = 1,
1719 		.r = {	{
1720 				.slots = (1 << AC97_SLOT_MIC)
1721 			}
1722 		}
1723 	},
1724 };
1725 
1726 static const struct ac97_quirk ac97_quirks[] = {
1727         {
1728 		.subvendor = 0x0e11,
1729 		.subdevice = 0x000e,
1730 		.name = "Compaq Deskpro EN",	/* AD1885 */
1731 		.type = AC97_TUNE_HP_ONLY
1732         },
1733 	{
1734 		.subvendor = 0x0e11,
1735 		.subdevice = 0x008a,
1736 		.name = "Compaq Evo W4000",	/* AD1885 */
1737 		.type = AC97_TUNE_HP_ONLY
1738 	},
1739 	{
1740 		.subvendor = 0x0e11,
1741 		.subdevice = 0x00b8,
1742 		.name = "Compaq Evo D510C",
1743 		.type = AC97_TUNE_HP_ONLY
1744 	},
1745         {
1746 		.subvendor = 0x0e11,
1747 		.subdevice = 0x0860,
1748 		.name = "HP/Compaq nx7010",
1749 		.type = AC97_TUNE_MUTE_LED
1750         },
1751 	{
1752 		.subvendor = 0x1014,
1753 		.subdevice = 0x0534,
1754 		.name = "ThinkPad X31",
1755 		.type = AC97_TUNE_INV_EAPD
1756 	},
1757 	{
1758 		.subvendor = 0x1014,
1759 		.subdevice = 0x1f00,
1760 		.name = "MS-9128",
1761 		.type = AC97_TUNE_ALC_JACK
1762 	},
1763 	{
1764 		.subvendor = 0x1014,
1765 		.subdevice = 0x0267,
1766 		.name = "IBM NetVista A30p",	/* AD1981B */
1767 		.type = AC97_TUNE_HP_ONLY
1768 	},
1769 	{
1770 		.subvendor = 0x1025,
1771 		.subdevice = 0x0082,
1772 		.name = "Acer Travelmate 2310",
1773 		.type = AC97_TUNE_HP_ONLY
1774 	},
1775 	{
1776 		.subvendor = 0x1025,
1777 		.subdevice = 0x0083,
1778 		.name = "Acer Aspire 3003LCi",
1779 		.type = AC97_TUNE_HP_ONLY
1780 	},
1781 	{
1782 		.subvendor = 0x1028,
1783 		.subdevice = 0x00d8,
1784 		.name = "Dell Precision 530",	/* AD1885 */
1785 		.type = AC97_TUNE_HP_ONLY
1786 	},
1787 	{
1788 		.subvendor = 0x1028,
1789 		.subdevice = 0x010d,
1790 		.name = "Dell",	/* which model?  AD1885 */
1791 		.type = AC97_TUNE_HP_ONLY
1792 	},
1793 	{
1794 		.subvendor = 0x1028,
1795 		.subdevice = 0x0126,
1796 		.name = "Dell Optiplex GX260",	/* AD1981A */
1797 		.type = AC97_TUNE_HP_ONLY
1798 	},
1799 	{
1800 		.subvendor = 0x1028,
1801 		.subdevice = 0x012c,
1802 		.name = "Dell Precision 650",	/* AD1981A */
1803 		.type = AC97_TUNE_HP_ONLY
1804 	},
1805 	{
1806 		.subvendor = 0x1028,
1807 		.subdevice = 0x012d,
1808 		.name = "Dell Precision 450",	/* AD1981B*/
1809 		.type = AC97_TUNE_HP_ONLY
1810 	},
1811 	{
1812 		.subvendor = 0x1028,
1813 		.subdevice = 0x0147,
1814 		.name = "Dell",	/* which model?  AD1981B*/
1815 		.type = AC97_TUNE_HP_ONLY
1816 	},
1817 	{
1818 		.subvendor = 0x1028,
1819 		.subdevice = 0x0151,
1820 		.name = "Dell Optiplex GX270",  /* AD1981B */
1821 		.type = AC97_TUNE_HP_ONLY
1822 	},
1823 	{
1824 		.subvendor = 0x1028,
1825 		.subdevice = 0x014e,
1826 		.name = "Dell D800", /* STAC9750/51 */
1827 		.type = AC97_TUNE_HP_ONLY
1828 	},
1829 	{
1830 		.subvendor = 0x1028,
1831 		.subdevice = 0x0163,
1832 		.name = "Dell Unknown",	/* STAC9750/51 */
1833 		.type = AC97_TUNE_HP_ONLY
1834 	},
1835 	{
1836 		.subvendor = 0x1028,
1837 		.subdevice = 0x016a,
1838 		.name = "Dell Inspiron 8600",	/* STAC9750/51 */
1839 		.type = AC97_TUNE_HP_ONLY
1840 	},
1841 	{
1842 		.subvendor = 0x1028,
1843 		.subdevice = 0x0182,
1844 		.name = "Dell Latitude D610",	/* STAC9750/51 */
1845 		.type = AC97_TUNE_HP_ONLY
1846 	},
1847 	{
1848 		.subvendor = 0x1028,
1849 		.subdevice = 0x0186,
1850 		.name = "Dell Latitude D810", /* cf. Malone #41015 */
1851 		.type = AC97_TUNE_HP_MUTE_LED
1852 	},
1853 	{
1854 		.subvendor = 0x1028,
1855 		.subdevice = 0x0188,
1856 		.name = "Dell Inspiron 6000",
1857 		.type = AC97_TUNE_HP_MUTE_LED /* cf. Malone #41015 */
1858 	},
1859 	{
1860 		.subvendor = 0x1028,
1861 		.subdevice = 0x0189,
1862 		.name = "Dell Inspiron 9300",
1863 		.type = AC97_TUNE_HP_MUTE_LED
1864 	},
1865 	{
1866 		.subvendor = 0x1028,
1867 		.subdevice = 0x0191,
1868 		.name = "Dell Inspiron 8600",
1869 		.type = AC97_TUNE_HP_ONLY
1870 	},
1871 	{
1872 		.subvendor = 0x103c,
1873 		.subdevice = 0x006d,
1874 		.name = "HP zv5000",
1875 		.type = AC97_TUNE_MUTE_LED	/*AD1981B*/
1876 	},
1877 	{	/* FIXME: which codec? */
1878 		.subvendor = 0x103c,
1879 		.subdevice = 0x00c3,
1880 		.name = "HP xw6000",
1881 		.type = AC97_TUNE_HP_ONLY
1882 	},
1883 	{
1884 		.subvendor = 0x103c,
1885 		.subdevice = 0x088c,
1886 		.name = "HP nc8000",
1887 		.type = AC97_TUNE_HP_MUTE_LED
1888 	},
1889 	{
1890 		.subvendor = 0x103c,
1891 		.subdevice = 0x0890,
1892 		.name = "HP nc6000",
1893 		.type = AC97_TUNE_MUTE_LED
1894 	},
1895 	{
1896 		.subvendor = 0x103c,
1897 		.subdevice = 0x129d,
1898 		.name = "HP xw8000",
1899 		.type = AC97_TUNE_HP_ONLY
1900 	},
1901 	{
1902 		.subvendor = 0x103c,
1903 		.subdevice = 0x0938,
1904 		.name = "HP nc4200",
1905 		.type = AC97_TUNE_HP_MUTE_LED
1906 	},
1907 	{
1908 		.subvendor = 0x103c,
1909 		.subdevice = 0x099c,
1910 		.name = "HP nx6110/nc6120",
1911 		.type = AC97_TUNE_HP_MUTE_LED
1912 	},
1913 	{
1914 		.subvendor = 0x103c,
1915 		.subdevice = 0x0944,
1916 		.name = "HP nc6220",
1917 		.type = AC97_TUNE_HP_MUTE_LED
1918 	},
1919 	{
1920 		.subvendor = 0x103c,
1921 		.subdevice = 0x0934,
1922 		.name = "HP nc8220",
1923 		.type = AC97_TUNE_HP_MUTE_LED
1924 	},
1925 	{
1926 		.subvendor = 0x103c,
1927 		.subdevice = 0x12f1,
1928 		.name = "HP xw8200",	/* AD1981B*/
1929 		.type = AC97_TUNE_HP_ONLY
1930 	},
1931 	{
1932 		.subvendor = 0x103c,
1933 		.subdevice = 0x12f2,
1934 		.name = "HP xw6200",
1935 		.type = AC97_TUNE_HP_ONLY
1936 	},
1937 	{
1938 		.subvendor = 0x103c,
1939 		.subdevice = 0x3008,
1940 		.name = "HP xw4200",	/* AD1981B*/
1941 		.type = AC97_TUNE_HP_ONLY
1942 	},
1943 	{
1944 		.subvendor = 0x104d,
1945 		.subdevice = 0x8144,
1946 		.name = "Sony",
1947 		.type = AC97_TUNE_INV_EAPD
1948 	},
1949 	{
1950 		.subvendor = 0x104d,
1951 		.subdevice = 0x8197,
1952 		.name = "Sony S1XP",
1953 		.type = AC97_TUNE_INV_EAPD
1954 	},
1955 	{
1956 		.subvendor = 0x104d,
1957 		.subdevice = 0x81c0,
1958 		.name = "Sony VAIO VGN-T350P", /*AD1981B*/
1959 		.type = AC97_TUNE_INV_EAPD
1960 	},
1961 	{
1962 		.subvendor = 0x104d,
1963 		.subdevice = 0x81c5,
1964 		.name = "Sony VAIO VGN-B1VP", /*AD1981B*/
1965 		.type = AC97_TUNE_INV_EAPD
1966 	},
1967  	{
1968 		.subvendor = 0x1043,
1969 		.subdevice = 0x80f3,
1970 		.name = "ASUS ICH5/AD1985",
1971 		.type = AC97_TUNE_AD_SHARING
1972 	},
1973 	{
1974 		.subvendor = 0x10cf,
1975 		.subdevice = 0x11c3,
1976 		.name = "Fujitsu-Siemens E4010",
1977 		.type = AC97_TUNE_HP_ONLY
1978 	},
1979 	{
1980 		.subvendor = 0x10cf,
1981 		.subdevice = 0x1225,
1982 		.name = "Fujitsu-Siemens T3010",
1983 		.type = AC97_TUNE_HP_ONLY
1984 	},
1985 	{
1986 		.subvendor = 0x10cf,
1987 		.subdevice = 0x1253,
1988 		.name = "Fujitsu S6210",	/* STAC9750/51 */
1989 		.type = AC97_TUNE_HP_ONLY
1990 	},
1991 	{
1992 		.subvendor = 0x10cf,
1993 		.subdevice = 0x127d,
1994 		.name = "Fujitsu Lifebook P7010",
1995 		.type = AC97_TUNE_HP_ONLY
1996 	},
1997 	{
1998 		.subvendor = 0x10cf,
1999 		.subdevice = 0x127e,
2000 		.name = "Fujitsu Lifebook C1211D",
2001 		.type = AC97_TUNE_HP_ONLY
2002 	},
2003 	{
2004 		.subvendor = 0x10cf,
2005 		.subdevice = 0x12ec,
2006 		.name = "Fujitsu-Siemens 4010",
2007 		.type = AC97_TUNE_HP_ONLY
2008 	},
2009 	{
2010 		.subvendor = 0x10cf,
2011 		.subdevice = 0x12f2,
2012 		.name = "Fujitsu-Siemens Celsius H320",
2013 		.type = AC97_TUNE_SWAP_HP
2014 	},
2015 	{
2016 		.subvendor = 0x10f1,
2017 		.subdevice = 0x2665,
2018 		.name = "Fujitsu-Siemens Celsius",	/* AD1981? */
2019 		.type = AC97_TUNE_HP_ONLY
2020 	},
2021 	{
2022 		.subvendor = 0x10f1,
2023 		.subdevice = 0x2885,
2024 		.name = "AMD64 Mobo",	/* ALC650 */
2025 		.type = AC97_TUNE_HP_ONLY
2026 	},
2027 	{
2028 		.subvendor = 0x10f1,
2029 		.subdevice = 0x2895,
2030 		.name = "Tyan Thunder K8WE",
2031 		.type = AC97_TUNE_HP_ONLY
2032 	},
2033 	{
2034 		.subvendor = 0x10f7,
2035 		.subdevice = 0x834c,
2036 		.name = "Panasonic CF-R4",
2037 		.type = AC97_TUNE_HP_ONLY,
2038 	},
2039 	{
2040 		.subvendor = 0x110a,
2041 		.subdevice = 0x0056,
2042 		.name = "Fujitsu-Siemens Scenic",	/* AD1981? */
2043 		.type = AC97_TUNE_HP_ONLY
2044 	},
2045 	{
2046 		.subvendor = 0x11d4,
2047 		.subdevice = 0x5375,
2048 		.name = "ADI AD1985 (discrete)",
2049 		.type = AC97_TUNE_HP_ONLY
2050 	},
2051 	{
2052 		.subvendor = 0x1462,
2053 		.subdevice = 0x5470,
2054 		.name = "MSI P4 ATX 645 Ultra",
2055 		.type = AC97_TUNE_HP_ONLY
2056 	},
2057 	{
2058 		.subvendor = 0x161f,
2059 		.subdevice = 0x202f,
2060 		.name = "Gateway M520",
2061 		.type = AC97_TUNE_INV_EAPD
2062 	},
2063 	{
2064 		.subvendor = 0x161f,
2065 		.subdevice = 0x203a,
2066 		.name = "Gateway 4525GZ",		/* AD1981B */
2067 		.type = AC97_TUNE_INV_EAPD
2068 	},
2069 	{
2070 		.subvendor = 0x1734,
2071 		.subdevice = 0x0088,
2072 		.name = "Fujitsu-Siemens D1522",	/* AD1981 */
2073 		.type = AC97_TUNE_HP_ONLY
2074 	},
2075 	{
2076 		.subvendor = 0x8086,
2077 		.subdevice = 0x2000,
2078 		.mask = 0xfff0,
2079 		.name = "Intel ICH5/AD1985",
2080 		.type = AC97_TUNE_AD_SHARING
2081 	},
2082 	{
2083 		.subvendor = 0x8086,
2084 		.subdevice = 0x4000,
2085 		.mask = 0xfff0,
2086 		.name = "Intel ICH5/AD1985",
2087 		.type = AC97_TUNE_AD_SHARING
2088 	},
2089 	{
2090 		.subvendor = 0x8086,
2091 		.subdevice = 0x4856,
2092 		.name = "Intel D845WN (82801BA)",
2093 		.type = AC97_TUNE_SWAP_HP
2094 	},
2095 	{
2096 		.subvendor = 0x8086,
2097 		.subdevice = 0x4d44,
2098 		.name = "Intel D850EMV2",	/* AD1885 */
2099 		.type = AC97_TUNE_HP_ONLY
2100 	},
2101 	{
2102 		.subvendor = 0x8086,
2103 		.subdevice = 0x4d56,
2104 		.name = "Intel ICH/AD1885",
2105 		.type = AC97_TUNE_HP_ONLY
2106 	},
2107 	{
2108 		.subvendor = 0x8086,
2109 		.subdevice = 0x6000,
2110 		.mask = 0xfff0,
2111 		.name = "Intel ICH5/AD1985",
2112 		.type = AC97_TUNE_AD_SHARING
2113 	},
2114 	{
2115 		.subvendor = 0x8086,
2116 		.subdevice = 0xe000,
2117 		.mask = 0xfff0,
2118 		.name = "Intel ICH5/AD1985",
2119 		.type = AC97_TUNE_AD_SHARING
2120 	},
2121 #if 0 /* FIXME: this seems wrong on most boards */
2122 	{
2123 		.subvendor = 0x8086,
2124 		.subdevice = 0xa000,
2125 		.mask = 0xfff0,
2126 		.name = "Intel ICH5/AD1985",
2127 		.type = AC97_TUNE_HP_ONLY
2128 	},
2129 #endif
2130 	{ } /* terminator */
2131 };
2132 
2133 static int snd_intel8x0_mixer(struct intel8x0 *chip, int ac97_clock,
2134 			      const char *quirk_override)
2135 {
2136 	struct snd_ac97_bus *pbus;
2137 	struct snd_ac97_template ac97;
2138 	int err;
2139 	unsigned int i, codecs;
2140 	unsigned int glob_sta = 0;
2141 	const struct snd_ac97_bus_ops *ops;
2142 	static const struct snd_ac97_bus_ops standard_bus_ops = {
2143 		.write = snd_intel8x0_codec_write,
2144 		.read = snd_intel8x0_codec_read,
2145 	};
2146 	static const struct snd_ac97_bus_ops ali_bus_ops = {
2147 		.write = snd_intel8x0_ali_codec_write,
2148 		.read = snd_intel8x0_ali_codec_read,
2149 	};
2150 
2151 	chip->spdif_idx = -1; /* use PCMOUT (or disabled) */
2152 	if (!spdif_aclink) {
2153 		switch (chip->device_type) {
2154 		case DEVICE_NFORCE:
2155 			chip->spdif_idx = NVD_SPBAR;
2156 			break;
2157 		case DEVICE_ALI:
2158 			chip->spdif_idx = ALID_AC97SPDIFOUT;
2159 			break;
2160 		case DEVICE_INTEL_ICH4:
2161 			chip->spdif_idx = ICHD_SPBAR;
2162 			break;
2163 		}
2164 	}
2165 
2166 	chip->in_ac97_init = 1;
2167 
2168 	memset(&ac97, 0, sizeof(ac97));
2169 	ac97.private_data = chip;
2170 	ac97.private_free = snd_intel8x0_mixer_free_ac97;
2171 	ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
2172 	if (chip->xbox)
2173 		ac97.scaps |= AC97_SCAP_DETECT_BY_VENDOR;
2174 	if (chip->device_type != DEVICE_ALI) {
2175 		glob_sta = igetdword(chip, ICHREG(GLOB_STA));
2176 		ops = &standard_bus_ops;
2177 		chip->in_sdin_init = 1;
2178 		codecs = 0;
2179 		for (i = 0; i < chip->max_codecs; i++) {
2180 			if (! (glob_sta & chip->codec_bit[i]))
2181 				continue;
2182 			if (chip->device_type == DEVICE_INTEL_ICH4) {
2183 				snd_intel8x0_codec_read_test(chip, codecs);
2184 				chip->ac97_sdin[codecs] =
2185 					igetbyte(chip, ICHREG(SDM)) & ICH_LDI_MASK;
2186 				if (snd_BUG_ON(chip->ac97_sdin[codecs] >= 3))
2187 					chip->ac97_sdin[codecs] = 0;
2188 			} else
2189 				chip->ac97_sdin[codecs] = i;
2190 			codecs++;
2191 		}
2192 		chip->in_sdin_init = 0;
2193 		if (! codecs)
2194 			codecs = 1;
2195 	} else {
2196 		ops = &ali_bus_ops;
2197 		codecs = 1;
2198 		/* detect the secondary codec */
2199 		for (i = 0; i < 100; i++) {
2200 			unsigned int reg = igetdword(chip, ICHREG(ALI_RTSR));
2201 			if (reg & 0x40) {
2202 				codecs = 2;
2203 				break;
2204 			}
2205 			iputdword(chip, ICHREG(ALI_RTSR), reg | 0x40);
2206 			udelay(1);
2207 		}
2208 	}
2209 	if ((err = snd_ac97_bus(chip->card, 0, ops, chip, &pbus)) < 0)
2210 		goto __err;
2211 	pbus->private_free = snd_intel8x0_mixer_free_ac97_bus;
2212 	if (ac97_clock >= 8000 && ac97_clock <= 48000)
2213 		pbus->clock = ac97_clock;
2214 	/* FIXME: my test board doesn't work well with VRA... */
2215 	if (chip->device_type == DEVICE_ALI)
2216 		pbus->no_vra = 1;
2217 	else
2218 		pbus->dra = 1;
2219 	chip->ac97_bus = pbus;
2220 	chip->ncodecs = codecs;
2221 
2222 	ac97.pci = chip->pci;
2223 	for (i = 0; i < codecs; i++) {
2224 		ac97.num = i;
2225 		if ((err = snd_ac97_mixer(pbus, &ac97, &chip->ac97[i])) < 0) {
2226 			if (err != -EACCES)
2227 				dev_err(chip->card->dev,
2228 					"Unable to initialize codec #%d\n", i);
2229 			if (i == 0)
2230 				goto __err;
2231 		}
2232 	}
2233 	/* tune up the primary codec */
2234 	snd_ac97_tune_hardware(chip->ac97[0], ac97_quirks, quirk_override);
2235 	/* enable separate SDINs for ICH4 */
2236 	if (chip->device_type == DEVICE_INTEL_ICH4)
2237 		pbus->isdin = 1;
2238 	/* find the available PCM streams */
2239 	i = ARRAY_SIZE(ac97_pcm_defs);
2240 	if (chip->device_type != DEVICE_INTEL_ICH4)
2241 		i -= 2;		/* do not allocate PCM2IN and MIC2 */
2242 	if (chip->spdif_idx < 0)
2243 		i--;		/* do not allocate S/PDIF */
2244 	err = snd_ac97_pcm_assign(pbus, i, ac97_pcm_defs);
2245 	if (err < 0)
2246 		goto __err;
2247 	chip->ichd[ICHD_PCMOUT].pcm = &pbus->pcms[0];
2248 	chip->ichd[ICHD_PCMIN].pcm = &pbus->pcms[1];
2249 	chip->ichd[ICHD_MIC].pcm = &pbus->pcms[2];
2250 	if (chip->spdif_idx >= 0)
2251 		chip->ichd[chip->spdif_idx].pcm = &pbus->pcms[3];
2252 	if (chip->device_type == DEVICE_INTEL_ICH4) {
2253 		chip->ichd[ICHD_PCM2IN].pcm = &pbus->pcms[4];
2254 		chip->ichd[ICHD_MIC2].pcm = &pbus->pcms[5];
2255 	}
2256 	/* enable separate SDINs for ICH4 */
2257 	if (chip->device_type == DEVICE_INTEL_ICH4) {
2258 		struct ac97_pcm *pcm = chip->ichd[ICHD_PCM2IN].pcm;
2259 		u8 tmp = igetbyte(chip, ICHREG(SDM));
2260 		tmp &= ~(ICH_DI2L_MASK|ICH_DI1L_MASK);
2261 		if (pcm) {
2262 			tmp |= ICH_SE;	/* steer enable for multiple SDINs */
2263 			tmp |= chip->ac97_sdin[0] << ICH_DI1L_SHIFT;
2264 			for (i = 1; i < 4; i++) {
2265 				if (pcm->r[0].codec[i]) {
2266 					tmp |= chip->ac97_sdin[pcm->r[0].codec[1]->num] << ICH_DI2L_SHIFT;
2267 					break;
2268 				}
2269 			}
2270 		} else {
2271 			tmp &= ~ICH_SE; /* steer disable */
2272 		}
2273 		iputbyte(chip, ICHREG(SDM), tmp);
2274 	}
2275 	if (pbus->pcms[0].r[0].slots & (1 << AC97_SLOT_PCM_SLEFT)) {
2276 		chip->multi4 = 1;
2277 		if (pbus->pcms[0].r[0].slots & (1 << AC97_SLOT_LFE)) {
2278 			chip->multi6 = 1;
2279 			if (chip->ac97[0]->flags & AC97_HAS_8CH)
2280 				chip->multi8 = 1;
2281 		}
2282 	}
2283 	if (pbus->pcms[0].r[1].rslots[0]) {
2284 		chip->dra = 1;
2285 	}
2286 	if (chip->device_type == DEVICE_INTEL_ICH4) {
2287 		if ((igetdword(chip, ICHREG(GLOB_STA)) & ICH_SAMPLE_CAP) == ICH_SAMPLE_16_20)
2288 			chip->smp20bit = 1;
2289 	}
2290 	if (chip->device_type == DEVICE_NFORCE && !spdif_aclink) {
2291 		/* 48kHz only */
2292 		chip->ichd[chip->spdif_idx].pcm->rates = SNDRV_PCM_RATE_48000;
2293 	}
2294 	if (chip->device_type == DEVICE_INTEL_ICH4 && !spdif_aclink) {
2295 		/* use slot 10/11 for SPDIF */
2296 		u32 val;
2297 		val = igetdword(chip, ICHREG(GLOB_CNT)) & ~ICH_PCM_SPDIF_MASK;
2298 		val |= ICH_PCM_SPDIF_1011;
2299 		iputdword(chip, ICHREG(GLOB_CNT), val);
2300 		snd_ac97_update_bits(chip->ac97[0], AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
2301 	}
2302 	chip->in_ac97_init = 0;
2303 	return 0;
2304 
2305  __err:
2306 	/* clear the cold-reset bit for the next chance */
2307 	if (chip->device_type != DEVICE_ALI)
2308 		iputdword(chip, ICHREG(GLOB_CNT),
2309 			  igetdword(chip, ICHREG(GLOB_CNT)) & ~ICH_AC97COLD);
2310 	return err;
2311 }
2312 
2313 
2314 /*
2315  *
2316  */
2317 
2318 static void do_ali_reset(struct intel8x0 *chip)
2319 {
2320 	iputdword(chip, ICHREG(ALI_SCR), ICH_ALI_SC_RESET);
2321 	iputdword(chip, ICHREG(ALI_FIFOCR1), 0x83838383);
2322 	iputdword(chip, ICHREG(ALI_FIFOCR2), 0x83838383);
2323 	iputdword(chip, ICHREG(ALI_FIFOCR3), 0x83838383);
2324 	iputdword(chip, ICHREG(ALI_INTERFACECR),
2325 		  ICH_ALI_IF_PI|ICH_ALI_IF_PO);
2326 	iputdword(chip, ICHREG(ALI_INTERRUPTCR), 0x00000000);
2327 	iputdword(chip, ICHREG(ALI_INTERRUPTSR), 0x00000000);
2328 }
2329 
2330 #ifdef CONFIG_SND_AC97_POWER_SAVE
2331 static const struct snd_pci_quirk ich_chip_reset_mode[] = {
2332 	SND_PCI_QUIRK(0x1014, 0x051f, "Thinkpad R32", 1),
2333 	{ } /* end */
2334 };
2335 
2336 static int snd_intel8x0_ich_chip_cold_reset(struct intel8x0 *chip)
2337 {
2338 	unsigned int cnt;
2339 	/* ACLink on, 2 channels */
2340 
2341 	if (snd_pci_quirk_lookup(chip->pci, ich_chip_reset_mode))
2342 		return -EIO;
2343 
2344 	cnt = igetdword(chip, ICHREG(GLOB_CNT));
2345 	cnt &= ~(ICH_ACLINK | ICH_PCM_246_MASK);
2346 
2347 	/* do cold reset - the full ac97 powerdown may leave the controller
2348 	 * in a warm state but actually it cannot communicate with the codec.
2349 	 */
2350 	iputdword(chip, ICHREG(GLOB_CNT), cnt & ~ICH_AC97COLD);
2351 	cnt = igetdword(chip, ICHREG(GLOB_CNT));
2352 	udelay(10);
2353 	iputdword(chip, ICHREG(GLOB_CNT), cnt | ICH_AC97COLD);
2354 	msleep(1);
2355 	return 0;
2356 }
2357 #define snd_intel8x0_ich_chip_can_cold_reset(chip) \
2358 	(!snd_pci_quirk_lookup(chip->pci, ich_chip_reset_mode))
2359 #else
2360 #define snd_intel8x0_ich_chip_cold_reset(chip)	0
2361 #define snd_intel8x0_ich_chip_can_cold_reset(chip) (0)
2362 #endif
2363 
2364 static int snd_intel8x0_ich_chip_reset(struct intel8x0 *chip)
2365 {
2366 	unsigned long end_time;
2367 	unsigned int cnt;
2368 	/* ACLink on, 2 channels */
2369 	cnt = igetdword(chip, ICHREG(GLOB_CNT));
2370 	cnt &= ~(ICH_ACLINK | ICH_PCM_246_MASK);
2371 	/* finish cold or do warm reset */
2372 	cnt |= (cnt & ICH_AC97COLD) == 0 ? ICH_AC97COLD : ICH_AC97WARM;
2373 	iputdword(chip, ICHREG(GLOB_CNT), cnt);
2374 	end_time = (jiffies + (HZ / 4)) + 1;
2375 	do {
2376 		if ((igetdword(chip, ICHREG(GLOB_CNT)) & ICH_AC97WARM) == 0)
2377 			return 0;
2378 		schedule_timeout_uninterruptible(1);
2379 	} while (time_after_eq(end_time, jiffies));
2380 	dev_err(chip->card->dev, "AC'97 warm reset still in progress? [0x%x]\n",
2381 		   igetdword(chip, ICHREG(GLOB_CNT)));
2382 	return -EIO;
2383 }
2384 
2385 static int snd_intel8x0_ich_chip_init(struct intel8x0 *chip, int probing)
2386 {
2387 	unsigned long end_time;
2388 	unsigned int status, nstatus;
2389 	unsigned int cnt;
2390 	int err;
2391 
2392 	/* put logic to right state */
2393 	/* first clear status bits */
2394 	status = ICH_RCS | ICH_MCINT | ICH_POINT | ICH_PIINT;
2395 	if (chip->device_type == DEVICE_NFORCE)
2396 		status |= ICH_NVSPINT;
2397 	cnt = igetdword(chip, ICHREG(GLOB_STA));
2398 	iputdword(chip, ICHREG(GLOB_STA), cnt & status);
2399 
2400 	if (snd_intel8x0_ich_chip_can_cold_reset(chip))
2401 		err = snd_intel8x0_ich_chip_cold_reset(chip);
2402 	else
2403 		err = snd_intel8x0_ich_chip_reset(chip);
2404 	if (err < 0)
2405 		return err;
2406 
2407 	if (probing) {
2408 		/* wait for any codec ready status.
2409 		 * Once it becomes ready it should remain ready
2410 		 * as long as we do not disable the ac97 link.
2411 		 */
2412 		end_time = jiffies + HZ;
2413 		do {
2414 			status = igetdword(chip, ICHREG(GLOB_STA)) &
2415 				chip->codec_isr_bits;
2416 			if (status)
2417 				break;
2418 			schedule_timeout_uninterruptible(1);
2419 		} while (time_after_eq(end_time, jiffies));
2420 		if (! status) {
2421 			/* no codec is found */
2422 			dev_err(chip->card->dev,
2423 				"codec_ready: codec is not ready [0x%x]\n",
2424 				   igetdword(chip, ICHREG(GLOB_STA)));
2425 			return -EIO;
2426 		}
2427 
2428 		/* wait for other codecs ready status. */
2429 		end_time = jiffies + HZ / 4;
2430 		while (status != chip->codec_isr_bits &&
2431 		       time_after_eq(end_time, jiffies)) {
2432 			schedule_timeout_uninterruptible(1);
2433 			status |= igetdword(chip, ICHREG(GLOB_STA)) &
2434 				chip->codec_isr_bits;
2435 		}
2436 
2437 	} else {
2438 		/* resume phase */
2439 		int i;
2440 		status = 0;
2441 		for (i = 0; i < chip->ncodecs; i++)
2442 			if (chip->ac97[i])
2443 				status |= chip->codec_bit[chip->ac97_sdin[i]];
2444 		/* wait until all the probed codecs are ready */
2445 		end_time = jiffies + HZ;
2446 		do {
2447 			nstatus = igetdword(chip, ICHREG(GLOB_STA)) &
2448 				chip->codec_isr_bits;
2449 			if (status == nstatus)
2450 				break;
2451 			schedule_timeout_uninterruptible(1);
2452 		} while (time_after_eq(end_time, jiffies));
2453 	}
2454 
2455 	if (chip->device_type == DEVICE_SIS) {
2456 		/* unmute the output on SIS7012 */
2457 		iputword(chip, 0x4c, igetword(chip, 0x4c) | 1);
2458 	}
2459 	if (chip->device_type == DEVICE_NFORCE && !spdif_aclink) {
2460 		/* enable SPDIF interrupt */
2461 		unsigned int val;
2462 		pci_read_config_dword(chip->pci, 0x4c, &val);
2463 		val |= 0x1000000;
2464 		pci_write_config_dword(chip->pci, 0x4c, val);
2465 	}
2466       	return 0;
2467 }
2468 
2469 static int snd_intel8x0_ali_chip_init(struct intel8x0 *chip, int probing)
2470 {
2471 	u32 reg;
2472 	int i = 0;
2473 
2474 	reg = igetdword(chip, ICHREG(ALI_SCR));
2475 	if ((reg & 2) == 0)	/* Cold required */
2476 		reg |= 2;
2477 	else
2478 		reg |= 1;	/* Warm */
2479 	reg &= ~0x80000000;	/* ACLink on */
2480 	iputdword(chip, ICHREG(ALI_SCR), reg);
2481 
2482 	for (i = 0; i < HZ / 2; i++) {
2483 		if (! (igetdword(chip, ICHREG(ALI_INTERRUPTSR)) & ALI_INT_GPIO))
2484 			goto __ok;
2485 		schedule_timeout_uninterruptible(1);
2486 	}
2487 	dev_err(chip->card->dev, "AC'97 reset failed.\n");
2488 	if (probing)
2489 		return -EIO;
2490 
2491  __ok:
2492 	for (i = 0; i < HZ / 2; i++) {
2493 		reg = igetdword(chip, ICHREG(ALI_RTSR));
2494 		if (reg & 0x80) /* primary codec */
2495 			break;
2496 		iputdword(chip, ICHREG(ALI_RTSR), reg | 0x80);
2497 		schedule_timeout_uninterruptible(1);
2498 	}
2499 
2500 	do_ali_reset(chip);
2501 	return 0;
2502 }
2503 
2504 static int snd_intel8x0_chip_init(struct intel8x0 *chip, int probing)
2505 {
2506 	unsigned int i, timeout;
2507 	int err;
2508 
2509 	if (chip->device_type != DEVICE_ALI) {
2510 		if ((err = snd_intel8x0_ich_chip_init(chip, probing)) < 0)
2511 			return err;
2512 		iagetword(chip, 0);	/* clear semaphore flag */
2513 	} else {
2514 		if ((err = snd_intel8x0_ali_chip_init(chip, probing)) < 0)
2515 			return err;
2516 	}
2517 
2518 	/* disable interrupts */
2519 	for (i = 0; i < chip->bdbars_count; i++)
2520 		iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
2521 	/* reset channels */
2522 	for (i = 0; i < chip->bdbars_count; i++)
2523 		iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
2524 	for (i = 0; i < chip->bdbars_count; i++) {
2525 	        timeout = 100000;
2526 	        while (--timeout != 0) {
2527         		if ((igetbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset) & ICH_RESETREGS) == 0)
2528         		        break;
2529                 }
2530                 if (timeout == 0)
2531 			dev_err(chip->card->dev, "reset of registers failed?\n");
2532         }
2533 	/* initialize Buffer Descriptor Lists */
2534 	for (i = 0; i < chip->bdbars_count; i++)
2535 		iputdword(chip, ICH_REG_OFF_BDBAR + chip->ichd[i].reg_offset,
2536 			  chip->ichd[i].bdbar_addr);
2537 	return 0;
2538 }
2539 
2540 static int snd_intel8x0_free(struct intel8x0 *chip)
2541 {
2542 	unsigned int i;
2543 
2544 	if (chip->irq < 0)
2545 		goto __hw_end;
2546 	/* disable interrupts */
2547 	for (i = 0; i < chip->bdbars_count; i++)
2548 		iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
2549 	/* reset channels */
2550 	for (i = 0; i < chip->bdbars_count; i++)
2551 		iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
2552 	if (chip->device_type == DEVICE_NFORCE && !spdif_aclink) {
2553 		/* stop the spdif interrupt */
2554 		unsigned int val;
2555 		pci_read_config_dword(chip->pci, 0x4c, &val);
2556 		val &= ~0x1000000;
2557 		pci_write_config_dword(chip->pci, 0x4c, val);
2558 	}
2559 	/* --- */
2560 
2561       __hw_end:
2562 	if (chip->irq >= 0)
2563 		free_irq(chip->irq, chip);
2564 	if (chip->bdbars.area)
2565 		snd_dma_free_pages(&chip->bdbars);
2566 	if (chip->addr)
2567 		pci_iounmap(chip->pci, chip->addr);
2568 	if (chip->bmaddr)
2569 		pci_iounmap(chip->pci, chip->bmaddr);
2570 	pci_release_regions(chip->pci);
2571 	pci_disable_device(chip->pci);
2572 	kfree(chip);
2573 	return 0;
2574 }
2575 
2576 #ifdef CONFIG_PM_SLEEP
2577 /*
2578  * power management
2579  */
2580 static int intel8x0_suspend(struct device *dev)
2581 {
2582 	struct snd_card *card = dev_get_drvdata(dev);
2583 	struct intel8x0 *chip = card->private_data;
2584 	int i;
2585 
2586 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2587 	for (i = 0; i < chip->ncodecs; i++)
2588 		snd_ac97_suspend(chip->ac97[i]);
2589 	if (chip->device_type == DEVICE_INTEL_ICH4)
2590 		chip->sdm_saved = igetbyte(chip, ICHREG(SDM));
2591 
2592 	if (chip->irq >= 0) {
2593 		free_irq(chip->irq, chip);
2594 		chip->irq = -1;
2595 		card->sync_irq = -1;
2596 	}
2597 	return 0;
2598 }
2599 
2600 static int intel8x0_resume(struct device *dev)
2601 {
2602 	struct pci_dev *pci = to_pci_dev(dev);
2603 	struct snd_card *card = dev_get_drvdata(dev);
2604 	struct intel8x0 *chip = card->private_data;
2605 	int i;
2606 
2607 	snd_intel8x0_chip_init(chip, 0);
2608 	if (request_irq(pci->irq, snd_intel8x0_interrupt,
2609 			IRQF_SHARED, KBUILD_MODNAME, chip)) {
2610 		dev_err(dev, "unable to grab IRQ %d, disabling device\n",
2611 			pci->irq);
2612 		snd_card_disconnect(card);
2613 		return -EIO;
2614 	}
2615 	chip->irq = pci->irq;
2616 	card->sync_irq = chip->irq;
2617 
2618 	/* re-initialize mixer stuff */
2619 	if (chip->device_type == DEVICE_INTEL_ICH4 && !spdif_aclink) {
2620 		/* enable separate SDINs for ICH4 */
2621 		iputbyte(chip, ICHREG(SDM), chip->sdm_saved);
2622 		/* use slot 10/11 for SPDIF */
2623 		iputdword(chip, ICHREG(GLOB_CNT),
2624 			  (igetdword(chip, ICHREG(GLOB_CNT)) & ~ICH_PCM_SPDIF_MASK) |
2625 			  ICH_PCM_SPDIF_1011);
2626 	}
2627 
2628 	for (i = 0; i < chip->ncodecs; i++)
2629 		snd_ac97_resume(chip->ac97[i]);
2630 
2631 	/* resume status */
2632 	for (i = 0; i < chip->bdbars_count; i++) {
2633 		struct ichdev *ichdev = &chip->ichd[i];
2634 		unsigned long port = ichdev->reg_offset;
2635 		if (! ichdev->substream || ! ichdev->suspended)
2636 			continue;
2637 		if (ichdev->ichd == ICHD_PCMOUT)
2638 			snd_intel8x0_setup_pcm_out(chip, ichdev->substream->runtime);
2639 		iputdword(chip, port + ICH_REG_OFF_BDBAR, ichdev->bdbar_addr);
2640 		iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi);
2641 		iputbyte(chip, port + ICH_REG_OFF_CIV, ichdev->civ);
2642 		iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
2643 	}
2644 
2645 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2646 	return 0;
2647 }
2648 
2649 static SIMPLE_DEV_PM_OPS(intel8x0_pm, intel8x0_suspend, intel8x0_resume);
2650 #define INTEL8X0_PM_OPS	&intel8x0_pm
2651 #else
2652 #define INTEL8X0_PM_OPS	NULL
2653 #endif /* CONFIG_PM_SLEEP */
2654 
2655 #define INTEL8X0_TESTBUF_SIZE	32768	/* enough large for one shot */
2656 
2657 static void intel8x0_measure_ac97_clock(struct intel8x0 *chip)
2658 {
2659 	struct snd_pcm_substream *subs;
2660 	struct ichdev *ichdev;
2661 	unsigned long port;
2662 	unsigned long pos, pos1, t;
2663 	int civ, timeout = 1000, attempt = 1;
2664 	ktime_t start_time, stop_time;
2665 
2666 	if (chip->ac97_bus->clock != 48000)
2667 		return; /* specified in module option */
2668 
2669       __again:
2670 	subs = chip->pcm[0]->streams[0].substream;
2671 	if (! subs || subs->dma_buffer.bytes < INTEL8X0_TESTBUF_SIZE) {
2672 		dev_warn(chip->card->dev,
2673 			 "no playback buffer allocated - aborting measure ac97 clock\n");
2674 		return;
2675 	}
2676 	ichdev = &chip->ichd[ICHD_PCMOUT];
2677 	ichdev->physbuf = subs->dma_buffer.addr;
2678 	ichdev->size = ichdev->fragsize = INTEL8X0_TESTBUF_SIZE;
2679 	ichdev->substream = NULL; /* don't process interrupts */
2680 
2681 	/* set rate */
2682 	if (snd_ac97_set_rate(chip->ac97[0], AC97_PCM_FRONT_DAC_RATE, 48000) < 0) {
2683 		dev_err(chip->card->dev, "cannot set ac97 rate: clock = %d\n",
2684 			chip->ac97_bus->clock);
2685 		return;
2686 	}
2687 	snd_intel8x0_setup_periods(chip, ichdev);
2688 	port = ichdev->reg_offset;
2689 	spin_lock_irq(&chip->reg_lock);
2690 	chip->in_measurement = 1;
2691 	/* trigger */
2692 	if (chip->device_type != DEVICE_ALI)
2693 		iputbyte(chip, port + ICH_REG_OFF_CR, ICH_IOCE | ICH_STARTBM);
2694 	else {
2695 		iputbyte(chip, port + ICH_REG_OFF_CR, ICH_IOCE);
2696 		iputdword(chip, ICHREG(ALI_DMACR), 1 << ichdev->ali_slot);
2697 	}
2698 	start_time = ktime_get();
2699 	spin_unlock_irq(&chip->reg_lock);
2700 	msleep(50);
2701 	spin_lock_irq(&chip->reg_lock);
2702 	/* check the position */
2703 	do {
2704 		civ = igetbyte(chip, ichdev->reg_offset + ICH_REG_OFF_CIV);
2705 		pos1 = igetword(chip, ichdev->reg_offset + ichdev->roff_picb);
2706 		if (pos1 == 0) {
2707 			udelay(10);
2708 			continue;
2709 		}
2710 		if (civ == igetbyte(chip, ichdev->reg_offset + ICH_REG_OFF_CIV) &&
2711 		    pos1 == igetword(chip, ichdev->reg_offset + ichdev->roff_picb))
2712 			break;
2713 	} while (timeout--);
2714 	if (pos1 == 0) {	/* oops, this value is not reliable */
2715 		pos = 0;
2716 	} else {
2717 		pos = ichdev->fragsize1;
2718 		pos -= pos1 << ichdev->pos_shift;
2719 		pos += ichdev->position;
2720 	}
2721 	chip->in_measurement = 0;
2722 	stop_time = ktime_get();
2723 	/* stop */
2724 	if (chip->device_type == DEVICE_ALI) {
2725 		iputdword(chip, ICHREG(ALI_DMACR), 1 << (ichdev->ali_slot + 16));
2726 		iputbyte(chip, port + ICH_REG_OFF_CR, 0);
2727 		while (igetbyte(chip, port + ICH_REG_OFF_CR))
2728 			;
2729 	} else {
2730 		iputbyte(chip, port + ICH_REG_OFF_CR, 0);
2731 		while (!(igetbyte(chip, port + ichdev->roff_sr) & ICH_DCH))
2732 			;
2733 	}
2734 	iputbyte(chip, port + ICH_REG_OFF_CR, ICH_RESETREGS);
2735 	spin_unlock_irq(&chip->reg_lock);
2736 
2737 	if (pos == 0) {
2738 		dev_err(chip->card->dev,
2739 			"measure - unreliable DMA position..\n");
2740 	      __retry:
2741 		if (attempt < 3) {
2742 			msleep(300);
2743 			attempt++;
2744 			goto __again;
2745 		}
2746 		goto __end;
2747 	}
2748 
2749 	pos /= 4;
2750 	t = ktime_us_delta(stop_time, start_time);
2751 	dev_info(chip->card->dev,
2752 		 "%s: measured %lu usecs (%lu samples)\n", __func__, t, pos);
2753 	if (t == 0) {
2754 		dev_err(chip->card->dev, "?? calculation error..\n");
2755 		goto __retry;
2756 	}
2757 	pos *= 1000;
2758 	pos = (pos / t) * 1000 + ((pos % t) * 1000) / t;
2759 	if (pos < 40000 || pos >= 60000) {
2760 		/* abnormal value. hw problem? */
2761 		dev_info(chip->card->dev, "measured clock %ld rejected\n", pos);
2762 		goto __retry;
2763 	} else if (pos > 40500 && pos < 41500)
2764 		/* first exception - 41000Hz reference clock */
2765 		chip->ac97_bus->clock = 41000;
2766 	else if (pos > 43600 && pos < 44600)
2767 		/* second exception - 44100HZ reference clock */
2768 		chip->ac97_bus->clock = 44100;
2769 	else if (pos < 47500 || pos > 48500)
2770 		/* not 48000Hz, tuning the clock.. */
2771 		chip->ac97_bus->clock = (chip->ac97_bus->clock * 48000) / pos;
2772       __end:
2773 	dev_info(chip->card->dev, "clocking to %d\n", chip->ac97_bus->clock);
2774 	snd_ac97_update_power(chip->ac97[0], AC97_PCM_FRONT_DAC_RATE, 0);
2775 }
2776 
2777 static const struct snd_pci_quirk intel8x0_clock_list[] = {
2778 	SND_PCI_QUIRK(0x0e11, 0x008a, "AD1885", 41000),
2779 	SND_PCI_QUIRK(0x1014, 0x0581, "AD1981B", 48000),
2780 	SND_PCI_QUIRK(0x1028, 0x00be, "AD1885", 44100),
2781 	SND_PCI_QUIRK(0x1028, 0x0177, "AD1980", 48000),
2782 	SND_PCI_QUIRK(0x1028, 0x01ad, "AD1981B", 48000),
2783 	SND_PCI_QUIRK(0x1043, 0x80f3, "AD1985", 48000),
2784 	{ }	/* terminator */
2785 };
2786 
2787 static int intel8x0_in_clock_list(struct intel8x0 *chip)
2788 {
2789 	struct pci_dev *pci = chip->pci;
2790 	const struct snd_pci_quirk *wl;
2791 
2792 	wl = snd_pci_quirk_lookup(pci, intel8x0_clock_list);
2793 	if (!wl)
2794 		return 0;
2795 	dev_info(chip->card->dev, "white list rate for %04x:%04x is %i\n",
2796 	       pci->subsystem_vendor, pci->subsystem_device, wl->value);
2797 	chip->ac97_bus->clock = wl->value;
2798 	return 1;
2799 }
2800 
2801 static void snd_intel8x0_proc_read(struct snd_info_entry * entry,
2802 				   struct snd_info_buffer *buffer)
2803 {
2804 	struct intel8x0 *chip = entry->private_data;
2805 	unsigned int tmp;
2806 
2807 	snd_iprintf(buffer, "Intel8x0\n\n");
2808 	if (chip->device_type == DEVICE_ALI)
2809 		return;
2810 	tmp = igetdword(chip, ICHREG(GLOB_STA));
2811 	snd_iprintf(buffer, "Global control        : 0x%08x\n", igetdword(chip, ICHREG(GLOB_CNT)));
2812 	snd_iprintf(buffer, "Global status         : 0x%08x\n", tmp);
2813 	if (chip->device_type == DEVICE_INTEL_ICH4)
2814 		snd_iprintf(buffer, "SDM                   : 0x%08x\n", igetdword(chip, ICHREG(SDM)));
2815 	snd_iprintf(buffer, "AC'97 codecs ready    :");
2816 	if (tmp & chip->codec_isr_bits) {
2817 		int i;
2818 		static const char *codecs[3] = {
2819 			"primary", "secondary", "tertiary"
2820 		};
2821 		for (i = 0; i < chip->max_codecs; i++)
2822 			if (tmp & chip->codec_bit[i])
2823 				snd_iprintf(buffer, " %s", codecs[i]);
2824 	} else
2825 		snd_iprintf(buffer, " none");
2826 	snd_iprintf(buffer, "\n");
2827 	if (chip->device_type == DEVICE_INTEL_ICH4 ||
2828 	    chip->device_type == DEVICE_SIS)
2829 		snd_iprintf(buffer, "AC'97 codecs SDIN     : %i %i %i\n",
2830 			chip->ac97_sdin[0],
2831 			chip->ac97_sdin[1],
2832 			chip->ac97_sdin[2]);
2833 }
2834 
2835 static void snd_intel8x0_proc_init(struct intel8x0 *chip)
2836 {
2837 	snd_card_ro_proc_new(chip->card, "intel8x0", chip,
2838 			     snd_intel8x0_proc_read);
2839 }
2840 
2841 static int snd_intel8x0_dev_free(struct snd_device *device)
2842 {
2843 	struct intel8x0 *chip = device->device_data;
2844 	return snd_intel8x0_free(chip);
2845 }
2846 
2847 struct ich_reg_info {
2848 	unsigned int int_sta_mask;
2849 	unsigned int offset;
2850 };
2851 
2852 static const unsigned int ich_codec_bits[3] = {
2853 	ICH_PCR, ICH_SCR, ICH_TCR
2854 };
2855 static const unsigned int sis_codec_bits[3] = {
2856 	ICH_PCR, ICH_SCR, ICH_SIS_TCR
2857 };
2858 
2859 static int snd_intel8x0_inside_vm(struct pci_dev *pci)
2860 {
2861 	int result  = inside_vm;
2862 	char *msg   = NULL;
2863 
2864 	/* check module parameter first (override detection) */
2865 	if (result >= 0) {
2866 		msg = result ? "enable (forced) VM" : "disable (forced) VM";
2867 		goto fini;
2868 	}
2869 
2870 	/* check for known (emulated) devices */
2871 	result = 0;
2872 	if (pci->subsystem_vendor == PCI_SUBVENDOR_ID_REDHAT_QUMRANET &&
2873 	    pci->subsystem_device == PCI_SUBDEVICE_ID_QEMU) {
2874 		/* KVM emulated sound, PCI SSID: 1af4:1100 */
2875 		msg = "enable KVM";
2876 		result = 1;
2877 	} else if (pci->subsystem_vendor == 0x1ab8) {
2878 		/* Parallels VM emulated sound, PCI SSID: 1ab8:xxxx */
2879 		msg = "enable Parallels VM";
2880 		result = 1;
2881 	}
2882 
2883 fini:
2884 	if (msg != NULL)
2885 		dev_info(&pci->dev, "%s optimization\n", msg);
2886 
2887 	return result;
2888 }
2889 
2890 static int snd_intel8x0_create(struct snd_card *card,
2891 			       struct pci_dev *pci,
2892 			       unsigned long device_type,
2893 			       struct intel8x0 **r_intel8x0)
2894 {
2895 	struct intel8x0 *chip;
2896 	int err;
2897 	unsigned int i;
2898 	unsigned int int_sta_masks;
2899 	struct ichdev *ichdev;
2900 	static const struct snd_device_ops ops = {
2901 		.dev_free =	snd_intel8x0_dev_free,
2902 	};
2903 
2904 	static const unsigned int bdbars[] = {
2905 		3, /* DEVICE_INTEL */
2906 		6, /* DEVICE_INTEL_ICH4 */
2907 		3, /* DEVICE_SIS */
2908 		6, /* DEVICE_ALI */
2909 		4, /* DEVICE_NFORCE */
2910 	};
2911 	static const struct ich_reg_info intel_regs[6] = {
2912 		{ ICH_PIINT, 0 },
2913 		{ ICH_POINT, 0x10 },
2914 		{ ICH_MCINT, 0x20 },
2915 		{ ICH_M2INT, 0x40 },
2916 		{ ICH_P2INT, 0x50 },
2917 		{ ICH_SPINT, 0x60 },
2918 	};
2919 	static const struct ich_reg_info nforce_regs[4] = {
2920 		{ ICH_PIINT, 0 },
2921 		{ ICH_POINT, 0x10 },
2922 		{ ICH_MCINT, 0x20 },
2923 		{ ICH_NVSPINT, 0x70 },
2924 	};
2925 	static const struct ich_reg_info ali_regs[6] = {
2926 		{ ALI_INT_PCMIN, 0x40 },
2927 		{ ALI_INT_PCMOUT, 0x50 },
2928 		{ ALI_INT_MICIN, 0x60 },
2929 		{ ALI_INT_CODECSPDIFOUT, 0x70 },
2930 		{ ALI_INT_SPDIFIN, 0xa0 },
2931 		{ ALI_INT_SPDIFOUT, 0xb0 },
2932 	};
2933 	const struct ich_reg_info *tbl;
2934 
2935 	*r_intel8x0 = NULL;
2936 
2937 	if ((err = pci_enable_device(pci)) < 0)
2938 		return err;
2939 
2940 	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
2941 	if (chip == NULL) {
2942 		pci_disable_device(pci);
2943 		return -ENOMEM;
2944 	}
2945 	spin_lock_init(&chip->reg_lock);
2946 	chip->device_type = device_type;
2947 	chip->card = card;
2948 	chip->pci = pci;
2949 	chip->irq = -1;
2950 
2951 	/* module parameters */
2952 	chip->buggy_irq = buggy_irq;
2953 	chip->buggy_semaphore = buggy_semaphore;
2954 	if (xbox)
2955 		chip->xbox = 1;
2956 
2957 	chip->inside_vm = snd_intel8x0_inside_vm(pci);
2958 
2959 	/*
2960 	 * Intel 82443MX running a 100MHz processor system bus has a hardware
2961 	 * bug, which aborts PCI busmaster for audio transfer.  A workaround
2962 	 * is to set the pages as non-cached.  For details, see the errata in
2963 	 *     http://download.intel.com/design/chipsets/specupdt/24505108.pdf
2964 	 */
2965 	if (pci->vendor == PCI_VENDOR_ID_INTEL &&
2966 	    pci->device == PCI_DEVICE_ID_INTEL_440MX)
2967 		chip->fix_nocache = 1; /* enable workaround */
2968 
2969 	if ((err = pci_request_regions(pci, card->shortname)) < 0) {
2970 		kfree(chip);
2971 		pci_disable_device(pci);
2972 		return err;
2973 	}
2974 
2975 	if (device_type == DEVICE_ALI) {
2976 		/* ALI5455 has no ac97 region */
2977 		chip->bmaddr = pci_iomap(pci, 0, 0);
2978 		goto port_inited;
2979 	}
2980 
2981 	if (pci_resource_flags(pci, 2) & IORESOURCE_MEM) /* ICH4 and Nforce */
2982 		chip->addr = pci_iomap(pci, 2, 0);
2983 	else
2984 		chip->addr = pci_iomap(pci, 0, 0);
2985 	if (!chip->addr) {
2986 		dev_err(card->dev, "AC'97 space ioremap problem\n");
2987 		snd_intel8x0_free(chip);
2988 		return -EIO;
2989 	}
2990 	if (pci_resource_flags(pci, 3) & IORESOURCE_MEM) /* ICH4 */
2991 		chip->bmaddr = pci_iomap(pci, 3, 0);
2992 	else
2993 		chip->bmaddr = pci_iomap(pci, 1, 0);
2994 
2995  port_inited:
2996 	if (!chip->bmaddr) {
2997 		dev_err(card->dev, "Controller space ioremap problem\n");
2998 		snd_intel8x0_free(chip);
2999 		return -EIO;
3000 	}
3001 	chip->bdbars_count = bdbars[device_type];
3002 
3003 	/* initialize offsets */
3004 	switch (device_type) {
3005 	case DEVICE_NFORCE:
3006 		tbl = nforce_regs;
3007 		break;
3008 	case DEVICE_ALI:
3009 		tbl = ali_regs;
3010 		break;
3011 	default:
3012 		tbl = intel_regs;
3013 		break;
3014 	}
3015 	for (i = 0; i < chip->bdbars_count; i++) {
3016 		ichdev = &chip->ichd[i];
3017 		ichdev->ichd = i;
3018 		ichdev->reg_offset = tbl[i].offset;
3019 		ichdev->int_sta_mask = tbl[i].int_sta_mask;
3020 		if (device_type == DEVICE_SIS) {
3021 			/* SiS 7012 swaps the registers */
3022 			ichdev->roff_sr = ICH_REG_OFF_PICB;
3023 			ichdev->roff_picb = ICH_REG_OFF_SR;
3024 		} else {
3025 			ichdev->roff_sr = ICH_REG_OFF_SR;
3026 			ichdev->roff_picb = ICH_REG_OFF_PICB;
3027 		}
3028 		if (device_type == DEVICE_ALI)
3029 			ichdev->ali_slot = (ichdev->reg_offset - 0x40) / 0x10;
3030 		/* SIS7012 handles the pcm data in bytes, others are in samples */
3031 		ichdev->pos_shift = (device_type == DEVICE_SIS) ? 0 : 1;
3032 	}
3033 
3034 	/* allocate buffer descriptor lists */
3035 	/* the start of each lists must be aligned to 8 bytes */
3036 	if (snd_dma_alloc_pages(intel8x0_dma_type(chip), &pci->dev,
3037 				chip->bdbars_count * sizeof(u32) * ICH_MAX_FRAGS * 2,
3038 				&chip->bdbars) < 0) {
3039 		snd_intel8x0_free(chip);
3040 		dev_err(card->dev, "cannot allocate buffer descriptors\n");
3041 		return -ENOMEM;
3042 	}
3043 	/* tables must be aligned to 8 bytes here, but the kernel pages
3044 	   are much bigger, so we don't care (on i386) */
3045 	int_sta_masks = 0;
3046 	for (i = 0; i < chip->bdbars_count; i++) {
3047 		ichdev = &chip->ichd[i];
3048 		ichdev->bdbar = ((__le32 *)chip->bdbars.area) +
3049 			(i * ICH_MAX_FRAGS * 2);
3050 		ichdev->bdbar_addr = chip->bdbars.addr +
3051 			(i * sizeof(u32) * ICH_MAX_FRAGS * 2);
3052 		int_sta_masks |= ichdev->int_sta_mask;
3053 	}
3054 	chip->int_sta_reg = device_type == DEVICE_ALI ?
3055 		ICH_REG_ALI_INTERRUPTSR : ICH_REG_GLOB_STA;
3056 	chip->int_sta_mask = int_sta_masks;
3057 
3058 	pci_set_master(pci);
3059 
3060 	switch(chip->device_type) {
3061 	case DEVICE_INTEL_ICH4:
3062 		/* ICH4 can have three codecs */
3063 		chip->max_codecs = 3;
3064 		chip->codec_bit = ich_codec_bits;
3065 		chip->codec_ready_bits = ICH_PRI | ICH_SRI | ICH_TRI;
3066 		break;
3067 	case DEVICE_SIS:
3068 		/* recent SIS7012 can have three codecs */
3069 		chip->max_codecs = 3;
3070 		chip->codec_bit = sis_codec_bits;
3071 		chip->codec_ready_bits = ICH_PRI | ICH_SRI | ICH_SIS_TRI;
3072 		break;
3073 	default:
3074 		/* others up to two codecs */
3075 		chip->max_codecs = 2;
3076 		chip->codec_bit = ich_codec_bits;
3077 		chip->codec_ready_bits = ICH_PRI | ICH_SRI;
3078 		break;
3079 	}
3080 	for (i = 0; i < chip->max_codecs; i++)
3081 		chip->codec_isr_bits |= chip->codec_bit[i];
3082 
3083 	if ((err = snd_intel8x0_chip_init(chip, 1)) < 0) {
3084 		snd_intel8x0_free(chip);
3085 		return err;
3086 	}
3087 
3088 	/* request irq after initializaing int_sta_mask, etc */
3089 	if (request_irq(pci->irq, snd_intel8x0_interrupt,
3090 			IRQF_SHARED, KBUILD_MODNAME, chip)) {
3091 		dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
3092 		snd_intel8x0_free(chip);
3093 		return -EBUSY;
3094 	}
3095 	chip->irq = pci->irq;
3096 	card->sync_irq = chip->irq;
3097 
3098 	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
3099 		snd_intel8x0_free(chip);
3100 		return err;
3101 	}
3102 
3103 	*r_intel8x0 = chip;
3104 	return 0;
3105 }
3106 
3107 static struct shortname_table {
3108 	unsigned int id;
3109 	const char *s;
3110 } shortnames[] = {
3111 	{ PCI_DEVICE_ID_INTEL_82801AA_5, "Intel 82801AA-ICH" },
3112 	{ PCI_DEVICE_ID_INTEL_82801AB_5, "Intel 82901AB-ICH0" },
3113 	{ PCI_DEVICE_ID_INTEL_82801BA_4, "Intel 82801BA-ICH2" },
3114 	{ PCI_DEVICE_ID_INTEL_440MX, "Intel 440MX" },
3115 	{ PCI_DEVICE_ID_INTEL_82801CA_5, "Intel 82801CA-ICH3" },
3116 	{ PCI_DEVICE_ID_INTEL_82801DB_5, "Intel 82801DB-ICH4" },
3117 	{ PCI_DEVICE_ID_INTEL_82801EB_5, "Intel ICH5" },
3118 	{ PCI_DEVICE_ID_INTEL_ESB_5, "Intel 6300ESB" },
3119 	{ PCI_DEVICE_ID_INTEL_ICH6_18, "Intel ICH6" },
3120 	{ PCI_DEVICE_ID_INTEL_ICH7_20, "Intel ICH7" },
3121 	{ PCI_DEVICE_ID_INTEL_ESB2_14, "Intel ESB2" },
3122 	{ PCI_DEVICE_ID_SI_7012, "SiS SI7012" },
3123 	{ PCI_DEVICE_ID_NVIDIA_MCP1_AUDIO, "NVidia nForce" },
3124 	{ PCI_DEVICE_ID_NVIDIA_MCP2_AUDIO, "NVidia nForce2" },
3125 	{ PCI_DEVICE_ID_NVIDIA_MCP3_AUDIO, "NVidia nForce3" },
3126 	{ PCI_DEVICE_ID_NVIDIA_CK8S_AUDIO, "NVidia CK8S" },
3127 	{ PCI_DEVICE_ID_NVIDIA_CK804_AUDIO, "NVidia CK804" },
3128 	{ PCI_DEVICE_ID_NVIDIA_CK8_AUDIO, "NVidia CK8" },
3129 	{ 0x003a, "NVidia MCP04" },
3130 	{ 0x746d, "AMD AMD8111" },
3131 	{ 0x7445, "AMD AMD768" },
3132 	{ 0x5455, "ALi M5455" },
3133 	{ 0, NULL },
3134 };
3135 
3136 static const struct snd_pci_quirk spdif_aclink_defaults[] = {
3137 	SND_PCI_QUIRK(0x147b, 0x1c1a, "ASUS KN8", 1),
3138 	{ } /* end */
3139 };
3140 
3141 /* look up white/black list for SPDIF over ac-link */
3142 static int check_default_spdif_aclink(struct pci_dev *pci)
3143 {
3144 	const struct snd_pci_quirk *w;
3145 
3146 	w = snd_pci_quirk_lookup(pci, spdif_aclink_defaults);
3147 	if (w) {
3148 		if (w->value)
3149 			dev_dbg(&pci->dev,
3150 				"Using SPDIF over AC-Link for %s\n",
3151 				    snd_pci_quirk_name(w));
3152 		else
3153 			dev_dbg(&pci->dev,
3154 				"Using integrated SPDIF DMA for %s\n",
3155 				    snd_pci_quirk_name(w));
3156 		return w->value;
3157 	}
3158 	return 0;
3159 }
3160 
3161 static int snd_intel8x0_probe(struct pci_dev *pci,
3162 			      const struct pci_device_id *pci_id)
3163 {
3164 	struct snd_card *card;
3165 	struct intel8x0 *chip;
3166 	int err;
3167 	struct shortname_table *name;
3168 
3169 	err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
3170 	if (err < 0)
3171 		return err;
3172 
3173 	if (spdif_aclink < 0)
3174 		spdif_aclink = check_default_spdif_aclink(pci);
3175 
3176 	strcpy(card->driver, "ICH");
3177 	if (!spdif_aclink) {
3178 		switch (pci_id->driver_data) {
3179 		case DEVICE_NFORCE:
3180 			strcpy(card->driver, "NFORCE");
3181 			break;
3182 		case DEVICE_INTEL_ICH4:
3183 			strcpy(card->driver, "ICH4");
3184 		}
3185 	}
3186 
3187 	strcpy(card->shortname, "Intel ICH");
3188 	for (name = shortnames; name->id; name++) {
3189 		if (pci->device == name->id) {
3190 			strcpy(card->shortname, name->s);
3191 			break;
3192 		}
3193 	}
3194 
3195 	if (buggy_irq < 0) {
3196 		/* some Nforce[2] and ICH boards have problems with IRQ handling.
3197 		 * Needs to return IRQ_HANDLED for unknown irqs.
3198 		 */
3199 		if (pci_id->driver_data == DEVICE_NFORCE)
3200 			buggy_irq = 1;
3201 		else
3202 			buggy_irq = 0;
3203 	}
3204 
3205 	if ((err = snd_intel8x0_create(card, pci, pci_id->driver_data,
3206 				       &chip)) < 0) {
3207 		snd_card_free(card);
3208 		return err;
3209 	}
3210 	card->private_data = chip;
3211 
3212 	if ((err = snd_intel8x0_mixer(chip, ac97_clock, ac97_quirk)) < 0) {
3213 		snd_card_free(card);
3214 		return err;
3215 	}
3216 	if ((err = snd_intel8x0_pcm(chip)) < 0) {
3217 		snd_card_free(card);
3218 		return err;
3219 	}
3220 
3221 	snd_intel8x0_proc_init(chip);
3222 
3223 	snprintf(card->longname, sizeof(card->longname),
3224 		 "%s with %s at irq %i", card->shortname,
3225 		 snd_ac97_get_short_name(chip->ac97[0]), chip->irq);
3226 
3227 	if (ac97_clock == 0 || ac97_clock == 1) {
3228 		if (ac97_clock == 0) {
3229 			if (intel8x0_in_clock_list(chip) == 0)
3230 				intel8x0_measure_ac97_clock(chip);
3231 		} else {
3232 			intel8x0_measure_ac97_clock(chip);
3233 		}
3234 	}
3235 
3236 	if ((err = snd_card_register(card)) < 0) {
3237 		snd_card_free(card);
3238 		return err;
3239 	}
3240 	pci_set_drvdata(pci, card);
3241 	return 0;
3242 }
3243 
3244 static void snd_intel8x0_remove(struct pci_dev *pci)
3245 {
3246 	snd_card_free(pci_get_drvdata(pci));
3247 }
3248 
3249 static struct pci_driver intel8x0_driver = {
3250 	.name = KBUILD_MODNAME,
3251 	.id_table = snd_intel8x0_ids,
3252 	.probe = snd_intel8x0_probe,
3253 	.remove = snd_intel8x0_remove,
3254 	.driver = {
3255 		.pm = INTEL8X0_PM_OPS,
3256 	},
3257 };
3258 
3259 module_pci_driver(intel8x0_driver);
3260