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RT-AC66 3.0.0.4.374.130 core
[tomato.git] / release / src-rt-6.x / linux / linux-2.6 / sound / pci / cs4281.c
blob44cf546076474c8f5e4ed61c181551262302f733
1 /*
2 * Driver for Cirrus Logic CS4281 based PCI soundcard
3 * Copyright (c) by Jaroslav Kysela <perex@suse.cz>,
4 *
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 */
21
22 #include <sound/driver.h>
23 #include <asm/io.h>
24 #include <linux/delay.h>
25 #include <linux/interrupt.h>
26 #include <linux/init.h>
27 #include <linux/pci.h>
28 #include <linux/slab.h>
29 #include <linux/gameport.h>
30 #include <linux/moduleparam.h>
31 #include <sound/core.h>
32 #include <sound/control.h>
33 #include <sound/pcm.h>
34 #include <sound/rawmidi.h>
35 #include <sound/ac97_codec.h>
36 #include <sound/tlv.h>
37 #include <sound/opl3.h>
38 #include <sound/initval.h>
39
40
41 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
42 MODULE_DESCRIPTION("Cirrus Logic CS4281");
43 MODULE_LICENSE("GPL");
44 MODULE_SUPPORTED_DEVICE("{{Cirrus Logic,CS4281}}");
45
46 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
47 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
48 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable switches */
49 static int dual_codec[SNDRV_CARDS]; /* dual codec */
50
51 module_param_array(index, int, NULL, 0444);
52 MODULE_PARM_DESC(index, "Index value for CS4281 soundcard.");
53 module_param_array(id, charp, NULL, 0444);
54 MODULE_PARM_DESC(id, "ID string for CS4281 soundcard.");
55 module_param_array(enable, bool, NULL, 0444);
56 MODULE_PARM_DESC(enable, "Enable CS4281 soundcard.");
57 module_param_array(dual_codec, bool, NULL, 0444);
58 MODULE_PARM_DESC(dual_codec, "Secondary Codec ID (0 = disabled).");
59
60 /*
61 * Direct registers
62 */
63
64 #define CS4281_BA0_SIZE 0x1000
65 #define CS4281_BA1_SIZE 0x10000
66
67 /*
68 * BA0 registers
69 */
70 #define BA0_HISR 0x0000 /* Host Interrupt Status Register */
71 #define BA0_HISR_INTENA (1<<31) /* Internal Interrupt Enable Bit */
72 #define BA0_HISR_MIDI (1<<22) /* MIDI port interrupt */
73 #define BA0_HISR_FIFOI (1<<20) /* FIFO polled interrupt */
74 #define BA0_HISR_DMAI (1<<18) /* DMA interrupt (half or end) */
75 #define BA0_HISR_FIFO(c) (1<<(12+(c))) /* FIFO channel interrupt */
76 #define BA0_HISR_DMA(c) (1<<(8+(c))) /* DMA channel interrupt */
77 #define BA0_HISR_GPPI (1<<5) /* General Purpose Input (Primary chip) */
78 #define BA0_HISR_GPSI (1<<4) /* General Purpose Input (Secondary chip) */
79 #define BA0_HISR_GP3I (1<<3) /* GPIO3 pin Interrupt */
80 #define BA0_HISR_GP1I (1<<2) /* GPIO1 pin Interrupt */
81 #define BA0_HISR_VUPI (1<<1) /* VOLUP pin Interrupt */
82 #define BA0_HISR_VDNI (1<<0) /* VOLDN pin Interrupt */
83
84 #define BA0_HICR 0x0008 /* Host Interrupt Control Register */
85 #define BA0_HICR_CHGM (1<<1) /* INTENA Change Mask */
86 #define BA0_HICR_IEV (1<<0) /* INTENA Value */
87 #define BA0_HICR_EOI (3<<0) /* End of Interrupt command */
88
89 #define BA0_HIMR 0x000c /* Host Interrupt Mask Register */
90 /* Use same contants as for BA0_HISR */
91
92 #define BA0_IIER 0x0010 /* ISA Interrupt Enable Register */
93
94 #define BA0_HDSR0 0x00f0 /* Host DMA Engine 0 Status Register */
95 #define BA0_HDSR1 0x00f4 /* Host DMA Engine 1 Status Register */
96 #define BA0_HDSR2 0x00f8 /* Host DMA Engine 2 Status Register */
97 #define BA0_HDSR3 0x00fc /* Host DMA Engine 3 Status Register */
98
99 #define BA0_HDSR_CH1P (1<<25) /* Channel 1 Pending */
100 #define BA0_HDSR_CH2P (1<<24) /* Channel 2 Pending */
101 #define BA0_HDSR_DHTC (1<<17) /* DMA Half Terminal Count */
102 #define BA0_HDSR_DTC (1<<16) /* DMA Terminal Count */
103 #define BA0_HDSR_DRUN (1<<15) /* DMA Running */
104 #define BA0_HDSR_RQ (1<<7) /* Pending Request */
105
106 #define BA0_DCA0 0x0110 /* Host DMA Engine 0 Current Address */
107 #define BA0_DCC0 0x0114 /* Host DMA Engine 0 Current Count */
108 #define BA0_DBA0 0x0118 /* Host DMA Engine 0 Base Address */
109 #define BA0_DBC0 0x011c /* Host DMA Engine 0 Base Count */
110 #define BA0_DCA1 0x0120 /* Host DMA Engine 1 Current Address */
111 #define BA0_DCC1 0x0124 /* Host DMA Engine 1 Current Count */
112 #define BA0_DBA1 0x0128 /* Host DMA Engine 1 Base Address */
113 #define BA0_DBC1 0x012c /* Host DMA Engine 1 Base Count */
114 #define BA0_DCA2 0x0130 /* Host DMA Engine 2 Current Address */
115 #define BA0_DCC2 0x0134 /* Host DMA Engine 2 Current Count */
116 #define BA0_DBA2 0x0138 /* Host DMA Engine 2 Base Address */
117 #define BA0_DBC2 0x013c /* Host DMA Engine 2 Base Count */
118 #define BA0_DCA3 0x0140 /* Host DMA Engine 3 Current Address */
119 #define BA0_DCC3 0x0144 /* Host DMA Engine 3 Current Count */
120 #define BA0_DBA3 0x0148 /* Host DMA Engine 3 Base Address */
121 #define BA0_DBC3 0x014c /* Host DMA Engine 3 Base Count */
122 #define BA0_DMR0 0x0150 /* Host DMA Engine 0 Mode */
123 #define BA0_DCR0 0x0154 /* Host DMA Engine 0 Command */
124 #define BA0_DMR1 0x0158 /* Host DMA Engine 1 Mode */
125 #define BA0_DCR1 0x015c /* Host DMA Engine 1 Command */
126 #define BA0_DMR2 0x0160 /* Host DMA Engine 2 Mode */
127 #define BA0_DCR2 0x0164 /* Host DMA Engine 2 Command */
128 #define BA0_DMR3 0x0168 /* Host DMA Engine 3 Mode */
129 #define BA0_DCR3 0x016c /* Host DMA Engine 3 Command */
130
131 #define BA0_DMR_DMA (1<<29) /* Enable DMA mode */
132 #define BA0_DMR_POLL (1<<28) /* Enable poll mode */
133 #define BA0_DMR_TBC (1<<25) /* Transfer By Channel */
134 #define BA0_DMR_CBC (1<<24) /* Count By Channel (0 = frame resolution) */
135 #define BA0_DMR_SWAPC (1<<22) /* Swap Left/Right Channels */
136 #define BA0_DMR_SIZE20 (1<<20) /* Sample is 20-bit */
137 #define BA0_DMR_USIGN (1<<19) /* Unsigned */
138 #define BA0_DMR_BEND (1<<18) /* Big Endian */
139 #define BA0_DMR_MONO (1<<17) /* Mono */
140 #define BA0_DMR_SIZE8 (1<<16) /* Sample is 8-bit */
141 #define BA0_DMR_TYPE_DEMAND (0<<6)
142 #define BA0_DMR_TYPE_SINGLE (1<<6)
143 #define BA0_DMR_TYPE_BLOCK (2<<6)
144 #define BA0_DMR_TYPE_CASCADE (3<<6) /* Not supported */
145 #define BA0_DMR_DEC (1<<5) /* Access Increment (0) or Decrement (1) */
146 #define BA0_DMR_AUTO (1<<4) /* Auto-Initialize */
147 #define BA0_DMR_TR_VERIFY (0<<2) /* Verify Transfer */
148 #define BA0_DMR_TR_WRITE (1<<2) /* Write Transfer */
149 #define BA0_DMR_TR_READ (2<<2) /* Read Transfer */
150
151 #define BA0_DCR_HTCIE (1<<17) /* Half Terminal Count Interrupt */
152 #define BA0_DCR_TCIE (1<<16) /* Terminal Count Interrupt */
153 #define BA0_DCR_MSK (1<<0) /* DMA Mask bit */
154
155 #define BA0_FCR0 0x0180 /* FIFO Control 0 */
156 #define BA0_FCR1 0x0184 /* FIFO Control 1 */
157 #define BA0_FCR2 0x0188 /* FIFO Control 2 */
158 #define BA0_FCR3 0x018c /* FIFO Control 3 */
159
160 #define BA0_FCR_FEN (1<<31) /* FIFO Enable bit */
161 #define BA0_FCR_DACZ (1<<30) /* DAC Zero */
162 #define BA0_FCR_PSH (1<<29) /* Previous Sample Hold */
163 #define BA0_FCR_RS(x) (((x)&0x1f)<<24) /* Right Slot Mapping */
164 #define BA0_FCR_LS(x) (((x)&0x1f)<<16) /* Left Slot Mapping */
165 #define BA0_FCR_SZ(x) (((x)&0x7f)<<8) /* FIFO buffer size (in samples) */
166 #define BA0_FCR_OF(x) (((x)&0x7f)<<0) /* FIFO starting offset (in samples) */
167
168 #define BA0_FPDR0 0x0190 /* FIFO Polled Data 0 */
169 #define BA0_FPDR1 0x0194 /* FIFO Polled Data 1 */
170 #define BA0_FPDR2 0x0198 /* FIFO Polled Data 2 */
171 #define BA0_FPDR3 0x019c /* FIFO Polled Data 3 */
172
173 #define BA0_FCHS 0x020c /* FIFO Channel Status */
174 #define BA0_FCHS_RCO(x) (1<<(7+(((x)&3)<<3))) /* Right Channel Out */
175 #define BA0_FCHS_LCO(x) (1<<(6+(((x)&3)<<3))) /* Left Channel Out */
176 #define BA0_FCHS_MRP(x) (1<<(5+(((x)&3)<<3))) /* Move Read Pointer */
177 #define BA0_FCHS_FE(x) (1<<(4+(((x)&3)<<3))) /* FIFO Empty */
178 #define BA0_FCHS_FF(x) (1<<(3+(((x)&3)<<3))) /* FIFO Full */
179 #define BA0_FCHS_IOR(x) (1<<(2+(((x)&3)<<3))) /* Internal Overrun Flag */
180 #define BA0_FCHS_RCI(x) (1<<(1+(((x)&3)<<3))) /* Right Channel In */
181 #define BA0_FCHS_LCI(x) (1<<(0+(((x)&3)<<3))) /* Left Channel In */
182
183 #define BA0_FSIC0 0x0210 /* FIFO Status and Interrupt Control 0 */
184 #define BA0_FSIC1 0x0214 /* FIFO Status and Interrupt Control 1 */
185 #define BA0_FSIC2 0x0218 /* FIFO Status and Interrupt Control 2 */
186 #define BA0_FSIC3 0x021c /* FIFO Status and Interrupt Control 3 */
187
188 #define BA0_FSIC_FIC(x) (((x)&0x7f)<<24) /* FIFO Interrupt Count */
189 #define BA0_FSIC_FORIE (1<<23) /* FIFO OverRun Interrupt Enable */
190 #define BA0_FSIC_FURIE (1<<22) /* FIFO UnderRun Interrupt Enable */
191 #define BA0_FSIC_FSCIE (1<<16) /* FIFO Sample Count Interrupt Enable */
192 #define BA0_FSIC_FSC(x) (((x)&0x7f)<<8) /* FIFO Sample Count */
193 #define BA0_FSIC_FOR (1<<7) /* FIFO OverRun */
194 #define BA0_FSIC_FUR (1<<6) /* FIFO UnderRun */
195 #define BA0_FSIC_FSCR (1<<0) /* FIFO Sample Count Reached */
196
197 #define BA0_PMCS 0x0344 /* Power Management Control/Status */
198 #define BA0_CWPR 0x03e0 /* Configuration Write Protect */
199
200 #define BA0_EPPMC 0x03e4 /* Extended PCI Power Management Control */
201 #define BA0_EPPMC_FPDN (1<<14) /* Full Power DowN */
202
203 #define BA0_GPIOR 0x03e8 /* GPIO Pin Interface Register */
204
205 #define BA0_SPMC 0x03ec /* Serial Port Power Management Control (& ASDIN2 enable) */
206 #define BA0_SPMC_GIPPEN (1<<15) /* GP INT Primary PME# Enable */
207 #define BA0_SPMC_GISPEN (1<<14) /* GP INT Secondary PME# Enable */
208 #define BA0_SPMC_EESPD (1<<9) /* EEPROM Serial Port Disable */
209 #define BA0_SPMC_ASDI2E (1<<8) /* ASDIN2 Enable */
210 #define BA0_SPMC_ASDO (1<<7) /* Asynchronous ASDOUT Assertion */
211 #define BA0_SPMC_WUP2 (1<<3) /* Wakeup for Secondary Input */
212 #define BA0_SPMC_WUP1 (1<<2) /* Wakeup for Primary Input */
213 #define BA0_SPMC_ASYNC (1<<1) /* Asynchronous ASYNC Assertion */
214 #define BA0_SPMC_RSTN (1<<0) /* Reset Not! */
215
216 #define BA0_CFLR 0x03f0 /* Configuration Load Register (EEPROM or BIOS) */
217 #define BA0_CFLR_DEFAULT 0x00000001 /* CFLR must be in AC97 link mode */
218 #define BA0_IISR 0x03f4 /* ISA Interrupt Select */
219 #define BA0_TMS 0x03f8 /* Test Register */
220 #define BA0_SSVID 0x03fc /* Subsystem ID register */
221
222 #define BA0_CLKCR1 0x0400 /* Clock Control Register 1 */
223 #define BA0_CLKCR1_CLKON (1<<25) /* Read Only */
224 #define BA0_CLKCR1_DLLRDY (1<<24) /* DLL Ready */
225 #define BA0_CLKCR1_DLLOS (1<<6) /* DLL Output Select */
226 #define BA0_CLKCR1_SWCE (1<<5) /* Clock Enable */
227 #define BA0_CLKCR1_DLLP (1<<4) /* DLL PowerUp */
228 #define BA0_CLKCR1_DLLSS (((x)&3)<<3) /* DLL Source Select */
229
230 #define BA0_FRR 0x0410 /* Feature Reporting Register */
231 #define BA0_SLT12O 0x041c /* Slot 12 GPIO Output Register for AC-Link */
232
233 #define BA0_SERMC 0x0420 /* Serial Port Master Control */
234 #define BA0_SERMC_FCRN (1<<27) /* Force Codec Ready Not */
235 #define BA0_SERMC_ODSEN2 (1<<25) /* On-Demand Support Enable ASDIN2 */
236 #define BA0_SERMC_ODSEN1 (1<<24) /* On-Demand Support Enable ASDIN1 */
237 #define BA0_SERMC_SXLB (1<<21) /* ASDIN2 to ASDOUT Loopback */
238 #define BA0_SERMC_SLB (1<<20) /* ASDOUT to ASDIN2 Loopback */
239 #define BA0_SERMC_LOVF (1<<19) /* Loopback Output Valid Frame bit */
240 #define BA0_SERMC_TCID(x) (((x)&3)<<16) /* Target Secondary Codec ID */
241 #define BA0_SERMC_PXLB (5<<1) /* Primary Port External Loopback */
242 #define BA0_SERMC_PLB (4<<1) /* Primary Port Internal Loopback */
243 #define BA0_SERMC_PTC (7<<1) /* Port Timing Configuration */
244 #define BA0_SERMC_PTC_AC97 (1<<1) /* AC97 mode */
245 #define BA0_SERMC_MSPE (1<<0) /* Master Serial Port Enable */
246
247 #define BA0_SERC1 0x0428 /* Serial Port Configuration 1 */
248 #define BA0_SERC1_SO1F(x) (((x)&7)>>1) /* Primary Output Port Format */
249 #define BA0_SERC1_AC97 (1<<1)
250 #define BA0_SERC1_SO1EN (1<<0) /* Primary Output Port Enable */
251
252 #define BA0_SERC2 0x042c /* Serial Port Configuration 2 */
253 #define BA0_SERC2_SI1F(x) (((x)&7)>>1) /* Primary Input Port Format */
254 #define BA0_SERC2_AC97 (1<<1)
255 #define BA0_SERC2_SI1EN (1<<0) /* Primary Input Port Enable */
256
257 #define BA0_SLT12M 0x045c /* Slot 12 Monitor Register for Primary AC-Link */
258
259 #define BA0_ACCTL 0x0460 /* AC'97 Control */
260 #define BA0_ACCTL_TC (1<<6) /* Target Codec */
261 #define BA0_ACCTL_CRW (1<<4) /* 0=Write, 1=Read Command */
262 #define BA0_ACCTL_DCV (1<<3) /* Dynamic Command Valid */
263 #define BA0_ACCTL_VFRM (1<<2) /* Valid Frame */
264 #define BA0_ACCTL_ESYN (1<<1) /* Enable Sync */
265
266 #define BA0_ACSTS 0x0464 /* AC'97 Status */
267 #define BA0_ACSTS_VSTS (1<<1) /* Valid Status */
268 #define BA0_ACSTS_CRDY (1<<0) /* Codec Ready */
269
270 #define BA0_ACOSV 0x0468 /* AC'97 Output Slot Valid */
271 #define BA0_ACOSV_SLV(x) (1<<((x)-3))
272
273 #define BA0_ACCAD 0x046c /* AC'97 Command Address */
274 #define BA0_ACCDA 0x0470 /* AC'97 Command Data */
275
276 #define BA0_ACISV 0x0474 /* AC'97 Input Slot Valid */
277 #define BA0_ACISV_SLV(x) (1<<((x)-3))
278
279 #define BA0_ACSAD 0x0478 /* AC'97 Status Address */
280 #define BA0_ACSDA 0x047c /* AC'97 Status Data */
281 #define BA0_JSPT 0x0480 /* Joystick poll/trigger */
282 #define BA0_JSCTL 0x0484 /* Joystick control */
283 #define BA0_JSC1 0x0488 /* Joystick control */
284 #define BA0_JSC2 0x048c /* Joystick control */
285 #define BA0_JSIO 0x04a0
286
287 #define BA0_MIDCR 0x0490 /* MIDI Control */
288 #define BA0_MIDCR_MRST (1<<5) /* Reset MIDI Interface */
289 #define BA0_MIDCR_MLB (1<<4) /* MIDI Loop Back Enable */
290 #define BA0_MIDCR_TIE (1<<3) /* MIDI Transmuit Interrupt Enable */
291 #define BA0_MIDCR_RIE (1<<2) /* MIDI Receive Interrupt Enable */
292 #define BA0_MIDCR_RXE (1<<1) /* MIDI Receive Enable */
293 #define BA0_MIDCR_TXE (1<<0) /* MIDI Transmit Enable */
294
295 #define BA0_MIDCMD 0x0494 /* MIDI Command (wo) */
296
297 #define BA0_MIDSR 0x0494 /* MIDI Status (ro) */
298 #define BA0_MIDSR_RDA (1<<15) /* Sticky bit (RBE 1->0) */
299 #define BA0_MIDSR_TBE (1<<14) /* Sticky bit (TBF 0->1) */
300 #define BA0_MIDSR_RBE (1<<7) /* Receive Buffer Empty */
301 #define BA0_MIDSR_TBF (1<<6) /* Transmit Buffer Full */
302
303 #define BA0_MIDWP 0x0498 /* MIDI Write */
304 #define BA0_MIDRP 0x049c /* MIDI Read (ro) */
305
306 #define BA0_AODSD1 0x04a8 /* AC'97 On-Demand Slot Disable for primary link (ro) */
307 #define BA0_AODSD1_NDS(x) (1<<((x)-3))
308
309 #define BA0_AODSD2 0x04ac /* AC'97 On-Demand Slot Disable for secondary link (ro) */
310 #define BA0_AODSD2_NDS(x) (1<<((x)-3))
311
312 #define BA0_CFGI 0x04b0 /* Configure Interface (EEPROM interface) */
313 #define BA0_SLT12M2 0x04dc /* Slot 12 Monitor Register 2 for secondary AC-link */
314 #define BA0_ACSTS2 0x04e4 /* AC'97 Status Register 2 */
315 #define BA0_ACISV2 0x04f4 /* AC'97 Input Slot Valid Register 2 */
316 #define BA0_ACSAD2 0x04f8 /* AC'97 Status Address Register 2 */
317 #define BA0_ACSDA2 0x04fc /* AC'97 Status Data Register 2 */
318 #define BA0_FMSR 0x0730 /* FM Synthesis Status (ro) */
319 #define BA0_B0AP 0x0730 /* FM Bank 0 Address Port (wo) */
320 #define BA0_FMDP 0x0734 /* FM Data Port */
321 #define BA0_B1AP 0x0738 /* FM Bank 1 Address Port */
322 #define BA0_B1DP 0x073c /* FM Bank 1 Data Port */
323
324 #define BA0_SSPM 0x0740 /* Sound System Power Management */
325 #define BA0_SSPM_MIXEN (1<<6) /* Playback SRC + FM/Wavetable MIX */
326 #define BA0_SSPM_CSRCEN (1<<5) /* Capture Sample Rate Converter Enable */
327 #define BA0_SSPM_PSRCEN (1<<4) /* Playback Sample Rate Converter Enable */
328 #define BA0_SSPM_JSEN (1<<3) /* Joystick Enable */
329 #define BA0_SSPM_ACLEN (1<<2) /* Serial Port Engine and AC-Link Enable */
330 #define BA0_SSPM_FMEN (1<<1) /* FM Synthesis Block Enable */
331
332 #define BA0_DACSR 0x0744 /* DAC Sample Rate - Playback SRC */
333 #define BA0_ADCSR 0x0748 /* ADC Sample Rate - Capture SRC */
334
335 #define BA0_SSCR 0x074c /* Sound System Control Register */
336 #define BA0_SSCR_HVS1 (1<<23) /* Hardwave Volume Step (0=1,1=2) */
337 #define BA0_SSCR_MVCS (1<<19) /* Master Volume Codec Select */
338 #define BA0_SSCR_MVLD (1<<18) /* Master Volume Line Out Disable */
339 #define BA0_SSCR_MVAD (1<<17) /* Master Volume Alternate Out Disable */
340 #define BA0_SSCR_MVMD (1<<16) /* Master Volume Mono Out Disable */
341 #define BA0_SSCR_XLPSRC (1<<8) /* External SRC Loopback Mode */
342 #define BA0_SSCR_LPSRC (1<<7) /* SRC Loopback Mode */
343 #define BA0_SSCR_CDTX (1<<5) /* CD Transfer Data */
344 #define BA0_SSCR_HVC (1<<3) /* Harware Volume Control Enable */
345
346 #define BA0_FMLVC 0x0754 /* FM Synthesis Left Volume Control */
347 #define BA0_FMRVC 0x0758 /* FM Synthesis Right Volume Control */
348 #define BA0_SRCSA 0x075c /* SRC Slot Assignments */
349 #define BA0_PPLVC 0x0760 /* PCM Playback Left Volume Control */
350 #define BA0_PPRVC 0x0764 /* PCM Playback Right Volume Control */
351 #define BA0_PASR 0x0768 /* playback sample rate */
352 #define BA0_CASR 0x076C /* capture sample rate */
353
354 /* Source Slot Numbers - Playback */
355 #define SRCSLOT_LEFT_PCM_PLAYBACK 0
356 #define SRCSLOT_RIGHT_PCM_PLAYBACK 1
357 #define SRCSLOT_PHONE_LINE_1_DAC 2
358 #define SRCSLOT_CENTER_PCM_PLAYBACK 3
359 #define SRCSLOT_LEFT_SURROUND_PCM_PLAYBACK 4
360 #define SRCSLOT_RIGHT_SURROUND_PCM_PLAYBACK 5
361 #define SRCSLOT_LFE_PCM_PLAYBACK 6
362 #define SRCSLOT_PHONE_LINE_2_DAC 7
363 #define SRCSLOT_HEADSET_DAC 8
364 #define SRCSLOT_LEFT_WT 29 /* invalid for BA0_SRCSA */
365 #define SRCSLOT_RIGHT_WT 30 /* invalid for BA0_SRCSA */
366
367 /* Source Slot Numbers - Capture */
368 #define SRCSLOT_LEFT_PCM_RECORD 10
369 #define SRCSLOT_RIGHT_PCM_RECORD 11
370 #define SRCSLOT_PHONE_LINE_1_ADC 12
371 #define SRCSLOT_MIC_ADC 13
372 #define SRCSLOT_PHONE_LINE_2_ADC 17
373 #define SRCSLOT_HEADSET_ADC 18
374 #define SRCSLOT_SECONDARY_LEFT_PCM_RECORD 20
375 #define SRCSLOT_SECONDARY_RIGHT_PCM_RECORD 21
376 #define SRCSLOT_SECONDARY_PHONE_LINE_1_ADC 22
377 #define SRCSLOT_SECONDARY_MIC_ADC 23
378 #define SRCSLOT_SECONDARY_PHONE_LINE_2_ADC 27
379 #define SRCSLOT_SECONDARY_HEADSET_ADC 28
380
381 /* Source Slot Numbers - Others */
382 #define SRCSLOT_POWER_DOWN 31
383
384 /* MIDI modes */
385 #define CS4281_MODE_OUTPUT (1<<0)
386 #define CS4281_MODE_INPUT (1<<1)
387
388 /* joystick bits */
389 /* Bits for JSPT */
390 #define JSPT_CAX 0x00000001
391 #define JSPT_CAY 0x00000002
392 #define JSPT_CBX 0x00000004
393 #define JSPT_CBY 0x00000008
394 #define JSPT_BA1 0x00000010
395 #define JSPT_BA2 0x00000020
396 #define JSPT_BB1 0x00000040
397 #define JSPT_BB2 0x00000080
398
399 /* Bits for JSCTL */
400 #define JSCTL_SP_MASK 0x00000003
401 #define JSCTL_SP_SLOW 0x00000000
402 #define JSCTL_SP_MEDIUM_SLOW 0x00000001
403 #define JSCTL_SP_MEDIUM_FAST 0x00000002
404 #define JSCTL_SP_FAST 0x00000003
405 #define JSCTL_ARE 0x00000004
406
407 /* Data register pairs masks */
408 #define JSC1_Y1V_MASK 0x0000FFFF
409 #define JSC1_X1V_MASK 0xFFFF0000
410 #define JSC1_Y1V_SHIFT 0
411 #define JSC1_X1V_SHIFT 16
412 #define JSC2_Y2V_MASK 0x0000FFFF
413 #define JSC2_X2V_MASK 0xFFFF0000
414 #define JSC2_Y2V_SHIFT 0
415 #define JSC2_X2V_SHIFT 16
416
417 /* JS GPIO */
418 #define JSIO_DAX 0x00000001
419 #define JSIO_DAY 0x00000002
420 #define JSIO_DBX 0x00000004
421 #define JSIO_DBY 0x00000008
422 #define JSIO_AXOE 0x00000010
423 #define JSIO_AYOE 0x00000020
424 #define JSIO_BXOE 0x00000040
425 #define JSIO_BYOE 0x00000080
426
427 /*
428 *
429 */
430
431 struct cs4281_dma {
432 struct snd_pcm_substream *substream;
433 unsigned int regDBA; /* offset to DBA register */
434 unsigned int regDCA; /* offset to DCA register */
435 unsigned int regDBC; /* offset to DBC register */
436 unsigned int regDCC; /* offset to DCC register */
437 unsigned int regDMR; /* offset to DMR register */
438 unsigned int regDCR; /* offset to DCR register */
439 unsigned int regHDSR; /* offset to HDSR register */
440 unsigned int regFCR; /* offset to FCR register */
441 unsigned int regFSIC; /* offset to FSIC register */
442 unsigned int valDMR; /* DMA mode */
443 unsigned int valDCR; /* DMA command */
444 unsigned int valFCR; /* FIFO control */
445 unsigned int fifo_offset; /* FIFO offset within BA1 */
446 unsigned char left_slot; /* FIFO left slot */
447 unsigned char right_slot; /* FIFO right slot */
448 int frag; /* period number */
449 };
450
451 #define SUSPEND_REGISTERS 20
452
453 struct cs4281 {
454 int irq;
455
456 void __iomem *ba0; /* virtual (accessible) address */
457 void __iomem *ba1; /* virtual (accessible) address */
458 unsigned long ba0_addr;
459 unsigned long ba1_addr;
460
461 int dual_codec;
462
463 struct snd_ac97_bus *ac97_bus;
464 struct snd_ac97 *ac97;
465 struct snd_ac97 *ac97_secondary;
466
467 struct pci_dev *pci;
468 struct snd_card *card;
469 struct snd_pcm *pcm;
470 struct snd_rawmidi *rmidi;
471 struct snd_rawmidi_substream *midi_input;
472 struct snd_rawmidi_substream *midi_output;
473
474 struct cs4281_dma dma[4];
475
476 unsigned char src_left_play_slot;
477 unsigned char src_right_play_slot;
478 unsigned char src_left_rec_slot;
479 unsigned char src_right_rec_slot;
480
481 unsigned int spurious_dhtc_irq;
482 unsigned int spurious_dtc_irq;
483
484 spinlock_t reg_lock;
485 unsigned int midcr;
486 unsigned int uartm;
487
488 struct gameport *gameport;
489
490 #ifdef CONFIG_PM
491 u32 suspend_regs[SUSPEND_REGISTERS];
492 #endif
493
494 };
495
496 static irqreturn_t snd_cs4281_interrupt(int irq, void *dev_id);
497
498 static struct pci_device_id snd_cs4281_ids[] = {
499 { 0x1013, 0x6005, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* CS4281 */
500 { 0, }
501 };
502
503 MODULE_DEVICE_TABLE(pci, snd_cs4281_ids);
504
505 /*
506 * constants
507 */
508
509 #define CS4281_FIFO_SIZE 32
510
511 /*
512 * common I/O routines
513 */
514
515 static inline void snd_cs4281_pokeBA0(struct cs4281 *chip, unsigned long offset,
516 unsigned int val)
517 {
518 writel(val, chip->ba0 + offset);
519 }
520
521 static inline unsigned int snd_cs4281_peekBA0(struct cs4281 *chip, unsigned long offset)
522 {
523 return readl(chip->ba0 + offset);
524 }
525
526 static void snd_cs4281_ac97_write(struct snd_ac97 *ac97,
527 unsigned short reg, unsigned short val)
528 {
529 /*
530 * 1. Write ACCAD = Command Address Register = 46Ch for AC97 register address
531 * 2. Write ACCDA = Command Data Register = 470h for data to write to AC97
532 * 3. Write ACCTL = Control Register = 460h for initiating the write
533 * 4. Read ACCTL = 460h, DCV should be reset by now and 460h = 07h
534 * 5. if DCV not cleared, break and return error
535 */
536 struct cs4281 *chip = ac97->private_data;
537 int count;
538
539 /*
540 * Setup the AC97 control registers on the CS461x to send the
541 * appropriate command to the AC97 to perform the read.
542 * ACCAD = Command Address Register = 46Ch
543 * ACCDA = Command Data Register = 470h
544 * ACCTL = Control Register = 460h
545 * set DCV - will clear when process completed
546 * reset CRW - Write command
547 * set VFRM - valid frame enabled
548 * set ESYN - ASYNC generation enabled
549 * set RSTN - ARST# inactive, AC97 codec not reset
550 */
551 snd_cs4281_pokeBA0(chip, BA0_ACCAD, reg);
552 snd_cs4281_pokeBA0(chip, BA0_ACCDA, val);
553 snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_DCV | BA0_ACCTL_VFRM |
554 BA0_ACCTL_ESYN | (ac97->num ? BA0_ACCTL_TC : 0));
555 for (count = 0; count < 2000; count++) {
556 /*
557 * First, we want to wait for a short time.
558 */
559 udelay(10);
560 /*
561 * Now, check to see if the write has completed.
562 * ACCTL = 460h, DCV should be reset by now and 460h = 07h
563 */
564 if (!(snd_cs4281_peekBA0(chip, BA0_ACCTL) & BA0_ACCTL_DCV)) {
565 return;
566 }
567 }
568 snd_printk(KERN_ERR "AC'97 write problem, reg = 0x%x, val = 0x%x\n", reg, val);
569 }
570
571 static unsigned short snd_cs4281_ac97_read(struct snd_ac97 *ac97,
572 unsigned short reg)
573 {
574 struct cs4281 *chip = ac97->private_data;
575 int count;
576 unsigned short result;
577 // FIXME: volatile is necessary in the following due to a bug of
578 // some gcc versions
579 volatile int ac97_num = ((volatile struct snd_ac97 *)ac97)->num;
580
581 /*
582 * 1. Write ACCAD = Command Address Register = 46Ch for AC97 register address
583 * 2. Write ACCDA = Command Data Register = 470h for data to write to AC97
584 * 3. Write ACCTL = Control Register = 460h for initiating the write
585 * 4. Read ACCTL = 460h, DCV should be reset by now and 460h = 17h
586 * 5. if DCV not cleared, break and return error
587 * 6. Read ACSTS = Status Register = 464h, check VSTS bit
588 */
589
590 snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSDA2 : BA0_ACSDA);
591
592 /*
593 * Setup the AC97 control registers on the CS461x to send the
594 * appropriate command to the AC97 to perform the read.
595 * ACCAD = Command Address Register = 46Ch
596 * ACCDA = Command Data Register = 470h
597 * ACCTL = Control Register = 460h
598 * set DCV - will clear when process completed
599 * set CRW - Read command
600 * set VFRM - valid frame enabled
601 * set ESYN - ASYNC generation enabled
602 * set RSTN - ARST# inactive, AC97 codec not reset
603 */
604
605 snd_cs4281_pokeBA0(chip, BA0_ACCAD, reg);
606 snd_cs4281_pokeBA0(chip, BA0_ACCDA, 0);
607 snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_DCV | BA0_ACCTL_CRW |
608 BA0_ACCTL_VFRM | BA0_ACCTL_ESYN |
609 (ac97_num ? BA0_ACCTL_TC : 0));
610
611
612 /*
613 * Wait for the read to occur.
614 */
615 for (count = 0; count < 500; count++) {
616 /*
617 * First, we want to wait for a short time.
618 */
619 udelay(10);
620 /*
621 * Now, check to see if the read has completed.
622 * ACCTL = 460h, DCV should be reset by now and 460h = 17h
623 */
624 if (!(snd_cs4281_peekBA0(chip, BA0_ACCTL) & BA0_ACCTL_DCV))
625 goto __ok1;
626 }
627
628 snd_printk(KERN_ERR "AC'97 read problem (ACCTL_DCV), reg = 0x%x\n", reg);
629 result = 0xffff;
630 goto __end;
631
632 __ok1:
633 /*
634 * Wait for the valid status bit to go active.
635 */
636 for (count = 0; count < 100; count++) {
637 /*
638 * Read the AC97 status register.
639 * ACSTS = Status Register = 464h
640 * VSTS - Valid Status
641 */
642 if (snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSTS2 : BA0_ACSTS) & BA0_ACSTS_VSTS)
643 goto __ok2;
644 udelay(10);
645 }
646
647 snd_printk(KERN_ERR "AC'97 read problem (ACSTS_VSTS), reg = 0x%x\n", reg);
648 result = 0xffff;
649 goto __end;
650
651 __ok2:
652 /*
653 * Read the data returned from the AC97 register.
654 * ACSDA = Status Data Register = 474h
655 */
656 result = snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSDA2 : BA0_ACSDA);
657
658 __end:
659 return result;
660 }
661
662 /*
663 * PCM part
664 */
665
666 static int snd_cs4281_trigger(struct snd_pcm_substream *substream, int cmd)
667 {
668 struct cs4281_dma *dma = substream->runtime->private_data;
669 struct cs4281 *chip = snd_pcm_substream_chip(substream);
670
671 spin_lock(&chip->reg_lock);
672 switch (cmd) {
673 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
674 dma->valDCR |= BA0_DCR_MSK;
675 dma->valFCR |= BA0_FCR_FEN;
676 break;
677 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
678 dma->valDCR &= ~BA0_DCR_MSK;
679 dma->valFCR &= ~BA0_FCR_FEN;
680 break;
681 case SNDRV_PCM_TRIGGER_START:
682 case SNDRV_PCM_TRIGGER_RESUME:
683 snd_cs4281_pokeBA0(chip, dma->regDMR, dma->valDMR & ~BA0_DMR_DMA);
684 dma->valDMR |= BA0_DMR_DMA;
685 dma->valDCR &= ~BA0_DCR_MSK;
686 dma->valFCR |= BA0_FCR_FEN;
687 break;
688 case SNDRV_PCM_TRIGGER_STOP:
689 case SNDRV_PCM_TRIGGER_SUSPEND:
690 dma->valDMR &= ~(BA0_DMR_DMA|BA0_DMR_POLL);
691 dma->valDCR |= BA0_DCR_MSK;
692 dma->valFCR &= ~BA0_FCR_FEN;
693 /* Leave wave playback FIFO enabled for FM */
694 if (dma->regFCR != BA0_FCR0)
695 dma->valFCR &= ~BA0_FCR_FEN;
696 break;
697 default:
698 spin_unlock(&chip->reg_lock);
699 return -EINVAL;
700 }
701 snd_cs4281_pokeBA0(chip, dma->regDMR, dma->valDMR);
702 snd_cs4281_pokeBA0(chip, dma->regFCR, dma->valFCR);
703 snd_cs4281_pokeBA0(chip, dma->regDCR, dma->valDCR);
704 spin_unlock(&chip->reg_lock);
705 return 0;
706 }
707
708 static unsigned int snd_cs4281_rate(unsigned int rate, unsigned int *real_rate)
709 {
710 unsigned int val = ~0;
711
712 if (real_rate)
713 *real_rate = rate;
714 /* special "hardcoded" rates */
715 switch (rate) {
716 case 8000: return 5;
717 case 11025: return 4;
718 case 16000: return 3;
719 case 22050: return 2;
720 case 44100: return 1;
721 case 48000: return 0;
722 default:
723 goto __variable;
724 }
725 __variable:
726 val = 1536000 / rate;
727 if (real_rate)
728 *real_rate = 1536000 / val;
729 return val;
730 }
731
732 static void snd_cs4281_mode(struct cs4281 *chip, struct cs4281_dma *dma,
733 struct snd_pcm_runtime *runtime,
734 int capture, int src)
735 {
736 int rec_mono;
737
738 dma->valDMR = BA0_DMR_TYPE_SINGLE | BA0_DMR_AUTO |
739 (capture ? BA0_DMR_TR_WRITE : BA0_DMR_TR_READ);
740 if (runtime->channels == 1)
741 dma->valDMR |= BA0_DMR_MONO;
742 if (snd_pcm_format_unsigned(runtime->format) > 0)
743 dma->valDMR |= BA0_DMR_USIGN;
744 if (snd_pcm_format_big_endian(runtime->format) > 0)
745 dma->valDMR |= BA0_DMR_BEND;
746 switch (snd_pcm_format_width(runtime->format)) {
747 case 8: dma->valDMR |= BA0_DMR_SIZE8;
748 if (runtime->channels == 1)
749 dma->valDMR |= BA0_DMR_SWAPC;
750 break;
751 case 32: dma->valDMR |= BA0_DMR_SIZE20; break;
752 }
753 dma->frag = 0; /* for workaround */
754 dma->valDCR = BA0_DCR_TCIE | BA0_DCR_MSK;
755 if (runtime->buffer_size != runtime->period_size)
756 dma->valDCR |= BA0_DCR_HTCIE;
757 /* Initialize DMA */
758 snd_cs4281_pokeBA0(chip, dma->regDBA, runtime->dma_addr);
759 snd_cs4281_pokeBA0(chip, dma->regDBC, runtime->buffer_size - 1);
760 rec_mono = (chip->dma[1].valDMR & BA0_DMR_MONO) == BA0_DMR_MONO;
761 snd_cs4281_pokeBA0(chip, BA0_SRCSA, (chip->src_left_play_slot << 0) |
762 (chip->src_right_play_slot << 8) |
763 (chip->src_left_rec_slot << 16) |
764 ((rec_mono ? 31 : chip->src_right_rec_slot) << 24));
765 if (!src)
766 goto __skip_src;
767 if (!capture) {
768 if (dma->left_slot == chip->src_left_play_slot) {
769 unsigned int val = snd_cs4281_rate(runtime->rate, NULL);
770 snd_assert(dma->right_slot == chip->src_right_play_slot, );
771 snd_cs4281_pokeBA0(chip, BA0_DACSR, val);
772 }
773 } else {
774 if (dma->left_slot == chip->src_left_rec_slot) {
775 unsigned int val = snd_cs4281_rate(runtime->rate, NULL);
776 snd_assert(dma->right_slot == chip->src_right_rec_slot, );
777 snd_cs4281_pokeBA0(chip, BA0_ADCSR, val);
778 }
779 }
780 __skip_src:
781 /* Deactivate wave playback FIFO before changing slot assignments */
782 if (dma->regFCR == BA0_FCR0)
783 snd_cs4281_pokeBA0(chip, dma->regFCR, snd_cs4281_peekBA0(chip, dma->regFCR) & ~BA0_FCR_FEN);
784 /* Initialize FIFO */
785 dma->valFCR = BA0_FCR_LS(dma->left_slot) |
786 BA0_FCR_RS(capture && (dma->valDMR & BA0_DMR_MONO) ? 31 : dma->right_slot) |
787 BA0_FCR_SZ(CS4281_FIFO_SIZE) |
788 BA0_FCR_OF(dma->fifo_offset);
789 snd_cs4281_pokeBA0(chip, dma->regFCR, dma->valFCR | (capture ? BA0_FCR_PSH : 0));
790 /* Activate FIFO again for FM playback */
791 if (dma->regFCR == BA0_FCR0)
792 snd_cs4281_pokeBA0(chip, dma->regFCR, dma->valFCR | BA0_FCR_FEN);
793 /* Clear FIFO Status and Interrupt Control Register */
794 snd_cs4281_pokeBA0(chip, dma->regFSIC, 0);
795 }
796
797 static int snd_cs4281_hw_params(struct snd_pcm_substream *substream,
798 struct snd_pcm_hw_params *hw_params)
799 {
800 return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
801 }
802
803 static int snd_cs4281_hw_free(struct snd_pcm_substream *substream)
804 {
805 return snd_pcm_lib_free_pages(substream);
806 }
807
808 static int snd_cs4281_playback_prepare(struct snd_pcm_substream *substream)
809 {
810 struct snd_pcm_runtime *runtime = substream->runtime;
811 struct cs4281_dma *dma = runtime->private_data;
812 struct cs4281 *chip = snd_pcm_substream_chip(substream);
813
814 spin_lock_irq(&chip->reg_lock);
815 snd_cs4281_mode(chip, dma, runtime, 0, 1);
816 spin_unlock_irq(&chip->reg_lock);
817 return 0;
818 }
819
820 static int snd_cs4281_capture_prepare(struct snd_pcm_substream *substream)
821 {
822 struct snd_pcm_runtime *runtime = substream->runtime;
823 struct cs4281_dma *dma = runtime->private_data;
824 struct cs4281 *chip = snd_pcm_substream_chip(substream);
825
826 spin_lock_irq(&chip->reg_lock);
827 snd_cs4281_mode(chip, dma, runtime, 1, 1);
828 spin_unlock_irq(&chip->reg_lock);
829 return 0;
830 }
831
832 static snd_pcm_uframes_t snd_cs4281_pointer(struct snd_pcm_substream *substream)
833 {
834 struct snd_pcm_runtime *runtime = substream->runtime;
835 struct cs4281_dma *dma = runtime->private_data;
836 struct cs4281 *chip = snd_pcm_substream_chip(substream);
837
838 // printk("DCC = 0x%x, buffer_size = 0x%x, jiffies = %li\n", snd_cs4281_peekBA0(chip, dma->regDCC), runtime->buffer_size, jiffies);
839 return runtime->buffer_size -
840 snd_cs4281_peekBA0(chip, dma->regDCC) - 1;
841 }
842
843 static struct snd_pcm_hardware snd_cs4281_playback =
844 {
845 .info = (SNDRV_PCM_INFO_MMAP |
846 SNDRV_PCM_INFO_INTERLEAVED |
847 SNDRV_PCM_INFO_MMAP_VALID |
848 SNDRV_PCM_INFO_PAUSE |
849 SNDRV_PCM_INFO_RESUME |
850 SNDRV_PCM_INFO_SYNC_START),
851 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
852 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_S16_LE |
853 SNDRV_PCM_FMTBIT_U16_BE | SNDRV_PCM_FMTBIT_S16_BE |
854 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_S32_LE |
855 SNDRV_PCM_FMTBIT_U32_BE | SNDRV_PCM_FMTBIT_S32_BE,
856 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
857 .rate_min = 4000,
858 .rate_max = 48000,
859 .channels_min = 1,
860 .channels_max = 2,
861 .buffer_bytes_max = (512*1024),
862 .period_bytes_min = 64,
863 .period_bytes_max = (512*1024),
864 .periods_min = 1,
865 .periods_max = 2,
866 .fifo_size = CS4281_FIFO_SIZE,
867 };
868
869 static struct snd_pcm_hardware snd_cs4281_capture =
870 {
871 .info = (SNDRV_PCM_INFO_MMAP |
872 SNDRV_PCM_INFO_INTERLEAVED |
873 SNDRV_PCM_INFO_MMAP_VALID |
874 SNDRV_PCM_INFO_PAUSE |
875 SNDRV_PCM_INFO_RESUME |
876 SNDRV_PCM_INFO_SYNC_START),
877 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
878 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_S16_LE |
879 SNDRV_PCM_FMTBIT_U16_BE | SNDRV_PCM_FMTBIT_S16_BE |
880 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_S32_LE |
881 SNDRV_PCM_FMTBIT_U32_BE | SNDRV_PCM_FMTBIT_S32_BE,
882 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
883 .rate_min = 4000,
884 .rate_max = 48000,
885 .channels_min = 1,
886 .channels_max = 2,
887 .buffer_bytes_max = (512*1024),
888 .period_bytes_min = 64,
889 .period_bytes_max = (512*1024),
890 .periods_min = 1,
891 .periods_max = 2,
892 .fifo_size = CS4281_FIFO_SIZE,
893 };
894
895 static int snd_cs4281_playback_open(struct snd_pcm_substream *substream)
896 {
897 struct cs4281 *chip = snd_pcm_substream_chip(substream);
898 struct snd_pcm_runtime *runtime = substream->runtime;
899 struct cs4281_dma *dma;
900
901 dma = &chip->dma[0];
902 dma->substream = substream;
903 dma->left_slot = 0;
904 dma->right_slot = 1;
905 runtime->private_data = dma;
906 runtime->hw = snd_cs4281_playback;
907 snd_pcm_set_sync(substream);
908 /* should be detected from the AC'97 layer, but it seems
909 that although CS4297A rev B reports 18-bit ADC resolution,
910 samples are 20-bit */
911 snd_pcm_hw_constraint_msbits(runtime, 0, 32, 20);
912 return 0;
913 }
914
915 static int snd_cs4281_capture_open(struct snd_pcm_substream *substream)
916 {
917 struct cs4281 *chip = snd_pcm_substream_chip(substream);
918 struct snd_pcm_runtime *runtime = substream->runtime;
919 struct cs4281_dma *dma;
920
921 dma = &chip->dma[1];
922 dma->substream = substream;
923 dma->left_slot = 10;
924 dma->right_slot = 11;
925 runtime->private_data = dma;
926 runtime->hw = snd_cs4281_capture;
927 snd_pcm_set_sync(substream);
928 /* should be detected from the AC'97 layer, but it seems
929 that although CS4297A rev B reports 18-bit ADC resolution,
930 samples are 20-bit */
931 snd_pcm_hw_constraint_msbits(runtime, 0, 32, 20);
932 return 0;
933 }
934
935 static int snd_cs4281_playback_close(struct snd_pcm_substream *substream)
936 {
937 struct cs4281_dma *dma = substream->runtime->private_data;
938
939 dma->substream = NULL;
940 return 0;
941 }
942
943 static int snd_cs4281_capture_close(struct snd_pcm_substream *substream)
944 {
945 struct cs4281_dma *dma = substream->runtime->private_data;
946
947 dma->substream = NULL;
948 return 0;
949 }
950
951 static struct snd_pcm_ops snd_cs4281_playback_ops = {
952 .open = snd_cs4281_playback_open,
953 .close = snd_cs4281_playback_close,
954 .ioctl = snd_pcm_lib_ioctl,
955 .hw_params = snd_cs4281_hw_params,
956 .hw_free = snd_cs4281_hw_free,
957 .prepare = snd_cs4281_playback_prepare,
958 .trigger = snd_cs4281_trigger,
959 .pointer = snd_cs4281_pointer,
960 };
961
962 static struct snd_pcm_ops snd_cs4281_capture_ops = {
963 .open = snd_cs4281_capture_open,
964 .close = snd_cs4281_capture_close,
965 .ioctl = snd_pcm_lib_ioctl,
966 .hw_params = snd_cs4281_hw_params,
967 .hw_free = snd_cs4281_hw_free,
968 .prepare = snd_cs4281_capture_prepare,
969 .trigger = snd_cs4281_trigger,
970 .pointer = snd_cs4281_pointer,
971 };
972
973 static int __devinit snd_cs4281_pcm(struct cs4281 * chip, int device,
974 struct snd_pcm ** rpcm)
975 {
976 struct snd_pcm *pcm;
977 int err;
978
979 if (rpcm)
980 *rpcm = NULL;
981 err = snd_pcm_new(chip->card, "CS4281", device, 1, 1, &pcm);
982 if (err < 0)
983 return err;
984
985 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_cs4281_playback_ops);
986 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cs4281_capture_ops);
987
988 pcm->private_data = chip;
989 pcm->info_flags = 0;
990 strcpy(pcm->name, "CS4281");
991 chip->pcm = pcm;
992
993 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
994 snd_dma_pci_data(chip->pci), 64*1024, 512*1024);
995
996 if (rpcm)
997 *rpcm = pcm;
998 return 0;
999 }
1000
1001 /*
1002 * Mixer section
1003 */
1004
1005 #define CS_VOL_MASK 0x1f
1006
1007 static int snd_cs4281_info_volume(struct snd_kcontrol *kcontrol,
1008 struct snd_ctl_elem_info *uinfo)
1009 {
1010 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1011 uinfo->count = 2;
1012 uinfo->value.integer.min = 0;
1013 uinfo->value.integer.max = CS_VOL_MASK;
1014 return 0;
1015 }
1016
1017 static int snd_cs4281_get_volume(struct snd_kcontrol *kcontrol,
1018 struct snd_ctl_elem_value *ucontrol)
1019 {
1020 struct cs4281 *chip = snd_kcontrol_chip(kcontrol);
1021 int regL = (kcontrol->private_value >> 16) & 0xffff;
1022 int regR = kcontrol->private_value & 0xffff;
1023 int volL, volR;
1024
1025 volL = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regL) & CS_VOL_MASK);
1026 volR = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regR) & CS_VOL_MASK);
1027
1028 ucontrol->value.integer.value[0] = volL;
1029 ucontrol->value.integer.value[1] = volR;
1030 return 0;
1031 }
1032
1033 static int snd_cs4281_put_volume(struct snd_kcontrol *kcontrol,
1034 struct snd_ctl_elem_value *ucontrol)
1035 {
1036 struct cs4281 *chip = snd_kcontrol_chip(kcontrol);
1037 int change = 0;
1038 int regL = (kcontrol->private_value >> 16) & 0xffff;
1039 int regR = kcontrol->private_value & 0xffff;
1040 int volL, volR;
1041
1042 volL = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regL) & CS_VOL_MASK);
1043 volR = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regR) & CS_VOL_MASK);
1044
1045 if (ucontrol->value.integer.value[0] != volL) {
1046 volL = CS_VOL_MASK - (ucontrol->value.integer.value[0] & CS_VOL_MASK);
1047 snd_cs4281_pokeBA0(chip, regL, volL);
1048 change = 1;
1049 }
1050 if (ucontrol->value.integer.value[1] != volR) {
1051 volR = CS_VOL_MASK - (ucontrol->value.integer.value[1] & CS_VOL_MASK);
1052 snd_cs4281_pokeBA0(chip, regR, volR);
1053 change = 1;
1054 }
1055 return change;
1056 }
1057
1058 static const DECLARE_TLV_DB_SCALE(db_scale_dsp, -4650, 150, 0);
1059
1060 static struct snd_kcontrol_new snd_cs4281_fm_vol =
1061 {
1062 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1063 .name = "Synth Playback Volume",
1064 .info = snd_cs4281_info_volume,
1065 .get = snd_cs4281_get_volume,
1066 .put = snd_cs4281_put_volume,
1067 .private_value = ((BA0_FMLVC << 16) | BA0_FMRVC),
1068 .tlv = { .p = db_scale_dsp },
1069 };
1070
1071 static struct snd_kcontrol_new snd_cs4281_pcm_vol =
1072 {
1073 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1074 .name = "PCM Stream Playback Volume",
1075 .info = snd_cs4281_info_volume,
1076 .get = snd_cs4281_get_volume,
1077 .put = snd_cs4281_put_volume,
1078 .private_value = ((BA0_PPLVC << 16) | BA0_PPRVC),
1079 .tlv = { .p = db_scale_dsp },
1080 };
1081
1082 static void snd_cs4281_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1083 {
1084 struct cs4281 *chip = bus->private_data;
1085 chip->ac97_bus = NULL;
1086 }
1087
1088 static void snd_cs4281_mixer_free_ac97(struct snd_ac97 *ac97)
1089 {
1090 struct cs4281 *chip = ac97->private_data;
1091 if (ac97->num)
1092 chip->ac97_secondary = NULL;
1093 else
1094 chip->ac97 = NULL;
1095 }
1096
1097 static int __devinit snd_cs4281_mixer(struct cs4281 * chip)
1098 {
1099 struct snd_card *card = chip->card;
1100 struct snd_ac97_template ac97;
1101 int err;
1102 static struct snd_ac97_bus_ops ops = {
1103 .write = snd_cs4281_ac97_write,
1104 .read = snd_cs4281_ac97_read,
1105 };
1106
1107 if ((err = snd_ac97_bus(card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1108 return err;
1109 chip->ac97_bus->private_free = snd_cs4281_mixer_free_ac97_bus;
1110
1111 memset(&ac97, 0, sizeof(ac97));
1112 ac97.private_data = chip;
1113 ac97.private_free = snd_cs4281_mixer_free_ac97;
1114 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1115 return err;
1116 if (chip->dual_codec) {
1117 ac97.num = 1;
1118 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97_secondary)) < 0)
1119 return err;
1120 }
1121 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4281_fm_vol, chip))) < 0)
1122 return err;
1123 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4281_pcm_vol, chip))) < 0)
1124 return err;
1125 return 0;
1126 }
1127
1128
1129 /*
1130 * proc interface
1131 */
1132
1133 static void snd_cs4281_proc_read(struct snd_info_entry *entry,
1134 struct snd_info_buffer *buffer)
1135 {
1136 struct cs4281 *chip = entry->private_data;
1137
1138 snd_iprintf(buffer, "Cirrus Logic CS4281\n\n");
1139 snd_iprintf(buffer, "Spurious half IRQs : %u\n", chip->spurious_dhtc_irq);
1140 snd_iprintf(buffer, "Spurious end IRQs : %u\n", chip->spurious_dtc_irq);
1141 }
1142
1143 static long snd_cs4281_BA0_read(struct snd_info_entry *entry,
1144 void *file_private_data,
1145 struct file *file, char __user *buf,
1146 unsigned long count, unsigned long pos)
1147 {
1148 long size;
1149 struct cs4281 *chip = entry->private_data;
1150
1151 size = count;
1152 if (pos + size > CS4281_BA0_SIZE)
1153 size = (long)CS4281_BA0_SIZE - pos;
1154 if (size > 0) {
1155 if (copy_to_user_fromio(buf, chip->ba0 + pos, size))
1156 return -EFAULT;
1157 }
1158 return size;
1159 }
1160
1161 static long snd_cs4281_BA1_read(struct snd_info_entry *entry,
1162 void *file_private_data,
1163 struct file *file, char __user *buf,
1164 unsigned long count, unsigned long pos)
1165 {
1166 long size;
1167 struct cs4281 *chip = entry->private_data;
1168
1169 size = count;
1170 if (pos + size > CS4281_BA1_SIZE)
1171 size = (long)CS4281_BA1_SIZE - pos;
1172 if (size > 0) {
1173 if (copy_to_user_fromio(buf, chip->ba1 + pos, size))
1174 return -EFAULT;
1175 }
1176 return size;
1177 }
1178
1179 static struct snd_info_entry_ops snd_cs4281_proc_ops_BA0 = {
1180 .read = snd_cs4281_BA0_read,
1181 };
1182
1183 static struct snd_info_entry_ops snd_cs4281_proc_ops_BA1 = {
1184 .read = snd_cs4281_BA1_read,
1185 };
1186
1187 static void __devinit snd_cs4281_proc_init(struct cs4281 * chip)
1188 {
1189 struct snd_info_entry *entry;
1190
1191 if (! snd_card_proc_new(chip->card, "cs4281", &entry))
1192 snd_info_set_text_ops(entry, chip, snd_cs4281_proc_read);
1193 if (! snd_card_proc_new(chip->card, "cs4281_BA0", &entry)) {
1194 entry->content = SNDRV_INFO_CONTENT_DATA;
1195 entry->private_data = chip;
1196 entry->c.ops = &snd_cs4281_proc_ops_BA0;
1197 entry->size = CS4281_BA0_SIZE;
1198 }
1199 if (! snd_card_proc_new(chip->card, "cs4281_BA1", &entry)) {
1200 entry->content = SNDRV_INFO_CONTENT_DATA;
1201 entry->private_data = chip;
1202 entry->c.ops = &snd_cs4281_proc_ops_BA1;
1203 entry->size = CS4281_BA1_SIZE;
1204 }
1205 }
1206
1207 /*
1208 * joystick support
1209 */
1210
1211 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
1212
1213 static void snd_cs4281_gameport_trigger(struct gameport *gameport)
1214 {
1215 struct cs4281 *chip = gameport_get_port_data(gameport);
1216
1217 snd_assert(chip, return);
1218 snd_cs4281_pokeBA0(chip, BA0_JSPT, 0xff);
1219 }
1220
1221 static unsigned char snd_cs4281_gameport_read(struct gameport *gameport)
1222 {
1223 struct cs4281 *chip = gameport_get_port_data(gameport);
1224
1225 snd_assert(chip, return 0);
1226 return snd_cs4281_peekBA0(chip, BA0_JSPT);
1227 }
1228
1229 #ifdef COOKED_MODE
1230 static int snd_cs4281_gameport_cooked_read(struct gameport *gameport,
1231 int *axes, int *buttons)
1232 {
1233 struct cs4281 *chip = gameport_get_port_data(gameport);
1234 unsigned js1, js2, jst;
1235
1236 snd_assert(chip, return 0);
1237
1238 js1 = snd_cs4281_peekBA0(chip, BA0_JSC1);
1239 js2 = snd_cs4281_peekBA0(chip, BA0_JSC2);
1240 jst = snd_cs4281_peekBA0(chip, BA0_JSPT);
1241
1242 *buttons = (~jst >> 4) & 0x0F;
1243
1244 axes[0] = ((js1 & JSC1_Y1V_MASK) >> JSC1_Y1V_SHIFT) & 0xFFFF;
1245 axes[1] = ((js1 & JSC1_X1V_MASK) >> JSC1_X1V_SHIFT) & 0xFFFF;
1246 axes[2] = ((js2 & JSC2_Y2V_MASK) >> JSC2_Y2V_SHIFT) & 0xFFFF;
1247 axes[3] = ((js2 & JSC2_X2V_MASK) >> JSC2_X2V_SHIFT) & 0xFFFF;
1248
1249 for (jst = 0; jst < 4; ++jst)
1250 if (axes[jst] == 0xFFFF) axes[jst] = -1;
1251 return 0;
1252 }
1253 #else
1254 #define snd_cs4281_gameport_cooked_read NULL
1255 #endif
1256
1257 static int snd_cs4281_gameport_open(struct gameport *gameport, int mode)
1258 {
1259 switch (mode) {
1260 #ifdef COOKED_MODE
1261 case GAMEPORT_MODE_COOKED:
1262 return 0;
1263 #endif
1264 case GAMEPORT_MODE_RAW:
1265 return 0;
1266 default:
1267 return -1;
1268 }
1269 return 0;
1270 }
1271
1272 static int __devinit snd_cs4281_create_gameport(struct cs4281 *chip)
1273 {
1274 struct gameport *gp;
1275
1276 chip->gameport = gp = gameport_allocate_port();
1277 if (!gp) {
1278 printk(KERN_ERR "cs4281: cannot allocate memory for gameport\n");
1279 return -ENOMEM;
1280 }
1281
1282 gameport_set_name(gp, "CS4281 Gameport");
1283 gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1284 gameport_set_dev_parent(gp, &chip->pci->dev);
1285 gp->open = snd_cs4281_gameport_open;
1286 gp->read = snd_cs4281_gameport_read;
1287 gp->trigger = snd_cs4281_gameport_trigger;
1288 gp->cooked_read = snd_cs4281_gameport_cooked_read;
1289 gameport_set_port_data(gp, chip);
1290
1291 snd_cs4281_pokeBA0(chip, BA0_JSIO, 0xFF); // ?
1292 snd_cs4281_pokeBA0(chip, BA0_JSCTL, JSCTL_SP_MEDIUM_SLOW);
1293
1294 gameport_register_port(gp);
1295
1296 return 0;
1297 }
1298
1299 static void snd_cs4281_free_gameport(struct cs4281 *chip)
1300 {
1301 if (chip->gameport) {
1302 gameport_unregister_port(chip->gameport);
1303 chip->gameport = NULL;
1304 }
1305 }
1306 #else
1307 static inline int snd_cs4281_create_gameport(struct cs4281 *chip) { return -ENOSYS; }
1308 static inline void snd_cs4281_free_gameport(struct cs4281 *chip) { }
1309 #endif /* CONFIG_GAMEPORT || (MODULE && CONFIG_GAMEPORT_MODULE) */
1310
1311 static int snd_cs4281_free(struct cs4281 *chip)
1312 {
1313 snd_cs4281_free_gameport(chip);
1314
1315 if (chip->irq >= 0)
1316 synchronize_irq(chip->irq);
1317
1318 /* Mask interrupts */
1319 snd_cs4281_pokeBA0(chip, BA0_HIMR, 0x7fffffff);
1320 /* Stop the DLL Clock logic. */
1321 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, 0);
1322 /* Sound System Power Management - Turn Everything OFF */
1323 snd_cs4281_pokeBA0(chip, BA0_SSPM, 0);
1324 /* PCI interface - D3 state */
1325 pci_set_power_state(chip->pci, 3);
1326
1327 if (chip->irq >= 0)
1328 free_irq(chip->irq, chip);
1329 if (chip->ba0)
1330 iounmap(chip->ba0);
1331 if (chip->ba1)
1332 iounmap(chip->ba1);
1333 pci_release_regions(chip->pci);
1334 pci_disable_device(chip->pci);
1335
1336 kfree(chip);
1337 return 0;
1338 }
1339
1340 static int snd_cs4281_dev_free(struct snd_device *device)
1341 {
1342 struct cs4281 *chip = device->device_data;
1343 return snd_cs4281_free(chip);
1344 }
1345
1346 static int snd_cs4281_chip_init(struct cs4281 *chip); /* defined below */
1347
1348 static int __devinit snd_cs4281_create(struct snd_card *card,
1349 struct pci_dev *pci,
1350 struct cs4281 ** rchip,
1351 int dual_codec)
1352 {
1353 struct cs4281 *chip;
1354 unsigned int tmp;
1355 int err;
1356 static struct snd_device_ops ops = {
1357 .dev_free = snd_cs4281_dev_free,
1358 };
1359
1360 *rchip = NULL;
1361 if ((err = pci_enable_device(pci)) < 0)
1362 return err;
1363 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1364 if (chip == NULL) {
1365 pci_disable_device(pci);
1366 return -ENOMEM;
1367 }
1368 spin_lock_init(&chip->reg_lock);
1369 chip->card = card;
1370 chip->pci = pci;
1371 chip->irq = -1;
1372 pci_set_master(pci);
1373 if (dual_codec < 0 || dual_codec > 3) {
1374 snd_printk(KERN_ERR "invalid dual_codec option %d\n", dual_codec);
1375 dual_codec = 0;
1376 }
1377 chip->dual_codec = dual_codec;
1378
1379 if ((err = pci_request_regions(pci, "CS4281")) < 0) {
1380 kfree(chip);
1381 pci_disable_device(pci);
1382 return err;
1383 }
1384 chip->ba0_addr = pci_resource_start(pci, 0);
1385 chip->ba1_addr = pci_resource_start(pci, 1);
1386
1387 chip->ba0 = ioremap_nocache(chip->ba0_addr, pci_resource_len(pci, 0));
1388 chip->ba1 = ioremap_nocache(chip->ba1_addr, pci_resource_len(pci, 1));
1389 if (!chip->ba0 || !chip->ba1) {
1390 snd_cs4281_free(chip);
1391 return -ENOMEM;
1392 }
1393
1394 if (request_irq(pci->irq, snd_cs4281_interrupt, IRQF_SHARED,
1395 "CS4281", chip)) {
1396 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1397 snd_cs4281_free(chip);
1398 return -ENOMEM;
1399 }
1400 chip->irq = pci->irq;
1401
1402 tmp = snd_cs4281_chip_init(chip);
1403 if (tmp) {
1404 snd_cs4281_free(chip);
1405 return tmp;
1406 }
1407
1408 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1409 snd_cs4281_free(chip);
1410 return err;
1411 }
1412
1413 snd_cs4281_proc_init(chip);
1414
1415 snd_card_set_dev(card, &pci->dev);
1416
1417 *rchip = chip;
1418 return 0;
1419 }
1420
1421 static int snd_cs4281_chip_init(struct cs4281 *chip)
1422 {
1423 unsigned int tmp;
1424 unsigned long end_time;
1425 int retry_count = 2;
1426
1427 /* Having EPPMC.FPDN=1 prevent proper chip initialisation */
1428 tmp = snd_cs4281_peekBA0(chip, BA0_EPPMC);
1429 if (tmp & BA0_EPPMC_FPDN)
1430 snd_cs4281_pokeBA0(chip, BA0_EPPMC, tmp & ~BA0_EPPMC_FPDN);
1431
1432 __retry:
1433 tmp = snd_cs4281_peekBA0(chip, BA0_CFLR);
1434 if (tmp != BA0_CFLR_DEFAULT) {
1435 snd_cs4281_pokeBA0(chip, BA0_CFLR, BA0_CFLR_DEFAULT);
1436 tmp = snd_cs4281_peekBA0(chip, BA0_CFLR);
1437 if (tmp != BA0_CFLR_DEFAULT) {
1438 snd_printk(KERN_ERR "CFLR setup failed (0x%x)\n", tmp);
1439 return -EIO;
1440 }
1441 }
1442
1443 /* Set the 'Configuration Write Protect' register
1444 * to 4281h. Allows vendor-defined configuration
1445 * space between 0e4h and 0ffh to be written. */
1446 snd_cs4281_pokeBA0(chip, BA0_CWPR, 0x4281);
1447
1448 if ((tmp = snd_cs4281_peekBA0(chip, BA0_SERC1)) != (BA0_SERC1_SO1EN | BA0_SERC1_AC97)) {
1449 snd_printk(KERN_ERR "SERC1 AC'97 check failed (0x%x)\n", tmp);
1450 return -EIO;
1451 }
1452 if ((tmp = snd_cs4281_peekBA0(chip, BA0_SERC2)) != (BA0_SERC2_SI1EN | BA0_SERC2_AC97)) {
1453 snd_printk(KERN_ERR "SERC2 AC'97 check failed (0x%x)\n", tmp);
1454 return -EIO;
1455 }
1456
1457 /* Sound System Power Management */
1458 snd_cs4281_pokeBA0(chip, BA0_SSPM, BA0_SSPM_MIXEN | BA0_SSPM_CSRCEN |
1459 BA0_SSPM_PSRCEN | BA0_SSPM_JSEN |
1460 BA0_SSPM_ACLEN | BA0_SSPM_FMEN);
1461
1462 /* Serial Port Power Management */
1463 /* Blast the clock control register to zero so that the
1464 * PLL starts out in a known state, and blast the master serial
1465 * port control register to zero so that the serial ports also
1466 * start out in a known state. */
1467 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, 0);
1468 snd_cs4281_pokeBA0(chip, BA0_SERMC, 0);
1469
1470 /* Make ESYN go to zero to turn off
1471 * the Sync pulse on the AC97 link. */
1472 snd_cs4281_pokeBA0(chip, BA0_ACCTL, 0);
1473 udelay(50);
1474
1475 /* Drive the ARST# pin low for a minimum of 1uS (as defined in the AC97
1476 * spec) and then drive it high. This is done for non AC97 modes since
1477 * there might be logic external to the CS4281 that uses the ARST# line
1478 * for a reset. */
1479 snd_cs4281_pokeBA0(chip, BA0_SPMC, 0);
1480 udelay(50);
1481 snd_cs4281_pokeBA0(chip, BA0_SPMC, BA0_SPMC_RSTN);
1482 msleep(50);
1483
1484 if (chip->dual_codec)
1485 snd_cs4281_pokeBA0(chip, BA0_SPMC, BA0_SPMC_RSTN | BA0_SPMC_ASDI2E);
1486
1487 /*
1488 * Set the serial port timing configuration.
1489 */
1490 snd_cs4281_pokeBA0(chip, BA0_SERMC,
1491 (chip->dual_codec ? BA0_SERMC_TCID(chip->dual_codec) : BA0_SERMC_TCID(1)) |
1492 BA0_SERMC_PTC_AC97 | BA0_SERMC_MSPE);
1493
1494 /*
1495 * Start the DLL Clock logic.
1496 */
1497 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, BA0_CLKCR1_DLLP);
1498 msleep(50);
1499 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, BA0_CLKCR1_SWCE | BA0_CLKCR1_DLLP);
1500
1501 /*
1502 * Wait for the DLL ready signal from the clock logic.
1503 */
1504 end_time = jiffies + HZ;
1505 do {
1506 /*
1507 * Read the AC97 status register to see if we've seen a CODEC
1508 * signal from the AC97 codec.
1509 */
1510 if (snd_cs4281_peekBA0(chip, BA0_CLKCR1) & BA0_CLKCR1_DLLRDY)
1511 goto __ok0;
1512 schedule_timeout_uninterruptible(1);
1513 } while (time_after_eq(end_time, jiffies));
1514
1515 snd_printk(KERN_ERR "DLLRDY not seen\n");
1516 return -EIO;
1517
1518 __ok0:
1519
1520 /*
1521 * The first thing we do here is to enable sync generation. As soon
1522 * as we start receiving bit clock, we'll start producing the SYNC
1523 * signal.
1524 */
1525 snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_ESYN);
1526
1527 /*
1528 * Wait for the codec ready signal from the AC97 codec.
1529 */
1530 end_time = jiffies + HZ;
1531 do {
1532 /*
1533 * Read the AC97 status register to see if we've seen a CODEC
1534 * signal from the AC97 codec.
1535 */
1536 if (snd_cs4281_peekBA0(chip, BA0_ACSTS) & BA0_ACSTS_CRDY)
1537 goto __ok1;
1538 schedule_timeout_uninterruptible(1);
1539 } while (time_after_eq(end_time, jiffies));
1540
1541 snd_printk(KERN_ERR "never read codec ready from AC'97 (0x%x)\n", snd_cs4281_peekBA0(chip, BA0_ACSTS));
1542 return -EIO;
1543
1544 __ok1:
1545 if (chip->dual_codec) {
1546 end_time = jiffies + HZ;
1547 do {
1548 if (snd_cs4281_peekBA0(chip, BA0_ACSTS2) & BA0_ACSTS_CRDY)
1549 goto __codec2_ok;
1550 schedule_timeout_uninterruptible(1);
1551 } while (time_after_eq(end_time, jiffies));
1552 snd_printk(KERN_INFO "secondary codec doesn't respond. disable it...\n");
1553 chip->dual_codec = 0;
1554 __codec2_ok: ;
1555 }
1556
1557 /*
1558 * Assert the valid frame signal so that we can start sending commands
1559 * to the AC97 codec.
1560 */
1561
1562 snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_VFRM | BA0_ACCTL_ESYN);
1563
1564 /*
1565 * Wait until we've sampled input slots 3 and 4 as valid, meaning that
1566 * the codec is pumping ADC data across the AC-link.
1567 */
1568
1569 end_time = jiffies + HZ;
1570 do {
1571 /*
1572 * Read the input slot valid register and see if input slots 3
1573 * 4 are valid yet.
1574 */
1575 if ((snd_cs4281_peekBA0(chip, BA0_ACISV) & (BA0_ACISV_SLV(3) | BA0_ACISV_SLV(4))) == (BA0_ACISV_SLV(3) | BA0_ACISV_SLV(4)))
1576 goto __ok2;
1577 schedule_timeout_uninterruptible(1);
1578 } while (time_after_eq(end_time, jiffies));
1579
1580 if (--retry_count > 0)
1581 goto __retry;
1582 snd_printk(KERN_ERR "never read ISV3 and ISV4 from AC'97\n");
1583 return -EIO;
1584
1585 __ok2:
1586
1587 /*
1588 * Now, assert valid frame and the slot 3 and 4 valid bits. This will
1589 * commense the transfer of digital audio data to the AC97 codec.
1590 */
1591 snd_cs4281_pokeBA0(chip, BA0_ACOSV, BA0_ACOSV_SLV(3) | BA0_ACOSV_SLV(4));
1592
1593 /*
1594 * Initialize DMA structures
1595 */
1596 for (tmp = 0; tmp < 4; tmp++) {
1597 struct cs4281_dma *dma = &chip->dma[tmp];
1598 dma->regDBA = BA0_DBA0 + (tmp * 0x10);
1599 dma->regDCA = BA0_DCA0 + (tmp * 0x10);
1600 dma->regDBC = BA0_DBC0 + (tmp * 0x10);
1601 dma->regDCC = BA0_DCC0 + (tmp * 0x10);
1602 dma->regDMR = BA0_DMR0 + (tmp * 8);
1603 dma->regDCR = BA0_DCR0 + (tmp * 8);
1604 dma->regHDSR = BA0_HDSR0 + (tmp * 4);
1605 dma->regFCR = BA0_FCR0 + (tmp * 4);
1606 dma->regFSIC = BA0_FSIC0 + (tmp * 4);
1607 dma->fifo_offset = tmp * CS4281_FIFO_SIZE;
1608 snd_cs4281_pokeBA0(chip, dma->regFCR,
1609 BA0_FCR_LS(31) |
1610 BA0_FCR_RS(31) |
1611 BA0_FCR_SZ(CS4281_FIFO_SIZE) |
1612 BA0_FCR_OF(dma->fifo_offset));
1613 }
1614
1615 chip->src_left_play_slot = 0; /* AC'97 left PCM playback (3) */
1616 chip->src_right_play_slot = 1; /* AC'97 right PCM playback (4) */
1617 chip->src_left_rec_slot = 10; /* AC'97 left PCM record (3) */
1618 chip->src_right_rec_slot = 11; /* AC'97 right PCM record (4) */
1619
1620 /* Activate wave playback FIFO for FM playback */
1621 chip->dma[0].valFCR = BA0_FCR_FEN | BA0_FCR_LS(0) |
1622 BA0_FCR_RS(1) |
1623 BA0_FCR_SZ(CS4281_FIFO_SIZE) |
1624 BA0_FCR_OF(chip->dma[0].fifo_offset);
1625 snd_cs4281_pokeBA0(chip, chip->dma[0].regFCR, chip->dma[0].valFCR);
1626 snd_cs4281_pokeBA0(chip, BA0_SRCSA, (chip->src_left_play_slot << 0) |
1627 (chip->src_right_play_slot << 8) |
1628 (chip->src_left_rec_slot << 16) |
1629 (chip->src_right_rec_slot << 24));
1630
1631 /* Initialize digital volume */
1632 snd_cs4281_pokeBA0(chip, BA0_PPLVC, 0);
1633 snd_cs4281_pokeBA0(chip, BA0_PPRVC, 0);
1634
1635 /* Enable IRQs */
1636 snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_EOI);
1637 /* Unmask interrupts */
1638 snd_cs4281_pokeBA0(chip, BA0_HIMR, 0x7fffffff & ~(
1639 BA0_HISR_MIDI |
1640 BA0_HISR_DMAI |
1641 BA0_HISR_DMA(0) |
1642 BA0_HISR_DMA(1) |
1643 BA0_HISR_DMA(2) |
1644 BA0_HISR_DMA(3)));
1645 synchronize_irq(chip->irq);
1646
1647 return 0;
1648 }
1649
1650 /*
1651 * MIDI section
1652 */
1653
1654 static void snd_cs4281_midi_reset(struct cs4281 *chip)
1655 {
1656 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr | BA0_MIDCR_MRST);
1657 udelay(100);
1658 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1659 }
1660
1661 static int snd_cs4281_midi_input_open(struct snd_rawmidi_substream *substream)
1662 {
1663 struct cs4281 *chip = substream->rmidi->private_data;
1664
1665 spin_lock_irq(&chip->reg_lock);
1666 chip->midcr |= BA0_MIDCR_RXE;
1667 chip->midi_input = substream;
1668 if (!(chip->uartm & CS4281_MODE_OUTPUT)) {
1669 snd_cs4281_midi_reset(chip);
1670 } else {
1671 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1672 }
1673 spin_unlock_irq(&chip->reg_lock);
1674 return 0;
1675 }
1676
1677 static int snd_cs4281_midi_input_close(struct snd_rawmidi_substream *substream)
1678 {
1679 struct cs4281 *chip = substream->rmidi->private_data;
1680
1681 spin_lock_irq(&chip->reg_lock);
1682 chip->midcr &= ~(BA0_MIDCR_RXE | BA0_MIDCR_RIE);
1683 chip->midi_input = NULL;
1684 if (!(chip->uartm & CS4281_MODE_OUTPUT)) {
1685 snd_cs4281_midi_reset(chip);
1686 } else {
1687 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1688 }
1689 chip->uartm &= ~CS4281_MODE_INPUT;
1690 spin_unlock_irq(&chip->reg_lock);
1691 return 0;
1692 }
1693
1694 static int snd_cs4281_midi_output_open(struct snd_rawmidi_substream *substream)
1695 {
1696 struct cs4281 *chip = substream->rmidi->private_data;
1697
1698 spin_lock_irq(&chip->reg_lock);
1699 chip->uartm |= CS4281_MODE_OUTPUT;
1700 chip->midcr |= BA0_MIDCR_TXE;
1701 chip->midi_output = substream;
1702 if (!(chip->uartm & CS4281_MODE_INPUT)) {
1703 snd_cs4281_midi_reset(chip);
1704 } else {
1705 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1706 }
1707 spin_unlock_irq(&chip->reg_lock);
1708 return 0;
1709 }
1710
1711 static int snd_cs4281_midi_output_close(struct snd_rawmidi_substream *substream)
1712 {
1713 struct cs4281 *chip = substream->rmidi->private_data;
1714
1715 spin_lock_irq(&chip->reg_lock);
1716 chip->midcr &= ~(BA0_MIDCR_TXE | BA0_MIDCR_TIE);
1717 chip->midi_output = NULL;
1718 if (!(chip->uartm & CS4281_MODE_INPUT)) {
1719 snd_cs4281_midi_reset(chip);
1720 } else {
1721 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1722 }
1723 chip->uartm &= ~CS4281_MODE_OUTPUT;
1724 spin_unlock_irq(&chip->reg_lock);
1725 return 0;
1726 }
1727
1728 static void snd_cs4281_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
1729 {
1730 unsigned long flags;
1731 struct cs4281 *chip = substream->rmidi->private_data;
1732
1733 spin_lock_irqsave(&chip->reg_lock, flags);
1734 if (up) {
1735 if ((chip->midcr & BA0_MIDCR_RIE) == 0) {
1736 chip->midcr |= BA0_MIDCR_RIE;
1737 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1738 }
1739 } else {
1740 if (chip->midcr & BA0_MIDCR_RIE) {
1741 chip->midcr &= ~BA0_MIDCR_RIE;
1742 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1743 }
1744 }
1745 spin_unlock_irqrestore(&chip->reg_lock, flags);
1746 }
1747
1748 static void snd_cs4281_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
1749 {
1750 unsigned long flags;
1751 struct cs4281 *chip = substream->rmidi->private_data;
1752 unsigned char byte;
1753
1754 spin_lock_irqsave(&chip->reg_lock, flags);
1755 if (up) {
1756 if ((chip->midcr & BA0_MIDCR_TIE) == 0) {
1757 chip->midcr |= BA0_MIDCR_TIE;
1758 /* fill UART FIFO buffer at first, and turn Tx interrupts only if necessary */
1759 while ((chip->midcr & BA0_MIDCR_TIE) &&
1760 (snd_cs4281_peekBA0(chip, BA0_MIDSR) & BA0_MIDSR_TBF) == 0) {
1761 if (snd_rawmidi_transmit(substream, &byte, 1) != 1) {
1762 chip->midcr &= ~BA0_MIDCR_TIE;
1763 } else {
1764 snd_cs4281_pokeBA0(chip, BA0_MIDWP, byte);
1765 }
1766 }
1767 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1768 }
1769 } else {
1770 if (chip->midcr & BA0_MIDCR_TIE) {
1771 chip->midcr &= ~BA0_MIDCR_TIE;
1772 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1773 }
1774 }
1775 spin_unlock_irqrestore(&chip->reg_lock, flags);
1776 }
1777
1778 static struct snd_rawmidi_ops snd_cs4281_midi_output =
1779 {
1780 .open = snd_cs4281_midi_output_open,
1781 .close = snd_cs4281_midi_output_close,
1782 .trigger = snd_cs4281_midi_output_trigger,
1783 };
1784
1785 static struct snd_rawmidi_ops snd_cs4281_midi_input =
1786 {
1787 .open = snd_cs4281_midi_input_open,
1788 .close = snd_cs4281_midi_input_close,
1789 .trigger = snd_cs4281_midi_input_trigger,
1790 };
1791
1792 static int __devinit snd_cs4281_midi(struct cs4281 * chip, int device,
1793 struct snd_rawmidi **rrawmidi)
1794 {
1795 struct snd_rawmidi *rmidi;
1796 int err;
1797
1798 if (rrawmidi)
1799 *rrawmidi = NULL;
1800 if ((err = snd_rawmidi_new(chip->card, "CS4281", device, 1, 1, &rmidi)) < 0)
1801 return err;
1802 strcpy(rmidi->name, "CS4281");
1803 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_cs4281_midi_output);
1804 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_cs4281_midi_input);
1805 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT | SNDRV_RAWMIDI_INFO_DUPLEX;
1806 rmidi->private_data = chip;
1807 chip->rmidi = rmidi;
1808 if (rrawmidi)
1809 *rrawmidi = rmidi;
1810 return 0;
1811 }
1812
1813 /*
1814 * Interrupt handler
1815 */
1816
1817 static irqreturn_t snd_cs4281_interrupt(int irq, void *dev_id)
1818 {
1819 struct cs4281 *chip = dev_id;
1820 unsigned int status, dma, val;
1821 struct cs4281_dma *cdma;
1822
1823 if (chip == NULL)
1824 return IRQ_NONE;
1825 status = snd_cs4281_peekBA0(chip, BA0_HISR);
1826 if ((status & 0x7fffffff) == 0) {
1827 snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_EOI);
1828 return IRQ_NONE;
1829 }
1830
1831 if (status & (BA0_HISR_DMA(0)|BA0_HISR_DMA(1)|BA0_HISR_DMA(2)|BA0_HISR_DMA(3))) {
1832 for (dma = 0; dma < 4; dma++)
1833 if (status & BA0_HISR_DMA(dma)) {
1834 cdma = &chip->dma[dma];
1835 spin_lock(&chip->reg_lock);
1836 /* ack DMA IRQ */
1837 val = snd_cs4281_peekBA0(chip, cdma->regHDSR);
1838 /* workaround, sometimes CS4281 acknowledges */
1839 /* end or middle transfer position twice */
1840 cdma->frag++;
1841 if ((val & BA0_HDSR_DHTC) && !(cdma->frag & 1)) {
1842 cdma->frag--;
1843 chip->spurious_dhtc_irq++;
1844 spin_unlock(&chip->reg_lock);
1845 continue;
1846 }
1847 if ((val & BA0_HDSR_DTC) && (cdma->frag & 1)) {
1848 cdma->frag--;
1849 chip->spurious_dtc_irq++;
1850 spin_unlock(&chip->reg_lock);
1851 continue;
1852 }
1853 spin_unlock(&chip->reg_lock);
1854 snd_pcm_period_elapsed(cdma->substream);
1855 }
1856 }
1857
1858 if ((status & BA0_HISR_MIDI) && chip->rmidi) {
1859 unsigned char c;
1860
1861 spin_lock(&chip->reg_lock);
1862 while ((snd_cs4281_peekBA0(chip, BA0_MIDSR) & BA0_MIDSR_RBE) == 0) {
1863 c = snd_cs4281_peekBA0(chip, BA0_MIDRP);
1864 if ((chip->midcr & BA0_MIDCR_RIE) == 0)
1865 continue;
1866 snd_rawmidi_receive(chip->midi_input, &c, 1);
1867 }
1868 while ((snd_cs4281_peekBA0(chip, BA0_MIDSR) & BA0_MIDSR_TBF) == 0) {
1869 if ((chip->midcr & BA0_MIDCR_TIE) == 0)
1870 break;
1871 if (snd_rawmidi_transmit(chip->midi_output, &c, 1) != 1) {
1872 chip->midcr &= ~BA0_MIDCR_TIE;
1873 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1874 break;
1875 }
1876 snd_cs4281_pokeBA0(chip, BA0_MIDWP, c);
1877 }
1878 spin_unlock(&chip->reg_lock);
1879 }
1880
1881 /* EOI to the PCI part... reenables interrupts */
1882 snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_EOI);
1883
1884 return IRQ_HANDLED;
1885 }
1886
1887
1888 /*
1889 * OPL3 command
1890 */
1891 static void snd_cs4281_opl3_command(struct snd_opl3 *opl3, unsigned short cmd,
1892 unsigned char val)
1893 {
1894 unsigned long flags;
1895 struct cs4281 *chip = opl3->private_data;
1896 void __iomem *port;
1897
1898 if (cmd & OPL3_RIGHT)
1899 port = chip->ba0 + BA0_B1AP; /* right port */
1900 else
1901 port = chip->ba0 + BA0_B0AP; /* left port */
1902
1903 spin_lock_irqsave(&opl3->reg_lock, flags);
1904
1905 writel((unsigned int)cmd, port);
1906 udelay(10);
1907
1908 writel((unsigned int)val, port + 4);
1909 udelay(30);
1910
1911 spin_unlock_irqrestore(&opl3->reg_lock, flags);
1912 }
1913
1914 static int __devinit snd_cs4281_probe(struct pci_dev *pci,
1915 const struct pci_device_id *pci_id)
1916 {
1917 static int dev;
1918 struct snd_card *card;
1919 struct cs4281 *chip;
1920 struct snd_opl3 *opl3;
1921 int err;
1922
1923 if (dev >= SNDRV_CARDS)
1924 return -ENODEV;
1925 if (!enable[dev]) {
1926 dev++;
1927 return -ENOENT;
1928 }
1929
1930 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1931 if (card == NULL)
1932 return -ENOMEM;
1933
1934 if ((err = snd_cs4281_create(card, pci, &chip, dual_codec[dev])) < 0) {
1935 snd_card_free(card);
1936 return err;
1937 }
1938 card->private_data = chip;
1939
1940 if ((err = snd_cs4281_mixer(chip)) < 0) {
1941 snd_card_free(card);
1942 return err;
1943 }
1944 if ((err = snd_cs4281_pcm(chip, 0, NULL)) < 0) {
1945 snd_card_free(card);
1946 return err;
1947 }
1948 if ((err = snd_cs4281_midi(chip, 0, NULL)) < 0) {
1949 snd_card_free(card);
1950 return err;
1951 }
1952 if ((err = snd_opl3_new(card, OPL3_HW_OPL3_CS4281, &opl3)) < 0) {
1953 snd_card_free(card);
1954 return err;
1955 }
1956 opl3->private_data = chip;
1957 opl3->command = snd_cs4281_opl3_command;
1958 snd_opl3_init(opl3);
1959 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
1960 snd_card_free(card);
1961 return err;
1962 }
1963 snd_cs4281_create_gameport(chip);
1964 strcpy(card->driver, "CS4281");
1965 strcpy(card->shortname, "Cirrus Logic CS4281");
1966 sprintf(card->longname, "%s at 0x%lx, irq %d",
1967 card->shortname,
1968 chip->ba0_addr,
1969 chip->irq);
1970
1971 if ((err = snd_card_register(card)) < 0) {
1972 snd_card_free(card);
1973 return err;
1974 }
1975
1976 pci_set_drvdata(pci, card);
1977 dev++;
1978 return 0;
1979 }
1980
1981 static void __devexit snd_cs4281_remove(struct pci_dev *pci)
1982 {
1983 snd_card_free(pci_get_drvdata(pci));
1984 pci_set_drvdata(pci, NULL);
1985 }
1986
1987 /*
1988 * Power Management
1989 */
1990 #ifdef CONFIG_PM
1991
1992 static int saved_regs[SUSPEND_REGISTERS] = {
1993 BA0_JSCTL,
1994 BA0_GPIOR,
1995 BA0_SSCR,
1996 BA0_MIDCR,
1997 BA0_SRCSA,
1998 BA0_PASR,
1999 BA0_CASR,
2000 BA0_DACSR,
2001 BA0_ADCSR,
2002 BA0_FMLVC,
2003 BA0_FMRVC,
2004 BA0_PPLVC,
2005 BA0_PPRVC,
2006 };
2007
2008 #define CLKCR1_CKRA 0x00010000L
2009
2010 static int cs4281_suspend(struct pci_dev *pci, pm_message_t state)
2011 {
2012 struct snd_card *card = pci_get_drvdata(pci);
2013 struct cs4281 *chip = card->private_data;
2014 u32 ulCLK;
2015 unsigned int i;
2016
2017 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2018 snd_pcm_suspend_all(chip->pcm);
2019
2020 snd_ac97_suspend(chip->ac97);
2021 snd_ac97_suspend(chip->ac97_secondary);
2022
2023 ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
2024 ulCLK |= CLKCR1_CKRA;
2025 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
2026
2027 /* Disable interrupts. */
2028 snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_CHGM);
2029
2030 /* remember the status registers */
2031 for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
2032 if (saved_regs[i])
2033 chip->suspend_regs[i] = snd_cs4281_peekBA0(chip, saved_regs[i]);
2034
2035 /* Turn off the serial ports. */
2036 snd_cs4281_pokeBA0(chip, BA0_SERMC, 0);
2037
2038 /* Power off FM, Joystick, AC link, */
2039 snd_cs4281_pokeBA0(chip, BA0_SSPM, 0);
2040
2041 /* DLL off. */
2042 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, 0);
2043
2044 /* AC link off. */
2045 snd_cs4281_pokeBA0(chip, BA0_SPMC, 0);
2046
2047 ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
2048 ulCLK &= ~CLKCR1_CKRA;
2049 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
2050
2051 pci_disable_device(pci);
2052 pci_save_state(pci);
2053 pci_set_power_state(pci, pci_choose_state(pci, state));
2054 return 0;
2055 }
2056
2057 static int cs4281_resume(struct pci_dev *pci)
2058 {
2059 struct snd_card *card = pci_get_drvdata(pci);
2060 struct cs4281 *chip = card->private_data;
2061 unsigned int i;
2062 u32 ulCLK;
2063
2064 pci_set_power_state(pci, PCI_D0);
2065 pci_restore_state(pci);
2066 if (pci_enable_device(pci) < 0) {
2067 printk(KERN_ERR "cs4281: pci_enable_device failed, "
2068 "disabling device\n");
2069 snd_card_disconnect(card);
2070 return -EIO;
2071 }
2072 pci_set_master(pci);
2073
2074 ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
2075 ulCLK |= CLKCR1_CKRA;
2076 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
2077
2078 snd_cs4281_chip_init(chip);
2079
2080 /* restore the status registers */
2081 for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
2082 if (saved_regs[i])
2083 snd_cs4281_pokeBA0(chip, saved_regs[i], chip->suspend_regs[i]);
2084
2085 snd_ac97_resume(chip->ac97);
2086 snd_ac97_resume(chip->ac97_secondary);
2087
2088 ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
2089 ulCLK &= ~CLKCR1_CKRA;
2090 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
2091
2092 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2093 return 0;
2094 }
2095 #endif /* CONFIG_PM */
2096
2097 static struct pci_driver driver = {
2098 .name = "CS4281",
2099 .id_table = snd_cs4281_ids,
2100 .probe = snd_cs4281_probe,
2101 .remove = __devexit_p(snd_cs4281_remove),
2102 #ifdef CONFIG_PM
2103 .suspend = cs4281_suspend,
2104 .resume = cs4281_resume,
2105 #endif
2106 };
2107
2108 static int __init alsa_card_cs4281_init(void)
2109 {
2110 return pci_register_driver(&driver);
2111 }
2112
2113 static void __exit alsa_card_cs4281_exit(void)
2114 {
2115 pci_unregister_driver(&driver);
2116 }
2117
2118 module_init(alsa_card_cs4281_init)
2119 module_exit(alsa_card_cs4281_exit)
Tomato firmware and modifications.