1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Driver for Cirrus Logic CS4281 based PCI soundcard
4 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>,
5 */
6
7 #include <linux/io.h>
8 #include <linux/delay.h>
9 #include <linux/interrupt.h>
10 #include <linux/init.h>
11 #include <linux/pci.h>
12 #include <linux/slab.h>
13 #include <linux/gameport.h>
14 #include <linux/module.h>
15 #include <sound/core.h>
16 #include <sound/control.h>
17 #include <sound/pcm.h>
18 #include <sound/rawmidi.h>
19 #include <sound/ac97_codec.h>
20 #include <sound/tlv.h>
21 #include <sound/opl3.h>
22 #include <sound/initval.h>
23
24
25 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
26 MODULE_DESCRIPTION("Cirrus Logic CS4281");
27 MODULE_LICENSE("GPL");
28
29 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
30 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
31 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable switches */
32 static bool dual_codec[SNDRV_CARDS]; /* dual codec */
33
34 module_param_array(index, int, NULL, 0444);
35 MODULE_PARM_DESC(index, "Index value for CS4281 soundcard.");
36 module_param_array(id, charp, NULL, 0444);
37 MODULE_PARM_DESC(id, "ID string for CS4281 soundcard.");
38 module_param_array(enable, bool, NULL, 0444);
39 MODULE_PARM_DESC(enable, "Enable CS4281 soundcard.");
40 module_param_array(dual_codec, bool, NULL, 0444);
41 MODULE_PARM_DESC(dual_codec, "Secondary Codec ID (0 = disabled).");
42
43 /*
44 * Direct registers
45 */
46
47 #define CS4281_BA0_SIZE 0x1000
48 #define CS4281_BA1_SIZE 0x10000
49
50 /*
51 * BA0 registers
52 */
53 #define BA0_HISR 0x0000 /* Host Interrupt Status Register */
54 #define BA0_HISR_INTENA (1<<31) /* Internal Interrupt Enable Bit */
55 #define BA0_HISR_MIDI (1<<22) /* MIDI port interrupt */
56 #define BA0_HISR_FIFOI (1<<20) /* FIFO polled interrupt */
57 #define BA0_HISR_DMAI (1<<18) /* DMA interrupt (half or end) */
58 #define BA0_HISR_FIFO(c) (1<<(12+(c))) /* FIFO channel interrupt */
59 #define BA0_HISR_DMA(c) (1<<(8+(c))) /* DMA channel interrupt */
60 #define BA0_HISR_GPPI (1<<5) /* General Purpose Input (Primary chip) */
61 #define BA0_HISR_GPSI (1<<4) /* General Purpose Input (Secondary chip) */
62 #define BA0_HISR_GP3I (1<<3) /* GPIO3 pin Interrupt */
63 #define BA0_HISR_GP1I (1<<2) /* GPIO1 pin Interrupt */
64 #define BA0_HISR_VUPI (1<<1) /* VOLUP pin Interrupt */
65 #define BA0_HISR_VDNI (1<<0) /* VOLDN pin Interrupt */
66
67 #define BA0_HICR 0x0008 /* Host Interrupt Control Register */
68 #define BA0_HICR_CHGM (1<<1) /* INTENA Change Mask */
69 #define BA0_HICR_IEV (1<<0) /* INTENA Value */
70 #define BA0_HICR_EOI (3<<0) /* End of Interrupt command */
71
72 #define BA0_HIMR 0x000c /* Host Interrupt Mask Register */
73 /* Use same contants as for BA0_HISR */
74
75 #define BA0_IIER 0x0010 /* ISA Interrupt Enable Register */
76
77 #define BA0_HDSR0 0x00f0 /* Host DMA Engine 0 Status Register */
78 #define BA0_HDSR1 0x00f4 /* Host DMA Engine 1 Status Register */
79 #define BA0_HDSR2 0x00f8 /* Host DMA Engine 2 Status Register */
80 #define BA0_HDSR3 0x00fc /* Host DMA Engine 3 Status Register */
81
82 #define BA0_HDSR_CH1P (1<<25) /* Channel 1 Pending */
83 #define BA0_HDSR_CH2P (1<<24) /* Channel 2 Pending */
84 #define BA0_HDSR_DHTC (1<<17) /* DMA Half Terminal Count */
85 #define BA0_HDSR_DTC (1<<16) /* DMA Terminal Count */
86 #define BA0_HDSR_DRUN (1<<15) /* DMA Running */
87 #define BA0_HDSR_RQ (1<<7) /* Pending Request */
88
89 #define BA0_DCA0 0x0110 /* Host DMA Engine 0 Current Address */
90 #define BA0_DCC0 0x0114 /* Host DMA Engine 0 Current Count */
91 #define BA0_DBA0 0x0118 /* Host DMA Engine 0 Base Address */
92 #define BA0_DBC0 0x011c /* Host DMA Engine 0 Base Count */
93 #define BA0_DCA1 0x0120 /* Host DMA Engine 1 Current Address */
94 #define BA0_DCC1 0x0124 /* Host DMA Engine 1 Current Count */
95 #define BA0_DBA1 0x0128 /* Host DMA Engine 1 Base Address */
96 #define BA0_DBC1 0x012c /* Host DMA Engine 1 Base Count */
97 #define BA0_DCA2 0x0130 /* Host DMA Engine 2 Current Address */
98 #define BA0_DCC2 0x0134 /* Host DMA Engine 2 Current Count */
99 #define BA0_DBA2 0x0138 /* Host DMA Engine 2 Base Address */
100 #define BA0_DBC2 0x013c /* Host DMA Engine 2 Base Count */
101 #define BA0_DCA3 0x0140 /* Host DMA Engine 3 Current Address */
102 #define BA0_DCC3 0x0144 /* Host DMA Engine 3 Current Count */
103 #define BA0_DBA3 0x0148 /* Host DMA Engine 3 Base Address */
104 #define BA0_DBC3 0x014c /* Host DMA Engine 3 Base Count */
105 #define BA0_DMR0 0x0150 /* Host DMA Engine 0 Mode */
106 #define BA0_DCR0 0x0154 /* Host DMA Engine 0 Command */
107 #define BA0_DMR1 0x0158 /* Host DMA Engine 1 Mode */
108 #define BA0_DCR1 0x015c /* Host DMA Engine 1 Command */
109 #define BA0_DMR2 0x0160 /* Host DMA Engine 2 Mode */
110 #define BA0_DCR2 0x0164 /* Host DMA Engine 2 Command */
111 #define BA0_DMR3 0x0168 /* Host DMA Engine 3 Mode */
112 #define BA0_DCR3 0x016c /* Host DMA Engine 3 Command */
113
114 #define BA0_DMR_DMA (1<<29) /* Enable DMA mode */
115 #define BA0_DMR_POLL (1<<28) /* Enable poll mode */
116 #define BA0_DMR_TBC (1<<25) /* Transfer By Channel */
117 #define BA0_DMR_CBC (1<<24) /* Count By Channel (0 = frame resolution) */
118 #define BA0_DMR_SWAPC (1<<22) /* Swap Left/Right Channels */
119 #define BA0_DMR_SIZE20 (1<<20) /* Sample is 20-bit */
120 #define BA0_DMR_USIGN (1<<19) /* Unsigned */
121 #define BA0_DMR_BEND (1<<18) /* Big Endian */
122 #define BA0_DMR_MONO (1<<17) /* Mono */
123 #define BA0_DMR_SIZE8 (1<<16) /* Sample is 8-bit */
124 #define BA0_DMR_TYPE_DEMAND (0<<6)
125 #define BA0_DMR_TYPE_SINGLE (1<<6)
126 #define BA0_DMR_TYPE_BLOCK (2<<6)
127 #define BA0_DMR_TYPE_CASCADE (3<<6) /* Not supported */
128 #define BA0_DMR_DEC (1<<5) /* Access Increment (0) or Decrement (1) */
129 #define BA0_DMR_AUTO (1<<4) /* Auto-Initialize */
130 #define BA0_DMR_TR_VERIFY (0<<2) /* Verify Transfer */
131 #define BA0_DMR_TR_WRITE (1<<2) /* Write Transfer */
132 #define BA0_DMR_TR_READ (2<<2) /* Read Transfer */
133
134 #define BA0_DCR_HTCIE (1<<17) /* Half Terminal Count Interrupt */
135 #define BA0_DCR_TCIE (1<<16) /* Terminal Count Interrupt */
136 #define BA0_DCR_MSK (1<<0) /* DMA Mask bit */
137
138 #define BA0_FCR0 0x0180 /* FIFO Control 0 */
139 #define BA0_FCR1 0x0184 /* FIFO Control 1 */
140 #define BA0_FCR2 0x0188 /* FIFO Control 2 */
141 #define BA0_FCR3 0x018c /* FIFO Control 3 */
142
143 #define BA0_FCR_FEN (1<<31) /* FIFO Enable bit */
144 #define BA0_FCR_DACZ (1<<30) /* DAC Zero */
145 #define BA0_FCR_PSH (1<<29) /* Previous Sample Hold */
146 #define BA0_FCR_RS(x) (((x)&0x1f)<<24) /* Right Slot Mapping */
147 #define BA0_FCR_LS(x) (((x)&0x1f)<<16) /* Left Slot Mapping */
148 #define BA0_FCR_SZ(x) (((x)&0x7f)<<8) /* FIFO buffer size (in samples) */
149 #define BA0_FCR_OF(x) (((x)&0x7f)<<0) /* FIFO starting offset (in samples) */
150
151 #define BA0_FPDR0 0x0190 /* FIFO Polled Data 0 */
152 #define BA0_FPDR1 0x0194 /* FIFO Polled Data 1 */
153 #define BA0_FPDR2 0x0198 /* FIFO Polled Data 2 */
154 #define BA0_FPDR3 0x019c /* FIFO Polled Data 3 */
155
156 #define BA0_FCHS 0x020c /* FIFO Channel Status */
157 #define BA0_FCHS_RCO(x) (1<<(7+(((x)&3)<<3))) /* Right Channel Out */
158 #define BA0_FCHS_LCO(x) (1<<(6+(((x)&3)<<3))) /* Left Channel Out */
159 #define BA0_FCHS_MRP(x) (1<<(5+(((x)&3)<<3))) /* Move Read Pointer */
160 #define BA0_FCHS_FE(x) (1<<(4+(((x)&3)<<3))) /* FIFO Empty */
161 #define BA0_FCHS_FF(x) (1<<(3+(((x)&3)<<3))) /* FIFO Full */
162 #define BA0_FCHS_IOR(x) (1<<(2+(((x)&3)<<3))) /* Internal Overrun Flag */
163 #define BA0_FCHS_RCI(x) (1<<(1+(((x)&3)<<3))) /* Right Channel In */
164 #define BA0_FCHS_LCI(x) (1<<(0+(((x)&3)<<3))) /* Left Channel In */
165
166 #define BA0_FSIC0 0x0210 /* FIFO Status and Interrupt Control 0 */
167 #define BA0_FSIC1 0x0214 /* FIFO Status and Interrupt Control 1 */
168 #define BA0_FSIC2 0x0218 /* FIFO Status and Interrupt Control 2 */
169 #define BA0_FSIC3 0x021c /* FIFO Status and Interrupt Control 3 */
170
171 #define BA0_FSIC_FIC(x) (((x)&0x7f)<<24) /* FIFO Interrupt Count */
172 #define BA0_FSIC_FORIE (1<<23) /* FIFO OverRun Interrupt Enable */
173 #define BA0_FSIC_FURIE (1<<22) /* FIFO UnderRun Interrupt Enable */
174 #define BA0_FSIC_FSCIE (1<<16) /* FIFO Sample Count Interrupt Enable */
175 #define BA0_FSIC_FSC(x) (((x)&0x7f)<<8) /* FIFO Sample Count */
176 #define BA0_FSIC_FOR (1<<7) /* FIFO OverRun */
177 #define BA0_FSIC_FUR (1<<6) /* FIFO UnderRun */
178 #define BA0_FSIC_FSCR (1<<0) /* FIFO Sample Count Reached */
179
180 #define BA0_PMCS 0x0344 /* Power Management Control/Status */
181 #define BA0_CWPR 0x03e0 /* Configuration Write Protect */
182
183 #define BA0_EPPMC 0x03e4 /* Extended PCI Power Management Control */
184 #define BA0_EPPMC_FPDN (1<<14) /* Full Power DowN */
185
186 #define BA0_GPIOR 0x03e8 /* GPIO Pin Interface Register */
187
188 #define BA0_SPMC 0x03ec /* Serial Port Power Management Control (& ASDIN2 enable) */
189 #define BA0_SPMC_GIPPEN (1<<15) /* GP INT Primary PME# Enable */
190 #define BA0_SPMC_GISPEN (1<<14) /* GP INT Secondary PME# Enable */
191 #define BA0_SPMC_EESPD (1<<9) /* EEPROM Serial Port Disable */
192 #define BA0_SPMC_ASDI2E (1<<8) /* ASDIN2 Enable */
193 #define BA0_SPMC_ASDO (1<<7) /* Asynchronous ASDOUT Assertion */
194 #define BA0_SPMC_WUP2 (1<<3) /* Wakeup for Secondary Input */
195 #define BA0_SPMC_WUP1 (1<<2) /* Wakeup for Primary Input */
196 #define BA0_SPMC_ASYNC (1<<1) /* Asynchronous ASYNC Assertion */
197 #define BA0_SPMC_RSTN (1<<0) /* Reset Not! */
198
199 #define BA0_CFLR 0x03f0 /* Configuration Load Register (EEPROM or BIOS) */
200 #define BA0_CFLR_DEFAULT 0x00000001 /* CFLR must be in AC97 link mode */
201 #define BA0_IISR 0x03f4 /* ISA Interrupt Select */
202 #define BA0_TMS 0x03f8 /* Test Register */
203 #define BA0_SSVID 0x03fc /* Subsystem ID register */
204
205 #define BA0_CLKCR1 0x0400 /* Clock Control Register 1 */
206 #define BA0_CLKCR1_CLKON (1<<25) /* Read Only */
207 #define BA0_CLKCR1_DLLRDY (1<<24) /* DLL Ready */
208 #define BA0_CLKCR1_DLLOS (1<<6) /* DLL Output Select */
209 #define BA0_CLKCR1_SWCE (1<<5) /* Clock Enable */
210 #define BA0_CLKCR1_DLLP (1<<4) /* DLL PowerUp */
211 #define BA0_CLKCR1_DLLSS (((x)&3)<<3) /* DLL Source Select */
212
213 #define BA0_FRR 0x0410 /* Feature Reporting Register */
214 #define BA0_SLT12O 0x041c /* Slot 12 GPIO Output Register for AC-Link */
215
216 #define BA0_SERMC 0x0420 /* Serial Port Master Control */
217 #define BA0_SERMC_FCRN (1<<27) /* Force Codec Ready Not */
218 #define BA0_SERMC_ODSEN2 (1<<25) /* On-Demand Support Enable ASDIN2 */
219 #define BA0_SERMC_ODSEN1 (1<<24) /* On-Demand Support Enable ASDIN1 */
220 #define BA0_SERMC_SXLB (1<<21) /* ASDIN2 to ASDOUT Loopback */
221 #define BA0_SERMC_SLB (1<<20) /* ASDOUT to ASDIN2 Loopback */
222 #define BA0_SERMC_LOVF (1<<19) /* Loopback Output Valid Frame bit */
223 #define BA0_SERMC_TCID(x) (((x)&3)<<16) /* Target Secondary Codec ID */
224 #define BA0_SERMC_PXLB (5<<1) /* Primary Port External Loopback */
225 #define BA0_SERMC_PLB (4<<1) /* Primary Port Internal Loopback */
226 #define BA0_SERMC_PTC (7<<1) /* Port Timing Configuration */
227 #define BA0_SERMC_PTC_AC97 (1<<1) /* AC97 mode */
228 #define BA0_SERMC_MSPE (1<<0) /* Master Serial Port Enable */
229
230 #define BA0_SERC1 0x0428 /* Serial Port Configuration 1 */
231 #define BA0_SERC1_SO1F(x) (((x)&7)>>1) /* Primary Output Port Format */
232 #define BA0_SERC1_AC97 (1<<1)
233 #define BA0_SERC1_SO1EN (1<<0) /* Primary Output Port Enable */
234
235 #define BA0_SERC2 0x042c /* Serial Port Configuration 2 */
236 #define BA0_SERC2_SI1F(x) (((x)&7)>>1) /* Primary Input Port Format */
237 #define BA0_SERC2_AC97 (1<<1)
238 #define BA0_SERC2_SI1EN (1<<0) /* Primary Input Port Enable */
239
240 #define BA0_SLT12M 0x045c /* Slot 12 Monitor Register for Primary AC-Link */
241
242 #define BA0_ACCTL 0x0460 /* AC'97 Control */
243 #define BA0_ACCTL_TC (1<<6) /* Target Codec */
244 #define BA0_ACCTL_CRW (1<<4) /* 0=Write, 1=Read Command */
245 #define BA0_ACCTL_DCV (1<<3) /* Dynamic Command Valid */
246 #define BA0_ACCTL_VFRM (1<<2) /* Valid Frame */
247 #define BA0_ACCTL_ESYN (1<<1) /* Enable Sync */
248
249 #define BA0_ACSTS 0x0464 /* AC'97 Status */
250 #define BA0_ACSTS_VSTS (1<<1) /* Valid Status */
251 #define BA0_ACSTS_CRDY (1<<0) /* Codec Ready */
252
253 #define BA0_ACOSV 0x0468 /* AC'97 Output Slot Valid */
254 #define BA0_ACOSV_SLV(x) (1<<((x)-3))
255
256 #define BA0_ACCAD 0x046c /* AC'97 Command Address */
257 #define BA0_ACCDA 0x0470 /* AC'97 Command Data */
258
259 #define BA0_ACISV 0x0474 /* AC'97 Input Slot Valid */
260 #define BA0_ACISV_SLV(x) (1<<((x)-3))
261
262 #define BA0_ACSAD 0x0478 /* AC'97 Status Address */
263 #define BA0_ACSDA 0x047c /* AC'97 Status Data */
264 #define BA0_JSPT 0x0480 /* Joystick poll/trigger */
265 #define BA0_JSCTL 0x0484 /* Joystick control */
266 #define BA0_JSC1 0x0488 /* Joystick control */
267 #define BA0_JSC2 0x048c /* Joystick control */
268 #define BA0_JSIO 0x04a0
269
270 #define BA0_MIDCR 0x0490 /* MIDI Control */
271 #define BA0_MIDCR_MRST (1<<5) /* Reset MIDI Interface */
272 #define BA0_MIDCR_MLB (1<<4) /* MIDI Loop Back Enable */
273 #define BA0_MIDCR_TIE (1<<3) /* MIDI Transmuit Interrupt Enable */
274 #define BA0_MIDCR_RIE (1<<2) /* MIDI Receive Interrupt Enable */
275 #define BA0_MIDCR_RXE (1<<1) /* MIDI Receive Enable */
276 #define BA0_MIDCR_TXE (1<<0) /* MIDI Transmit Enable */
277
278 #define BA0_MIDCMD 0x0494 /* MIDI Command (wo) */
279
280 #define BA0_MIDSR 0x0494 /* MIDI Status (ro) */
281 #define BA0_MIDSR_RDA (1<<15) /* Sticky bit (RBE 1->0) */
282 #define BA0_MIDSR_TBE (1<<14) /* Sticky bit (TBF 0->1) */
283 #define BA0_MIDSR_RBE (1<<7) /* Receive Buffer Empty */
284 #define BA0_MIDSR_TBF (1<<6) /* Transmit Buffer Full */
285
286 #define BA0_MIDWP 0x0498 /* MIDI Write */
287 #define BA0_MIDRP 0x049c /* MIDI Read (ro) */
288
289 #define BA0_AODSD1 0x04a8 /* AC'97 On-Demand Slot Disable for primary link (ro) */
290 #define BA0_AODSD1_NDS(x) (1<<((x)-3))
291
292 #define BA0_AODSD2 0x04ac /* AC'97 On-Demand Slot Disable for secondary link (ro) */
293 #define BA0_AODSD2_NDS(x) (1<<((x)-3))
294
295 #define BA0_CFGI 0x04b0 /* Configure Interface (EEPROM interface) */
296 #define BA0_SLT12M2 0x04dc /* Slot 12 Monitor Register 2 for secondary AC-link */
297 #define BA0_ACSTS2 0x04e4 /* AC'97 Status Register 2 */
298 #define BA0_ACISV2 0x04f4 /* AC'97 Input Slot Valid Register 2 */
299 #define BA0_ACSAD2 0x04f8 /* AC'97 Status Address Register 2 */
300 #define BA0_ACSDA2 0x04fc /* AC'97 Status Data Register 2 */
301 #define BA0_FMSR 0x0730 /* FM Synthesis Status (ro) */
302 #define BA0_B0AP 0x0730 /* FM Bank 0 Address Port (wo) */
303 #define BA0_FMDP 0x0734 /* FM Data Port */
304 #define BA0_B1AP 0x0738 /* FM Bank 1 Address Port */
305 #define BA0_B1DP 0x073c /* FM Bank 1 Data Port */
306
307 #define BA0_SSPM 0x0740 /* Sound System Power Management */
308 #define BA0_SSPM_MIXEN (1<<6) /* Playback SRC + FM/Wavetable MIX */
309 #define BA0_SSPM_CSRCEN (1<<5) /* Capture Sample Rate Converter Enable */
310 #define BA0_SSPM_PSRCEN (1<<4) /* Playback Sample Rate Converter Enable */
311 #define BA0_SSPM_JSEN (1<<3) /* Joystick Enable */
312 #define BA0_SSPM_ACLEN (1<<2) /* Serial Port Engine and AC-Link Enable */
313 #define BA0_SSPM_FMEN (1<<1) /* FM Synthesis Block Enable */
314
315 #define BA0_DACSR 0x0744 /* DAC Sample Rate - Playback SRC */
316 #define BA0_ADCSR 0x0748 /* ADC Sample Rate - Capture SRC */
317
318 #define BA0_SSCR 0x074c /* Sound System Control Register */
319 #define BA0_SSCR_HVS1 (1<<23) /* Hardwave Volume Step (0=1,1=2) */
320 #define BA0_SSCR_MVCS (1<<19) /* Master Volume Codec Select */
321 #define BA0_SSCR_MVLD (1<<18) /* Master Volume Line Out Disable */
322 #define BA0_SSCR_MVAD (1<<17) /* Master Volume Alternate Out Disable */
323 #define BA0_SSCR_MVMD (1<<16) /* Master Volume Mono Out Disable */
324 #define BA0_SSCR_XLPSRC (1<<8) /* External SRC Loopback Mode */
325 #define BA0_SSCR_LPSRC (1<<7) /* SRC Loopback Mode */
326 #define BA0_SSCR_CDTX (1<<5) /* CD Transfer Data */
327 #define BA0_SSCR_HVC (1<<3) /* Harware Volume Control Enable */
328
329 #define BA0_FMLVC 0x0754 /* FM Synthesis Left Volume Control */
330 #define BA0_FMRVC 0x0758 /* FM Synthesis Right Volume Control */
331 #define BA0_SRCSA 0x075c /* SRC Slot Assignments */
332 #define BA0_PPLVC 0x0760 /* PCM Playback Left Volume Control */
333 #define BA0_PPRVC 0x0764 /* PCM Playback Right Volume Control */
334 #define BA0_PASR 0x0768 /* playback sample rate */
335 #define BA0_CASR 0x076C /* capture sample rate */
336
337 /* Source Slot Numbers - Playback */
338 #define SRCSLOT_LEFT_PCM_PLAYBACK 0
339 #define SRCSLOT_RIGHT_PCM_PLAYBACK 1
340 #define SRCSLOT_PHONE_LINE_1_DAC 2
341 #define SRCSLOT_CENTER_PCM_PLAYBACK 3
342 #define SRCSLOT_LEFT_SURROUND_PCM_PLAYBACK 4
343 #define SRCSLOT_RIGHT_SURROUND_PCM_PLAYBACK 5
344 #define SRCSLOT_LFE_PCM_PLAYBACK 6
345 #define SRCSLOT_PHONE_LINE_2_DAC 7
346 #define SRCSLOT_HEADSET_DAC 8
347 #define SRCSLOT_LEFT_WT 29 /* invalid for BA0_SRCSA */
348 #define SRCSLOT_RIGHT_WT 30 /* invalid for BA0_SRCSA */
349
350 /* Source Slot Numbers - Capture */
351 #define SRCSLOT_LEFT_PCM_RECORD 10
352 #define SRCSLOT_RIGHT_PCM_RECORD 11
353 #define SRCSLOT_PHONE_LINE_1_ADC 12
354 #define SRCSLOT_MIC_ADC 13
355 #define SRCSLOT_PHONE_LINE_2_ADC 17
356 #define SRCSLOT_HEADSET_ADC 18
357 #define SRCSLOT_SECONDARY_LEFT_PCM_RECORD 20
358 #define SRCSLOT_SECONDARY_RIGHT_PCM_RECORD 21
359 #define SRCSLOT_SECONDARY_PHONE_LINE_1_ADC 22
360 #define SRCSLOT_SECONDARY_MIC_ADC 23
361 #define SRCSLOT_SECONDARY_PHONE_LINE_2_ADC 27
362 #define SRCSLOT_SECONDARY_HEADSET_ADC 28
363
364 /* Source Slot Numbers - Others */
365 #define SRCSLOT_POWER_DOWN 31
366
367 /* MIDI modes */
368 #define CS4281_MODE_OUTPUT (1<<0)
369 #define CS4281_MODE_INPUT (1<<1)
370
371 /* joystick bits */
372 /* Bits for JSPT */
373 #define JSPT_CAX 0x00000001
374 #define JSPT_CAY 0x00000002
375 #define JSPT_CBX 0x00000004
376 #define JSPT_CBY 0x00000008
377 #define JSPT_BA1 0x00000010
378 #define JSPT_BA2 0x00000020
379 #define JSPT_BB1 0x00000040
380 #define JSPT_BB2 0x00000080
381
382 /* Bits for JSCTL */
383 #define JSCTL_SP_MASK 0x00000003
384 #define JSCTL_SP_SLOW 0x00000000
385 #define JSCTL_SP_MEDIUM_SLOW 0x00000001
386 #define JSCTL_SP_MEDIUM_FAST 0x00000002
387 #define JSCTL_SP_FAST 0x00000003
388 #define JSCTL_ARE 0x00000004
389
390 /* Data register pairs masks */
391 #define JSC1_Y1V_MASK 0x0000FFFF
392 #define JSC1_X1V_MASK 0xFFFF0000
393 #define JSC1_Y1V_SHIFT 0
394 #define JSC1_X1V_SHIFT 16
395 #define JSC2_Y2V_MASK 0x0000FFFF
396 #define JSC2_X2V_MASK 0xFFFF0000
397 #define JSC2_Y2V_SHIFT 0
398 #define JSC2_X2V_SHIFT 16
399
400 /* JS GPIO */
401 #define JSIO_DAX 0x00000001
402 #define JSIO_DAY 0x00000002
403 #define JSIO_DBX 0x00000004
404 #define JSIO_DBY 0x00000008
405 #define JSIO_AXOE 0x00000010
406 #define JSIO_AYOE 0x00000020
407 #define JSIO_BXOE 0x00000040
408 #define JSIO_BYOE 0x00000080
409
410 /*
411 *
412 */
413
414 struct cs4281_dma {
415 struct snd_pcm_substream *substream;
416 unsigned int regDBA; /* offset to DBA register */
417 unsigned int regDCA; /* offset to DCA register */
418 unsigned int regDBC; /* offset to DBC register */
419 unsigned int regDCC; /* offset to DCC register */
420 unsigned int regDMR; /* offset to DMR register */
421 unsigned int regDCR; /* offset to DCR register */
422 unsigned int regHDSR; /* offset to HDSR register */
423 unsigned int regFCR; /* offset to FCR register */
424 unsigned int regFSIC; /* offset to FSIC register */
425 unsigned int valDMR; /* DMA mode */
426 unsigned int valDCR; /* DMA command */
427 unsigned int valFCR; /* FIFO control */
428 unsigned int fifo_offset; /* FIFO offset within BA1 */
429 unsigned char left_slot; /* FIFO left slot */
430 unsigned char right_slot; /* FIFO right slot */
431 int frag; /* period number */
432 };
433
434 #define SUSPEND_REGISTERS 20
435
436 struct cs4281 {
437 int irq;
438
439 void __iomem *ba0; /* virtual (accessible) address */
440 void __iomem *ba1; /* virtual (accessible) address */
441 unsigned long ba0_addr;
442 unsigned long ba1_addr;
443
444 int dual_codec;
445
446 struct snd_ac97_bus *ac97_bus;
447 struct snd_ac97 *ac97;
448 struct snd_ac97 *ac97_secondary;
449
450 struct pci_dev *pci;
451 struct snd_card *card;
452 struct snd_pcm *pcm;
453 struct snd_rawmidi *rmidi;
454 struct snd_rawmidi_substream *midi_input;
455 struct snd_rawmidi_substream *midi_output;
456
457 struct cs4281_dma dma[4];
458
459 unsigned char src_left_play_slot;
460 unsigned char src_right_play_slot;
461 unsigned char src_left_rec_slot;
462 unsigned char src_right_rec_slot;
463
464 unsigned int spurious_dhtc_irq;
465 unsigned int spurious_dtc_irq;
466
467 spinlock_t reg_lock;
468 unsigned int midcr;
469 unsigned int uartm;
470
471 struct gameport *gameport;
472
473 u32 suspend_regs[SUSPEND_REGISTERS];
474 };
475
476 static irqreturn_t snd_cs4281_interrupt(int irq, void *dev_id);
477
478 static const struct pci_device_id snd_cs4281_ids[] = {
479 { PCI_VDEVICE(CIRRUS, 0x6005), 0, }, /* CS4281 */
480 { 0, }
481 };
482
483 MODULE_DEVICE_TABLE(pci, snd_cs4281_ids);
484
485 /*
486 * constants
487 */
488
489 #define CS4281_FIFO_SIZE 32
490
491 /*
492 * common I/O routines
493 */
494
snd_cs4281_pokeBA0(struct cs4281 * chip,unsigned long offset,unsigned int val)495 static inline void snd_cs4281_pokeBA0(struct cs4281 *chip, unsigned long offset,
496 unsigned int val)
497 {
498 writel(val, chip->ba0 + offset);
499 }
500
snd_cs4281_peekBA0(struct cs4281 * chip,unsigned long offset)501 static inline unsigned int snd_cs4281_peekBA0(struct cs4281 *chip, unsigned long offset)
502 {
503 return readl(chip->ba0 + offset);
504 }
505
snd_cs4281_ac97_write(struct snd_ac97 * ac97,unsigned short reg,unsigned short val)506 static void snd_cs4281_ac97_write(struct snd_ac97 *ac97,
507 unsigned short reg, unsigned short val)
508 {
509 /*
510 * 1. Write ACCAD = Command Address Register = 46Ch for AC97 register address
511 * 2. Write ACCDA = Command Data Register = 470h for data to write to AC97
512 * 3. Write ACCTL = Control Register = 460h for initiating the write
513 * 4. Read ACCTL = 460h, DCV should be reset by now and 460h = 07h
514 * 5. if DCV not cleared, break and return error
515 */
516 struct cs4281 *chip = ac97->private_data;
517 int count;
518
519 /*
520 * Setup the AC97 control registers on the CS461x to send the
521 * appropriate command to the AC97 to perform the read.
522 * ACCAD = Command Address Register = 46Ch
523 * ACCDA = Command Data Register = 470h
524 * ACCTL = Control Register = 460h
525 * set DCV - will clear when process completed
526 * reset CRW - Write command
527 * set VFRM - valid frame enabled
528 * set ESYN - ASYNC generation enabled
529 * set RSTN - ARST# inactive, AC97 codec not reset
530 */
531 snd_cs4281_pokeBA0(chip, BA0_ACCAD, reg);
532 snd_cs4281_pokeBA0(chip, BA0_ACCDA, val);
533 snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_DCV | BA0_ACCTL_VFRM |
534 BA0_ACCTL_ESYN | (ac97->num ? BA0_ACCTL_TC : 0));
535 for (count = 0; count < 2000; count++) {
536 /*
537 * First, we want to wait for a short time.
538 */
539 udelay(10);
540 /*
541 * Now, check to see if the write has completed.
542 * ACCTL = 460h, DCV should be reset by now and 460h = 07h
543 */
544 if (!(snd_cs4281_peekBA0(chip, BA0_ACCTL) & BA0_ACCTL_DCV)) {
545 return;
546 }
547 }
548 dev_err(chip->card->dev,
549 "AC'97 write problem, reg = 0x%x, val = 0x%x\n", reg, val);
550 }
551
snd_cs4281_ac97_read(struct snd_ac97 * ac97,unsigned short reg)552 static unsigned short snd_cs4281_ac97_read(struct snd_ac97 *ac97,
553 unsigned short reg)
554 {
555 struct cs4281 *chip = ac97->private_data;
556 int count;
557 unsigned short result;
558 // FIXME: volatile is necessary in the following due to a bug of
559 // some gcc versions
560 volatile int ac97_num = ((volatile struct snd_ac97 *)ac97)->num;
561
562 /*
563 * 1. Write ACCAD = Command Address Register = 46Ch for AC97 register address
564 * 2. Write ACCDA = Command Data Register = 470h for data to write to AC97
565 * 3. Write ACCTL = Control Register = 460h for initiating the write
566 * 4. Read ACCTL = 460h, DCV should be reset by now and 460h = 17h
567 * 5. if DCV not cleared, break and return error
568 * 6. Read ACSTS = Status Register = 464h, check VSTS bit
569 */
570
571 snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSDA2 : BA0_ACSDA);
572
573 /*
574 * Setup the AC97 control registers on the CS461x to send the
575 * appropriate command to the AC97 to perform the read.
576 * ACCAD = Command Address Register = 46Ch
577 * ACCDA = Command Data Register = 470h
578 * ACCTL = Control Register = 460h
579 * set DCV - will clear when process completed
580 * set CRW - Read command
581 * set VFRM - valid frame enabled
582 * set ESYN - ASYNC generation enabled
583 * set RSTN - ARST# inactive, AC97 codec not reset
584 */
585
586 snd_cs4281_pokeBA0(chip, BA0_ACCAD, reg);
587 snd_cs4281_pokeBA0(chip, BA0_ACCDA, 0);
588 snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_DCV | BA0_ACCTL_CRW |
589 BA0_ACCTL_VFRM | BA0_ACCTL_ESYN |
590 (ac97_num ? BA0_ACCTL_TC : 0));
591
592
593 /*
594 * Wait for the read to occur.
595 */
596 for (count = 0; count < 500; count++) {
597 /*
598 * First, we want to wait for a short time.
599 */
600 udelay(10);
601 /*
602 * Now, check to see if the read has completed.
603 * ACCTL = 460h, DCV should be reset by now and 460h = 17h
604 */
605 if (!(snd_cs4281_peekBA0(chip, BA0_ACCTL) & BA0_ACCTL_DCV))
606 goto __ok1;
607 }
608
609 dev_err(chip->card->dev,
610 "AC'97 read problem (ACCTL_DCV), reg = 0x%x\n", reg);
611 result = 0xffff;
612 goto __end;
613
614 __ok1:
615 /*
616 * Wait for the valid status bit to go active.
617 */
618 for (count = 0; count < 100; count++) {
619 /*
620 * Read the AC97 status register.
621 * ACSTS = Status Register = 464h
622 * VSTS - Valid Status
623 */
624 if (snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSTS2 : BA0_ACSTS) & BA0_ACSTS_VSTS)
625 goto __ok2;
626 udelay(10);
627 }
628
629 dev_err(chip->card->dev,
630 "AC'97 read problem (ACSTS_VSTS), reg = 0x%x\n", reg);
631 result = 0xffff;
632 goto __end;
633
634 __ok2:
635 /*
636 * Read the data returned from the AC97 register.
637 * ACSDA = Status Data Register = 474h
638 */
639 result = snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSDA2 : BA0_ACSDA);
640
641 __end:
642 return result;
643 }
644
645 /*
646 * PCM part
647 */
648
snd_cs4281_trigger(struct snd_pcm_substream * substream,int cmd)649 static int snd_cs4281_trigger(struct snd_pcm_substream *substream, int cmd)
650 {
651 struct cs4281_dma *dma = substream->runtime->private_data;
652 struct cs4281 *chip = snd_pcm_substream_chip(substream);
653
654 guard(spinlock)(&chip->reg_lock);
655 switch (cmd) {
656 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
657 dma->valDCR |= BA0_DCR_MSK;
658 dma->valFCR |= BA0_FCR_FEN;
659 break;
660 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
661 dma->valDCR &= ~BA0_DCR_MSK;
662 dma->valFCR &= ~BA0_FCR_FEN;
663 break;
664 case SNDRV_PCM_TRIGGER_START:
665 case SNDRV_PCM_TRIGGER_RESUME:
666 snd_cs4281_pokeBA0(chip, dma->regDMR, dma->valDMR & ~BA0_DMR_DMA);
667 dma->valDMR |= BA0_DMR_DMA;
668 dma->valDCR &= ~BA0_DCR_MSK;
669 dma->valFCR |= BA0_FCR_FEN;
670 break;
671 case SNDRV_PCM_TRIGGER_STOP:
672 case SNDRV_PCM_TRIGGER_SUSPEND:
673 dma->valDMR &= ~(BA0_DMR_DMA|BA0_DMR_POLL);
674 dma->valDCR |= BA0_DCR_MSK;
675 dma->valFCR &= ~BA0_FCR_FEN;
676 /* Leave wave playback FIFO enabled for FM */
677 if (dma->regFCR != BA0_FCR0)
678 dma->valFCR &= ~BA0_FCR_FEN;
679 break;
680 default:
681 return -EINVAL;
682 }
683 snd_cs4281_pokeBA0(chip, dma->regDMR, dma->valDMR);
684 snd_cs4281_pokeBA0(chip, dma->regFCR, dma->valFCR);
685 snd_cs4281_pokeBA0(chip, dma->regDCR, dma->valDCR);
686 return 0;
687 }
688
snd_cs4281_rate(unsigned int rate,unsigned int * real_rate)689 static unsigned int snd_cs4281_rate(unsigned int rate, unsigned int *real_rate)
690 {
691 unsigned int val;
692
693 if (real_rate)
694 *real_rate = rate;
695 /* special "hardcoded" rates */
696 switch (rate) {
697 case 8000: return 5;
698 case 11025: return 4;
699 case 16000: return 3;
700 case 22050: return 2;
701 case 44100: return 1;
702 case 48000: return 0;
703 default:
704 break;
705 }
706 val = 1536000 / rate;
707 if (real_rate)
708 *real_rate = 1536000 / val;
709 return val;
710 }
711
snd_cs4281_mode(struct cs4281 * chip,struct cs4281_dma * dma,struct snd_pcm_runtime * runtime,int capture,int src)712 static void snd_cs4281_mode(struct cs4281 *chip, struct cs4281_dma *dma,
713 struct snd_pcm_runtime *runtime,
714 int capture, int src)
715 {
716 int rec_mono;
717
718 dma->valDMR = BA0_DMR_TYPE_SINGLE | BA0_DMR_AUTO |
719 (capture ? BA0_DMR_TR_WRITE : BA0_DMR_TR_READ);
720 if (runtime->channels == 1)
721 dma->valDMR |= BA0_DMR_MONO;
722 if (snd_pcm_format_unsigned(runtime->format) > 0)
723 dma->valDMR |= BA0_DMR_USIGN;
724 if (snd_pcm_format_big_endian(runtime->format) > 0)
725 dma->valDMR |= BA0_DMR_BEND;
726 switch (snd_pcm_format_width(runtime->format)) {
727 case 8: dma->valDMR |= BA0_DMR_SIZE8;
728 if (runtime->channels == 1)
729 dma->valDMR |= BA0_DMR_SWAPC;
730 break;
731 case 32: dma->valDMR |= BA0_DMR_SIZE20; break;
732 }
733 dma->frag = 0; /* for workaround */
734 dma->valDCR = BA0_DCR_TCIE | BA0_DCR_MSK;
735 if (runtime->buffer_size != runtime->period_size)
736 dma->valDCR |= BA0_DCR_HTCIE;
737 /* Initialize DMA */
738 snd_cs4281_pokeBA0(chip, dma->regDBA, runtime->dma_addr);
739 snd_cs4281_pokeBA0(chip, dma->regDBC, runtime->buffer_size - 1);
740 rec_mono = (chip->dma[1].valDMR & BA0_DMR_MONO) == BA0_DMR_MONO;
741 snd_cs4281_pokeBA0(chip, BA0_SRCSA, (chip->src_left_play_slot << 0) |
742 (chip->src_right_play_slot << 8) |
743 (chip->src_left_rec_slot << 16) |
744 ((rec_mono ? 31 : chip->src_right_rec_slot) << 24));
745 if (!src)
746 goto __skip_src;
747 if (!capture) {
748 if (dma->left_slot == chip->src_left_play_slot) {
749 unsigned int val = snd_cs4281_rate(runtime->rate, NULL);
750 snd_BUG_ON(dma->right_slot != chip->src_right_play_slot);
751 snd_cs4281_pokeBA0(chip, BA0_DACSR, val);
752 }
753 } else {
754 if (dma->left_slot == chip->src_left_rec_slot) {
755 unsigned int val = snd_cs4281_rate(runtime->rate, NULL);
756 snd_BUG_ON(dma->right_slot != chip->src_right_rec_slot);
757 snd_cs4281_pokeBA0(chip, BA0_ADCSR, val);
758 }
759 }
760 __skip_src:
761 /* Deactivate wave playback FIFO before changing slot assignments */
762 if (dma->regFCR == BA0_FCR0)
763 snd_cs4281_pokeBA0(chip, dma->regFCR, snd_cs4281_peekBA0(chip, dma->regFCR) & ~BA0_FCR_FEN);
764 /* Initialize FIFO */
765 dma->valFCR = BA0_FCR_LS(dma->left_slot) |
766 BA0_FCR_RS(capture && (dma->valDMR & BA0_DMR_MONO) ? 31 : dma->right_slot) |
767 BA0_FCR_SZ(CS4281_FIFO_SIZE) |
768 BA0_FCR_OF(dma->fifo_offset);
769 snd_cs4281_pokeBA0(chip, dma->regFCR, dma->valFCR | (capture ? BA0_FCR_PSH : 0));
770 /* Activate FIFO again for FM playback */
771 if (dma->regFCR == BA0_FCR0)
772 snd_cs4281_pokeBA0(chip, dma->regFCR, dma->valFCR | BA0_FCR_FEN);
773 /* Clear FIFO Status and Interrupt Control Register */
774 snd_cs4281_pokeBA0(chip, dma->regFSIC, 0);
775 }
776
snd_cs4281_playback_prepare(struct snd_pcm_substream * substream)777 static int snd_cs4281_playback_prepare(struct snd_pcm_substream *substream)
778 {
779 struct snd_pcm_runtime *runtime = substream->runtime;
780 struct cs4281_dma *dma = runtime->private_data;
781 struct cs4281 *chip = snd_pcm_substream_chip(substream);
782
783 guard(spinlock_irq)(&chip->reg_lock);
784 snd_cs4281_mode(chip, dma, runtime, 0, 1);
785 return 0;
786 }
787
snd_cs4281_capture_prepare(struct snd_pcm_substream * substream)788 static int snd_cs4281_capture_prepare(struct snd_pcm_substream *substream)
789 {
790 struct snd_pcm_runtime *runtime = substream->runtime;
791 struct cs4281_dma *dma = runtime->private_data;
792 struct cs4281 *chip = snd_pcm_substream_chip(substream);
793
794 guard(spinlock_irq)(&chip->reg_lock);
795 snd_cs4281_mode(chip, dma, runtime, 1, 1);
796 return 0;
797 }
798
snd_cs4281_pointer(struct snd_pcm_substream * substream)799 static snd_pcm_uframes_t snd_cs4281_pointer(struct snd_pcm_substream *substream)
800 {
801 struct snd_pcm_runtime *runtime = substream->runtime;
802 struct cs4281_dma *dma = runtime->private_data;
803 struct cs4281 *chip = snd_pcm_substream_chip(substream);
804
805 /*
806 dev_dbg(chip->card->dev,
807 "DCC = 0x%x, buffer_size = 0x%x, jiffies = %li\n",
808 snd_cs4281_peekBA0(chip, dma->regDCC), runtime->buffer_size,
809 jiffies);
810 */
811 return runtime->buffer_size -
812 snd_cs4281_peekBA0(chip, dma->regDCC) - 1;
813 }
814
815 static const struct snd_pcm_hardware snd_cs4281_playback =
816 {
817 .info = SNDRV_PCM_INFO_MMAP |
818 SNDRV_PCM_INFO_INTERLEAVED |
819 SNDRV_PCM_INFO_MMAP_VALID |
820 SNDRV_PCM_INFO_PAUSE |
821 SNDRV_PCM_INFO_RESUME,
822 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
823 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_S16_LE |
824 SNDRV_PCM_FMTBIT_U16_BE | SNDRV_PCM_FMTBIT_S16_BE |
825 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_S32_LE |
826 SNDRV_PCM_FMTBIT_U32_BE | SNDRV_PCM_FMTBIT_S32_BE,
827 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
828 .rate_min = 4000,
829 .rate_max = 48000,
830 .channels_min = 1,
831 .channels_max = 2,
832 .buffer_bytes_max = (512*1024),
833 .period_bytes_min = 64,
834 .period_bytes_max = (512*1024),
835 .periods_min = 1,
836 .periods_max = 2,
837 .fifo_size = CS4281_FIFO_SIZE,
838 };
839
840 static const struct snd_pcm_hardware snd_cs4281_capture =
841 {
842 .info = SNDRV_PCM_INFO_MMAP |
843 SNDRV_PCM_INFO_INTERLEAVED |
844 SNDRV_PCM_INFO_MMAP_VALID |
845 SNDRV_PCM_INFO_PAUSE |
846 SNDRV_PCM_INFO_RESUME,
847 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
848 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_S16_LE |
849 SNDRV_PCM_FMTBIT_U16_BE | SNDRV_PCM_FMTBIT_S16_BE |
850 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_S32_LE |
851 SNDRV_PCM_FMTBIT_U32_BE | SNDRV_PCM_FMTBIT_S32_BE,
852 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
853 .rate_min = 4000,
854 .rate_max = 48000,
855 .channels_min = 1,
856 .channels_max = 2,
857 .buffer_bytes_max = (512*1024),
858 .period_bytes_min = 64,
859 .period_bytes_max = (512*1024),
860 .periods_min = 1,
861 .periods_max = 2,
862 .fifo_size = CS4281_FIFO_SIZE,
863 };
864
snd_cs4281_playback_open(struct snd_pcm_substream * substream)865 static int snd_cs4281_playback_open(struct snd_pcm_substream *substream)
866 {
867 struct cs4281 *chip = snd_pcm_substream_chip(substream);
868 struct snd_pcm_runtime *runtime = substream->runtime;
869 struct cs4281_dma *dma;
870
871 dma = &chip->dma[0];
872 dma->substream = substream;
873 dma->left_slot = 0;
874 dma->right_slot = 1;
875 runtime->private_data = dma;
876 runtime->hw = snd_cs4281_playback;
877 /* should be detected from the AC'97 layer, but it seems
878 that although CS4297A rev B reports 18-bit ADC resolution,
879 samples are 20-bit */
880 snd_pcm_hw_constraint_msbits(runtime, 0, 32, 20);
881 return 0;
882 }
883
snd_cs4281_capture_open(struct snd_pcm_substream * substream)884 static int snd_cs4281_capture_open(struct snd_pcm_substream *substream)
885 {
886 struct cs4281 *chip = snd_pcm_substream_chip(substream);
887 struct snd_pcm_runtime *runtime = substream->runtime;
888 struct cs4281_dma *dma;
889
890 dma = &chip->dma[1];
891 dma->substream = substream;
892 dma->left_slot = 10;
893 dma->right_slot = 11;
894 runtime->private_data = dma;
895 runtime->hw = snd_cs4281_capture;
896 /* should be detected from the AC'97 layer, but it seems
897 that although CS4297A rev B reports 18-bit ADC resolution,
898 samples are 20-bit */
899 snd_pcm_hw_constraint_msbits(runtime, 0, 32, 20);
900 return 0;
901 }
902
snd_cs4281_playback_close(struct snd_pcm_substream * substream)903 static int snd_cs4281_playback_close(struct snd_pcm_substream *substream)
904 {
905 struct cs4281_dma *dma = substream->runtime->private_data;
906
907 dma->substream = NULL;
908 return 0;
909 }
910
snd_cs4281_capture_close(struct snd_pcm_substream * substream)911 static int snd_cs4281_capture_close(struct snd_pcm_substream *substream)
912 {
913 struct cs4281_dma *dma = substream->runtime->private_data;
914
915 dma->substream = NULL;
916 return 0;
917 }
918
919 static const struct snd_pcm_ops snd_cs4281_playback_ops = {
920 .open = snd_cs4281_playback_open,
921 .close = snd_cs4281_playback_close,
922 .prepare = snd_cs4281_playback_prepare,
923 .trigger = snd_cs4281_trigger,
924 .pointer = snd_cs4281_pointer,
925 };
926
927 static const struct snd_pcm_ops snd_cs4281_capture_ops = {
928 .open = snd_cs4281_capture_open,
929 .close = snd_cs4281_capture_close,
930 .prepare = snd_cs4281_capture_prepare,
931 .trigger = snd_cs4281_trigger,
932 .pointer = snd_cs4281_pointer,
933 };
934
snd_cs4281_pcm(struct cs4281 * chip,int device)935 static int snd_cs4281_pcm(struct cs4281 *chip, int device)
936 {
937 struct snd_pcm *pcm;
938 int err;
939
940 err = snd_pcm_new(chip->card, "CS4281", device, 1, 1, &pcm);
941 if (err < 0)
942 return err;
943
944 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_cs4281_playback_ops);
945 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cs4281_capture_ops);
946
947 pcm->private_data = chip;
948 pcm->info_flags = 0;
949 strscpy(pcm->name, "CS4281");
950 chip->pcm = pcm;
951
952 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
953 64*1024, 512*1024);
954
955 return 0;
956 }
957
958 /*
959 * Mixer section
960 */
961
962 #define CS_VOL_MASK 0x1f
963
snd_cs4281_info_volume(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)964 static int snd_cs4281_info_volume(struct snd_kcontrol *kcontrol,
965 struct snd_ctl_elem_info *uinfo)
966 {
967 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
968 uinfo->count = 2;
969 uinfo->value.integer.min = 0;
970 uinfo->value.integer.max = CS_VOL_MASK;
971 return 0;
972 }
973
snd_cs4281_get_volume(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)974 static int snd_cs4281_get_volume(struct snd_kcontrol *kcontrol,
975 struct snd_ctl_elem_value *ucontrol)
976 {
977 struct cs4281 *chip = snd_kcontrol_chip(kcontrol);
978 int regL = (kcontrol->private_value >> 16) & 0xffff;
979 int regR = kcontrol->private_value & 0xffff;
980 int volL, volR;
981
982 volL = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regL) & CS_VOL_MASK);
983 volR = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regR) & CS_VOL_MASK);
984
985 ucontrol->value.integer.value[0] = volL;
986 ucontrol->value.integer.value[1] = volR;
987 return 0;
988 }
989
snd_cs4281_put_volume(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)990 static int snd_cs4281_put_volume(struct snd_kcontrol *kcontrol,
991 struct snd_ctl_elem_value *ucontrol)
992 {
993 struct cs4281 *chip = snd_kcontrol_chip(kcontrol);
994 int change = 0;
995 int regL = (kcontrol->private_value >> 16) & 0xffff;
996 int regR = kcontrol->private_value & 0xffff;
997 int volL, volR;
998
999 volL = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regL) & CS_VOL_MASK);
1000 volR = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regR) & CS_VOL_MASK);
1001
1002 if (ucontrol->value.integer.value[0] != volL) {
1003 volL = CS_VOL_MASK - (ucontrol->value.integer.value[0] & CS_VOL_MASK);
1004 snd_cs4281_pokeBA0(chip, regL, volL);
1005 change = 1;
1006 }
1007 if (ucontrol->value.integer.value[1] != volR) {
1008 volR = CS_VOL_MASK - (ucontrol->value.integer.value[1] & CS_VOL_MASK);
1009 snd_cs4281_pokeBA0(chip, regR, volR);
1010 change = 1;
1011 }
1012 return change;
1013 }
1014
1015 static const DECLARE_TLV_DB_SCALE(db_scale_dsp, -4650, 150, 0);
1016
1017 static const struct snd_kcontrol_new snd_cs4281_fm_vol =
1018 {
1019 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1020 .name = "Synth Playback Volume",
1021 .info = snd_cs4281_info_volume,
1022 .get = snd_cs4281_get_volume,
1023 .put = snd_cs4281_put_volume,
1024 .private_value = ((BA0_FMLVC << 16) | BA0_FMRVC),
1025 .tlv = { .p = db_scale_dsp },
1026 };
1027
1028 static const struct snd_kcontrol_new snd_cs4281_pcm_vol =
1029 {
1030 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1031 .name = "PCM Stream Playback Volume",
1032 .info = snd_cs4281_info_volume,
1033 .get = snd_cs4281_get_volume,
1034 .put = snd_cs4281_put_volume,
1035 .private_value = ((BA0_PPLVC << 16) | BA0_PPRVC),
1036 .tlv = { .p = db_scale_dsp },
1037 };
1038
snd_cs4281_mixer_free_ac97_bus(struct snd_ac97_bus * bus)1039 static void snd_cs4281_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1040 {
1041 struct cs4281 *chip = bus->private_data;
1042 chip->ac97_bus = NULL;
1043 }
1044
snd_cs4281_mixer_free_ac97(struct snd_ac97 * ac97)1045 static void snd_cs4281_mixer_free_ac97(struct snd_ac97 *ac97)
1046 {
1047 struct cs4281 *chip = ac97->private_data;
1048 if (ac97->num)
1049 chip->ac97_secondary = NULL;
1050 else
1051 chip->ac97 = NULL;
1052 }
1053
snd_cs4281_mixer(struct cs4281 * chip)1054 static int snd_cs4281_mixer(struct cs4281 *chip)
1055 {
1056 struct snd_card *card = chip->card;
1057 struct snd_ac97_template ac97;
1058 int err;
1059 static const struct snd_ac97_bus_ops ops = {
1060 .write = snd_cs4281_ac97_write,
1061 .read = snd_cs4281_ac97_read,
1062 };
1063
1064 err = snd_ac97_bus(card, 0, &ops, chip, &chip->ac97_bus);
1065 if (err < 0)
1066 return err;
1067 chip->ac97_bus->private_free = snd_cs4281_mixer_free_ac97_bus;
1068
1069 memset(&ac97, 0, sizeof(ac97));
1070 ac97.private_data = chip;
1071 ac97.private_free = snd_cs4281_mixer_free_ac97;
1072 err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97);
1073 if (err < 0)
1074 return err;
1075 if (chip->dual_codec) {
1076 ac97.num = 1;
1077 err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97_secondary);
1078 if (err < 0)
1079 return err;
1080 }
1081 err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4281_fm_vol, chip));
1082 if (err < 0)
1083 return err;
1084 err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4281_pcm_vol, chip));
1085 if (err < 0)
1086 return err;
1087 return 0;
1088 }
1089
1090
1091 /*
1092 * proc interface
1093 */
1094
snd_cs4281_proc_read(struct snd_info_entry * entry,struct snd_info_buffer * buffer)1095 static void snd_cs4281_proc_read(struct snd_info_entry *entry,
1096 struct snd_info_buffer *buffer)
1097 {
1098 struct cs4281 *chip = entry->private_data;
1099
1100 snd_iprintf(buffer, "Cirrus Logic CS4281\n\n");
1101 snd_iprintf(buffer, "Spurious half IRQs : %u\n", chip->spurious_dhtc_irq);
1102 snd_iprintf(buffer, "Spurious end IRQs : %u\n", chip->spurious_dtc_irq);
1103 }
1104
snd_cs4281_BA0_read(struct snd_info_entry * entry,void * file_private_data,struct file * file,char __user * buf,size_t count,loff_t pos)1105 static ssize_t snd_cs4281_BA0_read(struct snd_info_entry *entry,
1106 void *file_private_data,
1107 struct file *file, char __user *buf,
1108 size_t count, loff_t pos)
1109 {
1110 struct cs4281 *chip = entry->private_data;
1111
1112 if (copy_to_user_fromio(buf, chip->ba0 + pos, count))
1113 return -EFAULT;
1114 return count;
1115 }
1116
snd_cs4281_BA1_read(struct snd_info_entry * entry,void * file_private_data,struct file * file,char __user * buf,size_t count,loff_t pos)1117 static ssize_t snd_cs4281_BA1_read(struct snd_info_entry *entry,
1118 void *file_private_data,
1119 struct file *file, char __user *buf,
1120 size_t count, loff_t pos)
1121 {
1122 struct cs4281 *chip = entry->private_data;
1123
1124 if (copy_to_user_fromio(buf, chip->ba1 + pos, count))
1125 return -EFAULT;
1126 return count;
1127 }
1128
1129 static const struct snd_info_entry_ops snd_cs4281_proc_ops_BA0 = {
1130 .read = snd_cs4281_BA0_read,
1131 };
1132
1133 static const struct snd_info_entry_ops snd_cs4281_proc_ops_BA1 = {
1134 .read = snd_cs4281_BA1_read,
1135 };
1136
snd_cs4281_proc_init(struct cs4281 * chip)1137 static void snd_cs4281_proc_init(struct cs4281 *chip)
1138 {
1139 struct snd_info_entry *entry;
1140
1141 snd_card_ro_proc_new(chip->card, "cs4281", chip, snd_cs4281_proc_read);
1142 if (! snd_card_proc_new(chip->card, "cs4281_BA0", &entry)) {
1143 entry->content = SNDRV_INFO_CONTENT_DATA;
1144 entry->private_data = chip;
1145 entry->c.ops = &snd_cs4281_proc_ops_BA0;
1146 entry->size = CS4281_BA0_SIZE;
1147 }
1148 if (! snd_card_proc_new(chip->card, "cs4281_BA1", &entry)) {
1149 entry->content = SNDRV_INFO_CONTENT_DATA;
1150 entry->private_data = chip;
1151 entry->c.ops = &snd_cs4281_proc_ops_BA1;
1152 entry->size = CS4281_BA1_SIZE;
1153 }
1154 }
1155
1156 /*
1157 * joystick support
1158 */
1159
1160 #if IS_REACHABLE(CONFIG_GAMEPORT)
1161
snd_cs4281_gameport_trigger(struct gameport * gameport)1162 static void snd_cs4281_gameport_trigger(struct gameport *gameport)
1163 {
1164 struct cs4281 *chip = gameport_get_port_data(gameport);
1165
1166 if (snd_BUG_ON(!chip))
1167 return;
1168 snd_cs4281_pokeBA0(chip, BA0_JSPT, 0xff);
1169 }
1170
snd_cs4281_gameport_read(struct gameport * gameport)1171 static unsigned char snd_cs4281_gameport_read(struct gameport *gameport)
1172 {
1173 struct cs4281 *chip = gameport_get_port_data(gameport);
1174
1175 if (snd_BUG_ON(!chip))
1176 return 0;
1177 return snd_cs4281_peekBA0(chip, BA0_JSPT);
1178 }
1179
1180 #ifdef COOKED_MODE
snd_cs4281_gameport_cooked_read(struct gameport * gameport,int * axes,int * buttons)1181 static int snd_cs4281_gameport_cooked_read(struct gameport *gameport,
1182 int *axes, int *buttons)
1183 {
1184 struct cs4281 *chip = gameport_get_port_data(gameport);
1185 unsigned js1, js2, jst;
1186
1187 if (snd_BUG_ON(!chip))
1188 return 0;
1189
1190 js1 = snd_cs4281_peekBA0(chip, BA0_JSC1);
1191 js2 = snd_cs4281_peekBA0(chip, BA0_JSC2);
1192 jst = snd_cs4281_peekBA0(chip, BA0_JSPT);
1193
1194 *buttons = (~jst >> 4) & 0x0F;
1195
1196 axes[0] = ((js1 & JSC1_Y1V_MASK) >> JSC1_Y1V_SHIFT) & 0xFFFF;
1197 axes[1] = ((js1 & JSC1_X1V_MASK) >> JSC1_X1V_SHIFT) & 0xFFFF;
1198 axes[2] = ((js2 & JSC2_Y2V_MASK) >> JSC2_Y2V_SHIFT) & 0xFFFF;
1199 axes[3] = ((js2 & JSC2_X2V_MASK) >> JSC2_X2V_SHIFT) & 0xFFFF;
1200
1201 for (jst = 0; jst < 4; ++jst)
1202 if (axes[jst] == 0xFFFF) axes[jst] = -1;
1203 return 0;
1204 }
1205 #else
1206 #define snd_cs4281_gameport_cooked_read NULL
1207 #endif
1208
snd_cs4281_gameport_open(struct gameport * gameport,int mode)1209 static int snd_cs4281_gameport_open(struct gameport *gameport, int mode)
1210 {
1211 switch (mode) {
1212 #ifdef COOKED_MODE
1213 case GAMEPORT_MODE_COOKED:
1214 return 0;
1215 #endif
1216 case GAMEPORT_MODE_RAW:
1217 return 0;
1218 default:
1219 return -1;
1220 }
1221 return 0;
1222 }
1223
snd_cs4281_create_gameport(struct cs4281 * chip)1224 static int snd_cs4281_create_gameport(struct cs4281 *chip)
1225 {
1226 struct gameport *gp;
1227
1228 chip->gameport = gp = gameport_allocate_port();
1229 if (!gp) {
1230 dev_err(chip->card->dev,
1231 "cannot allocate memory for gameport\n");
1232 return -ENOMEM;
1233 }
1234
1235 gameport_set_name(gp, "CS4281 Gameport");
1236 gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1237 gameport_set_dev_parent(gp, &chip->pci->dev);
1238 gp->open = snd_cs4281_gameport_open;
1239 gp->read = snd_cs4281_gameport_read;
1240 gp->trigger = snd_cs4281_gameport_trigger;
1241 gp->cooked_read = snd_cs4281_gameport_cooked_read;
1242 gameport_set_port_data(gp, chip);
1243
1244 snd_cs4281_pokeBA0(chip, BA0_JSIO, 0xFF); // ?
1245 snd_cs4281_pokeBA0(chip, BA0_JSCTL, JSCTL_SP_MEDIUM_SLOW);
1246
1247 gameport_register_port(gp);
1248
1249 return 0;
1250 }
1251
snd_cs4281_free_gameport(struct cs4281 * chip)1252 static void snd_cs4281_free_gameport(struct cs4281 *chip)
1253 {
1254 if (chip->gameport) {
1255 gameport_unregister_port(chip->gameport);
1256 chip->gameport = NULL;
1257 }
1258 }
1259 #else
snd_cs4281_create_gameport(struct cs4281 * chip)1260 static inline int snd_cs4281_create_gameport(struct cs4281 *chip) { return -ENOSYS; }
snd_cs4281_free_gameport(struct cs4281 * chip)1261 static inline void snd_cs4281_free_gameport(struct cs4281 *chip) { }
1262 #endif /* IS_REACHABLE(CONFIG_GAMEPORT) */
1263
snd_cs4281_free(struct snd_card * card)1264 static void snd_cs4281_free(struct snd_card *card)
1265 {
1266 struct cs4281 *chip = card->private_data;
1267
1268 snd_cs4281_free_gameport(chip);
1269
1270 /* Mask interrupts */
1271 snd_cs4281_pokeBA0(chip, BA0_HIMR, 0x7fffffff);
1272 /* Stop the DLL Clock logic. */
1273 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, 0);
1274 /* Sound System Power Management - Turn Everything OFF */
1275 snd_cs4281_pokeBA0(chip, BA0_SSPM, 0);
1276 }
1277
1278 static int snd_cs4281_chip_init(struct cs4281 *chip); /* defined below */
1279
snd_cs4281_create(struct snd_card * card,struct pci_dev * pci,int dual_codec)1280 static int snd_cs4281_create(struct snd_card *card,
1281 struct pci_dev *pci,
1282 int dual_codec)
1283 {
1284 struct cs4281 *chip = card->private_data;
1285 int err;
1286
1287 err = pcim_enable_device(pci);
1288 if (err < 0)
1289 return err;
1290 spin_lock_init(&chip->reg_lock);
1291 chip->card = card;
1292 chip->pci = pci;
1293 chip->irq = -1;
1294 pci_set_master(pci);
1295 if (dual_codec < 0 || dual_codec > 3) {
1296 dev_err(card->dev, "invalid dual_codec option %d\n", dual_codec);
1297 dual_codec = 0;
1298 }
1299 chip->dual_codec = dual_codec;
1300
1301 chip->ba0 = pcim_iomap_region(pci, 0, "CS4281");
1302 if (IS_ERR(chip->ba0))
1303 return PTR_ERR(chip->ba0);
1304 chip->ba0_addr = pci_resource_start(pci, 0);
1305
1306 chip->ba1 = pcim_iomap_region(pci, 1, "CS4281");
1307 if (IS_ERR(chip->ba1))
1308 return PTR_ERR(chip->ba1);
1309 chip->ba1_addr = pci_resource_start(pci, 1);
1310
1311 if (devm_request_irq(&pci->dev, pci->irq, snd_cs4281_interrupt,
1312 IRQF_SHARED, KBUILD_MODNAME, chip)) {
1313 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1314 return -ENOMEM;
1315 }
1316 chip->irq = pci->irq;
1317 card->sync_irq = chip->irq;
1318 card->private_free = snd_cs4281_free;
1319
1320 err = snd_cs4281_chip_init(chip);
1321 if (err)
1322 return err;
1323
1324 snd_cs4281_proc_init(chip);
1325 return 0;
1326 }
1327
snd_cs4281_chip_init(struct cs4281 * chip)1328 static int snd_cs4281_chip_init(struct cs4281 *chip)
1329 {
1330 unsigned int tmp;
1331 unsigned long end_time;
1332 int retry_count = 2;
1333
1334 /* Having EPPMC.FPDN=1 prevent proper chip initialisation */
1335 tmp = snd_cs4281_peekBA0(chip, BA0_EPPMC);
1336 if (tmp & BA0_EPPMC_FPDN)
1337 snd_cs4281_pokeBA0(chip, BA0_EPPMC, tmp & ~BA0_EPPMC_FPDN);
1338
1339 __retry:
1340 tmp = snd_cs4281_peekBA0(chip, BA0_CFLR);
1341 if (tmp != BA0_CFLR_DEFAULT) {
1342 snd_cs4281_pokeBA0(chip, BA0_CFLR, BA0_CFLR_DEFAULT);
1343 tmp = snd_cs4281_peekBA0(chip, BA0_CFLR);
1344 if (tmp != BA0_CFLR_DEFAULT) {
1345 dev_err(chip->card->dev,
1346 "CFLR setup failed (0x%x)\n", tmp);
1347 return -EIO;
1348 }
1349 }
1350
1351 /* Set the 'Configuration Write Protect' register
1352 * to 4281h. Allows vendor-defined configuration
1353 * space between 0e4h and 0ffh to be written. */
1354 snd_cs4281_pokeBA0(chip, BA0_CWPR, 0x4281);
1355
1356 tmp = snd_cs4281_peekBA0(chip, BA0_SERC1);
1357 if (tmp != (BA0_SERC1_SO1EN | BA0_SERC1_AC97)) {
1358 dev_err(chip->card->dev,
1359 "SERC1 AC'97 check failed (0x%x)\n", tmp);
1360 return -EIO;
1361 }
1362 tmp = snd_cs4281_peekBA0(chip, BA0_SERC2);
1363 if (tmp != (BA0_SERC2_SI1EN | BA0_SERC2_AC97)) {
1364 dev_err(chip->card->dev,
1365 "SERC2 AC'97 check failed (0x%x)\n", tmp);
1366 return -EIO;
1367 }
1368
1369 /* Sound System Power Management */
1370 snd_cs4281_pokeBA0(chip, BA0_SSPM, BA0_SSPM_MIXEN | BA0_SSPM_CSRCEN |
1371 BA0_SSPM_PSRCEN | BA0_SSPM_JSEN |
1372 BA0_SSPM_ACLEN | BA0_SSPM_FMEN);
1373
1374 /* Serial Port Power Management */
1375 /* Blast the clock control register to zero so that the
1376 * PLL starts out in a known state, and blast the master serial
1377 * port control register to zero so that the serial ports also
1378 * start out in a known state. */
1379 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, 0);
1380 snd_cs4281_pokeBA0(chip, BA0_SERMC, 0);
1381
1382 /* Make ESYN go to zero to turn off
1383 * the Sync pulse on the AC97 link. */
1384 snd_cs4281_pokeBA0(chip, BA0_ACCTL, 0);
1385 udelay(50);
1386
1387 /* Drive the ARST# pin low for a minimum of 1uS (as defined in the AC97
1388 * spec) and then drive it high. This is done for non AC97 modes since
1389 * there might be logic external to the CS4281 that uses the ARST# line
1390 * for a reset. */
1391 snd_cs4281_pokeBA0(chip, BA0_SPMC, 0);
1392 udelay(50);
1393 snd_cs4281_pokeBA0(chip, BA0_SPMC, BA0_SPMC_RSTN);
1394 msleep(50);
1395
1396 if (chip->dual_codec)
1397 snd_cs4281_pokeBA0(chip, BA0_SPMC, BA0_SPMC_RSTN | BA0_SPMC_ASDI2E);
1398
1399 /*
1400 * Set the serial port timing configuration.
1401 */
1402 snd_cs4281_pokeBA0(chip, BA0_SERMC,
1403 (chip->dual_codec ? BA0_SERMC_TCID(chip->dual_codec) : BA0_SERMC_TCID(1)) |
1404 BA0_SERMC_PTC_AC97 | BA0_SERMC_MSPE);
1405
1406 /*
1407 * Start the DLL Clock logic.
1408 */
1409 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, BA0_CLKCR1_DLLP);
1410 msleep(50);
1411 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, BA0_CLKCR1_SWCE | BA0_CLKCR1_DLLP);
1412
1413 /*
1414 * Wait for the DLL ready signal from the clock logic.
1415 */
1416 end_time = jiffies + HZ;
1417 do {
1418 /*
1419 * Read the AC97 status register to see if we've seen a CODEC
1420 * signal from the AC97 codec.
1421 */
1422 if (snd_cs4281_peekBA0(chip, BA0_CLKCR1) & BA0_CLKCR1_DLLRDY)
1423 goto __ok0;
1424 schedule_timeout_uninterruptible(1);
1425 } while (time_after_eq(end_time, jiffies));
1426
1427 dev_err(chip->card->dev, "DLLRDY not seen\n");
1428 return -EIO;
1429
1430 __ok0:
1431
1432 /*
1433 * The first thing we do here is to enable sync generation. As soon
1434 * as we start receiving bit clock, we'll start producing the SYNC
1435 * signal.
1436 */
1437 snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_ESYN);
1438
1439 /*
1440 * Wait for the codec ready signal from the AC97 codec.
1441 */
1442 end_time = jiffies + HZ;
1443 do {
1444 /*
1445 * Read the AC97 status register to see if we've seen a CODEC
1446 * signal from the AC97 codec.
1447 */
1448 if (snd_cs4281_peekBA0(chip, BA0_ACSTS) & BA0_ACSTS_CRDY)
1449 goto __ok1;
1450 schedule_timeout_uninterruptible(1);
1451 } while (time_after_eq(end_time, jiffies));
1452
1453 dev_err(chip->card->dev,
1454 "never read codec ready from AC'97 (0x%x)\n",
1455 snd_cs4281_peekBA0(chip, BA0_ACSTS));
1456 return -EIO;
1457
1458 __ok1:
1459 if (chip->dual_codec) {
1460 end_time = jiffies + HZ;
1461 do {
1462 if (snd_cs4281_peekBA0(chip, BA0_ACSTS2) & BA0_ACSTS_CRDY)
1463 goto __codec2_ok;
1464 schedule_timeout_uninterruptible(1);
1465 } while (time_after_eq(end_time, jiffies));
1466 dev_info(chip->card->dev,
1467 "secondary codec doesn't respond. disable it...\n");
1468 chip->dual_codec = 0;
1469 __codec2_ok: ;
1470 }
1471
1472 /*
1473 * Assert the valid frame signal so that we can start sending commands
1474 * to the AC97 codec.
1475 */
1476
1477 snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_VFRM | BA0_ACCTL_ESYN);
1478
1479 /*
1480 * Wait until we've sampled input slots 3 and 4 as valid, meaning that
1481 * the codec is pumping ADC data across the AC-link.
1482 */
1483
1484 end_time = jiffies + HZ;
1485 do {
1486 /*
1487 * Read the input slot valid register and see if input slots 3
1488 * 4 are valid yet.
1489 */
1490 if ((snd_cs4281_peekBA0(chip, BA0_ACISV) & (BA0_ACISV_SLV(3) | BA0_ACISV_SLV(4))) == (BA0_ACISV_SLV(3) | BA0_ACISV_SLV(4)))
1491 goto __ok2;
1492 schedule_timeout_uninterruptible(1);
1493 } while (time_after_eq(end_time, jiffies));
1494
1495 if (--retry_count > 0)
1496 goto __retry;
1497 dev_err(chip->card->dev, "never read ISV3 and ISV4 from AC'97\n");
1498 return -EIO;
1499
1500 __ok2:
1501
1502 /*
1503 * Now, assert valid frame and the slot 3 and 4 valid bits. This will
1504 * commense the transfer of digital audio data to the AC97 codec.
1505 */
1506 snd_cs4281_pokeBA0(chip, BA0_ACOSV, BA0_ACOSV_SLV(3) | BA0_ACOSV_SLV(4));
1507
1508 /*
1509 * Initialize DMA structures
1510 */
1511 for (tmp = 0; tmp < 4; tmp++) {
1512 struct cs4281_dma *dma = &chip->dma[tmp];
1513 dma->regDBA = BA0_DBA0 + (tmp * 0x10);
1514 dma->regDCA = BA0_DCA0 + (tmp * 0x10);
1515 dma->regDBC = BA0_DBC0 + (tmp * 0x10);
1516 dma->regDCC = BA0_DCC0 + (tmp * 0x10);
1517 dma->regDMR = BA0_DMR0 + (tmp * 8);
1518 dma->regDCR = BA0_DCR0 + (tmp * 8);
1519 dma->regHDSR = BA0_HDSR0 + (tmp * 4);
1520 dma->regFCR = BA0_FCR0 + (tmp * 4);
1521 dma->regFSIC = BA0_FSIC0 + (tmp * 4);
1522 dma->fifo_offset = tmp * CS4281_FIFO_SIZE;
1523 snd_cs4281_pokeBA0(chip, dma->regFCR,
1524 BA0_FCR_LS(31) |
1525 BA0_FCR_RS(31) |
1526 BA0_FCR_SZ(CS4281_FIFO_SIZE) |
1527 BA0_FCR_OF(dma->fifo_offset));
1528 }
1529
1530 chip->src_left_play_slot = 0; /* AC'97 left PCM playback (3) */
1531 chip->src_right_play_slot = 1; /* AC'97 right PCM playback (4) */
1532 chip->src_left_rec_slot = 10; /* AC'97 left PCM record (3) */
1533 chip->src_right_rec_slot = 11; /* AC'97 right PCM record (4) */
1534
1535 /* Activate wave playback FIFO for FM playback */
1536 chip->dma[0].valFCR = BA0_FCR_FEN | BA0_FCR_LS(0) |
1537 BA0_FCR_RS(1) |
1538 BA0_FCR_SZ(CS4281_FIFO_SIZE) |
1539 BA0_FCR_OF(chip->dma[0].fifo_offset);
1540 snd_cs4281_pokeBA0(chip, chip->dma[0].regFCR, chip->dma[0].valFCR);
1541 snd_cs4281_pokeBA0(chip, BA0_SRCSA, (chip->src_left_play_slot << 0) |
1542 (chip->src_right_play_slot << 8) |
1543 (chip->src_left_rec_slot << 16) |
1544 (chip->src_right_rec_slot << 24));
1545
1546 /* Initialize digital volume */
1547 snd_cs4281_pokeBA0(chip, BA0_PPLVC, 0);
1548 snd_cs4281_pokeBA0(chip, BA0_PPRVC, 0);
1549
1550 /* Enable IRQs */
1551 snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_EOI);
1552 /* Unmask interrupts */
1553 snd_cs4281_pokeBA0(chip, BA0_HIMR, 0x7fffffff & ~(
1554 BA0_HISR_MIDI |
1555 BA0_HISR_DMAI |
1556 BA0_HISR_DMA(0) |
1557 BA0_HISR_DMA(1) |
1558 BA0_HISR_DMA(2) |
1559 BA0_HISR_DMA(3)));
1560
1561 return 0;
1562 }
1563
1564 /*
1565 * MIDI section
1566 */
1567
snd_cs4281_midi_reset(struct cs4281 * chip)1568 static void snd_cs4281_midi_reset(struct cs4281 *chip)
1569 {
1570 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr | BA0_MIDCR_MRST);
1571 udelay(100);
1572 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1573 }
1574
snd_cs4281_midi_input_open(struct snd_rawmidi_substream * substream)1575 static int snd_cs4281_midi_input_open(struct snd_rawmidi_substream *substream)
1576 {
1577 struct cs4281 *chip = substream->rmidi->private_data;
1578
1579 guard(spinlock_irq)(&chip->reg_lock);
1580 chip->midcr |= BA0_MIDCR_RXE;
1581 chip->midi_input = substream;
1582 if (!(chip->uartm & CS4281_MODE_OUTPUT)) {
1583 snd_cs4281_midi_reset(chip);
1584 } else {
1585 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1586 }
1587 return 0;
1588 }
1589
snd_cs4281_midi_input_close(struct snd_rawmidi_substream * substream)1590 static int snd_cs4281_midi_input_close(struct snd_rawmidi_substream *substream)
1591 {
1592 struct cs4281 *chip = substream->rmidi->private_data;
1593
1594 guard(spinlock_irq)(&chip->reg_lock);
1595 chip->midcr &= ~(BA0_MIDCR_RXE | BA0_MIDCR_RIE);
1596 chip->midi_input = NULL;
1597 if (!(chip->uartm & CS4281_MODE_OUTPUT)) {
1598 snd_cs4281_midi_reset(chip);
1599 } else {
1600 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1601 }
1602 chip->uartm &= ~CS4281_MODE_INPUT;
1603 return 0;
1604 }
1605
snd_cs4281_midi_output_open(struct snd_rawmidi_substream * substream)1606 static int snd_cs4281_midi_output_open(struct snd_rawmidi_substream *substream)
1607 {
1608 struct cs4281 *chip = substream->rmidi->private_data;
1609
1610 guard(spinlock_irq)(&chip->reg_lock);
1611 chip->uartm |= CS4281_MODE_OUTPUT;
1612 chip->midcr |= BA0_MIDCR_TXE;
1613 chip->midi_output = substream;
1614 if (!(chip->uartm & CS4281_MODE_INPUT)) {
1615 snd_cs4281_midi_reset(chip);
1616 } else {
1617 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1618 }
1619 return 0;
1620 }
1621
snd_cs4281_midi_output_close(struct snd_rawmidi_substream * substream)1622 static int snd_cs4281_midi_output_close(struct snd_rawmidi_substream *substream)
1623 {
1624 struct cs4281 *chip = substream->rmidi->private_data;
1625
1626 guard(spinlock_irq)(&chip->reg_lock);
1627 chip->midcr &= ~(BA0_MIDCR_TXE | BA0_MIDCR_TIE);
1628 chip->midi_output = NULL;
1629 if (!(chip->uartm & CS4281_MODE_INPUT)) {
1630 snd_cs4281_midi_reset(chip);
1631 } else {
1632 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1633 }
1634 chip->uartm &= ~CS4281_MODE_OUTPUT;
1635 return 0;
1636 }
1637
snd_cs4281_midi_input_trigger(struct snd_rawmidi_substream * substream,int up)1638 static void snd_cs4281_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
1639 {
1640 struct cs4281 *chip = substream->rmidi->private_data;
1641
1642 guard(spinlock_irqsave)(&chip->reg_lock);
1643 if (up) {
1644 if ((chip->midcr & BA0_MIDCR_RIE) == 0) {
1645 chip->midcr |= BA0_MIDCR_RIE;
1646 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1647 }
1648 } else {
1649 if (chip->midcr & BA0_MIDCR_RIE) {
1650 chip->midcr &= ~BA0_MIDCR_RIE;
1651 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1652 }
1653 }
1654 }
1655
snd_cs4281_midi_output_trigger(struct snd_rawmidi_substream * substream,int up)1656 static void snd_cs4281_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
1657 {
1658 struct cs4281 *chip = substream->rmidi->private_data;
1659 unsigned char byte;
1660
1661 guard(spinlock_irqsave)(&chip->reg_lock);
1662 if (up) {
1663 if ((chip->midcr & BA0_MIDCR_TIE) == 0) {
1664 chip->midcr |= BA0_MIDCR_TIE;
1665 /* fill UART FIFO buffer at first, and turn Tx interrupts only if necessary */
1666 while ((chip->midcr & BA0_MIDCR_TIE) &&
1667 (snd_cs4281_peekBA0(chip, BA0_MIDSR) & BA0_MIDSR_TBF) == 0) {
1668 if (snd_rawmidi_transmit(substream, &byte, 1) != 1) {
1669 chip->midcr &= ~BA0_MIDCR_TIE;
1670 } else {
1671 snd_cs4281_pokeBA0(chip, BA0_MIDWP, byte);
1672 }
1673 }
1674 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1675 }
1676 } else {
1677 if (chip->midcr & BA0_MIDCR_TIE) {
1678 chip->midcr &= ~BA0_MIDCR_TIE;
1679 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1680 }
1681 }
1682 }
1683
1684 static const struct snd_rawmidi_ops snd_cs4281_midi_output =
1685 {
1686 .open = snd_cs4281_midi_output_open,
1687 .close = snd_cs4281_midi_output_close,
1688 .trigger = snd_cs4281_midi_output_trigger,
1689 };
1690
1691 static const struct snd_rawmidi_ops snd_cs4281_midi_input =
1692 {
1693 .open = snd_cs4281_midi_input_open,
1694 .close = snd_cs4281_midi_input_close,
1695 .trigger = snd_cs4281_midi_input_trigger,
1696 };
1697
snd_cs4281_midi(struct cs4281 * chip,int device)1698 static int snd_cs4281_midi(struct cs4281 *chip, int device)
1699 {
1700 struct snd_rawmidi *rmidi;
1701 int err;
1702
1703 err = snd_rawmidi_new(chip->card, "CS4281", device, 1, 1, &rmidi);
1704 if (err < 0)
1705 return err;
1706 strscpy(rmidi->name, "CS4281");
1707 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_cs4281_midi_output);
1708 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_cs4281_midi_input);
1709 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT | SNDRV_RAWMIDI_INFO_DUPLEX;
1710 rmidi->private_data = chip;
1711 chip->rmidi = rmidi;
1712 return 0;
1713 }
1714
1715 /*
1716 * Interrupt handler
1717 */
1718
snd_cs4281_interrupt(int irq,void * dev_id)1719 static irqreturn_t snd_cs4281_interrupt(int irq, void *dev_id)
1720 {
1721 struct cs4281 *chip = dev_id;
1722 unsigned int status, dma, val;
1723 struct cs4281_dma *cdma;
1724
1725 if (chip == NULL)
1726 return IRQ_NONE;
1727 status = snd_cs4281_peekBA0(chip, BA0_HISR);
1728 if ((status & 0x7fffffff) == 0) {
1729 snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_EOI);
1730 return IRQ_NONE;
1731 }
1732
1733 if (status & (BA0_HISR_DMA(0)|BA0_HISR_DMA(1)|BA0_HISR_DMA(2)|BA0_HISR_DMA(3))) {
1734 for (dma = 0; dma < 4; dma++) {
1735 bool period_elapsed = false;
1736 cdma = &chip->dma[dma];
1737
1738 if (status & BA0_HISR_DMA(dma)) {
1739 guard(spinlock)(&chip->reg_lock);
1740 /* ack DMA IRQ */
1741 val = snd_cs4281_peekBA0(chip, cdma->regHDSR);
1742 /* workaround, sometimes CS4281 acknowledges */
1743 /* end or middle transfer position twice */
1744 cdma->frag++;
1745 if ((val & BA0_HDSR_DHTC) && !(cdma->frag & 1)) {
1746 cdma->frag--;
1747 chip->spurious_dhtc_irq++;
1748 continue;
1749 }
1750 if ((val & BA0_HDSR_DTC) && (cdma->frag & 1)) {
1751 cdma->frag--;
1752 chip->spurious_dtc_irq++;
1753 continue;
1754 }
1755 period_elapsed = true;
1756 }
1757 if (period_elapsed)
1758 snd_pcm_period_elapsed(cdma->substream);
1759 }
1760 }
1761
1762 if ((status & BA0_HISR_MIDI) && chip->rmidi) {
1763 unsigned char c;
1764
1765 guard(spinlock)(&chip->reg_lock);
1766 while ((snd_cs4281_peekBA0(chip, BA0_MIDSR) & BA0_MIDSR_RBE) == 0) {
1767 c = snd_cs4281_peekBA0(chip, BA0_MIDRP);
1768 if ((chip->midcr & BA0_MIDCR_RIE) == 0)
1769 continue;
1770 snd_rawmidi_receive(chip->midi_input, &c, 1);
1771 }
1772 while ((snd_cs4281_peekBA0(chip, BA0_MIDSR) & BA0_MIDSR_TBF) == 0) {
1773 if ((chip->midcr & BA0_MIDCR_TIE) == 0)
1774 break;
1775 if (snd_rawmidi_transmit(chip->midi_output, &c, 1) != 1) {
1776 chip->midcr &= ~BA0_MIDCR_TIE;
1777 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1778 break;
1779 }
1780 snd_cs4281_pokeBA0(chip, BA0_MIDWP, c);
1781 }
1782 }
1783
1784 /* EOI to the PCI part... reenables interrupts */
1785 snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_EOI);
1786
1787 return IRQ_HANDLED;
1788 }
1789
1790
1791 /*
1792 * OPL3 command
1793 */
snd_cs4281_opl3_command(struct snd_opl3 * opl3,unsigned short cmd,unsigned char val)1794 static void snd_cs4281_opl3_command(struct snd_opl3 *opl3, unsigned short cmd,
1795 unsigned char val)
1796 {
1797 struct cs4281 *chip = opl3->private_data;
1798 void __iomem *port;
1799
1800 if (cmd & OPL3_RIGHT)
1801 port = chip->ba0 + BA0_B1AP; /* right port */
1802 else
1803 port = chip->ba0 + BA0_B0AP; /* left port */
1804
1805 guard(spinlock_irqsave)(&opl3->reg_lock);
1806
1807 writel((unsigned int)cmd, port);
1808 udelay(10);
1809
1810 writel((unsigned int)val, port + 4);
1811 udelay(30);
1812 }
1813
__snd_cs4281_probe(struct pci_dev * pci,const struct pci_device_id * pci_id)1814 static int __snd_cs4281_probe(struct pci_dev *pci,
1815 const struct pci_device_id *pci_id)
1816 {
1817 static int dev;
1818 struct snd_card *card;
1819 struct cs4281 *chip;
1820 struct snd_opl3 *opl3;
1821 int err;
1822
1823 if (dev >= SNDRV_CARDS)
1824 return -ENODEV;
1825 if (!enable[dev]) {
1826 dev++;
1827 return -ENOENT;
1828 }
1829
1830 err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1831 sizeof(*chip), &card);
1832 if (err < 0)
1833 return err;
1834 chip = card->private_data;
1835
1836 err = snd_cs4281_create(card, pci, dual_codec[dev]);
1837 if (err < 0)
1838 return err;
1839
1840 err = snd_cs4281_mixer(chip);
1841 if (err < 0)
1842 return err;
1843 err = snd_cs4281_pcm(chip, 0);
1844 if (err < 0)
1845 return err;
1846 err = snd_cs4281_midi(chip, 0);
1847 if (err < 0)
1848 return err;
1849 err = snd_opl3_new(card, OPL3_HW_OPL3_CS4281, &opl3);
1850 if (err < 0)
1851 return err;
1852 opl3->private_data = chip;
1853 opl3->command = snd_cs4281_opl3_command;
1854 snd_opl3_init(opl3);
1855 err = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
1856 if (err < 0)
1857 return err;
1858 snd_cs4281_create_gameport(chip);
1859 strscpy(card->driver, "CS4281");
1860 strscpy(card->shortname, "Cirrus Logic CS4281");
1861 sprintf(card->longname, "%s at 0x%lx, irq %d",
1862 card->shortname,
1863 chip->ba0_addr,
1864 chip->irq);
1865
1866 err = snd_card_register(card);
1867 if (err < 0)
1868 return err;
1869
1870 pci_set_drvdata(pci, card);
1871 dev++;
1872 return 0;
1873 }
1874
snd_cs4281_probe(struct pci_dev * pci,const struct pci_device_id * pci_id)1875 static int snd_cs4281_probe(struct pci_dev *pci,
1876 const struct pci_device_id *pci_id)
1877 {
1878 return snd_card_free_on_error(&pci->dev, __snd_cs4281_probe(pci, pci_id));
1879 }
1880
1881 /*
1882 * Power Management
1883 */
1884 static const int saved_regs[SUSPEND_REGISTERS] = {
1885 BA0_JSCTL,
1886 BA0_GPIOR,
1887 BA0_SSCR,
1888 BA0_MIDCR,
1889 BA0_SRCSA,
1890 BA0_PASR,
1891 BA0_CASR,
1892 BA0_DACSR,
1893 BA0_ADCSR,
1894 BA0_FMLVC,
1895 BA0_FMRVC,
1896 BA0_PPLVC,
1897 BA0_PPRVC,
1898 };
1899
1900 #define CLKCR1_CKRA 0x00010000L
1901
cs4281_suspend(struct device * dev)1902 static int cs4281_suspend(struct device *dev)
1903 {
1904 struct snd_card *card = dev_get_drvdata(dev);
1905 struct cs4281 *chip = card->private_data;
1906 u32 ulCLK;
1907 unsigned int i;
1908
1909 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1910 snd_ac97_suspend(chip->ac97);
1911 snd_ac97_suspend(chip->ac97_secondary);
1912
1913 ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
1914 ulCLK |= CLKCR1_CKRA;
1915 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
1916
1917 /* Disable interrupts. */
1918 snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_CHGM);
1919
1920 /* remember the status registers */
1921 for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
1922 if (saved_regs[i])
1923 chip->suspend_regs[i] = snd_cs4281_peekBA0(chip, saved_regs[i]);
1924
1925 /* Turn off the serial ports. */
1926 snd_cs4281_pokeBA0(chip, BA0_SERMC, 0);
1927
1928 /* Power off FM, Joystick, AC link, */
1929 snd_cs4281_pokeBA0(chip, BA0_SSPM, 0);
1930
1931 /* DLL off. */
1932 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, 0);
1933
1934 /* AC link off. */
1935 snd_cs4281_pokeBA0(chip, BA0_SPMC, 0);
1936
1937 ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
1938 ulCLK &= ~CLKCR1_CKRA;
1939 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
1940 return 0;
1941 }
1942
cs4281_resume(struct device * dev)1943 static int cs4281_resume(struct device *dev)
1944 {
1945 struct snd_card *card = dev_get_drvdata(dev);
1946 struct cs4281 *chip = card->private_data;
1947 unsigned int i;
1948 u32 ulCLK;
1949
1950 ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
1951 ulCLK |= CLKCR1_CKRA;
1952 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
1953
1954 snd_cs4281_chip_init(chip);
1955
1956 /* restore the status registers */
1957 for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
1958 if (saved_regs[i])
1959 snd_cs4281_pokeBA0(chip, saved_regs[i], chip->suspend_regs[i]);
1960
1961 snd_ac97_resume(chip->ac97);
1962 snd_ac97_resume(chip->ac97_secondary);
1963
1964 ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
1965 ulCLK &= ~CLKCR1_CKRA;
1966 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
1967
1968 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1969 return 0;
1970 }
1971
1972 static DEFINE_SIMPLE_DEV_PM_OPS(cs4281_pm, cs4281_suspend, cs4281_resume);
1973
1974 static struct pci_driver cs4281_driver = {
1975 .name = KBUILD_MODNAME,
1976 .id_table = snd_cs4281_ids,
1977 .probe = snd_cs4281_probe,
1978 .driver = {
1979 .pm = &cs4281_pm,
1980 },
1981 };
1982
1983 module_pci_driver(cs4281_driver);
1984