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 MODULE_SUPPORTED_DEVICE("{{Cirrus Logic,CS4281}}");
29
30 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
31 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
32 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable switches */
33 static bool dual_codec[SNDRV_CARDS]; /* dual codec */
34
35 module_param_array(index, int, NULL, 0444);
36 MODULE_PARM_DESC(index, "Index value for CS4281 soundcard.");
37 module_param_array(id, charp, NULL, 0444);
38 MODULE_PARM_DESC(id, "ID string for CS4281 soundcard.");
39 module_param_array(enable, bool, NULL, 0444);
40 MODULE_PARM_DESC(enable, "Enable CS4281 soundcard.");
41 module_param_array(dual_codec, bool, NULL, 0444);
42 MODULE_PARM_DESC(dual_codec, "Secondary Codec ID (0 = disabled).");
43
44 /*
45 * Direct registers
46 */
47
48 #define CS4281_BA0_SIZE 0x1000
49 #define CS4281_BA1_SIZE 0x10000
50
51 /*
52 * BA0 registers
53 */
54 #define BA0_HISR 0x0000 /* Host Interrupt Status Register */
55 #define BA0_HISR_INTENA (1<<31) /* Internal Interrupt Enable Bit */
56 #define BA0_HISR_MIDI (1<<22) /* MIDI port interrupt */
57 #define BA0_HISR_FIFOI (1<<20) /* FIFO polled interrupt */
58 #define BA0_HISR_DMAI (1<<18) /* DMA interrupt (half or end) */
59 #define BA0_HISR_FIFO(c) (1<<(12+(c))) /* FIFO channel interrupt */
60 #define BA0_HISR_DMA(c) (1<<(8+(c))) /* DMA channel interrupt */
61 #define BA0_HISR_GPPI (1<<5) /* General Purpose Input (Primary chip) */
62 #define BA0_HISR_GPSI (1<<4) /* General Purpose Input (Secondary chip) */
63 #define BA0_HISR_GP3I (1<<3) /* GPIO3 pin Interrupt */
64 #define BA0_HISR_GP1I (1<<2) /* GPIO1 pin Interrupt */
65 #define BA0_HISR_VUPI (1<<1) /* VOLUP pin Interrupt */
66 #define BA0_HISR_VDNI (1<<0) /* VOLDN pin Interrupt */
67
68 #define BA0_HICR 0x0008 /* Host Interrupt Control Register */
69 #define BA0_HICR_CHGM (1<<1) /* INTENA Change Mask */
70 #define BA0_HICR_IEV (1<<0) /* INTENA Value */
71 #define BA0_HICR_EOI (3<<0) /* End of Interrupt command */
72
73 #define BA0_HIMR 0x000c /* Host Interrupt Mask Register */
74 /* Use same contants as for BA0_HISR */
75
76 #define BA0_IIER 0x0010 /* ISA Interrupt Enable Register */
77
78 #define BA0_HDSR0 0x00f0 /* Host DMA Engine 0 Status Register */
79 #define BA0_HDSR1 0x00f4 /* Host DMA Engine 1 Status Register */
80 #define BA0_HDSR2 0x00f8 /* Host DMA Engine 2 Status Register */
81 #define BA0_HDSR3 0x00fc /* Host DMA Engine 3 Status Register */
82
83 #define BA0_HDSR_CH1P (1<<25) /* Channel 1 Pending */
84 #define BA0_HDSR_CH2P (1<<24) /* Channel 2 Pending */
85 #define BA0_HDSR_DHTC (1<<17) /* DMA Half Terminal Count */
86 #define BA0_HDSR_DTC (1<<16) /* DMA Terminal Count */
87 #define BA0_HDSR_DRUN (1<<15) /* DMA Running */
88 #define BA0_HDSR_RQ (1<<7) /* Pending Request */
89
90 #define BA0_DCA0 0x0110 /* Host DMA Engine 0 Current Address */
91 #define BA0_DCC0 0x0114 /* Host DMA Engine 0 Current Count */
92 #define BA0_DBA0 0x0118 /* Host DMA Engine 0 Base Address */
93 #define BA0_DBC0 0x011c /* Host DMA Engine 0 Base Count */
94 #define BA0_DCA1 0x0120 /* Host DMA Engine 1 Current Address */
95 #define BA0_DCC1 0x0124 /* Host DMA Engine 1 Current Count */
96 #define BA0_DBA1 0x0128 /* Host DMA Engine 1 Base Address */
97 #define BA0_DBC1 0x012c /* Host DMA Engine 1 Base Count */
98 #define BA0_DCA2 0x0130 /* Host DMA Engine 2 Current Address */
99 #define BA0_DCC2 0x0134 /* Host DMA Engine 2 Current Count */
100 #define BA0_DBA2 0x0138 /* Host DMA Engine 2 Base Address */
101 #define BA0_DBC2 0x013c /* Host DMA Engine 2 Base Count */
102 #define BA0_DCA3 0x0140 /* Host DMA Engine 3 Current Address */
103 #define BA0_DCC3 0x0144 /* Host DMA Engine 3 Current Count */
104 #define BA0_DBA3 0x0148 /* Host DMA Engine 3 Base Address */
105 #define BA0_DBC3 0x014c /* Host DMA Engine 3 Base Count */
106 #define BA0_DMR0 0x0150 /* Host DMA Engine 0 Mode */
107 #define BA0_DCR0 0x0154 /* Host DMA Engine 0 Command */
108 #define BA0_DMR1 0x0158 /* Host DMA Engine 1 Mode */
109 #define BA0_DCR1 0x015c /* Host DMA Engine 1 Command */
110 #define BA0_DMR2 0x0160 /* Host DMA Engine 2 Mode */
111 #define BA0_DCR2 0x0164 /* Host DMA Engine 2 Command */
112 #define BA0_DMR3 0x0168 /* Host DMA Engine 3 Mode */
113 #define BA0_DCR3 0x016c /* Host DMA Engine 3 Command */
114
115 #define BA0_DMR_DMA (1<<29) /* Enable DMA mode */
116 #define BA0_DMR_POLL (1<<28) /* Enable poll mode */
117 #define BA0_DMR_TBC (1<<25) /* Transfer By Channel */
118 #define BA0_DMR_CBC (1<<24) /* Count By Channel (0 = frame resolution) */
119 #define BA0_DMR_SWAPC (1<<22) /* Swap Left/Right Channels */
120 #define BA0_DMR_SIZE20 (1<<20) /* Sample is 20-bit */
121 #define BA0_DMR_USIGN (1<<19) /* Unsigned */
122 #define BA0_DMR_BEND (1<<18) /* Big Endian */
123 #define BA0_DMR_MONO (1<<17) /* Mono */
124 #define BA0_DMR_SIZE8 (1<<16) /* Sample is 8-bit */
125 #define BA0_DMR_TYPE_DEMAND (0<<6)
126 #define BA0_DMR_TYPE_SINGLE (1<<6)
127 #define BA0_DMR_TYPE_BLOCK (2<<6)
128 #define BA0_DMR_TYPE_CASCADE (3<<6) /* Not supported */
129 #define BA0_DMR_DEC (1<<5) /* Access Increment (0) or Decrement (1) */
130 #define BA0_DMR_AUTO (1<<4) /* Auto-Initialize */
131 #define BA0_DMR_TR_VERIFY (0<<2) /* Verify Transfer */
132 #define BA0_DMR_TR_WRITE (1<<2) /* Write Transfer */
133 #define BA0_DMR_TR_READ (2<<2) /* Read Transfer */
134
135 #define BA0_DCR_HTCIE (1<<17) /* Half Terminal Count Interrupt */
136 #define BA0_DCR_TCIE (1<<16) /* Terminal Count Interrupt */
137 #define BA0_DCR_MSK (1<<0) /* DMA Mask bit */
138
139 #define BA0_FCR0 0x0180 /* FIFO Control 0 */
140 #define BA0_FCR1 0x0184 /* FIFO Control 1 */
141 #define BA0_FCR2 0x0188 /* FIFO Control 2 */
142 #define BA0_FCR3 0x018c /* FIFO Control 3 */
143
144 #define BA0_FCR_FEN (1<<31) /* FIFO Enable bit */
145 #define BA0_FCR_DACZ (1<<30) /* DAC Zero */
146 #define BA0_FCR_PSH (1<<29) /* Previous Sample Hold */
147 #define BA0_FCR_RS(x) (((x)&0x1f)<<24) /* Right Slot Mapping */
148 #define BA0_FCR_LS(x) (((x)&0x1f)<<16) /* Left Slot Mapping */
149 #define BA0_FCR_SZ(x) (((x)&0x7f)<<8) /* FIFO buffer size (in samples) */
150 #define BA0_FCR_OF(x) (((x)&0x7f)<<0) /* FIFO starting offset (in samples) */
151
152 #define BA0_FPDR0 0x0190 /* FIFO Polled Data 0 */
153 #define BA0_FPDR1 0x0194 /* FIFO Polled Data 1 */
154 #define BA0_FPDR2 0x0198 /* FIFO Polled Data 2 */
155 #define BA0_FPDR3 0x019c /* FIFO Polled Data 3 */
156
157 #define BA0_FCHS 0x020c /* FIFO Channel Status */
158 #define BA0_FCHS_RCO(x) (1<<(7+(((x)&3)<<3))) /* Right Channel Out */
159 #define BA0_FCHS_LCO(x) (1<<(6+(((x)&3)<<3))) /* Left Channel Out */
160 #define BA0_FCHS_MRP(x) (1<<(5+(((x)&3)<<3))) /* Move Read Pointer */
161 #define BA0_FCHS_FE(x) (1<<(4+(((x)&3)<<3))) /* FIFO Empty */
162 #define BA0_FCHS_FF(x) (1<<(3+(((x)&3)<<3))) /* FIFO Full */
163 #define BA0_FCHS_IOR(x) (1<<(2+(((x)&3)<<3))) /* Internal Overrun Flag */
164 #define BA0_FCHS_RCI(x) (1<<(1+(((x)&3)<<3))) /* Right Channel In */
165 #define BA0_FCHS_LCI(x) (1<<(0+(((x)&3)<<3))) /* Left Channel In */
166
167 #define BA0_FSIC0 0x0210 /* FIFO Status and Interrupt Control 0 */
168 #define BA0_FSIC1 0x0214 /* FIFO Status and Interrupt Control 1 */
169 #define BA0_FSIC2 0x0218 /* FIFO Status and Interrupt Control 2 */
170 #define BA0_FSIC3 0x021c /* FIFO Status and Interrupt Control 3 */
171
172 #define BA0_FSIC_FIC(x) (((x)&0x7f)<<24) /* FIFO Interrupt Count */
173 #define BA0_FSIC_FORIE (1<<23) /* FIFO OverRun Interrupt Enable */
174 #define BA0_FSIC_FURIE (1<<22) /* FIFO UnderRun Interrupt Enable */
175 #define BA0_FSIC_FSCIE (1<<16) /* FIFO Sample Count Interrupt Enable */
176 #define BA0_FSIC_FSC(x) (((x)&0x7f)<<8) /* FIFO Sample Count */
177 #define BA0_FSIC_FOR (1<<7) /* FIFO OverRun */
178 #define BA0_FSIC_FUR (1<<6) /* FIFO UnderRun */
179 #define BA0_FSIC_FSCR (1<<0) /* FIFO Sample Count Reached */
180
181 #define BA0_PMCS 0x0344 /* Power Management Control/Status */
182 #define BA0_CWPR 0x03e0 /* Configuration Write Protect */
183
184 #define BA0_EPPMC 0x03e4 /* Extended PCI Power Management Control */
185 #define BA0_EPPMC_FPDN (1<<14) /* Full Power DowN */
186
187 #define BA0_GPIOR 0x03e8 /* GPIO Pin Interface Register */
188
189 #define BA0_SPMC 0x03ec /* Serial Port Power Management Control (& ASDIN2 enable) */
190 #define BA0_SPMC_GIPPEN (1<<15) /* GP INT Primary PME# Enable */
191 #define BA0_SPMC_GISPEN (1<<14) /* GP INT Secondary PME# Enable */
192 #define BA0_SPMC_EESPD (1<<9) /* EEPROM Serial Port Disable */
193 #define BA0_SPMC_ASDI2E (1<<8) /* ASDIN2 Enable */
194 #define BA0_SPMC_ASDO (1<<7) /* Asynchronous ASDOUT Assertion */
195 #define BA0_SPMC_WUP2 (1<<3) /* Wakeup for Secondary Input */
196 #define BA0_SPMC_WUP1 (1<<2) /* Wakeup for Primary Input */
197 #define BA0_SPMC_ASYNC (1<<1) /* Asynchronous ASYNC Assertion */
198 #define BA0_SPMC_RSTN (1<<0) /* Reset Not! */
199
200 #define BA0_CFLR 0x03f0 /* Configuration Load Register (EEPROM or BIOS) */
201 #define BA0_CFLR_DEFAULT 0x00000001 /* CFLR must be in AC97 link mode */
202 #define BA0_IISR 0x03f4 /* ISA Interrupt Select */
203 #define BA0_TMS 0x03f8 /* Test Register */
204 #define BA0_SSVID 0x03fc /* Subsystem ID register */
205
206 #define BA0_CLKCR1 0x0400 /* Clock Control Register 1 */
207 #define BA0_CLKCR1_CLKON (1<<25) /* Read Only */
208 #define BA0_CLKCR1_DLLRDY (1<<24) /* DLL Ready */
209 #define BA0_CLKCR1_DLLOS (1<<6) /* DLL Output Select */
210 #define BA0_CLKCR1_SWCE (1<<5) /* Clock Enable */
211 #define BA0_CLKCR1_DLLP (1<<4) /* DLL PowerUp */
212 #define BA0_CLKCR1_DLLSS (((x)&3)<<3) /* DLL Source Select */
213
214 #define BA0_FRR 0x0410 /* Feature Reporting Register */
215 #define BA0_SLT12O 0x041c /* Slot 12 GPIO Output Register for AC-Link */
216
217 #define BA0_SERMC 0x0420 /* Serial Port Master Control */
218 #define BA0_SERMC_FCRN (1<<27) /* Force Codec Ready Not */
219 #define BA0_SERMC_ODSEN2 (1<<25) /* On-Demand Support Enable ASDIN2 */
220 #define BA0_SERMC_ODSEN1 (1<<24) /* On-Demand Support Enable ASDIN1 */
221 #define BA0_SERMC_SXLB (1<<21) /* ASDIN2 to ASDOUT Loopback */
222 #define BA0_SERMC_SLB (1<<20) /* ASDOUT to ASDIN2 Loopback */
223 #define BA0_SERMC_LOVF (1<<19) /* Loopback Output Valid Frame bit */
224 #define BA0_SERMC_TCID(x) (((x)&3)<<16) /* Target Secondary Codec ID */
225 #define BA0_SERMC_PXLB (5<<1) /* Primary Port External Loopback */
226 #define BA0_SERMC_PLB (4<<1) /* Primary Port Internal Loopback */
227 #define BA0_SERMC_PTC (7<<1) /* Port Timing Configuration */
228 #define BA0_SERMC_PTC_AC97 (1<<1) /* AC97 mode */
229 #define BA0_SERMC_MSPE (1<<0) /* Master Serial Port Enable */
230
231 #define BA0_SERC1 0x0428 /* Serial Port Configuration 1 */
232 #define BA0_SERC1_SO1F(x) (((x)&7)>>1) /* Primary Output Port Format */
233 #define BA0_SERC1_AC97 (1<<1)
234 #define BA0_SERC1_SO1EN (1<<0) /* Primary Output Port Enable */
235
236 #define BA0_SERC2 0x042c /* Serial Port Configuration 2 */
237 #define BA0_SERC2_SI1F(x) (((x)&7)>>1) /* Primary Input Port Format */
238 #define BA0_SERC2_AC97 (1<<1)
239 #define BA0_SERC2_SI1EN (1<<0) /* Primary Input Port Enable */
240
241 #define BA0_SLT12M 0x045c /* Slot 12 Monitor Register for Primary AC-Link */
242
243 #define BA0_ACCTL 0x0460 /* AC'97 Control */
244 #define BA0_ACCTL_TC (1<<6) /* Target Codec */
245 #define BA0_ACCTL_CRW (1<<4) /* 0=Write, 1=Read Command */
246 #define BA0_ACCTL_DCV (1<<3) /* Dynamic Command Valid */
247 #define BA0_ACCTL_VFRM (1<<2) /* Valid Frame */
248 #define BA0_ACCTL_ESYN (1<<1) /* Enable Sync */
249
250 #define BA0_ACSTS 0x0464 /* AC'97 Status */
251 #define BA0_ACSTS_VSTS (1<<1) /* Valid Status */
252 #define BA0_ACSTS_CRDY (1<<0) /* Codec Ready */
253
254 #define BA0_ACOSV 0x0468 /* AC'97 Output Slot Valid */
255 #define BA0_ACOSV_SLV(x) (1<<((x)-3))
256
257 #define BA0_ACCAD 0x046c /* AC'97 Command Address */
258 #define BA0_ACCDA 0x0470 /* AC'97 Command Data */
259
260 #define BA0_ACISV 0x0474 /* AC'97 Input Slot Valid */
261 #define BA0_ACISV_SLV(x) (1<<((x)-3))
262
263 #define BA0_ACSAD 0x0478 /* AC'97 Status Address */
264 #define BA0_ACSDA 0x047c /* AC'97 Status Data */
265 #define BA0_JSPT 0x0480 /* Joystick poll/trigger */
266 #define BA0_JSCTL 0x0484 /* Joystick control */
267 #define BA0_JSC1 0x0488 /* Joystick control */
268 #define BA0_JSC2 0x048c /* Joystick control */
269 #define BA0_JSIO 0x04a0
270
271 #define BA0_MIDCR 0x0490 /* MIDI Control */
272 #define BA0_MIDCR_MRST (1<<5) /* Reset MIDI Interface */
273 #define BA0_MIDCR_MLB (1<<4) /* MIDI Loop Back Enable */
274 #define BA0_MIDCR_TIE (1<<3) /* MIDI Transmuit Interrupt Enable */
275 #define BA0_MIDCR_RIE (1<<2) /* MIDI Receive Interrupt Enable */
276 #define BA0_MIDCR_RXE (1<<1) /* MIDI Receive Enable */
277 #define BA0_MIDCR_TXE (1<<0) /* MIDI Transmit Enable */
278
279 #define BA0_MIDCMD 0x0494 /* MIDI Command (wo) */
280
281 #define BA0_MIDSR 0x0494 /* MIDI Status (ro) */
282 #define BA0_MIDSR_RDA (1<<15) /* Sticky bit (RBE 1->0) */
283 #define BA0_MIDSR_TBE (1<<14) /* Sticky bit (TBF 0->1) */
284 #define BA0_MIDSR_RBE (1<<7) /* Receive Buffer Empty */
285 #define BA0_MIDSR_TBF (1<<6) /* Transmit Buffer Full */
286
287 #define BA0_MIDWP 0x0498 /* MIDI Write */
288 #define BA0_MIDRP 0x049c /* MIDI Read (ro) */
289
290 #define BA0_AODSD1 0x04a8 /* AC'97 On-Demand Slot Disable for primary link (ro) */
291 #define BA0_AODSD1_NDS(x) (1<<((x)-3))
292
293 #define BA0_AODSD2 0x04ac /* AC'97 On-Demand Slot Disable for secondary link (ro) */
294 #define BA0_AODSD2_NDS(x) (1<<((x)-3))
295
296 #define BA0_CFGI 0x04b0 /* Configure Interface (EEPROM interface) */
297 #define BA0_SLT12M2 0x04dc /* Slot 12 Monitor Register 2 for secondary AC-link */
298 #define BA0_ACSTS2 0x04e4 /* AC'97 Status Register 2 */
299 #define BA0_ACISV2 0x04f4 /* AC'97 Input Slot Valid Register 2 */
300 #define BA0_ACSAD2 0x04f8 /* AC'97 Status Address Register 2 */
301 #define BA0_ACSDA2 0x04fc /* AC'97 Status Data Register 2 */
302 #define BA0_FMSR 0x0730 /* FM Synthesis Status (ro) */
303 #define BA0_B0AP 0x0730 /* FM Bank 0 Address Port (wo) */
304 #define BA0_FMDP 0x0734 /* FM Data Port */
305 #define BA0_B1AP 0x0738 /* FM Bank 1 Address Port */
306 #define BA0_B1DP 0x073c /* FM Bank 1 Data Port */
307
308 #define BA0_SSPM 0x0740 /* Sound System Power Management */
309 #define BA0_SSPM_MIXEN (1<<6) /* Playback SRC + FM/Wavetable MIX */
310 #define BA0_SSPM_CSRCEN (1<<5) /* Capture Sample Rate Converter Enable */
311 #define BA0_SSPM_PSRCEN (1<<4) /* Playback Sample Rate Converter Enable */
312 #define BA0_SSPM_JSEN (1<<3) /* Joystick Enable */
313 #define BA0_SSPM_ACLEN (1<<2) /* Serial Port Engine and AC-Link Enable */
314 #define BA0_SSPM_FMEN (1<<1) /* FM Synthesis Block Enable */
315
316 #define BA0_DACSR 0x0744 /* DAC Sample Rate - Playback SRC */
317 #define BA0_ADCSR 0x0748 /* ADC Sample Rate - Capture SRC */
318
319 #define BA0_SSCR 0x074c /* Sound System Control Register */
320 #define BA0_SSCR_HVS1 (1<<23) /* Hardwave Volume Step (0=1,1=2) */
321 #define BA0_SSCR_MVCS (1<<19) /* Master Volume Codec Select */
322 #define BA0_SSCR_MVLD (1<<18) /* Master Volume Line Out Disable */
323 #define BA0_SSCR_MVAD (1<<17) /* Master Volume Alternate Out Disable */
324 #define BA0_SSCR_MVMD (1<<16) /* Master Volume Mono Out Disable */
325 #define BA0_SSCR_XLPSRC (1<<8) /* External SRC Loopback Mode */
326 #define BA0_SSCR_LPSRC (1<<7) /* SRC Loopback Mode */
327 #define BA0_SSCR_CDTX (1<<5) /* CD Transfer Data */
328 #define BA0_SSCR_HVC (1<<3) /* Harware Volume Control Enable */
329
330 #define BA0_FMLVC 0x0754 /* FM Synthesis Left Volume Control */
331 #define BA0_FMRVC 0x0758 /* FM Synthesis Right Volume Control */
332 #define BA0_SRCSA 0x075c /* SRC Slot Assignments */
333 #define BA0_PPLVC 0x0760 /* PCM Playback Left Volume Control */
334 #define BA0_PPRVC 0x0764 /* PCM Playback Right Volume Control */
335 #define BA0_PASR 0x0768 /* playback sample rate */
336 #define BA0_CASR 0x076C /* capture sample rate */
337
338 /* Source Slot Numbers - Playback */
339 #define SRCSLOT_LEFT_PCM_PLAYBACK 0
340 #define SRCSLOT_RIGHT_PCM_PLAYBACK 1
341 #define SRCSLOT_PHONE_LINE_1_DAC 2
342 #define SRCSLOT_CENTER_PCM_PLAYBACK 3
343 #define SRCSLOT_LEFT_SURROUND_PCM_PLAYBACK 4
344 #define SRCSLOT_RIGHT_SURROUND_PCM_PLAYBACK 5
345 #define SRCSLOT_LFE_PCM_PLAYBACK 6
346 #define SRCSLOT_PHONE_LINE_2_DAC 7
347 #define SRCSLOT_HEADSET_DAC 8
348 #define SRCSLOT_LEFT_WT 29 /* invalid for BA0_SRCSA */
349 #define SRCSLOT_RIGHT_WT 30 /* invalid for BA0_SRCSA */
350
351 /* Source Slot Numbers - Capture */
352 #define SRCSLOT_LEFT_PCM_RECORD 10
353 #define SRCSLOT_RIGHT_PCM_RECORD 11
354 #define SRCSLOT_PHONE_LINE_1_ADC 12
355 #define SRCSLOT_MIC_ADC 13
356 #define SRCSLOT_PHONE_LINE_2_ADC 17
357 #define SRCSLOT_HEADSET_ADC 18
358 #define SRCSLOT_SECONDARY_LEFT_PCM_RECORD 20
359 #define SRCSLOT_SECONDARY_RIGHT_PCM_RECORD 21
360 #define SRCSLOT_SECONDARY_PHONE_LINE_1_ADC 22
361 #define SRCSLOT_SECONDARY_MIC_ADC 23
362 #define SRCSLOT_SECONDARY_PHONE_LINE_2_ADC 27
363 #define SRCSLOT_SECONDARY_HEADSET_ADC 28
364
365 /* Source Slot Numbers - Others */
366 #define SRCSLOT_POWER_DOWN 31
367
368 /* MIDI modes */
369 #define CS4281_MODE_OUTPUT (1<<0)
370 #define CS4281_MODE_INPUT (1<<1)
371
372 /* joystick bits */
373 /* Bits for JSPT */
374 #define JSPT_CAX 0x00000001
375 #define JSPT_CAY 0x00000002
376 #define JSPT_CBX 0x00000004
377 #define JSPT_CBY 0x00000008
378 #define JSPT_BA1 0x00000010
379 #define JSPT_BA2 0x00000020
380 #define JSPT_BB1 0x00000040
381 #define JSPT_BB2 0x00000080
382
383 /* Bits for JSCTL */
384 #define JSCTL_SP_MASK 0x00000003
385 #define JSCTL_SP_SLOW 0x00000000
386 #define JSCTL_SP_MEDIUM_SLOW 0x00000001
387 #define JSCTL_SP_MEDIUM_FAST 0x00000002
388 #define JSCTL_SP_FAST 0x00000003
389 #define JSCTL_ARE 0x00000004
390
391 /* Data register pairs masks */
392 #define JSC1_Y1V_MASK 0x0000FFFF
393 #define JSC1_X1V_MASK 0xFFFF0000
394 #define JSC1_Y1V_SHIFT 0
395 #define JSC1_X1V_SHIFT 16
396 #define JSC2_Y2V_MASK 0x0000FFFF
397 #define JSC2_X2V_MASK 0xFFFF0000
398 #define JSC2_Y2V_SHIFT 0
399 #define JSC2_X2V_SHIFT 16
400
401 /* JS GPIO */
402 #define JSIO_DAX 0x00000001
403 #define JSIO_DAY 0x00000002
404 #define JSIO_DBX 0x00000004
405 #define JSIO_DBY 0x00000008
406 #define JSIO_AXOE 0x00000010
407 #define JSIO_AYOE 0x00000020
408 #define JSIO_BXOE 0x00000040
409 #define JSIO_BYOE 0x00000080
410
411 /*
412 *
413 */
414
415 struct cs4281_dma {
416 struct snd_pcm_substream *substream;
417 unsigned int regDBA; /* offset to DBA register */
418 unsigned int regDCA; /* offset to DCA register */
419 unsigned int regDBC; /* offset to DBC register */
420 unsigned int regDCC; /* offset to DCC register */
421 unsigned int regDMR; /* offset to DMR register */
422 unsigned int regDCR; /* offset to DCR register */
423 unsigned int regHDSR; /* offset to HDSR register */
424 unsigned int regFCR; /* offset to FCR register */
425 unsigned int regFSIC; /* offset to FSIC register */
426 unsigned int valDMR; /* DMA mode */
427 unsigned int valDCR; /* DMA command */
428 unsigned int valFCR; /* FIFO control */
429 unsigned int fifo_offset; /* FIFO offset within BA1 */
430 unsigned char left_slot; /* FIFO left slot */
431 unsigned char right_slot; /* FIFO right slot */
432 int frag; /* period number */
433 };
434
435 #define SUSPEND_REGISTERS 20
436
437 struct cs4281 {
438 int irq;
439
440 void __iomem *ba0; /* virtual (accessible) address */
441 void __iomem *ba1; /* virtual (accessible) address */
442 unsigned long ba0_addr;
443 unsigned long ba1_addr;
444
445 int dual_codec;
446
447 struct snd_ac97_bus *ac97_bus;
448 struct snd_ac97 *ac97;
449 struct snd_ac97 *ac97_secondary;
450
451 struct pci_dev *pci;
452 struct snd_card *card;
453 struct snd_pcm *pcm;
454 struct snd_rawmidi *rmidi;
455 struct snd_rawmidi_substream *midi_input;
456 struct snd_rawmidi_substream *midi_output;
457
458 struct cs4281_dma dma[4];
459
460 unsigned char src_left_play_slot;
461 unsigned char src_right_play_slot;
462 unsigned char src_left_rec_slot;
463 unsigned char src_right_rec_slot;
464
465 unsigned int spurious_dhtc_irq;
466 unsigned int spurious_dtc_irq;
467
468 spinlock_t reg_lock;
469 unsigned int midcr;
470 unsigned int uartm;
471
472 struct gameport *gameport;
473
474 #ifdef CONFIG_PM_SLEEP
475 u32 suspend_regs[SUSPEND_REGISTERS];
476 #endif
477
478 };
479
480 static irqreturn_t snd_cs4281_interrupt(int irq, void *dev_id);
481
482 static const struct pci_device_id snd_cs4281_ids[] = {
483 { PCI_VDEVICE(CIRRUS, 0x6005), 0, }, /* CS4281 */
484 { 0, }
485 };
486
487 MODULE_DEVICE_TABLE(pci, snd_cs4281_ids);
488
489 /*
490 * constants
491 */
492
493 #define CS4281_FIFO_SIZE 32
494
495 /*
496 * common I/O routines
497 */
498
snd_cs4281_pokeBA0(struct cs4281 * chip,unsigned long offset,unsigned int val)499 static inline void snd_cs4281_pokeBA0(struct cs4281 *chip, unsigned long offset,
500 unsigned int val)
501 {
502 writel(val, chip->ba0 + offset);
503 }
504
snd_cs4281_peekBA0(struct cs4281 * chip,unsigned long offset)505 static inline unsigned int snd_cs4281_peekBA0(struct cs4281 *chip, unsigned long offset)
506 {
507 return readl(chip->ba0 + offset);
508 }
509
snd_cs4281_ac97_write(struct snd_ac97 * ac97,unsigned short reg,unsigned short val)510 static void snd_cs4281_ac97_write(struct snd_ac97 *ac97,
511 unsigned short reg, unsigned short val)
512 {
513 /*
514 * 1. Write ACCAD = Command Address Register = 46Ch for AC97 register address
515 * 2. Write ACCDA = Command Data Register = 470h for data to write to AC97
516 * 3. Write ACCTL = Control Register = 460h for initiating the write
517 * 4. Read ACCTL = 460h, DCV should be reset by now and 460h = 07h
518 * 5. if DCV not cleared, break and return error
519 */
520 struct cs4281 *chip = ac97->private_data;
521 int count;
522
523 /*
524 * Setup the AC97 control registers on the CS461x to send the
525 * appropriate command to the AC97 to perform the read.
526 * ACCAD = Command Address Register = 46Ch
527 * ACCDA = Command Data Register = 470h
528 * ACCTL = Control Register = 460h
529 * set DCV - will clear when process completed
530 * reset CRW - Write command
531 * set VFRM - valid frame enabled
532 * set ESYN - ASYNC generation enabled
533 * set RSTN - ARST# inactive, AC97 codec not reset
534 */
535 snd_cs4281_pokeBA0(chip, BA0_ACCAD, reg);
536 snd_cs4281_pokeBA0(chip, BA0_ACCDA, val);
537 snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_DCV | BA0_ACCTL_VFRM |
538 BA0_ACCTL_ESYN | (ac97->num ? BA0_ACCTL_TC : 0));
539 for (count = 0; count < 2000; count++) {
540 /*
541 * First, we want to wait for a short time.
542 */
543 udelay(10);
544 /*
545 * Now, check to see if the write has completed.
546 * ACCTL = 460h, DCV should be reset by now and 460h = 07h
547 */
548 if (!(snd_cs4281_peekBA0(chip, BA0_ACCTL) & BA0_ACCTL_DCV)) {
549 return;
550 }
551 }
552 dev_err(chip->card->dev,
553 "AC'97 write problem, reg = 0x%x, val = 0x%x\n", reg, val);
554 }
555
snd_cs4281_ac97_read(struct snd_ac97 * ac97,unsigned short reg)556 static unsigned short snd_cs4281_ac97_read(struct snd_ac97 *ac97,
557 unsigned short reg)
558 {
559 struct cs4281 *chip = ac97->private_data;
560 int count;
561 unsigned short result;
562 // FIXME: volatile is necessary in the following due to a bug of
563 // some gcc versions
564 volatile int ac97_num = ((volatile struct snd_ac97 *)ac97)->num;
565
566 /*
567 * 1. Write ACCAD = Command Address Register = 46Ch for AC97 register address
568 * 2. Write ACCDA = Command Data Register = 470h for data to write to AC97
569 * 3. Write ACCTL = Control Register = 460h for initiating the write
570 * 4. Read ACCTL = 460h, DCV should be reset by now and 460h = 17h
571 * 5. if DCV not cleared, break and return error
572 * 6. Read ACSTS = Status Register = 464h, check VSTS bit
573 */
574
575 snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSDA2 : BA0_ACSDA);
576
577 /*
578 * Setup the AC97 control registers on the CS461x to send the
579 * appropriate command to the AC97 to perform the read.
580 * ACCAD = Command Address Register = 46Ch
581 * ACCDA = Command Data Register = 470h
582 * ACCTL = Control Register = 460h
583 * set DCV - will clear when process completed
584 * set CRW - Read command
585 * set VFRM - valid frame enabled
586 * set ESYN - ASYNC generation enabled
587 * set RSTN - ARST# inactive, AC97 codec not reset
588 */
589
590 snd_cs4281_pokeBA0(chip, BA0_ACCAD, reg);
591 snd_cs4281_pokeBA0(chip, BA0_ACCDA, 0);
592 snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_DCV | BA0_ACCTL_CRW |
593 BA0_ACCTL_VFRM | BA0_ACCTL_ESYN |
594 (ac97_num ? BA0_ACCTL_TC : 0));
595
596
597 /*
598 * Wait for the read to occur.
599 */
600 for (count = 0; count < 500; count++) {
601 /*
602 * First, we want to wait for a short time.
603 */
604 udelay(10);
605 /*
606 * Now, check to see if the read has completed.
607 * ACCTL = 460h, DCV should be reset by now and 460h = 17h
608 */
609 if (!(snd_cs4281_peekBA0(chip, BA0_ACCTL) & BA0_ACCTL_DCV))
610 goto __ok1;
611 }
612
613 dev_err(chip->card->dev,
614 "AC'97 read problem (ACCTL_DCV), reg = 0x%x\n", reg);
615 result = 0xffff;
616 goto __end;
617
618 __ok1:
619 /*
620 * Wait for the valid status bit to go active.
621 */
622 for (count = 0; count < 100; count++) {
623 /*
624 * Read the AC97 status register.
625 * ACSTS = Status Register = 464h
626 * VSTS - Valid Status
627 */
628 if (snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSTS2 : BA0_ACSTS) & BA0_ACSTS_VSTS)
629 goto __ok2;
630 udelay(10);
631 }
632
633 dev_err(chip->card->dev,
634 "AC'97 read problem (ACSTS_VSTS), reg = 0x%x\n", reg);
635 result = 0xffff;
636 goto __end;
637
638 __ok2:
639 /*
640 * Read the data returned from the AC97 register.
641 * ACSDA = Status Data Register = 474h
642 */
643 result = snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSDA2 : BA0_ACSDA);
644
645 __end:
646 return result;
647 }
648
649 /*
650 * PCM part
651 */
652
snd_cs4281_trigger(struct snd_pcm_substream * substream,int cmd)653 static int snd_cs4281_trigger(struct snd_pcm_substream *substream, int cmd)
654 {
655 struct cs4281_dma *dma = substream->runtime->private_data;
656 struct cs4281 *chip = snd_pcm_substream_chip(substream);
657
658 spin_lock(&chip->reg_lock);
659 switch (cmd) {
660 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
661 dma->valDCR |= BA0_DCR_MSK;
662 dma->valFCR |= BA0_FCR_FEN;
663 break;
664 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
665 dma->valDCR &= ~BA0_DCR_MSK;
666 dma->valFCR &= ~BA0_FCR_FEN;
667 break;
668 case SNDRV_PCM_TRIGGER_START:
669 case SNDRV_PCM_TRIGGER_RESUME:
670 snd_cs4281_pokeBA0(chip, dma->regDMR, dma->valDMR & ~BA0_DMR_DMA);
671 dma->valDMR |= BA0_DMR_DMA;
672 dma->valDCR &= ~BA0_DCR_MSK;
673 dma->valFCR |= BA0_FCR_FEN;
674 break;
675 case SNDRV_PCM_TRIGGER_STOP:
676 case SNDRV_PCM_TRIGGER_SUSPEND:
677 dma->valDMR &= ~(BA0_DMR_DMA|BA0_DMR_POLL);
678 dma->valDCR |= BA0_DCR_MSK;
679 dma->valFCR &= ~BA0_FCR_FEN;
680 /* Leave wave playback FIFO enabled for FM */
681 if (dma->regFCR != BA0_FCR0)
682 dma->valFCR &= ~BA0_FCR_FEN;
683 break;
684 default:
685 spin_unlock(&chip->reg_lock);
686 return -EINVAL;
687 }
688 snd_cs4281_pokeBA0(chip, dma->regDMR, dma->valDMR);
689 snd_cs4281_pokeBA0(chip, dma->regFCR, dma->valFCR);
690 snd_cs4281_pokeBA0(chip, dma->regDCR, dma->valDCR);
691 spin_unlock(&chip->reg_lock);
692 return 0;
693 }
694
snd_cs4281_rate(unsigned int rate,unsigned int * real_rate)695 static unsigned int snd_cs4281_rate(unsigned int rate, unsigned int *real_rate)
696 {
697 unsigned int val;
698
699 if (real_rate)
700 *real_rate = rate;
701 /* special "hardcoded" rates */
702 switch (rate) {
703 case 8000: return 5;
704 case 11025: return 4;
705 case 16000: return 3;
706 case 22050: return 2;
707 case 44100: return 1;
708 case 48000: return 0;
709 default:
710 break;
711 }
712 val = 1536000 / rate;
713 if (real_rate)
714 *real_rate = 1536000 / val;
715 return val;
716 }
717
snd_cs4281_mode(struct cs4281 * chip,struct cs4281_dma * dma,struct snd_pcm_runtime * runtime,int capture,int src)718 static void snd_cs4281_mode(struct cs4281 *chip, struct cs4281_dma *dma,
719 struct snd_pcm_runtime *runtime,
720 int capture, int src)
721 {
722 int rec_mono;
723
724 dma->valDMR = BA0_DMR_TYPE_SINGLE | BA0_DMR_AUTO |
725 (capture ? BA0_DMR_TR_WRITE : BA0_DMR_TR_READ);
726 if (runtime->channels == 1)
727 dma->valDMR |= BA0_DMR_MONO;
728 if (snd_pcm_format_unsigned(runtime->format) > 0)
729 dma->valDMR |= BA0_DMR_USIGN;
730 if (snd_pcm_format_big_endian(runtime->format) > 0)
731 dma->valDMR |= BA0_DMR_BEND;
732 switch (snd_pcm_format_width(runtime->format)) {
733 case 8: dma->valDMR |= BA0_DMR_SIZE8;
734 if (runtime->channels == 1)
735 dma->valDMR |= BA0_DMR_SWAPC;
736 break;
737 case 32: dma->valDMR |= BA0_DMR_SIZE20; break;
738 }
739 dma->frag = 0; /* for workaround */
740 dma->valDCR = BA0_DCR_TCIE | BA0_DCR_MSK;
741 if (runtime->buffer_size != runtime->period_size)
742 dma->valDCR |= BA0_DCR_HTCIE;
743 /* Initialize DMA */
744 snd_cs4281_pokeBA0(chip, dma->regDBA, runtime->dma_addr);
745 snd_cs4281_pokeBA0(chip, dma->regDBC, runtime->buffer_size - 1);
746 rec_mono = (chip->dma[1].valDMR & BA0_DMR_MONO) == BA0_DMR_MONO;
747 snd_cs4281_pokeBA0(chip, BA0_SRCSA, (chip->src_left_play_slot << 0) |
748 (chip->src_right_play_slot << 8) |
749 (chip->src_left_rec_slot << 16) |
750 ((rec_mono ? 31 : chip->src_right_rec_slot) << 24));
751 if (!src)
752 goto __skip_src;
753 if (!capture) {
754 if (dma->left_slot == chip->src_left_play_slot) {
755 unsigned int val = snd_cs4281_rate(runtime->rate, NULL);
756 snd_BUG_ON(dma->right_slot != chip->src_right_play_slot);
757 snd_cs4281_pokeBA0(chip, BA0_DACSR, val);
758 }
759 } else {
760 if (dma->left_slot == chip->src_left_rec_slot) {
761 unsigned int val = snd_cs4281_rate(runtime->rate, NULL);
762 snd_BUG_ON(dma->right_slot != chip->src_right_rec_slot);
763 snd_cs4281_pokeBA0(chip, BA0_ADCSR, val);
764 }
765 }
766 __skip_src:
767 /* Deactivate wave playback FIFO before changing slot assignments */
768 if (dma->regFCR == BA0_FCR0)
769 snd_cs4281_pokeBA0(chip, dma->regFCR, snd_cs4281_peekBA0(chip, dma->regFCR) & ~BA0_FCR_FEN);
770 /* Initialize FIFO */
771 dma->valFCR = BA0_FCR_LS(dma->left_slot) |
772 BA0_FCR_RS(capture && (dma->valDMR & BA0_DMR_MONO) ? 31 : dma->right_slot) |
773 BA0_FCR_SZ(CS4281_FIFO_SIZE) |
774 BA0_FCR_OF(dma->fifo_offset);
775 snd_cs4281_pokeBA0(chip, dma->regFCR, dma->valFCR | (capture ? BA0_FCR_PSH : 0));
776 /* Activate FIFO again for FM playback */
777 if (dma->regFCR == BA0_FCR0)
778 snd_cs4281_pokeBA0(chip, dma->regFCR, dma->valFCR | BA0_FCR_FEN);
779 /* Clear FIFO Status and Interrupt Control Register */
780 snd_cs4281_pokeBA0(chip, dma->regFSIC, 0);
781 }
782
snd_cs4281_playback_prepare(struct snd_pcm_substream * substream)783 static int snd_cs4281_playback_prepare(struct snd_pcm_substream *substream)
784 {
785 struct snd_pcm_runtime *runtime = substream->runtime;
786 struct cs4281_dma *dma = runtime->private_data;
787 struct cs4281 *chip = snd_pcm_substream_chip(substream);
788
789 spin_lock_irq(&chip->reg_lock);
790 snd_cs4281_mode(chip, dma, runtime, 0, 1);
791 spin_unlock_irq(&chip->reg_lock);
792 return 0;
793 }
794
snd_cs4281_capture_prepare(struct snd_pcm_substream * substream)795 static int snd_cs4281_capture_prepare(struct snd_pcm_substream *substream)
796 {
797 struct snd_pcm_runtime *runtime = substream->runtime;
798 struct cs4281_dma *dma = runtime->private_data;
799 struct cs4281 *chip = snd_pcm_substream_chip(substream);
800
801 spin_lock_irq(&chip->reg_lock);
802 snd_cs4281_mode(chip, dma, runtime, 1, 1);
803 spin_unlock_irq(&chip->reg_lock);
804 return 0;
805 }
806
snd_cs4281_pointer(struct snd_pcm_substream * substream)807 static snd_pcm_uframes_t snd_cs4281_pointer(struct snd_pcm_substream *substream)
808 {
809 struct snd_pcm_runtime *runtime = substream->runtime;
810 struct cs4281_dma *dma = runtime->private_data;
811 struct cs4281 *chip = snd_pcm_substream_chip(substream);
812
813 /*
814 dev_dbg(chip->card->dev,
815 "DCC = 0x%x, buffer_size = 0x%x, jiffies = %li\n",
816 snd_cs4281_peekBA0(chip, dma->regDCC), runtime->buffer_size,
817 jiffies);
818 */
819 return runtime->buffer_size -
820 snd_cs4281_peekBA0(chip, dma->regDCC) - 1;
821 }
822
823 static const struct snd_pcm_hardware snd_cs4281_playback =
824 {
825 .info = SNDRV_PCM_INFO_MMAP |
826 SNDRV_PCM_INFO_INTERLEAVED |
827 SNDRV_PCM_INFO_MMAP_VALID |
828 SNDRV_PCM_INFO_PAUSE |
829 SNDRV_PCM_INFO_RESUME,
830 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
831 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_S16_LE |
832 SNDRV_PCM_FMTBIT_U16_BE | SNDRV_PCM_FMTBIT_S16_BE |
833 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_S32_LE |
834 SNDRV_PCM_FMTBIT_U32_BE | SNDRV_PCM_FMTBIT_S32_BE,
835 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
836 .rate_min = 4000,
837 .rate_max = 48000,
838 .channels_min = 1,
839 .channels_max = 2,
840 .buffer_bytes_max = (512*1024),
841 .period_bytes_min = 64,
842 .period_bytes_max = (512*1024),
843 .periods_min = 1,
844 .periods_max = 2,
845 .fifo_size = CS4281_FIFO_SIZE,
846 };
847
848 static const struct snd_pcm_hardware snd_cs4281_capture =
849 {
850 .info = SNDRV_PCM_INFO_MMAP |
851 SNDRV_PCM_INFO_INTERLEAVED |
852 SNDRV_PCM_INFO_MMAP_VALID |
853 SNDRV_PCM_INFO_PAUSE |
854 SNDRV_PCM_INFO_RESUME,
855 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
856 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_S16_LE |
857 SNDRV_PCM_FMTBIT_U16_BE | SNDRV_PCM_FMTBIT_S16_BE |
858 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_S32_LE |
859 SNDRV_PCM_FMTBIT_U32_BE | SNDRV_PCM_FMTBIT_S32_BE,
860 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
861 .rate_min = 4000,
862 .rate_max = 48000,
863 .channels_min = 1,
864 .channels_max = 2,
865 .buffer_bytes_max = (512*1024),
866 .period_bytes_min = 64,
867 .period_bytes_max = (512*1024),
868 .periods_min = 1,
869 .periods_max = 2,
870 .fifo_size = CS4281_FIFO_SIZE,
871 };
872
snd_cs4281_playback_open(struct snd_pcm_substream * substream)873 static int snd_cs4281_playback_open(struct snd_pcm_substream *substream)
874 {
875 struct cs4281 *chip = snd_pcm_substream_chip(substream);
876 struct snd_pcm_runtime *runtime = substream->runtime;
877 struct cs4281_dma *dma;
878
879 dma = &chip->dma[0];
880 dma->substream = substream;
881 dma->left_slot = 0;
882 dma->right_slot = 1;
883 runtime->private_data = dma;
884 runtime->hw = snd_cs4281_playback;
885 /* should be detected from the AC'97 layer, but it seems
886 that although CS4297A rev B reports 18-bit ADC resolution,
887 samples are 20-bit */
888 snd_pcm_hw_constraint_msbits(runtime, 0, 32, 20);
889 return 0;
890 }
891
snd_cs4281_capture_open(struct snd_pcm_substream * substream)892 static int snd_cs4281_capture_open(struct snd_pcm_substream *substream)
893 {
894 struct cs4281 *chip = snd_pcm_substream_chip(substream);
895 struct snd_pcm_runtime *runtime = substream->runtime;
896 struct cs4281_dma *dma;
897
898 dma = &chip->dma[1];
899 dma->substream = substream;
900 dma->left_slot = 10;
901 dma->right_slot = 11;
902 runtime->private_data = dma;
903 runtime->hw = snd_cs4281_capture;
904 /* should be detected from the AC'97 layer, but it seems
905 that although CS4297A rev B reports 18-bit ADC resolution,
906 samples are 20-bit */
907 snd_pcm_hw_constraint_msbits(runtime, 0, 32, 20);
908 return 0;
909 }
910
snd_cs4281_playback_close(struct snd_pcm_substream * substream)911 static int snd_cs4281_playback_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
snd_cs4281_capture_close(struct snd_pcm_substream * substream)919 static int snd_cs4281_capture_close(struct snd_pcm_substream *substream)
920 {
921 struct cs4281_dma *dma = substream->runtime->private_data;
922
923 dma->substream = NULL;
924 return 0;
925 }
926
927 static const struct snd_pcm_ops snd_cs4281_playback_ops = {
928 .open = snd_cs4281_playback_open,
929 .close = snd_cs4281_playback_close,
930 .prepare = snd_cs4281_playback_prepare,
931 .trigger = snd_cs4281_trigger,
932 .pointer = snd_cs4281_pointer,
933 };
934
935 static const struct snd_pcm_ops snd_cs4281_capture_ops = {
936 .open = snd_cs4281_capture_open,
937 .close = snd_cs4281_capture_close,
938 .prepare = snd_cs4281_capture_prepare,
939 .trigger = snd_cs4281_trigger,
940 .pointer = snd_cs4281_pointer,
941 };
942
snd_cs4281_pcm(struct cs4281 * chip,int device)943 static int snd_cs4281_pcm(struct cs4281 *chip, int device)
944 {
945 struct snd_pcm *pcm;
946 int err;
947
948 err = snd_pcm_new(chip->card, "CS4281", device, 1, 1, &pcm);
949 if (err < 0)
950 return err;
951
952 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_cs4281_playback_ops);
953 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cs4281_capture_ops);
954
955 pcm->private_data = chip;
956 pcm->info_flags = 0;
957 strcpy(pcm->name, "CS4281");
958 chip->pcm = pcm;
959
960 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
961 64*1024, 512*1024);
962
963 return 0;
964 }
965
966 /*
967 * Mixer section
968 */
969
970 #define CS_VOL_MASK 0x1f
971
snd_cs4281_info_volume(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)972 static int snd_cs4281_info_volume(struct snd_kcontrol *kcontrol,
973 struct snd_ctl_elem_info *uinfo)
974 {
975 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
976 uinfo->count = 2;
977 uinfo->value.integer.min = 0;
978 uinfo->value.integer.max = CS_VOL_MASK;
979 return 0;
980 }
981
snd_cs4281_get_volume(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)982 static int snd_cs4281_get_volume(struct snd_kcontrol *kcontrol,
983 struct snd_ctl_elem_value *ucontrol)
984 {
985 struct cs4281 *chip = snd_kcontrol_chip(kcontrol);
986 int regL = (kcontrol->private_value >> 16) & 0xffff;
987 int regR = kcontrol->private_value & 0xffff;
988 int volL, volR;
989
990 volL = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regL) & CS_VOL_MASK);
991 volR = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regR) & CS_VOL_MASK);
992
993 ucontrol->value.integer.value[0] = volL;
994 ucontrol->value.integer.value[1] = volR;
995 return 0;
996 }
997
snd_cs4281_put_volume(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)998 static int snd_cs4281_put_volume(struct snd_kcontrol *kcontrol,
999 struct snd_ctl_elem_value *ucontrol)
1000 {
1001 struct cs4281 *chip = snd_kcontrol_chip(kcontrol);
1002 int change = 0;
1003 int regL = (kcontrol->private_value >> 16) & 0xffff;
1004 int regR = kcontrol->private_value & 0xffff;
1005 int volL, volR;
1006
1007 volL = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regL) & CS_VOL_MASK);
1008 volR = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regR) & CS_VOL_MASK);
1009
1010 if (ucontrol->value.integer.value[0] != volL) {
1011 volL = CS_VOL_MASK - (ucontrol->value.integer.value[0] & CS_VOL_MASK);
1012 snd_cs4281_pokeBA0(chip, regL, volL);
1013 change = 1;
1014 }
1015 if (ucontrol->value.integer.value[1] != volR) {
1016 volR = CS_VOL_MASK - (ucontrol->value.integer.value[1] & CS_VOL_MASK);
1017 snd_cs4281_pokeBA0(chip, regR, volR);
1018 change = 1;
1019 }
1020 return change;
1021 }
1022
1023 static const DECLARE_TLV_DB_SCALE(db_scale_dsp, -4650, 150, 0);
1024
1025 static const struct snd_kcontrol_new snd_cs4281_fm_vol =
1026 {
1027 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1028 .name = "Synth Playback Volume",
1029 .info = snd_cs4281_info_volume,
1030 .get = snd_cs4281_get_volume,
1031 .put = snd_cs4281_put_volume,
1032 .private_value = ((BA0_FMLVC << 16) | BA0_FMRVC),
1033 .tlv = { .p = db_scale_dsp },
1034 };
1035
1036 static const struct snd_kcontrol_new snd_cs4281_pcm_vol =
1037 {
1038 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1039 .name = "PCM Stream Playback Volume",
1040 .info = snd_cs4281_info_volume,
1041 .get = snd_cs4281_get_volume,
1042 .put = snd_cs4281_put_volume,
1043 .private_value = ((BA0_PPLVC << 16) | BA0_PPRVC),
1044 .tlv = { .p = db_scale_dsp },
1045 };
1046
snd_cs4281_mixer_free_ac97_bus(struct snd_ac97_bus * bus)1047 static void snd_cs4281_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1048 {
1049 struct cs4281 *chip = bus->private_data;
1050 chip->ac97_bus = NULL;
1051 }
1052
snd_cs4281_mixer_free_ac97(struct snd_ac97 * ac97)1053 static void snd_cs4281_mixer_free_ac97(struct snd_ac97 *ac97)
1054 {
1055 struct cs4281 *chip = ac97->private_data;
1056 if (ac97->num)
1057 chip->ac97_secondary = NULL;
1058 else
1059 chip->ac97 = NULL;
1060 }
1061
snd_cs4281_mixer(struct cs4281 * chip)1062 static int snd_cs4281_mixer(struct cs4281 *chip)
1063 {
1064 struct snd_card *card = chip->card;
1065 struct snd_ac97_template ac97;
1066 int err;
1067 static const struct snd_ac97_bus_ops ops = {
1068 .write = snd_cs4281_ac97_write,
1069 .read = snd_cs4281_ac97_read,
1070 };
1071
1072 if ((err = snd_ac97_bus(card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1073 return err;
1074 chip->ac97_bus->private_free = snd_cs4281_mixer_free_ac97_bus;
1075
1076 memset(&ac97, 0, sizeof(ac97));
1077 ac97.private_data = chip;
1078 ac97.private_free = snd_cs4281_mixer_free_ac97;
1079 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1080 return err;
1081 if (chip->dual_codec) {
1082 ac97.num = 1;
1083 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97_secondary)) < 0)
1084 return err;
1085 }
1086 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4281_fm_vol, chip))) < 0)
1087 return err;
1088 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4281_pcm_vol, chip))) < 0)
1089 return err;
1090 return 0;
1091 }
1092
1093
1094 /*
1095 * proc interface
1096 */
1097
snd_cs4281_proc_read(struct snd_info_entry * entry,struct snd_info_buffer * buffer)1098 static void snd_cs4281_proc_read(struct snd_info_entry *entry,
1099 struct snd_info_buffer *buffer)
1100 {
1101 struct cs4281 *chip = entry->private_data;
1102
1103 snd_iprintf(buffer, "Cirrus Logic CS4281\n\n");
1104 snd_iprintf(buffer, "Spurious half IRQs : %u\n", chip->spurious_dhtc_irq);
1105 snd_iprintf(buffer, "Spurious end IRQs : %u\n", chip->spurious_dtc_irq);
1106 }
1107
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)1108 static ssize_t snd_cs4281_BA0_read(struct snd_info_entry *entry,
1109 void *file_private_data,
1110 struct file *file, char __user *buf,
1111 size_t count, loff_t pos)
1112 {
1113 struct cs4281 *chip = entry->private_data;
1114
1115 if (copy_to_user_fromio(buf, chip->ba0 + pos, count))
1116 return -EFAULT;
1117 return count;
1118 }
1119
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)1120 static ssize_t snd_cs4281_BA1_read(struct snd_info_entry *entry,
1121 void *file_private_data,
1122 struct file *file, char __user *buf,
1123 size_t count, loff_t pos)
1124 {
1125 struct cs4281 *chip = entry->private_data;
1126
1127 if (copy_to_user_fromio(buf, chip->ba1 + pos, count))
1128 return -EFAULT;
1129 return count;
1130 }
1131
1132 static const struct snd_info_entry_ops snd_cs4281_proc_ops_BA0 = {
1133 .read = snd_cs4281_BA0_read,
1134 };
1135
1136 static const struct snd_info_entry_ops snd_cs4281_proc_ops_BA1 = {
1137 .read = snd_cs4281_BA1_read,
1138 };
1139
snd_cs4281_proc_init(struct cs4281 * chip)1140 static void snd_cs4281_proc_init(struct cs4281 *chip)
1141 {
1142 struct snd_info_entry *entry;
1143
1144 snd_card_ro_proc_new(chip->card, "cs4281", chip, snd_cs4281_proc_read);
1145 if (! snd_card_proc_new(chip->card, "cs4281_BA0", &entry)) {
1146 entry->content = SNDRV_INFO_CONTENT_DATA;
1147 entry->private_data = chip;
1148 entry->c.ops = &snd_cs4281_proc_ops_BA0;
1149 entry->size = CS4281_BA0_SIZE;
1150 }
1151 if (! snd_card_proc_new(chip->card, "cs4281_BA1", &entry)) {
1152 entry->content = SNDRV_INFO_CONTENT_DATA;
1153 entry->private_data = chip;
1154 entry->c.ops = &snd_cs4281_proc_ops_BA1;
1155 entry->size = CS4281_BA1_SIZE;
1156 }
1157 }
1158
1159 /*
1160 * joystick support
1161 */
1162
1163 #if IS_REACHABLE(CONFIG_GAMEPORT)
1164
snd_cs4281_gameport_trigger(struct gameport * gameport)1165 static void snd_cs4281_gameport_trigger(struct gameport *gameport)
1166 {
1167 struct cs4281 *chip = gameport_get_port_data(gameport);
1168
1169 if (snd_BUG_ON(!chip))
1170 return;
1171 snd_cs4281_pokeBA0(chip, BA0_JSPT, 0xff);
1172 }
1173
snd_cs4281_gameport_read(struct gameport * gameport)1174 static unsigned char snd_cs4281_gameport_read(struct gameport *gameport)
1175 {
1176 struct cs4281 *chip = gameport_get_port_data(gameport);
1177
1178 if (snd_BUG_ON(!chip))
1179 return 0;
1180 return snd_cs4281_peekBA0(chip, BA0_JSPT);
1181 }
1182
1183 #ifdef COOKED_MODE
snd_cs4281_gameport_cooked_read(struct gameport * gameport,int * axes,int * buttons)1184 static int snd_cs4281_gameport_cooked_read(struct gameport *gameport,
1185 int *axes, int *buttons)
1186 {
1187 struct cs4281 *chip = gameport_get_port_data(gameport);
1188 unsigned js1, js2, jst;
1189
1190 if (snd_BUG_ON(!chip))
1191 return 0;
1192
1193 js1 = snd_cs4281_peekBA0(chip, BA0_JSC1);
1194 js2 = snd_cs4281_peekBA0(chip, BA0_JSC2);
1195 jst = snd_cs4281_peekBA0(chip, BA0_JSPT);
1196
1197 *buttons = (~jst >> 4) & 0x0F;
1198
1199 axes[0] = ((js1 & JSC1_Y1V_MASK) >> JSC1_Y1V_SHIFT) & 0xFFFF;
1200 axes[1] = ((js1 & JSC1_X1V_MASK) >> JSC1_X1V_SHIFT) & 0xFFFF;
1201 axes[2] = ((js2 & JSC2_Y2V_MASK) >> JSC2_Y2V_SHIFT) & 0xFFFF;
1202 axes[3] = ((js2 & JSC2_X2V_MASK) >> JSC2_X2V_SHIFT) & 0xFFFF;
1203
1204 for (jst = 0; jst < 4; ++jst)
1205 if (axes[jst] == 0xFFFF) axes[jst] = -1;
1206 return 0;
1207 }
1208 #else
1209 #define snd_cs4281_gameport_cooked_read NULL
1210 #endif
1211
snd_cs4281_gameport_open(struct gameport * gameport,int mode)1212 static int snd_cs4281_gameport_open(struct gameport *gameport, int mode)
1213 {
1214 switch (mode) {
1215 #ifdef COOKED_MODE
1216 case GAMEPORT_MODE_COOKED:
1217 return 0;
1218 #endif
1219 case GAMEPORT_MODE_RAW:
1220 return 0;
1221 default:
1222 return -1;
1223 }
1224 return 0;
1225 }
1226
snd_cs4281_create_gameport(struct cs4281 * chip)1227 static int snd_cs4281_create_gameport(struct cs4281 *chip)
1228 {
1229 struct gameport *gp;
1230
1231 chip->gameport = gp = gameport_allocate_port();
1232 if (!gp) {
1233 dev_err(chip->card->dev,
1234 "cannot allocate memory for gameport\n");
1235 return -ENOMEM;
1236 }
1237
1238 gameport_set_name(gp, "CS4281 Gameport");
1239 gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1240 gameport_set_dev_parent(gp, &chip->pci->dev);
1241 gp->open = snd_cs4281_gameport_open;
1242 gp->read = snd_cs4281_gameport_read;
1243 gp->trigger = snd_cs4281_gameport_trigger;
1244 gp->cooked_read = snd_cs4281_gameport_cooked_read;
1245 gameport_set_port_data(gp, chip);
1246
1247 snd_cs4281_pokeBA0(chip, BA0_JSIO, 0xFF); // ?
1248 snd_cs4281_pokeBA0(chip, BA0_JSCTL, JSCTL_SP_MEDIUM_SLOW);
1249
1250 gameport_register_port(gp);
1251
1252 return 0;
1253 }
1254
snd_cs4281_free_gameport(struct cs4281 * chip)1255 static void snd_cs4281_free_gameport(struct cs4281 *chip)
1256 {
1257 if (chip->gameport) {
1258 gameport_unregister_port(chip->gameport);
1259 chip->gameport = NULL;
1260 }
1261 }
1262 #else
snd_cs4281_create_gameport(struct cs4281 * chip)1263 static inline int snd_cs4281_create_gameport(struct cs4281 *chip) { return -ENOSYS; }
snd_cs4281_free_gameport(struct cs4281 * chip)1264 static inline void snd_cs4281_free_gameport(struct cs4281 *chip) { }
1265 #endif /* IS_REACHABLE(CONFIG_GAMEPORT) */
1266
snd_cs4281_free(struct cs4281 * chip)1267 static int snd_cs4281_free(struct cs4281 *chip)
1268 {
1269 snd_cs4281_free_gameport(chip);
1270
1271 /* Mask interrupts */
1272 snd_cs4281_pokeBA0(chip, BA0_HIMR, 0x7fffffff);
1273 /* Stop the DLL Clock logic. */
1274 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, 0);
1275 /* Sound System Power Management - Turn Everything OFF */
1276 snd_cs4281_pokeBA0(chip, BA0_SSPM, 0);
1277 /* PCI interface - D3 state */
1278 pci_set_power_state(chip->pci, PCI_D3hot);
1279
1280 if (chip->irq >= 0)
1281 free_irq(chip->irq, chip);
1282 iounmap(chip->ba0);
1283 iounmap(chip->ba1);
1284 pci_release_regions(chip->pci);
1285 pci_disable_device(chip->pci);
1286
1287 kfree(chip);
1288 return 0;
1289 }
1290
snd_cs4281_dev_free(struct snd_device * device)1291 static int snd_cs4281_dev_free(struct snd_device *device)
1292 {
1293 struct cs4281 *chip = device->device_data;
1294 return snd_cs4281_free(chip);
1295 }
1296
1297 static int snd_cs4281_chip_init(struct cs4281 *chip); /* defined below */
1298
snd_cs4281_create(struct snd_card * card,struct pci_dev * pci,struct cs4281 ** rchip,int dual_codec)1299 static int snd_cs4281_create(struct snd_card *card,
1300 struct pci_dev *pci,
1301 struct cs4281 **rchip,
1302 int dual_codec)
1303 {
1304 struct cs4281 *chip;
1305 unsigned int tmp;
1306 int err;
1307 static const struct snd_device_ops ops = {
1308 .dev_free = snd_cs4281_dev_free,
1309 };
1310
1311 *rchip = NULL;
1312 if ((err = pci_enable_device(pci)) < 0)
1313 return err;
1314 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1315 if (chip == NULL) {
1316 pci_disable_device(pci);
1317 return -ENOMEM;
1318 }
1319 spin_lock_init(&chip->reg_lock);
1320 chip->card = card;
1321 chip->pci = pci;
1322 chip->irq = -1;
1323 pci_set_master(pci);
1324 if (dual_codec < 0 || dual_codec > 3) {
1325 dev_err(card->dev, "invalid dual_codec option %d\n", dual_codec);
1326 dual_codec = 0;
1327 }
1328 chip->dual_codec = dual_codec;
1329
1330 if ((err = pci_request_regions(pci, "CS4281")) < 0) {
1331 kfree(chip);
1332 pci_disable_device(pci);
1333 return err;
1334 }
1335 chip->ba0_addr = pci_resource_start(pci, 0);
1336 chip->ba1_addr = pci_resource_start(pci, 1);
1337
1338 chip->ba0 = pci_ioremap_bar(pci, 0);
1339 chip->ba1 = pci_ioremap_bar(pci, 1);
1340 if (!chip->ba0 || !chip->ba1) {
1341 snd_cs4281_free(chip);
1342 return -ENOMEM;
1343 }
1344
1345 if (request_irq(pci->irq, snd_cs4281_interrupt, IRQF_SHARED,
1346 KBUILD_MODNAME, chip)) {
1347 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1348 snd_cs4281_free(chip);
1349 return -ENOMEM;
1350 }
1351 chip->irq = pci->irq;
1352 card->sync_irq = chip->irq;
1353
1354 tmp = snd_cs4281_chip_init(chip);
1355 if (tmp) {
1356 snd_cs4281_free(chip);
1357 return tmp;
1358 }
1359
1360 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1361 snd_cs4281_free(chip);
1362 return err;
1363 }
1364
1365 snd_cs4281_proc_init(chip);
1366
1367 *rchip = chip;
1368 return 0;
1369 }
1370
snd_cs4281_chip_init(struct cs4281 * chip)1371 static int snd_cs4281_chip_init(struct cs4281 *chip)
1372 {
1373 unsigned int tmp;
1374 unsigned long end_time;
1375 int retry_count = 2;
1376
1377 /* Having EPPMC.FPDN=1 prevent proper chip initialisation */
1378 tmp = snd_cs4281_peekBA0(chip, BA0_EPPMC);
1379 if (tmp & BA0_EPPMC_FPDN)
1380 snd_cs4281_pokeBA0(chip, BA0_EPPMC, tmp & ~BA0_EPPMC_FPDN);
1381
1382 __retry:
1383 tmp = snd_cs4281_peekBA0(chip, BA0_CFLR);
1384 if (tmp != BA0_CFLR_DEFAULT) {
1385 snd_cs4281_pokeBA0(chip, BA0_CFLR, BA0_CFLR_DEFAULT);
1386 tmp = snd_cs4281_peekBA0(chip, BA0_CFLR);
1387 if (tmp != BA0_CFLR_DEFAULT) {
1388 dev_err(chip->card->dev,
1389 "CFLR setup failed (0x%x)\n", tmp);
1390 return -EIO;
1391 }
1392 }
1393
1394 /* Set the 'Configuration Write Protect' register
1395 * to 4281h. Allows vendor-defined configuration
1396 * space between 0e4h and 0ffh to be written. */
1397 snd_cs4281_pokeBA0(chip, BA0_CWPR, 0x4281);
1398
1399 if ((tmp = snd_cs4281_peekBA0(chip, BA0_SERC1)) != (BA0_SERC1_SO1EN | BA0_SERC1_AC97)) {
1400 dev_err(chip->card->dev,
1401 "SERC1 AC'97 check failed (0x%x)\n", tmp);
1402 return -EIO;
1403 }
1404 if ((tmp = snd_cs4281_peekBA0(chip, BA0_SERC2)) != (BA0_SERC2_SI1EN | BA0_SERC2_AC97)) {
1405 dev_err(chip->card->dev,
1406 "SERC2 AC'97 check failed (0x%x)\n", tmp);
1407 return -EIO;
1408 }
1409
1410 /* Sound System Power Management */
1411 snd_cs4281_pokeBA0(chip, BA0_SSPM, BA0_SSPM_MIXEN | BA0_SSPM_CSRCEN |
1412 BA0_SSPM_PSRCEN | BA0_SSPM_JSEN |
1413 BA0_SSPM_ACLEN | BA0_SSPM_FMEN);
1414
1415 /* Serial Port Power Management */
1416 /* Blast the clock control register to zero so that the
1417 * PLL starts out in a known state, and blast the master serial
1418 * port control register to zero so that the serial ports also
1419 * start out in a known state. */
1420 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, 0);
1421 snd_cs4281_pokeBA0(chip, BA0_SERMC, 0);
1422
1423 /* Make ESYN go to zero to turn off
1424 * the Sync pulse on the AC97 link. */
1425 snd_cs4281_pokeBA0(chip, BA0_ACCTL, 0);
1426 udelay(50);
1427
1428 /* Drive the ARST# pin low for a minimum of 1uS (as defined in the AC97
1429 * spec) and then drive it high. This is done for non AC97 modes since
1430 * there might be logic external to the CS4281 that uses the ARST# line
1431 * for a reset. */
1432 snd_cs4281_pokeBA0(chip, BA0_SPMC, 0);
1433 udelay(50);
1434 snd_cs4281_pokeBA0(chip, BA0_SPMC, BA0_SPMC_RSTN);
1435 msleep(50);
1436
1437 if (chip->dual_codec)
1438 snd_cs4281_pokeBA0(chip, BA0_SPMC, BA0_SPMC_RSTN | BA0_SPMC_ASDI2E);
1439
1440 /*
1441 * Set the serial port timing configuration.
1442 */
1443 snd_cs4281_pokeBA0(chip, BA0_SERMC,
1444 (chip->dual_codec ? BA0_SERMC_TCID(chip->dual_codec) : BA0_SERMC_TCID(1)) |
1445 BA0_SERMC_PTC_AC97 | BA0_SERMC_MSPE);
1446
1447 /*
1448 * Start the DLL Clock logic.
1449 */
1450 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, BA0_CLKCR1_DLLP);
1451 msleep(50);
1452 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, BA0_CLKCR1_SWCE | BA0_CLKCR1_DLLP);
1453
1454 /*
1455 * Wait for the DLL ready signal from the clock logic.
1456 */
1457 end_time = jiffies + HZ;
1458 do {
1459 /*
1460 * Read the AC97 status register to see if we've seen a CODEC
1461 * signal from the AC97 codec.
1462 */
1463 if (snd_cs4281_peekBA0(chip, BA0_CLKCR1) & BA0_CLKCR1_DLLRDY)
1464 goto __ok0;
1465 schedule_timeout_uninterruptible(1);
1466 } while (time_after_eq(end_time, jiffies));
1467
1468 dev_err(chip->card->dev, "DLLRDY not seen\n");
1469 return -EIO;
1470
1471 __ok0:
1472
1473 /*
1474 * The first thing we do here is to enable sync generation. As soon
1475 * as we start receiving bit clock, we'll start producing the SYNC
1476 * signal.
1477 */
1478 snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_ESYN);
1479
1480 /*
1481 * Wait for the codec ready signal from the AC97 codec.
1482 */
1483 end_time = jiffies + HZ;
1484 do {
1485 /*
1486 * Read the AC97 status register to see if we've seen a CODEC
1487 * signal from the AC97 codec.
1488 */
1489 if (snd_cs4281_peekBA0(chip, BA0_ACSTS) & BA0_ACSTS_CRDY)
1490 goto __ok1;
1491 schedule_timeout_uninterruptible(1);
1492 } while (time_after_eq(end_time, jiffies));
1493
1494 dev_err(chip->card->dev,
1495 "never read codec ready from AC'97 (0x%x)\n",
1496 snd_cs4281_peekBA0(chip, BA0_ACSTS));
1497 return -EIO;
1498
1499 __ok1:
1500 if (chip->dual_codec) {
1501 end_time = jiffies + HZ;
1502 do {
1503 if (snd_cs4281_peekBA0(chip, BA0_ACSTS2) & BA0_ACSTS_CRDY)
1504 goto __codec2_ok;
1505 schedule_timeout_uninterruptible(1);
1506 } while (time_after_eq(end_time, jiffies));
1507 dev_info(chip->card->dev,
1508 "secondary codec doesn't respond. disable it...\n");
1509 chip->dual_codec = 0;
1510 __codec2_ok: ;
1511 }
1512
1513 /*
1514 * Assert the valid frame signal so that we can start sending commands
1515 * to the AC97 codec.
1516 */
1517
1518 snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_VFRM | BA0_ACCTL_ESYN);
1519
1520 /*
1521 * Wait until we've sampled input slots 3 and 4 as valid, meaning that
1522 * the codec is pumping ADC data across the AC-link.
1523 */
1524
1525 end_time = jiffies + HZ;
1526 do {
1527 /*
1528 * Read the input slot valid register and see if input slots 3
1529 * 4 are valid yet.
1530 */
1531 if ((snd_cs4281_peekBA0(chip, BA0_ACISV) & (BA0_ACISV_SLV(3) | BA0_ACISV_SLV(4))) == (BA0_ACISV_SLV(3) | BA0_ACISV_SLV(4)))
1532 goto __ok2;
1533 schedule_timeout_uninterruptible(1);
1534 } while (time_after_eq(end_time, jiffies));
1535
1536 if (--retry_count > 0)
1537 goto __retry;
1538 dev_err(chip->card->dev, "never read ISV3 and ISV4 from AC'97\n");
1539 return -EIO;
1540
1541 __ok2:
1542
1543 /*
1544 * Now, assert valid frame and the slot 3 and 4 valid bits. This will
1545 * commense the transfer of digital audio data to the AC97 codec.
1546 */
1547 snd_cs4281_pokeBA0(chip, BA0_ACOSV, BA0_ACOSV_SLV(3) | BA0_ACOSV_SLV(4));
1548
1549 /*
1550 * Initialize DMA structures
1551 */
1552 for (tmp = 0; tmp < 4; tmp++) {
1553 struct cs4281_dma *dma = &chip->dma[tmp];
1554 dma->regDBA = BA0_DBA0 + (tmp * 0x10);
1555 dma->regDCA = BA0_DCA0 + (tmp * 0x10);
1556 dma->regDBC = BA0_DBC0 + (tmp * 0x10);
1557 dma->regDCC = BA0_DCC0 + (tmp * 0x10);
1558 dma->regDMR = BA0_DMR0 + (tmp * 8);
1559 dma->regDCR = BA0_DCR0 + (tmp * 8);
1560 dma->regHDSR = BA0_HDSR0 + (tmp * 4);
1561 dma->regFCR = BA0_FCR0 + (tmp * 4);
1562 dma->regFSIC = BA0_FSIC0 + (tmp * 4);
1563 dma->fifo_offset = tmp * CS4281_FIFO_SIZE;
1564 snd_cs4281_pokeBA0(chip, dma->regFCR,
1565 BA0_FCR_LS(31) |
1566 BA0_FCR_RS(31) |
1567 BA0_FCR_SZ(CS4281_FIFO_SIZE) |
1568 BA0_FCR_OF(dma->fifo_offset));
1569 }
1570
1571 chip->src_left_play_slot = 0; /* AC'97 left PCM playback (3) */
1572 chip->src_right_play_slot = 1; /* AC'97 right PCM playback (4) */
1573 chip->src_left_rec_slot = 10; /* AC'97 left PCM record (3) */
1574 chip->src_right_rec_slot = 11; /* AC'97 right PCM record (4) */
1575
1576 /* Activate wave playback FIFO for FM playback */
1577 chip->dma[0].valFCR = BA0_FCR_FEN | BA0_FCR_LS(0) |
1578 BA0_FCR_RS(1) |
1579 BA0_FCR_SZ(CS4281_FIFO_SIZE) |
1580 BA0_FCR_OF(chip->dma[0].fifo_offset);
1581 snd_cs4281_pokeBA0(chip, chip->dma[0].regFCR, chip->dma[0].valFCR);
1582 snd_cs4281_pokeBA0(chip, BA0_SRCSA, (chip->src_left_play_slot << 0) |
1583 (chip->src_right_play_slot << 8) |
1584 (chip->src_left_rec_slot << 16) |
1585 (chip->src_right_rec_slot << 24));
1586
1587 /* Initialize digital volume */
1588 snd_cs4281_pokeBA0(chip, BA0_PPLVC, 0);
1589 snd_cs4281_pokeBA0(chip, BA0_PPRVC, 0);
1590
1591 /* Enable IRQs */
1592 snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_EOI);
1593 /* Unmask interrupts */
1594 snd_cs4281_pokeBA0(chip, BA0_HIMR, 0x7fffffff & ~(
1595 BA0_HISR_MIDI |
1596 BA0_HISR_DMAI |
1597 BA0_HISR_DMA(0) |
1598 BA0_HISR_DMA(1) |
1599 BA0_HISR_DMA(2) |
1600 BA0_HISR_DMA(3)));
1601
1602 return 0;
1603 }
1604
1605 /*
1606 * MIDI section
1607 */
1608
snd_cs4281_midi_reset(struct cs4281 * chip)1609 static void snd_cs4281_midi_reset(struct cs4281 *chip)
1610 {
1611 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr | BA0_MIDCR_MRST);
1612 udelay(100);
1613 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1614 }
1615
snd_cs4281_midi_input_open(struct snd_rawmidi_substream * substream)1616 static int snd_cs4281_midi_input_open(struct snd_rawmidi_substream *substream)
1617 {
1618 struct cs4281 *chip = substream->rmidi->private_data;
1619
1620 spin_lock_irq(&chip->reg_lock);
1621 chip->midcr |= BA0_MIDCR_RXE;
1622 chip->midi_input = substream;
1623 if (!(chip->uartm & CS4281_MODE_OUTPUT)) {
1624 snd_cs4281_midi_reset(chip);
1625 } else {
1626 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1627 }
1628 spin_unlock_irq(&chip->reg_lock);
1629 return 0;
1630 }
1631
snd_cs4281_midi_input_close(struct snd_rawmidi_substream * substream)1632 static int snd_cs4281_midi_input_close(struct snd_rawmidi_substream *substream)
1633 {
1634 struct cs4281 *chip = substream->rmidi->private_data;
1635
1636 spin_lock_irq(&chip->reg_lock);
1637 chip->midcr &= ~(BA0_MIDCR_RXE | BA0_MIDCR_RIE);
1638 chip->midi_input = NULL;
1639 if (!(chip->uartm & CS4281_MODE_OUTPUT)) {
1640 snd_cs4281_midi_reset(chip);
1641 } else {
1642 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1643 }
1644 chip->uartm &= ~CS4281_MODE_INPUT;
1645 spin_unlock_irq(&chip->reg_lock);
1646 return 0;
1647 }
1648
snd_cs4281_midi_output_open(struct snd_rawmidi_substream * substream)1649 static int snd_cs4281_midi_output_open(struct snd_rawmidi_substream *substream)
1650 {
1651 struct cs4281 *chip = substream->rmidi->private_data;
1652
1653 spin_lock_irq(&chip->reg_lock);
1654 chip->uartm |= CS4281_MODE_OUTPUT;
1655 chip->midcr |= BA0_MIDCR_TXE;
1656 chip->midi_output = substream;
1657 if (!(chip->uartm & CS4281_MODE_INPUT)) {
1658 snd_cs4281_midi_reset(chip);
1659 } else {
1660 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1661 }
1662 spin_unlock_irq(&chip->reg_lock);
1663 return 0;
1664 }
1665
snd_cs4281_midi_output_close(struct snd_rawmidi_substream * substream)1666 static int snd_cs4281_midi_output_close(struct snd_rawmidi_substream *substream)
1667 {
1668 struct cs4281 *chip = substream->rmidi->private_data;
1669
1670 spin_lock_irq(&chip->reg_lock);
1671 chip->midcr &= ~(BA0_MIDCR_TXE | BA0_MIDCR_TIE);
1672 chip->midi_output = NULL;
1673 if (!(chip->uartm & CS4281_MODE_INPUT)) {
1674 snd_cs4281_midi_reset(chip);
1675 } else {
1676 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1677 }
1678 chip->uartm &= ~CS4281_MODE_OUTPUT;
1679 spin_unlock_irq(&chip->reg_lock);
1680 return 0;
1681 }
1682
snd_cs4281_midi_input_trigger(struct snd_rawmidi_substream * substream,int up)1683 static void snd_cs4281_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
1684 {
1685 unsigned long flags;
1686 struct cs4281 *chip = substream->rmidi->private_data;
1687
1688 spin_lock_irqsave(&chip->reg_lock, flags);
1689 if (up) {
1690 if ((chip->midcr & BA0_MIDCR_RIE) == 0) {
1691 chip->midcr |= BA0_MIDCR_RIE;
1692 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1693 }
1694 } else {
1695 if (chip->midcr & BA0_MIDCR_RIE) {
1696 chip->midcr &= ~BA0_MIDCR_RIE;
1697 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1698 }
1699 }
1700 spin_unlock_irqrestore(&chip->reg_lock, flags);
1701 }
1702
snd_cs4281_midi_output_trigger(struct snd_rawmidi_substream * substream,int up)1703 static void snd_cs4281_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
1704 {
1705 unsigned long flags;
1706 struct cs4281 *chip = substream->rmidi->private_data;
1707 unsigned char byte;
1708
1709 spin_lock_irqsave(&chip->reg_lock, flags);
1710 if (up) {
1711 if ((chip->midcr & BA0_MIDCR_TIE) == 0) {
1712 chip->midcr |= BA0_MIDCR_TIE;
1713 /* fill UART FIFO buffer at first, and turn Tx interrupts only if necessary */
1714 while ((chip->midcr & BA0_MIDCR_TIE) &&
1715 (snd_cs4281_peekBA0(chip, BA0_MIDSR) & BA0_MIDSR_TBF) == 0) {
1716 if (snd_rawmidi_transmit(substream, &byte, 1) != 1) {
1717 chip->midcr &= ~BA0_MIDCR_TIE;
1718 } else {
1719 snd_cs4281_pokeBA0(chip, BA0_MIDWP, byte);
1720 }
1721 }
1722 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1723 }
1724 } else {
1725 if (chip->midcr & BA0_MIDCR_TIE) {
1726 chip->midcr &= ~BA0_MIDCR_TIE;
1727 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1728 }
1729 }
1730 spin_unlock_irqrestore(&chip->reg_lock, flags);
1731 }
1732
1733 static const struct snd_rawmidi_ops snd_cs4281_midi_output =
1734 {
1735 .open = snd_cs4281_midi_output_open,
1736 .close = snd_cs4281_midi_output_close,
1737 .trigger = snd_cs4281_midi_output_trigger,
1738 };
1739
1740 static const struct snd_rawmidi_ops snd_cs4281_midi_input =
1741 {
1742 .open = snd_cs4281_midi_input_open,
1743 .close = snd_cs4281_midi_input_close,
1744 .trigger = snd_cs4281_midi_input_trigger,
1745 };
1746
snd_cs4281_midi(struct cs4281 * chip,int device)1747 static int snd_cs4281_midi(struct cs4281 *chip, int device)
1748 {
1749 struct snd_rawmidi *rmidi;
1750 int err;
1751
1752 if ((err = snd_rawmidi_new(chip->card, "CS4281", device, 1, 1, &rmidi)) < 0)
1753 return err;
1754 strcpy(rmidi->name, "CS4281");
1755 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_cs4281_midi_output);
1756 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_cs4281_midi_input);
1757 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT | SNDRV_RAWMIDI_INFO_DUPLEX;
1758 rmidi->private_data = chip;
1759 chip->rmidi = rmidi;
1760 return 0;
1761 }
1762
1763 /*
1764 * Interrupt handler
1765 */
1766
snd_cs4281_interrupt(int irq,void * dev_id)1767 static irqreturn_t snd_cs4281_interrupt(int irq, void *dev_id)
1768 {
1769 struct cs4281 *chip = dev_id;
1770 unsigned int status, dma, val;
1771 struct cs4281_dma *cdma;
1772
1773 if (chip == NULL)
1774 return IRQ_NONE;
1775 status = snd_cs4281_peekBA0(chip, BA0_HISR);
1776 if ((status & 0x7fffffff) == 0) {
1777 snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_EOI);
1778 return IRQ_NONE;
1779 }
1780
1781 if (status & (BA0_HISR_DMA(0)|BA0_HISR_DMA(1)|BA0_HISR_DMA(2)|BA0_HISR_DMA(3))) {
1782 for (dma = 0; dma < 4; dma++)
1783 if (status & BA0_HISR_DMA(dma)) {
1784 cdma = &chip->dma[dma];
1785 spin_lock(&chip->reg_lock);
1786 /* ack DMA IRQ */
1787 val = snd_cs4281_peekBA0(chip, cdma->regHDSR);
1788 /* workaround, sometimes CS4281 acknowledges */
1789 /* end or middle transfer position twice */
1790 cdma->frag++;
1791 if ((val & BA0_HDSR_DHTC) && !(cdma->frag & 1)) {
1792 cdma->frag--;
1793 chip->spurious_dhtc_irq++;
1794 spin_unlock(&chip->reg_lock);
1795 continue;
1796 }
1797 if ((val & BA0_HDSR_DTC) && (cdma->frag & 1)) {
1798 cdma->frag--;
1799 chip->spurious_dtc_irq++;
1800 spin_unlock(&chip->reg_lock);
1801 continue;
1802 }
1803 spin_unlock(&chip->reg_lock);
1804 snd_pcm_period_elapsed(cdma->substream);
1805 }
1806 }
1807
1808 if ((status & BA0_HISR_MIDI) && chip->rmidi) {
1809 unsigned char c;
1810
1811 spin_lock(&chip->reg_lock);
1812 while ((snd_cs4281_peekBA0(chip, BA0_MIDSR) & BA0_MIDSR_RBE) == 0) {
1813 c = snd_cs4281_peekBA0(chip, BA0_MIDRP);
1814 if ((chip->midcr & BA0_MIDCR_RIE) == 0)
1815 continue;
1816 snd_rawmidi_receive(chip->midi_input, &c, 1);
1817 }
1818 while ((snd_cs4281_peekBA0(chip, BA0_MIDSR) & BA0_MIDSR_TBF) == 0) {
1819 if ((chip->midcr & BA0_MIDCR_TIE) == 0)
1820 break;
1821 if (snd_rawmidi_transmit(chip->midi_output, &c, 1) != 1) {
1822 chip->midcr &= ~BA0_MIDCR_TIE;
1823 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1824 break;
1825 }
1826 snd_cs4281_pokeBA0(chip, BA0_MIDWP, c);
1827 }
1828 spin_unlock(&chip->reg_lock);
1829 }
1830
1831 /* EOI to the PCI part... reenables interrupts */
1832 snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_EOI);
1833
1834 return IRQ_HANDLED;
1835 }
1836
1837
1838 /*
1839 * OPL3 command
1840 */
snd_cs4281_opl3_command(struct snd_opl3 * opl3,unsigned short cmd,unsigned char val)1841 static void snd_cs4281_opl3_command(struct snd_opl3 *opl3, unsigned short cmd,
1842 unsigned char val)
1843 {
1844 unsigned long flags;
1845 struct cs4281 *chip = opl3->private_data;
1846 void __iomem *port;
1847
1848 if (cmd & OPL3_RIGHT)
1849 port = chip->ba0 + BA0_B1AP; /* right port */
1850 else
1851 port = chip->ba0 + BA0_B0AP; /* left port */
1852
1853 spin_lock_irqsave(&opl3->reg_lock, flags);
1854
1855 writel((unsigned int)cmd, port);
1856 udelay(10);
1857
1858 writel((unsigned int)val, port + 4);
1859 udelay(30);
1860
1861 spin_unlock_irqrestore(&opl3->reg_lock, flags);
1862 }
1863
snd_cs4281_probe(struct pci_dev * pci,const struct pci_device_id * pci_id)1864 static int snd_cs4281_probe(struct pci_dev *pci,
1865 const struct pci_device_id *pci_id)
1866 {
1867 static int dev;
1868 struct snd_card *card;
1869 struct cs4281 *chip;
1870 struct snd_opl3 *opl3;
1871 int err;
1872
1873 if (dev >= SNDRV_CARDS)
1874 return -ENODEV;
1875 if (!enable[dev]) {
1876 dev++;
1877 return -ENOENT;
1878 }
1879
1880 err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1881 0, &card);
1882 if (err < 0)
1883 return err;
1884
1885 if ((err = snd_cs4281_create(card, pci, &chip, dual_codec[dev])) < 0) {
1886 snd_card_free(card);
1887 return err;
1888 }
1889 card->private_data = chip;
1890
1891 if ((err = snd_cs4281_mixer(chip)) < 0) {
1892 snd_card_free(card);
1893 return err;
1894 }
1895 if ((err = snd_cs4281_pcm(chip, 0)) < 0) {
1896 snd_card_free(card);
1897 return err;
1898 }
1899 if ((err = snd_cs4281_midi(chip, 0)) < 0) {
1900 snd_card_free(card);
1901 return err;
1902 }
1903 if ((err = snd_opl3_new(card, OPL3_HW_OPL3_CS4281, &opl3)) < 0) {
1904 snd_card_free(card);
1905 return err;
1906 }
1907 opl3->private_data = chip;
1908 opl3->command = snd_cs4281_opl3_command;
1909 snd_opl3_init(opl3);
1910 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
1911 snd_card_free(card);
1912 return err;
1913 }
1914 snd_cs4281_create_gameport(chip);
1915 strcpy(card->driver, "CS4281");
1916 strcpy(card->shortname, "Cirrus Logic CS4281");
1917 sprintf(card->longname, "%s at 0x%lx, irq %d",
1918 card->shortname,
1919 chip->ba0_addr,
1920 chip->irq);
1921
1922 if ((err = snd_card_register(card)) < 0) {
1923 snd_card_free(card);
1924 return err;
1925 }
1926
1927 pci_set_drvdata(pci, card);
1928 dev++;
1929 return 0;
1930 }
1931
snd_cs4281_remove(struct pci_dev * pci)1932 static void snd_cs4281_remove(struct pci_dev *pci)
1933 {
1934 snd_card_free(pci_get_drvdata(pci));
1935 }
1936
1937 /*
1938 * Power Management
1939 */
1940 #ifdef CONFIG_PM_SLEEP
1941
1942 static const int saved_regs[SUSPEND_REGISTERS] = {
1943 BA0_JSCTL,
1944 BA0_GPIOR,
1945 BA0_SSCR,
1946 BA0_MIDCR,
1947 BA0_SRCSA,
1948 BA0_PASR,
1949 BA0_CASR,
1950 BA0_DACSR,
1951 BA0_ADCSR,
1952 BA0_FMLVC,
1953 BA0_FMRVC,
1954 BA0_PPLVC,
1955 BA0_PPRVC,
1956 };
1957
1958 #define CLKCR1_CKRA 0x00010000L
1959
cs4281_suspend(struct device * dev)1960 static int cs4281_suspend(struct device *dev)
1961 {
1962 struct snd_card *card = dev_get_drvdata(dev);
1963 struct cs4281 *chip = card->private_data;
1964 u32 ulCLK;
1965 unsigned int i;
1966
1967 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1968 snd_ac97_suspend(chip->ac97);
1969 snd_ac97_suspend(chip->ac97_secondary);
1970
1971 ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
1972 ulCLK |= CLKCR1_CKRA;
1973 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
1974
1975 /* Disable interrupts. */
1976 snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_CHGM);
1977
1978 /* remember the status registers */
1979 for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
1980 if (saved_regs[i])
1981 chip->suspend_regs[i] = snd_cs4281_peekBA0(chip, saved_regs[i]);
1982
1983 /* Turn off the serial ports. */
1984 snd_cs4281_pokeBA0(chip, BA0_SERMC, 0);
1985
1986 /* Power off FM, Joystick, AC link, */
1987 snd_cs4281_pokeBA0(chip, BA0_SSPM, 0);
1988
1989 /* DLL off. */
1990 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, 0);
1991
1992 /* AC link off. */
1993 snd_cs4281_pokeBA0(chip, BA0_SPMC, 0);
1994
1995 ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
1996 ulCLK &= ~CLKCR1_CKRA;
1997 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
1998 return 0;
1999 }
2000
cs4281_resume(struct device * dev)2001 static int cs4281_resume(struct device *dev)
2002 {
2003 struct snd_card *card = dev_get_drvdata(dev);
2004 struct cs4281 *chip = card->private_data;
2005 unsigned int i;
2006 u32 ulCLK;
2007
2008 ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
2009 ulCLK |= CLKCR1_CKRA;
2010 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
2011
2012 snd_cs4281_chip_init(chip);
2013
2014 /* restore the status registers */
2015 for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
2016 if (saved_regs[i])
2017 snd_cs4281_pokeBA0(chip, saved_regs[i], chip->suspend_regs[i]);
2018
2019 snd_ac97_resume(chip->ac97);
2020 snd_ac97_resume(chip->ac97_secondary);
2021
2022 ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
2023 ulCLK &= ~CLKCR1_CKRA;
2024 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
2025
2026 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2027 return 0;
2028 }
2029
2030 static SIMPLE_DEV_PM_OPS(cs4281_pm, cs4281_suspend, cs4281_resume);
2031 #define CS4281_PM_OPS &cs4281_pm
2032 #else
2033 #define CS4281_PM_OPS NULL
2034 #endif /* CONFIG_PM_SLEEP */
2035
2036 static struct pci_driver cs4281_driver = {
2037 .name = KBUILD_MODNAME,
2038 .id_table = snd_cs4281_ids,
2039 .probe = snd_cs4281_probe,
2040 .remove = snd_cs4281_remove,
2041 .driver = {
2042 .pm = CS4281_PM_OPS,
2043 },
2044 };
2045
2046 module_pci_driver(cs4281_driver);
2047