source: GPL/trunk/alsa-kernel/pci/cs4281.c@ 706

Last change on this file since 706 was 703, checked in by David Azarewicz, 4 years ago

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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#ifdef TARGET_OS2
26#define KBUILD_MODNAME "cs4281"
27#endif
28MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
29MODULE_DESCRIPTION("Cirrus Logic CS4281");
30MODULE_LICENSE("GPL");
31
32static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
33static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
34static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable switches */
35static bool dual_codec[SNDRV_CARDS]; /* dual codec */
36
37module_param_array(index, int, NULL, 0444);
38MODULE_PARM_DESC(index, "Index value for CS4281 soundcard.");
39module_param_array(id, charp, NULL, 0444);
40MODULE_PARM_DESC(id, "ID string for CS4281 soundcard.");
41module_param_array(enable, bool, NULL, 0444);
42MODULE_PARM_DESC(enable, "Enable CS4281 soundcard.");
43module_param_array(dual_codec, bool, NULL, 0444);
44MODULE_PARM_DESC(dual_codec, "Secondary Codec ID (0 = disabled).");
45
46/*
47 * Direct registers
48 */
49
50#define CS4281_BA0_SIZE 0x1000
51#define CS4281_BA1_SIZE 0x10000
52
53/*
54 * BA0 registers
55 */
56#define BA0_HISR 0x0000 /* Host Interrupt Status Register */
57#define BA0_HISR_INTENA (1<<31) /* Internal Interrupt Enable Bit */
58#define BA0_HISR_MIDI (1<<22) /* MIDI port interrupt */
59#define BA0_HISR_FIFOI (1<<20) /* FIFO polled interrupt */
60#define BA0_HISR_DMAI (1<<18) /* DMA interrupt (half or end) */
61#define BA0_HISR_FIFO(c) (1<<(12+(c))) /* FIFO channel interrupt */
62#define BA0_HISR_DMA(c) (1<<(8+(c))) /* DMA channel interrupt */
63#define BA0_HISR_GPPI (1<<5) /* General Purpose Input (Primary chip) */
64#define BA0_HISR_GPSI (1<<4) /* General Purpose Input (Secondary chip) */
65#define BA0_HISR_GP3I (1<<3) /* GPIO3 pin Interrupt */
66#define BA0_HISR_GP1I (1<<2) /* GPIO1 pin Interrupt */
67#define BA0_HISR_VUPI (1<<1) /* VOLUP pin Interrupt */
68#define BA0_HISR_VDNI (1<<0) /* VOLDN pin Interrupt */
69
70#define BA0_HICR 0x0008 /* Host Interrupt Control Register */
71#define BA0_HICR_CHGM (1<<1) /* INTENA Change Mask */
72#define BA0_HICR_IEV (1<<0) /* INTENA Value */
73#define BA0_HICR_EOI (3<<0) /* End of Interrupt command */
74
75#define BA0_HIMR 0x000c /* Host Interrupt Mask Register */
76 /* Use same contants as for BA0_HISR */
77
78#define BA0_IIER 0x0010 /* ISA Interrupt Enable Register */
79
80#define BA0_HDSR0 0x00f0 /* Host DMA Engine 0 Status Register */
81#define BA0_HDSR1 0x00f4 /* Host DMA Engine 1 Status Register */
82#define BA0_HDSR2 0x00f8 /* Host DMA Engine 2 Status Register */
83#define BA0_HDSR3 0x00fc /* Host DMA Engine 3 Status Register */
84
85#define BA0_HDSR_CH1P (1<<25) /* Channel 1 Pending */
86#define BA0_HDSR_CH2P (1<<24) /* Channel 2 Pending */
87#define BA0_HDSR_DHTC (1<<17) /* DMA Half Terminal Count */
88#define BA0_HDSR_DTC (1<<16) /* DMA Terminal Count */
89#define BA0_HDSR_DRUN (1<<15) /* DMA Running */
90#define BA0_HDSR_RQ (1<<7) /* Pending Request */
91
92#define BA0_DCA0 0x0110 /* Host DMA Engine 0 Current Address */
93#define BA0_DCC0 0x0114 /* Host DMA Engine 0 Current Count */
94#define BA0_DBA0 0x0118 /* Host DMA Engine 0 Base Address */
95#define BA0_DBC0 0x011c /* Host DMA Engine 0 Base Count */
96#define BA0_DCA1 0x0120 /* Host DMA Engine 1 Current Address */
97#define BA0_DCC1 0x0124 /* Host DMA Engine 1 Current Count */
98#define BA0_DBA1 0x0128 /* Host DMA Engine 1 Base Address */
99#define BA0_DBC1 0x012c /* Host DMA Engine 1 Base Count */
100#define BA0_DCA2 0x0130 /* Host DMA Engine 2 Current Address */
101#define BA0_DCC2 0x0134 /* Host DMA Engine 2 Current Count */
102#define BA0_DBA2 0x0138 /* Host DMA Engine 2 Base Address */
103#define BA0_DBC2 0x013c /* Host DMA Engine 2 Base Count */
104#define BA0_DCA3 0x0140 /* Host DMA Engine 3 Current Address */
105#define BA0_DCC3 0x0144 /* Host DMA Engine 3 Current Count */
106#define BA0_DBA3 0x0148 /* Host DMA Engine 3 Base Address */
107#define BA0_DBC3 0x014c /* Host DMA Engine 3 Base Count */
108#define BA0_DMR0 0x0150 /* Host DMA Engine 0 Mode */
109#define BA0_DCR0 0x0154 /* Host DMA Engine 0 Command */
110#define BA0_DMR1 0x0158 /* Host DMA Engine 1 Mode */
111#define BA0_DCR1 0x015c /* Host DMA Engine 1 Command */
112#define BA0_DMR2 0x0160 /* Host DMA Engine 2 Mode */
113#define BA0_DCR2 0x0164 /* Host DMA Engine 2 Command */
114#define BA0_DMR3 0x0168 /* Host DMA Engine 3 Mode */
115#define BA0_DCR3 0x016c /* Host DMA Engine 3 Command */
116
117#define BA0_DMR_DMA (1<<29) /* Enable DMA mode */
118#define BA0_DMR_POLL (1<<28) /* Enable poll mode */
119#define BA0_DMR_TBC (1<<25) /* Transfer By Channel */
120#define BA0_DMR_CBC (1<<24) /* Count By Channel (0 = frame resolution) */
121#define BA0_DMR_SWAPC (1<<22) /* Swap Left/Right Channels */
122#define BA0_DMR_SIZE20 (1<<20) /* Sample is 20-bit */
123#define BA0_DMR_USIGN (1<<19) /* Unsigned */
124#define BA0_DMR_BEND (1<<18) /* Big Endian */
125#define BA0_DMR_MONO (1<<17) /* Mono */
126#define BA0_DMR_SIZE8 (1<<16) /* Sample is 8-bit */
127#define BA0_DMR_TYPE_DEMAND (0<<6)
128#define BA0_DMR_TYPE_SINGLE (1<<6)
129#define BA0_DMR_TYPE_BLOCK (2<<6)
130#define BA0_DMR_TYPE_CASCADE (3<<6) /* Not supported */
131#define BA0_DMR_DEC (1<<5) /* Access Increment (0) or Decrement (1) */
132#define BA0_DMR_AUTO (1<<4) /* Auto-Initialize */
133#define BA0_DMR_TR_VERIFY (0<<2) /* Verify Transfer */
134#define BA0_DMR_TR_WRITE (1<<2) /* Write Transfer */
135#define BA0_DMR_TR_READ (2<<2) /* Read Transfer */
136
137#define BA0_DCR_HTCIE (1<<17) /* Half Terminal Count Interrupt */
138#define BA0_DCR_TCIE (1<<16) /* Terminal Count Interrupt */
139#define BA0_DCR_MSK (1<<0) /* DMA Mask bit */
140
141#define BA0_FCR0 0x0180 /* FIFO Control 0 */
142#define BA0_FCR1 0x0184 /* FIFO Control 1 */
143#define BA0_FCR2 0x0188 /* FIFO Control 2 */
144#define BA0_FCR3 0x018c /* FIFO Control 3 */
145
146#define BA0_FCR_FEN (1<<31) /* FIFO Enable bit */
147#define BA0_FCR_DACZ (1<<30) /* DAC Zero */
148#define BA0_FCR_PSH (1<<29) /* Previous Sample Hold */
149#define BA0_FCR_RS(x) (((x)&0x1f)<<24) /* Right Slot Mapping */
150#define BA0_FCR_LS(x) (((x)&0x1f)<<16) /* Left Slot Mapping */
151#define BA0_FCR_SZ(x) (((x)&0x7f)<<8) /* FIFO buffer size (in samples) */
152#define BA0_FCR_OF(x) (((x)&0x7f)<<0) /* FIFO starting offset (in samples) */
153
154#define BA0_FPDR0 0x0190 /* FIFO Polled Data 0 */
155#define BA0_FPDR1 0x0194 /* FIFO Polled Data 1 */
156#define BA0_FPDR2 0x0198 /* FIFO Polled Data 2 */
157#define BA0_FPDR3 0x019c /* FIFO Polled Data 3 */
158
159#define BA0_FCHS 0x020c /* FIFO Channel Status */
160#define BA0_FCHS_RCO(x) (1<<(7+(((x)&3)<<3))) /* Right Channel Out */
161#define BA0_FCHS_LCO(x) (1<<(6+(((x)&3)<<3))) /* Left Channel Out */
162#define BA0_FCHS_MRP(x) (1<<(5+(((x)&3)<<3))) /* Move Read Pointer */
163#define BA0_FCHS_FE(x) (1<<(4+(((x)&3)<<3))) /* FIFO Empty */
164#define BA0_FCHS_FF(x) (1<<(3+(((x)&3)<<3))) /* FIFO Full */
165#define BA0_FCHS_IOR(x) (1<<(2+(((x)&3)<<3))) /* Internal Overrun Flag */
166#define BA0_FCHS_RCI(x) (1<<(1+(((x)&3)<<3))) /* Right Channel In */
167#define BA0_FCHS_LCI(x) (1<<(0+(((x)&3)<<3))) /* Left Channel In */
168
169#define BA0_FSIC0 0x0210 /* FIFO Status and Interrupt Control 0 */
170#define BA0_FSIC1 0x0214 /* FIFO Status and Interrupt Control 1 */
171#define BA0_FSIC2 0x0218 /* FIFO Status and Interrupt Control 2 */
172#define BA0_FSIC3 0x021c /* FIFO Status and Interrupt Control 3 */
173
174#define BA0_FSIC_FIC(x) (((x)&0x7f)<<24) /* FIFO Interrupt Count */
175#define BA0_FSIC_FORIE (1<<23) /* FIFO OverRun Interrupt Enable */
176#define BA0_FSIC_FURIE (1<<22) /* FIFO UnderRun Interrupt Enable */
177#define BA0_FSIC_FSCIE (1<<16) /* FIFO Sample Count Interrupt Enable */
178#define BA0_FSIC_FSC(x) (((x)&0x7f)<<8) /* FIFO Sample Count */
179#define BA0_FSIC_FOR (1<<7) /* FIFO OverRun */
180#define BA0_FSIC_FUR (1<<6) /* FIFO UnderRun */
181#define BA0_FSIC_FSCR (1<<0) /* FIFO Sample Count Reached */
182
183#define BA0_PMCS 0x0344 /* Power Management Control/Status */
184#define BA0_CWPR 0x03e0 /* Configuration Write Protect */
185
186#define BA0_EPPMC 0x03e4 /* Extended PCI Power Management Control */
187#define BA0_EPPMC_FPDN (1<<14) /* Full Power DowN */
188
189#define BA0_GPIOR 0x03e8 /* GPIO Pin Interface Register */
190
191#define BA0_SPMC 0x03ec /* Serial Port Power Management Control (& ASDIN2 enable) */
192#define BA0_SPMC_GIPPEN (1<<15) /* GP INT Primary PME# Enable */
193#define BA0_SPMC_GISPEN (1<<14) /* GP INT Secondary PME# Enable */
194#define BA0_SPMC_EESPD (1<<9) /* EEPROM Serial Port Disable */
195#define BA0_SPMC_ASDI2E (1<<8) /* ASDIN2 Enable */
196#define BA0_SPMC_ASDO (1<<7) /* Asynchronous ASDOUT Assertion */
197#define BA0_SPMC_WUP2 (1<<3) /* Wakeup for Secondary Input */
198#define BA0_SPMC_WUP1 (1<<2) /* Wakeup for Primary Input */
199#define BA0_SPMC_ASYNC (1<<1) /* Asynchronous ASYNC Assertion */
200#define BA0_SPMC_RSTN (1<<0) /* Reset Not! */
201
202#define BA0_CFLR 0x03f0 /* Configuration Load Register (EEPROM or BIOS) */
203#define BA0_CFLR_DEFAULT 0x00000001 /* CFLR must be in AC97 link mode */
204#define BA0_IISR 0x03f4 /* ISA Interrupt Select */
205#define BA0_TMS 0x03f8 /* Test Register */
206#define BA0_SSVID 0x03fc /* Subsystem ID register */
207
208#define BA0_CLKCR1 0x0400 /* Clock Control Register 1 */
209#define BA0_CLKCR1_CLKON (1<<25) /* Read Only */
210#define BA0_CLKCR1_DLLRDY (1<<24) /* DLL Ready */
211#define BA0_CLKCR1_DLLOS (1<<6) /* DLL Output Select */
212#define BA0_CLKCR1_SWCE (1<<5) /* Clock Enable */
213#define BA0_CLKCR1_DLLP (1<<4) /* DLL PowerUp */
214#define BA0_CLKCR1_DLLSS (((x)&3)<<3) /* DLL Source Select */
215
216#define BA0_FRR 0x0410 /* Feature Reporting Register */
217#define BA0_SLT12O 0x041c /* Slot 12 GPIO Output Register for AC-Link */
218
219#define BA0_SERMC 0x0420 /* Serial Port Master Control */
220#define BA0_SERMC_FCRN (1<<27) /* Force Codec Ready Not */
221#define BA0_SERMC_ODSEN2 (1<<25) /* On-Demand Support Enable ASDIN2 */
222#define BA0_SERMC_ODSEN1 (1<<24) /* On-Demand Support Enable ASDIN1 */
223#define BA0_SERMC_SXLB (1<<21) /* ASDIN2 to ASDOUT Loopback */
224#define BA0_SERMC_SLB (1<<20) /* ASDOUT to ASDIN2 Loopback */
225#define BA0_SERMC_LOVF (1<<19) /* Loopback Output Valid Frame bit */
226#define BA0_SERMC_TCID(x) (((x)&3)<<16) /* Target Secondary Codec ID */
227#define BA0_SERMC_PXLB (5<<1) /* Primary Port External Loopback */
228#define BA0_SERMC_PLB (4<<1) /* Primary Port Internal Loopback */
229#define BA0_SERMC_PTC (7<<1) /* Port Timing Configuration */
230#define BA0_SERMC_PTC_AC97 (1<<1) /* AC97 mode */
231#define BA0_SERMC_MSPE (1<<0) /* Master Serial Port Enable */
232
233#define BA0_SERC1 0x0428 /* Serial Port Configuration 1 */
234#define BA0_SERC1_SO1F(x) (((x)&7)>>1) /* Primary Output Port Format */
235#define BA0_SERC1_AC97 (1<<1)
236#define BA0_SERC1_SO1EN (1<<0) /* Primary Output Port Enable */
237
238#define BA0_SERC2 0x042c /* Serial Port Configuration 2 */
239#define BA0_SERC2_SI1F(x) (((x)&7)>>1) /* Primary Input Port Format */
240#define BA0_SERC2_AC97 (1<<1)
241#define BA0_SERC2_SI1EN (1<<0) /* Primary Input Port Enable */
242
243#define BA0_SLT12M 0x045c /* Slot 12 Monitor Register for Primary AC-Link */
244
245#define BA0_ACCTL 0x0460 /* AC'97 Control */
246#define BA0_ACCTL_TC (1<<6) /* Target Codec */
247#define BA0_ACCTL_CRW (1<<4) /* 0=Write, 1=Read Command */
248#define BA0_ACCTL_DCV (1<<3) /* Dynamic Command Valid */
249#define BA0_ACCTL_VFRM (1<<2) /* Valid Frame */
250#define BA0_ACCTL_ESYN (1<<1) /* Enable Sync */
251
252#define BA0_ACSTS 0x0464 /* AC'97 Status */
253#define BA0_ACSTS_VSTS (1<<1) /* Valid Status */
254#define BA0_ACSTS_CRDY (1<<0) /* Codec Ready */
255
256#define BA0_ACOSV 0x0468 /* AC'97 Output Slot Valid */
257#define BA0_ACOSV_SLV(x) (1<<((x)-3))
258
259#define BA0_ACCAD 0x046c /* AC'97 Command Address */
260#define BA0_ACCDA 0x0470 /* AC'97 Command Data */
261
262#define BA0_ACISV 0x0474 /* AC'97 Input Slot Valid */
263#define BA0_ACISV_SLV(x) (1<<((x)-3))
264
265#define BA0_ACSAD 0x0478 /* AC'97 Status Address */
266#define BA0_ACSDA 0x047c /* AC'97 Status Data */
267#define BA0_JSPT 0x0480 /* Joystick poll/trigger */
268#define BA0_JSCTL 0x0484 /* Joystick control */
269#define BA0_JSC1 0x0488 /* Joystick control */
270#define BA0_JSC2 0x048c /* Joystick control */
271#define BA0_JSIO 0x04a0
272
273#define BA0_MIDCR 0x0490 /* MIDI Control */
274#define BA0_MIDCR_MRST (1<<5) /* Reset MIDI Interface */
275#define BA0_MIDCR_MLB (1<<4) /* MIDI Loop Back Enable */
276#define BA0_MIDCR_TIE (1<<3) /* MIDI Transmuit Interrupt Enable */
277#define BA0_MIDCR_RIE (1<<2) /* MIDI Receive Interrupt Enable */
278#define BA0_MIDCR_RXE (1<<1) /* MIDI Receive Enable */
279#define BA0_MIDCR_TXE (1<<0) /* MIDI Transmit Enable */
280
281#define BA0_MIDCMD 0x0494 /* MIDI Command (wo) */
282
283#define BA0_MIDSR 0x0494 /* MIDI Status (ro) */
284#define BA0_MIDSR_RDA (1<<15) /* Sticky bit (RBE 1->0) */
285#define BA0_MIDSR_TBE (1<<14) /* Sticky bit (TBF 0->1) */
286#define BA0_MIDSR_RBE (1<<7) /* Receive Buffer Empty */
287#define BA0_MIDSR_TBF (1<<6) /* Transmit Buffer Full */
288
289#define BA0_MIDWP 0x0498 /* MIDI Write */
290#define BA0_MIDRP 0x049c /* MIDI Read (ro) */
291
292#define BA0_AODSD1 0x04a8 /* AC'97 On-Demand Slot Disable for primary link (ro) */
293#define BA0_AODSD1_NDS(x) (1<<((x)-3))
294
295#define BA0_AODSD2 0x04ac /* AC'97 On-Demand Slot Disable for secondary link (ro) */
296#define BA0_AODSD2_NDS(x) (1<<((x)-3))
297
298#define BA0_CFGI 0x04b0 /* Configure Interface (EEPROM interface) */
299#define BA0_SLT12M2 0x04dc /* Slot 12 Monitor Register 2 for secondary AC-link */
300#define BA0_ACSTS2 0x04e4 /* AC'97 Status Register 2 */
301#define BA0_ACISV2 0x04f4 /* AC'97 Input Slot Valid Register 2 */
302#define BA0_ACSAD2 0x04f8 /* AC'97 Status Address Register 2 */
303#define BA0_ACSDA2 0x04fc /* AC'97 Status Data Register 2 */
304#define BA0_FMSR 0x0730 /* FM Synthesis Status (ro) */
305#define BA0_B0AP 0x0730 /* FM Bank 0 Address Port (wo) */
306#define BA0_FMDP 0x0734 /* FM Data Port */
307#define BA0_B1AP 0x0738 /* FM Bank 1 Address Port */
308#define BA0_B1DP 0x073c /* FM Bank 1 Data Port */
309
310#define BA0_SSPM 0x0740 /* Sound System Power Management */
311#define BA0_SSPM_MIXEN (1<<6) /* Playback SRC + FM/Wavetable MIX */
312#define BA0_SSPM_CSRCEN (1<<5) /* Capture Sample Rate Converter Enable */
313#define BA0_SSPM_PSRCEN (1<<4) /* Playback Sample Rate Converter Enable */
314#define BA0_SSPM_JSEN (1<<3) /* Joystick Enable */
315#define BA0_SSPM_ACLEN (1<<2) /* Serial Port Engine and AC-Link Enable */
316#define BA0_SSPM_FMEN (1<<1) /* FM Synthesis Block Enable */
317
318#define BA0_DACSR 0x0744 /* DAC Sample Rate - Playback SRC */
319#define BA0_ADCSR 0x0748 /* ADC Sample Rate - Capture SRC */
320
321#define BA0_SSCR 0x074c /* Sound System Control Register */
322#define BA0_SSCR_HVS1 (1<<23) /* Hardwave Volume Step (0=1,1=2) */
323#define BA0_SSCR_MVCS (1<<19) /* Master Volume Codec Select */
324#define BA0_SSCR_MVLD (1<<18) /* Master Volume Line Out Disable */
325#define BA0_SSCR_MVAD (1<<17) /* Master Volume Alternate Out Disable */
326#define BA0_SSCR_MVMD (1<<16) /* Master Volume Mono Out Disable */
327#define BA0_SSCR_XLPSRC (1<<8) /* External SRC Loopback Mode */
328#define BA0_SSCR_LPSRC (1<<7) /* SRC Loopback Mode */
329#define BA0_SSCR_CDTX (1<<5) /* CD Transfer Data */
330#define BA0_SSCR_HVC (1<<3) /* Harware Volume Control Enable */
331
332#define BA0_FMLVC 0x0754 /* FM Synthesis Left Volume Control */
333#define BA0_FMRVC 0x0758 /* FM Synthesis Right Volume Control */
334#define BA0_SRCSA 0x075c /* SRC Slot Assignments */
335#define BA0_PPLVC 0x0760 /* PCM Playback Left Volume Control */
336#define BA0_PPRVC 0x0764 /* PCM Playback Right Volume Control */
337#define BA0_PASR 0x0768 /* playback sample rate */
338#define BA0_CASR 0x076C /* capture sample rate */
339
340/* Source Slot Numbers - Playback */
341#define SRCSLOT_LEFT_PCM_PLAYBACK 0
342#define SRCSLOT_RIGHT_PCM_PLAYBACK 1
343#define SRCSLOT_PHONE_LINE_1_DAC 2
344#define SRCSLOT_CENTER_PCM_PLAYBACK 3
345#define SRCSLOT_LEFT_SURROUND_PCM_PLAYBACK 4
346#define SRCSLOT_RIGHT_SURROUND_PCM_PLAYBACK 5
347#define SRCSLOT_LFE_PCM_PLAYBACK 6
348#define SRCSLOT_PHONE_LINE_2_DAC 7
349#define SRCSLOT_HEADSET_DAC 8
350#define SRCSLOT_LEFT_WT 29 /* invalid for BA0_SRCSA */
351#define SRCSLOT_RIGHT_WT 30 /* invalid for BA0_SRCSA */
352
353/* Source Slot Numbers - Capture */
354#define SRCSLOT_LEFT_PCM_RECORD 10
355#define SRCSLOT_RIGHT_PCM_RECORD 11
356#define SRCSLOT_PHONE_LINE_1_ADC 12
357#define SRCSLOT_MIC_ADC 13
358#define SRCSLOT_PHONE_LINE_2_ADC 17
359#define SRCSLOT_HEADSET_ADC 18
360#define SRCSLOT_SECONDARY_LEFT_PCM_RECORD 20
361#define SRCSLOT_SECONDARY_RIGHT_PCM_RECORD 21
362#define SRCSLOT_SECONDARY_PHONE_LINE_1_ADC 22
363#define SRCSLOT_SECONDARY_MIC_ADC 23
364#define SRCSLOT_SECONDARY_PHONE_LINE_2_ADC 27
365#define SRCSLOT_SECONDARY_HEADSET_ADC 28
366
367/* Source Slot Numbers - Others */
368#define SRCSLOT_POWER_DOWN 31
369
370/* MIDI modes */
371#define CS4281_MODE_OUTPUT (1<<0)
372#define CS4281_MODE_INPUT (1<<1)
373
374/* joystick bits */
375/* Bits for JSPT */
376#define JSPT_CAX 0x00000001
377#define JSPT_CAY 0x00000002
378#define JSPT_CBX 0x00000004
379#define JSPT_CBY 0x00000008
380#define JSPT_BA1 0x00000010
381#define JSPT_BA2 0x00000020
382#define JSPT_BB1 0x00000040
383#define JSPT_BB2 0x00000080
384
385/* Bits for JSCTL */
386#define JSCTL_SP_MASK 0x00000003
387#define JSCTL_SP_SLOW 0x00000000
388#define JSCTL_SP_MEDIUM_SLOW 0x00000001
389#define JSCTL_SP_MEDIUM_FAST 0x00000002
390#define JSCTL_SP_FAST 0x00000003
391#define JSCTL_ARE 0x00000004
392
393/* Data register pairs masks */
394#define JSC1_Y1V_MASK 0x0000FFFF
395#define JSC1_X1V_MASK 0xFFFF0000
396#define JSC1_Y1V_SHIFT 0
397#define JSC1_X1V_SHIFT 16
398#define JSC2_Y2V_MASK 0x0000FFFF
399#define JSC2_X2V_MASK 0xFFFF0000
400#define JSC2_Y2V_SHIFT 0
401#define JSC2_X2V_SHIFT 16
402
403/* JS GPIO */
404#define JSIO_DAX 0x00000001
405#define JSIO_DAY 0x00000002
406#define JSIO_DBX 0x00000004
407#define JSIO_DBY 0x00000008
408#define JSIO_AXOE 0x00000010
409#define JSIO_AYOE 0x00000020
410#define JSIO_BXOE 0x00000040
411#define JSIO_BYOE 0x00000080
412
413/*
414 *
415 */
416
417struct cs4281_dma {
418 struct snd_pcm_substream *substream;
419 unsigned int regDBA; /* offset to DBA register */
420 unsigned int regDCA; /* offset to DCA register */
421 unsigned int regDBC; /* offset to DBC register */
422 unsigned int regDCC; /* offset to DCC register */
423 unsigned int regDMR; /* offset to DMR register */
424 unsigned int regDCR; /* offset to DCR register */
425 unsigned int regHDSR; /* offset to HDSR register */
426 unsigned int regFCR; /* offset to FCR register */
427 unsigned int regFSIC; /* offset to FSIC register */
428 unsigned int valDMR; /* DMA mode */
429 unsigned int valDCR; /* DMA command */
430 unsigned int valFCR; /* FIFO control */
431 unsigned int fifo_offset; /* FIFO offset within BA1 */
432 unsigned char left_slot; /* FIFO left slot */
433 unsigned char right_slot; /* FIFO right slot */
434 int frag; /* period number */
435};
436
437#define SUSPEND_REGISTERS 20
438
439struct cs4281 {
440 int irq;
441
442 void __iomem *ba0; /* virtual (accessible) address */
443 void __iomem *ba1; /* virtual (accessible) address */
444 unsigned long ba0_addr;
445 unsigned long ba1_addr;
446
447 int dual_codec;
448
449 struct snd_ac97_bus *ac97_bus;
450 struct snd_ac97 *ac97;
451 struct snd_ac97 *ac97_secondary;
452
453 struct pci_dev *pci;
454 struct snd_card *card;
455 struct snd_pcm *pcm;
456 struct snd_rawmidi *rmidi;
457 struct snd_rawmidi_substream *midi_input;
458 struct snd_rawmidi_substream *midi_output;
459
460 struct cs4281_dma dma[4];
461
462 unsigned char src_left_play_slot;
463 unsigned char src_right_play_slot;
464 unsigned char src_left_rec_slot;
465 unsigned char src_right_rec_slot;
466
467 unsigned int spurious_dhtc_irq;
468 unsigned int spurious_dtc_irq;
469
470 spinlock_t reg_lock;
471 unsigned int midcr;
472 unsigned int uartm;
473
474 struct gameport *gameport;
475
476#ifdef CONFIG_PM_SLEEP
477 u32 suspend_regs[SUSPEND_REGISTERS];
478#endif
479
480};
481
482static irqreturn_t snd_cs4281_interrupt(int irq, void *dev_id);
483
484static const struct pci_device_id snd_cs4281_ids[] = {
485 { PCI_VDEVICE(CIRRUS, 0x6005), 0, }, /* CS4281 */
486 { 0, }
487};
488
489MODULE_DEVICE_TABLE(pci, snd_cs4281_ids);
490
491/*
492 * constants
493 */
494
495#define CS4281_FIFO_SIZE 32
496
497/*
498 * common I/O routines
499 */
500
501static inline void snd_cs4281_pokeBA0(struct cs4281 *chip, unsigned long offset,
502 unsigned int val)
503{
504 writel(val, chip->ba0 + offset);
505}
506
507static inline unsigned int snd_cs4281_peekBA0(struct cs4281 *chip, unsigned long offset)
508{
509 return readl(chip->ba0 + offset);
510}
511
512static void snd_cs4281_ac97_write(struct snd_ac97 *ac97,
513 unsigned short reg, unsigned short val)
514{
515 /*
516 * 1. Write ACCAD = Command Address Register = 46Ch for AC97 register address
517 * 2. Write ACCDA = Command Data Register = 470h for data to write to AC97
518 * 3. Write ACCTL = Control Register = 460h for initiating the write
519 * 4. Read ACCTL = 460h, DCV should be reset by now and 460h = 07h
520 * 5. if DCV not cleared, break and return error
521 */
522 struct cs4281 *chip = ac97->private_data;
523 int count;
524
525 /*
526 * Setup the AC97 control registers on the CS461x to send the
527 * appropriate command to the AC97 to perform the read.
528 * ACCAD = Command Address Register = 46Ch
529 * ACCDA = Command Data Register = 470h
530 * ACCTL = Control Register = 460h
531 * set DCV - will clear when process completed
532 * reset CRW - Write command
533 * set VFRM - valid frame enabled
534 * set ESYN - ASYNC generation enabled
535 * set RSTN - ARST# inactive, AC97 codec not reset
536 */
537 snd_cs4281_pokeBA0(chip, BA0_ACCAD, reg);
538 snd_cs4281_pokeBA0(chip, BA0_ACCDA, val);
539 snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_DCV | BA0_ACCTL_VFRM |
540 BA0_ACCTL_ESYN | (ac97->num ? BA0_ACCTL_TC : 0));
541 for (count = 0; count < 2000; count++) {
542 /*
543 * First, we want to wait for a short time.
544 */
545 udelay(10);
546 /*
547 * Now, check to see if the write has completed.
548 * ACCTL = 460h, DCV should be reset by now and 460h = 07h
549 */
550 if (!(snd_cs4281_peekBA0(chip, BA0_ACCTL) & BA0_ACCTL_DCV)) {
551 return;
552 }
553 }
554 dev_err(chip->card->dev,
555 "AC'97 write problem, reg = 0x%x, val = 0x%x\n", reg, val);
556}
557
558static unsigned short snd_cs4281_ac97_read(struct snd_ac97 *ac97,
559 unsigned short reg)
560{
561 struct cs4281 *chip = ac97->private_data;
562 int count;
563 unsigned short result;
564 // FIXME: volatile is necessary in the following due to a bug of
565 // some gcc versions
566 volatile int ac97_num = ((volatile struct snd_ac97 *)ac97)->num;
567
568 /*
569 * 1. Write ACCAD = Command Address Register = 46Ch for AC97 register address
570 * 2. Write ACCDA = Command Data Register = 470h for data to write to AC97
571 * 3. Write ACCTL = Control Register = 460h for initiating the write
572 * 4. Read ACCTL = 460h, DCV should be reset by now and 460h = 17h
573 * 5. if DCV not cleared, break and return error
574 * 6. Read ACSTS = Status Register = 464h, check VSTS bit
575 */
576
577 snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSDA2 : BA0_ACSDA);
578
579 /*
580 * Setup the AC97 control registers on the CS461x to send the
581 * appropriate command to the AC97 to perform the read.
582 * ACCAD = Command Address Register = 46Ch
583 * ACCDA = Command Data Register = 470h
584 * ACCTL = Control Register = 460h
585 * set DCV - will clear when process completed
586 * set CRW - Read command
587 * set VFRM - valid frame enabled
588 * set ESYN - ASYNC generation enabled
589 * set RSTN - ARST# inactive, AC97 codec not reset
590 */
591
592 snd_cs4281_pokeBA0(chip, BA0_ACCAD, reg);
593 snd_cs4281_pokeBA0(chip, BA0_ACCDA, 0);
594 snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_DCV | BA0_ACCTL_CRW |
595 BA0_ACCTL_VFRM | BA0_ACCTL_ESYN |
596 (ac97_num ? BA0_ACCTL_TC : 0));
597
598
599 /*
600 * Wait for the read to occur.
601 */
602 for (count = 0; count < 500; count++) {
603 /*
604 * First, we want to wait for a short time.
605 */
606 udelay(10);
607 /*
608 * Now, check to see if the read has completed.
609 * ACCTL = 460h, DCV should be reset by now and 460h = 17h
610 */
611 if (!(snd_cs4281_peekBA0(chip, BA0_ACCTL) & BA0_ACCTL_DCV))
612 goto __ok1;
613 }
614
615 dev_err(chip->card->dev,
616 "AC'97 read problem (ACCTL_DCV), reg = 0x%x\n", reg);
617 result = 0xffff;
618 goto __end;
619
620 __ok1:
621 /*
622 * Wait for the valid status bit to go active.
623 */
624 for (count = 0; count < 100; count++) {
625 /*
626 * Read the AC97 status register.
627 * ACSTS = Status Register = 464h
628 * VSTS - Valid Status
629 */
630 if (snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSTS2 : BA0_ACSTS) & BA0_ACSTS_VSTS)
631 goto __ok2;
632 udelay(10);
633 }
634
635 dev_err(chip->card->dev,
636 "AC'97 read problem (ACSTS_VSTS), reg = 0x%x\n", reg);
637 result = 0xffff;
638 goto __end;
639
640 __ok2:
641 /*
642 * Read the data returned from the AC97 register.
643 * ACSDA = Status Data Register = 474h
644 */
645 result = snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSDA2 : BA0_ACSDA);
646
647 __end:
648 return result;
649}
650
651/*
652 * PCM part
653 */
654
655static int snd_cs4281_trigger(struct snd_pcm_substream *substream, int cmd)
656{
657 struct cs4281_dma *dma = substream->runtime->private_data;
658 struct cs4281 *chip = snd_pcm_substream_chip(substream);
659
660 spin_lock(&chip->reg_lock);
661 switch (cmd) {
662 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
663 dma->valDCR |= BA0_DCR_MSK;
664 dma->valFCR |= BA0_FCR_FEN;
665 break;
666 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
667 dma->valDCR &= ~BA0_DCR_MSK;
668 dma->valFCR &= ~BA0_FCR_FEN;
669 break;
670 case SNDRV_PCM_TRIGGER_START:
671 case SNDRV_PCM_TRIGGER_RESUME:
672 snd_cs4281_pokeBA0(chip, dma->regDMR, dma->valDMR & ~BA0_DMR_DMA);
673 dma->valDMR |= BA0_DMR_DMA;
674 dma->valDCR &= ~BA0_DCR_MSK;
675 dma->valFCR |= BA0_FCR_FEN;
676 break;
677 case SNDRV_PCM_TRIGGER_STOP:
678 case SNDRV_PCM_TRIGGER_SUSPEND:
679 dma->valDMR &= ~(BA0_DMR_DMA|BA0_DMR_POLL);
680 dma->valDCR |= BA0_DCR_MSK;
681 dma->valFCR &= ~BA0_FCR_FEN;
682 /* Leave wave playback FIFO enabled for FM */
683 if (dma->regFCR != BA0_FCR0)
684 dma->valFCR &= ~BA0_FCR_FEN;
685 break;
686 default:
687 spin_unlock(&chip->reg_lock);
688 return -EINVAL;
689 }
690 snd_cs4281_pokeBA0(chip, dma->regDMR, dma->valDMR);
691 snd_cs4281_pokeBA0(chip, dma->regFCR, dma->valFCR);
692 snd_cs4281_pokeBA0(chip, dma->regDCR, dma->valDCR);
693 spin_unlock(&chip->reg_lock);
694 return 0;
695}
696
697static unsigned int snd_cs4281_rate(unsigned int rate, unsigned int *real_rate)
698{
699 unsigned int val;
700
701 if (real_rate)
702 *real_rate = rate;
703 /* special "hardcoded" rates */
704 switch (rate) {
705 case 8000: return 5;
706 case 11025: return 4;
707 case 16000: return 3;
708 case 22050: return 2;
709 case 44100: return 1;
710 case 48000: return 0;
711 default:
712 break;
713 }
714 val = 1536000 / rate;
715 if (real_rate)
716 *real_rate = 1536000 / val;
717 return val;
718}
719
720static void snd_cs4281_mode(struct cs4281 *chip, struct cs4281_dma *dma,
721 struct snd_pcm_runtime *runtime,
722 int capture, int src)
723{
724 int rec_mono;
725
726 dma->valDMR = BA0_DMR_TYPE_SINGLE | BA0_DMR_AUTO |
727 (capture ? BA0_DMR_TR_WRITE : BA0_DMR_TR_READ);
728 if (runtime->channels == 1)
729 dma->valDMR |= BA0_DMR_MONO;
730 if (snd_pcm_format_unsigned(runtime->format) > 0)
731 dma->valDMR |= BA0_DMR_USIGN;
732 if (snd_pcm_format_big_endian(runtime->format) > 0)
733 dma->valDMR |= BA0_DMR_BEND;
734 switch (snd_pcm_format_width(runtime->format)) {
735 case 8: dma->valDMR |= BA0_DMR_SIZE8;
736 if (runtime->channels == 1)
737 dma->valDMR |= BA0_DMR_SWAPC;
738 break;
739 case 32: dma->valDMR |= BA0_DMR_SIZE20; break;
740 }
741 dma->frag = 0; /* for workaround */
742 dma->valDCR = BA0_DCR_TCIE | BA0_DCR_MSK;
743 if (runtime->buffer_size != runtime->period_size)
744 dma->valDCR |= BA0_DCR_HTCIE;
745 /* Initialize DMA */
746 snd_cs4281_pokeBA0(chip, dma->regDBA, runtime->dma_addr);
747 snd_cs4281_pokeBA0(chip, dma->regDBC, runtime->buffer_size - 1);
748 rec_mono = (chip->dma[1].valDMR & BA0_DMR_MONO) == BA0_DMR_MONO;
749 snd_cs4281_pokeBA0(chip, BA0_SRCSA, (chip->src_left_play_slot << 0) |
750 (chip->src_right_play_slot << 8) |
751 (chip->src_left_rec_slot << 16) |
752 ((rec_mono ? 31 : chip->src_right_rec_slot) << 24));
753 if (!src)
754 goto __skip_src;
755 if (!capture) {
756 if (dma->left_slot == chip->src_left_play_slot) {
757 unsigned int val = snd_cs4281_rate(runtime->rate, NULL);
758 snd_BUG_ON(dma->right_slot != chip->src_right_play_slot);
759 snd_cs4281_pokeBA0(chip, BA0_DACSR, val);
760 }
761 } else {
762 if (dma->left_slot == chip->src_left_rec_slot) {
763 unsigned int val = snd_cs4281_rate(runtime->rate, NULL);
764 snd_BUG_ON(dma->right_slot != chip->src_right_rec_slot);
765 snd_cs4281_pokeBA0(chip, BA0_ADCSR, val);
766 }
767 }
768 __skip_src:
769 /* Deactivate wave playback FIFO before changing slot assignments */
770 if (dma->regFCR == BA0_FCR0)
771 snd_cs4281_pokeBA0(chip, dma->regFCR, snd_cs4281_peekBA0(chip, dma->regFCR) & ~BA0_FCR_FEN);
772 /* Initialize FIFO */
773 dma->valFCR = BA0_FCR_LS(dma->left_slot) |
774 BA0_FCR_RS(capture && (dma->valDMR & BA0_DMR_MONO) ? 31 : dma->right_slot) |
775 BA0_FCR_SZ(CS4281_FIFO_SIZE) |
776 BA0_FCR_OF(dma->fifo_offset);
777 snd_cs4281_pokeBA0(chip, dma->regFCR, dma->valFCR | (capture ? BA0_FCR_PSH : 0));
778 /* Activate FIFO again for FM playback */
779 if (dma->regFCR == BA0_FCR0)
780 snd_cs4281_pokeBA0(chip, dma->regFCR, dma->valFCR | BA0_FCR_FEN);
781 /* Clear FIFO Status and Interrupt Control Register */
782 snd_cs4281_pokeBA0(chip, dma->regFSIC, 0);
783}
784
785static int snd_cs4281_playback_prepare(struct snd_pcm_substream *substream)
786{
787 struct snd_pcm_runtime *runtime = substream->runtime;
788 struct cs4281_dma *dma = runtime->private_data;
789 struct cs4281 *chip = snd_pcm_substream_chip(substream);
790
791 spin_lock_irq(&chip->reg_lock);
792 snd_cs4281_mode(chip, dma, runtime, 0, 1);
793 spin_unlock_irq(&chip->reg_lock);
794 return 0;
795}
796
797static int snd_cs4281_capture_prepare(struct snd_pcm_substream *substream)
798{
799 struct snd_pcm_runtime *runtime = substream->runtime;
800 struct cs4281_dma *dma = runtime->private_data;
801 struct cs4281 *chip = snd_pcm_substream_chip(substream);
802
803 spin_lock_irq(&chip->reg_lock);
804 snd_cs4281_mode(chip, dma, runtime, 1, 1);
805 spin_unlock_irq(&chip->reg_lock);
806 return 0;
807}
808
809static snd_pcm_uframes_t snd_cs4281_pointer(struct snd_pcm_substream *substream)
810{
811 struct snd_pcm_runtime *runtime = substream->runtime;
812 struct cs4281_dma *dma = runtime->private_data;
813 struct cs4281 *chip = snd_pcm_substream_chip(substream);
814
815 /*
816 dev_dbg(chip->card->dev,
817 "DCC = 0x%x, buffer_size = 0x%x, jiffies = %li\n",
818 snd_cs4281_peekBA0(chip, dma->regDCC), runtime->buffer_size,
819 jiffies);
820 */
821 return runtime->buffer_size -
822 snd_cs4281_peekBA0(chip, dma->regDCC) - 1;
823}
824
825static const struct snd_pcm_hardware snd_cs4281_playback =
826{
827 .info = SNDRV_PCM_INFO_MMAP |
828 SNDRV_PCM_INFO_INTERLEAVED |
829 SNDRV_PCM_INFO_MMAP_VALID |
830 SNDRV_PCM_INFO_PAUSE |
831 SNDRV_PCM_INFO_RESUME,
832 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
833 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_S16_LE |
834 SNDRV_PCM_FMTBIT_U16_BE | SNDRV_PCM_FMTBIT_S16_BE |
835 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_S32_LE |
836 SNDRV_PCM_FMTBIT_U32_BE | SNDRV_PCM_FMTBIT_S32_BE,
837 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
838 .rate_min = 4000,
839 .rate_max = 48000,
840 .channels_min = 1,
841 .channels_max = 2,
842 .buffer_bytes_max = (512*1024),
843 .period_bytes_min = 64,
844 .period_bytes_max = (512*1024),
845 .periods_min = 1,
846 .periods_max = 2,
847 .fifo_size = CS4281_FIFO_SIZE,
848};
849
850static const struct snd_pcm_hardware snd_cs4281_capture =
851{
852 .info = SNDRV_PCM_INFO_MMAP |
853 SNDRV_PCM_INFO_INTERLEAVED |
854 SNDRV_PCM_INFO_MMAP_VALID |
855 SNDRV_PCM_INFO_PAUSE |
856 SNDRV_PCM_INFO_RESUME,
857 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
858 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_S16_LE |
859 SNDRV_PCM_FMTBIT_U16_BE | SNDRV_PCM_FMTBIT_S16_BE |
860 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_S32_LE |
861 SNDRV_PCM_FMTBIT_U32_BE | SNDRV_PCM_FMTBIT_S32_BE,
862 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
863 .rate_min = 4000,
864 .rate_max = 48000,
865 .channels_min = 1,
866 .channels_max = 2,
867 .buffer_bytes_max = (512*1024),
868 .period_bytes_min = 64,
869 .period_bytes_max = (512*1024),
870 .periods_min = 1,
871 .periods_max = 2,
872 .fifo_size = CS4281_FIFO_SIZE,
873};
874
875static int snd_cs4281_playback_open(struct snd_pcm_substream *substream)
876{
877 struct cs4281 *chip = snd_pcm_substream_chip(substream);
878 struct snd_pcm_runtime *runtime = substream->runtime;
879 struct cs4281_dma *dma;
880
881 dma = &chip->dma[0];
882 dma->substream = substream;
883 dma->left_slot = 0;
884 dma->right_slot = 1;
885 runtime->private_data = dma;
886 runtime->hw = snd_cs4281_playback;
887 /* should be detected from the AC'97 layer, but it seems
888 that although CS4297A rev B reports 18-bit ADC resolution,
889 samples are 20-bit */
890 snd_pcm_hw_constraint_msbits(runtime, 0, 32, 20);
891 return 0;
892}
893
894static int snd_cs4281_capture_open(struct snd_pcm_substream *substream)
895{
896 struct cs4281 *chip = snd_pcm_substream_chip(substream);
897 struct snd_pcm_runtime *runtime = substream->runtime;
898 struct cs4281_dma *dma;
899
900 dma = &chip->dma[1];
901 dma->substream = substream;
902 dma->left_slot = 10;
903 dma->right_slot = 11;
904 runtime->private_data = dma;
905 runtime->hw = snd_cs4281_capture;
906 /* should be detected from the AC'97 layer, but it seems
907 that although CS4297A rev B reports 18-bit ADC resolution,
908 samples are 20-bit */
909 snd_pcm_hw_constraint_msbits(runtime, 0, 32, 20);
910 return 0;
911}
912
913static int snd_cs4281_playback_close(struct snd_pcm_substream *substream)
914{
915 struct cs4281_dma *dma = substream->runtime->private_data;
916
917 dma->substream = NULL;
918 return 0;
919}
920
921static int snd_cs4281_capture_close(struct snd_pcm_substream *substream)
922{
923 struct cs4281_dma *dma = substream->runtime->private_data;
924
925 dma->substream = NULL;
926 return 0;
927}
928
929static const struct snd_pcm_ops snd_cs4281_playback_ops = {
930 .open = snd_cs4281_playback_open,
931 .close = snd_cs4281_playback_close,
932 .prepare = snd_cs4281_playback_prepare,
933 .trigger = snd_cs4281_trigger,
934 .pointer = snd_cs4281_pointer,
935};
936
937static const struct snd_pcm_ops snd_cs4281_capture_ops = {
938 .open = snd_cs4281_capture_open,
939 .close = snd_cs4281_capture_close,
940 .prepare = snd_cs4281_capture_prepare,
941 .trigger = snd_cs4281_trigger,
942 .pointer = snd_cs4281_pointer,
943};
944
945static int snd_cs4281_pcm(struct cs4281 *chip, int device)
946{
947 struct snd_pcm *pcm;
948 int err;
949
950 err = snd_pcm_new(chip->card, "CS4281", device, 1, 1, &pcm);
951 if (err < 0)
952 return err;
953
954 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_cs4281_playback_ops);
955 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cs4281_capture_ops);
956
957 pcm->private_data = chip;
958 pcm->info_flags = 0;
959 strcpy(pcm->name, "CS4281");
960 chip->pcm = pcm;
961
962 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
963 64*1024, 512*1024);
964
965 return 0;
966}
967
968/*
969 * Mixer section
970 */
971
972#define CS_VOL_MASK 0x1f
973
974static int snd_cs4281_info_volume(struct snd_kcontrol *kcontrol,
975 struct snd_ctl_elem_info *uinfo)
976{
977 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
978 uinfo->count = 2;
979 uinfo->value.integer.min = 0;
980 uinfo->value.integer.max = CS_VOL_MASK;
981 return 0;
982}
983
984static int snd_cs4281_get_volume(struct snd_kcontrol *kcontrol,
985 struct snd_ctl_elem_value *ucontrol)
986{
987 struct cs4281 *chip = snd_kcontrol_chip(kcontrol);
988 int regL = (kcontrol->private_value >> 16) & 0xffff;
989 int regR = kcontrol->private_value & 0xffff;
990 int volL, volR;
991
992 volL = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regL) & CS_VOL_MASK);
993 volR = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regR) & CS_VOL_MASK);
994
995 ucontrol->value.integer.value[0] = volL;
996 ucontrol->value.integer.value[1] = volR;
997 return 0;
998}
999
1000static int snd_cs4281_put_volume(struct snd_kcontrol *kcontrol,
1001 struct snd_ctl_elem_value *ucontrol)
1002{
1003 struct cs4281 *chip = snd_kcontrol_chip(kcontrol);
1004 int change = 0;
1005 int regL = (kcontrol->private_value >> 16) & 0xffff;
1006 int regR = kcontrol->private_value & 0xffff;
1007 int volL, volR;
1008
1009 volL = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regL) & CS_VOL_MASK);
1010 volR = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regR) & CS_VOL_MASK);
1011
1012 if (ucontrol->value.integer.value[0] != volL) {
1013 volL = CS_VOL_MASK - (ucontrol->value.integer.value[0] & CS_VOL_MASK);
1014 snd_cs4281_pokeBA0(chip, regL, volL);
1015 change = 1;
1016 }
1017 if (ucontrol->value.integer.value[1] != volR) {
1018 volR = CS_VOL_MASK - (ucontrol->value.integer.value[1] & CS_VOL_MASK);
1019 snd_cs4281_pokeBA0(chip, regR, volR);
1020 change = 1;
1021 }
1022 return change;
1023}
1024
1025static const DECLARE_TLV_DB_SCALE(db_scale_dsp, -4650, 150, 0);
1026
1027static const struct snd_kcontrol_new snd_cs4281_fm_vol =
1028{
1029 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1030 .name = "Synth Playback Volume",
1031 .info = snd_cs4281_info_volume,
1032 .get = snd_cs4281_get_volume,
1033 .put = snd_cs4281_put_volume,
1034 .private_value = ((BA0_FMLVC << 16) | BA0_FMRVC),
1035 .tlv = { .p = db_scale_dsp },
1036};
1037
1038static const struct snd_kcontrol_new snd_cs4281_pcm_vol =
1039{
1040 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1041 .name = "PCM Stream Playback Volume",
1042 .info = snd_cs4281_info_volume,
1043 .get = snd_cs4281_get_volume,
1044 .put = snd_cs4281_put_volume,
1045 .private_value = ((BA0_PPLVC << 16) | BA0_PPRVC),
1046 .tlv = { .p = db_scale_dsp },
1047};
1048
1049static void snd_cs4281_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1050{
1051 struct cs4281 *chip = bus->private_data;
1052 chip->ac97_bus = NULL;
1053}
1054
1055static void snd_cs4281_mixer_free_ac97(struct snd_ac97 *ac97)
1056{
1057 struct cs4281 *chip = ac97->private_data;
1058 if (ac97->num)
1059 chip->ac97_secondary = NULL;
1060 else
1061 chip->ac97 = NULL;
1062}
1063
1064static int snd_cs4281_mixer(struct cs4281 *chip)
1065{
1066 struct snd_card *card = chip->card;
1067 struct snd_ac97_template ac97;
1068 int err;
1069 static const struct snd_ac97_bus_ops ops = {
1070 .write = snd_cs4281_ac97_write,
1071 .read = snd_cs4281_ac97_read,
1072 };
1073
1074 err = snd_ac97_bus(card, 0, &ops, chip, &chip->ac97_bus);
1075 if (err < 0)
1076 return err;
1077 chip->ac97_bus->private_free = snd_cs4281_mixer_free_ac97_bus;
1078
1079 memset(&ac97, 0, sizeof(ac97));
1080 ac97.private_data = chip;
1081 ac97.private_free = snd_cs4281_mixer_free_ac97;
1082 err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97);
1083 if (err < 0)
1084 return err;
1085 if (chip->dual_codec) {
1086 ac97.num = 1;
1087 err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97_secondary);
1088 if (err < 0)
1089 return err;
1090 }
1091 err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4281_fm_vol, chip));
1092 if (err < 0)
1093 return err;
1094 err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4281_pcm_vol, chip));
1095 if (err < 0)
1096 return err;
1097 return 0;
1098}
1099
1100
1101/*
1102 * proc interface
1103 */
1104
1105static void snd_cs4281_proc_read(struct snd_info_entry *entry,
1106 struct snd_info_buffer *buffer)
1107{
1108 struct cs4281 *chip = entry->private_data;
1109
1110 snd_iprintf(buffer, "Cirrus Logic CS4281\n\n");
1111 snd_iprintf(buffer, "Spurious half IRQs : %u\n", chip->spurious_dhtc_irq);
1112 snd_iprintf(buffer, "Spurious end IRQs : %u\n", chip->spurious_dtc_irq);
1113}
1114
1115static ssize_t snd_cs4281_BA0_read(struct snd_info_entry *entry,
1116 void *file_private_data,
1117 struct file *file, char __user *buf,
1118 size_t count, loff_t pos)
1119{
1120 struct cs4281 *chip = entry->private_data;
1121
1122 if (copy_to_user_fromio(buf, chip->ba0 + pos, count))
1123 return -EFAULT;
1124 return count;
1125}
1126
1127static ssize_t snd_cs4281_BA1_read(struct snd_info_entry *entry,
1128 void *file_private_data,
1129 struct file *file, char __user *buf,
1130 size_t count, loff_t pos)
1131{
1132 struct cs4281 *chip = entry->private_data;
1133
1134 if (copy_to_user_fromio(buf, chip->ba1 + pos, count))
1135 return -EFAULT;
1136 return count;
1137}
1138
1139static const struct snd_info_entry_ops snd_cs4281_proc_ops_BA0 = {
1140 .read = snd_cs4281_BA0_read,
1141};
1142
1143static const struct snd_info_entry_ops snd_cs4281_proc_ops_BA1 = {
1144 .read = snd_cs4281_BA1_read,
1145};
1146
1147static void snd_cs4281_proc_init(struct cs4281 *chip)
1148{
1149 struct snd_info_entry *entry;
1150
1151 snd_card_ro_proc_new(chip->card, "cs4281", chip, snd_cs4281_proc_read);
1152 if (! snd_card_proc_new(chip->card, "cs4281_BA0", &entry)) {
1153 entry->content = SNDRV_INFO_CONTENT_DATA;
1154 entry->private_data = chip;
1155 entry->c.ops = &snd_cs4281_proc_ops_BA0;
1156 entry->size = CS4281_BA0_SIZE;
1157 }
1158 if (! snd_card_proc_new(chip->card, "cs4281_BA1", &entry)) {
1159 entry->content = SNDRV_INFO_CONTENT_DATA;
1160 entry->private_data = chip;
1161 entry->c.ops = &snd_cs4281_proc_ops_BA1;
1162 entry->size = CS4281_BA1_SIZE;
1163 }
1164}
1165
1166/*
1167 * joystick support
1168 */
1169
1170#if IS_REACHABLE(CONFIG_GAMEPORT)
1171
1172static void snd_cs4281_gameport_trigger(struct gameport *gameport)
1173{
1174 struct cs4281 *chip = gameport_get_port_data(gameport);
1175
1176 if (snd_BUG_ON(!chip))
1177 return;
1178 snd_cs4281_pokeBA0(chip, BA0_JSPT, 0xff);
1179}
1180
1181static unsigned char snd_cs4281_gameport_read(struct gameport *gameport)
1182{
1183 struct cs4281 *chip = gameport_get_port_data(gameport);
1184
1185 if (snd_BUG_ON(!chip))
1186 return 0;
1187 return snd_cs4281_peekBA0(chip, BA0_JSPT);
1188}
1189
1190#ifdef COOKED_MODE
1191static int snd_cs4281_gameport_cooked_read(struct gameport *gameport,
1192 int *axes, int *buttons)
1193{
1194 struct cs4281 *chip = gameport_get_port_data(gameport);
1195 unsigned js1, js2, jst;
1196
1197 if (snd_BUG_ON(!chip))
1198 return 0;
1199
1200 js1 = snd_cs4281_peekBA0(chip, BA0_JSC1);
1201 js2 = snd_cs4281_peekBA0(chip, BA0_JSC2);
1202 jst = snd_cs4281_peekBA0(chip, BA0_JSPT);
1203
1204 *buttons = (~jst >> 4) & 0x0F;
1205
1206 axes[0] = ((js1 & JSC1_Y1V_MASK) >> JSC1_Y1V_SHIFT) & 0xFFFF;
1207 axes[1] = ((js1 & JSC1_X1V_MASK) >> JSC1_X1V_SHIFT) & 0xFFFF;
1208 axes[2] = ((js2 & JSC2_Y2V_MASK) >> JSC2_Y2V_SHIFT) & 0xFFFF;
1209 axes[3] = ((js2 & JSC2_X2V_MASK) >> JSC2_X2V_SHIFT) & 0xFFFF;
1210
1211 for (jst = 0; jst < 4; ++jst)
1212 if (axes[jst] == 0xFFFF) axes[jst] = -1;
1213 return 0;
1214}
1215#else
1216#define snd_cs4281_gameport_cooked_read NULL
1217#endif
1218
1219static int snd_cs4281_gameport_open(struct gameport *gameport, int mode)
1220{
1221 switch (mode) {
1222#ifdef COOKED_MODE
1223 case GAMEPORT_MODE_COOKED:
1224 return 0;
1225#endif
1226 case GAMEPORT_MODE_RAW:
1227 return 0;
1228 default:
1229 return -1;
1230 }
1231 return 0;
1232}
1233
1234static int snd_cs4281_create_gameport(struct cs4281 *chip)
1235{
1236 struct gameport *gp;
1237
1238 chip->gameport = gp = gameport_allocate_port();
1239 if (!gp) {
1240 dev_err(chip->card->dev,
1241 "cannot allocate memory for gameport\n");
1242 return -ENOMEM;
1243 }
1244
1245 gameport_set_name(gp, "CS4281 Gameport");
1246 gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1247 gameport_set_dev_parent(gp, &chip->pci->dev);
1248 gp->open = snd_cs4281_gameport_open;
1249 gp->read = snd_cs4281_gameport_read;
1250 gp->trigger = snd_cs4281_gameport_trigger;
1251 gp->cooked_read = snd_cs4281_gameport_cooked_read;
1252 gameport_set_port_data(gp, chip);
1253
1254 snd_cs4281_pokeBA0(chip, BA0_JSIO, 0xFF); // ?
1255 snd_cs4281_pokeBA0(chip, BA0_JSCTL, JSCTL_SP_MEDIUM_SLOW);
1256
1257 gameport_register_port(gp);
1258
1259 return 0;
1260}
1261
1262static void snd_cs4281_free_gameport(struct cs4281 *chip)
1263{
1264 if (chip->gameport) {
1265 gameport_unregister_port(chip->gameport);
1266 chip->gameport = NULL;
1267 }
1268}
1269#else
1270static inline int snd_cs4281_create_gameport(struct cs4281 *chip) { return -ENOSYS; }
1271static inline void snd_cs4281_free_gameport(struct cs4281 *chip) { }
1272#endif /* IS_REACHABLE(CONFIG_GAMEPORT) */
1273
1274static int snd_cs4281_free(struct cs4281 *chip)
1275{
1276 snd_cs4281_free_gameport(chip);
1277
1278 /* Mask interrupts */
1279 snd_cs4281_pokeBA0(chip, BA0_HIMR, 0x7fffffff);
1280 /* Stop the DLL Clock logic. */
1281 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, 0);
1282 /* Sound System Power Management - Turn Everything OFF */
1283 snd_cs4281_pokeBA0(chip, BA0_SSPM, 0);
1284 /* PCI interface - D3 state */
1285 pci_set_power_state(chip->pci, PCI_D3hot);
1286
1287 if (chip->irq >= 0)
1288 free_irq(chip->irq, chip);
1289 iounmap(chip->ba0);
1290 iounmap(chip->ba1);
1291 pci_release_regions(chip->pci);
1292 pci_disable_device(chip->pci);
1293
1294 kfree(chip);
1295 return 0;
1296}
1297
1298static int snd_cs4281_dev_free(struct snd_device *device)
1299{
1300 struct cs4281 *chip = device->device_data;
1301 return snd_cs4281_free(chip);
1302}
1303
1304static int snd_cs4281_chip_init(struct cs4281 *chip); /* defined below */
1305
1306static int snd_cs4281_create(struct snd_card *card,
1307 struct pci_dev *pci,
1308 struct cs4281 **rchip,
1309 int dual_codec)
1310{
1311 struct cs4281 *chip;
1312 unsigned int tmp;
1313 int err;
1314 static const struct snd_device_ops ops = {
1315 .dev_free = snd_cs4281_dev_free,
1316 };
1317
1318 *rchip = NULL;
1319 err = pci_enable_device(pci);
1320 if (err < 0)
1321 return err;
1322 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1323 if (chip == NULL) {
1324 pci_disable_device(pci);
1325 return -ENOMEM;
1326 }
1327 spin_lock_init(&chip->reg_lock);
1328 chip->card = card;
1329 chip->pci = pci;
1330 chip->irq = -1;
1331 pci_set_master(pci);
1332 if (dual_codec < 0 || dual_codec > 3) {
1333 dev_err(card->dev, "invalid dual_codec option %d\n", dual_codec);
1334 dual_codec = 0;
1335 }
1336 chip->dual_codec = dual_codec;
1337
1338 err = pci_request_regions(pci, "CS4281");
1339 if (err < 0) {
1340 kfree(chip);
1341 pci_disable_device(pci);
1342 return err;
1343 }
1344 chip->ba0_addr = pci_resource_start(pci, 0);
1345 chip->ba1_addr = pci_resource_start(pci, 1);
1346
1347 chip->ba0 = pci_ioremap_bar(pci, 0);
1348 chip->ba1 = pci_ioremap_bar(pci, 1);
1349 if (!chip->ba0 || !chip->ba1) {
1350 snd_cs4281_free(chip);
1351 return -ENOMEM;
1352 }
1353
1354 if (request_irq(pci->irq, snd_cs4281_interrupt, IRQF_SHARED,
1355 KBUILD_MODNAME, chip)) {
1356 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1357 snd_cs4281_free(chip);
1358 return -ENOMEM;
1359 }
1360 chip->irq = pci->irq;
1361 card->sync_irq = chip->irq;
1362
1363 tmp = snd_cs4281_chip_init(chip);
1364 if (tmp) {
1365 snd_cs4281_free(chip);
1366 return tmp;
1367 }
1368
1369 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
1370 if (err < 0) {
1371 snd_cs4281_free(chip);
1372 return err;
1373 }
1374
1375 snd_cs4281_proc_init(chip);
1376
1377 *rchip = chip;
1378 return 0;
1379}
1380
1381static int snd_cs4281_chip_init(struct cs4281 *chip)
1382{
1383 unsigned int tmp;
1384 unsigned long end_time;
1385 int retry_count = 2;
1386
1387 /* Having EPPMC.FPDN=1 prevent proper chip initialisation */
1388 tmp = snd_cs4281_peekBA0(chip, BA0_EPPMC);
1389 if (tmp & BA0_EPPMC_FPDN)
1390 snd_cs4281_pokeBA0(chip, BA0_EPPMC, tmp & ~BA0_EPPMC_FPDN);
1391
1392 __retry:
1393 tmp = snd_cs4281_peekBA0(chip, BA0_CFLR);
1394 if (tmp != BA0_CFLR_DEFAULT) {
1395 snd_cs4281_pokeBA0(chip, BA0_CFLR, BA0_CFLR_DEFAULT);
1396 tmp = snd_cs4281_peekBA0(chip, BA0_CFLR);
1397 if (tmp != BA0_CFLR_DEFAULT) {
1398 dev_err(chip->card->dev,
1399 "CFLR setup failed (0x%x)\n", tmp);
1400 return -EIO;
1401 }
1402 }
1403
1404 /* Set the 'Configuration Write Protect' register
1405 * to 4281h. Allows vendor-defined configuration
1406 * space between 0e4h and 0ffh to be written. */
1407 snd_cs4281_pokeBA0(chip, BA0_CWPR, 0x4281);
1408
1409 tmp = snd_cs4281_peekBA0(chip, BA0_SERC1);
1410 if (tmp != (BA0_SERC1_SO1EN | BA0_SERC1_AC97)) {
1411 dev_err(chip->card->dev,
1412 "SERC1 AC'97 check failed (0x%x)\n", tmp);
1413 return -EIO;
1414 }
1415 tmp = snd_cs4281_peekBA0(chip, BA0_SERC2);
1416 if (tmp != (BA0_SERC2_SI1EN | BA0_SERC2_AC97)) {
1417 dev_err(chip->card->dev,
1418 "SERC2 AC'97 check failed (0x%x)\n", tmp);
1419 return -EIO;
1420 }
1421
1422 /* Sound System Power Management */
1423 snd_cs4281_pokeBA0(chip, BA0_SSPM, BA0_SSPM_MIXEN | BA0_SSPM_CSRCEN |
1424 BA0_SSPM_PSRCEN | BA0_SSPM_JSEN |
1425 BA0_SSPM_ACLEN | BA0_SSPM_FMEN);
1426
1427 /* Serial Port Power Management */
1428 /* Blast the clock control register to zero so that the
1429 * PLL starts out in a known state, and blast the master serial
1430 * port control register to zero so that the serial ports also
1431 * start out in a known state. */
1432 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, 0);
1433 snd_cs4281_pokeBA0(chip, BA0_SERMC, 0);
1434
1435 /* Make ESYN go to zero to turn off
1436 * the Sync pulse on the AC97 link. */
1437 snd_cs4281_pokeBA0(chip, BA0_ACCTL, 0);
1438 udelay(50);
1439
1440 /* Drive the ARST# pin low for a minimum of 1uS (as defined in the AC97
1441 * spec) and then drive it high. This is done for non AC97 modes since
1442 * there might be logic external to the CS4281 that uses the ARST# line
1443 * for a reset. */
1444 snd_cs4281_pokeBA0(chip, BA0_SPMC, 0);
1445 udelay(50);
1446 snd_cs4281_pokeBA0(chip, BA0_SPMC, BA0_SPMC_RSTN);
1447 msleep(50);
1448
1449 if (chip->dual_codec)
1450 snd_cs4281_pokeBA0(chip, BA0_SPMC, BA0_SPMC_RSTN | BA0_SPMC_ASDI2E);
1451
1452 /*
1453 * Set the serial port timing configuration.
1454 */
1455 snd_cs4281_pokeBA0(chip, BA0_SERMC,
1456 (chip->dual_codec ? BA0_SERMC_TCID(chip->dual_codec) : BA0_SERMC_TCID(1)) |
1457 BA0_SERMC_PTC_AC97 | BA0_SERMC_MSPE);
1458
1459 /*
1460 * Start the DLL Clock logic.
1461 */
1462 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, BA0_CLKCR1_DLLP);
1463 msleep(50);
1464 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, BA0_CLKCR1_SWCE | BA0_CLKCR1_DLLP);
1465
1466 /*
1467 * Wait for the DLL ready signal from the clock logic.
1468 */
1469 end_time = jiffies + HZ;
1470 do {
1471 /*
1472 * Read the AC97 status register to see if we've seen a CODEC
1473 * signal from the AC97 codec.
1474 */
1475 if (snd_cs4281_peekBA0(chip, BA0_CLKCR1) & BA0_CLKCR1_DLLRDY)
1476 goto __ok0;
1477 schedule_timeout_uninterruptible(1);
1478 } while (time_after_eq(end_time, jiffies));
1479
1480 dev_err(chip->card->dev, "DLLRDY not seen\n");
1481 return -EIO;
1482
1483 __ok0:
1484
1485 /*
1486 * The first thing we do here is to enable sync generation. As soon
1487 * as we start receiving bit clock, we'll start producing the SYNC
1488 * signal.
1489 */
1490 snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_ESYN);
1491
1492 /*
1493 * Wait for the codec ready signal from the AC97 codec.
1494 */
1495 end_time = jiffies + HZ;
1496 do {
1497 /*
1498 * Read the AC97 status register to see if we've seen a CODEC
1499 * signal from the AC97 codec.
1500 */
1501 if (snd_cs4281_peekBA0(chip, BA0_ACSTS) & BA0_ACSTS_CRDY)
1502 goto __ok1;
1503 schedule_timeout_uninterruptible(1);
1504 } while (time_after_eq(end_time, jiffies));
1505
1506 dev_err(chip->card->dev,
1507 "never read codec ready from AC'97 (0x%x)\n",
1508 snd_cs4281_peekBA0(chip, BA0_ACSTS));
1509 return -EIO;
1510
1511 __ok1:
1512 if (chip->dual_codec) {
1513 end_time = jiffies + HZ;
1514 do {
1515 if (snd_cs4281_peekBA0(chip, BA0_ACSTS2) & BA0_ACSTS_CRDY)
1516 goto __codec2_ok;
1517 schedule_timeout_uninterruptible(1);
1518 } while (time_after_eq(end_time, jiffies));
1519 dev_info(chip->card->dev,
1520 "secondary codec doesn't respond. disable it...\n");
1521 chip->dual_codec = 0;
1522 __codec2_ok: ;
1523 }
1524
1525 /*
1526 * Assert the valid frame signal so that we can start sending commands
1527 * to the AC97 codec.
1528 */
1529
1530 snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_VFRM | BA0_ACCTL_ESYN);
1531
1532 /*
1533 * Wait until we've sampled input slots 3 and 4 as valid, meaning that
1534 * the codec is pumping ADC data across the AC-link.
1535 */
1536
1537 end_time = jiffies + HZ;
1538 do {
1539 /*
1540 * Read the input slot valid register and see if input slots 3
1541 * 4 are valid yet.
1542 */
1543 if ((snd_cs4281_peekBA0(chip, BA0_ACISV) & (BA0_ACISV_SLV(3) | BA0_ACISV_SLV(4))) == (BA0_ACISV_SLV(3) | BA0_ACISV_SLV(4)))
1544 goto __ok2;
1545 schedule_timeout_uninterruptible(1);
1546 } while (time_after_eq(end_time, jiffies));
1547
1548 if (--retry_count > 0)
1549 goto __retry;
1550 dev_err(chip->card->dev, "never read ISV3 and ISV4 from AC'97\n");
1551 return -EIO;
1552
1553 __ok2:
1554
1555 /*
1556 * Now, assert valid frame and the slot 3 and 4 valid bits. This will
1557 * commense the transfer of digital audio data to the AC97 codec.
1558 */
1559 snd_cs4281_pokeBA0(chip, BA0_ACOSV, BA0_ACOSV_SLV(3) | BA0_ACOSV_SLV(4));
1560
1561 /*
1562 * Initialize DMA structures
1563 */
1564 for (tmp = 0; tmp < 4; tmp++) {
1565 struct cs4281_dma *dma = &chip->dma[tmp];
1566 dma->regDBA = BA0_DBA0 + (tmp * 0x10);
1567 dma->regDCA = BA0_DCA0 + (tmp * 0x10);
1568 dma->regDBC = BA0_DBC0 + (tmp * 0x10);
1569 dma->regDCC = BA0_DCC0 + (tmp * 0x10);
1570 dma->regDMR = BA0_DMR0 + (tmp * 8);
1571 dma->regDCR = BA0_DCR0 + (tmp * 8);
1572 dma->regHDSR = BA0_HDSR0 + (tmp * 4);
1573 dma->regFCR = BA0_FCR0 + (tmp * 4);
1574 dma->regFSIC = BA0_FSIC0 + (tmp * 4);
1575 dma->fifo_offset = tmp * CS4281_FIFO_SIZE;
1576 snd_cs4281_pokeBA0(chip, dma->regFCR,
1577 BA0_FCR_LS(31) |
1578 BA0_FCR_RS(31) |
1579 BA0_FCR_SZ(CS4281_FIFO_SIZE) |
1580 BA0_FCR_OF(dma->fifo_offset));
1581 }
1582
1583 chip->src_left_play_slot = 0; /* AC'97 left PCM playback (3) */
1584 chip->src_right_play_slot = 1; /* AC'97 right PCM playback (4) */
1585 chip->src_left_rec_slot = 10; /* AC'97 left PCM record (3) */
1586 chip->src_right_rec_slot = 11; /* AC'97 right PCM record (4) */
1587
1588 /* Activate wave playback FIFO for FM playback */
1589 chip->dma[0].valFCR = BA0_FCR_FEN | BA0_FCR_LS(0) |
1590 BA0_FCR_RS(1) |
1591 BA0_FCR_SZ(CS4281_FIFO_SIZE) |
1592 BA0_FCR_OF(chip->dma[0].fifo_offset);
1593 snd_cs4281_pokeBA0(chip, chip->dma[0].regFCR, chip->dma[0].valFCR);
1594 snd_cs4281_pokeBA0(chip, BA0_SRCSA, (chip->src_left_play_slot << 0) |
1595 (chip->src_right_play_slot << 8) |
1596 (chip->src_left_rec_slot << 16) |
1597 (chip->src_right_rec_slot << 24));
1598
1599 /* Initialize digital volume */
1600 snd_cs4281_pokeBA0(chip, BA0_PPLVC, 0);
1601 snd_cs4281_pokeBA0(chip, BA0_PPRVC, 0);
1602
1603 /* Enable IRQs */
1604 snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_EOI);
1605 /* Unmask interrupts */
1606 snd_cs4281_pokeBA0(chip, BA0_HIMR, 0x7fffffff & ~(
1607 BA0_HISR_MIDI |
1608 BA0_HISR_DMAI |
1609 BA0_HISR_DMA(0) |
1610 BA0_HISR_DMA(1) |
1611 BA0_HISR_DMA(2) |
1612 BA0_HISR_DMA(3)));
1613
1614 return 0;
1615}
1616
1617/*
1618 * MIDI section
1619 */
1620
1621static void snd_cs4281_midi_reset(struct cs4281 *chip)
1622{
1623 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr | BA0_MIDCR_MRST);
1624 udelay(100);
1625 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1626}
1627
1628static int snd_cs4281_midi_input_open(struct snd_rawmidi_substream *substream)
1629{
1630 struct cs4281 *chip = substream->rmidi->private_data;
1631
1632 spin_lock_irq(&chip->reg_lock);
1633 chip->midcr |= BA0_MIDCR_RXE;
1634 chip->midi_input = substream;
1635 if (!(chip->uartm & CS4281_MODE_OUTPUT)) {
1636 snd_cs4281_midi_reset(chip);
1637 } else {
1638 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1639 }
1640 spin_unlock_irq(&chip->reg_lock);
1641 return 0;
1642}
1643
1644static int snd_cs4281_midi_input_close(struct snd_rawmidi_substream *substream)
1645{
1646 struct cs4281 *chip = substream->rmidi->private_data;
1647
1648 spin_lock_irq(&chip->reg_lock);
1649 chip->midcr &= ~(BA0_MIDCR_RXE | BA0_MIDCR_RIE);
1650 chip->midi_input = NULL;
1651 if (!(chip->uartm & CS4281_MODE_OUTPUT)) {
1652 snd_cs4281_midi_reset(chip);
1653 } else {
1654 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1655 }
1656 chip->uartm &= ~CS4281_MODE_INPUT;
1657 spin_unlock_irq(&chip->reg_lock);
1658 return 0;
1659}
1660
1661static int snd_cs4281_midi_output_open(struct snd_rawmidi_substream *substream)
1662{
1663 struct cs4281 *chip = substream->rmidi->private_data;
1664
1665 spin_lock_irq(&chip->reg_lock);
1666 chip->uartm |= CS4281_MODE_OUTPUT;
1667 chip->midcr |= BA0_MIDCR_TXE;
1668 chip->midi_output = substream;
1669 if (!(chip->uartm & CS4281_MODE_INPUT)) {
1670 snd_cs4281_midi_reset(chip);
1671 } else {
1672 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1673 }
1674 spin_unlock_irq(&chip->reg_lock);
1675 return 0;
1676}
1677
1678static int snd_cs4281_midi_output_close(struct snd_rawmidi_substream *substream)
1679{
1680 struct cs4281 *chip = substream->rmidi->private_data;
1681
1682 spin_lock_irq(&chip->reg_lock);
1683 chip->midcr &= ~(BA0_MIDCR_TXE | BA0_MIDCR_TIE);
1684 chip->midi_output = NULL;
1685 if (!(chip->uartm & CS4281_MODE_INPUT)) {
1686 snd_cs4281_midi_reset(chip);
1687 } else {
1688 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1689 }
1690 chip->uartm &= ~CS4281_MODE_OUTPUT;
1691 spin_unlock_irq(&chip->reg_lock);
1692 return 0;
1693}
1694
1695static void snd_cs4281_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
1696{
1697 unsigned long flags;
1698 struct cs4281 *chip = substream->rmidi->private_data;
1699
1700 spin_lock_irqsave(&chip->reg_lock, flags);
1701 if (up) {
1702 if ((chip->midcr & BA0_MIDCR_RIE) == 0) {
1703 chip->midcr |= BA0_MIDCR_RIE;
1704 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1705 }
1706 } else {
1707 if (chip->midcr & BA0_MIDCR_RIE) {
1708 chip->midcr &= ~BA0_MIDCR_RIE;
1709 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1710 }
1711 }
1712 spin_unlock_irqrestore(&chip->reg_lock, flags);
1713}
1714
1715static void snd_cs4281_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
1716{
1717 unsigned long flags;
1718 struct cs4281 *chip = substream->rmidi->private_data;
1719 unsigned char byte;
1720
1721 spin_lock_irqsave(&chip->reg_lock, flags);
1722 if (up) {
1723 if ((chip->midcr & BA0_MIDCR_TIE) == 0) {
1724 chip->midcr |= BA0_MIDCR_TIE;
1725 /* fill UART FIFO buffer at first, and turn Tx interrupts only if necessary */
1726 while ((chip->midcr & BA0_MIDCR_TIE) &&
1727 (snd_cs4281_peekBA0(chip, BA0_MIDSR) & BA0_MIDSR_TBF) == 0) {
1728 if (snd_rawmidi_transmit(substream, &byte, 1) != 1) {
1729 chip->midcr &= ~BA0_MIDCR_TIE;
1730 } else {
1731 snd_cs4281_pokeBA0(chip, BA0_MIDWP, byte);
1732 }
1733 }
1734 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1735 }
1736 } else {
1737 if (chip->midcr & BA0_MIDCR_TIE) {
1738 chip->midcr &= ~BA0_MIDCR_TIE;
1739 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1740 }
1741 }
1742 spin_unlock_irqrestore(&chip->reg_lock, flags);
1743}
1744
1745static const struct snd_rawmidi_ops snd_cs4281_midi_output =
1746{
1747 .open = snd_cs4281_midi_output_open,
1748 .close = snd_cs4281_midi_output_close,
1749 .trigger = snd_cs4281_midi_output_trigger,
1750};
1751
1752static const struct snd_rawmidi_ops snd_cs4281_midi_input =
1753{
1754 .open = snd_cs4281_midi_input_open,
1755 .close = snd_cs4281_midi_input_close,
1756 .trigger = snd_cs4281_midi_input_trigger,
1757};
1758
1759static int snd_cs4281_midi(struct cs4281 *chip, int device)
1760{
1761 struct snd_rawmidi *rmidi;
1762 int err;
1763
1764 err = snd_rawmidi_new(chip->card, "CS4281", device, 1, 1, &rmidi);
1765 if (err < 0)
1766 return err;
1767 strcpy(rmidi->name, "CS4281");
1768 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_cs4281_midi_output);
1769 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_cs4281_midi_input);
1770 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT | SNDRV_RAWMIDI_INFO_DUPLEX;
1771 rmidi->private_data = chip;
1772 chip->rmidi = rmidi;
1773 return 0;
1774}
1775
1776/*
1777 * Interrupt handler
1778 */
1779
1780static irqreturn_t snd_cs4281_interrupt(int irq, void *dev_id)
1781{
1782 struct cs4281 *chip = dev_id;
1783 unsigned int status, dma, val;
1784 struct cs4281_dma *cdma;
1785
1786 if (chip == NULL)
1787 return IRQ_NONE;
1788 status = snd_cs4281_peekBA0(chip, BA0_HISR);
1789 if ((status & 0x7fffffff) == 0) {
1790 snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_EOI);
1791 return IRQ_NONE;
1792 }
1793
1794 if (status & (BA0_HISR_DMA(0)|BA0_HISR_DMA(1)|BA0_HISR_DMA(2)|BA0_HISR_DMA(3))) {
1795 for (dma = 0; dma < 4; dma++)
1796 if (status & BA0_HISR_DMA(dma)) {
1797 cdma = &chip->dma[dma];
1798 spin_lock(&chip->reg_lock);
1799 /* ack DMA IRQ */
1800 val = snd_cs4281_peekBA0(chip, cdma->regHDSR);
1801 /* workaround, sometimes CS4281 acknowledges */
1802 /* end or middle transfer position twice */
1803 cdma->frag++;
1804 if ((val & BA0_HDSR_DHTC) && !(cdma->frag & 1)) {
1805 cdma->frag--;
1806 chip->spurious_dhtc_irq++;
1807 spin_unlock(&chip->reg_lock);
1808 continue;
1809 }
1810 if ((val & BA0_HDSR_DTC) && (cdma->frag & 1)) {
1811 cdma->frag--;
1812 chip->spurious_dtc_irq++;
1813 spin_unlock(&chip->reg_lock);
1814 continue;
1815 }
1816 spin_unlock(&chip->reg_lock);
1817 snd_pcm_period_elapsed(cdma->substream);
1818 }
1819 }
1820
1821 if ((status & BA0_HISR_MIDI) && chip->rmidi) {
1822 unsigned char c;
1823
1824 spin_lock(&chip->reg_lock);
1825 while ((snd_cs4281_peekBA0(chip, BA0_MIDSR) & BA0_MIDSR_RBE) == 0) {
1826 c = snd_cs4281_peekBA0(chip, BA0_MIDRP);
1827 if ((chip->midcr & BA0_MIDCR_RIE) == 0)
1828 continue;
1829 snd_rawmidi_receive(chip->midi_input, &c, 1);
1830 }
1831 while ((snd_cs4281_peekBA0(chip, BA0_MIDSR) & BA0_MIDSR_TBF) == 0) {
1832 if ((chip->midcr & BA0_MIDCR_TIE) == 0)
1833 break;
1834 if (snd_rawmidi_transmit(chip->midi_output, &c, 1) != 1) {
1835 chip->midcr &= ~BA0_MIDCR_TIE;
1836 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1837 break;
1838 }
1839 snd_cs4281_pokeBA0(chip, BA0_MIDWP, c);
1840 }
1841 spin_unlock(&chip->reg_lock);
1842 }
1843
1844 /* EOI to the PCI part... reenables interrupts */
1845 snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_EOI);
1846
1847 return IRQ_HANDLED;
1848}
1849
1850
1851/*
1852 * OPL3 command
1853 */
1854static void snd_cs4281_opl3_command(struct snd_opl3 *opl3, unsigned short cmd,
1855 unsigned char val)
1856{
1857 unsigned long flags;
1858 struct cs4281 *chip = opl3->private_data;
1859 void __iomem *port;
1860
1861 if (cmd & OPL3_RIGHT)
1862 port = chip->ba0 + BA0_B1AP; /* right port */
1863 else
1864 port = chip->ba0 + BA0_B0AP; /* left port */
1865
1866 spin_lock_irqsave(&opl3->reg_lock, flags);
1867
1868 writel((unsigned int)cmd, port);
1869 udelay(10);
1870
1871 writel((unsigned int)val, port + 4);
1872 udelay(30);
1873
1874 spin_unlock_irqrestore(&opl3->reg_lock, flags);
1875}
1876
1877static int snd_cs4281_probe(struct pci_dev *pci,
1878 const struct pci_device_id *pci_id)
1879{
1880 static int dev;
1881 struct snd_card *card;
1882 struct cs4281 *chip;
1883 struct snd_opl3 *opl3;
1884 int err;
1885
1886 if (dev >= SNDRV_CARDS)
1887 return -ENODEV;
1888 if (!enable[dev]) {
1889 dev++;
1890 return -ENOENT;
1891 }
1892
1893 err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1894 0, &card);
1895 if (err < 0)
1896 return err;
1897
1898 err = snd_cs4281_create(card, pci, &chip, dual_codec[dev]);
1899 if (err < 0) {
1900 snd_card_free(card);
1901 return err;
1902 }
1903 card->private_data = chip;
1904
1905 err = snd_cs4281_mixer(chip);
1906 if (err < 0) {
1907 snd_card_free(card);
1908 return err;
1909 }
1910 err = snd_cs4281_pcm(chip, 0);
1911 if (err < 0) {
1912 snd_card_free(card);
1913 return err;
1914 }
1915 err = snd_cs4281_midi(chip, 0);
1916 if (err < 0) {
1917 snd_card_free(card);
1918 return err;
1919 }
1920 err = snd_opl3_new(card, OPL3_HW_OPL3_CS4281, &opl3);
1921 if (err < 0) {
1922 snd_card_free(card);
1923 return err;
1924 }
1925 opl3->private_data = chip;
1926 opl3->command = snd_cs4281_opl3_command;
1927 snd_opl3_init(opl3);
1928 err = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
1929 if (err < 0) {
1930 snd_card_free(card);
1931 return err;
1932 }
1933 snd_cs4281_create_gameport(chip);
1934 strcpy(card->driver, "CS4281");
1935 strcpy(card->shortname, "Cirrus Logic CS4281");
1936 sprintf(card->longname, "%s at 0x%lx, irq %d",
1937 card->shortname,
1938 chip->ba0_addr,
1939 chip->irq);
1940
1941 err = snd_card_register(card);
1942 if (err < 0) {
1943 snd_card_free(card);
1944 return err;
1945 }
1946
1947 pci_set_drvdata(pci, card);
1948 dev++;
1949 return 0;
1950}
1951
1952static void snd_cs4281_remove(struct pci_dev *pci)
1953{
1954 snd_card_free(pci_get_drvdata(pci));
1955}
1956
1957/*
1958 * Power Management
1959 */
1960#ifdef CONFIG_PM_SLEEP
1961
1962static const int saved_regs[SUSPEND_REGISTERS] = {
1963 BA0_JSCTL,
1964 BA0_GPIOR,
1965 BA0_SSCR,
1966 BA0_MIDCR,
1967 BA0_SRCSA,
1968 BA0_PASR,
1969 BA0_CASR,
1970 BA0_DACSR,
1971 BA0_ADCSR,
1972 BA0_FMLVC,
1973 BA0_FMRVC,
1974 BA0_PPLVC,
1975 BA0_PPRVC,
1976};
1977
1978#define CLKCR1_CKRA 0x00010000L
1979
1980static int cs4281_suspend(struct device *dev)
1981{
1982 struct snd_card *card = dev_get_drvdata(dev);
1983 struct cs4281 *chip = card->private_data;
1984 u32 ulCLK;
1985 unsigned int i;
1986
1987 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1988 snd_ac97_suspend(chip->ac97);
1989 snd_ac97_suspend(chip->ac97_secondary);
1990
1991 ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
1992 ulCLK |= CLKCR1_CKRA;
1993 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
1994
1995 /* Disable interrupts. */
1996 snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_CHGM);
1997
1998 /* remember the status registers */
1999 for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
2000 if (saved_regs[i])
2001 chip->suspend_regs[i] = snd_cs4281_peekBA0(chip, saved_regs[i]);
2002
2003 /* Turn off the serial ports. */
2004 snd_cs4281_pokeBA0(chip, BA0_SERMC, 0);
2005
2006 /* Power off FM, Joystick, AC link, */
2007 snd_cs4281_pokeBA0(chip, BA0_SSPM, 0);
2008
2009 /* DLL off. */
2010 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, 0);
2011
2012 /* AC link off. */
2013 snd_cs4281_pokeBA0(chip, BA0_SPMC, 0);
2014
2015 ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
2016 ulCLK &= ~CLKCR1_CKRA;
2017 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
2018 return 0;
2019}
2020
2021static int cs4281_resume(struct device *dev)
2022{
2023 struct snd_card *card = dev_get_drvdata(dev);
2024 struct cs4281 *chip = card->private_data;
2025 unsigned int i;
2026 u32 ulCLK;
2027
2028 ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
2029 ulCLK |= CLKCR1_CKRA;
2030 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
2031
2032 snd_cs4281_chip_init(chip);
2033
2034 /* restore the status registers */
2035 for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
2036 if (saved_regs[i])
2037 snd_cs4281_pokeBA0(chip, saved_regs[i], chip->suspend_regs[i]);
2038
2039 snd_ac97_resume(chip->ac97);
2040 snd_ac97_resume(chip->ac97_secondary);
2041
2042 ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
2043 ulCLK &= ~CLKCR1_CKRA;
2044 snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
2045
2046 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2047 return 0;
2048}
2049
2050static SIMPLE_DEV_PM_OPS(cs4281_pm, cs4281_suspend, cs4281_resume);
2051#define CS4281_PM_OPS &cs4281_pm
2052#else
2053#define CS4281_PM_OPS NULL
2054#endif /* CONFIG_PM_SLEEP */
2055
2056static struct pci_driver cs4281_driver = {
2057 .name = KBUILD_MODNAME,
2058 .id_table = snd_cs4281_ids,
2059 .probe = snd_cs4281_probe,
2060 .remove = snd_cs4281_remove,
2061 .driver = {
2062 .pm = CS4281_PM_OPS,
2063 },
2064};
2065
2066module_pci_driver(cs4281_driver);
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