diff options
Diffstat (limited to 'sound/pci/cs4281.c')
| -rw-r--r-- | sound/pci/cs4281.c | 2005 |
1 files changed, 2005 insertions, 0 deletions
diff --git a/sound/pci/cs4281.c b/sound/pci/cs4281.c new file mode 100644 index 0000000000..0c9cadf7b3 --- /dev/null +++ b/sound/pci/cs4281.c @@ -0,0 +1,2005 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Driver for Cirrus Logic CS4281 based PCI soundcard + * Copyright (c) by Jaroslav Kysela <perex@perex.cz>, + */ + +#include <linux/io.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/slab.h> +#include <linux/gameport.h> +#include <linux/module.h> +#include <sound/core.h> +#include <sound/control.h> +#include <sound/pcm.h> +#include <sound/rawmidi.h> +#include <sound/ac97_codec.h> +#include <sound/tlv.h> +#include <sound/opl3.h> +#include <sound/initval.h> + + +MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); +MODULE_DESCRIPTION("Cirrus Logic CS4281"); +MODULE_LICENSE("GPL"); + +static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ +static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ +static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable switches */ +static bool dual_codec[SNDRV_CARDS]; /* dual codec */ + +module_param_array(index, int, NULL, 0444); +MODULE_PARM_DESC(index, "Index value for CS4281 soundcard."); +module_param_array(id, charp, NULL, 0444); +MODULE_PARM_DESC(id, "ID string for CS4281 soundcard."); +module_param_array(enable, bool, NULL, 0444); +MODULE_PARM_DESC(enable, "Enable CS4281 soundcard."); +module_param_array(dual_codec, bool, NULL, 0444); +MODULE_PARM_DESC(dual_codec, "Secondary Codec ID (0 = disabled)."); + +/* + * Direct registers + */ + +#define CS4281_BA0_SIZE 0x1000 +#define CS4281_BA1_SIZE 0x10000 + +/* + * BA0 registers + */ +#define BA0_HISR 0x0000 /* Host Interrupt Status Register */ +#define BA0_HISR_INTENA (1<<31) /* Internal Interrupt Enable Bit */ +#define BA0_HISR_MIDI (1<<22) /* MIDI port interrupt */ +#define BA0_HISR_FIFOI (1<<20) /* FIFO polled interrupt */ +#define BA0_HISR_DMAI (1<<18) /* DMA interrupt (half or end) */ +#define BA0_HISR_FIFO(c) (1<<(12+(c))) /* FIFO channel interrupt */ +#define BA0_HISR_DMA(c) (1<<(8+(c))) /* DMA channel interrupt */ +#define BA0_HISR_GPPI (1<<5) /* General Purpose Input (Primary chip) */ +#define BA0_HISR_GPSI (1<<4) /* General Purpose Input (Secondary chip) */ +#define BA0_HISR_GP3I (1<<3) /* GPIO3 pin Interrupt */ +#define BA0_HISR_GP1I (1<<2) /* GPIO1 pin Interrupt */ +#define BA0_HISR_VUPI (1<<1) /* VOLUP pin Interrupt */ +#define BA0_HISR_VDNI (1<<0) /* VOLDN pin Interrupt */ + +#define BA0_HICR 0x0008 /* Host Interrupt Control Register */ +#define BA0_HICR_CHGM (1<<1) /* INTENA Change Mask */ +#define BA0_HICR_IEV (1<<0) /* INTENA Value */ +#define BA0_HICR_EOI (3<<0) /* End of Interrupt command */ + +#define BA0_HIMR 0x000c /* Host Interrupt Mask Register */ + /* Use same contants as for BA0_HISR */ + +#define BA0_IIER 0x0010 /* ISA Interrupt Enable Register */ + +#define BA0_HDSR0 0x00f0 /* Host DMA Engine 0 Status Register */ +#define BA0_HDSR1 0x00f4 /* Host DMA Engine 1 Status Register */ +#define BA0_HDSR2 0x00f8 /* Host DMA Engine 2 Status Register */ +#define BA0_HDSR3 0x00fc /* Host DMA Engine 3 Status Register */ + +#define BA0_HDSR_CH1P (1<<25) /* Channel 1 Pending */ +#define BA0_HDSR_CH2P (1<<24) /* Channel 2 Pending */ +#define BA0_HDSR_DHTC (1<<17) /* DMA Half Terminal Count */ +#define BA0_HDSR_DTC (1<<16) /* DMA Terminal Count */ +#define BA0_HDSR_DRUN (1<<15) /* DMA Running */ +#define BA0_HDSR_RQ (1<<7) /* Pending Request */ + +#define BA0_DCA0 0x0110 /* Host DMA Engine 0 Current Address */ +#define BA0_DCC0 0x0114 /* Host DMA Engine 0 Current Count */ +#define BA0_DBA0 0x0118 /* Host DMA Engine 0 Base Address */ +#define BA0_DBC0 0x011c /* Host DMA Engine 0 Base Count */ +#define BA0_DCA1 0x0120 /* Host DMA Engine 1 Current Address */ +#define BA0_DCC1 0x0124 /* Host DMA Engine 1 Current Count */ +#define BA0_DBA1 0x0128 /* Host DMA Engine 1 Base Address */ +#define BA0_DBC1 0x012c /* Host DMA Engine 1 Base Count */ +#define BA0_DCA2 0x0130 /* Host DMA Engine 2 Current Address */ +#define BA0_DCC2 0x0134 /* Host DMA Engine 2 Current Count */ +#define BA0_DBA2 0x0138 /* Host DMA Engine 2 Base Address */ +#define BA0_DBC2 0x013c /* Host DMA Engine 2 Base Count */ +#define BA0_DCA3 0x0140 /* Host DMA Engine 3 Current Address */ +#define BA0_DCC3 0x0144 /* Host DMA Engine 3 Current Count */ +#define BA0_DBA3 0x0148 /* Host DMA Engine 3 Base Address */ +#define BA0_DBC3 0x014c /* Host DMA Engine 3 Base Count */ +#define BA0_DMR0 0x0150 /* Host DMA Engine 0 Mode */ +#define BA0_DCR0 0x0154 /* Host DMA Engine 0 Command */ +#define BA0_DMR1 0x0158 /* Host DMA Engine 1 Mode */ +#define BA0_DCR1 0x015c /* Host DMA Engine 1 Command */ +#define BA0_DMR2 0x0160 /* Host DMA Engine 2 Mode */ +#define BA0_DCR2 0x0164 /* Host DMA Engine 2 Command */ +#define BA0_DMR3 0x0168 /* Host DMA Engine 3 Mode */ +#define BA0_DCR3 0x016c /* Host DMA Engine 3 Command */ + +#define BA0_DMR_DMA (1<<29) /* Enable DMA mode */ +#define BA0_DMR_POLL (1<<28) /* Enable poll mode */ +#define BA0_DMR_TBC (1<<25) /* Transfer By Channel */ +#define BA0_DMR_CBC (1<<24) /* Count By Channel (0 = frame resolution) */ +#define BA0_DMR_SWAPC (1<<22) /* Swap Left/Right Channels */ +#define BA0_DMR_SIZE20 (1<<20) /* Sample is 20-bit */ +#define BA0_DMR_USIGN (1<<19) /* Unsigned */ +#define BA0_DMR_BEND (1<<18) /* Big Endian */ +#define BA0_DMR_MONO (1<<17) /* Mono */ +#define BA0_DMR_SIZE8 (1<<16) /* Sample is 8-bit */ +#define BA0_DMR_TYPE_DEMAND (0<<6) +#define BA0_DMR_TYPE_SINGLE (1<<6) +#define BA0_DMR_TYPE_BLOCK (2<<6) +#define BA0_DMR_TYPE_CASCADE (3<<6) /* Not supported */ +#define BA0_DMR_DEC (1<<5) /* Access Increment (0) or Decrement (1) */ +#define BA0_DMR_AUTO (1<<4) /* Auto-Initialize */ +#define BA0_DMR_TR_VERIFY (0<<2) /* Verify Transfer */ +#define BA0_DMR_TR_WRITE (1<<2) /* Write Transfer */ +#define BA0_DMR_TR_READ (2<<2) /* Read Transfer */ + +#define BA0_DCR_HTCIE (1<<17) /* Half Terminal Count Interrupt */ +#define BA0_DCR_TCIE (1<<16) /* Terminal Count Interrupt */ +#define BA0_DCR_MSK (1<<0) /* DMA Mask bit */ + +#define BA0_FCR0 0x0180 /* FIFO Control 0 */ +#define BA0_FCR1 0x0184 /* FIFO Control 1 */ +#define BA0_FCR2 0x0188 /* FIFO Control 2 */ +#define BA0_FCR3 0x018c /* FIFO Control 3 */ + +#define BA0_FCR_FEN (1<<31) /* FIFO Enable bit */ +#define BA0_FCR_DACZ (1<<30) /* DAC Zero */ +#define BA0_FCR_PSH (1<<29) /* Previous Sample Hold */ +#define BA0_FCR_RS(x) (((x)&0x1f)<<24) /* Right Slot Mapping */ +#define BA0_FCR_LS(x) (((x)&0x1f)<<16) /* Left Slot Mapping */ +#define BA0_FCR_SZ(x) (((x)&0x7f)<<8) /* FIFO buffer size (in samples) */ +#define BA0_FCR_OF(x) (((x)&0x7f)<<0) /* FIFO starting offset (in samples) */ + +#define BA0_FPDR0 0x0190 /* FIFO Polled Data 0 */ +#define BA0_FPDR1 0x0194 /* FIFO Polled Data 1 */ +#define BA0_FPDR2 0x0198 /* FIFO Polled Data 2 */ +#define BA0_FPDR3 0x019c /* FIFO Polled Data 3 */ + +#define BA0_FCHS 0x020c /* FIFO Channel Status */ +#define BA0_FCHS_RCO(x) (1<<(7+(((x)&3)<<3))) /* Right Channel Out */ +#define BA0_FCHS_LCO(x) (1<<(6+(((x)&3)<<3))) /* Left Channel Out */ +#define BA0_FCHS_MRP(x) (1<<(5+(((x)&3)<<3))) /* Move Read Pointer */ +#define BA0_FCHS_FE(x) (1<<(4+(((x)&3)<<3))) /* FIFO Empty */ +#define BA0_FCHS_FF(x) (1<<(3+(((x)&3)<<3))) /* FIFO Full */ +#define BA0_FCHS_IOR(x) (1<<(2+(((x)&3)<<3))) /* Internal Overrun Flag */ +#define BA0_FCHS_RCI(x) (1<<(1+(((x)&3)<<3))) /* Right Channel In */ +#define BA0_FCHS_LCI(x) (1<<(0+(((x)&3)<<3))) /* Left Channel In */ + +#define BA0_FSIC0 0x0210 /* FIFO Status and Interrupt Control 0 */ +#define BA0_FSIC1 0x0214 /* FIFO Status and Interrupt Control 1 */ +#define BA0_FSIC2 0x0218 /* FIFO Status and Interrupt Control 2 */ +#define BA0_FSIC3 0x021c /* FIFO Status and Interrupt Control 3 */ + +#define BA0_FSIC_FIC(x) (((x)&0x7f)<<24) /* FIFO Interrupt Count */ +#define BA0_FSIC_FORIE (1<<23) /* FIFO OverRun Interrupt Enable */ +#define BA0_FSIC_FURIE (1<<22) /* FIFO UnderRun Interrupt Enable */ +#define BA0_FSIC_FSCIE (1<<16) /* FIFO Sample Count Interrupt Enable */ +#define BA0_FSIC_FSC(x) (((x)&0x7f)<<8) /* FIFO Sample Count */ +#define BA0_FSIC_FOR (1<<7) /* FIFO OverRun */ +#define BA0_FSIC_FUR (1<<6) /* FIFO UnderRun */ +#define BA0_FSIC_FSCR (1<<0) /* FIFO Sample Count Reached */ + +#define BA0_PMCS 0x0344 /* Power Management Control/Status */ +#define BA0_CWPR 0x03e0 /* Configuration Write Protect */ + +#define BA0_EPPMC 0x03e4 /* Extended PCI Power Management Control */ +#define BA0_EPPMC_FPDN (1<<14) /* Full Power DowN */ + +#define BA0_GPIOR 0x03e8 /* GPIO Pin Interface Register */ + +#define BA0_SPMC 0x03ec /* Serial Port Power Management Control (& ASDIN2 enable) */ +#define BA0_SPMC_GIPPEN (1<<15) /* GP INT Primary PME# Enable */ +#define BA0_SPMC_GISPEN (1<<14) /* GP INT Secondary PME# Enable */ +#define BA0_SPMC_EESPD (1<<9) /* EEPROM Serial Port Disable */ +#define BA0_SPMC_ASDI2E (1<<8) /* ASDIN2 Enable */ +#define BA0_SPMC_ASDO (1<<7) /* Asynchronous ASDOUT Assertion */ +#define BA0_SPMC_WUP2 (1<<3) /* Wakeup for Secondary Input */ +#define BA0_SPMC_WUP1 (1<<2) /* Wakeup for Primary Input */ +#define BA0_SPMC_ASYNC (1<<1) /* Asynchronous ASYNC Assertion */ +#define BA0_SPMC_RSTN (1<<0) /* Reset Not! */ + +#define BA0_CFLR 0x03f0 /* Configuration Load Register (EEPROM or BIOS) */ +#define BA0_CFLR_DEFAULT 0x00000001 /* CFLR must be in AC97 link mode */ +#define BA0_IISR 0x03f4 /* ISA Interrupt Select */ +#define BA0_TMS 0x03f8 /* Test Register */ +#define BA0_SSVID 0x03fc /* Subsystem ID register */ + +#define BA0_CLKCR1 0x0400 /* Clock Control Register 1 */ +#define BA0_CLKCR1_CLKON (1<<25) /* Read Only */ +#define BA0_CLKCR1_DLLRDY (1<<24) /* DLL Ready */ +#define BA0_CLKCR1_DLLOS (1<<6) /* DLL Output Select */ +#define BA0_CLKCR1_SWCE (1<<5) /* Clock Enable */ +#define BA0_CLKCR1_DLLP (1<<4) /* DLL PowerUp */ +#define BA0_CLKCR1_DLLSS (((x)&3)<<3) /* DLL Source Select */ + +#define BA0_FRR 0x0410 /* Feature Reporting Register */ +#define BA0_SLT12O 0x041c /* Slot 12 GPIO Output Register for AC-Link */ + +#define BA0_SERMC 0x0420 /* Serial Port Master Control */ +#define BA0_SERMC_FCRN (1<<27) /* Force Codec Ready Not */ +#define BA0_SERMC_ODSEN2 (1<<25) /* On-Demand Support Enable ASDIN2 */ +#define BA0_SERMC_ODSEN1 (1<<24) /* On-Demand Support Enable ASDIN1 */ +#define BA0_SERMC_SXLB (1<<21) /* ASDIN2 to ASDOUT Loopback */ +#define BA0_SERMC_SLB (1<<20) /* ASDOUT to ASDIN2 Loopback */ +#define BA0_SERMC_LOVF (1<<19) /* Loopback Output Valid Frame bit */ +#define BA0_SERMC_TCID(x) (((x)&3)<<16) /* Target Secondary Codec ID */ +#define BA0_SERMC_PXLB (5<<1) /* Primary Port External Loopback */ +#define BA0_SERMC_PLB (4<<1) /* Primary Port Internal Loopback */ +#define BA0_SERMC_PTC (7<<1) /* Port Timing Configuration */ +#define BA0_SERMC_PTC_AC97 (1<<1) /* AC97 mode */ +#define BA0_SERMC_MSPE (1<<0) /* Master Serial Port Enable */ + +#define BA0_SERC1 0x0428 /* Serial Port Configuration 1 */ +#define BA0_SERC1_SO1F(x) (((x)&7)>>1) /* Primary Output Port Format */ +#define BA0_SERC1_AC97 (1<<1) +#define BA0_SERC1_SO1EN (1<<0) /* Primary Output Port Enable */ + +#define BA0_SERC2 0x042c /* Serial Port Configuration 2 */ +#define BA0_SERC2_SI1F(x) (((x)&7)>>1) /* Primary Input Port Format */ +#define BA0_SERC2_AC97 (1<<1) +#define BA0_SERC2_SI1EN (1<<0) /* Primary Input Port Enable */ + +#define BA0_SLT12M 0x045c /* Slot 12 Monitor Register for Primary AC-Link */ + +#define BA0_ACCTL 0x0460 /* AC'97 Control */ +#define BA0_ACCTL_TC (1<<6) /* Target Codec */ +#define BA0_ACCTL_CRW (1<<4) /* 0=Write, 1=Read Command */ +#define BA0_ACCTL_DCV (1<<3) /* Dynamic Command Valid */ +#define BA0_ACCTL_VFRM (1<<2) /* Valid Frame */ +#define BA0_ACCTL_ESYN (1<<1) /* Enable Sync */ + +#define BA0_ACSTS 0x0464 /* AC'97 Status */ +#define BA0_ACSTS_VSTS (1<<1) /* Valid Status */ +#define BA0_ACSTS_CRDY (1<<0) /* Codec Ready */ + +#define BA0_ACOSV 0x0468 /* AC'97 Output Slot Valid */ +#define BA0_ACOSV_SLV(x) (1<<((x)-3)) + +#define BA0_ACCAD 0x046c /* AC'97 Command Address */ +#define BA0_ACCDA 0x0470 /* AC'97 Command Data */ + +#define BA0_ACISV 0x0474 /* AC'97 Input Slot Valid */ +#define BA0_ACISV_SLV(x) (1<<((x)-3)) + +#define BA0_ACSAD 0x0478 /* AC'97 Status Address */ +#define BA0_ACSDA 0x047c /* AC'97 Status Data */ +#define BA0_JSPT 0x0480 /* Joystick poll/trigger */ +#define BA0_JSCTL 0x0484 /* Joystick control */ +#define BA0_JSC1 0x0488 /* Joystick control */ +#define BA0_JSC2 0x048c /* Joystick control */ +#define BA0_JSIO 0x04a0 + +#define BA0_MIDCR 0x0490 /* MIDI Control */ +#define BA0_MIDCR_MRST (1<<5) /* Reset MIDI Interface */ +#define BA0_MIDCR_MLB (1<<4) /* MIDI Loop Back Enable */ +#define BA0_MIDCR_TIE (1<<3) /* MIDI Transmuit Interrupt Enable */ +#define BA0_MIDCR_RIE (1<<2) /* MIDI Receive Interrupt Enable */ +#define BA0_MIDCR_RXE (1<<1) /* MIDI Receive Enable */ +#define BA0_MIDCR_TXE (1<<0) /* MIDI Transmit Enable */ + +#define BA0_MIDCMD 0x0494 /* MIDI Command (wo) */ + +#define BA0_MIDSR 0x0494 /* MIDI Status (ro) */ +#define BA0_MIDSR_RDA (1<<15) /* Sticky bit (RBE 1->0) */ +#define BA0_MIDSR_TBE (1<<14) /* Sticky bit (TBF 0->1) */ +#define BA0_MIDSR_RBE (1<<7) /* Receive Buffer Empty */ +#define BA0_MIDSR_TBF (1<<6) /* Transmit Buffer Full */ + +#define BA0_MIDWP 0x0498 /* MIDI Write */ +#define BA0_MIDRP 0x049c /* MIDI Read (ro) */ + +#define BA0_AODSD1 0x04a8 /* AC'97 On-Demand Slot Disable for primary link (ro) */ +#define BA0_AODSD1_NDS(x) (1<<((x)-3)) + +#define BA0_AODSD2 0x04ac /* AC'97 On-Demand Slot Disable for secondary link (ro) */ +#define BA0_AODSD2_NDS(x) (1<<((x)-3)) + +#define BA0_CFGI 0x04b0 /* Configure Interface (EEPROM interface) */ +#define BA0_SLT12M2 0x04dc /* Slot 12 Monitor Register 2 for secondary AC-link */ +#define BA0_ACSTS2 0x04e4 /* AC'97 Status Register 2 */ +#define BA0_ACISV2 0x04f4 /* AC'97 Input Slot Valid Register 2 */ +#define BA0_ACSAD2 0x04f8 /* AC'97 Status Address Register 2 */ +#define BA0_ACSDA2 0x04fc /* AC'97 Status Data Register 2 */ +#define BA0_FMSR 0x0730 /* FM Synthesis Status (ro) */ +#define BA0_B0AP 0x0730 /* FM Bank 0 Address Port (wo) */ +#define BA0_FMDP 0x0734 /* FM Data Port */ +#define BA0_B1AP 0x0738 /* FM Bank 1 Address Port */ +#define BA0_B1DP 0x073c /* FM Bank 1 Data Port */ + +#define BA0_SSPM 0x0740 /* Sound System Power Management */ +#define BA0_SSPM_MIXEN (1<<6) /* Playback SRC + FM/Wavetable MIX */ +#define BA0_SSPM_CSRCEN (1<<5) /* Capture Sample Rate Converter Enable */ +#define BA0_SSPM_PSRCEN (1<<4) /* Playback Sample Rate Converter Enable */ +#define BA0_SSPM_JSEN (1<<3) /* Joystick Enable */ +#define BA0_SSPM_ACLEN (1<<2) /* Serial Port Engine and AC-Link Enable */ +#define BA0_SSPM_FMEN (1<<1) /* FM Synthesis Block Enable */ + +#define BA0_DACSR 0x0744 /* DAC Sample Rate - Playback SRC */ +#define BA0_ADCSR 0x0748 /* ADC Sample Rate - Capture SRC */ + +#define BA0_SSCR 0x074c /* Sound System Control Register */ +#define BA0_SSCR_HVS1 (1<<23) /* Hardwave Volume Step (0=1,1=2) */ +#define BA0_SSCR_MVCS (1<<19) /* Master Volume Codec Select */ +#define BA0_SSCR_MVLD (1<<18) /* Master Volume Line Out Disable */ +#define BA0_SSCR_MVAD (1<<17) /* Master Volume Alternate Out Disable */ +#define BA0_SSCR_MVMD (1<<16) /* Master Volume Mono Out Disable */ +#define BA0_SSCR_XLPSRC (1<<8) /* External SRC Loopback Mode */ +#define BA0_SSCR_LPSRC (1<<7) /* SRC Loopback Mode */ +#define BA0_SSCR_CDTX (1<<5) /* CD Transfer Data */ +#define BA0_SSCR_HVC (1<<3) /* Harware Volume Control Enable */ + +#define BA0_FMLVC 0x0754 /* FM Synthesis Left Volume Control */ +#define BA0_FMRVC 0x0758 /* FM Synthesis Right Volume Control */ +#define BA0_SRCSA 0x075c /* SRC Slot Assignments */ +#define BA0_PPLVC 0x0760 /* PCM Playback Left Volume Control */ +#define BA0_PPRVC 0x0764 /* PCM Playback Right Volume Control */ +#define BA0_PASR 0x0768 /* playback sample rate */ +#define BA0_CASR 0x076C /* capture sample rate */ + +/* Source Slot Numbers - Playback */ +#define SRCSLOT_LEFT_PCM_PLAYBACK 0 +#define SRCSLOT_RIGHT_PCM_PLAYBACK 1 +#define SRCSLOT_PHONE_LINE_1_DAC 2 +#define SRCSLOT_CENTER_PCM_PLAYBACK 3 +#define SRCSLOT_LEFT_SURROUND_PCM_PLAYBACK 4 +#define SRCSLOT_RIGHT_SURROUND_PCM_PLAYBACK 5 +#define SRCSLOT_LFE_PCM_PLAYBACK 6 +#define SRCSLOT_PHONE_LINE_2_DAC 7 +#define SRCSLOT_HEADSET_DAC 8 +#define SRCSLOT_LEFT_WT 29 /* invalid for BA0_SRCSA */ +#define SRCSLOT_RIGHT_WT 30 /* invalid for BA0_SRCSA */ + +/* Source Slot Numbers - Capture */ +#define SRCSLOT_LEFT_PCM_RECORD 10 +#define SRCSLOT_RIGHT_PCM_RECORD 11 +#define SRCSLOT_PHONE_LINE_1_ADC 12 +#define SRCSLOT_MIC_ADC 13 +#define SRCSLOT_PHONE_LINE_2_ADC 17 +#define SRCSLOT_HEADSET_ADC 18 +#define SRCSLOT_SECONDARY_LEFT_PCM_RECORD 20 +#define SRCSLOT_SECONDARY_RIGHT_PCM_RECORD 21 +#define SRCSLOT_SECONDARY_PHONE_LINE_1_ADC 22 +#define SRCSLOT_SECONDARY_MIC_ADC 23 +#define SRCSLOT_SECONDARY_PHONE_LINE_2_ADC 27 +#define SRCSLOT_SECONDARY_HEADSET_ADC 28 + +/* Source Slot Numbers - Others */ +#define SRCSLOT_POWER_DOWN 31 + +/* MIDI modes */ +#define CS4281_MODE_OUTPUT (1<<0) +#define CS4281_MODE_INPUT (1<<1) + +/* joystick bits */ +/* Bits for JSPT */ +#define JSPT_CAX 0x00000001 +#define JSPT_CAY 0x00000002 +#define JSPT_CBX 0x00000004 +#define JSPT_CBY 0x00000008 +#define JSPT_BA1 0x00000010 +#define JSPT_BA2 0x00000020 +#define JSPT_BB1 0x00000040 +#define JSPT_BB2 0x00000080 + +/* Bits for JSCTL */ +#define JSCTL_SP_MASK 0x00000003 +#define JSCTL_SP_SLOW 0x00000000 +#define JSCTL_SP_MEDIUM_SLOW 0x00000001 +#define JSCTL_SP_MEDIUM_FAST 0x00000002 +#define JSCTL_SP_FAST 0x00000003 +#define JSCTL_ARE 0x00000004 + +/* Data register pairs masks */ +#define JSC1_Y1V_MASK 0x0000FFFF +#define JSC1_X1V_MASK 0xFFFF0000 +#define JSC1_Y1V_SHIFT 0 +#define JSC1_X1V_SHIFT 16 +#define JSC2_Y2V_MASK 0x0000FFFF +#define JSC2_X2V_MASK 0xFFFF0000 +#define JSC2_Y2V_SHIFT 0 +#define JSC2_X2V_SHIFT 16 + +/* JS GPIO */ +#define JSIO_DAX 0x00000001 +#define JSIO_DAY 0x00000002 +#define JSIO_DBX 0x00000004 +#define JSIO_DBY 0x00000008 +#define JSIO_AXOE 0x00000010 +#define JSIO_AYOE 0x00000020 +#define JSIO_BXOE 0x00000040 +#define JSIO_BYOE 0x00000080 + +/* + * + */ + +struct cs4281_dma { + struct snd_pcm_substream *substream; + unsigned int regDBA; /* offset to DBA register */ + unsigned int regDCA; /* offset to DCA register */ + unsigned int regDBC; /* offset to DBC register */ + unsigned int regDCC; /* offset to DCC register */ + unsigned int regDMR; /* offset to DMR register */ + unsigned int regDCR; /* offset to DCR register */ + unsigned int regHDSR; /* offset to HDSR register */ + unsigned int regFCR; /* offset to FCR register */ + unsigned int regFSIC; /* offset to FSIC register */ + unsigned int valDMR; /* DMA mode */ + unsigned int valDCR; /* DMA command */ + unsigned int valFCR; /* FIFO control */ + unsigned int fifo_offset; /* FIFO offset within BA1 */ + unsigned char left_slot; /* FIFO left slot */ + unsigned char right_slot; /* FIFO right slot */ + int frag; /* period number */ +}; + +#define SUSPEND_REGISTERS 20 + +struct cs4281 { + int irq; + + void __iomem *ba0; /* virtual (accessible) address */ + void __iomem *ba1; /* virtual (accessible) address */ + unsigned long ba0_addr; + unsigned long ba1_addr; + + int dual_codec; + + struct snd_ac97_bus *ac97_bus; + struct snd_ac97 *ac97; + struct snd_ac97 *ac97_secondary; + + struct pci_dev *pci; + struct snd_card *card; + struct snd_pcm *pcm; + struct snd_rawmidi *rmidi; + struct snd_rawmidi_substream *midi_input; + struct snd_rawmidi_substream *midi_output; + + struct cs4281_dma dma[4]; + + unsigned char src_left_play_slot; + unsigned char src_right_play_slot; + unsigned char src_left_rec_slot; + unsigned char src_right_rec_slot; + + unsigned int spurious_dhtc_irq; + unsigned int spurious_dtc_irq; + + spinlock_t reg_lock; + unsigned int midcr; + unsigned int uartm; + + struct gameport *gameport; + +#ifdef CONFIG_PM_SLEEP + u32 suspend_regs[SUSPEND_REGISTERS]; +#endif + +}; + +static irqreturn_t snd_cs4281_interrupt(int irq, void *dev_id); + +static const struct pci_device_id snd_cs4281_ids[] = { + { PCI_VDEVICE(CIRRUS, 0x6005), 0, }, /* CS4281 */ + { 0, } +}; + +MODULE_DEVICE_TABLE(pci, snd_cs4281_ids); + +/* + * constants + */ + +#define CS4281_FIFO_SIZE 32 + +/* + * common I/O routines + */ + +static inline void snd_cs4281_pokeBA0(struct cs4281 *chip, unsigned long offset, + unsigned int val) +{ + writel(val, chip->ba0 + offset); +} + +static inline unsigned int snd_cs4281_peekBA0(struct cs4281 *chip, unsigned long offset) +{ + return readl(chip->ba0 + offset); +} + +static void snd_cs4281_ac97_write(struct snd_ac97 *ac97, + unsigned short reg, unsigned short val) +{ + /* + * 1. Write ACCAD = Command Address Register = 46Ch for AC97 register address + * 2. Write ACCDA = Command Data Register = 470h for data to write to AC97 + * 3. Write ACCTL = Control Register = 460h for initiating the write + * 4. Read ACCTL = 460h, DCV should be reset by now and 460h = 07h + * 5. if DCV not cleared, break and return error + */ + struct cs4281 *chip = ac97->private_data; + int count; + + /* + * Setup the AC97 control registers on the CS461x to send the + * appropriate command to the AC97 to perform the read. + * ACCAD = Command Address Register = 46Ch + * ACCDA = Command Data Register = 470h + * ACCTL = Control Register = 460h + * set DCV - will clear when process completed + * reset CRW - Write command + * set VFRM - valid frame enabled + * set ESYN - ASYNC generation enabled + * set RSTN - ARST# inactive, AC97 codec not reset + */ + snd_cs4281_pokeBA0(chip, BA0_ACCAD, reg); + snd_cs4281_pokeBA0(chip, BA0_ACCDA, val); + snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_DCV | BA0_ACCTL_VFRM | + BA0_ACCTL_ESYN | (ac97->num ? BA0_ACCTL_TC : 0)); + for (count = 0; count < 2000; count++) { + /* + * First, we want to wait for a short time. + */ + udelay(10); + /* + * Now, check to see if the write has completed. + * ACCTL = 460h, DCV should be reset by now and 460h = 07h + */ + if (!(snd_cs4281_peekBA0(chip, BA0_ACCTL) & BA0_ACCTL_DCV)) { + return; + } + } + dev_err(chip->card->dev, + "AC'97 write problem, reg = 0x%x, val = 0x%x\n", reg, val); +} + +static unsigned short snd_cs4281_ac97_read(struct snd_ac97 *ac97, + unsigned short reg) +{ + struct cs4281 *chip = ac97->private_data; + int count; + unsigned short result; + // FIXME: volatile is necessary in the following due to a bug of + // some gcc versions + volatile int ac97_num = ((volatile struct snd_ac97 *)ac97)->num; + + /* + * 1. Write ACCAD = Command Address Register = 46Ch for AC97 register address + * 2. Write ACCDA = Command Data Register = 470h for data to write to AC97 + * 3. Write ACCTL = Control Register = 460h for initiating the write + * 4. Read ACCTL = 460h, DCV should be reset by now and 460h = 17h + * 5. if DCV not cleared, break and return error + * 6. Read ACSTS = Status Register = 464h, check VSTS bit + */ + + snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSDA2 : BA0_ACSDA); + + /* + * Setup the AC97 control registers on the CS461x to send the + * appropriate command to the AC97 to perform the read. + * ACCAD = Command Address Register = 46Ch + * ACCDA = Command Data Register = 470h + * ACCTL = Control Register = 460h + * set DCV - will clear when process completed + * set CRW - Read command + * set VFRM - valid frame enabled + * set ESYN - ASYNC generation enabled + * set RSTN - ARST# inactive, AC97 codec not reset + */ + + snd_cs4281_pokeBA0(chip, BA0_ACCAD, reg); + snd_cs4281_pokeBA0(chip, BA0_ACCDA, 0); + snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_DCV | BA0_ACCTL_CRW | + BA0_ACCTL_VFRM | BA0_ACCTL_ESYN | + (ac97_num ? BA0_ACCTL_TC : 0)); + + + /* + * Wait for the read to occur. + */ + for (count = 0; count < 500; count++) { + /* + * First, we want to wait for a short time. + */ + udelay(10); + /* + * Now, check to see if the read has completed. + * ACCTL = 460h, DCV should be reset by now and 460h = 17h + */ + if (!(snd_cs4281_peekBA0(chip, BA0_ACCTL) & BA0_ACCTL_DCV)) + goto __ok1; + } + + dev_err(chip->card->dev, + "AC'97 read problem (ACCTL_DCV), reg = 0x%x\n", reg); + result = 0xffff; + goto __end; + + __ok1: + /* + * Wait for the valid status bit to go active. + */ + for (count = 0; count < 100; count++) { + /* + * Read the AC97 status register. + * ACSTS = Status Register = 464h + * VSTS - Valid Status + */ + if (snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSTS2 : BA0_ACSTS) & BA0_ACSTS_VSTS) + goto __ok2; + udelay(10); + } + + dev_err(chip->card->dev, + "AC'97 read problem (ACSTS_VSTS), reg = 0x%x\n", reg); + result = 0xffff; + goto __end; + + __ok2: + /* + * Read the data returned from the AC97 register. + * ACSDA = Status Data Register = 474h + */ + result = snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSDA2 : BA0_ACSDA); + + __end: + return result; +} + +/* + * PCM part + */ + +static int snd_cs4281_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct cs4281_dma *dma = substream->runtime->private_data; + struct cs4281 *chip = snd_pcm_substream_chip(substream); + + spin_lock(&chip->reg_lock); + switch (cmd) { + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + dma->valDCR |= BA0_DCR_MSK; + dma->valFCR |= BA0_FCR_FEN; + break; + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + dma->valDCR &= ~BA0_DCR_MSK; + dma->valFCR &= ~BA0_FCR_FEN; + break; + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + snd_cs4281_pokeBA0(chip, dma->regDMR, dma->valDMR & ~BA0_DMR_DMA); + dma->valDMR |= BA0_DMR_DMA; + dma->valDCR &= ~BA0_DCR_MSK; + dma->valFCR |= BA0_FCR_FEN; + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + dma->valDMR &= ~(BA0_DMR_DMA|BA0_DMR_POLL); + dma->valDCR |= BA0_DCR_MSK; + dma->valFCR &= ~BA0_FCR_FEN; + /* Leave wave playback FIFO enabled for FM */ + if (dma->regFCR != BA0_FCR0) + dma->valFCR &= ~BA0_FCR_FEN; + break; + default: + spin_unlock(&chip->reg_lock); + return -EINVAL; + } + snd_cs4281_pokeBA0(chip, dma->regDMR, dma->valDMR); + snd_cs4281_pokeBA0(chip, dma->regFCR, dma->valFCR); + snd_cs4281_pokeBA0(chip, dma->regDCR, dma->valDCR); + spin_unlock(&chip->reg_lock); + return 0; +} + +static unsigned int snd_cs4281_rate(unsigned int rate, unsigned int *real_rate) +{ + unsigned int val; + + if (real_rate) + *real_rate = rate; + /* special "hardcoded" rates */ + switch (rate) { + case 8000: return 5; + case 11025: return 4; + case 16000: return 3; + case 22050: return 2; + case 44100: return 1; + case 48000: return 0; + default: + break; + } + val = 1536000 / rate; + if (real_rate) + *real_rate = 1536000 / val; + return val; +} + +static void snd_cs4281_mode(struct cs4281 *chip, struct cs4281_dma *dma, + struct snd_pcm_runtime *runtime, + int capture, int src) +{ + int rec_mono; + + dma->valDMR = BA0_DMR_TYPE_SINGLE | BA0_DMR_AUTO | + (capture ? BA0_DMR_TR_WRITE : BA0_DMR_TR_READ); + if (runtime->channels == 1) + dma->valDMR |= BA0_DMR_MONO; + if (snd_pcm_format_unsigned(runtime->format) > 0) + dma->valDMR |= BA0_DMR_USIGN; + if (snd_pcm_format_big_endian(runtime->format) > 0) + dma->valDMR |= BA0_DMR_BEND; + switch (snd_pcm_format_width(runtime->format)) { + case 8: dma->valDMR |= BA0_DMR_SIZE8; + if (runtime->channels == 1) + dma->valDMR |= BA0_DMR_SWAPC; + break; + case 32: dma->valDMR |= BA0_DMR_SIZE20; break; + } + dma->frag = 0; /* for workaround */ + dma->valDCR = BA0_DCR_TCIE | BA0_DCR_MSK; + if (runtime->buffer_size != runtime->period_size) + dma->valDCR |= BA0_DCR_HTCIE; + /* Initialize DMA */ + snd_cs4281_pokeBA0(chip, dma->regDBA, runtime->dma_addr); + snd_cs4281_pokeBA0(chip, dma->regDBC, runtime->buffer_size - 1); + rec_mono = (chip->dma[1].valDMR & BA0_DMR_MONO) == BA0_DMR_MONO; + snd_cs4281_pokeBA0(chip, BA0_SRCSA, (chip->src_left_play_slot << 0) | + (chip->src_right_play_slot << 8) | + (chip->src_left_rec_slot << 16) | + ((rec_mono ? 31 : chip->src_right_rec_slot) << 24)); + if (!src) + goto __skip_src; + if (!capture) { + if (dma->left_slot == chip->src_left_play_slot) { + unsigned int val = snd_cs4281_rate(runtime->rate, NULL); + snd_BUG_ON(dma->right_slot != chip->src_right_play_slot); + snd_cs4281_pokeBA0(chip, BA0_DACSR, val); + } + } else { + if (dma->left_slot == chip->src_left_rec_slot) { + unsigned int val = snd_cs4281_rate(runtime->rate, NULL); + snd_BUG_ON(dma->right_slot != chip->src_right_rec_slot); + snd_cs4281_pokeBA0(chip, BA0_ADCSR, val); + } + } + __skip_src: + /* Deactivate wave playback FIFO before changing slot assignments */ + if (dma->regFCR == BA0_FCR0) + snd_cs4281_pokeBA0(chip, dma->regFCR, snd_cs4281_peekBA0(chip, dma->regFCR) & ~BA0_FCR_FEN); + /* Initialize FIFO */ + dma->valFCR = BA0_FCR_LS(dma->left_slot) | + BA0_FCR_RS(capture && (dma->valDMR & BA0_DMR_MONO) ? 31 : dma->right_slot) | + BA0_FCR_SZ(CS4281_FIFO_SIZE) | + BA0_FCR_OF(dma->fifo_offset); + snd_cs4281_pokeBA0(chip, dma->regFCR, dma->valFCR | (capture ? BA0_FCR_PSH : 0)); + /* Activate FIFO again for FM playback */ + if (dma->regFCR == BA0_FCR0) + snd_cs4281_pokeBA0(chip, dma->regFCR, dma->valFCR | BA0_FCR_FEN); + /* Clear FIFO Status and Interrupt Control Register */ + snd_cs4281_pokeBA0(chip, dma->regFSIC, 0); +} + +static int snd_cs4281_playback_prepare(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct cs4281_dma *dma = runtime->private_data; + struct cs4281 *chip = snd_pcm_substream_chip(substream); + + spin_lock_irq(&chip->reg_lock); + snd_cs4281_mode(chip, dma, runtime, 0, 1); + spin_unlock_irq(&chip->reg_lock); + return 0; +} + +static int snd_cs4281_capture_prepare(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct cs4281_dma *dma = runtime->private_data; + struct cs4281 *chip = snd_pcm_substream_chip(substream); + + spin_lock_irq(&chip->reg_lock); + snd_cs4281_mode(chip, dma, runtime, 1, 1); + spin_unlock_irq(&chip->reg_lock); + return 0; +} + +static snd_pcm_uframes_t snd_cs4281_pointer(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct cs4281_dma *dma = runtime->private_data; + struct cs4281 *chip = snd_pcm_substream_chip(substream); + + /* + dev_dbg(chip->card->dev, + "DCC = 0x%x, buffer_size = 0x%x, jiffies = %li\n", + snd_cs4281_peekBA0(chip, dma->regDCC), runtime->buffer_size, + jiffies); + */ + return runtime->buffer_size - + snd_cs4281_peekBA0(chip, dma->regDCC) - 1; +} + +static const struct snd_pcm_hardware snd_cs4281_playback = +{ + .info = SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_PAUSE | + SNDRV_PCM_INFO_RESUME, + .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 | + SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_S16_LE | + SNDRV_PCM_FMTBIT_U16_BE | SNDRV_PCM_FMTBIT_S16_BE | + SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_S32_LE | + SNDRV_PCM_FMTBIT_U32_BE | SNDRV_PCM_FMTBIT_S32_BE, + .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, + .rate_min = 4000, + .rate_max = 48000, + .channels_min = 1, + .channels_max = 2, + .buffer_bytes_max = (512*1024), + .period_bytes_min = 64, + .period_bytes_max = (512*1024), + .periods_min = 1, + .periods_max = 2, + .fifo_size = CS4281_FIFO_SIZE, +}; + +static const struct snd_pcm_hardware snd_cs4281_capture = +{ + .info = SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_PAUSE | + SNDRV_PCM_INFO_RESUME, + .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 | + SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_S16_LE | + SNDRV_PCM_FMTBIT_U16_BE | SNDRV_PCM_FMTBIT_S16_BE | + SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_S32_LE | + SNDRV_PCM_FMTBIT_U32_BE | SNDRV_PCM_FMTBIT_S32_BE, + .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, + .rate_min = 4000, + .rate_max = 48000, + .channels_min = 1, + .channels_max = 2, + .buffer_bytes_max = (512*1024), + .period_bytes_min = 64, + .period_bytes_max = (512*1024), + .periods_min = 1, + .periods_max = 2, + .fifo_size = CS4281_FIFO_SIZE, +}; + +static int snd_cs4281_playback_open(struct snd_pcm_substream *substream) +{ + struct cs4281 *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct cs4281_dma *dma; + + dma = &chip->dma[0]; + dma->substream = substream; + dma->left_slot = 0; + dma->right_slot = 1; + runtime->private_data = dma; + runtime->hw = snd_cs4281_playback; + /* should be detected from the AC'97 layer, but it seems + that although CS4297A rev B reports 18-bit ADC resolution, + samples are 20-bit */ + snd_pcm_hw_constraint_msbits(runtime, 0, 32, 20); + return 0; +} + +static int snd_cs4281_capture_open(struct snd_pcm_substream *substream) +{ + struct cs4281 *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct cs4281_dma *dma; + + dma = &chip->dma[1]; + dma->substream = substream; + dma->left_slot = 10; + dma->right_slot = 11; + runtime->private_data = dma; + runtime->hw = snd_cs4281_capture; + /* should be detected from the AC'97 layer, but it seems + that although CS4297A rev B reports 18-bit ADC resolution, + samples are 20-bit */ + snd_pcm_hw_constraint_msbits(runtime, 0, 32, 20); + return 0; +} + +static int snd_cs4281_playback_close(struct snd_pcm_substream *substream) +{ + struct cs4281_dma *dma = substream->runtime->private_data; + + dma->substream = NULL; + return 0; +} + +static int snd_cs4281_capture_close(struct snd_pcm_substream *substream) +{ + struct cs4281_dma *dma = substream->runtime->private_data; + + dma->substream = NULL; + return 0; +} + +static const struct snd_pcm_ops snd_cs4281_playback_ops = { + .open = snd_cs4281_playback_open, + .close = snd_cs4281_playback_close, + .prepare = snd_cs4281_playback_prepare, + .trigger = snd_cs4281_trigger, + .pointer = snd_cs4281_pointer, +}; + +static const struct snd_pcm_ops snd_cs4281_capture_ops = { + .open = snd_cs4281_capture_open, + .close = snd_cs4281_capture_close, + .prepare = snd_cs4281_capture_prepare, + .trigger = snd_cs4281_trigger, + .pointer = snd_cs4281_pointer, +}; + +static int snd_cs4281_pcm(struct cs4281 *chip, int device) +{ + struct snd_pcm *pcm; + int err; + + err = snd_pcm_new(chip->card, "CS4281", device, 1, 1, &pcm); + if (err < 0) + return err; + + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_cs4281_playback_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cs4281_capture_ops); + + pcm->private_data = chip; + pcm->info_flags = 0; + strcpy(pcm->name, "CS4281"); + chip->pcm = pcm; + + snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &chip->pci->dev, + 64*1024, 512*1024); + + return 0; +} + +/* + * Mixer section + */ + +#define CS_VOL_MASK 0x1f + +static int snd_cs4281_info_volume(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 2; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = CS_VOL_MASK; + return 0; +} + +static int snd_cs4281_get_volume(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct cs4281 *chip = snd_kcontrol_chip(kcontrol); + int regL = (kcontrol->private_value >> 16) & 0xffff; + int regR = kcontrol->private_value & 0xffff; + int volL, volR; + + volL = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regL) & CS_VOL_MASK); + volR = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regR) & CS_VOL_MASK); + + ucontrol->value.integer.value[0] = volL; + ucontrol->value.integer.value[1] = volR; + return 0; +} + +static int snd_cs4281_put_volume(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct cs4281 *chip = snd_kcontrol_chip(kcontrol); + int change = 0; + int regL = (kcontrol->private_value >> 16) & 0xffff; + int regR = kcontrol->private_value & 0xffff; + int volL, volR; + + volL = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regL) & CS_VOL_MASK); + volR = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regR) & CS_VOL_MASK); + + if (ucontrol->value.integer.value[0] != volL) { + volL = CS_VOL_MASK - (ucontrol->value.integer.value[0] & CS_VOL_MASK); + snd_cs4281_pokeBA0(chip, regL, volL); + change = 1; + } + if (ucontrol->value.integer.value[1] != volR) { + volR = CS_VOL_MASK - (ucontrol->value.integer.value[1] & CS_VOL_MASK); + snd_cs4281_pokeBA0(chip, regR, volR); + change = 1; + } + return change; +} + +static const DECLARE_TLV_DB_SCALE(db_scale_dsp, -4650, 150, 0); + +static const struct snd_kcontrol_new snd_cs4281_fm_vol = +{ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Synth Playback Volume", + .info = snd_cs4281_info_volume, + .get = snd_cs4281_get_volume, + .put = snd_cs4281_put_volume, + .private_value = ((BA0_FMLVC << 16) | BA0_FMRVC), + .tlv = { .p = db_scale_dsp }, +}; + +static const struct snd_kcontrol_new snd_cs4281_pcm_vol = +{ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "PCM Stream Playback Volume", + .info = snd_cs4281_info_volume, + .get = snd_cs4281_get_volume, + .put = snd_cs4281_put_volume, + .private_value = ((BA0_PPLVC << 16) | BA0_PPRVC), + .tlv = { .p = db_scale_dsp }, +}; + +static void snd_cs4281_mixer_free_ac97_bus(struct snd_ac97_bus *bus) +{ + struct cs4281 *chip = bus->private_data; + chip->ac97_bus = NULL; +} + +static void snd_cs4281_mixer_free_ac97(struct snd_ac97 *ac97) +{ + struct cs4281 *chip = ac97->private_data; + if (ac97->num) + chip->ac97_secondary = NULL; + else + chip->ac97 = NULL; +} + +static int snd_cs4281_mixer(struct cs4281 *chip) +{ + struct snd_card *card = chip->card; + struct snd_ac97_template ac97; + int err; + static const struct snd_ac97_bus_ops ops = { + .write = snd_cs4281_ac97_write, + .read = snd_cs4281_ac97_read, + }; + + err = snd_ac97_bus(card, 0, &ops, chip, &chip->ac97_bus); + if (err < 0) + return err; + chip->ac97_bus->private_free = snd_cs4281_mixer_free_ac97_bus; + + memset(&ac97, 0, sizeof(ac97)); + ac97.private_data = chip; + ac97.private_free = snd_cs4281_mixer_free_ac97; + err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97); + if (err < 0) + return err; + if (chip->dual_codec) { + ac97.num = 1; + err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97_secondary); + if (err < 0) + return err; + } + err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4281_fm_vol, chip)); + if (err < 0) + return err; + err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4281_pcm_vol, chip)); + if (err < 0) + return err; + return 0; +} + + +/* + * proc interface + */ + +static void snd_cs4281_proc_read(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) +{ + struct cs4281 *chip = entry->private_data; + + snd_iprintf(buffer, "Cirrus Logic CS4281\n\n"); + snd_iprintf(buffer, "Spurious half IRQs : %u\n", chip->spurious_dhtc_irq); + snd_iprintf(buffer, "Spurious end IRQs : %u\n", chip->spurious_dtc_irq); +} + +static ssize_t 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) +{ + struct cs4281 *chip = entry->private_data; + + if (copy_to_user_fromio(buf, chip->ba0 + pos, count)) + return -EFAULT; + return count; +} + +static ssize_t 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) +{ + struct cs4281 *chip = entry->private_data; + + if (copy_to_user_fromio(buf, chip->ba1 + pos, count)) + return -EFAULT; + return count; +} + +static const struct snd_info_entry_ops snd_cs4281_proc_ops_BA0 = { + .read = snd_cs4281_BA0_read, +}; + +static const struct snd_info_entry_ops snd_cs4281_proc_ops_BA1 = { + .read = snd_cs4281_BA1_read, +}; + +static void snd_cs4281_proc_init(struct cs4281 *chip) +{ + struct snd_info_entry *entry; + + snd_card_ro_proc_new(chip->card, "cs4281", chip, snd_cs4281_proc_read); + if (! snd_card_proc_new(chip->card, "cs4281_BA0", &entry)) { + entry->content = SNDRV_INFO_CONTENT_DATA; + entry->private_data = chip; + entry->c.ops = &snd_cs4281_proc_ops_BA0; + entry->size = CS4281_BA0_SIZE; + } + if (! snd_card_proc_new(chip->card, "cs4281_BA1", &entry)) { + entry->content = SNDRV_INFO_CONTENT_DATA; + entry->private_data = chip; + entry->c.ops = &snd_cs4281_proc_ops_BA1; + entry->size = CS4281_BA1_SIZE; + } +} + +/* + * joystick support + */ + +#if IS_REACHABLE(CONFIG_GAMEPORT) + +static void snd_cs4281_gameport_trigger(struct gameport *gameport) +{ + struct cs4281 *chip = gameport_get_port_data(gameport); + + if (snd_BUG_ON(!chip)) + return; + snd_cs4281_pokeBA0(chip, BA0_JSPT, 0xff); +} + +static unsigned char snd_cs4281_gameport_read(struct gameport *gameport) +{ + struct cs4281 *chip = gameport_get_port_data(gameport); + + if (snd_BUG_ON(!chip)) + return 0; + return snd_cs4281_peekBA0(chip, BA0_JSPT); +} + +#ifdef COOKED_MODE +static int snd_cs4281_gameport_cooked_read(struct gameport *gameport, + int *axes, int *buttons) +{ + struct cs4281 *chip = gameport_get_port_data(gameport); + unsigned js1, js2, jst; + + if (snd_BUG_ON(!chip)) + return 0; + + js1 = snd_cs4281_peekBA0(chip, BA0_JSC1); + js2 = snd_cs4281_peekBA0(chip, BA0_JSC2); + jst = snd_cs4281_peekBA0(chip, BA0_JSPT); + + *buttons = (~jst >> 4) & 0x0F; + + axes[0] = ((js1 & JSC1_Y1V_MASK) >> JSC1_Y1V_SHIFT) & 0xFFFF; + axes[1] = ((js1 & JSC1_X1V_MASK) >> JSC1_X1V_SHIFT) & 0xFFFF; + axes[2] = ((js2 & JSC2_Y2V_MASK) >> JSC2_Y2V_SHIFT) & 0xFFFF; + axes[3] = ((js2 & JSC2_X2V_MASK) >> JSC2_X2V_SHIFT) & 0xFFFF; + + for (jst = 0; jst < 4; ++jst) + if (axes[jst] == 0xFFFF) axes[jst] = -1; + return 0; +} +#else +#define snd_cs4281_gameport_cooked_read NULL +#endif + +static int snd_cs4281_gameport_open(struct gameport *gameport, int mode) +{ + switch (mode) { +#ifdef COOKED_MODE + case GAMEPORT_MODE_COOKED: + return 0; +#endif + case GAMEPORT_MODE_RAW: + return 0; + default: + return -1; + } + return 0; +} + +static int snd_cs4281_create_gameport(struct cs4281 *chip) +{ + struct gameport *gp; + + chip->gameport = gp = gameport_allocate_port(); + if (!gp) { + dev_err(chip->card->dev, + "cannot allocate memory for gameport\n"); + return -ENOMEM; + } + + gameport_set_name(gp, "CS4281 Gameport"); + gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci)); + gameport_set_dev_parent(gp, &chip->pci->dev); + gp->open = snd_cs4281_gameport_open; + gp->read = snd_cs4281_gameport_read; + gp->trigger = snd_cs4281_gameport_trigger; + gp->cooked_read = snd_cs4281_gameport_cooked_read; + gameport_set_port_data(gp, chip); + + snd_cs4281_pokeBA0(chip, BA0_JSIO, 0xFF); // ? + snd_cs4281_pokeBA0(chip, BA0_JSCTL, JSCTL_SP_MEDIUM_SLOW); + + gameport_register_port(gp); + + return 0; +} + +static void snd_cs4281_free_gameport(struct cs4281 *chip) +{ + if (chip->gameport) { + gameport_unregister_port(chip->gameport); + chip->gameport = NULL; + } +} +#else +static inline int snd_cs4281_create_gameport(struct cs4281 *chip) { return -ENOSYS; } +static inline void snd_cs4281_free_gameport(struct cs4281 *chip) { } +#endif /* IS_REACHABLE(CONFIG_GAMEPORT) */ + +static void snd_cs4281_free(struct snd_card *card) +{ + struct cs4281 *chip = card->private_data; + + snd_cs4281_free_gameport(chip); + + /* Mask interrupts */ + snd_cs4281_pokeBA0(chip, BA0_HIMR, 0x7fffffff); + /* Stop the DLL Clock logic. */ + snd_cs4281_pokeBA0(chip, BA0_CLKCR1, 0); + /* Sound System Power Management - Turn Everything OFF */ + snd_cs4281_pokeBA0(chip, BA0_SSPM, 0); +} + +static int snd_cs4281_chip_init(struct cs4281 *chip); /* defined below */ + +static int snd_cs4281_create(struct snd_card *card, + struct pci_dev *pci, + int dual_codec) +{ + struct cs4281 *chip = card->private_data; + int err; + + err = pcim_enable_device(pci); + if (err < 0) + return err; + spin_lock_init(&chip->reg_lock); + chip->card = card; + chip->pci = pci; + chip->irq = -1; + pci_set_master(pci); + if (dual_codec < 0 || dual_codec > 3) { + dev_err(card->dev, "invalid dual_codec option %d\n", dual_codec); + dual_codec = 0; + } + chip->dual_codec = dual_codec; + + err = pcim_iomap_regions(pci, 0x03, "CS4281"); /* 2 BARs */ + if (err < 0) + return err; + chip->ba0_addr = pci_resource_start(pci, 0); + chip->ba1_addr = pci_resource_start(pci, 1); + + chip->ba0 = pcim_iomap_table(pci)[0]; + chip->ba1 = pcim_iomap_table(pci)[1]; + + if (devm_request_irq(&pci->dev, pci->irq, snd_cs4281_interrupt, + IRQF_SHARED, KBUILD_MODNAME, chip)) { + dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq); + return -ENOMEM; + } + chip->irq = pci->irq; + card->sync_irq = chip->irq; + card->private_free = snd_cs4281_free; + + err = snd_cs4281_chip_init(chip); + if (err) + return err; + + snd_cs4281_proc_init(chip); + return 0; +} + +static int snd_cs4281_chip_init(struct cs4281 *chip) +{ + unsigned int tmp; + unsigned long end_time; + int retry_count = 2; + + /* Having EPPMC.FPDN=1 prevent proper chip initialisation */ + tmp = snd_cs4281_peekBA0(chip, BA0_EPPMC); + if (tmp & BA0_EPPMC_FPDN) + snd_cs4281_pokeBA0(chip, BA0_EPPMC, tmp & ~BA0_EPPMC_FPDN); + + __retry: + tmp = snd_cs4281_peekBA0(chip, BA0_CFLR); + if (tmp != BA0_CFLR_DEFAULT) { + snd_cs4281_pokeBA0(chip, BA0_CFLR, BA0_CFLR_DEFAULT); + tmp = snd_cs4281_peekBA0(chip, BA0_CFLR); + if (tmp != BA0_CFLR_DEFAULT) { + dev_err(chip->card->dev, + "CFLR setup failed (0x%x)\n", tmp); + return -EIO; + } + } + + /* Set the 'Configuration Write Protect' register + * to 4281h. Allows vendor-defined configuration + * space between 0e4h and 0ffh to be written. */ + snd_cs4281_pokeBA0(chip, BA0_CWPR, 0x4281); + + tmp = snd_cs4281_peekBA0(chip, BA0_SERC1); + if (tmp != (BA0_SERC1_SO1EN | BA0_SERC1_AC97)) { + dev_err(chip->card->dev, + "SERC1 AC'97 check failed (0x%x)\n", tmp); + return -EIO; + } + tmp = snd_cs4281_peekBA0(chip, BA0_SERC2); + if (tmp != (BA0_SERC2_SI1EN | BA0_SERC2_AC97)) { + dev_err(chip->card->dev, + "SERC2 AC'97 check failed (0x%x)\n", tmp); + return -EIO; + } + + /* Sound System Power Management */ + snd_cs4281_pokeBA0(chip, BA0_SSPM, BA0_SSPM_MIXEN | BA0_SSPM_CSRCEN | + BA0_SSPM_PSRCEN | BA0_SSPM_JSEN | + BA0_SSPM_ACLEN | BA0_SSPM_FMEN); + + /* Serial Port Power Management */ + /* Blast the clock control register to zero so that the + * PLL starts out in a known state, and blast the master serial + * port control register to zero so that the serial ports also + * start out in a known state. */ + snd_cs4281_pokeBA0(chip, BA0_CLKCR1, 0); + snd_cs4281_pokeBA0(chip, BA0_SERMC, 0); + + /* Make ESYN go to zero to turn off + * the Sync pulse on the AC97 link. */ + snd_cs4281_pokeBA0(chip, BA0_ACCTL, 0); + udelay(50); + + /* Drive the ARST# pin low for a minimum of 1uS (as defined in the AC97 + * spec) and then drive it high. This is done for non AC97 modes since + * there might be logic external to the CS4281 that uses the ARST# line + * for a reset. */ + snd_cs4281_pokeBA0(chip, BA0_SPMC, 0); + udelay(50); + snd_cs4281_pokeBA0(chip, BA0_SPMC, BA0_SPMC_RSTN); + msleep(50); + + if (chip->dual_codec) + snd_cs4281_pokeBA0(chip, BA0_SPMC, BA0_SPMC_RSTN | BA0_SPMC_ASDI2E); + + /* + * Set the serial port timing configuration. + */ + snd_cs4281_pokeBA0(chip, BA0_SERMC, + (chip->dual_codec ? BA0_SERMC_TCID(chip->dual_codec) : BA0_SERMC_TCID(1)) | + BA0_SERMC_PTC_AC97 | BA0_SERMC_MSPE); + + /* + * Start the DLL Clock logic. + */ + snd_cs4281_pokeBA0(chip, BA0_CLKCR1, BA0_CLKCR1_DLLP); + msleep(50); + snd_cs4281_pokeBA0(chip, BA0_CLKCR1, BA0_CLKCR1_SWCE | BA0_CLKCR1_DLLP); + + /* + * Wait for the DLL ready signal from the clock logic. + */ + end_time = jiffies + HZ; + do { + /* + * Read the AC97 status register to see if we've seen a CODEC + * signal from the AC97 codec. + */ + if (snd_cs4281_peekBA0(chip, BA0_CLKCR1) & BA0_CLKCR1_DLLRDY) + goto __ok0; + schedule_timeout_uninterruptible(1); + } while (time_after_eq(end_time, jiffies)); + + dev_err(chip->card->dev, "DLLRDY not seen\n"); + return -EIO; + + __ok0: + + /* + * The first thing we do here is to enable sync generation. As soon + * as we start receiving bit clock, we'll start producing the SYNC + * signal. + */ + snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_ESYN); + + /* + * Wait for the codec ready signal from the AC97 codec. + */ + end_time = jiffies + HZ; + do { + /* + * Read the AC97 status register to see if we've seen a CODEC + * signal from the AC97 codec. + */ + if (snd_cs4281_peekBA0(chip, BA0_ACSTS) & BA0_ACSTS_CRDY) + goto __ok1; + schedule_timeout_uninterruptible(1); + } while (time_after_eq(end_time, jiffies)); + + dev_err(chip->card->dev, + "never read codec ready from AC'97 (0x%x)\n", + snd_cs4281_peekBA0(chip, BA0_ACSTS)); + return -EIO; + + __ok1: + if (chip->dual_codec) { + end_time = jiffies + HZ; + do { + if (snd_cs4281_peekBA0(chip, BA0_ACSTS2) & BA0_ACSTS_CRDY) + goto __codec2_ok; + schedule_timeout_uninterruptible(1); + } while (time_after_eq(end_time, jiffies)); + dev_info(chip->card->dev, + "secondary codec doesn't respond. disable it...\n"); + chip->dual_codec = 0; + __codec2_ok: ; + } + + /* + * Assert the valid frame signal so that we can start sending commands + * to the AC97 codec. + */ + + snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_VFRM | BA0_ACCTL_ESYN); + + /* + * Wait until we've sampled input slots 3 and 4 as valid, meaning that + * the codec is pumping ADC data across the AC-link. + */ + + end_time = jiffies + HZ; + do { + /* + * Read the input slot valid register and see if input slots 3 + * 4 are valid yet. + */ + if ((snd_cs4281_peekBA0(chip, BA0_ACISV) & (BA0_ACISV_SLV(3) | BA0_ACISV_SLV(4))) == (BA0_ACISV_SLV(3) | BA0_ACISV_SLV(4))) + goto __ok2; + schedule_timeout_uninterruptible(1); + } while (time_after_eq(end_time, jiffies)); + + if (--retry_count > 0) + goto __retry; + dev_err(chip->card->dev, "never read ISV3 and ISV4 from AC'97\n"); + return -EIO; + + __ok2: + + /* + * Now, assert valid frame and the slot 3 and 4 valid bits. This will + * commense the transfer of digital audio data to the AC97 codec. + */ + snd_cs4281_pokeBA0(chip, BA0_ACOSV, BA0_ACOSV_SLV(3) | BA0_ACOSV_SLV(4)); + + /* + * Initialize DMA structures + */ + for (tmp = 0; tmp < 4; tmp++) { + struct cs4281_dma *dma = &chip->dma[tmp]; + dma->regDBA = BA0_DBA0 + (tmp * 0x10); + dma->regDCA = BA0_DCA0 + (tmp * 0x10); + dma->regDBC = BA0_DBC0 + (tmp * 0x10); + dma->regDCC = BA0_DCC0 + (tmp * 0x10); + dma->regDMR = BA0_DMR0 + (tmp * 8); + dma->regDCR = BA0_DCR0 + (tmp * 8); + dma->regHDSR = BA0_HDSR0 + (tmp * 4); + dma->regFCR = BA0_FCR0 + (tmp * 4); + dma->regFSIC = BA0_FSIC0 + (tmp * 4); + dma->fifo_offset = tmp * CS4281_FIFO_SIZE; + snd_cs4281_pokeBA0(chip, dma->regFCR, + BA0_FCR_LS(31) | + BA0_FCR_RS(31) | + BA0_FCR_SZ(CS4281_FIFO_SIZE) | + BA0_FCR_OF(dma->fifo_offset)); + } + + chip->src_left_play_slot = 0; /* AC'97 left PCM playback (3) */ + chip->src_right_play_slot = 1; /* AC'97 right PCM playback (4) */ + chip->src_left_rec_slot = 10; /* AC'97 left PCM record (3) */ + chip->src_right_rec_slot = 11; /* AC'97 right PCM record (4) */ + + /* Activate wave playback FIFO for FM playback */ + chip->dma[0].valFCR = BA0_FCR_FEN | BA0_FCR_LS(0) | + BA0_FCR_RS(1) | + BA0_FCR_SZ(CS4281_FIFO_SIZE) | + BA0_FCR_OF(chip->dma[0].fifo_offset); + snd_cs4281_pokeBA0(chip, chip->dma[0].regFCR, chip->dma[0].valFCR); + snd_cs4281_pokeBA0(chip, BA0_SRCSA, (chip->src_left_play_slot << 0) | + (chip->src_right_play_slot << 8) | + (chip->src_left_rec_slot << 16) | + (chip->src_right_rec_slot << 24)); + + /* Initialize digital volume */ + snd_cs4281_pokeBA0(chip, BA0_PPLVC, 0); + snd_cs4281_pokeBA0(chip, BA0_PPRVC, 0); + + /* Enable IRQs */ + snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_EOI); + /* Unmask interrupts */ + snd_cs4281_pokeBA0(chip, BA0_HIMR, 0x7fffffff & ~( + BA0_HISR_MIDI | + BA0_HISR_DMAI | + BA0_HISR_DMA(0) | + BA0_HISR_DMA(1) | + BA0_HISR_DMA(2) | + BA0_HISR_DMA(3))); + + return 0; +} + +/* + * MIDI section + */ + +static void snd_cs4281_midi_reset(struct cs4281 *chip) +{ + snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr | BA0_MIDCR_MRST); + udelay(100); + snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr); +} + +static int snd_cs4281_midi_input_open(struct snd_rawmidi_substream *substream) +{ + struct cs4281 *chip = substream->rmidi->private_data; + + spin_lock_irq(&chip->reg_lock); + chip->midcr |= BA0_MIDCR_RXE; + chip->midi_input = substream; + if (!(chip->uartm & CS4281_MODE_OUTPUT)) { + snd_cs4281_midi_reset(chip); + } else { + snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr); + } + spin_unlock_irq(&chip->reg_lock); + return 0; +} + +static int snd_cs4281_midi_input_close(struct snd_rawmidi_substream *substream) +{ + struct cs4281 *chip = substream->rmidi->private_data; + + spin_lock_irq(&chip->reg_lock); + chip->midcr &= ~(BA0_MIDCR_RXE | BA0_MIDCR_RIE); + chip->midi_input = NULL; + if (!(chip->uartm & CS4281_MODE_OUTPUT)) { + snd_cs4281_midi_reset(chip); + } else { + snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr); + } + chip->uartm &= ~CS4281_MODE_INPUT; + spin_unlock_irq(&chip->reg_lock); + return 0; +} + +static int snd_cs4281_midi_output_open(struct snd_rawmidi_substream *substream) +{ + struct cs4281 *chip = substream->rmidi->private_data; + + spin_lock_irq(&chip->reg_lock); + chip->uartm |= CS4281_MODE_OUTPUT; + chip->midcr |= BA0_MIDCR_TXE; + chip->midi_output = substream; + if (!(chip->uartm & CS4281_MODE_INPUT)) { + snd_cs4281_midi_reset(chip); + } else { + snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr); + } + spin_unlock_irq(&chip->reg_lock); + return 0; +} + +static int snd_cs4281_midi_output_close(struct snd_rawmidi_substream *substream) +{ + struct cs4281 *chip = substream->rmidi->private_data; + + spin_lock_irq(&chip->reg_lock); + chip->midcr &= ~(BA0_MIDCR_TXE | BA0_MIDCR_TIE); + chip->midi_output = NULL; + if (!(chip->uartm & CS4281_MODE_INPUT)) { + snd_cs4281_midi_reset(chip); + } else { + snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr); + } + chip->uartm &= ~CS4281_MODE_OUTPUT; + spin_unlock_irq(&chip->reg_lock); + return 0; +} + +static void snd_cs4281_midi_input_trigger(struct snd_rawmidi_substream *substream, int up) +{ + unsigned long flags; + struct cs4281 *chip = substream->rmidi->private_data; + + spin_lock_irqsave(&chip->reg_lock, flags); + if (up) { + if ((chip->midcr & BA0_MIDCR_RIE) == 0) { + chip->midcr |= BA0_MIDCR_RIE; + snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr); + } + } else { + if (chip->midcr & BA0_MIDCR_RIE) { + chip->midcr &= ~BA0_MIDCR_RIE; + snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr); + } + } + spin_unlock_irqrestore(&chip->reg_lock, flags); +} + +static void snd_cs4281_midi_output_trigger(struct snd_rawmidi_substream *substream, int up) +{ + unsigned long flags; + struct cs4281 *chip = substream->rmidi->private_data; + unsigned char byte; + + spin_lock_irqsave(&chip->reg_lock, flags); + if (up) { + if ((chip->midcr & BA0_MIDCR_TIE) == 0) { + chip->midcr |= BA0_MIDCR_TIE; + /* fill UART FIFO buffer at first, and turn Tx interrupts only if necessary */ + while ((chip->midcr & BA0_MIDCR_TIE) && + (snd_cs4281_peekBA0(chip, BA0_MIDSR) & BA0_MIDSR_TBF) == 0) { + if (snd_rawmidi_transmit(substream, &byte, 1) != 1) { + chip->midcr &= ~BA0_MIDCR_TIE; + } else { + snd_cs4281_pokeBA0(chip, BA0_MIDWP, byte); + } + } + snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr); + } + } else { + if (chip->midcr & BA0_MIDCR_TIE) { + chip->midcr &= ~BA0_MIDCR_TIE; + snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr); + } + } + spin_unlock_irqrestore(&chip->reg_lock, flags); +} + +static const struct snd_rawmidi_ops snd_cs4281_midi_output = +{ + .open = snd_cs4281_midi_output_open, + .close = snd_cs4281_midi_output_close, + .trigger = snd_cs4281_midi_output_trigger, +}; + +static const struct snd_rawmidi_ops snd_cs4281_midi_input = +{ + .open = snd_cs4281_midi_input_open, + .close = snd_cs4281_midi_input_close, + .trigger = snd_cs4281_midi_input_trigger, +}; + +static int snd_cs4281_midi(struct cs4281 *chip, int device) +{ + struct snd_rawmidi *rmidi; + int err; + + err = snd_rawmidi_new(chip->card, "CS4281", device, 1, 1, &rmidi); + if (err < 0) + return err; + strcpy(rmidi->name, "CS4281"); + snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_cs4281_midi_output); + snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_cs4281_midi_input); + rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT | SNDRV_RAWMIDI_INFO_DUPLEX; + rmidi->private_data = chip; + chip->rmidi = rmidi; + return 0; +} + +/* + * Interrupt handler + */ + +static irqreturn_t snd_cs4281_interrupt(int irq, void *dev_id) +{ + struct cs4281 *chip = dev_id; + unsigned int status, dma, val; + struct cs4281_dma *cdma; + + if (chip == NULL) + return IRQ_NONE; + status = snd_cs4281_peekBA0(chip, BA0_HISR); + if ((status & 0x7fffffff) == 0) { + snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_EOI); + return IRQ_NONE; + } + + if (status & (BA0_HISR_DMA(0)|BA0_HISR_DMA(1)|BA0_HISR_DMA(2)|BA0_HISR_DMA(3))) { + for (dma = 0; dma < 4; dma++) + if (status & BA0_HISR_DMA(dma)) { + cdma = &chip->dma[dma]; + spin_lock(&chip->reg_lock); + /* ack DMA IRQ */ + val = snd_cs4281_peekBA0(chip, cdma->regHDSR); + /* workaround, sometimes CS4281 acknowledges */ + /* end or middle transfer position twice */ + cdma->frag++; + if ((val & BA0_HDSR_DHTC) && !(cdma->frag & 1)) { + cdma->frag--; + chip->spurious_dhtc_irq++; + spin_unlock(&chip->reg_lock); + continue; + } + if ((val & BA0_HDSR_DTC) && (cdma->frag & 1)) { + cdma->frag--; + chip->spurious_dtc_irq++; + spin_unlock(&chip->reg_lock); + continue; + } + spin_unlock(&chip->reg_lock); + snd_pcm_period_elapsed(cdma->substream); + } + } + + if ((status & BA0_HISR_MIDI) && chip->rmidi) { + unsigned char c; + + spin_lock(&chip->reg_lock); + while ((snd_cs4281_peekBA0(chip, BA0_MIDSR) & BA0_MIDSR_RBE) == 0) { + c = snd_cs4281_peekBA0(chip, BA0_MIDRP); + if ((chip->midcr & BA0_MIDCR_RIE) == 0) + continue; + snd_rawmidi_receive(chip->midi_input, &c, 1); + } + while ((snd_cs4281_peekBA0(chip, BA0_MIDSR) & BA0_MIDSR_TBF) == 0) { + if ((chip->midcr & BA0_MIDCR_TIE) == 0) + break; + if (snd_rawmidi_transmit(chip->midi_output, &c, 1) != 1) { + chip->midcr &= ~BA0_MIDCR_TIE; + snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr); + break; + } + snd_cs4281_pokeBA0(chip, BA0_MIDWP, c); + } + spin_unlock(&chip->reg_lock); + } + + /* EOI to the PCI part... reenables interrupts */ + snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_EOI); + + return IRQ_HANDLED; +} + + +/* + * OPL3 command + */ +static void snd_cs4281_opl3_command(struct snd_opl3 *opl3, unsigned short cmd, + unsigned char val) +{ + unsigned long flags; + struct cs4281 *chip = opl3->private_data; + void __iomem *port; + + if (cmd & OPL3_RIGHT) + port = chip->ba0 + BA0_B1AP; /* right port */ + else + port = chip->ba0 + BA0_B0AP; /* left port */ + + spin_lock_irqsave(&opl3->reg_lock, flags); + + writel((unsigned int)cmd, port); + udelay(10); + + writel((unsigned int)val, port + 4); + udelay(30); + + spin_unlock_irqrestore(&opl3->reg_lock, flags); +} + +static int __snd_cs4281_probe(struct pci_dev *pci, + const struct pci_device_id *pci_id) +{ + static int dev; + struct snd_card *card; + struct cs4281 *chip; + struct snd_opl3 *opl3; + int err; + + if (dev >= SNDRV_CARDS) + return -ENODEV; + if (!enable[dev]) { + dev++; + return -ENOENT; + } + + err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE, + sizeof(*chip), &card); + if (err < 0) + return err; + chip = card->private_data; + + err = snd_cs4281_create(card, pci, dual_codec[dev]); + if (err < 0) + return err; + + err = snd_cs4281_mixer(chip); + if (err < 0) + return err; + err = snd_cs4281_pcm(chip, 0); + if (err < 0) + return err; + err = snd_cs4281_midi(chip, 0); + if (err < 0) + return err; + err = snd_opl3_new(card, OPL3_HW_OPL3_CS4281, &opl3); + if (err < 0) + return err; + opl3->private_data = chip; + opl3->command = snd_cs4281_opl3_command; + snd_opl3_init(opl3); + err = snd_opl3_hwdep_new(opl3, 0, 1, NULL); + if (err < 0) + return err; + snd_cs4281_create_gameport(chip); + strcpy(card->driver, "CS4281"); + strcpy(card->shortname, "Cirrus Logic CS4281"); + sprintf(card->longname, "%s at 0x%lx, irq %d", + card->shortname, + chip->ba0_addr, + chip->irq); + + err = snd_card_register(card); + if (err < 0) + return err; + + pci_set_drvdata(pci, card); + dev++; + return 0; +} + +static int snd_cs4281_probe(struct pci_dev *pci, + const struct pci_device_id *pci_id) +{ + return snd_card_free_on_error(&pci->dev, __snd_cs4281_probe(pci, pci_id)); +} + +/* + * Power Management + */ +#ifdef CONFIG_PM_SLEEP + +static const int saved_regs[SUSPEND_REGISTERS] = { + BA0_JSCTL, + BA0_GPIOR, + BA0_SSCR, + BA0_MIDCR, + BA0_SRCSA, + BA0_PASR, + BA0_CASR, + BA0_DACSR, + BA0_ADCSR, + BA0_FMLVC, + BA0_FMRVC, + BA0_PPLVC, + BA0_PPRVC, +}; + +#define CLKCR1_CKRA 0x00010000L + +static int cs4281_suspend(struct device *dev) +{ + struct snd_card *card = dev_get_drvdata(dev); + struct cs4281 *chip = card->private_data; + u32 ulCLK; + unsigned int i; + + snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); + snd_ac97_suspend(chip->ac97); + snd_ac97_suspend(chip->ac97_secondary); + + ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1); + ulCLK |= CLKCR1_CKRA; + snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK); + + /* Disable interrupts. */ + snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_CHGM); + + /* remember the status registers */ + for (i = 0; i < ARRAY_SIZE(saved_regs); i++) + if (saved_regs[i]) + chip->suspend_regs[i] = snd_cs4281_peekBA0(chip, saved_regs[i]); + + /* Turn off the serial ports. */ + snd_cs4281_pokeBA0(chip, BA0_SERMC, 0); + + /* Power off FM, Joystick, AC link, */ + snd_cs4281_pokeBA0(chip, BA0_SSPM, 0); + + /* DLL off. */ + snd_cs4281_pokeBA0(chip, BA0_CLKCR1, 0); + + /* AC link off. */ + snd_cs4281_pokeBA0(chip, BA0_SPMC, 0); + + ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1); + ulCLK &= ~CLKCR1_CKRA; + snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK); + return 0; +} + +static int cs4281_resume(struct device *dev) +{ + struct snd_card *card = dev_get_drvdata(dev); + struct cs4281 *chip = card->private_data; + unsigned int i; + u32 ulCLK; + + ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1); + ulCLK |= CLKCR1_CKRA; + snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK); + + snd_cs4281_chip_init(chip); + + /* restore the status registers */ + for (i = 0; i < ARRAY_SIZE(saved_regs); i++) + if (saved_regs[i]) + snd_cs4281_pokeBA0(chip, saved_regs[i], chip->suspend_regs[i]); + + snd_ac97_resume(chip->ac97); + snd_ac97_resume(chip->ac97_secondary); + + ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1); + ulCLK &= ~CLKCR1_CKRA; + snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK); + + snd_power_change_state(card, SNDRV_CTL_POWER_D0); + return 0; +} + +static SIMPLE_DEV_PM_OPS(cs4281_pm, cs4281_suspend, cs4281_resume); +#define CS4281_PM_OPS &cs4281_pm +#else +#define CS4281_PM_OPS NULL +#endif /* CONFIG_PM_SLEEP */ + +static struct pci_driver cs4281_driver = { + .name = KBUILD_MODNAME, + .id_table = snd_cs4281_ids, + .probe = snd_cs4281_probe, + .driver = { + .pm = CS4281_PM_OPS, + }, +}; + +module_pci_driver(cs4281_driver); |