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/*
* drivers/sbus/audio/cs4231.h
*
* Copyright (C) 1996 Thomas K. Dyas (tdyas@noc.rutgers.edu)
* Copyright (C) 1997 Derrick J. Brashear (shadow@dementia.org)
*/
#ifndef _CS4231_H_
#define _CS4231_H_
#include <linux/types.h>
/* According to the CS4231A data provided on CS web site and sun's includes */
struct cs4231_regs {
__volatile__ __u8 iar; /* Index Address Register */
__volatile__ __u8 pad0[3];
__volatile__ __u8 idr; /* Indexed Data Register */
__volatile__ __u8 pad1[3];
__volatile__ __u8 statr; /* Status Register */
__volatile__ __u8 pad2[3];
__volatile__ __u8 piodr; /* PIO Data Register */
__volatile__ __u8 pad3[3];
__volatile__ __u32 dmacsr; /* APC CSR */
__volatile__ __u32 dmapad[3];
__volatile__ __u32 dmacva; /* Capture Virtual Address */
__volatile__ __u32 dmacc; /* Capture Count */
__volatile__ __u32 dmacnva; /* Capture Next Virtual Address */
__volatile__ __u32 dmacnc; /* Capture Next Count */
__volatile__ __u32 dmapva; /* Playback Virtual Address */
__volatile__ __u32 dmapc; /* Playback Count */
__volatile__ __u32 dmapnva; /* Playback Next Virtual Address */
__volatile__ __u32 dmapnc; /* Playback Next Count */
};
/* Our structure for each chip */
struct cs4231_chip {
struct cs4231_regs *regs;
struct audio_info perchip_info;
unsigned int playlen, reclen;
int irq;
unsigned long regs_size;
/* Keep track of various info */
volatile unsigned int status;
/* Current buffer that the driver is playing. */
volatile __u8 * output_ptr;
volatile unsigned long output_size;
volatile __u32 * output_dma_handle, * output_next_dma_handle;
volatile unsigned long output_dma_size, output_next_dma_size;
/* Current record buffer. */
volatile __u8 * input_ptr;
volatile unsigned long input_size;
volatile __u32 * input_dma_handle, * input_next_dma_handle;
volatile unsigned long input_dma_size, input_next_dma_size;
/* Number of buffers in the pipe. */
volatile unsigned long playing_count;
volatile unsigned long recording_count;
};
/* Local status bits */
#define CS_STATUS_NEED_INIT 0x01
#define CS_STATUS_INIT_ON_CLOSE 0x02
#define CS_STATUS_REV_A 0x04
#define CS_STATUS_INTS_ON 0x08
#define CS_STATUS_IS_ULTRA 0x10
#define CS_TIMEOUT 9000000
#define GAIN_SET(var, gain) ((var & ~(0x3f)) | gain)
#define RECGAIN_SET(var, gain) ((var & ~(0x1f)) | gain)
/* bits 0-3 set address of register accessed by idr register */
/* bit 4 allows access to idr registers 16-31 in mode 2 only */
/* bit 5 if set causes dma transfers to cease if the int bit of status set */
#define IAR_AUTOCAL_BEGIN 0x40 /* MCE */
#define IAR_NOT_READY 0x80 /* INIT */
#define IAR_AUTOCAL_END ~(IAR_AUTOCAL_BEGIN) /* MCD */
/* Registers 1-15 modes 1 and 2. Registers 16-31 mode 2 only */
/* Registers assumed to be same in both modes unless noted */
/* 0 - Left Input Control */
/* 1 - Right Input Control */
#define MIC_ENABLE(var) ((var & 0x2f) | 0x80)
#define LINE_ENABLE(var) (var & 0x2f)
#define CDROM_ENABLE(var) ((var & 0x2f) | 0x40)
#define OUTPUTLOOP_ENABLE(var) ((var & 0x2f) | 0xC0)
#define INPUTCR_AUX1 0x40
/* 2 - Left Aux 1 Input Control */
/* 3 - Right Aux 1 Input Control */
/* 4 - Left Aux 2 Input Control */
/* 5 - Right Aux 2 Input Control */
/* 6 - Left Output Control */
/* 7 - Right Output Control */
#define OUTCR_MUTE 0x80
#define OUTCR_UNMUTE ~0x80
/* 8 - Playback Data Format (Mode 2) */
#define CHANGE_DFR(var, val) ((var & ~(0xF)) | val)
#define CHANGE_ENCODING(var, val) ((var & ~(0xe0)) | val)
#define DEFAULT_DATA_FMAT CS4231_DFR_ULAW
#define CS4231_DFR_5512 0x01
#define CS4231_DFR_6615 0x0f
#define CS4231_DFR_8000 0x00
#define CS4231_DFR_9600 0x0e
#define CS4231_DFR_11025 0x03
#define CS4231_DFR_16000 0x02
#define CS4231_DFR_18900 0x05
#define CS4231_DFR_22050 0x07
#define CS4231_DFR_27429 0x04
#define CS4231_DFR_32000 0x06
#define CS4231_DFR_33075 0x0d
#define CS4231_DFR_37800 0x09
#define CS4231_DFR_44100 0x0b
#define CS4231_DFR_48000 0x0c
#define CS4231_DFR_LINEAR8 0x00
#define CS4231_DFR_ULAW 0x20
#define CS4231_DFR_LINEARLE 0x40
#define CS4231_DFR_ALAW 0x60
#define CS4231_DFR_ADPCM 0xa0 /* N/A in mode 1 */
#define CS4231_DFR_LINEARBE 0xc0 /* N/A in mode 1 */
#define CS4231_STEREO_ON(val) (val | 0x10)
#define CS4231_MONO_ON(val) (val & ~0x10)
/* 9 - Interface Config. Register */
#define PEN_ENABLE (0x01) /* Playback Enable */
#define PEN_DISABLE (~0x01)
#define CEN_ENABLE (0x02) /* Capture Enable */
#define CEN_DISABLE (~0x02)
#define SDC_ENABLE (0x04) /* Turn on single DMA Channel mode */
#define ACAL_CONV 0x08 /* Turn on converter autocal */
#define ACAL_DISABLE (~0x08)
#define ACAL_DAC 0x10 /* Turn on DAC autocal */
#define ACAL_FULL (ACAL_DAC|ACAL_CONV) /* Turn on full autocal */
#define PPIO 0x20 /* do playback via PIO rather than DMA */
#define CPIO 0x40 /* do capture via PIO rather than DMA */
#define ICR_AUTOCAL_INIT 0x01
/* 10 - Pin Control Register */
#define INTR_ON 0x82
#define INTR_OFF 0x80
#define PINCR_LINE_MUTE 0x40
#define PINCR_HDPH_MUTE 0x80
/* 11 - Test/Initialization */
#define DRQ_STAT 0x10
#define AUTOCAL_IN_PROGRESS 0x20
/* 12 - Misc Information */
#define MISC_IR_MODE2 0x40
/* 13 - Loopback Control */
#define LOOPB_ON 0x01
#define LOOPB_OFF 0x00
/* 14 - shared play/capture upper (mode 1) */
/* 15 - shared play/capture lower (mode 1) */
/* 14 - Playback Upper (mode 2) */
/* 15 - Playback Lower (mode 2) */
/* The rest are mode 2 only */
/* 16 - Alternate Feature 1 Enable */
#define DAC_ZERO 0x01
#define PLAY_MCE 0x10
#define CAPTURE_MCE 0x20
#define TIMER_ENABLE 0x40
#define OLB_ENABLE 0x80 /* go to 2.88 vpp analog output */
/* 17 - Alternate Feature 2 Enable */
#define HPF_ON 0x01 /* High Pass Filter */
#define XTALE_ON 0x02 /* Enable both crystals */
#define APAR_OFF 0x04 /* ADPCM playback accum reset */
/* 18 - Left Line Input Gain */
/* 19 - Right Line Input Gain */
/* 20 - Timer High */
/* 21 - Timer Low */
/* 22 - unused */
/* 23 - Alt. Fea. Ena 3 */
#define ACF 0x01
/* 24 - Alternate Feature Status */
#define CS_PU 0x01 /* Underrun */
#define CS_PO 0x02 /* Overrun */
#define CS_CU 0x04 /* Underrun */
#define CS_CO 0x08 /* Overrun */
#define CS_PI 0x10
#define CS_CI 0x20
#define CS_TI 0x40
/* 25 - Version */
#define CS4231A 0x20
#define CS4231CDE 0x80
/* 26 - Mono I/O Control */
#define CHANGE_MONO_GAIN(val) ((val & ~(0xFF)) | val)
#define MONO_IOCR_BYPASS 0x20
#define MONO_IOCR_MUTE 0x40
#define MONO_IOCR_INMUTE 0x80
/* 27 - Unused */
/* 28 - Capture Data Format */
/* see register 8 */
/* 29 - Unused */
/* 30 - Capture Upper */
/* 31 - Capture Lower */
/* Following are CSR register definitions for the Sparc */
#define CS_INT_PENDING 0x800000 /* Interrupt Pending */
#define CS_PLAY_INT 0x400000 /* Playback interrupt */
#define CS_CAPT_INT 0x200000 /* Capture interrupt */
#define CS_GENL_INT 0x100000 /* General interrupt */
#define CS_XINT_ENA 0x80000 /* General ext int. enable */
#define CS_XINT_PLAY 0x40000 /* Playback ext intr */
#define CS_XINT_CAPT 0x20000 /* Capture ext intr */
#define CS_XINT_GENL 0x10000 /* Error ext intr */
#define CS_XINT_EMPT 0x8000 /* Pipe empty interrupt */
#define CS_XINT_PEMP 0x4000 /* Play pipe empty */
#define CS_XINT_PNVA 0x2000 /* Playback NVA dirty */
#define CS_XINT_PENA 0x1000 /* play pipe empty Int enable */
#define CS_XINT_COVF 0x800 /* Cap data dropped on floor */
#define CS_XINT_CNVA 0x400 /* Capture NVA dirty */
#define CS_XINT_CEMP 0x200 /* Capture pipe empty interrupt */
#define CS_XINT_CENA 0x100 /* Cap. pipe empty int enable */
#define CS_PPAUSE 0x80 /* Pause the play DMA */
#define CS_CPAUSE 0x40 /* Pause the capture DMA */
#define CS_CDC_RESET 0x20 /* CODEC RESET */
#define PDMA_READY 0x08 /* Play DMA Go */
#define CDMA_READY 0x04 /* Capture DMA Go */
#define CS_CHIP_RESET 0x01 /* Reset the chip */
#define CS_INIT_SETUP (CDMA_READY | PDMA_READY | CS_XINT_ENA | CS_XINT_PLAY | CS_XINT_GENL | CS_INT_PENDING | CS_PLAY_INT | CS_CAPT_INT | CS_GENL_INT)
#define CS_PLAY_SETUP (CS_GENL_INT | CS_PLAY_INT | CS_XINT_ENA | CS_XINT_PLAY | CS_XINT_EMPT | CS_XINT_GENL | CS_XINT_PENA | PDMA_READY)
#define CS_CAPT_SETUP (CS_GENL_INT | CS_CAPT_INT | CS_XINT_ENA | CS_XINT_CAPT | CS_XINT_CEMP | CS_XINT_GENL | CDMA_READY)
#define CS4231_MIN_ATEN (0)
#define CS4231_MAX_ATEN (31)
#define CS4231_MAX_DEV_ATEN (63)
#define CS4231_MON_MIN_ATEN (0)
#define CS4231_MON_MAX_ATEN (63)
#define CS4231_DEFAULT_PLAYGAIN (132)
#define CS4231_DEFAULT_RECGAIN (126)
#define CS4231_MIN_GAIN (0)
#define CS4231_MAX_GAIN (15)
#define CS4231_PRECISION (8) /* # of bits/sample */
#define CS4231_CHANNELS (1) /* channels/sample */
#define CS4231_RATE (8000) /* default sample rate */
#endif
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