linux/sound/pci/oxygen/xonar_dg.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * card driver for the Xonar DG/DGX
 *
 * Copyright (c) Clemens Ladisch <[email protected]>
 * Copyright (c) Roman Volkov <[email protected]>
 */

/*
 * Xonar DG/DGX
 * ------------
 *
 * CS4245 and CS4361 both will mute all outputs if any clock ratio
 * is invalid.
 *
 * CMI8788:
 *
 *   SPI 0 -> CS4245
 *
 *   Playback:
 *   I²S 1 -> CS4245
 *   I²S 2 -> CS4361 (center/LFE)
 *   I²S 3 -> CS4361 (surround)
 *   I²S 4 -> CS4361 (front)
 *   Capture:
 *   I²S ADC 1 <- CS4245
 *
 *   GPIO 3 <- ?
 *   GPIO 4 <- headphone detect
 *   GPIO 5 -> enable ADC analog circuit for the left channel
 *   GPIO 6 -> enable ADC analog circuit for the right channel
 *   GPIO 7 -> switch green rear output jack between CS4245 and the first
 *             channel of CS4361 (mechanical relay)
 *   GPIO 8 -> enable output to speakers
 *
 * CS4245:
 *
 *   input 0 <- mic
 *   input 1 <- aux
 *   input 2 <- front mic
 *   input 4 <- line
 *   DAC out -> headphones
 *   aux out -> front panel headphones
 */

#include <linux/pci.h>
#include <linux/delay.h>
#include <sound/control.h>
#include <sound/core.h>
#include <sound/info.h>
#include <sound/pcm.h>
#include <sound/tlv.h>
#include "oxygen.h"
#include "xonar_dg.h"
#include "cs4245.h"

int cs4245_write_spi(struct oxygen *chip, u8 reg)
{ … }

int cs4245_read_spi(struct oxygen *chip, u8 addr)
{ … }

int cs4245_shadow_control(struct oxygen *chip, enum cs4245_shadow_operation op)
{ … }

static void cs4245_init(struct oxygen *chip)
{ … }

void dg_init(struct oxygen *chip)
{ … }

void dg_cleanup(struct oxygen *chip)
{ … }

void dg_suspend(struct oxygen *chip)
{ … }

void dg_resume(struct oxygen *chip)
{ … }

void set_cs4245_dac_params(struct oxygen *chip,
				  struct snd_pcm_hw_params *params)
{ … }

void set_cs4245_adc_params(struct oxygen *chip,
				  struct snd_pcm_hw_params *params)
{ … }

static inline unsigned int shift_bits(unsigned int value,
				      unsigned int shift_from,
				      unsigned int shift_to,
				      unsigned int mask)
{ … }

unsigned int adjust_dg_dac_routing(struct oxygen *chip,
					  unsigned int play_routing)
{ … }

void dump_cs4245_registers(struct oxygen *chip,
				  struct snd_info_buffer *buffer)
{ … }