path: root/sound/pci/ice1712/phase.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *   ALSA driver for ICEnsemble ICE1724 (Envy24)
 *
 *   Lowlevel functions for Terratec PHASE 22
 *
 *	Copyright (c) 2005 Misha Zhilin <misha@epiphan.com>
 */

/* PHASE 22 overview:
 *   Audio controller: VIA Envy24HT-S (slightly trimmed down Envy24HT, 4in/4out)
 *   Analog chip: AK4524 (partially via Philip's 74HCT125)
 *   Digital receiver: CS8414-CS (supported in this release)
 *		PHASE 22 revision 2.0 and Terrasoniq/Musonik TS22PCI have CS8416
 *		(support status unknown, please test and report)
 *
 *   Envy connects to AK4524
 *	- CS directly from GPIO 10
 *	- CCLK via 74HCT125's gate #4 from GPIO 4
 *	- CDTI via 74HCT125's gate #2 from GPIO 5
 *		CDTI may be completely blocked by 74HCT125's gate #1
 *		controlled by GPIO 3
 */

/* PHASE 28 overview:
 *   Audio controller: VIA Envy24HT (full untrimmed version, 4in/8out)
 *   Analog chip: WM8770 (8 channel 192k DAC, 2 channel 96k ADC)
 *   Digital receiver: CS8414-CS (supported in this release)
 */

#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/mutex.h>

#include <sound/core.h>

#include "ice1712.h"
#include "envy24ht.h"
#include "phase.h"
#include <sound/tlv.h>

/* AC97 register cache for Phase28 */
struct phase28_spec {
	unsigned short master[2];
	unsigned short vol[8];
};

/* WM8770 registers */
#define WM_DAC_ATTEN		0x00	/* DAC1-8 analog attenuation */
#define WM_DAC_MASTER_ATTEN	0x08	/* DAC master analog attenuation */
#define WM_DAC_DIG_ATTEN	0x09	/* DAC1-8 digital attenuation */
#define WM_DAC_DIG_MASTER_ATTEN	0x11	/* DAC master digital attenuation */
#define WM_PHASE_SWAP		0x12	/* DAC phase */
#define WM_DAC_CTRL1		0x13	/* DAC control bits */
#define WM_MUTE			0x14	/* mute controls */
#define WM_DAC_CTRL2		0x15	/* de-emphasis and zefo-flag */
#define WM_INT_CTRL		0x16	/* interface control */
#define WM_MASTER		0x17	/* master clock and mode */
#define WM_POWERDOWN		0x18	/* power-down controls */
#define WM_ADC_GAIN		0x19	/* ADC gain L(19)/R(1a) */
#define WM_ADC_MUX		0x1b	/* input MUX */
#define WM_OUT_MUX1		0x1c	/* output MUX */
#define WM_OUT_MUX2		0x1e	/* output MUX */
#define WM_RESET		0x1f	/* software reset */


/*
 * Logarithmic volume values for WM8770
 * Computed as 20 * Log10(255 / x)
 */
static const unsigned char wm_vol[256] = {
	127, 48, 42, 39, 36, 34, 33, 31, 30, 29, 28, 27, 27, 26, 25, 25, 24,
	24, 23, 23, 22, 22, 21, 21, 21, 20, 20, 20, 19, 19, 19, 18, 18, 18, 18,
	17, 17, 17, 17, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14,
	14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11,
	11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9,
	9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7,
	7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5,
	5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
	4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
	3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};

#define WM_VOL_MAX	(sizeof(wm_vol) - 1)
#define WM_VOL_MUTE	0x8000

static const struct snd_akm4xxx akm_phase22 = {
	.type = SND_AK4524,
	.num_dacs = 2,
	.num_adcs = 2,
};

static const struct snd_ak4xxx_private akm_phase22_priv = {
	.caddr =	2,
	.cif =		1,
	.data_mask =	1 << 4,
	.clk_mask =	1 << 5,
	.cs_mask =	1 << 10,
	.cs_addr =	1 << 10,
	.cs_none =	0,
	.add_flags = 	1 << 3,
	.mask_flags =	0,
};

static int phase22_init(struct snd_ice1712 *ice)
{
	struct snd_akm4xxx *ak;
	int err;

	/* Configure DAC/ADC description for generic part of ice1724 */
	switch (ice->eeprom.subvendor) {
	case VT1724_SUBDEVICE_PHASE22:
	case VT1724_SUBDEVICE_TS22:
		ice->num_total_dacs = 2;
		ice->num_total_adcs = 2;
		ice->vt1720 = 1; /* Envy24HT-S have 16 bit wide GPIO */
		break;
	default:
		snd_BUG();
		return -EINVAL;
	}

	/* Initialize analog chips */
	ice->akm = kzalloc(sizeof(struct snd_akm4xxx), GFP_KERNEL);
	ak = ice->akm;
	if (!ak)
		return -ENOMEM;
	ice->akm_codecs = 1;
	switch (ice->eeprom.subvendor) {
	case VT1724_SUBDEVICE_PHASE22:
	case VT1724_SUBDEVICE_TS22:
		err = snd_ice1712_akm4xxx_init(ak, &