cs421x.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Cirrus Logic CS421x HD-audio codec
 */

#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <sound/core.h>
#include <linux/pci.h>
#include <sound/tlv.h>
#include <sound/hda_codec.h>
#include "hda_local.h"
#include "hda_auto_parser.h"
#include "hda_jack.h"
#include "../generic.h"

struct cs_spec {
	struct hda_gen_spec gen;

	unsigned int gpio_mask;
	unsigned int gpio_dir;
	unsigned int gpio_data;
	unsigned int gpio_eapd_hp; /* EAPD GPIO bit for headphones */
	unsigned int gpio_eapd_speaker; /* EAPD GPIO bit for speakers */

	/* CS421x */
	unsigned int spdif_detect:1;
	unsigned int spdif_present:1;
	unsigned int sense_b:1;
	hda_nid_t vendor_nid;

	/* for MBP SPDIF control */
	int (*spdif_sw_put)(struct snd_kcontrol *kcontrol,
			    struct snd_ctl_elem_value *ucontrol);
};

/* CS421x boards */
enum {
	CS421X_CDB4210,
	CS421X_SENSE_B,
	CS421X_STUMPY,
};

/* Vendor-specific processing widget */
#define CS_DIG_OUT1_PIN_NID	0x10
#define CS_DIG_OUT2_PIN_NID	0x15
#define CS_DMIC1_PIN_NID	0x0e
#define CS_DMIC2_PIN_NID	0x12

/* coef indices */
#define IDX_SPDIF_STAT		0x0000
#define IDX_SPDIF_CTL		0x0001
#define IDX_ADC_CFG		0x0002
/* SZC bitmask, 4 modes below:
 * 0 = immediate,
 * 1 = digital immediate, analog zero-cross
 * 2 = digtail & analog soft-ramp
 * 3 = digital soft-ramp, analog zero-cross
 */
#define   CS_COEF_ADC_SZC_MASK		(3 << 0)
#define   CS_COEF_ADC_MIC_SZC_MODE	(3 << 0) /* SZC setup for mic */
#define   CS_COEF_ADC_LI_SZC_MODE	(3 << 0) /* SZC setup for line-in */
/* PGA mode: 0 = differential, 1 = signle-ended */
#define   CS_COEF_ADC_MIC_PGA_MODE	(1 << 5) /* PGA setup for mic */
#define   CS_COEF_ADC_LI_PGA_MODE	(1 << 6) /* PGA setup for line-in */
#define IDX_DAC_CFG		0x0003
/* SZC bitmask, 4 modes below:
 * 0 = Immediate
 * 1 = zero-cross
 * 2 = soft-ramp
 * 3 = soft-ramp on zero-cross
 */
#define   CS_COEF_DAC_HP_SZC_MODE	(3 << 0) /* nid 0x02 */
#define   CS_COEF_DAC_LO_SZC_MODE	(3 << 2) /* nid 0x03 */
#define   CS_COEF_DAC_SPK_SZC_MODE	(3 << 4) /* nid 0x04 */

#define IDX_BEEP_CFG		0x0004
/* 0x0008 - test reg key */
/* 0x0009 - 0x0014 -> 12 test regs */
/* 0x0015 - visibility reg */

/*
 * Cirrus Logic CS4210
 *
 * 1 DAC => HP(sense) / Speakers,
 * 1 ADC <= LineIn(sense) / MicIn / DMicIn,
 * 1 SPDIF OUT => SPDIF Transmitter(sense)
 */
#define CS4210_DAC_NID		0x02
#define CS4210_ADC_NID		0x03
#define CS4210_VENDOR_NID	0x0B
#define CS421X_DMIC_PIN_NID	0x09 /* Port E */
#define CS421X_SPDIF_PIN_NID	0x0A /* Port H */

#define CS421X_IDX_DEV_CFG	0x01
#define CS421X_IDX_ADC_CFG	0x02
#define CS421X_IDX_DAC_CFG	0x03
#define CS421X_IDX_SPK_CTL	0x04

/* Cirrus Logic CS4213 is like CS4210 but does not have SPDIF input/output */
#define CS4213_VENDOR_NID	0x09


static inline int cs_vendor_coef_get(struct hda_codec *codec, unsigned int idx)
{
	struct cs_spec *spec = codec->spec;

	snd_hda_codec_write(codec, spec->vendor_nid, 0,
			    AC_VERB_SET_COEF_INDEX, idx);
	return snd_hda_codec_read(codec, spec->vendor_nid, 0,
				  AC_VERB_GET_PROC_COEF, 0);
}

static inline void cs_vendor_coef_set(struct hda_codec *codec, unsigned int idx,
				      unsigned int coef)
{
	struct cs_spec *spec = codec->spec;

	snd_hda_codec_write(codec, spec->vendor_nid, 0,
			    AC_VERB_SET_COEF_INDEX, idx);
	snd_hda_codec_write(codec, spec->vendor_nid, 0,
			    AC_VERB_SET_PROC_COEF, coef);
}

/*
 * auto-mute and auto-mic switching
 * CS421x auto-output redirecting
 * HP/SPK/SPDIF
 */

static void cs_automute(struct hda_codec *codec)
{
	struct cs_spec *spec = codec->spec;

	/* mute HPs if spdif jack (SENSE_B) is present */
	spec->gen.master_mute = !!(spec->spdif_present && spec->sense_b);

	snd_hda_gen_update_outputs(codec);

	if (spec->gpio_eapd_hp || spec->gpio_eapd_speaker) {
		if (spec->gen.automute_speaker)
			spec->gpio_data = spec->gen.hp_jack_present ?
				spec->gpio_eapd_hp : spec->gpio_eapd_speaker;
		else
			spec->gpio_data =
				spec->gpio_eapd_hp | spec->gpio_eapd_speaker;
		snd_hda_codec_write(codec, 0x01, 0,
				    AC_VERB_SET_GPIO_DATA, spec->gpio_data);
	}
}

static bool is_active_pin(struct hda_codec *codec, hda_nid_t nid)
{
	unsigned int val;

	val = snd_hda_codec_get_pincfg(codec, nid);
	return (get_defcfg_connect(val) != AC_JACK_PORT_NONE);
}

static struct cs_spec *cs_alloc_spec(struct hda_codec *codec, int vendor_nid)
{
	struct cs_spec *spec;

	spec = kzalloc(sizeof(*spec), GFP_KERNEL);
	if (!spec)
		return NULL;
	codec->spec = spec;
	spec->vendor_nid = vendor_nid;
	codec->power_save_node = 1;
	snd_hda_gen_spec_init(&spec->gen);

	return spec;
}

/*
 * Cirrus Logic CS4210
 *
 * 1 DAC => HP(sense) / Speakers,
 * 1 ADC <= LineIn(sense) / MicIn / DMicIn,
 * 1 SPDIF OUT => SPDIF Transmitter(sense)
 */

/* CS4210 board names */
static const struct hda_model_fixup cs421x_models[] = {
	{ .id = CS421X_CDB4210, .name = "cdb4210" },
	{ .id = CS421X_STUMPY, .name = "stumpy" },
	{}
};

static const struct hda_quirk cs421x_fixup_tbl[] = {
	/* Test Intel board + CDB2410  */
	SND_PCI_QUIRK(0x8086, 0x5001, "DP45SG/CDB4210", CS421X_CDB4210),
	{} /* terminator */
};

/* CS4210 board pinconfigs */
/* Default CS4210 (CDB4210)*/
static const struct hda_pintbl cdb4210_pincfgs[] = {
	{ 0x05, 0x0321401f },
	{ 0x06, 0x90170010 },
	{ 0x07, 0x03813031 },
	{ 0x08, 0xb7a70037 },
	{ 0x09, 0xb7a6003e },
	{ 0x0a, 0x034510f0 },
	{} /* terminator */
};

/* Stumpy ChromeBox */
static const struct hda_pintbl stumpy_pincfgs[] = {
	{ 0x05, 0x022120f0 },
	{ 0x06, 0x901700f0 },
	{ 0x07, 0x02a120f0 },
	{ 0x08, 0x77a70037 },
	{ 0x09, 0x77a6003e },
	{ 0x0a, 0x434510f0 },
	{} /* terminator */
};

/* Setup GPIO/SENSE for each board (if used) */
static void cs421x_fixup_sense_b(struct hda_codec *codec,
				 const struct hda_fixup *fix, int action)
{
	struct cs_spec *spec = codec->spec;

	if (action == HDA_FIXUP_ACT_PRE_PROBE)
		spec->sense_b = 1;
}

static const struct hda_fixup cs421x_fixups[] = {
	[CS421X_CDB4210] = {
		.type = HDA_FIXUP_PINS,
		.v.pins = cdb4210_pincfgs,
		.chained = true,
		.chain_id = CS421X_SENSE_B,
	},
	[CS421X_SENSE_B] = {
		.type = HDA_FIXUP_FUNC,
		.v.func = cs421x_fixup_sense_b,
	},
	[CS421X_STUMPY] = {
		.type = HDA_FIXUP_PINS,
		.v.pins = stumpy_pincfgs,
	},
};

static const struct hda_verb cs421x_coef_init_verbs[] = {
	{0x0B, AC_VERB_SET_PROC_STATE, 1},
	{0x0B, AC_VERB_SET_COEF_INDEX, CS421X_IDX_DEV_CFG},
	/*
	 *  Disable Coefficient Index Auto-Increment(DAI)=1,
	 *  PDREF=0
	 */
	{0x0B, AC_VERB_SET_PROC_COEF, 0x0001 },

	{0x0B, AC_VERB_SET_COEF_INDEX, CS421X_IDX_ADC_CFG},
	/* ADC SZCMode = Digital Soft Ramp */
	{0x0B, AC_VERB_SET_PROC_COEF, 0x0002 },

	{0x0B, AC_VERB_SET_COEF_INDEX, CS421X_IDX_DAC_CFG},
	{0x0B, AC_VERB_SET_PROC_COEF,
	 (0x0002 /* DAC SZCMode = Digital Soft Ramp */
	  | 0x0004 /* Mute DAC on FIFO error */
	  | 0x0008 /* Enable DAC High Pass Filter */
	  )},
	{} /* terminator */
};

/* Errata: CS4210 rev A1 Silicon
 *
 * http://www.cirrus.com/en/pubs/errata/
 *
 * Description:
 * 1. Performance degredation is present in the ADC.
 * 2. Speaker output is not completely muted upon HP detect.
 * 3. Noise is present when clipping occurs on the amplified
 *    speaker outputs.
 *
 * Workaround:
 * The following verb sequence written to the registers during
 * initialization will correct the issues listed above.
 */

static const struct hda_verb cs421x_coef_init_verbs_A1_silicon_fixes[] = {
	{0x0B, AC_VERB_SET_PROC_STATE, 0x01},  /* VPW: processing on */

	{0x0B, AC_VERB_SET_COEF_INDEX, 0x0006},
	{0x0B, AC_VERB_SET_PROC_COEF, 0x9999}, /* Test mode: on */

	{0x0B, AC_VERB_SET_COEF_INDEX, 0x000A},
	{0x0B, AC_VERB_SET_PROC_COEF, 0x14CB}, /* Chop double */

	{0x0B, AC_VERB_SET_COEF_INDEX, 0x0011},
	{0x0B, AC_VERB_SET_PROC_COEF, 0xA2D0}, /* Increase ADC current */

	{0x0B, AC_VERB_SET_COEF_INDEX, 0x001A},
	{0x0B, AC_VERB_SET_PROC_COEF, 0x02A9}, /* Mute speaker */

	{0x0B, AC_VERB_SET_COEF_INDEX, 0x001B},
	{0x0B, AC_VERB_SET_PROC_COEF, 0X1006}, /* Remove noise */

	{} /* terminator */
};

/* Speaker Amp Gain is controlled by the vendor widget's coef 4 */
static const DECLARE_TLV_DB_SCALE(cs421x_speaker_boost_db_scale, 900, 300, 0);

static int cs421x_boost_vol_info(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 3;
	return 0;
}

static int cs421x_boost_vol_get(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);

	ucontrol->value.integer.value[0] =
		cs_vendor_coef_get(codec, CS421X_IDX_SPK_CTL) & 0x0003;
	return 0;
}

static int cs421x_boost_vol_put(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);

	unsigned int vol = ucontrol->value.integer.value[0];
	unsigned int coef =
		cs_vendor_coef_get(codec, CS421X_IDX_SPK_CTL);
	unsigned int original_coef = coef;

	coef &= ~0x0003;
	coef |= (vol & 0x0003);
	if (original_coef != coef) {
		cs_vendor_coef_set(codec, CS421X_IDX_SPK_CTL, coef);
		return 1;
	}

	return 0;
}

static const struct snd_kcontrol_new cs421x_speaker_boost_ctl = {

	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
			SNDRV_CTL_ELEM_ACCESS_TLV_READ),
	.name = "Speaker Boost Playback Volume",
	.info = cs421x_boost_vol_info,
	.get = cs421x_boost_vol_get,
	.put = cs421x_boost_vol_put,
	.tlv = { .p = cs421x_speaker_boost_db_scale },
};

static void cs4210_pinmux_init(struct hda_codec *codec)
{
	struct cs_spec *spec = codec->spec;
	unsigned int def_conf, coef;

	/* GPIO, DMIC_SCL, DMIC_SDA and SENSE_B are multiplexed */
	coef = cs_vendor_coef_get(codec, CS421X_IDX_DEV_CFG);

	if (spec->gpio_mask)
		coef |= 0x0008; /* B1,B2 are GPIOs */
	else
		coef &= ~0x0008;

	if (spec->sense_b)
		coef |= 0x0010; /* B2 is SENSE_B, not inverted  */
	else
		coef &= ~0x0010;

	cs_vendor_coef_set(codec, CS421X_IDX_DEV_CFG, coef);

	if ((spec->gpio_mask || spec->sense_b) &&
	    is_active_pin(codec, CS421X_DMIC_PIN_NID)) {

		/*
		 *  GPIO or SENSE_B forced - disconnect the DMIC pin.
		 */
		def_conf = snd_hda_codec_get_pincfg(codec, CS421X_DMIC_PIN_NID);
		def_conf &= ~AC_DEFCFG_PORT_CONN;
		def_conf |= (AC_JACK_PORT_NONE << AC_DEFCFG_PORT_CONN_SHIFT);
		snd_hda_codec_set_pincfg(codec, CS421X_DMIC_PIN_NID, def_conf);
	}
}

static void cs4210_spdif_automute(struct hda_codec *codec,
				  struct hda_jack_callback *tbl)
{
	struct cs_spec *spec = codec->spec;
	bool spdif_present = false;
	hda_nid_t spdif_pin = spec->gen.autocfg.dig_out_pins[0];

	/* detect on spdif is specific to CS4210 */
	if (!spec->spdif_detect ||
	    spec->vendor_nid != CS4210_VENDOR_NID)
		return;

	spdif_present = snd_hda_jack_detect(codec, spdif_pin);
	if (spdif_present == spec->spdif_present)
		return;

	spec->spdif_present = spdif_present;
	/* SPDIF TX on/off */
	snd_hda_set_pin_ctl(codec, spdif_pin, spdif_present ? PIN_OUT : 0);

	cs_automute(codec);
}

static void parse_cs421x_digital(struct hda_codec *codec)
{
	struct cs_spec *spec = codec->spec;
	struct auto_pin_cfg *cfg = &spec->gen.autocfg;
	int i;

	for (i = 0; i < cfg->dig_outs; i++) {
		hda_nid_t nid = cfg->dig_out_pins[i];

		if (get_wcaps(codec, nid) & AC_WCAP_UNSOL_CAP) {
			spec->spdif_detect = 1;
			snd_hda_jack_detect_enable_callback(codec, nid,
							    cs4210_spdif_automute);
		}
	}
}

static int cs421x_init(struct hda_codec *codec)
{
	struct cs_spec *spec = codec->spec;

	if (spec->vendor_nid == CS4210_VENDOR_NID) {
		snd_hda_sequence_write(codec, cs421x_coef_init_verbs);
		snd_hda_sequence_write(codec, cs421x_coef_init_verbs_A1_silicon_fixes);
		cs4210_pinmux_init(codec);
	}

	snd_hda_gen_init(codec);

	if (spec->gpio_mask) {
		snd_hda_codec_write(codec, 0x01, 0, AC_VERB_SET_GPIO_MASK,
				    spec->gpio_mask);
		snd_hda_codec_write(codec, 0x01, 0, AC_VERB_SET_GPIO_DIRECTION,
				    spec->gpio_dir);
		snd_hda_codec_write(codec, 0x01, 0, AC_VERB_SET_GPIO_DATA,
				    spec->gpio_data);
	}

	cs4210_spdif_automute(codec, NULL);

	return 0;
}

static void fix_volume_caps(struct hda_codec *codec, hda_nid_t dac)
{
	unsigned int caps;

	/* set the upper-limit for mixer amp to 0dB */
	caps = query_amp_caps(codec, dac, HDA_OUTPUT);
	caps &= ~(0x7f << AC_AMPCAP_NUM_STEPS_SHIFT);
	caps |= ((caps >> AC_AMPCAP_OFFSET_SHIFT) & 0x7f)
		<< AC_AMPCAP_NUM_STEPS_SHIFT;
	snd_hda_override_amp_caps(codec, dac, HDA_OUTPUT, caps);
}

static int cs421x_parse_auto_config(struct hda_codec *codec)
{
	struct cs_spec *spec = codec->spec;
	hda_nid_t dac = CS4210_DAC_NID;
	int err;

	fix_volume_caps(codec, dac);

	err = snd_hda_parse_pin_defcfg(codec, &spec->gen.autocfg, NULL, 0);
	if (err < 0)
		return err;

	err = snd_hda_gen_parse_auto_config(codec, &spec->gen.autocfg);
	if (err < 0)
		return err;

	parse_cs421x_digital(codec);

	if (spec->gen.autocfg.speaker_outs &&
	    spec->vendor_nid == CS4210_VENDOR_NID) {
		if (!snd_hda_gen_add_kctl(&spec->gen, NULL,
					  &cs421x_speaker_boost_ctl))
			return -ENOMEM;
	}

	return 0;
}

/*
 *	Manage PDREF, when transitioning to D3hot
 *	(DAC,ADC) -> D3, PDREF=1, AFG->D3
 */
static int cs421x_suspend(struct hda_codec *codec)
{
	struct cs_spec *spec = codec->spec;
	unsigned int coef;

	snd_hda_shutup_pins(codec);

	snd_hda_codec_write(codec, CS4210_DAC_NID, 0,
			    AC_VERB_SET_POWER_STATE,  AC_PWRST_D3);
	snd_hda_codec_write(codec, CS4210_ADC_NID, 0,
			    AC_VERB_SET_POWER_STATE,  AC_PWRST_D3);

	if (spec->vendor_nid == CS4210_VENDOR_NID) {
		coef = cs_vendor_coef_get(codec, CS421X_IDX_DEV_CFG);
		coef |= 0x0004; /* PDREF */
		cs_vendor_coef_set(codec, CS421X_IDX_DEV_CFG, coef);
	}

	return 0;
}

static int cs421x_probe(struct hda_codec *codec, const struct hda_device_id *id)
{
	struct cs_spec *spec;
	int err;

	spec = cs_alloc_spec(codec, id->driver_data);
	if (!spec)
		return -ENOMEM;

	spec->gen.automute_hook = cs_automute;

	if (spec->vendor_nid == CS4210_VENDOR_NID) {
		snd_hda_pick_fixup(codec, cs421x_models, cs421x_fixup_tbl,
				   cs421x_fixups);
		snd_hda_apply_fixup(codec, HDA_FIXUP_ACT_PRE_PROBE);

		/*
		 *  Update the GPIO/DMIC/SENSE_B pinmux before the configuration
		 *   is auto-parsed. If GPIO or SENSE_B is forced, DMIC input
		 *   is disabled.
		 */
		cs4210_pinmux_init(codec);
	}

	err = cs421x_parse_auto_config(codec);
	if (err < 0)
		goto error;

	snd_hda_apply_fixup(codec, HDA_FIXUP_ACT_PROBE);

	return 0;

 error:
	snd_hda_gen_remove(codec);
	return err;
}

static const struct hda_codec_ops cs421x_codec_ops = {
	.probe = cs421x_probe,
	.remove = snd_hda_gen_remove,
	.build_controls = snd_hda_gen_build_controls,
	.build_pcms = snd_hda_gen_build_pcms,
	.init = cs421x_init,
	.unsol_event = snd_hda_jack_unsol_event,
	.suspend = cs421x_suspend,
	.stream_pm = snd_hda_gen_stream_pm,
};

/*
 * driver entries
 */
static const struct hda_device_id snd_hda_id_cs421x[] = {
	HDA_CODEC_ID_MODEL(0x10134210, "CS4210", CS4210_VENDOR_NID),
	HDA_CODEC_ID_MODEL(0x10134213, "CS4213", CS4213_VENDOR_NID),
	{} /* terminator */
};
MODULE_DEVICE_TABLE(hdaudio, snd_hda_id_cs421x);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Cirrus Logic CS421x HD-audio codec");

static struct hda_codec_driver cs421x_driver = {
	.id = snd_hda_id_cs421x,
	.ops = &cs421x_codec_ops,
};

module_hda_codec_driver(cs421x_driver);