Commit 4ff2ae3a authored by Stefan Binding's avatar Stefan Binding Committed by Takashi Iwai
Browse files

ALSA: hda/cs8409: Follow correct CS42L42 power down sequence for suspend 



Signed-off-by: default avatarStefan Binding <sbinding@opensource.cirrus.com>
Signed-off-by: default avatarVitaly Rodionov <vitalyr@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210811185654.6837-27-vitalyr@opensource.cirrus.com


Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent c8b4f086

sound/pci/hda/patch_cs8409.c

+22 −1
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 
#include <linux/module.h>

#include <sound/core.h>

#include <linux/mutex.h>

#include <linux/iopoll.h>



#include "patch_cs8409.h"
@@ -219,6 +220,7 @@ static int cs8409_i2c_read(struct sub_codec *scodec, unsigned int addr) 
	read_data = cs8409_vendor_coef_get(codec, CS8409_I2C_QREAD);



	mutex_unlock(&spec->i2c_mux);



	return read_data & 0x0ff;



error:
@@ -675,9 +677,28 @@ static void cs42l42_suspend(struct sub_codec *cs42l42) 
{

	struct hda_codec *codec = cs42l42->codec;

	unsigned int gpio_data;

	int reg_cdc_status = 0;

	const struct cs8409_i2c_param cs42l42_pwr_down_seq[] = {

		{ 0x2301, 0x3F },

		{ 0x2302, 0x3F },

		{ 0x2303, 0x3F },

		{ 0x2001, 0x0F },

		{ 0x2A01, 0x00 },

		{ 0x1207, 0x00 },

		{ 0x1101, 0xFE },

		{ 0x1102, 0x8C },

		{ 0x1101, 0xFF },

	};



	cs8409_i2c_bulk_write(cs42l42, cs42l42_pwr_down_seq, ARRAY_SIZE(cs42l42_pwr_down_seq));



	if (read_poll_timeout(cs8409_i2c_read, reg_cdc_status,

			(reg_cdc_status & 0x1), CS42L42_PDN_SLEEP_US, CS42L42_PDN_TIMEOUT_US,

			true, cs42l42, 0x1308) < 0)

		codec_warn(codec, "Timeout waiting for PDN_DONE for CS42L42\n");



	/* Power down CS42L42 ASP/EQ/MIX/HP */

	cs8409_i2c_write(cs42l42, 0x1101, 0xfe);

	cs8409_i2c_write(cs42l42, 0x1102, 0x9C);

	cs42l42->suspended = 1;

	cs42l42->last_page = 0;

sound/pci/hda/patch_cs8409.h

+2 −0
Original line number Diff line number Diff line
@@ -233,6 +233,8 @@ enum cs8409_coefficient_index_registers { 
#define CS42L42_JACK_REMOVED			(0x00)

#define CS42L42_I2C_TIMEOUT_US			(20000)

#define CS42L42_I2C_SLEEP_US			(2000)

#define CS42L42_PDN_TIMEOUT_US			(250000)

#define CS42L42_PDN_SLEEP_US			(2000)



/* Dell BULLSEYE / WARLOCK / CYBORG Specific Definitions */