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ALSA: hda: cs35l41: Support systems with missing _DSD properties 

Some systems using CS35L41 with HDA were released without some
required _DSD properties in ACPI. To support these special cases,
add an api to configure the correct properties for systems with
this issue.

This initial commit moves the no _DSD support for Lenovo
Legion Laptops (CLSA0100, CLSA0101) into a new framework which
can be extended to support additional laptops in the future.

Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230815161033.3519-1-sbinding@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Stefan Binding 2023-08-15 17:10:33 +01:00 committed by Takashi Iwai
parent ff7a0b4016
commit ef4ba63f12
5 changed files with 108 additions and 51 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sound/pci/hda/Makefile
View File

@ -28,7 +28,7 @@ snd-hda-codec-via-objs := patch_via.o
snd-hda-codec-hdmi-objs := patch_hdmi.o hda_eld.o
# side codecs
snd-hda-scodec-cs35l41-objs := cs35l41_hda.o
snd-hda-scodec-cs35l41-objs := cs35l41_hda.o cs35l41_hda_property.o
snd-hda-scodec-cs35l41-i2c-objs := cs35l41_hda_i2c.o
snd-hda-scodec-cs35l41-spi-objs := cs35l41_hda_spi.o
snd-hda-scodec-cs35l56-objs := cs35l56_hda.o

65
sound/pci/hda/cs35l41_hda.c
View File

@ -19,6 +19,7 @@
#include "hda_component.h"
#include "cs35l41_hda.h"
#include "hda_cs_dsp_ctl.h"
#include "cs35l41_hda_property.h"
#define CS35L41_FIRMWARE_ROOT "cirrus/"
#define CS35L41_PART "cs35l41"
@ -1315,8 +1316,7 @@ static int cs35l41_hda_apply_properties(struct cs35l41_hda *cs35l41)
return cs35l41_hda_channel_map(cs35l41->dev, 0, NULL, 1, &hw_cfg->spk_pos);
}
static int cs35l41_get_speaker_id(struct device *dev, int amp_index,
int num_amps, int fixed_gpio_id)
int cs35l41_get_speaker_id(struct device *dev, int amp_index, int num_amps, int fixed_gpio_id)
{
struct gpio_desc *speaker_id_desc;
int speaker_id = -ENODEV;
@ -1370,49 +1370,6 @@ static int cs35l41_get_speaker_id(struct device *dev, int amp_index,
return speaker_id;
}
/*
* Device CLSA010(0/1) doesn't have _DSD so a gpiod_get by the label reset won't work.
* And devices created by serial-multi-instantiate don't have their device struct
* pointing to the correct fwnode, so acpi_dev must be used here.
* And devm functions expect that the device requesting the resource has the correct
* fwnode.
*/
static int cs35l41_no_acpi_dsd(struct cs35l41_hda *cs35l41, struct device *physdev, int id,
const char *hid)
{
struct cs35l41_hw_cfg *hw_cfg = &cs35l41->hw_cfg;
/* check I2C address to assign the index */
cs35l41->index = id == 0x40 ? 0 : 1;
cs35l41->channel_index = 0;
cs35l41->reset_gpio = gpiod_get_index(physdev, NULL, 0, GPIOD_OUT_HIGH);
cs35l41->speaker_id = cs35l41_get_speaker_id(physdev, 0, 0, 2);
hw_cfg->spk_pos = cs35l41->index;
hw_cfg->gpio2.func = CS35L41_INTERRUPT;
hw_cfg->gpio2.valid = true;
hw_cfg->valid = true;
if (strncmp(hid, "CLSA0100", 8) == 0) {
hw_cfg->bst_type = CS35L41_EXT_BOOST_NO_VSPK_SWITCH;
} else if (strncmp(hid, "CLSA0101", 8) == 0) {
hw_cfg->bst_type = CS35L41_EXT_BOOST;
hw_cfg->gpio1.func = CS35l41_VSPK_SWITCH;
hw_cfg->gpio1.valid = true;
} else {
/*
* Note: CLSA010(0/1) are special cases which use a slightly different design.
* All other HIDs e.g. CSC3551 require valid ACPI _DSD properties to be supported.
*/
dev_err(cs35l41->dev, "Error: ACPI _DSD Properties are missing for HID %s.\n", hid);
hw_cfg->valid = false;
hw_cfg->gpio1.valid = false;
hw_cfg->gpio2.valid = false;
return -EINVAL;
}
return 0;
}
static int cs35l41_hda_read_acpi(struct cs35l41_hda *cs35l41, const char *hid, int id)
{
struct cs35l41_hw_cfg *hw_cfg = &cs35l41->hw_cfg;
@ -1438,12 +1395,17 @@ static int cs35l41_hda_read_acpi(struct cs35l41_hda *cs35l41, const char *hid, i
sub = NULL;
cs35l41->acpi_subsystem_id = sub;
ret = cs35l41_add_dsd_properties(cs35l41, physdev, id, hid);
if (!ret) {
dev_info(cs35l41->dev, "Using extra _DSD properties, bypassing _DSD in ACPI\n");
goto put_physdev;
}
property = "cirrus,dev-index";
ret = device_property_count_u32(physdev, property);
if (ret <= 0) {
ret = cs35l41_no_acpi_dsd(cs35l41, physdev, id, hid);
goto err_put_physdev;
}
if (ret <= 0)
goto err;
if (ret > ARRAY_SIZE(values)) {
ret = -EINVAL;
goto err;
@ -1533,7 +1495,10 @@ static int cs35l41_hda_read_acpi(struct cs35l41_hda *cs35l41, const char *hid, i
err:
dev_err(cs35l41->dev, "Failed property %s: %d\n", property, ret);
err_put_physdev:
hw_cfg->valid = false;
hw_cfg->gpio1.valid = false;
hw_cfg->gpio2.valid = false;
put_physdev:
put_device(physdev);
return ret;

1
sound/pci/hda/cs35l41_hda.h
View File

@ -83,5 +83,6 @@ extern const struct dev_pm_ops cs35l41_hda_pm_ops;
int cs35l41_hda_probe(struct device *dev, const char *device_name, int id, int irq,
struct regmap *regmap);
void cs35l41_hda_remove(struct device *dev);
int cs35l41_get_speaker_id(struct device *dev, int amp_index, int num_amps, int fixed_gpio_id);
#endif /*__CS35L41_HDA_H__*/

73
sound/pci/hda/cs35l41_hda_property.c Normal file
View File

@ -0,0 +1,73 @@
// SPDX-License-Identifier: GPL-2.0
//
// CS35L41 ALSA HDA Property driver
//
// Copyright 2023 Cirrus Logic, Inc.
//
// Author: Stefan Binding <sbinding@opensource.cirrus.com>
#include <linux/gpio/consumer.h>
#include <linux/string.h>
#include "cs35l41_hda_property.h"
/*
* Device CLSA010(0/1) doesn't have _DSD so a gpiod_get by the label reset won't work.
* And devices created by serial-multi-instantiate don't have their device struct
* pointing to the correct fwnode, so acpi_dev must be used here.
* And devm functions expect that the device requesting the resource has the correct
* fwnode.
*/
static int lenovo_legion_no_acpi(struct cs35l41_hda *cs35l41, struct device *physdev, int id,
const char *hid)
{
struct cs35l41_hw_cfg *hw_cfg = &cs35l41->hw_cfg;
/* check I2C address to assign the index */
cs35l41->index = id == 0x40 ? 0 : 1;
cs35l41->channel_index = 0;
cs35l41->reset_gpio = gpiod_get_index(physdev, NULL, 0, GPIOD_OUT_HIGH);
cs35l41->speaker_id = cs35l41_get_speaker_id(physdev, 0, 0, 2);
hw_cfg->spk_pos = cs35l41->index;
hw_cfg->gpio2.func = CS35L41_INTERRUPT;
hw_cfg->gpio2.valid = true;
hw_cfg->valid = true;
if (strcmp(hid, "CLSA0100") == 0) {
hw_cfg->bst_type = CS35L41_EXT_BOOST_NO_VSPK_SWITCH;
} else if (strcmp(hid, "CLSA0101") == 0) {
hw_cfg->bst_type = CS35L41_EXT_BOOST;
hw_cfg->gpio1.func = CS35l41_VSPK_SWITCH;
hw_cfg->gpio1.valid = true;
}
return 0;
}
struct cs35l41_prop_model {
const char *hid;
const char *ssid;
int (*add_prop)(struct cs35l41_hda *cs35l41, struct device *physdev, int id,
const char *hid);
};
const struct cs35l41_prop_model cs35l41_prop_model_table[] = {
{ "CLSA0100", NULL, lenovo_legion_no_acpi },
{ "CLSA0101", NULL, lenovo_legion_no_acpi },
{}
};
int cs35l41_add_dsd_properties(struct cs35l41_hda *cs35l41, struct device *physdev, int id,
const char *hid)
{
const struct cs35l41_prop_model *model;
for (model = cs35l41_prop_model_table; model->hid > 0; model++) {
if (!strcmp(model->hid, hid) &&
(!model->ssid ||
(cs35l41->acpi_subsystem_id &&
!strcmp(model->ssid, cs35l41->acpi_subsystem_id))))
return model->add_prop(cs35l41, physdev, id, hid);
}
return -ENOENT;
}

18
sound/pci/hda/cs35l41_hda_property.h Normal file
View File

@ -0,0 +1,18 @@
/* SPDX-License-Identifier: GPL-2.0
*
* CS35L41 ALSA HDA Property driver
*
* Copyright 2023 Cirrus Logic, Inc.
*
* Author: Stefan Binding <sbinding@opensource.cirrus.com>
*/
#ifndef CS35L41_HDA_PROP_H
#define CS35L41_HDA_PROP_H
#include <linux/device.h>
#include "cs35l41_hda.h"
int cs35l41_add_dsd_properties(struct cs35l41_hda *cs35l41, struct device *physdev, int id,
const char *hid);
#endif /* CS35L41_HDA_PROP_H */