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ASoC: cs35l56: Update ACPI HID and property

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Merge series from Richard Fitzgerald <rf@opensource.cirrus.com>:

These two patches add an ACPI HID and update the way the platform-
specific firmware identifier is extracted from the ACPI.
This commit is contained in:
Mark Brown 2023-08-17 18:36:28 +01:00
commit ab0b5072d1
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GPG Key ID: 24D68B725D5487D0
3 changed files with 30 additions and 19 deletions
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9
sound/soc/codecs/cs35l56-i2c.c
View File

@ -62,10 +62,19 @@ static const struct i2c_device_id cs35l56_id_i2c[] = {
};
MODULE_DEVICE_TABLE(i2c, cs35l56_id_i2c);
#ifdef CONFIG_ACPI
static const struct acpi_device_id cs35l56_asoc_acpi_match[] = {
{ "CSC355C", 0 },
{},
};
MODULE_DEVICE_TABLE(acpi, cs35l56_asoc_acpi_match);
#endif
static struct i2c_driver cs35l56_i2c_driver = {
.driver = {
.name = "cs35l56",
.pm = &cs35l56_pm_ops_i2c_spi,
.acpi_match_table = ACPI_PTR(cs35l56_asoc_acpi_match),
},
.id_table = cs35l56_id_i2c,
.probe = cs35l56_i2c_probe,

9
sound/soc/codecs/cs35l56-spi.c
View File

@ -59,10 +59,19 @@ static const struct spi_device_id cs35l56_id_spi[] = {
};
MODULE_DEVICE_TABLE(spi, cs35l56_id_spi);
#ifdef CONFIG_ACPI
static const struct acpi_device_id cs35l56_asoc_acpi_match[] = {
{ "CSC355C", 0 },
{},
};
MODULE_DEVICE_TABLE(acpi, cs35l56_asoc_acpi_match);
#endif
static struct spi_driver cs35l56_spi_driver = {
.driver = {
.name = "cs35l56",
.pm = &cs35l56_pm_ops_i2c_spi,
.acpi_match_table = ACPI_PTR(cs35l56_asoc_acpi_match),
},
.id_table = cs35l56_id_spi,
.probe = cs35l56_spi_probe,

31
sound/soc/codecs/cs35l56.c
View File

@ -5,7 +5,6 @@
// Copyright (C) 2023 Cirrus Logic, Inc. and
// Cirrus Logic International Semiconductor Ltd.
#include <linux/acpi.h>
#include <linux/completion.h>
#include <linux/debugfs.h>
#include <linux/delay.h>
@ -1354,26 +1353,22 @@ static int cs35l56_dsp_init(struct cs35l56_private *cs35l56)
return 0;
}
static int cs35l56_acpi_get_name(struct cs35l56_private *cs35l56)
static int cs35l56_get_firmware_uid(struct cs35l56_private *cs35l56)
{
acpi_handle handle = ACPI_HANDLE(cs35l56->dev);
const char *sub;
struct device *dev = cs35l56->dev;
const char *prop;
int ret;
/* If there is no ACPI_HANDLE, there is no ACPI for this system, return 0 */
if (!handle)
ret = device_property_read_string(dev, "cirrus,firmware-uid", &prop);
/* If bad sw node property, return 0 and fallback to legacy firmware path */
if (ret < 0)
return 0;
sub = acpi_get_subsystem_id(handle);
if (IS_ERR(sub)) {
/* If bad ACPI, return 0 and fallback to legacy firmware path, otherwise fail */
if (PTR_ERR(sub) == -ENODATA)
return 0;
else
return PTR_ERR(sub);
}
cs35l56->dsp.system_name = devm_kstrdup(dev, prop, GFP_KERNEL);
if (cs35l56->dsp.system_name == NULL)
return -ENOMEM;
cs35l56->dsp.system_name = sub;
dev_dbg(cs35l56->dev, "Subsystem ID: %s\n", cs35l56->dsp.system_name);
dev_dbg(dev, "Firmware UID: %s\n", cs35l56->dsp.system_name);
return 0;
}
@ -1417,7 +1412,7 @@ int cs35l56_common_probe(struct cs35l56_private *cs35l56)
gpiod_set_value_cansleep(cs35l56->reset_gpio, 1);
}
ret = cs35l56_acpi_get_name(cs35l56);
ret = cs35l56_get_firmware_uid(cs35l56);
if (ret != 0)
goto err;
@ -1604,8 +1599,6 @@ void cs35l56_remove(struct cs35l56_private *cs35l56)
regcache_cache_only(cs35l56->regmap, true);
kfree(cs35l56->dsp.system_name);
gpiod_set_value_cansleep(cs35l56->reset_gpio, 0);
regulator_bulk_disable(ARRAY_SIZE(cs35l56->supplies), cs35l56->supplies);
}