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mfd: cs42l43: Add support for new cs42l44 variant

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The cs42l44 is a cost optimised variant of cs42l43b. Add basic support
for this new device.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20260901151417.2546618-1-ckeepax@opensource.cirrus.com
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Charles Keepax 2026-09-01 16:14:17 +01:00 committed by Lee Jones
parent 7c2c57ec8c
commit fdb122928a
4 changed files with 16 additions and 6 deletions
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2
drivers/mfd/cs42l43-i2c.c
View File

@ -58,6 +58,7 @@ static int cs42l43_i2c_probe(struct i2c_client *i2c)
static const struct of_device_id cs42l43_of_match[] = {
{ .compatible = "cirrus,cs42l43", .data = (void *)CS42L43_DEVID_VAL },
{ .compatible = "cirrus,cs42l43b", .data = (void *)CS42L43B_DEVID_VAL },
{ .compatible = "cirrus,cs42l44", .data = (void *)CS42L43B_DEVID_VAL },
{}
};
MODULE_DEVICE_TABLE(of, cs42l43_of_match);
@ -67,6 +68,7 @@ MODULE_DEVICE_TABLE(of, cs42l43_of_match);
static const struct acpi_device_id cs42l43_acpi_match[] = {
{ "CSC4243", CS42L43_DEVID_VAL },
{ "CSC2A3B", CS42L43B_DEVID_VAL },
{ "CSC4244", CS42L43B_DEVID_VAL },
{}
};
MODULE_DEVICE_TABLE(acpi, cs42l43_acpi_match);

1
drivers/mfd/cs42l43-sdw.c
View File

@ -183,6 +183,7 @@ static int cs42l43_sdw_probe(struct sdw_slave *sdw, const struct sdw_device_id *
static const struct sdw_device_id cs42l43_sdw_id[] = {
SDW_SLAVE_ENTRY(0x01FA, 0x4243, (void *)CS42L43_DEVID_VAL),
SDW_SLAVE_ENTRY(0x01FA, 0x2A3B, (void *)CS42L43B_DEVID_VAL),
SDW_SLAVE_ENTRY(0x01FA, 0x4244, (void *)CS42L43B_DEVID_VAL),
{ }
};
MODULE_DEVICE_TABLE(sdw, cs42l43_sdw_id);

18
drivers/mfd/cs42l43.c
View File

@ -959,6 +959,7 @@ static void cs42l43_boot_work(struct work_struct *work)
{
struct cs42l43 *cs42l43 = container_of(work, struct cs42l43, boot_work);
unsigned int devid, revid, otp;
bool valid_id;
int ret;
ret = cs42l43_wait_for_attach(cs42l43);
@ -973,19 +974,24 @@ static void cs42l43_boot_work(struct work_struct *work)
switch (devid) {
case CS42L43_DEVID_VAL:
valid_id = (cs42l43->variant_id == CS42L43_DEVID_VAL);
break;
case CS42L43B_DEVID_VAL:
if (devid != cs42l43->variant_id) {
dev_err(cs42l43->dev,
"Device ID (0x%06x) does not match variant ID (0x%06lx)\n",
devid, cs42l43->variant_id);
goto err;
}
case CS42L44_DEVID_VAL:
valid_id = (cs42l43->variant_id == CS42L43B_DEVID_VAL);
break;
default:
dev_err(cs42l43->dev, "Unrecognised devid: 0x%06x\n", devid);
goto err;
}
if (!valid_id) {
dev_err(cs42l43->dev,
"Device ID (0x%06x) does not match variant ID (0x%06lx)\n",
devid, cs42l43->variant_id);
goto err;
}
ret = regmap_read(cs42l43->regmap, CS42L43_REVID, &revid);
if (ret) {
dev_err(cs42l43->dev, "Failed to read rev: %d\n", ret);

1
include/linux/mfd/cs42l43-regs.h
View File

@ -1183,6 +1183,7 @@
/* CS42L43B VARIANT REGISTERS */
#define CS42L43B_DEVID_VAL 0x0042A43B
#define CS42L44_DEVID_VAL 0x00042A44
#define CS42L43B_DECIM_VOL_CTRL_CH1_CH2 0x00008280
#define CS42L43B_DECIM_VOL_CTRL_CH3_CH4 0x00008284