driver/i2c/max98390: add dsm_param_name
Maxim driver look for "maxim,dsm_param_name" to load dsm parameter file.
dsm param file name consist of {dsm_param_file_name} filled in devicetree,
{MAINBOARD_VENDOR} and {MAINBOARD_PART_NUMBER}.
=> {dsm_param_file_name}_{MAINBOARD_VENDOR}_{MAINBOARD_PART_NUMBER}.bin
BUG=b:197076844
TEST=build, and check ssdt
Change-Id: I006572d6a6ea55298374c688dfd9d877835da82d
Signed-off-by: Wisley Chen <wisley.chen@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57119
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
diff --git a/src/drivers/i2c/max98390/chip.h b/src/drivers/i2c/max98390/chip.h
index 193a174..d01237b 100644
--- a/src/drivers/i2c/max98390/chip.h
+++ b/src/drivers/i2c/max98390/chip.h
@@ -13,4 +13,5 @@
const char *r0_calib_key;
/* The VPD key of temperature during speaker calibration. */
const char *temperature_calib_key;
+ const char *dsm_param_file_name;
};
diff --git a/src/drivers/i2c/max98390/max98390.c b/src/drivers/i2c/max98390/max98390.c
index c216391..4beb6c2 100644
--- a/src/drivers/i2c/max98390/max98390.c
+++ b/src/drivers/i2c/max98390/max98390.c
@@ -25,8 +25,9 @@
.speed = I2C_SPEED_FAST,
.resource = scope,
};
- struct acpi_dp *dp;
+ struct acpi_dp *dp = NULL;
uint64_t r0_value, temp_value;
+ char dsm_name[80] = {};
if (!scope)
return;
@@ -58,11 +59,29 @@
dp = acpi_dp_new_table("_DSD");
MAX98390_DP_INT("r0_calib", r0_value);
MAX98390_DP_INT("temperature_calib", temp_value);
- acpi_dp_write(dp);
printk(BIOS_INFO, "set dsm_calib properties\n");
}
}
+ if (CONFIG(CHROMEOS_DSM_PARAM_FILE_NAME)) {
+ if (config->dsm_param_file_name) {
+ if (!dp)
+ dp = acpi_dp_new_table("_DSD");
+
+ size_t chars = snprintf(dsm_name, sizeof(dsm_name), "%s_%s_%s.bin",
+ config->dsm_param_file_name, CONFIG_MAINBOARD_VENDOR,
+ CONFIG_MAINBOARD_PART_NUMBER);
+
+ if (chars >= sizeof(dsm_name))
+ printk(BIOS_ERR, "ERROR: String too long in %s\n", __func__);
+
+ acpi_dp_add_string(dp, "maxim,dsm_param_name", dsm_name);
+ }
+ }
+
+ if (dp)
+ acpi_dp_write(dp);
+
acpigen_pop_len(); /* Device */
acpigen_pop_len(); /* Scope */
diff --git a/src/vendorcode/google/chromeos/Kconfig b/src/vendorcode/google/chromeos/Kconfig
index e6d45e1..605b09e 100644
--- a/src/vendorcode/google/chromeos/Kconfig
+++ b/src/vendorcode/google/chromeos/Kconfig
@@ -70,6 +70,14 @@
to ACPI DSD table in device driver. These parameters will be applied by kernel driver
through device property at boot.
+config CHROMEOS_DSM_PARAM_FILE_NAME
+ bool
+ default n
+ help
+ On some boards, there are different dsm parameter files for Dynamic Speaker
+ Management (DSM). Enable this config to assign dsm parameters file name in ACPI
+ SSDT table. Kernel driver uses this to load the DSM parameter file.
+
config CHROMEOS_CSE_BOARD_RESET_OVERRIDE
bool
default n