driver/i2c/max98390: Add i2c driver for Maxim 98390 codec
Add an SSDT generator for Maxim 98390 kernel driver. Copied from 'drivers/i2c/rt1011'. BUG=b:149443429 BRANCH=None TEST=built coreboot and checked audio function with kernel patch on nightfury Change-Id: I64d776c6c9726eb5822ad4dd82f6826c2a30cb1d Signed-off-by: Seunghwan Kim <sh_.kim@samsung.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/39463 Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
parent
7051707129
commit
320d5528c3
|
@ -0,0 +1,4 @@
|
|||
config DRIVERS_I2C_MAX98390
|
||||
bool
|
||||
default n
|
||||
depends on HAVE_ACPI_TABLES
|
|
@ -0,0 +1 @@
|
|||
ramstage-$(CONFIG_DRIVERS_I2C_MAX98390) += max98390.c
|
|
@ -0,0 +1,17 @@
|
|||
/* This file is part of the coreboot project. */
|
||||
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
||||
|
||||
/*
|
||||
* MAXIM MAX98390 audio codec devicetree bindings
|
||||
*/
|
||||
|
||||
struct drivers_i2c_max98390_config {
|
||||
const char *name; /* ACPI Device Name */
|
||||
const char *desc; /* Device Description */
|
||||
unsigned int uid; /* ACPI _UID */
|
||||
|
||||
/* The VPD key of calibrated speaker resistance. */
|
||||
const char *r0_calib_key;
|
||||
/* The VPD key of temperature during speaker calibration. */
|
||||
const char *temperature_calib_key;
|
||||
};
|
|
@ -0,0 +1,110 @@
|
|||
/* This file is part of the coreboot project. */
|
||||
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
||||
|
||||
#include <arch/acpi.h>
|
||||
#include <arch/acpi_device.h>
|
||||
#include <arch/acpigen.h>
|
||||
#include <console/console.h>
|
||||
#include <device/i2c.h>
|
||||
#include <device/device.h>
|
||||
#include <device/path.h>
|
||||
#include <stdint.h>
|
||||
#include <vendorcode/google/chromeos/chromeos.h>
|
||||
#include "chip.h"
|
||||
|
||||
#define MAX98390_ACPI_HID "MX98390"
|
||||
|
||||
#define MAX98390_DP_INT(key, val) acpi_dp_add_integer(dp, "maxim," key, (val))
|
||||
|
||||
static void max98390_fill_ssdt(struct device *dev)
|
||||
{
|
||||
struct drivers_i2c_max98390_config *config = dev->chip_info;
|
||||
const char *scope = acpi_device_scope(dev);
|
||||
struct acpi_i2c i2c = {
|
||||
.address = dev->path.i2c.device,
|
||||
.mode_10bit = dev->path.i2c.mode_10bit,
|
||||
.speed = I2C_SPEED_FAST,
|
||||
.resource = scope,
|
||||
};
|
||||
struct acpi_dp *dp;
|
||||
uint64_t r0_value, temp_value;
|
||||
|
||||
if (!dev->enabled || !scope)
|
||||
return;
|
||||
|
||||
/* Device */
|
||||
acpigen_write_scope(scope);
|
||||
acpigen_write_device(acpi_device_name(dev));
|
||||
acpigen_write_name_string("_HID", MAX98390_ACPI_HID);
|
||||
acpigen_write_name_integer("_UID", config->uid);
|
||||
acpigen_write_name_string("_DDN", config->desc);
|
||||
acpigen_write_STA(acpi_device_status(dev));
|
||||
|
||||
/* Resources */
|
||||
acpigen_write_name("_CRS");
|
||||
acpigen_write_resourcetemplate_header();
|
||||
acpi_device_write_i2c(&i2c);
|
||||
acpigen_write_resourcetemplate_footer();
|
||||
|
||||
/* Device Properties */
|
||||
if (CONFIG(CHROMEOS_DSM_CALIB)) {
|
||||
if (get_dsm_calibration_from_key(config->r0_calib_key, &r0_value)
|
||||
|| get_dsm_calibration_from_key(config->temperature_calib_key,
|
||||
&temp_value)) {
|
||||
printk(BIOS_ERR,
|
||||
"Failed to get dsm_calib parameters from VPD"
|
||||
" with key %s and %s\n",
|
||||
config->r0_calib_key, config->temperature_calib_key);
|
||||
} else {
|
||||
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");
|
||||
}
|
||||
}
|
||||
|
||||
acpigen_pop_len(); /* Device */
|
||||
acpigen_pop_len(); /* Scope */
|
||||
|
||||
printk(BIOS_INFO, "%s: %s address 0%xh\n", acpi_device_path(dev), dev->chip_ops->name,
|
||||
dev->path.i2c.device);
|
||||
}
|
||||
|
||||
static const char *max98390_acpi_name(const struct device *dev)
|
||||
{
|
||||
struct drivers_i2c_max98390_config *config = dev->chip_info;
|
||||
static char name[5];
|
||||
|
||||
if (config->name)
|
||||
return config->name;
|
||||
|
||||
snprintf(name, sizeof(name), "D%03.3X", dev->path.i2c.device);
|
||||
return name;
|
||||
}
|
||||
|
||||
static struct device_operations max98390_ops = {
|
||||
.read_resources = noop_read_resources,
|
||||
.set_resources = noop_set_resources,
|
||||
.acpi_name = max98390_acpi_name,
|
||||
.acpi_fill_ssdt_generator = max98390_fill_ssdt,
|
||||
};
|
||||
|
||||
static void max98390_enable(struct device *dev)
|
||||
{
|
||||
struct drivers_i2c_max98390_config *config = dev->chip_info;
|
||||
|
||||
if (!config)
|
||||
return;
|
||||
|
||||
dev->ops = &max98390_ops;
|
||||
|
||||
/* Name the device as per description provided in devicetree */
|
||||
if (config->desc)
|
||||
dev->name = config->desc;
|
||||
}
|
||||
|
||||
struct chip_operations drivers_i2c_max98390_ops = {
|
||||
CHIP_NAME("Maxim MAX98390 Codec")
|
||||
.enable_dev = max98390_enable
|
||||
};
|
Loading…
Reference in New Issue