Commit 320d5528 authored by Seunghwan Kim's avatar Seunghwan Kim Committed by Patrick Georgi
Browse files

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: default avatarSeunghwan Kim <sh_.kim@samsung.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39463

Reviewed-by: default avatarTim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: default avatarbuild bot (Jenkins) <no-reply@coreboot.org>
parent 70517071
config DRIVERS_I2C_MAX98390
bool
default n
depends on HAVE_ACPI_TABLES
ramstage-$(CONFIG_DRIVERS_I2C_MAX98390) += max98390.c
/* 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;
};
/* 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
};
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