76cedd2c29
This change moves all ACPI table support in coreboot currently living under arch/x86 into common code to make it architecture independent. ACPI table generation is not really tied to any architecture and hence it makes sense to move this to its own directory. In order to make it easier to review, this change is being split into multiple CLs. This is change 3/5 which basically is generated by running the following command: $ git grep -iIl "arch/acpi" | xargs sed -i 's/arch\/acpi/acpi\/acpi/g' BUG=b:155428745 Change-Id: I16b1c45d954d6440fb9db1d3710063a47b582eae Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40938 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
95 lines
2.4 KiB
C
95 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/* This file is part of the coreboot project. */
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#include <acpi/acpi.h>
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#include <acpi/acpi_device.h>
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#include <acpi/acpigen.h>
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#include <console/console.h>
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#include <device/i2c_simple.h>
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#include <device/device.h>
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#include <device/path.h>
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#include <stdint.h>
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#include "chip.h"
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#define MAX98927_ACPI_NAME "MAXI"
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#define MAX98927_ACPI_HID "MX98927"
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static void max98927_fill_ssdt(const struct device *dev)
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{
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struct drivers_i2c_max98927_config *config = dev->chip_info;
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const char *scope = acpi_device_scope(dev);
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struct acpi_i2c i2c = {
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.address = dev->path.i2c.device,
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.mode_10bit = dev->path.i2c.mode_10bit,
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.speed = config->bus_speed ? : I2C_SPEED_FAST,
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.resource = scope,
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};
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struct acpi_dp *dp;
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if (!dev->enabled || !scope)
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return;
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/* Device */
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acpigen_write_scope(scope);
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acpigen_write_device(acpi_device_name(dev));
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acpigen_write_name_string("_HID", MAX98927_ACPI_HID);
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acpigen_write_name_integer("_UID", config->uid);
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if (config->desc)
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acpigen_write_name_string("_DDN", config->desc);
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acpigen_write_STA(acpi_device_status(dev));
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/* Resources */
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acpigen_write_name("_CRS");
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acpigen_write_resourcetemplate_header();
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acpi_device_write_i2c(&i2c);
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acpigen_write_resourcetemplate_footer();
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/* Device Properties */
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dp = acpi_dp_new_table("_DSD");
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acpi_dp_add_integer(dp, "interleave_mode", config->interleave_mode);
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acpi_dp_add_integer(dp, "vmon-slot-no", config->vmon_slot_no);
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acpi_dp_add_integer(dp, "imon-slot-no", config->imon_slot_no);
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acpi_dp_write(dp);
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acpigen_pop_len(); /* Device */
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acpigen_pop_len(); /* Scope */
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printk(BIOS_INFO, "%s: %s address 0%xh\n", acpi_device_path(dev),
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dev->chip_ops->name, dev->path.i2c.device);
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}
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static const char *max98927_acpi_name(const struct device *dev)
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{
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struct drivers_i2c_max98927_config *config = dev->chip_info;
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if (config->name)
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return config->name;
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return MAX98927_ACPI_NAME;
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}
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static struct device_operations max98927_ops = {
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.read_resources = noop_read_resources,
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.set_resources = noop_set_resources,
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.acpi_name = max98927_acpi_name,
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.acpi_fill_ssdt = max98927_fill_ssdt,
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};
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static void max98927_enable(struct device *dev)
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{
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struct drivers_i2c_max98927_config *config = dev->chip_info;
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dev->ops = &max98927_ops;
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if (config && config->desc) {
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dev->name = config->desc;
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}
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}
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struct chip_operations drivers_i2c_max98927_ops = {
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CHIP_NAME("Maxim MAX98927 Codec")
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.enable_dev = max98927_enable
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};
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