d1c0f958d1
Individual drivers check whether the concerned device is enabled before filling in the SSDT. Move the check before calling acpi_fill_ssdt() and remove the check in the individual drivers. BUG=None TEST=util/abuild/abuild Change-Id: Ib042bec7e8c68b38fafa60a8e965d781bddcd1f0 Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/47148 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Christian Walter <christian.walter@9elements.com>
83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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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/device.h>
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#include <device/path.h>
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#include <stdlib.h>
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#include <string.h>
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#include "chip.h"
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static const char *i2c_gpiomux_mux_acpi_name(const struct device *dev)
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{
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static char name[ACPI_NAME_BUFFER_SIZE];
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snprintf(name, ACPI_NAME_BUFFER_SIZE, "MUX%01.1X", dev->path.generic.id);
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return name;
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}
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static void i2c_gpiomux_mux_fill_ssdt(const struct device *dev)
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{
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const char *scope = acpi_device_scope(dev);
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const char *path = acpi_device_path(dev);
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struct drivers_i2c_gpiomux_mux_config *config = config_of(dev);
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struct acpi_dp *dsd = NULL;
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const char *compat_string = "i2c-mux-gpio";
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struct acpi_gpio_res_params param[MAX_NUM_MUX_GPIOS];
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int i;
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if (!scope || !path)
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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", ACPI_DT_NAMESPACE_HID);
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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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for (i = 0; i < config->mux_gpio_count; i++) {
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acpi_device_write_gpio(&config->mux_gpio[i]);
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param[i].ref = path;
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param[i].index = i;
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param[i].pin = 0;
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param[i].active_low = config->mux_gpio[i].active_low;
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}
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acpigen_write_resourcetemplate_footer();
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/* DSD */
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dsd = acpi_dp_new_table("_DSD");
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acpi_dp_add_string(dsd, "compatible", compat_string);
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acpi_dp_add_gpio_array(dsd, "mux-gpios", param, config->mux_gpio_count);
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acpi_dp_write(dsd);
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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 at %s\n", path, dev->chip_ops->name, dev_path(dev));
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}
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static struct device_operations i2c_gpiomux_mux_ops = {
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.read_resources = noop_read_resources,
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.set_resources = noop_set_resources,
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.scan_bus = scan_static_bus,
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.acpi_name = i2c_gpiomux_mux_acpi_name,
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.acpi_fill_ssdt = i2c_gpiomux_mux_fill_ssdt,
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};
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static void i2c_gpiomux_mux_enable(struct device *dev)
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{
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if (!dev)
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return;
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dev->ops = &i2c_gpiomux_mux_ops;
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}
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struct chip_operations drivers_i2c_gpiomux_mux_ops = {
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CHIP_NAME("I2C GPIO MUX Device")
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.enable_dev = i2c_gpiomux_mux_enable
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};
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