src/soc/intel/common/block/scs/sd.c

/*
 * This file is part of the coreboot project.
 *
 * Copyright 2017 Google Inc.
 * Copyright (C) 2018 Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <arch/acpigen.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <intelblocks/sd.h>

#if CONFIG(HAVE_ACPI_TABLES)
static void sd_fill_ssdt(struct device *dev)
{
	const char *path;
	struct acpi_gpio default_gpio = { 0 };
	struct acpi_dp *dp;

	if (!dev->enabled)
		return;

	if (sd_fill_soc_gpio_info(&default_gpio, dev) != 0)
		return;

	/* Use device path as the Scope for the SSDT */
	path = acpi_device_path(dev);
	if (!path)
		return;
	acpigen_write_scope(path);
	acpigen_write_name("_CRS");

	/* Write GpioInt() as default (if set) or custom from devicetree */
	acpigen_write_resourcetemplate_header();
	acpi_device_write_gpio(&default_gpio);
	acpigen_write_resourcetemplate_footer();

	/* Bind the cd-gpio name to the GpioInt() resource */
	dp = acpi_dp_new_table("_DSD");
	if (!dp)
		return;
	acpi_dp_add_gpio(dp, "cd-gpio", path, 0, 0, 1);
	acpi_dp_write(dp);

	acpigen_pop_len();
}
#endif

static struct device_operations dev_ops = {
	.read_resources			= pci_dev_read_resources,
	.set_resources			= pci_dev_set_resources,
	.enable_resources		= pci_dev_enable_resources,
#if CONFIG(HAVE_ACPI_TABLES)
	.acpi_fill_ssdt_generator	= sd_fill_ssdt,
#endif
	.ops_pci			= &pci_dev_ops_pci,
};

static const unsigned short pci_device_ids[] = {
	PCI_DEVICE_ID_INTEL_APL_SD,
	PCI_DEVICE_ID_INTEL_CNL_SD,
	PCI_DEVICE_ID_INTEL_GLK_SD,
	PCI_DEVICE_ID_INTEL_SKL_SD,
	PCI_DEVICE_ID_INTEL_CNP_H_SD,
	PCI_DEVICE_ID_INTEL_ICL_SD,
	PCI_DEVICE_ID_INTEL_CMP_SD,
	0
};

static const struct pci_driver pch_sd __pci_driver = {
	.ops	= &dev_ops,
	.vendor	= PCI_VENDOR_ID_INTEL,
	.devices	= pci_device_ids
};