soc/amd/common: Add a common graphics block device driver for AMD SoCs

This change adds a common graphics block device driver for AMD
SoCs. In follow-up CLs, this driver will be utilized for Picasso.

This driver is added to enable ACPI name and SSDT generation for
graphics controller.

BUG=b:153858769

Change-Id: I45e2b98fede41e49158d9ff9f93785a34c392c22
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40675
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
This commit is contained in:
Furquan Shaikh 2020-04-23 13:59:00 -07:00
parent a1cd7eb93e
commit c82aabca01
3 changed files with 37 additions and 0 deletions

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config SOC_AMD_COMMON_BLOCK_GRAPHICS
bool
default n
help
Select this option to use AMD common graphics driver support.

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ramstage-$(CONFIG_SOC_AMD_COMMON_BLOCK_GRAPHICS) += graphics.c

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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* This file is part of the coreboot project. */
#include <device/pci.h>
#include <device/pci_ids.h>
static const char *graphics_acpi_name(const struct device *dev)
{
return "IGFX";
}
static const struct device_operations graphics_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = pci_dev_init,
.ops_pci = &pci_dev_ops_pci,
.write_acpi_tables = pci_rom_write_acpi_tables,
.acpi_fill_ssdt = pci_rom_ssdt,
.acpi_name = graphics_acpi_name,
};
static const unsigned short pci_device_ids[] = {
0,
};
static const struct pci_driver graphics_driver __pci_driver = {
.ops = &graphics_ops,
.vendor = PCI_VENDOR_ID_ATI,
.devices = pci_device_ids,
};