drivers/gpu/drm/mgag200/mgag200_g200ew3.c

// SPDX-License-Identifier: GPL-2.0-only

#include <linux/pci.h>

#include <drm/drm_drv.h>

#include "mgag200_drv.h"

/*
 * DRM device
 */

static const struct mgag200_device_info mgag200_g200ew3_device_info =
	MGAG200_DEVICE_INFO_INIT(2048, 2048, 0, true, 0, 1, false);

static resource_size_t mgag200_g200ew3_device_probe_vram(struct mga_device *mdev)
{
	resource_size_t vram_size = resource_size(mdev->vram_res);

	if (vram_size >= 0x1000000)
		vram_size = vram_size - 0x400000;
	return mgag200_probe_vram(mdev->vram, vram_size);
}

struct mga_device *mgag200_g200ew3_device_create(struct pci_dev *pdev,
						 const struct drm_driver *drv,
						 enum mga_type type)
{
	struct mga_device *mdev;
	struct drm_device *dev;
	resource_size_t vram_available;
	int ret;

	mdev = devm_drm_dev_alloc(&pdev->dev, drv, struct mga_device, base);
	if (IS_ERR(mdev))
		return mdev;
	dev = &mdev->base;

	pci_set_drvdata(pdev, dev);

	ret = mgag200_init_pci_options(pdev, 0x41049120, 0x0000b000);
	if (ret)
		return ERR_PTR(ret);

	ret = mgag200_device_preinit(mdev);
	if (ret)
		return ERR_PTR(ret);

	ret = mgag200_device_init(mdev, type, &mgag200_g200ew3_device_info);
	if (ret)
		return ERR_PTR(ret);

	vram_available = mgag200_g200ew3_device_probe_vram(mdev);

	ret = mgag200_modeset_init(mdev, vram_available);
	if (ret)
		return ERR_PTR(ret);

	return mdev;
}