/* Map the framebuffer from the card and configure the core */
static int mga_vram_init(struct mga_device *mdev)
{
void __iomem *mem;
struct apertures_struct *aper = alloc_apertures(1);
if (!aper)
return -ENOMEM;
/* BAR 0 is VRAM */
mdev->mc.vram_base = pci_resource_start(mdev->dev->pdev, 0);
mdev->mc.vram_window = pci_resource_len(mdev->dev->pdev, 0);
aper->ranges[0].base = mdev->mc.vram_base;
aper->ranges[0].size = mdev->mc.vram_window;
drm_fb_helper_remove_conflicting_framebuffers(aper, "mgafb", true);
kfree(aper);
if (!devm_request_mem_region(mdev->dev->dev, mdev->mc.vram_base, mdev->mc.vram_window,
"mgadrmfb_vram")) {
DRM_ERROR("can't reserve VRAM\n");
return -ENXIO;
}
mem = pci_iomap(mdev->dev->pdev, 0, 0);
mdev->mc.vram_size = mga_probe_vram(mdev, mem);
pci_iounmap(mdev->dev->pdev, mem);
return 0;
}
static void sun4i_remove_framebuffers(void)
{
struct apertures_struct *ap;
ap = alloc_apertures(1);
if (!ap)
return;
/* The framebuffer can be located anywhere in RAM */
ap->ranges[0].base = 0;
ap->ranges[0].size = ~0;
drm_fb_helper_remove_conflicting_framebuffers(ap, "sun4i-drm-fb", false);
kfree(ap);
}
static int bochs_kick_out_firmware_fb(struct pci_dev *pdev)
{
struct apertures_struct *ap;
ap = alloc_apertures(1);
if (!ap)
return -ENOMEM;
ap->ranges[0].base = pci_resource_start(pdev, 0);
ap->ranges[0].size = pci_resource_len(pdev, 0);
drm_fb_helper_remove_conflicting_framebuffers(ap, "bochsdrmfb", false);
kfree(ap);
return 0;
}
static void vc4_kick_out_firmware_fb(void)
{
struct apertures_struct *ap;
ap = alloc_apertures(1);
if (!ap)
return;
/* Since VC4 is a UMA device, the simplefb node may have been
* located anywhere in memory.
*/
ap->ranges[0].base = 0;
ap->ranges[0].size = ~0;
drm_fb_helper_remove_conflicting_framebuffers(ap, "vc4drmfb", false);
kfree(ap);
}
static void ast_kick_out_firmware_fb(struct pci_dev *pdev)
{
struct apertures_struct *ap;
bool primary = false;
ap = alloc_apertures(1);
if (!ap)
return;
ap->ranges[0].base = pci_resource_start(pdev, 0);
ap->ranges[0].size = pci_resource_len(pdev, 0);
#ifdef CONFIG_X86
primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
#endif
drm_fb_helper_remove_conflicting_framebuffers(ap, "astdrmfb", primary);
kfree(ap);
}
static void virtio_pci_kick_out_firmware_fb(struct pci_dev *pci_dev)
{
struct apertures_struct *ap;
bool primary;
ap = alloc_apertures(1);
if (!ap)
return;
ap->ranges[0].base = pci_resource_start(pci_dev, 0);
ap->ranges[0].size = pci_resource_len(pci_dev, 0);
primary = pci_dev->resource[PCI_ROM_RESOURCE].flags
& IORESOURCE_ROM_SHADOW;
drm_fb_helper_remove_conflicting_framebuffers(ap, "virtiodrmfb", primary);
kfree(ap);
}
static int sun4i_drv_bind(struct device *dev)
{
struct drm_device *drm;
struct sun4i_drv *drv;
int ret;
drm = drm_dev_alloc(&sun4i_drv_driver, dev);
if (IS_ERR(drm))
return PTR_ERR(drm);
drv = devm_kzalloc(dev, sizeof(*drv), GFP_KERNEL);
if (!drv) {
ret = -ENOMEM;
goto free_drm;
}
dev_set_drvdata(dev, drm);
drm->dev_private = drv;
INIT_LIST_HEAD(&drv->frontend_list);
INIT_LIST_HEAD(&drv->engine_list);
INIT_LIST_HEAD(&drv->tcon_list);
ret = of_reserved_mem_device_init(dev);
if (ret && ret != -ENODEV) {
dev_err(drm->dev, "Couldn't claim our memory region\n");
goto free_drm;
}
drm_mode_config_init(drm);
drm->mode_config.allow_fb_modifiers = true;
ret = component_bind_all(drm->dev, drm);
if (ret) {
dev_err(drm->dev, "Couldn't bind all pipelines components\n");
goto cleanup_mode_config;
}
/* drm_vblank_init calls kcalloc, which can fail */
ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
if (ret)
goto cleanup_mode_config;
drm->irq_enabled = true;
/* Remove early framebuffers (ie. simplefb) */
drm_fb_helper_remove_conflicting_framebuffers(NULL, "sun4i-drm-fb", false);
sun4i_framebuffer_init(drm);
/* Enable connectors polling */
drm_kms_helper_poll_init(drm);
ret = drm_dev_register(drm, 0);
if (ret)
goto finish_poll;
drm_fbdev_generic_setup(drm, 32);
return 0;
finish_poll:
drm_kms_helper_poll_fini(drm);
cleanup_mode_config:
drm_mode_config_cleanup(drm);
of_reserved_mem_device_release(dev);
free_drm:
drm_dev_put(drm);
return ret;
}
