Merge tag 'drm-misc-next-2023-05-11' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 6.5:

UAPI Changes:

Cross-subsystem Changes:
 - arch: Consolidate <asm/fb.h>

Core Changes:
 - aperture: Ignore firmware framebuffers with non-primary devices
 - fbdev: Use fbdev's I/O helpers
 - sysfs: Expose DRM connector ID
 - tests: More tests for drm_rect

Driver Changes:
 - armada: Implement fbdev emulation as a client
 - bridge:
   - fsl-ldb: Support i.MX6SX
   - lt9211: Remove blanking packets
   - lt9611: Remove blanking packets
   - tc358768: Implement input bus formats reporting, fix various
     timings and clocks settings
   - ti-sn65dsi86: Implement wait_hpd_asserted
 - nouveau: Improve NULL pointer checks before dereference
 - panel:
   - nt36523: Support Lenovo J606F
   - st7703: Support Anbernic RG353V-V2
   - new panels: InnoLux G070ACE-L01
 - sun4i: Fix MIPI-DSI dotclock
 - vc4: RGB Range toggle property, BT601 and BT2020 support for HDMI
 - vkms: Convert to drmm helpers, Add reflection and rotation support

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/2pxmxdzsk2ekjy6xvbpj67zrhtwvkkhfspuvdm5pfm5i54hed6@sooct7yq6z4w

1 files changed, 34 insertions, 9 deletions

diff --git a/drivers/gpu/drm/gma500/psb_drv.c b/drivers/gpu/drm/gma500/psb_drv.c
index 2ce96b1b9c74..8b64f61ffaf9 100644
--- a/drivers/gpu/drm/gma500/psb_drv.c
+++ b/drivers/gpu/drm/gma500/psb_drv.c
@@ -7,6 +7,7 @@
  *
  **************************************************************************/
 
+#include <linux/aperture.h>
 #include <linux/cpu.h>
 #include <linux/module.h>
 #include <linux/notifier.h>
@@ -19,7 +20,6 @@
 #include <acpi/video.h>
 
 #include <drm/drm.h>
-#include <drm/drm_aperture.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_file.h>
 #include <drm/drm_ioctl.h>
@@ -414,20 +414,45 @@ out_err:
 	return ret;
 }
 
+/*
+ * Hardware for gma500 is a hybrid device, which both acts as a PCI
+ * device (for legacy vga functionality) but also more like an
+ * integrated display on a SoC where the framebuffer simply
+ * resides in main memory and not in a special PCI bar (that
+ * internally redirects to a stolen range of main memory) like all
+ * other integrated PCI display devices implement it.
+ *
+ * To catch all cases we need to remove conflicting firmware devices
+ * for the stolen system memory and for the VGA functionality. As we
+ * currently cannot easily find the framebuffer's location in stolen
+ * memory, we remove all framebuffers here.
+ *
+ * TODO: Refactor psb_driver_load() to map vdc_reg earlier. Then
+ *       we might be able to read the framebuffer range from the
+ *       device.
+ */
+static int gma_remove_conflicting_framebuffers(struct pci_dev *pdev,
+					       const struct drm_driver *req_driver)
+{
+	resource_size_t base = 0;
+	resource_size_t size = U32_MAX; /* 4 GiB HW limit */
+	const char *name = req_driver->name;
+	int ret;
+
+	ret = aperture_remove_conflicting_devices(base, size, name);
+	if (ret)
+		return ret;
+
+	return __aperture_remove_legacy_vga_devices(pdev);
+}
+
 static int psb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
 	struct drm_psb_private *dev_priv;
 	struct drm_device *dev;
 	int ret;
 
-	/*
-	 * We cannot yet easily find the framebuffer's location in memory. So
-	 * remove all framebuffers here.
-	 *
-	 * TODO: Refactor psb_driver_load() to map vdc_reg earlier. Then we
-	 *       might be able to read the framebuffer range from the device.
-	 */
-	ret = drm_aperture_remove_framebuffers(true, &driver);
+	ret = gma_remove_conflicting_framebuffers(pdev, &driver);
 	if (ret)
 		return ret;