diff options
| -rw-r--r-- | drivers/gpu/drm/arm/hdlcd_drv.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/arm/hdlcd_drv.c b/drivers/gpu/drm/arm/hdlcd_drv.c index e89ae0ec60eb..60a27886248c 100644 --- a/drivers/gpu/drm/arm/hdlcd_drv.c +++ b/drivers/gpu/drm/arm/hdlcd_drv.c @@ -21,6 +21,7 @@ #include <linux/platform_device.h> #include <linux/pm_runtime.h> +#include <drm/drm_aperture.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_crtc.h> #include <drm/drm_debugfs.h> @@ -314,6 +315,15 @@ static int hdlcd_drm_bind(struct device *dev) goto err_vblank; } + /* + * If EFI left us running, take over from simple framebuffer + * drivers. Read HDLCD_REG_COMMAND to see if we are enabled. + */ + if (hdlcd_read(hdlcd, HDLCD_REG_COMMAND)) { + hdlcd_write(hdlcd, HDLCD_REG_COMMAND, 0); + drm_aperture_remove_framebuffers(false, &hdlcd_driver); + } + drm_mode_config_reset(drm); drm_kms_helper_poll_init(drm); |