@@ -54,11 +54,24 @@ static irqreturn_t komeda_kms_irq_handler(int irq, void *data)
return status;
}
+/* Komeda internal resources (pipelines) are shared between crtcs, and resources
+ * are released by disable_crtc. But if user forget disabling crtc like app quit
+ * abnormally, the resources can not be used by another crtc.
+ * Use drop_master to shutdown the device and make sure all the komeda resources
+ * have been released, and can be used for the next usage.
+ */
+static void komeda_kms_drop_master(struct drm_device *dev,
+ struct drm_file *file_priv)
+{
+ drm_atomic_helper_shutdown(dev);
+}
+
static struct drm_driver komeda_kms_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC |
DRIVER_PRIME | DRIVER_HAVE_IRQ,
.lastclose = drm_fb_helper_lastclose,
.irq_handler = komeda_kms_irq_handler,
+ .master_drop = komeda_kms_drop_master,
.gem_free_object_unlocked = drm_gem_cma_free_object,
.gem_vm_ops = &drm_gem_cma_vm_ops,
.dumb_create = komeda_gem_cma_dumb_create,
The komeda internal resources (pipelines) are shared between crtcs, and resources release by disable_crtc. This commit is working for once user forgot disabling crtc like app quit abnomally, and then the resources can not be used by another crtc. Adds drop_master to shutdown the device and make sure all the komeda resources have been released and can be used for the next usage. Signed-off-by: Lowry Li (Arm Technology China) <lowry.li@arm.com> --- drivers/gpu/drm/arm/display/komeda/komeda_kms.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)