Commit d74ed937 authored Jun 23, 2014 by Rahul Sharma Committed by Inki Dae Jun 24, 2014

drm/exynos: soft reset mixer before reconfigure after power-on



Mixer soft reset is a recommended step before reconfiguring
the mixer after power on. Mixer looses the previous state of
DMAs if soft reset. This is the recommendation from the
hardware team.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

parent 5c0f4829

drivers/gpu/drm/exynos/exynos_mixer.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1085,6 +1085,8 @@ static void mixer_poweron(struct exynos_drm_manager *mgr)
		ctx->powered = true;
		mutex_unlock(&ctx->mixer_mutex);

		mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);

		mixer_reg_write(res, MXR_INT_EN, ctx->int_en);
		mixer_win_reset(ctx);