Commit b59b8de3 authored Jan 06, 2016 by Chris Zhong Committed by Mark Yao Jan 06, 2016

drm/rockchip: return a true clock rate to adjusted_mode



Since the mipi dsi driver need to use the clock of vop to make the
calculation of Blanking. But sometimes the clock driver can not set a
accurate clock_rate for vop, get it by clk_round_rate before mode_set,
so we can get the true value.

Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Acked-by: Mark Yao <mark.yao@rock-chips.com>

parent c11b8989

drivers/gpu/drm/rockchip/rockchip_drm_vop.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -878,9 +878,14 @@ static bool vop_crtc_mode_fixup(struct drm_crtc *crtc,
		const struct drm_display_mode *mode,
		struct drm_display_mode *adjusted_mode)
		{
		struct vop *vop = to_vop(crtc);

		if (adjusted_mode->htotal == 0 \|\| adjusted_mode->vtotal == 0)
		return false;

		adjusted_mode->clock =
		clk_round_rate(vop->dclk, mode->clock * 1000) / 1000;

		return true;
		}