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Commit b3af63ea authored by Xiaowen Wu's avatar Xiaowen Wu
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drm/msm/sde: simplify line padding parameter calculation 



simplify line padding parameter calculation.

Change-Id: Ided88d0a0b08339793235836a0e9f9214e28e62a
Signed-off-by: default avatarXiaowen Wu <wxiaowen@codeaurora.org>
parent e7ac403f

drivers/gpu/drm/msm/sde/sde_crtc.c

+7 −13
Original line number Diff line number Diff line
@@ -6984,8 +6984,7 @@ int sde_crtc_calc_vpadding_param(struct drm_crtc_state *state, 
{

	struct sde_kms *kms;

	struct sde_crtc_state *cstate = to_sde_crtc_state(state);

	u32 y_blocks, y_remain, y_start;

	u32 h_start, h_blocks, h_end, h_total;

	u32 y_remain, y_start, y_end;

	u32 m, n;



	kms = _sde_crtc_get_kms(state->crtc);
@@ -7004,19 +7003,14 @@ int sde_crtc_calc_vpadding_param(struct drm_crtc_state *state, 


	m = cstate->padding_active;

	n = m + cstate->padding_dummy;

	y_blocks = crtc_y / m;

	y_remain = crtc_y - y_blocks * m;

	y_start = y_remain + y_blocks * n;

	h_start = m - y_remain;

	h_blocks = (crtc_h - h_start) / m;

	h_end = (crtc_h - h_start) - h_blocks * m;

	if (h_end)

		h_end += cstate->padding_dummy;

	h_total = h_start + h_end + h_blocks * n;



	y_remain = crtc_y % m;

	y_start = y_remain + crtc_y / m * n;

	y_end = (crtc_y + crtc_h - 1) / m * n + (crtc_y + crtc_h - 1) % m;



	*padding_y = y_start;

	*padding_start = h_start;

	*padding_height = h_total;

	*padding_start = m - y_remain;

	*padding_height = y_end - y_start + 1;



	return 0;

}