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Commit 90056126 authored by Harigovindan P's avatar Harigovindan P Committed by Gerrit - the friendly Code Review server
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disp: msm: dsi: dual dsi constant fps porch calculation 



This change adds porch calculation support to maintain
constant fps during clock switch for dual DSI controller.

Change-Id: I9a7e6d1f6d028355dba30aafe0234fc30c153059
Signed-off-by: default avatarHarigovindan P <harigovi@codeaurora.org>
parent d95bd8bf

msm/dsi/dsi_display.c

+4 −2
Original line number Diff line number Diff line
@@ -6090,6 +6090,7 @@ void dsi_display_adjust_mode_timing(struct dsi_display *display, 
	case DSI_DYN_CLK_TYPE_CONST_FPS_ADJUST_HFP:

		vtotal = DSI_V_TOTAL(&dsi_mode->timing);

		old_htotal = DSI_H_TOTAL_DSC(&dsi_mode->timing);

		do_div(old_htotal, display->ctrl_count);

		new_htotal = dsi_mode->timing.clk_rate_hz * lanes;

		div = bpp * vtotal * dsi_mode->timing.refresh_rate;

		if (dsi_display_is_type_cphy(display)) {
@@ -6099,14 +6100,15 @@ void dsi_display_adjust_mode_timing(struct dsi_display *display, 
		do_div(new_htotal, div);

		if (old_htotal > new_htotal)

			dsi_mode->timing.h_front_porch -=

					(old_htotal - new_htotal);

			((old_htotal - new_htotal) * display->ctrl_count);

		else

			dsi_mode->timing.h_front_porch +=

					(new_htotal - old_htotal);

			((new_htotal - old_htotal) * display->ctrl_count);

		break;



	case DSI_DYN_CLK_TYPE_CONST_FPS_ADJUST_VFP:

		htotal = DSI_H_TOTAL_DSC(&dsi_mode->timing);

		do_div(htotal, display->ctrl_count);

		new_vtotal = dsi_mode->timing.clk_rate_hz * lanes;

		div = bpp * htotal * dsi_mode->timing.refresh_rate;

		if (dsi_display_is_type_cphy(display)) {