From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932255AbbJaM5E (ORCPT ); Sat, 31 Oct 2015 08:57:04 -0400 Received: from mail-qk0-f172.google.com ([209.85.220.172]:33996 "EHLO mail-qk0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932077AbbJaM46 (ORCPT ); Sat, 31 Oct 2015 08:56:58 -0400 From: Chris Zhong To: heiko@sntech.de, linux-rockchip@lists.infradead.org Cc: Chris Zhong , Mark Yao , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, David Airlie , linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 03/13] drm/rockchip: return a true clock rate to adjusted_mode Date: Sat, 31 Oct 2015 20:55:59 +0800 Message-Id: <1446296170-3702-4-git-send-email-zyw@rock-chips.com> X-Mailer: git-send-email 2.6.2 In-Reply-To: <1446296170-3702-1-git-send-email-zyw@rock-chips.com> References: <1446296170-3702-1-git-send-email-zyw@rock-chips.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Sometimes the clock driver can not set a accurate clock_rate for vop, get the true rate of vop_dclk and set it back to adjusted_mode, since the mipi dsi driver need to use the clock to make the calculation of Blanking. Signed-off-by: Chris Zhong --- Changes in v2: None drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c index 5d8ae5e..9986b311ed 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c @@ -1232,6 +1232,12 @@ static int vop_crtc_mode_set(struct drm_crtc *crtc, reset_control_deassert(vop->dclk_rst); clk_set_rate(vop->dclk, adjusted_mode->clock * 1000); + + /* + * Sometimes the clock driver can not set a accurate clock_rate for vop, + * get the true rate of vop_dclk and set it back to adjusted_mode. + */ + adjusted_mode->clock = clk_get_rate(vop->dclk) / 1000; out: ret_clk = clk_enable(vop->dclk); if (ret_clk < 0) { -- 2.6.2