From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Zhong Subject: [PATCH 02/10] drm/rockchip: return a true clock rate to adjusted_mode Date: Sat, 10 Oct 2015 17:55:22 +0800 Message-ID: <1444470930-17150-3-git-send-email-zyw@rock-chips.com> References: <1444470930-17150-1-git-send-email-zyw@rock-chips.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1444470930-17150-1-git-send-email-zyw-TNX95d0MmH7DzftRWevZcw@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+glpar-linux-rockchip=m.gmane.org-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org To: heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org Cc: David Airlie , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, Chris Zhong , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Mark Yao List-Id: dri-devel@lists.freedesktop.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 --- 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) { -- 2.6.1