From mboxrd@z Thu Jan 1 00:00:00 1970 From: zyw@rock-chips.com (Chris Zhong) Date: Thu, 26 Nov 2015 15:50:17 +0800 Subject: [PATCH v5 03/11] drm/rockchip: return a true clock rate to adjusted_mode In-Reply-To: <1448524225-5489-1-git-send-email-zyw@rock-chips.com> References: <1448524225-5489-1-git-send-email-zyw@rock-chips.com> Message-ID: <1448524225-5489-4-git-send-email-zyw@rock-chips.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 Acked-by: Mark Yao --- Changes in v5: None Changes in v4: - use clk_round_rate to check the clock rate in vop_crtc_mode_fixup Changes in v3: None Changes in v2: None drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c index 5d8ae5e..eff545b 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c @@ -1136,9 +1136,14 @@ 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; } -- 2.6.3