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Groups > linux.kernel > #1273814

[PATCH v4 03/13] drm/rockchip: return a true clock rate to adjusted_mode

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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 <zyw@rock-chips.com>

---

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

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Thread

[PATCH v4 0/13] Add mipi dsi support for rk3288 Chris Zhong <zyw@rock-chips.com> - 2015-11-20 09:20 +0100
  [PATCH v4 05/13] Documentation: dt-bindings: Add bindings for Synopsys DW MIPI DSI DRM bridge driver Chris Zhong <zyw@rock-chips.com> - 2015-11-20 09:20 +0100
    Re: [PATCH v4 05/13] Documentation: dt-bindings: Add bindings for  Synopsys DW MIPI DSI DRM bridge driver Rob Herring <robh@kernel.org> - 2015-11-20 15:40 +0100
  [PATCH v4 02/13] clk: rockchip: add mipidsi clocks on rk3288 Chris Zhong <zyw@rock-chips.com> - 2015-11-20 09:20 +0100
  [PATCH v4 07/13] drm: rockchip: Support Synopsys DesignWare MIPI DSI host controller Chris Zhong <zyw@rock-chips.com> - 2015-11-20 09:20 +0100
  [PATCH v4 01/13] clk: rockchip: add id for mipidsi sclk on rk3288 Chris Zhong <zyw@rock-chips.com> - 2015-11-20 09:20 +0100
    Re: [PATCH v4 01/13] clk: rockchip: add id for mipidsi sclk on rk3288 Heiko Stübner <heiko@sntech.de> - 2015-11-23 18:40 +0100
  [PATCH v4 06/13] drm/bridge: Add Synopsys DesignWare MIPI DSI host controller driver Chris Zhong <zyw@rock-chips.com> - 2015-11-20 09:20 +0100
    Re: [PATCH v4 06/13] drm/bridge: Add Synopsys DesignWare MIPI DSI  host controller driver Thierry Reding <treding@nvidia.com> - 2015-11-20 17:10 +0100
      Re: [PATCH v4 06/13] drm/bridge: Add Synopsys DesignWare MIPI DSI  host controller driver Chris Zhong <zyw@rock-chips.com> - 2015-11-26 08:10 +0100
        Re: [PATCH v4 06/13] drm/bridge: Add Synopsys DesignWare MIPI DSI  host controller driver Thierry Reding <treding@nvidia.com> - 2015-11-26 09:10 +0100
          Re: [PATCH v4 06/13] drm/bridge: Add Synopsys DesignWare MIPI DSI  host controller driver Chris Zhong <zyw@rock-chips.com> - 2015-11-26 11:10 +0100
  [PATCH v4 03/13] drm/rockchip: return a true clock rate to adjusted_mode Chris Zhong <zyw@rock-chips.com> - 2015-11-20 09:20 +0100
    Re: [PATCH v4 03/13] drm/rockchip: return a true clock rate to adjusted_mode Mark yao <mark.yao@rock-chips.com> - 2015-11-20 10:00 +0100
  [PATCH v4 08/13] Documentation: dt-bindings: Add bindings for rk3288 DW MIPI DSI driver Chris Zhong <zyw@rock-chips.com> - 2015-11-20 09:20 +0100

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