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Re: [RFC PATCH 7/9] drm/rockchip: force enable vop when do mode setting

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On Tue, Dec 01, 2015 at 11:32:01AM +0800, Mark Yao wrote:
> When do mode setting, mean that we want to enable display output,
> but sometimes, vop_crtc_enable is after mode_set, we can't allow
> that, so force enable vop in mode setting.
> 
> Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
> ---
>  drivers/gpu/drm/rockchip/rockchip_drm_vop.c |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> index c65b454..7c07537 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> @@ -1110,6 +1110,7 @@ static void vop_crtc_mode_set_nofb(struct drm_crtc *crtc)
>  	u16 vact_end = vact_st + vdisplay;
>  	uint32_t val;
>  
> +	vop_crtc_enable(crtc);
>  	/*
>  	 * If dclk rate is zero, mean that scanout is stop,
>  	 * we don't need wait any more.

Have you considered simply moving everything into ->enable()? That's
what I did for Tegra, for much the same reasons that you gave in the
commit message. Doing so gives you a much simpler call graph. Really
the only thing you need to do is move around the code, and perhaps a
different way to get ahold of the display mode, but you can use the
Tegra driver as a reference for how to do that.

Thierry

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[RFC PATCH 0/9] drm/rockchip: covert to support atomic API Mark Yao <mark.yao@rock-chips.com> - 2015-12-01 04:30 +0100
  [RFC PATCH 2/9] drm/rockchip: Use new vblank api drm_crtc_vblank_* Mark Yao <mark.yao@rock-chips.com> - 2015-12-01 04:30 +0100
    Re: [RFC PATCH 2/9] drm/rockchip: Use new vblank api drm_crtc_vblank_* Daniel Stone <daniel@fooishbar.org> - 2015-12-01 09:00 +0100
      Re: [RFC PATCH 2/9] drm/rockchip: Use new vblank api drm_crtc_vblank_* Mark yao <mark.yao@rock-chips.com> - 2015-12-01 09:40 +0100
        Re: [RFC PATCH 2/9] drm/rockchip: Use new vblank api  drm_crtc_vblank_* Daniel Vetter <daniel@ffwll.ch> - 2015-12-01 10:10 +0100
          Re: [RFC PATCH 2/9] drm/rockchip: Use new vblank api drm_crtc_vblank_* Mark yao <mark.yao@rock-chips.com> - 2015-12-01 10:50 +0100
  [RFC PATCH 4/9] drm/rockchip: support atomic asynchronous commit Mark Yao <mark.yao@rock-chips.com> - 2015-12-01 04:30 +0100
  [RFC PATCH 1/9] drm/rockchip: vop: replace dpms with enable/disable Mark Yao <mark.yao@rock-chips.com> - 2015-12-01 04:30 +0100
  [RFC PATCH 3/9] drm/rockchip: Convert to support atomic API Mark Yao <mark.yao@rock-chips.com> - 2015-12-01 04:30 +0100
    Re: [RFC PATCH 3/9] drm/rockchip: Convert to support atomic API Daniel Stone <daniel@fooishbar.org> - 2015-12-01 09:20 +0100
      Re: [RFC PATCH 3/9] drm/rockchip: Convert to support atomic API Mark yao <mark.yao@rock-chips.com> - 2015-12-01 10:30 +0100
      Re: [RFC PATCH 3/9] drm/rockchip: Convert to support atomic API Mark yao <mark.yao@rock-chips.com> - 2015-12-01 10:40 +0100
        Re: [RFC PATCH 3/9] drm/rockchip: Convert to support atomic API Daniel Stone <daniel@fooishbar.org> - 2015-12-02 15:20 +0100
          Re: [RFC PATCH 3/9] drm/rockchip: Convert to support atomic API Daniel Stone <daniel@fooishbar.org> - 2015-12-02 15:30 +0100
          Re: [RFC PATCH 3/9] drm/rockchip: Convert to support atomic API Mark yao <mark.yao@rock-chips.com> - 2015-12-11 07:30 +0100
  [RFC PATCH 8/9] drm: bridge/dw_hdmi: Covert to support atomic API Mark Yao <mark.yao@rock-chips.com> - 2015-12-01 04:40 +0100
    Re: [RFC PATCH 8/9] drm: bridge/dw_hdmi: Covert to support atomic API Daniel Vetter <daniel@ffwll.ch> - 2015-12-01 08:30 +0100
      Re: [RFC PATCH 8/9] drm: bridge/dw_hdmi: Covert to support atomic  API Mark yao <mark.yao@rock-chips.com> - 2015-12-01 09:10 +0100
    [PATCH] drm: bridge/dw_hdmi: add atomic API support Mark Yao <mark.yao@rock-chips.com> - 2015-12-01 09:20 +0100
  [RFC PATCH 7/9] drm/rockchip: force enable vop when do mode setting Mark Yao <mark.yao@rock-chips.com> - 2015-12-01 04:40 +0100
    Re: [RFC PATCH 7/9] drm/rockchip: force enable vop when do mode  setting Thierry Reding <thierry.reding@gmail.com> - 2015-12-02 18:00 +0100
      Re: [RFC PATCH 7/9] drm/rockchip: force enable vop when do mode  setting Daniel Vetter <daniel@ffwll.ch> - 2015-12-02 23:20 +0100
        Re: [RFC PATCH 7/9] drm/rockchip: force enable vop when do mode setting Mark yao <mark.yao@rock-chips.com> - 2015-12-03 03:00 +0100
  [RFC PATCH 6/9] drm/rockchip: direct config connecter gate and out_mode Mark Yao <mark.yao@rock-chips.com> - 2015-12-01 04:40 +0100
  [RFC PATCH 9/9] drm/rockchip: dw_hdmi: use encoder enable function Mark Yao <mark.yao@rock-chips.com> - 2015-12-01 04:40 +0100
  [RFC PATCH 5/9] drm/rockchip: Optimization vop mode set Mark Yao <mark.yao@rock-chips.com> - 2015-12-01 04:40 +0100

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