Re: [PATCH v10 17/17] drm/exynos: split exynos_crtc->dpms in enable() and disable()

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Hi Inki,

2015-06-03 Inki Dae <inki.dae@xxxxxxxxxxx>:

> Hi,
> 
> On 2015년 06월 02일 00:04, Gustavo Padovan wrote:
> > From: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>
> > 
> > To follow more closely the new atomic API we split the dpms()
> > helper into the enable() and disable() helper to get exactly the
> > same semantics.
> > 
> > Signed-off-by: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>
> > ---
> >  drivers/gpu/drm/exynos/exynos7_drm_decon.c | 87 ++++++------------------------
> >  drivers/gpu/drm/exynos/exynos_drm_crtc.c   |  8 +--
> >  drivers/gpu/drm/exynos/exynos_drm_drv.h    |  6 ++-
> >  drivers/gpu/drm/exynos/exynos_drm_fimd.c   | 69 +++++-------------------
> >  drivers/gpu/drm/exynos/exynos_drm_vidi.c   | 53 +++++++-----------
> >  drivers/gpu/drm/exynos/exynos_mixer.c      | 26 +++------
> >  6 files changed, 62 insertions(+), 187 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/exynos/exynos7_drm_decon.c b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
> > index f29e4be..d659ba2 100644
> > --- a/drivers/gpu/drm/exynos/exynos7_drm_decon.c
> > +++ b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
> > @@ -603,75 +603,39 @@ static void decon_init(struct decon_context *ctx)
> >  		writel(VIDCON1_VCLK_HOLD, ctx->regs + VIDCON1(0));
> >  }
> >  
> > -static int decon_poweron(struct decon_context *ctx)
> > +static void decon_enable(struct exynos_drm_crtc *crtc)
> >  {
> > -	int ret;
> > +	struct decon_context *ctx = crtc->ctx;
> >  
> >  	if (!ctx->suspended)
> > -		return 0;
> > +		return;
> >  
> >  	ctx->suspended = false;
> >  
> >  	pm_runtime_get_sync(ctx->dev);
> >  
> > -	ret = clk_prepare_enable(ctx->pclk);
> > -	if (ret < 0) {
> > -		DRM_ERROR("Failed to prepare_enable the pclk [%d]\n", ret);
> > -		goto pclk_err;
> > -	}
> > -
> > -	ret = clk_prepare_enable(ctx->aclk);
> > -	if (ret < 0) {
> > -		DRM_ERROR("Failed to prepare_enable the aclk [%d]\n", ret);
> > -		goto aclk_err;
> > -	}
> > -
> > -	ret = clk_prepare_enable(ctx->eclk);
> > -	if  (ret < 0) {
> > -		DRM_ERROR("Failed to prepare_enable the eclk [%d]\n", ret);
> > -		goto eclk_err;
> > -	}
> > -
> > -	ret = clk_prepare_enable(ctx->vclk);
> > -	if  (ret < 0) {
> > -		DRM_ERROR("Failed to prepare_enable the vclk [%d]\n", ret);
> > -		goto vclk_err;
> > -	}
> > +	clk_prepare_enable(ctx->pclk);
> > +	clk_prepare_enable(ctx->aclk);
> > +	clk_prepare_enable(ctx->eclk);
> > +	clk_prepare_enable(ctx->vclk);
> 
> Merged this patch series to exynos-drm-next. However, this patch
> especially above codes is required for more clean-up. Even though
> decon_enable function never return error number, I think its internal
> codes should be considered for some exception cases to check where an
> error occurred at. So could you post the clean-up patch?

Thanks for merging the patches! I will send follow-up patches shortly to
add checks and errors messages back.

	Gustavo
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