linux-kernel - Re: [PATCH] drm/fsl-dcu: add COMMON

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Message-ID: <20160503081806.GE14148@phenom.ffwll.local>
Date:	Tue, 3 May 2016 10:18:06 +0200
From:	Daniel Vetter <daniel@...ll.ch>
To:	Stefan Agner <stefan@...er.ch>
Cc:	Arnd Bergmann <arnd@...db.de>, David Airlie <airlied@...ux.ie>,
	Alison Wang <alison.wang@...escale.com>,
	linux-arm-kernel@...ts.infradead.org,
	dri-devel@...ts.freedesktop.org,
	Xiubo Li <lixiubo@...s.chinamobile.com>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Jianwei Wang <jianwei.wang.chn@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/fsl-dcu: add COMMON_CLK dependency

On Mon, May 02, 2016 at 02:22:04PM -0700, Stefan Agner wrote:
> On 2016-05-02 04:00, Arnd Bergmann wrote:
> > The fsl dcu now uses the clk-provider interfaces, which are not available
> > when CONFIG_COMMON_CLK is disabled:
> > 
> > drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c: In function 'fsl_dcu_drm_probe':
> > drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c:362:20: error: implicit
> > declaration of function '__clk_get_name'
> > [-Werror=implicit-function-declaration]
> >   pix_clk_in_name = __clk_get_name(pix_clk_in);
> > 
> > This adds a Kconfig dependency to prevent the driver from being enabled
> > in this case.
> > 
> > Signed-off-by: Arnd Bergmann <arnd@...db.de>
> > Fixes: 2d701449bce1 ("drm/fsl-dcu: use common clock framework for
> > pixel clock divider")
> 
> Oh right, thx!
> 
> Acked-by: Stefan Agner <stefan@...er.ch>
> 
> @Dave, can you pick that up directly or do you prefer a pull request?

Smashed into drm-misc, thanks.
-Daniel

> 
> --
> Stefan
> 
> > ---
> >  drivers/gpu/drm/fsl-dcu/Kconfig | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/gpu/drm/fsl-dcu/Kconfig b/drivers/gpu/drm/fsl-dcu/Kconfig
> > index c78cf3f605d0..b9c714de6e40 100644
> > --- a/drivers/gpu/drm/fsl-dcu/Kconfig
> > +++ b/drivers/gpu/drm/fsl-dcu/Kconfig
> > @@ -1,6 +1,6 @@
> >  config DRM_FSL_DCU
> >  	tristate "DRM Support for Freescale DCU"
> > -	depends on DRM && OF && ARM
> > +	depends on DRM && OF && ARM && COMMON_CLK
> >  	select BACKLIGHT_CLASS_DEVICE
> >  	select BACKLIGHT_LCD_SUPPORT
> >  	select DRM_KMS_HELPER

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch