[PATCH] drm: sti: add moduleparam to disable fbdev

[Daniel Vetter]

On Wed, Jul 08, 2015 at 02:50:25PM +0200, Benjamin Gaignard wrote:
> Useful to avoid recompiling to enable/disable fbdev.
> 
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard at linaro.org>

Can we just do this in the fbdev helper instead of reinventing wheels in
each driver? Archit Taneja has been looking into that.

Thanks, Daniel

> ---
>  drivers/gpu/drm/sti/Kconfig       |  6 ------
>  drivers/gpu/drm/sti/sti_drm_drv.c | 13 ++++++++-----
>  2 files changed, 8 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/gpu/drm/sti/Kconfig b/drivers/gpu/drm/sti/Kconfig
> index fbccc10..e3aa5af 100644
> --- a/drivers/gpu/drm/sti/Kconfig
> +++ b/drivers/gpu/drm/sti/Kconfig
> @@ -9,9 +9,3 @@ config DRM_STI
>  	select FW_LOADER_USER_HELPER_FALLBACK
>  	help
>  	  Choose this option to enable DRM on STM stiH41x chipset
> -
> -config DRM_STI_FBDEV
> -	bool "DRM frame buffer device for STMicroelectronics SoC stiH41x Serie"
> -	depends on DRM_STI
> -	help
> -	  Choose this option to enable FBDEV on top of DRM for STM stiH41x chipset
> diff --git a/drivers/gpu/drm/sti/sti_drm_drv.c b/drivers/gpu/drm/sti/sti_drm_drv.c
> index 59d558b..d0fb54a 100644
> --- a/drivers/gpu/drm/sti/sti_drm_drv.c
> +++ b/drivers/gpu/drm/sti/sti_drm_drv.c
> @@ -30,6 +30,10 @@
>  #define STI_MAX_FB_HEIGHT	4096
>  #define STI_MAX_FB_WIDTH	4096
>  
> +static bool fbdev;
> +MODULE_PARM_DESC(fbdev, "Enable fbdev compat layer");
> +module_param(fbdev, bool, S_IRUGO | S_IWUSR);
> +
>  static void sti_drm_atomic_schedule(struct sti_drm_private *private,
>  				  struct drm_atomic_state *state)
>  {
> @@ -160,11 +164,10 @@ static int sti_drm_load(struct drm_device *dev, unsigned long flags)
>  
>  	drm_mode_config_reset(dev);
>  
> -#ifdef CONFIG_DRM_STI_FBDEV
> -	drm_fbdev_cma_init(dev, 32,
> -		   dev->mode_config.num_crtc,
> -		   dev->mode_config.num_connector);
> -#endif
> +	if (fbdev)
> +		drm_fbdev_cma_init(dev, 32, dev->mode_config.num_crtc,
> +				   dev->mode_config.num_connector);
> +
>  	return 0;
>  }
>  
> -- 
> 1.9.1
> 
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> dri-devel at lists.freedesktop.org
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch