linux-kernel - Re: [PATCH v3 08/12] drm: remove include of drmP.h from drm_modeset

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Message-ID: <20190109215354.GZ21184@phenom.ffwll.local>
Date:   Wed, 9 Jan 2019 22:53:54 +0100
From:   Daniel Vetter <daniel@...ll.ch>
To:     Sam Ravnborg <sam@...nborg.org>
Cc:     Daniel Vetter <daniel@...ll.ch>, David Airlie <airlied@...ux.ie>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Sean Paul <sean@...rly.run>,
        David Lechner <david@...hnology.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Noralf Trønnes <noralf@...nnes.org>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        Alexey Brodkin <abrodkin@...opsys.com>,
        Archit Taneja <architt@...eaurora.org>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
Subject: Re: [PATCH v3 08/12] drm: remove include of drmP.h from
 drm_modeset_helper.h

On Tue, Jan 08, 2019 at 08:29:35PM +0100, Sam Ravnborg wrote:
> drmP.h is an relic from the days when there was a single header file.
> To enable the removal of drmP.h from all users drop include
> of drmP.h from drm_modeset_helper.h.
> 
> A few files relied on the file included in drmP.h - add explicit
> include statements to these files.
> Build tested with arm and x86.
> 
> v2:
> - Add forward declarations to drm_modeset_helper.h (Laurent Pinchart)
> 
> Signed-off-by: Sam Ravnborg <sam@...nborg.org>
> Reviewed-by: Laurent Pinchart <Laurent.pinchart@...asonboard.com>
> Cc: Alexey Brodkin <abrodkin@...opsys.com>
> Cc: David Airlie <airlied@...ux.ie>
> Cc: Daniel Vetter <daniel@...ll.ch>
> Cc: Archit Taneja <architt@...eaurora.org>
> Cc: Andrzej Hajda <a.hajda@...sung.com>
> Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
> Cc: Maxime Ripard <maxime.ripard@...tlin.com>
> Cc: Sean Paul <sean@...rly.run>
> Cc: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>

This one here breaks tinydrm without the tinydrm patch first. I reorderd
while applying. It also breaks kirin (and maybe more, I didn't check), so
I've left this one out for now.
-Daniel

> ---
>  drivers/gpu/drm/arc/arcpgu_sim.c     | 1 +
>  drivers/gpu/drm/bridge/cdns-dsi.c    | 2 ++
>  drivers/gpu/drm/drm_modeset_helper.c | 2 ++
>  drivers/gpu/drm/rcar-du/rcar_lvds.c  | 1 +
>  include/drm/drm_modeset_helper.h     | 6 +++++-
>  5 files changed, 11 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/arc/arcpgu_sim.c b/drivers/gpu/drm/arc/arcpgu_sim.c
> index 68629e614990..3b7556f62230 100644
> --- a/drivers/gpu/drm/arc/arcpgu_sim.c
> +++ b/drivers/gpu/drm/arc/arcpgu_sim.c
> @@ -14,6 +14,7 @@
>   *
>   */
>  
> +#include <drm/drm_device.h>
>  #include <drm/drm_crtc_helper.h>
>  #include <drm/drm_atomic_helper.h>
>  
> diff --git a/drivers/gpu/drm/bridge/cdns-dsi.c b/drivers/gpu/drm/bridge/cdns-dsi.c
> index ce9496d13986..4b73d0969468 100644
> --- a/drivers/gpu/drm/bridge/cdns-dsi.c
> +++ b/drivers/gpu/drm/bridge/cdns-dsi.c
> @@ -8,11 +8,13 @@
>  #include <drm/drm_atomic_helper.h>
>  #include <drm/drm_bridge.h>
>  #include <drm/drm_crtc_helper.h>
> +#include <drm/drm_drv.h>
>  #include <drm/drm_mipi_dsi.h>
>  #include <drm/drm_panel.h>
>  #include <video/mipi_display.h>
>  
>  #include <linux/clk.h>
> +#include <linux/interrupt.h>
>  #include <linux/iopoll.h>
>  #include <linux/module.h>
>  #include <linux/of_address.h>
> diff --git a/drivers/gpu/drm/drm_modeset_helper.c b/drivers/gpu/drm/drm_modeset_helper.c
> index 9150fa385bba..9bc1ef788c77 100644
> --- a/drivers/gpu/drm/drm_modeset_helper.c
> +++ b/drivers/gpu/drm/drm_modeset_helper.c
> @@ -23,8 +23,10 @@
>  #include <drm/drm_atomic_helper.h>
>  #include <drm/drm_crtc_helper.h>
>  #include <drm/drm_fb_helper.h>
> +#include <drm/drm_fourcc.h>
>  #include <drm/drm_modeset_helper.h>
>  #include <drm/drm_plane_helper.h>
> +#include <drm/drm_print.h>
>  
>  /**
>   * DOC: aux kms helpers
> diff --git a/drivers/gpu/drm/rcar-du/rcar_lvds.c b/drivers/gpu/drm/rcar-du/rcar_lvds.c
> index 534a128a869d..8010ed702509 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_lvds.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_lvds.c
> @@ -10,6 +10,7 @@
>  #include <linux/clk.h>
>  #include <linux/delay.h>
>  #include <linux/io.h>
> +#include <linux/module.h>
>  #include <linux/of.h>
>  #include <linux/of_device.h>
>  #include <linux/of_graph.h>
> diff --git a/include/drm/drm_modeset_helper.h b/include/drm/drm_modeset_helper.h
> index efa337f03129..995fd981cab0 100644
> --- a/include/drm/drm_modeset_helper.h
> +++ b/include/drm/drm_modeset_helper.h
> @@ -23,7 +23,11 @@
>  #ifndef __DRM_KMS_HELPER_H__
>  #define __DRM_KMS_HELPER_H__
>  
> -#include <drm/drmP.h>
> +struct drm_crtc;
> +struct drm_crtc_funcs;
> +struct drm_device;
> +struct drm_framebuffer;
> +struct drm_mode_fb_cmd2;
>  
>  void drm_helper_move_panel_connectors_to_head(struct drm_device *);
>  
> -- 
> 2.12.0
> 

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