Re: [PATCH 06/19] drm/radeon/atom: Move prototype into shared location

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On Fri, Nov 6, 2020 at 4:50 PM Lee Jones <lee.jones@xxxxxxxxxx> wrote:
>
> Both source files include atom.h, which seems like a reasonable
> location to place an atom based function into.
>
> Fixes the following W=1 kernel build warning(s):
>
>  drivers/gpu/drm/radeon/radeon_atombios.c:1791:6: warning: no previous prototype for ‘radeon_atom_get_tv_timings’ [-Wmissing-prototypes]
>  1791 | bool radeon_atom_get_tv_timings(struct radeon_device *rdev, int index,
>  | ^~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Cc: Alex Deucher <alexander.deucher@xxxxxxx>
> Cc: "Christian König" <christian.koenig@xxxxxxx>
> Cc: David Airlie <airlied@xxxxxxxx>
> Cc: Daniel Vetter <daniel@xxxxxxxx>
> Cc: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
> Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
> Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
> ---
>  drivers/gpu/drm/radeon/atom.h              | 6 ++++++
>  drivers/gpu/drm/radeon/atombios_encoders.c | 4 ----
>  2 files changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/atom.h b/drivers/gpu/drm/radeon/atom.h
> index 1bf06c91cd959..cb93b83114dbe 100644
> --- a/drivers/gpu/drm/radeon/atom.h
> +++ b/drivers/gpu/drm/radeon/atom.h
> @@ -154,6 +154,12 @@ bool atom_parse_data_header(struct atom_context *ctx, int index, uint16_t *size,
>  bool atom_parse_cmd_header(struct atom_context *ctx, int index,
>                            uint8_t *frev, uint8_t *crev);
>  int atom_allocate_fb_scratch(struct atom_context *ctx);
> +
> +struct drm_display_mode;
> +struct radeon_device;
> +bool radeon_atom_get_tv_timings(struct radeon_device *rdev, int index,
> +                               struct drm_display_mode *mode);
> +

I'd prefer to add radeon_atombios.h for all of the stuff exported from
radeon_atombios.c.  When you add the .h file, please take the
copyright license from the .c file which implements the functions.

Thanks,

Alex

>  #include "atom-types.h"
>  #include "atombios.h"
>  #include "ObjectID.h"
> diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c
> index cc5ee1b3af84f..85f903caf12e1 100644
> --- a/drivers/gpu/drm/radeon/atombios_encoders.c
> +++ b/drivers/gpu/drm/radeon/atombios_encoders.c
> @@ -296,10 +296,6 @@ static void radeon_atom_backlight_exit(struct radeon_encoder *encoder)
>
>  #endif
>
> -/* evil but including atombios.h is much worse */
> -bool radeon_atom_get_tv_timings(struct radeon_device *rdev, int index,
> -                               struct drm_display_mode *mode);
> -
>  static bool radeon_atom_mode_fixup(struct drm_encoder *encoder,
>                                    const struct drm_display_mode *mode,
>                                    struct drm_display_mode *adjusted_mode)
> --
> 2.25.1
>
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