On Mon, 08 Dec 2025, Ville Syrjala <[email protected]> wrote:
> From: Ville Syrjälä <[email protected]>
>
> INTEL_GMCH_CTRL and I830_GMCH_CTRL are the same register.
> Get rid of the INTEL_GMCH_CTRL name.
>
> Signed-off-by: Ville Syrjälä <[email protected]>

Reviewed-by: Jani Nikula <[email protected]>

> ---
>  drivers/gpu/drm/i915/display/intel_vga.c | 2 +-
>  include/drm/intel/i915_drm.h             | 5 +++--
>  2 files changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_vga.c 
> b/drivers/gpu/drm/i915/display/intel_vga.c
> index 9e1f3ab632d5..6fc3e3702cb8 100644
> --- a/drivers/gpu/drm/i915/display/intel_vga.c
> +++ b/drivers/gpu/drm/i915/display/intel_vga.c
> @@ -20,7 +20,7 @@
>  
>  static unsigned int intel_gmch_ctrl_reg(struct intel_display *display)
>  {
> -     return DISPLAY_VER(display) >= 6 ? SNB_GMCH_CTRL : INTEL_GMCH_CTRL;
> +     return DISPLAY_VER(display) >= 6 ? SNB_GMCH_CTRL : I830_GMCH_CTRL;
>  }
>  
>  static bool intel_vga_decode_is_enabled(struct intel_display *display)
> diff --git a/include/drm/intel/i915_drm.h b/include/drm/intel/i915_drm.h
> index adff68538484..91f628367f1f 100644
> --- a/include/drm/intel/i915_drm.h
> +++ b/include/drm/intel/i915_drm.h
> @@ -44,8 +44,6 @@ extern struct resource intel_graphics_stolen_res;
>   * This is all handled in the intel-gtt.ko module. i915.ko only
>   * cares about the vga bit for the vga arbiter.
>   */
> -#define INTEL_GMCH_CTRL              0x52
> -#define INTEL_GMCH_VGA_DISABLE  (1 << 1)
>  #define SNB_GMCH_CTRL                0x50
>  #define    SNB_GMCH_GGMS_SHIFT       8 /* GTT Graphics Memory Size */
>  #define    SNB_GMCH_GGMS_MASK        0x3
> @@ -80,6 +78,9 @@ extern struct resource intel_graphics_stolen_res;
>  #define INTEL_GMCH_GMS_STOLEN_224M   (0xc << 4)
>  #define INTEL_GMCH_GMS_STOLEN_352M   (0xd << 4)
>  
> +/* valid for both I830_GMCH_CTRL and SNB_GMCH_CTRL */
> +#define   INTEL_GMCH_VGA_DISABLE  (1 << 1)
> +
>  #define I830_DRB3            0x63
>  #define I85X_DRB3            0x43
>  #define I865_TOUD            0xc4

-- 
Jani Nikula, Intel

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