[Intel-gfx] [PATCH 1/2] drm/i915/ips: Make IPS debugfs per-crtc

[Jani Nikula]

On Mon, 27 Mar 2023, Ville Syrjala <ville.syrjala at linux.intel.com> wrote:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
>
> IPS is a per-pipe feature, so let's move the debugfs stuff
> under the crtc directory, and only register it when IPS
> is actually available.
>
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>

Yay!

Reviewed-by: Jani Nikula <jani.nikula at intel.com>

> ---
>  drivers/gpu/drm/i915/display/hsw_ips.c            | 15 +++++++--------
>  drivers/gpu/drm/i915/display/hsw_ips.h            |  3 +--
>  .../gpu/drm/i915/display/intel_display_debugfs.c  |  2 +-
>  3 files changed, 9 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/hsw_ips.c b/drivers/gpu/drm/i915/display/hsw_ips.c
> index 2910f5d0f3e2..47209c858c32 100644
> --- a/drivers/gpu/drm/i915/display/hsw_ips.c
> +++ b/drivers/gpu/drm/i915/display/hsw_ips.c
> @@ -270,12 +270,10 @@ void hsw_ips_get_config(struct intel_crtc_state *crtc_state)
>  
>  static int hsw_ips_debugfs_status_show(struct seq_file *m, void *unused)
>  {
> -	struct drm_i915_private *i915 = m->private;
> +	struct intel_crtc *crtc = m->private;
> +	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
>  	intel_wakeref_t wakeref;
>  
> -	if (!HAS_IPS(i915))
> -		return -ENODEV;
> -
>  	wakeref = intel_runtime_pm_get(&i915->runtime_pm);
>  
>  	seq_printf(m, "Enabled by kernel parameter: %s\n",
> @@ -297,10 +295,11 @@ static int hsw_ips_debugfs_status_show(struct seq_file *m, void *unused)
>  
>  DEFINE_SHOW_ATTRIBUTE(hsw_ips_debugfs_status);
>  
> -void hsw_ips_debugfs_register(struct drm_i915_private *i915)
> +void hsw_ips_crtc_debugfs_add(struct intel_crtc *crtc)
>  {
> -	struct drm_minor *minor = i915->drm.primary;
> +	if (!hsw_crtc_supports_ips(crtc))
> +		return;
>  
> -	debugfs_create_file("i915_ips_status", 0444, minor->debugfs_root,
> -			    i915, &hsw_ips_debugfs_status_fops);
> +	debugfs_create_file("i915_ips_status", 0444, crtc->base.debugfs_entry,
> +			    crtc, &hsw_ips_debugfs_status_fops);
>  }
> diff --git a/drivers/gpu/drm/i915/display/hsw_ips.h b/drivers/gpu/drm/i915/display/hsw_ips.h
> index 7ed6061874f7..4eb83b350791 100644
> --- a/drivers/gpu/drm/i915/display/hsw_ips.h
> +++ b/drivers/gpu/drm/i915/display/hsw_ips.h
> @@ -8,7 +8,6 @@
>  
>  #include <linux/types.h>
>  
> -struct drm_i915_private;
>  struct intel_atomic_state;
>  struct intel_crtc;
>  struct intel_crtc_state;
> @@ -23,6 +22,6 @@ bool hsw_crtc_state_ips_capable(const struct intel_crtc_state *crtc_state);
>  int hsw_ips_compute_config(struct intel_atomic_state *state,
>  			   struct intel_crtc *crtc);
>  void hsw_ips_get_config(struct intel_crtc_state *crtc_state);
> -void hsw_ips_debugfs_register(struct drm_i915_private *i915);
> +void hsw_ips_crtc_debugfs_add(struct intel_crtc *crtc);
>  
>  #endif /* __HSW_IPS_H__ */
> diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
> index cc5026272558..d5715ccc37f0 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c
> +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
> @@ -1092,7 +1092,6 @@ void intel_display_debugfs_register(struct drm_i915_private *i915)
>  				 ARRAY_SIZE(intel_display_debugfs_list),
>  				 minor->debugfs_root, minor);
>  
> -	hsw_ips_debugfs_register(i915);
>  	intel_dmc_debugfs_register(i915);
>  	intel_fbc_debugfs_register(i915);
>  	intel_hpd_debugfs_register(i915);
> @@ -1461,6 +1460,7 @@ void intel_crtc_debugfs_add(struct intel_crtc *crtc)
>  	crtc_updates_add(crtc);
>  	intel_drrs_crtc_debugfs_add(crtc);
>  	intel_fbc_crtc_debugfs_add(crtc);
> +	hsw_ips_crtc_debugfs_add(crtc);
>  
>  	debugfs_create_file("i915_current_bpc", 0444, root, crtc,
>  			    &i915_current_bpc_fops);

-- 
Jani Nikula, Intel Open Source Graphics Center