Re: [PATCH] drm/i915/display: Print display info inside driver display initialization

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On Thu, 21 Sep 2023, Balasubramani Vivekanandan <balasubramani.vivekanandan@xxxxxxxxx> wrote:
> Separate the printing of display version and feature flags from the main
> driver probe to inside the display initialization. This is in alignment
> with isolating the display code from the main driver and helps Xe driver
> to resuse it.
>
> Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@xxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/display/intel_display_driver.c | 5 +++++
>  drivers/gpu/drm/i915/i915_driver.c                  | 2 --
>  2 files changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display_driver.c b/drivers/gpu/drm/i915/display/intel_display_driver.c
> index 9d9b034b9bdc..2fbb3c956336 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_driver.c
> +++ b/drivers/gpu/drm/i915/display/intel_display_driver.c
> @@ -380,6 +380,8 @@ int intel_display_driver_probe(struct drm_i915_private *i915)
>  
>  void intel_display_driver_register(struct drm_i915_private *i915)
>  {
> +	struct drm_printer p = drm_info_printer(i915->drm.dev);

It needs to be a debug printer, not info printer, maybe:

	struct drm_printer p = drm_debug_printer("display info:");

Unfortunately, it's not device specific, but that's for another set of
patches another day.

BR,
Jani.

> +
>  	if (!HAS_DISPLAY(i915))
>  		return;
>  
> @@ -407,6 +409,9 @@ void intel_display_driver_register(struct drm_i915_private *i915)
>  	 * fbdev->async_cookie.
>  	 */
>  	drm_kms_helper_poll_init(&i915->drm);
> +
> +	intel_display_device_info_print(DISPLAY_INFO(i915),
> +					DISPLAY_RUNTIME_INFO(i915), &p);
>  }
>  
>  /* part #1: call before irq uninstall */
> diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c
> index e5d693904123..d50347e5773a 100644
> --- a/drivers/gpu/drm/i915/i915_driver.c
> +++ b/drivers/gpu/drm/i915/i915_driver.c
> @@ -699,8 +699,6 @@ static void i915_welcome_messages(struct drm_i915_private *dev_priv)
>  
>  		intel_device_info_print(INTEL_INFO(dev_priv),
>  					RUNTIME_INFO(dev_priv), &p);
> -		intel_display_device_info_print(DISPLAY_INFO(dev_priv),
> -						DISPLAY_RUNTIME_INFO(dev_priv), &p);
>  		i915_print_iommu_status(dev_priv, &p);
>  		for_each_gt(gt, dev_priv, i)
>  			intel_gt_info_print(&gt->info, &p);

-- 
Jani Nikula, Intel



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