[Intel-xe] [PATCH 1/2] drm/xe: Add module parameter 'fastboot'

[Shankar, Uma]

> -----Original Message-----
> From: Intel-xe <intel-xe-bounces at lists.freedesktop.org> On Behalf Of Arun R
> Murthy
> Sent: Sunday, September 24, 2023 8:18 PM
> To: intel-xe at lists.freedesktop.org
> Cc: Murthy, Arun R <arun.r.murthy at intel.com>
> Subject: [Intel-xe] [PATCH 1/2] drm/xe: Add module parameter 'fastboot'
> 
> Fastboot is by default enabled on all Display 9+ platforms.
> Module param is added in xe for controlling the same.

On Xe, we don't have the module param yet. So, there is no
way to change the default what we set here in this patch as of
now. We should modify the statement here.

It should be ok to get rid of the #define and have fastboot disabled
by default for now. But we should work on the task to get the
module param or any other mechanism acceptable by maintainers
to control fastboot feature.

Regards,
Uma Shankar

> Signed-off-by: Arun R Murthy <arun.r.murthy at intel.com>
> ---
>  drivers/gpu/drm/xe/xe_device_types.h | 1 +
>  drivers/gpu/drm/xe/xe_display.c      | 1 +
>  2 files changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/xe/xe_device_types.h
> b/drivers/gpu/drm/xe/xe_device_types.h
> index a82f28c6a3a0..f73c0672bd54 100644
> --- a/drivers/gpu/drm/xe/xe_device_types.h
> +++ b/drivers/gpu/drm/xe/xe_device_types.h
> @@ -458,6 +458,7 @@ struct xe_device {
>  		s32 panel_use_ssc;
>  		const char *vbt_firmware;
>  		u32 lvds_channel_mode;
> +		int fastboot;
>  	} params;
>  #endif
>  };
> diff --git a/drivers/gpu/drm/xe/xe_display.c b/drivers/gpu/drm/xe/xe_display.c
> index bb4938a84f47..8a80d85eb104 100644
> --- a/drivers/gpu/drm/xe/xe_display.c
> +++ b/drivers/gpu/drm/xe/xe_display.c
> @@ -123,6 +123,7 @@ int xe_display_create(struct xe_device *xe)
>  	xe->params.enable_psr2_sel_fetch = -1;
>  	xe->params.enable_sagv = true;
>  	xe->params.panel_use_ssc = -1;
> +	xe->params.fastboot = -1;
> 
>  	err = drmm_add_action_or_reset(&xe->drm, display_destroy, NULL);
>  	if (err)
> --
> 2.25.1