Commit 4051c59e authored by Gustavo Sousa's avatar Gustavo Sousa
Browse files

drm/i915/xe3lpd: Update bandwidth parameters 



Bandwidth parameters for Xe3_LPD have been updated with respect to
previous display releases. Encode them into xe3lpd_sa_info and use that
new struct.

Bspec: 68859
Reviewed-by: default avatarMatt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250311-xe3lpd-bandwidth-update-v5-3-a95a9d90ad71@intel.com


Signed-off-by: default avatarGustavo Sousa <gustavo.sousa@intel.com>
parent d706998b

drivers/gpu/drm/i915/display/intel_bw.c

+10 −1
Original line number Diff line number Diff line
@@ -404,6 +404,13 @@ static const struct intel_sa_info xe2_hpd_sa_info = { 
	/* Other values not used by simplified algorithm */

};



static const struct intel_sa_info xe3lpd_sa_info = {

	.deburst = 32,

	.deprogbwlimit = 65, /* GB/s */

	.displayrtids = 256,

	.derating = 10,

};



static int icl_get_bw_info(struct intel_display *display, const struct intel_sa_info *sa)

{

	struct drm_i915_private *i915 = to_i915(display->drm);
@@ -752,7 +759,9 @@ void intel_bw_init_hw(struct intel_display *display) 
	if (!HAS_DISPLAY(display))

		return;



	if (DISPLAY_VERx100(display) >= 1401 && display->platform.dgfx)

	if (DISPLAY_VER(display) >= 30)

		tgl_get_bw_info(display, &xe3lpd_sa_info);

	else if (DISPLAY_VERx100(display) >= 1401 && display->platform.dgfx)

		xe2_hpd_get_bw_info(display, &xe2_hpd_sa_info);

	else if (DISPLAY_VER(display) >= 14)

		tgl_get_bw_info(display, &mtl_sa_info);