[PATCH v2 3/3] drm/i915/xe3lpd: Update bandwidth parameters

[Gustavo Sousa]

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
Signed-off-by: Gustavo Sousa <gustavo.sousa at intel.com>
---
 drivers/gpu/drm/i915/display/intel_bw.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c
index 51b82979a8e4..32096d3c4b9f 100644
--- a/drivers/gpu/drm/i915/display/intel_bw.c
+++ b/drivers/gpu/drm/i915/display/intel_bw.c
@@ -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 drm_i915_private *dev_priv, const struct intel_sa_info *sa)
 {
 	struct intel_display *display = &dev_priv->display;
@@ -759,7 +766,9 @@ void intel_bw_init_hw(struct drm_i915_private *dev_priv)
 	if (!HAS_DISPLAY(display))
 		return;
 
-	if (DISPLAY_VERx100(display) >= 1401 && display->platform.dgfx)
+	if (DISPLAY_VER(display) >= 30)
+		tgl_get_bw_info(dev_priv, &xe3lpd_sa_info);
+	else if (DISPLAY_VERx100(display) >= 1401 && display->platform.dgfx)
 		xe2_hpd_get_bw_info(dev_priv, &xe2_hpd_sa_info);
 	else if (DISPLAY_VER(display) >= 14)
 		tgl_get_bw_info(dev_priv, &mtl_sa_info);
-- 
2.48.1