disp: msm: sde: remove dspp blocking

RM blocks an lm path with dspp from being allocated if a dspp is
not required by topology. This can restrict using all lms to full
availability. LM preference already ensures dspp
assignment is completed to required built in displays.
This change removes blocking conditions.

Change-Id: Ifec6f27d4d10a9ea061780ed5f9e9601b893d5a0
Signed-off-by: Nilaan Gunabalachandran <[email protected]>

msm/sde/sde_rm.c

@@ -754,7 +754,7 @@ static bool _sde_rm_check_lm(
 		struct sde_rm_hw_blk **ds,
 		struct sde_rm_hw_blk **pp)
 {
-	bool is_valid_dspp, is_valid_ds, ret;
+	bool is_valid_dspp, is_valid_ds, ret = true;
 
 	is_valid_dspp = (lm_cfg->dspp != DSPP_MAX) ? true : false;
 	is_valid_ds = (lm_cfg->ds != DS_MAX) ? true : false;
@@ -771,8 +771,6 @@ static bool _sde_rm_check_lm(
 		ret = is_valid_dspp;
 	else if (RM_RQ_DS(reqs))
 		ret = is_valid_ds;
-	else
-		ret = !(is_valid_dspp || is_valid_ds);
 
 	if (!ret) {
 		SDE_DEBUG(
@@ -1496,17 +1494,12 @@ static int _sde_rm_make_lm_rsvp(struct sde_rm *rm, struct sde_rm_rsvp *rsvp,
 		if (splash_display->lm_cnt != reqs->topology->num_lm)
 			SDE_DEBUG("Configured splash LMs != needed LM cnt\n");
 	}
+
 	/*
-	 * Assign LMs and blocks whose usage is tied to them: DSPP & Pingpong.
-	 * Do assignment preferring to give away low-resource mixers first:
-	 * - Check mixers without DSPPs
-	 * - Only then allow to grab from mixers with DSPP capability
+	 * Assign LMs and blocks whose usage is tied to them:
+	 * DSPP & Pingpong.
 	 */
 	ret = _sde_rm_reserve_lms(rm, rsvp, reqs, hw_ids);
-	if (ret && !RM_RQ_DSPP(reqs)) {
-		reqs->top_ctrl |= BIT(SDE_RM_TOPCTL_DSPP);
-		ret = _sde_rm_reserve_lms(rm, rsvp, reqs, hw_ids);
-	}
 
 	return ret;
 }