thunderbolt: Do not call CLx functions from TMU code

There is really no need to call any of the CLx functions in the TMU code
so remove all these checks. This makes the TMU enable/disable flows
easier to follow as well.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>

drivers/thunderbolt/tmu.c

@@ -383,14 +383,6 @@ int tb_switch_tmu_post_time(struct tb_switch *sw)
  */
 int tb_switch_tmu_disable(struct tb_switch *sw)
 {
-	/*
-	 * No need to disable TMU on devices that don't support CLx since
-	 * on these devices e.g. Alpine Ridge and earlier, the TMU mode
-	 * HiFi bi-directional is enabled by default and we don't change it.
-	 */
-	if (!tb_switch_clx_is_supported(sw))
-		return 0;
-
 	/* Already disabled? */
 	if (sw->tmu.rate == TB_SWITCH_TMU_RATE_OFF)
 		return 0;
@@ -648,25 +640,10 @@ int tb_switch_tmu_enable(struct tb_switch *sw)
 	bool unidirectional = sw->tmu.unidirectional_request;
 	int ret;
 
-	/*
-	 * No need to enable TMU on devices that don't support CLx since on
-	 * these devices e.g. Alpine Ridge and earlier, the TMU mode HiFi
-	 * bi-directional is enabled by default.
-	 */
-	if (!tb_switch_clx_is_supported(sw))
-		return 0;
-
 	if (tb_switch_tmu_is_enabled(sw))
 		return 0;
 
 	if (tb_switch_is_titan_ridge(sw) && unidirectional) {
-		/*
-		 * Titan Ridge supports CL0s and CL1 only. CL0s and CL1 are
-		 * enabled and supported together.
-		 */
-		if (!tb_switch_clx_is_enabled(sw, TB_CL1))
-			return -EOPNOTSUPP;
-
 		ret = tb_switch_tmu_disable_objections(sw);
 		if (ret)
 			return ret;