clk: sunxi-ng: Pass the parent and a pointer to the clocks round rate

The clocks might need to modify their parent clocks. In order to make that
possible, give them access to the parent clock being evaluated, and to a
pointer to the parent rate so that they can modify it if needed.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>

drivers/clk/sunxi-ng/ccu_div.c

@@ -14,7 +14,8 @@
 #include "ccu_div.h"
 
 static unsigned long ccu_div_round_rate(struct ccu_mux_internal *mux,
-					unsigned long parent_rate,
+					struct clk_hw *parent,
+					unsigned long *parent_rate,
 					unsigned long rate,
 					void *data)
 {
@@ -26,10 +27,10 @@ static unsigned long ccu_div_round_rate(struct ccu_mux_internal *mux,
 	 * several parents, while we might be called to evaluate
 	 * several different parents.
 	 */
-	val = divider_get_val(rate, parent_rate, cd->div.table, cd->div.width,
+	val = divider_get_val(rate, *parent_rate, cd->div.table, cd->div.width,
 			      cd->div.flags);
 
-	return divider_recalc_rate(&cd->common.hw, parent_rate, val,
+	return divider_recalc_rate(&cd->common.hw, *parent_rate, val,
 				   cd->div.table, cd->div.flags);
 }
 

drivers/clk/sunxi-ng/ccu_mp.c

@@ -41,7 +41,8 @@ static void ccu_mp_find_best(unsigned long parent, unsigned long rate,
 }
 
 static unsigned long ccu_mp_round_rate(struct ccu_mux_internal *mux,
-				       unsigned long parent_rate,
+				       struct clk_hw *hw,
+				       unsigned long *parent_rate,
 				       unsigned long rate,
 				       void *data)
 {
@@ -52,9 +53,9 @@ static unsigned long ccu_mp_round_rate(struct ccu_mux_internal *mux,
 	max_m = cmp->m.max ?: 1 << cmp->m.width;
 	max_p = cmp->p.max ?: 1 << ((1 << cmp->p.width) - 1);
 
-	ccu_mp_find_best(parent_rate, rate, max_m, max_p, &m, &p);
+	ccu_mp_find_best(*parent_rate, rate, max_m, max_p, &m, &p);
 
-	return parent_rate / p / m;
+	return *parent_rate / p / m;
 }
 
 static void ccu_mp_disable(struct clk_hw *hw)

drivers/clk/sunxi-ng/ccu_mult.c

@@ -33,9 +33,10 @@ static void ccu_mult_find_best(unsigned long parent, unsigned long rate,
 }
 
 static unsigned long ccu_mult_round_rate(struct ccu_mux_internal *mux,
-					unsigned long parent_rate,
-					unsigned long rate,
-					void *data)
+					 struct clk_hw *parent,
+					 unsigned long *parent_rate,
+					 unsigned long rate,
+					 void *data)
 {
 	struct ccu_mult *cm = data;
 	struct _ccu_mult _cm;
@@ -47,9 +48,9 @@ static unsigned long ccu_mult_round_rate(struct ccu_mux_internal *mux,
 	else
 		_cm.max = (1 << cm->mult.width) + cm->mult.offset - 1;
 
-	ccu_mult_find_best(parent_rate, rate, &_cm);
+	ccu_mult_find_best(*parent_rate, rate, &_cm);
 
-	return parent_rate * _cm.mult;
+	return *parent_rate * _cm.mult;
 }
 
 static void ccu_mult_disable(struct clk_hw *hw)

drivers/clk/sunxi-ng/ccu_mux.c

@@ -61,7 +61,8 @@ int ccu_mux_helper_determine_rate(struct ccu_common *common,
 				  struct ccu_mux_internal *cm,
 				  struct clk_rate_request *req,
 				  unsigned long (*round)(struct ccu_mux_internal *,
-							 unsigned long,
+							 struct clk_hw *,
+							 unsigned long *,
 							 unsigned long,
 							 void *),
 				  void *data)
@@ -80,7 +81,8 @@ int ccu_mux_helper_determine_rate(struct ccu_common *common,
 		ccu_mux_helper_adjust_parent_for_prediv(common, cm, -1,
 							&adj_parent_rate);
 
-		best_rate = round(cm, adj_parent_rate, req->rate, data);
+		best_rate = round(cm, best_parent, &adj_parent_rate,
+				  req->rate, data);
 
 		goto out;
 	}
@@ -109,7 +111,7 @@ int ccu_mux_helper_determine_rate(struct ccu_common *common,
 		ccu_mux_helper_adjust_parent_for_prediv(common, cm, i,
 							&adj_parent_rate);
 
-		tmp_rate = round(cm, adj_parent_rate, req->rate, data);
+		tmp_rate = round(cm, parent, &adj_parent_rate, req->rate, data);
 		if (tmp_rate == req->rate) {
 			best_parent = parent;
 			best_parent_rate = parent_rate;

drivers/clk/sunxi-ng/ccu_mux.h

@@ -86,7 +86,8 @@ int ccu_mux_helper_determine_rate(struct ccu_common *common,
 				  struct ccu_mux_internal *cm,
 				  struct clk_rate_request *req,
 				  unsigned long (*round)(struct ccu_mux_internal *,
-							 unsigned long,
+							 struct clk_hw *,
+							 unsigned long *,
 							 unsigned long,
 							 void *),
 				  void *data);

drivers/clk/sunxi-ng/ccu_nkm.c

@@ -102,7 +102,8 @@ static unsigned long ccu_nkm_recalc_rate(struct clk_hw *hw,
 }
 
 static unsigned long ccu_nkm_round_rate(struct ccu_mux_internal *mux,
-					unsigned long parent_rate,
+					struct clk_hw *hw,
+					unsigned long *parent_rate,
 					unsigned long rate,
 					void *data)
 {
@@ -116,9 +117,9 @@ static unsigned long ccu_nkm_round_rate(struct ccu_mux_internal *mux,
 	_nkm.min_m = 1;
 	_nkm.max_m = nkm->m.max ?: 1 << nkm->m.width;
 
-	ccu_nkm_find_best(parent_rate, rate, &_nkm);
+	ccu_nkm_find_best(*parent_rate, rate, &_nkm);
 
-	return parent_rate * _nkm.n * _nkm.k / _nkm.m;
+	return *parent_rate * _nkm.n * _nkm.k / _nkm.m;
 }
 
 static int ccu_nkm_determine_rate(struct clk_hw *hw,