clk: renesas: rzg2l: Add macro to loop through module clocks

Add a macro to iterate over the module clocks array. This will be useful
in the upcoming commits that move MSTOP support into the clock
enable/disable APIs.

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://lore.kernel.org/20250527112403.1254122-4-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index 767da288b0f7b00cd7b199cfc3141c65510e9af1..e5ad80f35cfde163dbb604c98d591a619ea76c85 100644 (file)
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -1202,6 +1202,13 @@ struct mstp_clock {
 
 #define to_mod_clock(_hw) container_of(_hw, struct mstp_clock, hw)
 
+#define for_each_mod_clock(mod_clock, hw, priv) \
+       for (unsigned int i = 0; (priv) && i < (priv)->num_mod_clks; i++) \
+               if ((priv)->clks[(priv)->num_core_clks + i] == ERR_PTR(-ENOENT)) \
+                       continue; \
+               else if (((hw) = __clk_get_hw((priv)->clks[(priv)->num_core_clks + i])) && \
+                        ((mod_clock) = to_mod_clock(hw)))
+
 static int rzg2l_mod_clock_endisable(struct clk_hw *hw, bool enable)
 {
        struct mstp_clock *clock = to_mod_clock(hw);
@@ -1314,17 +1321,10 @@ static struct mstp_clock
 *rzg2l_mod_clock_get_sibling(struct mstp_clock *clock,
                             struct rzg2l_cpg_priv *priv)
 {
+       struct mstp_clock *clk;
        struct clk_hw *hw;
-       unsigned int i;
-
-       for (i = 0; i < priv->num_mod_clks; i++) {
-               struct mstp_clock *clk;
-
-               if (priv->clks[priv->num_core_clks + i] == ERR_PTR(-ENOENT))
-                       continue;
 
-               hw = __clk_get_hw(priv->clks[priv->num_core_clks + i]);
-               clk = to_mod_clock(hw);
+       for_each_mod_clock(clk, hw, priv) {
                if (clock->off == clk->off && clock->bit == clk->bit)
                        return clk;
        }