ASoC: rsnd: adg: ignore undefined clock error

undefined clock is not error. Accept such case. And this is prepare
for clock out support in the same time.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/sh/rcar/adg.c b/sound/soc/sh/rcar/adg.c
index 606d416..d4fb11a 100644 (file)
--- a/sound/soc/sh/rcar/adg.c
+++ b/sound/soc/sh/rcar/adg.c
@@ -394,6 +394,28 @@ found_clock:
        return 0;
 }
 
+static void rsnd_adg_get_clkin(struct rsnd_priv *priv,
+                              struct rsnd_adg *adg)
+{
+       struct device *dev = rsnd_priv_to_dev(priv);
+       struct clk *clk;
+       static const char * const clk_name[] = {
+               [CLKA]  = "clk_a",
+               [CLKB]  = "clk_b",
+               [CLKC]  = "clk_c",
+               [CLKI]  = "clk_i",
+       };
+       int i;
+
+       for (i = 0; i < CLKMAX; i++) {
+               clk = devm_clk_get(dev, clk_name[i]);
+               adg->clk[i] = IS_ERR(clk) ? NULL : clk;
+       }
+
+       for_each_rsnd_clk(clk, adg, i)
+               dev_dbg(dev, "clk %d : %p : %ld\n", i, clk, clk_get_rate(clk));
+}
+
 static void rsnd_adg_ssi_clk_init(struct rsnd_priv *priv, struct rsnd_adg *adg)
 {
        struct clk *clk;
@@ -466,8 +488,6 @@ int rsnd_adg_probe(struct platform_device *pdev,
 {
        struct rsnd_adg *adg;
        struct device *dev = rsnd_priv_to_dev(priv);
-       struct clk *clk;
-       int i;
 
        adg = devm_kzalloc(dev, sizeof(*adg), GFP_KERNEL);
        if (!adg) {
@@ -483,13 +503,7 @@ int rsnd_adg_probe(struct platform_device *pdev,
        adg->mod.ops = &adg_ops;
        adg->mod.priv = priv;
 
-       adg->clk[CLKA]  = devm_clk_get(dev, "clk_a");
-       adg->clk[CLKB]  = devm_clk_get(dev, "clk_b");
-       adg->clk[CLKC]  = devm_clk_get(dev, "clk_c");
-       adg->clk[CLKI]  = devm_clk_get(dev, "clk_i");
-
-       for_each_rsnd_clk(clk, adg, i)
-               dev_dbg(dev, "clk %d : %p : %ld\n", i, clk, clk_get_rate(clk));
+       rsnd_adg_get_clkin(priv, adg);
 
        rsnd_adg_ssi_clk_init(priv, adg);