linux-kernel - [PATCH 3/3] ASoC: rt5682: Use clk

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Date:   Mon,  3 Aug 2020 17:05:31 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Mark Brown <broonie@...nel.org>,
        Oder Chiou <oder_chiou@...ltek.com>
Cc:     linux-kernel@...r.kernel.org, alsa-devel@...a-project.org,
        Takashi Iwai <tiwai@...e.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Cheng-Yi Chiang <cychiang@...omium.org>,
        Shuming Fan <shumingf@...ltek.com>
Subject: [PATCH 3/3] ASoC: rt5682: Use clk_hw based APIs for registration

The (new?) style of clk registration uses clk_hw based APIs so that we
can more easily see the difference between clk providers and clk
consumers. Use the clk_hw based APIs to do this and migrate to devm for
the clkdev creation so that we can reduce the amount of code.

Cc: Cheng-Yi Chiang <cychiang@...omium.org>
Cc: Shuming Fan <shumingf@...ltek.com>
Signed-off-by: Stephen Boyd <swboyd@...omium.org>
---
 sound/soc/codecs/rt5682.c | 47 +++++++++------------------------------
 sound/soc/codecs/rt5682.h |  2 --
 2 files changed, 11 insertions(+), 38 deletions(-)

diff --git a/sound/soc/codecs/rt5682.c b/sound/soc/codecs/rt5682.c
index d8a1973a4624..bfb26fec7137 100644
--- a/sound/soc/codecs/rt5682.c
+++ b/sound/soc/codecs/rt5682.c
@@ -2755,8 +2755,6 @@ static int rt5682_register_dai_clks(struct snd_soc_component *component)
 	struct device *dev = component->dev;
 	struct rt5682_priv *rt5682 = snd_soc_component_get_drvdata(component);
 	struct rt5682_platform_data *pdata = &rt5682->pdata;
-	struct clk *dai_clk;
-	struct clk_lookup *dai_clk_lookup;
 	struct clk_hw *dai_clk_hw;
 	int i, ret;
 
@@ -2784,8 +2782,7 @@ static int rt5682_register_dai_clks(struct snd_soc_component *component)
 			break;
 		default:
 			dev_err(dev, "Invalid clock index\n");
-			ret = -EINVAL;
-			goto err;
+			return -EINVAL;
 		}
 
 		init.name = pdata->dai_clk_names[i];
@@ -2793,39 +2790,26 @@ static int rt5682_register_dai_clks(struct snd_soc_component *component)
 		init.flags = CLK_GET_RATE_NOCACHE | CLK_SET_RATE_GATE;
 		dai_clk_hw->init = &init;
 
-		dai_clk = devm_clk_register(dev, dai_clk_hw);
-		if (IS_ERR(dai_clk)) {
-			dev_warn(dev, "Failed to register %s: %ld\n",
-				 init.name, PTR_ERR(dai_clk));
-			ret = PTR_ERR(dai_clk);
-			goto err;
+		ret = devm_clk_hw_register(dev, dai_clk_hw);
+		if (ret) {
+			dev_warn(dev, "Failed to register %s: %d\n",
+				 init.name, ret);
+			return ret;
 		}
-		rt5682->dai_clks[i] = dai_clk;
 
 		if (dev->of_node) {
 			devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get,
 						    dai_clk_hw);
 		} else {
-			dai_clk_lookup = clkdev_create(dai_clk, init.name,
-						       "%s", dev_name(dev));
-			if (!dai_clk_lookup) {
-				ret = -ENOMEM;
-				goto err;
-			} else {
-				rt5682->dai_clks_lookup[i] = dai_clk_lookup;
-			}
+			ret = devm_clk_hw_register_clkdev(dev, dai_clk_hw,
+							  init.name,
+							  dev_name(dev));
+			if (ret)
+				return ret;
 		}
 	}
 
 	return 0;
-
-err:
-	do {
-		if (rt5682->dai_clks_lookup[i])
-			clkdev_drop(rt5682->dai_clks_lookup[i]);
-	} while (i-- > 0);
-
-	return ret;
 }
 #endif /* CONFIG_COMMON_CLK */
 
@@ -2882,15 +2866,6 @@ static void rt5682_remove(struct snd_soc_component *component)
 {
 	struct rt5682_priv *rt5682 = snd_soc_component_get_drvdata(component);
 
-#ifdef CONFIG_COMMON_CLK
-	int i;
-
-	for (i = RT5682_DAI_NUM_CLKS - 1; i >= 0; --i) {
-		if (rt5682->dai_clks_lookup[i])
-			clkdev_drop(rt5682->dai_clks_lookup[i]);
-	}
-#endif
-
 	rt5682_reset(rt5682);
 }
 
diff --git a/sound/soc/codecs/rt5682.h b/sound/soc/codecs/rt5682.h
index 6d94327beae5..354acd735ef4 100644
--- a/sound/soc/codecs/rt5682.h
+++ b/sound/soc/codecs/rt5682.h
@@ -1411,8 +1411,6 @@ struct rt5682_priv {
 
 #ifdef CONFIG_COMMON_CLK
 	struct clk_hw dai_clks_hw[RT5682_DAI_NUM_CLKS];
-	struct clk_lookup *dai_clks_lookup[RT5682_DAI_NUM_CLKS];
-	struct clk *dai_clks[RT5682_DAI_NUM_CLKS];
 	struct clk *mclk;
 #endif
 
-- 
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