linux-kernel - [PATCH 1/3] ASoC: simple-card-utils: Fix device module clock

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Date:   Wed, 10 Feb 2021 12:13:39 +0530
From:   Sameer Pujar <spujar@...dia.com>
To:     <broonie@...nel.org>, <robh@...nel.org>, <thierry.reding@...il.com>
CC:     <jonathanh@...dia.com>, <kuninori.morimoto.gx@...esas.com>,
        <alsa-devel@...a-project.org>, <devicetree@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <sharadg@...dia.com>, Sameer Pujar <spujar@...dia.com>
Subject: [PATCH 1/3] ASoC: simple-card-utils: Fix device module clock

If "clocks = <&xxx>" is specified from the CPU or Codec component
device node, the clock is not getting enabled. Thus audio playback
or capture fails.

Fix this by populating "simple_dai->clk" field when clocks property
is specified from device node as well. Also tidy up by re-organising
conditional statements of parsing logic.

Fixes: bb6fc620c2ed ("ASoC: simple-card-utils: add asoc_simple_card_parse_clk()")
Cc: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
Signed-off-by: Sameer Pujar <spujar@...dia.com>
---
 sound/soc/generic/simple-card-utils.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c
index bc0b62e..0754d70 100644
--- a/sound/soc/generic/simple-card-utils.c
+++ b/sound/soc/generic/simple-card-utils.c
@@ -173,16 +173,15 @@ int asoc_simple_parse_clk(struct device *dev,
 	 *  or device's module clock.
 	 */
 	clk = devm_get_clk_from_child(dev, node, NULL);
-	if (!IS_ERR(clk)) {
-		simple_dai->sysclk = clk_get_rate(clk);
+	if (IS_ERR(clk))
+		clk = devm_get_clk_from_child(dev, dlc->of_node, NULL);
 
+	if (!IS_ERR(clk)) {
 		simple_dai->clk = clk;
-	} else if (!of_property_read_u32(node, "system-clock-frequency", &val)) {
+		simple_dai->sysclk = clk_get_rate(clk);
+	} else if (!of_property_read_u32(node, "system-clock-frequency",
+					 &val)) {
 		simple_dai->sysclk = val;
-	} else {
-		clk = devm_get_clk_from_child(dev, dlc->of_node, NULL);
-		if (!IS_ERR(clk))
-			simple_dai->sysclk = clk_get_rate(clk);
 	}
 
 	if (of_property_read_bool(node, "system-clock-direction-out"))
-- 
2.7.4