linux-kernel - [PATCH v1] ALSA: hda: cs35l41: Clarify support for CSC3551 without

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Message-ID: <20220815152844.462229-1-sbinding@opensource.cirrus.com>
Date:   Mon, 15 Aug 2022 16:28:44 +0100
From:   Stefan Binding <sbinding@...nsource.cirrus.com>
To:     Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
CC:     <alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>,
        <patches@...nsource.cirrus.com>,
        Stefan Binding <sbinding@...nsource.cirrus.com>
Subject: [PATCH v1] ALSA: hda: cs35l41: Clarify support for CSC3551 without _DSD Properties

For devices which use HID CSC3551, correct ACPI _DSD properties are
required to be able support those systems.
Add error message to clarify this.

Signed-off-by: Stefan Binding <sbinding@...nsource.cirrus.com>
---
 sound/pci/hda/cs35l41_hda.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sound/pci/hda/cs35l41_hda.c b/sound/pci/hda/cs35l41_hda.c
index 129bffb431c2..b9d94f3a5b99 100644
--- a/sound/pci/hda/cs35l41_hda.c
+++ b/sound/pci/hda/cs35l41_hda.c
@@ -1163,6 +1163,11 @@ static int cs35l41_no_acpi_dsd(struct cs35l41_hda *cs35l41, struct device *physd
 		hw_cfg->gpio1.func = CS35l41_VSPK_SWITCH;
 		hw_cfg->gpio1.valid = true;
 	} else {
+		/*
+		 * Note: CLSA010(0/1) are special cases which use a slightly different design.
+		 * All other HIDs e.g. CSC3551 require valid ACPI _DSD properties to be supported.
+		 */
+		dev_err(cs35l41->dev, "Error: ACPI _DSD Properties are missing for HID %s.", hid);
 		hw_cfg->valid = false;
 		hw_cfg->gpio1.valid = false;
 		hw_cfg->gpio2.valid = false;
-- 
2.34.1