linux-kernel - [PATCH v5 08/10] ACPI / scan: Create platform device for CLSA0100 and CSC3551 ACPI nodes

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Date:   Thu, 16 Dec 2021 11:43:30 +0000
From:   Lucas Tanure <tanureal@...nsource.cirrus.com>
To:     "Rafael J . Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Mark Brown <broonie@...nel.org>, Takashi Iwai <tiwai@...e.com>
CC:     <alsa-devel@...a-project.org>, <linux-acpi@...r.kernel.org>,
        <patches@...nsource.cirrus.com>,
        <platform-driver-x86@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Lucas Tanure <tanureal@...nsource.cirrus.com>
Subject: [PATCH v5 08/10] ACPI / scan: Create platform device for CLSA0100 and CSC3551 ACPI nodes

The ACPI device with CLSA0100 or CSC3551 is a sound card
with multiple instances of CS35L41 connectec by I2C to
the main CPU.

We add an ID to the i2c_multi_instantiate_ids list to enumerate
all I2C slaves correctly.

Signed-off-by: Lucas Tanure <tanureal@...nsource.cirrus.com>
---
 drivers/acpi/scan.c                          |  3 +++
 drivers/platform/x86/i2c-multi-instantiate.c | 11 +++++++++++
 2 files changed, 14 insertions(+)

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 5991dddbc9ce..333ae8914cf5 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1706,8 +1706,11 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device)
 	static const struct acpi_device_id i2c_multi_instantiate_ids[] = {
 		{"BSG1160", },
 		{"BSG2150", },
+		{"CSC3551", },
 		{"INT33FE", },
 		{"INT3515", },
+		/* Non-conforming _HID for Cirrus Logic already released */
+		{"CLSA0100", },
 		{}
 	};
 
diff --git a/drivers/platform/x86/i2c-multi-instantiate.c b/drivers/platform/x86/i2c-multi-instantiate.c
index 4956a1df5b90..a889789b966c 100644
--- a/drivers/platform/x86/i2c-multi-instantiate.c
+++ b/drivers/platform/x86/i2c-multi-instantiate.c
@@ -147,6 +147,14 @@ static const struct i2c_inst_data int3515_data[]  = {
 	{}
 };
 
+static const struct i2c_inst_data cs35l41_hda[] = {
+	{ "cs35l41-hda", IRQ_RESOURCE_GPIO, 0 },
+	{ "cs35l41-hda", IRQ_RESOURCE_GPIO, 0 },
+	{ "cs35l41-hda", IRQ_RESOURCE_GPIO, 0 },
+	{ "cs35l41-hda", IRQ_RESOURCE_GPIO, 0 },
+	{}
+};
+
 /*
  * Note new device-ids must also be added to i2c_multi_instantiate_ids in
  * drivers/acpi/scan.c: acpi_device_enumeration_by_parent().
@@ -154,7 +162,10 @@ static const struct i2c_inst_data int3515_data[]  = {
 static const struct acpi_device_id i2c_multi_inst_acpi_ids[] = {
 	{ "BSG1160", (unsigned long)bsg1160_data },
 	{ "BSG2150", (unsigned long)bsg2150_data },
+	{ "CSC3551", (unsigned long)cs35l41_hda },
 	{ "INT3515", (unsigned long)int3515_data },
+	/* Non-conforming _HID for Cirrus Logic already released */
+	{ "CLSA0100", (unsigned long)cs35l41_hda },
 	{ }
 };
 MODULE_DEVICE_TABLE(acpi, i2c_multi_inst_acpi_ids);
-- 
2.34.1