linux-kernel - [PATCH v4 9/9] ACPI / scan: Create platform device for CS35L41

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Date:   Thu, 20 Jan 2022 13:43:26 +0000
From:   Stefan Binding <sbinding@...nsource.cirrus.com>
To:     Mark Brown <broonie@...nel.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
CC:     <alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>,
        <linux-spi@...r.kernel.org>, <linux-acpi@...r.kernel.org>,
        <platform-driver-x86@...r.kernel.org>,
        <patches@...nsource.cirrus.com>,
        Lucas Tanure <tanureal@...nsource.cirrus.com>,
        Stefan Binding <sbinding@...nsource.cirrus.com>
Subject: [PATCH v4 9/9] ACPI / scan: Create platform device for CS35L41

From: Lucas Tanure <tanureal@...nsource.cirrus.com>

The ACPI device with CSC3551 or CLSA0100 are sound cards
with multiple instances of CS35L41 connectec by I2C or SPI
to the main CPU.

We add an ID to the ignore_serial_bus_ids list to enumerate
all I2C or SPI devices correctly.

Signed-off-by: Lucas Tanure <tanureal@...nsource.cirrus.com>
Signed-off-by: Stefan Binding <sbinding@...nsource.cirrus.com>
---
 drivers/acpi/scan.c                          |  3 +++
 drivers/platform/x86/bus-multi-instantiate.c | 14 ++++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 4fd1346d6e1f..2f2210c969c8 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1744,8 +1744,11 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device)
 	 */
 		{"BSG1160", },
 		{"BSG2150", },
+		{"CSC3551", },
 		{"INT33FE", },
 		{"INT3515", },
+	/* Non-conforming _HID for Cirrus Logic already released */
+		{"CLSA0100", },
 	/*
 	 * HIDs of device with an UartSerialBusV2 resource for which userspace
 	 * expects a regular tty cdev to be created (instead of the in kernel
diff --git a/drivers/platform/x86/bus-multi-instantiate.c b/drivers/platform/x86/bus-multi-instantiate.c
index 05bc941a38fd..7a394b671f5a 100644
--- a/drivers/platform/x86/bus-multi-instantiate.c
+++ b/drivers/platform/x86/bus-multi-instantiate.c
@@ -328,6 +328,17 @@ static const struct bmi_node int3515_data = {
 	.bus_type = BMI_I2C,
 };
 
+static const struct bmi_node cs35l41_hda = {
+	.instances = {
+		{ "cs35l41-hda", IRQ_RESOURCE_GPIO, 0 },
+		{ "cs35l41-hda", IRQ_RESOURCE_GPIO, 0 },
+		{ "cs35l41-hda", IRQ_RESOURCE_GPIO, 0 },
+		{ "cs35l41-hda", IRQ_RESOURCE_GPIO, 0 },
+		{}
+	},
+	.bus_type = BMI_AUTO_DETECT,
+};
+
 /*
  * Note new device-ids must also be added to bus_multi_instantiate_ids in
  * drivers/acpi/scan.c: acpi_device_enumeration_by_parent().
@@ -336,6 +347,9 @@ static const struct acpi_device_id bmi_acpi_ids[] = {
 	{ "BSG1160", (unsigned long)&bsg1160_data },
 	{ "BSG2150", (unsigned long)&bsg2150_data },
 	{ "INT3515", (unsigned long)&int3515_data },
+	{ "CSC3551", (unsigned long)&cs35l41_hda },
+	/* Non-conforming _HID for Cirrus Logic already released */
+	{ "CLSA0100", (unsigned long)&cs35l41_hda },
 	{ }
 };
 MODULE_DEVICE_TABLE(acpi, bmi_acpi_ids);
-- 
2.25.1