linux-kernel - [PATCH v5 9/9] ACPI / scan: Create platform device for CS35L41

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Date:   Fri, 21 Jan 2022 14:32:54 +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 v5 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/serial-multi-instantiate.c | 14 ++++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 38c4f55960f4..b59e4c994878 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/serial-multi-instantiate.c b/drivers/platform/x86/serial-multi-instantiate.c
index 535c80789852..cef201065fdb 100644
--- a/drivers/platform/x86/serial-multi-instantiate.c
+++ b/drivers/platform/x86/serial-multi-instantiate.c
@@ -305,6 +305,17 @@ static const struct smi_node int3515_data = {
 	.bus_type = SMI_I2C,
 };
 
+static const struct smi_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 = SMI_AUTO_DETECT,
+};
+
 /*
  * Note new device-ids must also be added to serial_multi_instantiate_ids in
  * drivers/acpi/scan.c: acpi_device_enumeration_by_parent().
@@ -313,6 +324,9 @@ static const struct acpi_device_id smi_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, smi_acpi_ids);
-- 
2.25.1