This is a note to let you know that I've just added the patch titled
ACPI: scan: Create platform device for CS35L56
to the 6.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
acpi-scan-create-platform-device-for-cs35l56.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 1cd0302be5645420f73090aee26fa787287e1096 Mon Sep 17 00:00:00 2001
From: Simon Trimmer <simont@xxxxxxxxxxxxxxxxxxxxx>
Date: Fri, 28 Jul 2023 12:13:45 +0100
Subject: ACPI: scan: Create platform device for CS35L56
From: Simon Trimmer <simont@xxxxxxxxxxxxxxxxxxxxx>
commit 1cd0302be5645420f73090aee26fa787287e1096 upstream.
The ACPI device CSC3556 is a Cirrus Logic CS35L56 mono amplifier which
is used in multiples, and can be connected either to I2C or SPI.
There will be multiple instances under the same Device() node. Add it
to ignore_serial_bus_ids and handle it in the serial-multi-instantiate
driver.
There can be a 5th I2cSerialBusV2, but this is an alias address and doesn't
represent a real device. Ignore this by having a dummy 5th entry in the
serial-multi-instantiate instance list with the name of a non-existent
driver, on the same pattern as done for bsg2150.
Signed-off-by: Simon Trimmer <simont@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Link: https://lore.kernel.org/r/20230728111345.7224-1-rf@xxxxxxxxxxxxxxxxxxxxx
Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/acpi/scan.c | 1 +
drivers/platform/x86/serial-multi-instantiate.c | 14 ++++++++++++++
2 files changed, 15 insertions(+)
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1712,6 +1712,7 @@ static bool acpi_device_enumeration_by_p
{"BSG1160", },
{"BSG2150", },
{"CSC3551", },
+ {"CSC3556", },
{"INT33FE", },
{"INT3515", },
/* Non-conforming _HID for Cirrus Logic already released */
--- a/drivers/platform/x86/serial-multi-instantiate.c
+++ b/drivers/platform/x86/serial-multi-instantiate.c
@@ -329,6 +329,19 @@ static const struct smi_node cs35l41_hda
.bus_type = SMI_AUTO_DETECT,
};
+static const struct smi_node cs35l56_hda = {
+ .instances = {
+ { "cs35l56-hda", IRQ_RESOURCE_AUTO, 0 },
+ { "cs35l56-hda", IRQ_RESOURCE_AUTO, 0 },
+ { "cs35l56-hda", IRQ_RESOURCE_AUTO, 0 },
+ { "cs35l56-hda", IRQ_RESOURCE_AUTO, 0 },
+ /* a 5th entry is an alias address, not a real device */
+ { "cs35l56-hda_dummy_dev" },
+ {}
+ },
+ .bus_type = SMI_AUTO_DETECT,
+};
+
/*
* Note new device-ids must also be added to ignore_serial_bus_ids in
* drivers/acpi/scan.c: acpi_device_enumeration_by_parent().
@@ -337,6 +350,7 @@ static const struct acpi_device_id smi_a
{ "BSG1160", (unsigned long)&bsg1160_data },
{ "BSG2150", (unsigned long)&bsg2150_data },
{ "CSC3551", (unsigned long)&cs35l41_hda },
+ { "CSC3556", (unsigned long)&cs35l56_hda },
{ "INT3515", (unsigned long)&int3515_data },
/* Non-conforming _HID for Cirrus Logic already released */
{ "CLSA0100", (unsigned long)&cs35l41_hda },
Patches currently in stable-queue which might be from simont@xxxxxxxxxxxxxxxxxxxxx are
queue-6.4/acpi-scan-create-platform-device-for-cs35l56.patch
