linux-kernel - [PATCH 0/2] iio: imu: lsm6dsx: Support SMOCF05 ACPI ID

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Message-ID: <20251223025351.3099978-2-samuel@dionne-riel.com>
Date: Mon, 22 Dec 2025 21:53:49 -0500
From: Samuel Dionne-Riel <samuel@...nne-riel.com>
To: Lorenzo Bianconi <lorenzo@...nel.org>,
	Jonathan Cameron <jic23@...nel.org>,
	David Lechner <dlechner@...libre.com>,
	Nuno Sá <nuno.sa@...log.com>,
	Andy Shevchenko <andy@...nel.org>
Cc: Samuel Dionne-Riel <samuel@...nne-riel.com>,
	linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] iio: imu: lsm6dsx: Support SMOCF05 ACPI ID


This patch set adds the alternative identifiers for the LSM6DS3TR-C,
just like the windows driver allows.

I have done due diligence, and verified the assertion that the SMOCF05
is also the LSM6DS3TR-C. This was verified by looking closely at the
Windows driver, which also uses the LSM6DS3TR-C device identifier with
that ACPI hardware identifier.

>From looking real close at the Windows driver, I am intuiting that this
different identifier is used to change how the driver behaves, but does
not materially change how the I2C device can work. Though I'm not 100%
sure of this assertion, I believe it does not matter at all for the
Linux driver.

This SMOCF05 configuration was tested on the Minisforum V3 SE.

For completion's sake, the device's DSDT data follows.

    Scope (_SB.I2CD)
    {
        Device (STS)
        {
            Name (_HID, EisaId ("SMOCF05"))  // _HID: Hardware ID
            Name (_CID, EisaId ("SMOCF05"))  // _CID: Compatible ID
            Name (_UID, Zero)  // _UID: Unique ID
            Method (_STA, 0, NotSerialized)  // _STA: Status
            {
                Return (0x0F)
            }
    
            Method (_CRS, 0, NotSerialized)  // _CRS: Current Resource Settings
            {
                Name (RBUF, ResourceTemplate ()
                {
                    I2cSerialBusV2 (0x006A, ControllerInitiated, 0x00061A80,
                        AddressingMode7Bit, "\\_SB.I2CD",
                        0x00, ResourceConsumer, , Exclusive,
                        RawDataBuffer (0x04)  // Vendor Data
                        {
                            0x53, 0x4C, 0x41, 0x30
                        })
                    I2cSerialBusV2 (0x006A, ControllerInitiated, 0x00061A80,
                        AddressingMode7Bit, "\\_SB.I2CD",
                        0x00, ResourceConsumer, , Exclusive,
                        RawDataBuffer (0x04)  // Vendor Data
                        {
                            0x53, 0x4C, 0x47, 0x30
                        })
                    GpioInt (Edge, ActiveHigh, Exclusive, PullNone, 0x0000,
                        "\\_SB.GPIO", 0x00, ResourceConsumer, ,
                        RawDataBuffer (0x04)  // Vendor Data
                        {
                            0x53, 0x4C, 0x41, 0x30
                        })
                        {   // Pin list
                            0x0009
                        }
                })
                Return (RBUF) /* \_SB_.I2CD.STS_._CRS.RBUF */
            }
    
            Method (SLA0, 0, NotSerialized)
            {
                Name (RBUF, Package (0x03)
                {
                    "-1 0 0",
                    "0 -1 0",
                    "0 0 -1"
                })
                Return (RBUF) /* \_SB_.I2CD.STS_.SLA0.RBUF */
            }
    
            Method (SLG0, 0, NotSerialized)
            {
                Name (RBUF, Package (0x03)
                {
                    "1 0 0",
                    "0 1 0",
                    "0 0 1"
                })
                Return (RBUF) /* \_SB_.I2CD.STS_.SLG0.RBUF */
            }
        }
    }

Samuel Dionne-Riel (2):
  iio: imu: lsm6dsx: Support SMOCF05 ACPI ID for LSM6DS3TR-C
  iio: imu: lsm6dsx: Add alternative ACPI mount matrix retrieval

 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 6 ++++++
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c  | 1 +
 2 files changed, 7 insertions(+)

-- 
2.51.0