Messages in this thread Patch in this message |  | | From | Andrew Cooks <> | Subject | [PATCH 1/2] i2c: add ACPI support for i2c-piix4 | Date | Thu, 23 Nov 2017 13:09:37 +1000 |
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This enables the i2c-piix4 SMBus controller driver to enumerate I2C slave devices using ACPI. It builds on the related I2C mux device work in commit 8eb5c87a92c0 ("i2c: add ACPI support for I2C mux ports")
Signed-off-by: Andrew Cooks <andrew.cooks@opengear.com> --- drivers/i2c/busses/i2c-piix4.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c index 174579d..9260cfa 100644 --- a/drivers/i2c/busses/i2c-piix4.c +++ b/drivers/i2c/busses/i2c-piix4.c @@ -837,6 +837,12 @@ static int piix4_add_adapter(struct pci_dev *dev, unsigned short smba, /* set up the sysfs linkage to our parent device */ adap->dev.parent = &dev->dev; + if (has_acpi_companion(&dev->dev)) { + acpi_preset_companion(&adap->dev, + ACPI_COMPANION(&dev->dev), + port); + } + snprintf(adap->name, sizeof(adap->name), "SMBus PIIX4 adapter%s at %04x", name, smba); -- 2.7.4
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