On Wed, Apr 05, 2017 at 12:03:33AM +0200, Hans de Goede wrote:
> By default the i2c subsys creates an i2c-client for the first I2cSerialBus
> resource of an acpi_device, but some acpi_devices have multiple
> I2cSerialBus resources and we may want to instantiate i2c-clients for
> the others.
>
> This commit adds a new i2c_acpi_new_device function which can be used to
> create an i2c-client for any I2cSerialBus resource of an acpi_device.
>
> Note that the other resources may even be on a different i2c bus, so just
> retrieving the client address is not enough.
>
> Here is an example DSDT excerpt from such a device:
>
> Device (WIDR)
> {
> Name (_HID, "INT33FE" /* XPOWER Battery Device */)
> Name (_CID, "INT33FE" /* XPOWER Battery Device */)
> Name (_DDN, "WC PMIC Battery Device")
> <snip>
> Name (RBUF, ResourceTemplate ()
> {
> I2cSerialBusV2 (0x005E, ControllerInitiated, 0x000186A0,
> AddressingMode7Bit, "\\_SB.PCI0.I2C7",
> 0x00, ResourceConsumer, , Exclusive,
> )
> I2cSerialBusV2 (0x0036, ControllerInitiated, 0x000186A0,
> AddressingMode7Bit, "\\_SB.PCI0.I2C1",
> 0x00, ResourceConsumer, , Exclusive,
> )
> I2cSerialBusV2 (0x0022, ControllerInitiated, 0x00061A80,
> AddressingMode7Bit, "\\_SB.PCI0.I2C1",
> 0x00, ResourceConsumer, , Exclusive,
> )
> I2cSerialBusV2 (0x0054, ControllerInitiated, 0x00061A80,
> AddressingMode7Bit, "\\_SB.PCI0.I2C1",
> 0x00, ResourceConsumer, , Exclusive,
> )
> GpioInt (Level, ActiveLow, Exclusive, PullNone, 0x0000,
> "\\_SB.PCI0.I2C7.PMI5", 0x00, ResourceConsumer, ,
> )
> { // Pin list
> 0x0012
> }
> GpioInt (Edge, ActiveLow, ExclusiveAndWake, PullNone, 0x0000,
> "\\_SB.GPO1", 0x00, ResourceConsumer, ,
> )
> { // Pin list
> 0x0005
> }
> GpioInt (Level, ActiveLow, Exclusive, PullNone, 0x0000,
> "\\_SB.PCI0.I2C7.PMI5", 0x00, ResourceConsumer, ,
> )
> { // Pin list
> 0x0013
> }
> })
> Method (_CRS, 0, NotSerialized) // _CRS: Current Resource Settings
> {
> Return (RBUF) /* \_SB_.PCI0.I2C7.WIDR.RBUF */
> }
> <snip>
> }
>
> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
> Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Applied to for-next, thanks!
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