On Mon, Feb 29, 2016 at 04:24:16PM +0000, sergk sergk2mail wrote:
> But how then to obtain gpio name or if it is possible the list of all
> available names?
> For example decoded ACPI DSDT shows the following:
> how to get gpio name for mentioned in your reply function?
For existing systems that do not provide _DSD naming for GPIOs you still
can provide them in the driver itself (ugly but works). See
Documentation/acpi/gpio-properties.txt chapter "ACPI GPIO Mappings
Provided by Drivers".
> Does it according below DSDT should be "GPO1" or "INT33FC" or something other?
No. The DSDT below does not have any names.
> Kind regards,
> Serge Kolotylo.
>
> Device (TCS5)
> {
> Name (_ADR, Zero) // _ADR: Address
> Name (_HID, "CHPN0001") // _HID: Hardware ID
> Name (_CID, "PNP0C50" /* HID Protocol Device (I2C bus)
> */) // _CID: Compatible ID
> Name (_S0W, Zero) // _S0W: S0 Device Wake State
> Name (_DEP, Package (0x02) // _DEP: Dependencies
> {
> GPO1,
> I2C5
> })
> Method (_PS3, 0, Serialized) // _PS3: Power State 3
> {
> }
>
> Method (_PS0, 0, Serialized) // _PS0: Power State 0
> {
> If ((^^^GPO1.AVBL == One))
> {
> ^^^GPO1.TCD3 = Zero
Note that all these are part of GPIO Operation Region and not accessible
to the i2c-hid driver. The will be used when the device is powered on
and the pinctrl-baytrail has been loaded (that provides the Operation
Region).
If you need to use GPIOs from driver, they are listed in _CRS of the
device.
> }
>
> Sleep (0x05)
> If ((^^^I2C5.PMI1.AVBG == One))
> {
> ^^^I2C5.PMI1.TCON = One
> }
>
> Sleep (0x1E)
> If ((^^^GPO1.AVBL == One))
> {
> ^^^GPO1.TCD3 = One
> }
>
> Sleep (0x78)
> }
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