Hello,
I am working now to get sound working at Lenovo Yoga Book tablet. It is
Intel CherryTrail-based device and has RT5677 sound codec.
The RT5677 codec driver uses two GPIOs to reset and enable the codec,
with names 'realtek,reset' and 'realtek,pow-ldo2'. The ACPI definition lacks a
_DSD section with GPIO name->CRS ID definition, so I need to manually
define this mapping somewhere using existing
devm_acpi_dev_add_driver_gpios() method (various devices has various _CRS
definitions order and content, so this is cannot be placed into
rt5677.c codec driver).
The most obvious place for this is ASoC machine driver for my device, but the
codec driver is binded to the ACPI device and initializes before machine
driver.
Can somebody advice how to define such GPIOs mapping for codec in my
case?
The ACPI definition of sound device is below. Second I2C address
definition is for TS3A277E jack detector. The first GPIO in the _CRS is
codec reset, the second is pow-ldo2.
Device (RTEK)
{
Name (_ADR, Zero) // _ADR: Address
Name (_HID, "10EC5677") // _HID: Hardware ID
Name (_CID, "10EC5677") // _CID: Compatible ID
Name (_DDN, "Realtek IIS Audio Codec") // _DDN: DOS Device Name
Name (_SUB, "17AA7005") // _SUB: Subsystem ID
Name (_UID, One) // _UID: Unique ID
Name (_PR0, Package (0x01) // _PR0: Power Resources for D0
{
CLK3
})
Name (CHAN, Package (0x02)
{
One,
0x0124F800
})
Method (_CRS, 0, NotSerialized) // _CRS: Current Resource Settings
{
Name (SBUF, ResourceTemplate ()
{
I2cSerialBusV2 (0x002C, ControllerInitiated, 0x000186A0,
AddressingMode7Bit, "\\_SB.PCI0.I2C1",
0x00, ResourceConsumer, , Exclusive,
)
I2cSerialBusV2 (0x003B, ControllerInitiated, 0x000186A0,
AddressingMode7Bit, "\\_SB.PCI0.I2C1",
0x00, ResourceConsumer, , Exclusive,
)
GpioIo (Exclusive, PullDefault, 0x0000, 0x0000, IoRestrictionOutputOnly,
"\\_SB.GPO3", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x0019
}
GpioIo (Exclusive, PullDefault, 0x0000, 0x0000, IoRestrictionOutputOnly,
"\\_SB.GPO3", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x0012
}
GpioIo (Exclusive, PullDefault, 0x0000, 0x0000, IoRestrictionOutputOnly,
"\\_SB.GPO3", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x0030
}
GpioInt (Edge, ActiveLow, Exclusive, PullNone, 0x0000,
"\\_SB.GPO0", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x005B
}
GpioInt (Edge, ActiveLow, Exclusive, PullNone, 0x0000,
"\\_SB.GPO0", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x004D
}
SpiSerialBusV2 (0x0001, PolarityLow, FourWireMode, 0x08,
ControllerInitiated, 0x003D0900, ClockPolarityHigh,
ClockPhaseSecond, "\\_SB.PCI0.SPI1",
0x00, ResourceConsumer, , Exclusive,
)
})
Return (SBUF) /* \_SB_.PCI0.I2C1.RTEK._CRS.SBUF */
}
Method (_STA, 0, NotSerialized) // _STA: Status
{
Return (0x0F)
}
Method (_DIS, 0, NotSerialized) // _DIS: Disable Device
{
}
}
--
Yauhen Kharuzhy
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