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/* SPDX-License-Identifier: GPL-2.0-or-later */
#define GPS_FUNC_SUPPORT 0
#define GPS_FUNC_GETCALLBACKS 0x13
#define GPS_FUNC_PSHARESTATUS 0x20
#define GPS_FUNC_PSHAREPARAMS 0x2a
#define QUERY_GET_STATUS 0
#define QUERY_GET_SUPPORTED_FIELDS 1
#define QUERY_GET_CURRENT_LIMITS 2
/* GPS return Package */
Name (GPSP, Buffer (0x28) {0x0})
CreateDWordField (GPSP, 0, RETN)
CreateDWordField (GPSP, 4, VRV1)
CreateDWordField (GPSP, 8, TGPU)
/* GETCALLBACKS return value
[0]: Callback for post-mode set
[1]: Callback for pre-mode set
[2]: Callback for post power state transition */
Name (GPSR, Buffer (4) { 0x4, 0x0, 0x0, 0x0 })
Method (GPS, 2, Serialized)
{
Switch (ToInteger (Arg0))
{
Case (GPS_FUNC_SUPPORT)
{
Return (ITOB(
(1 << GPS_FUNC_SUPPORT) |
(1 << GPS_FUNC_GETCALLBACKS) |
(1 << GPS_FUNC_PSHARESTATUS) |
(1 << GPS_FUNC_PSHAREPARAMS)))
}
Case (GPS_FUNC_GETCALLBACKS)
{
CreateDWordField (Arg1, 0, QURY)
/* Driver querying for which callbacks the ACPI code
wants callbacks for. */
If (QURY == 0)
{
Return (GPSR)
}
If (QURY & 0x4)
{
Printf("GPS: Kernel driver callback post power state transition")
Return (GPSR)
}
}
Case (GPS_FUNC_PSHARESTATUS)
{
Return (ITOB(
(0 << 0) | /* GPS_FUNC_PSHAREPARAMS should not be called
again after initialization, i.e., its return
value is not dynamically updated. */
(1 << 0) | /* System uses both a GPIO and ACPI notification
codes to set multiple GPU power limits. */
(0 << 21))) /* EDPpeak limit is default */
}
Case (GPS_FUNC_PSHAREPARAMS)
{
CreateField (Arg1, 0, 4, QUTY) /* Query type */
/* Version of return value */
VRV1 = 0x10000
Switch (ToInteger (QUTY))
{
Case (QUERY_GET_STATUS)
{
Return (GPSP)
}
Case (QUERY_GET_SUPPORTED_FIELDS)
{
/* Only GPU temperature is supported */
RETN = 0x100 | ToInteger (QUTY)
Return (GPSP)
}
Case (QUERY_GET_CURRENT_LIMITS)
{
/* Request a limit of '0' for the GPU temperature,
meaning there is no limit. */
RETN = 0x102
TGPU = 0
Return (GPSP)
}
}
}
}
Return (NV_ERROR_UNSUPPORTED)
}
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