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drm/radeon/atpx: check for ATIF dGPU wake for display events support

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Some ATPX laptops implement special circuitry to generate
display hotplug events via ACPI when the dGPU is powered off.
Check if this is supported.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2016-09-14 14:14:55 -04:00
parent 1b0f568d24
commit 4777166989
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/radeon/radeon_atpx_handler.c
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@ -29,6 +29,7 @@ struct radeon_atpx {
acpi_handle handle;
struct radeon_atpx_functions functions;
bool is_hybrid;
bool dgpu_req_power_for_displays;
};
static struct radeon_atpx_priv {
@ -72,6 +73,10 @@ bool radeon_is_atpx_hybrid(void) {
return radeon_atpx_priv.atpx.is_hybrid;
}
bool radeon_atpx_dgpu_req_power_for_displays(void) {
return radeon_atpx_priv.atpx.dgpu_req_power_for_displays;
}
/**
* radeon_atpx_call - call an ATPX method
*