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Commit 066f1f0b authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon: disable runtime pm in certain cases 

If the platform does not support hybrid graphics or ATPX dGPU
power control.

bug: https://bugzilla.kernel.org/show_bug.cgi?id=51381



Acked-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent 3b496626

drivers/gpu/drm/radeon/radeon_device.c

+13 −0
Original line number Diff line number Diff line
@@ -104,6 +104,14 @@ static const char radeon_family_name[][16] = { 
	"LAST",

};



#if defined(CONFIG_VGA_SWITCHEROO)

bool radeon_has_atpx_dgpu_power_cntl(void);

bool radeon_is_atpx_hybrid(void);

#else

static inline bool radeon_has_atpx_dgpu_power_cntl(void) { return false; }

static inline bool radeon_is_atpx_hybrid(void) { return false; }

#endif



#define RADEON_PX_QUIRK_DISABLE_PX  (1 << 0)

#define RADEON_PX_QUIRK_LONG_WAKEUP (1 << 1)
@@ -160,6 +168,11 @@ static void radeon_device_handle_px_quirks(struct radeon_device *rdev) 


	if (rdev->px_quirk_flags & RADEON_PX_QUIRK_DISABLE_PX)

		rdev->flags &= ~RADEON_IS_PX;



	/* disable PX is the system doesn't support dGPU power control or hybrid gfx */

	if (!radeon_is_atpx_hybrid() &&

	    !radeon_has_atpx_dgpu_power_cntl())

		rdev->flags &= ~RADEON_IS_PX;

}



/**