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Commit 4bd9f516 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon/dpm: add pcie gen helper function 



Add a helper function to determine the preferred
pcie gen based on the card, system, and circumstance.

Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 2abba66e

drivers/gpu/drm/radeon/r600_dpm.c

+23 −0
Original line number Diff line number Diff line
@@ -997,3 +997,26 @@ void r600_free_extended_power_table(struct radeon_device *rdev) 
	if (rdev->pm.dpm.dyn_state.ppm_table)

		kfree(rdev->pm.dpm.dyn_state.ppm_table);

}



enum radeon_pcie_gen r600_get_pcie_gen_support(struct radeon_device *rdev,

					       u32 sys_mask,

					       enum radeon_pcie_gen asic_gen,

					       enum radeon_pcie_gen default_gen)

{

	switch (asic_gen) {

	case RADEON_PCIE_GEN1:

		return RADEON_PCIE_GEN1;

	case RADEON_PCIE_GEN2:

		return RADEON_PCIE_GEN2;

	case RADEON_PCIE_GEN3:

		return RADEON_PCIE_GEN3;

	default:

		if ((sys_mask & DRM_PCIE_SPEED_80) && (default_gen == RADEON_PCIE_GEN3))

			return RADEON_PCIE_GEN3;

		else if ((sys_mask & DRM_PCIE_SPEED_50) && (default_gen == RADEON_PCIE_GEN2))

			return RADEON_PCIE_GEN2;

		else

			return RADEON_PCIE_GEN1;

	}

	return RADEON_PCIE_GEN1;

}

drivers/gpu/drm/radeon/r600_dpm.h

+5 −0
Original line number Diff line number Diff line
@@ -218,4 +218,9 @@ bool r600_is_internal_thermal_sensor(enum radeon_int_thermal_type sensor); 
int r600_parse_extended_power_table(struct radeon_device *rdev);

void r600_free_extended_power_table(struct radeon_device *rdev);



enum radeon_pcie_gen r600_get_pcie_gen_support(struct radeon_device *rdev,

					       u32 sys_mask,

					       enum radeon_pcie_gen asic_gen,

					       enum radeon_pcie_gen default_gen);



#endif