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drm/radeon/kms/pm: Disable voltage adjust on RS780/RS880
The vddc value in the power tables is not an actual voltage like on discrete r6xx/r7xx/evergreen systems, but instead has a symbolic meaning (e.g., NONE, LOW, HIGH, etc.). See atombios.h Most RS780/RS880 vbioses don't have a SetVoltage table anyway, so it shouldn't be doing anything to the hardware at the moment. I need to figure out how voltage is supposed to work on the newer IGPs; until then, disable it. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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@ -1833,10 +1833,7 @@ void radeon_atombios_get_power_modes(struct radeon_device *rdev)
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/* skip invalid modes */
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if (rdev->pm.power_state[state_index].clock_info[mode_index].sclk == 0)
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continue;
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rdev->pm.power_state[state_index].clock_info[mode_index].voltage.type =
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VOLTAGE_SW;
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rdev->pm.power_state[state_index].clock_info[mode_index].voltage.voltage =
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clock_info->usVDDC;
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/* voltage works differently on IGPs */
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mode_index++;
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} else if (ASIC_IS_DCE4(rdev)) {
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struct _ATOM_PPLIB_EVERGREEN_CLOCK_INFO *clock_info =
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