From dc50ba7f9a6d9a920409892c7f30bce266067345 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 26 Jun 2013 00:33:35 -0400 Subject: drm/radeon/kms: add dpm support for evergreen (v4) This adds dpm support for evergreen asics. This includes: - clockgating - dynamic engine clock scaling - dynamic memory clock scaling - dynamic voltage scaling - dynamic pcie gen1/gen2 switching (requires additional acpi support) Set radeon.dpm=1 to enable. v2: reduce stack usage, rename ulv struct v3: fix thermal interrupt check notices by Jerome v4: fix state enable Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/evergreen.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'drivers/gpu/drm/radeon/evergreen.c') diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index 63a1e6ec7f5a..54d1d736dee2 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -4167,6 +4167,7 @@ int evergreen_irq_set(struct radeon_device *rdev) u32 grph1 = 0, grph2 = 0, grph3 = 0, grph4 = 0, grph5 = 0, grph6 = 0; u32 afmt1 = 0, afmt2 = 0, afmt3 = 0, afmt4 = 0, afmt5 = 0, afmt6 = 0; u32 dma_cntl, dma_cntl1 = 0; + u32 thermal_int = 0; if (!rdev->irq.installed) { WARN(1, "Can't enable IRQ/MSI because no handler is installed\n"); @@ -4186,6 +4187,8 @@ int evergreen_irq_set(struct radeon_device *rdev) hpd4 = RREG32(DC_HPD4_INT_CONTROL) & ~DC_HPDx_INT_EN; hpd5 = RREG32(DC_HPD5_INT_CONTROL) & ~DC_HPDx_INT_EN; hpd6 = RREG32(DC_HPD6_INT_CONTROL) & ~DC_HPDx_INT_EN; + thermal_int = RREG32(CG_THERMAL_INT) & + ~(THERM_INT_MASK_HIGH | THERM_INT_MASK_LOW); afmt1 = RREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) & ~AFMT_AZ_FORMAT_WTRIG_MASK; afmt2 = RREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET) & ~AFMT_AZ_FORMAT_WTRIG_MASK; @@ -4231,6 +4234,11 @@ int evergreen_irq_set(struct radeon_device *rdev) } } + if (rdev->irq.dpm_thermal) { + DRM_DEBUG("dpm thermal\n"); + thermal_int |= THERM_INT_MASK_HIGH | THERM_INT_MASK_LOW; + } + if (rdev->irq.crtc_vblank_int[0] || atomic_read(&rdev->irq.pflip[0])) { DRM_DEBUG("evergreen_irq_set: vblank 0\n"); @@ -4352,6 +4360,7 @@ int evergreen_irq_set(struct radeon_device *rdev) WREG32(DC_HPD4_INT_CONTROL, hpd4); WREG32(DC_HPD5_INT_CONTROL, hpd5); WREG32(DC_HPD6_INT_CONTROL, hpd6); + WREG32(CG_THERMAL_INT, thermal_int); WREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET, afmt1); WREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET, afmt2); @@ -4543,6 +4552,7 @@ int evergreen_irq_process(struct radeon_device *rdev) u32 ring_index; bool queue_hotplug = false; bool queue_hdmi = false; + bool queue_thermal = false; if (!rdev->ih.enabled || rdev->shutdown) return IRQ_NONE; @@ -4864,6 +4874,16 @@ restart_ih: DRM_DEBUG("IH: DMA trap\n"); radeon_fence_process(rdev, R600_RING_TYPE_DMA_INDEX); break; + case 230: /* thermal low to high */ + DRM_DEBUG("IH: thermal low to high\n"); + rdev->pm.dpm.thermal.high_to_low = false; + queue_thermal = true; + break; + case 231: /* thermal high to low */ + DRM_DEBUG("IH: thermal high to low\n"); + rdev->pm.dpm.thermal.high_to_low = true; + queue_thermal = true; + break; case 233: /* GUI IDLE */ DRM_DEBUG("IH: GUI idle\n"); break; @@ -4886,6 +4906,8 @@ restart_ih: schedule_work(&rdev->hotplug_work); if (queue_hdmi) schedule_work(&rdev->audio_work); + if (queue_thermal && rdev->pm.dpm_enabled) + schedule_work(&rdev->pm.dpm.thermal.work); rdev->ih.rptr = rptr; WREG32(IH_RB_RPTR, rdev->ih.rptr); atomic_set(&rdev->ih.lock, 0); -- cgit v1.2.1