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| author | Alex Deucher <alexdeucher@gmail.com> | 2009-12-04 14:53:41 -0500 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2009-12-08 10:46:38 +1000 |
| commit | 05a05c506f52041daa511f4899b63d21c9457474 (patch) | |
| tree | 00336d311cc7ef14421c0dddb17f468b2de48375 /drivers/gpu/drm/radeon/r100.c | |
| parent | b500f68045058454549f5f8553110ef086d8d06b (diff) | |
| download | lwn-05a05c506f52041daa511f4899b63d21c9457474.tar.gz lwn-05a05c506f52041daa511f4899b63d21c9457474.zip | |
drm/radeon/kms: add hpd support for r1xx-r4xx asics
This just adds the functionality, it's not hooked up
yet.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/r100.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/r100.c | 106 |
1 files changed, 104 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c index 109096802e66..2b534c528aaf 100644 --- a/drivers/gpu/drm/radeon/r100.c +++ b/drivers/gpu/drm/radeon/r100.c @@ -65,6 +65,95 @@ MODULE_FIRMWARE(FIRMWARE_R520); * r100,rv100,rs100,rv200,rs200,r200,rv250,rs300,rv280 */ +/* hpd for digital panel detect/disconnect */ +bool r100_hpd_sense(struct radeon_device *rdev, enum radeon_hpd_id hpd) +{ + bool connected = false; + + switch (hpd) { + case RADEON_HPD_1: + if (RREG32(RADEON_FP_GEN_CNTL) & RADEON_FP_DETECT_SENSE) + connected = true; + break; + case RADEON_HPD_2: + if (RREG32(RADEON_FP2_GEN_CNTL) & RADEON_FP2_DETECT_SENSE) + connected = true; + break; + default: + break; + } + return connected; +} + +void r100_hpd_set_polarity(struct radeon_device *rdev, + enum radeon_hpd_id hpd) +{ + u32 tmp; + bool connected = r100_hpd_sense(rdev, hpd); + + switch (hpd) { + case RADEON_HPD_1: + tmp = RREG32(RADEON_FP_GEN_CNTL); + if (connected) + tmp &= ~RADEON_FP_DETECT_INT_POL; + else + tmp |= RADEON_FP_DETECT_INT_POL; + WREG32(RADEON_FP_GEN_CNTL, tmp); + break; + case RADEON_HPD_2: + tmp = RREG32(RADEON_FP2_GEN_CNTL); + if (connected) + tmp &= ~RADEON_FP2_DETECT_INT_POL; + else + tmp |= RADEON_FP2_DETECT_INT_POL; + WREG32(RADEON_FP2_GEN_CNTL, tmp); + break; + default: + break; + } +} + +void r100_hpd_init(struct radeon_device *rdev) +{ + struct drm_device *dev = rdev->ddev; + struct drm_connector *connector; + + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + struct radeon_connector *radeon_connector = to_radeon_connector(connector); + switch (radeon_connector->hpd.hpd) { + case RADEON_HPD_1: + rdev->irq.hpd[0] = true; + break; + case RADEON_HPD_2: + rdev->irq.hpd[1] = true; + break; + default: + break; + } + } + r100_irq_set(rdev); +} + +void r100_hpd_fini(struct radeon_device *rdev) +{ + struct drm_device *dev = rdev->ddev; + struct drm_connector *connector; + + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + struct radeon_connector *radeon_connector = to_radeon_connector(connector); + switch (radeon_connector->hpd.hpd) { + case RADEON_HPD_1: + rdev->irq.hpd[0] = false; + break; + case RADEON_HPD_2: + rdev->irq.hpd[1] = false; + break; + default: + break; + } + } +} + /* * PCI GART */ @@ -163,6 +252,12 @@ int r100_irq_set(struct radeon_device *rdev) if (rdev->irq.crtc_vblank_int[1]) { tmp |= RADEON_CRTC2_VBLANK_MASK; } + if (rdev->irq.hpd[0]) { + tmp |= RADEON_FP_DETECT_MASK; + } + if (rdev->irq.hpd[1]) { + tmp |= RADEON_FP2_DETECT_MASK; + } WREG32(RADEON_GEN_INT_CNTL, tmp); return 0; } @@ -181,8 +276,9 @@ void r100_irq_disable(struct radeon_device *rdev) static inline uint32_t r100_irq_ack(struct radeon_device *rdev) { uint32_t irqs = RREG32(RADEON_GEN_INT_STATUS); - uint32_t irq_mask = RADEON_SW_INT_TEST | RADEON_CRTC_VBLANK_STAT | - RADEON_CRTC2_VBLANK_STAT; + uint32_t irq_mask = RADEON_SW_INT_TEST | + RADEON_CRTC_VBLANK_STAT | RADEON_CRTC2_VBLANK_STAT | + RADEON_FP_DETECT_STAT | RADEON_FP2_DETECT_STAT; if (irqs) { WREG32(RADEON_GEN_INT_STATUS, irqs); @@ -213,6 +309,12 @@ int r100_irq_process(struct radeon_device *rdev) if (status & RADEON_CRTC2_VBLANK_STAT) { drm_handle_vblank(rdev->ddev, 1); } + if (status & RADEON_FP_DETECT_STAT) { + DRM_INFO("HPD1\n"); + } + if (status & RADEON_FP2_DETECT_STAT) { + DRM_INFO("HPD2\n"); + } status = r100_irq_ack(rdev); } if (rdev->msi_enabled) { |