diff options
| author | Jesse Barnes <jbarnes@nietzche.virtuousgeek.org> | 2008-05-12 15:47:19 -0700 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@nietzche.virtuousgeek.org> | 2008-05-12 15:47:19 -0700 |
| commit | d32ce7f621c0d8e42cdf88ce6f1d15638a3d34b7 (patch) | |
| tree | d670f833f4bcedb57815567cf0459bf553d7adf2 /linux-core | |
| parent | a51e38548cfdece2978e9b5f0d6f0467ba7a7272 (diff) | |
i915: TV hotplug fixes
In order to avoid recursive ->detect->interrupt->detect->interrupt->...
we need to disable TV hotplug interrupts in
intel_tv.c:intel_tv_detect_type. We also need to enable the TV interrupt
detection and hotplug sequence properly in i915_irq.c.
Diffstat (limited to 'linux-core')
| -rw-r--r-- | linux-core/intel_tv.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/linux-core/intel_tv.c b/linux-core/intel_tv.c index ba134d62..865e27b9 100644 --- a/linux-core/intel_tv.c +++ b/linux-core/intel_tv.c @@ -1360,11 +1360,21 @@ intel_tv_detect_type (struct drm_crtc *crtc, struct drm_output *output) struct drm_device *dev = output->dev; struct drm_i915_private *dev_priv = dev->dev_private; struct intel_output *intel_output = output->driver_private; + u32 pipeastat, pipeastat_save; u32 tv_ctl, save_tv_ctl; u32 tv_dac, save_tv_dac; int type = ConnectorUnknown; tv_dac = I915_READ(TV_DAC); + + /* Disable TV interrupts around load detect or we'll recurse */ + pipeastat = I915_READ(I915REG_PIPEASTAT); + pipeastat_save = pipeastat; + pipeastat &= ~I915_HOTPLUG_INTERRUPT_ENABLE; + pipeastat &= ~I915_HOTPLUG_TV_INTERRUPT_ENABLE; + I915_WRITE(I915REG_PIPEASTAT, pipeastat | I915_HOTPLUG_TV_CLEAR | + I915_HOTPLUG_CLEAR); + /* * Detect TV by polling) */ @@ -1412,6 +1422,10 @@ intel_tv_detect_type (struct drm_crtc *crtc, struct drm_output *output) type = -1; } + /* Restore interrupt config */ + I915_WRITE(I915REG_PIPEASTAT, pipeastat_save | I915_HOTPLUG_TV_CLEAR | + I915_HOTPLUG_CLEAR); + return type; } @@ -1434,10 +1448,15 @@ intel_tv_detect(struct drm_output *output) mode = reported_modes[0]; drm_mode_set_crtcinfo(&mode, CRTC_INTERLACE_HALVE_V); - crtc = intel_get_load_detect_pipe(output, &mode, &dpms_mode); - if (crtc) { - type = intel_tv_detect_type(crtc, output); - intel_release_load_detect_pipe(output, dpms_mode); + if (output->crtc) { + type = intel_tv_detect_type(output->crtc, output); + } else { + crtc = intel_get_load_detect_pipe(output, &mode, &dpms_mode); + if (crtc) { + type = intel_tv_detect_type(crtc, output); + intel_release_load_detect_pipe(output, dpms_mode); + } else + type = -1; } if (type != tv_priv->type) { |