diff options
| author | Jani Nikula <jani.nikula@intel.com> | 2016-03-16 13:43:29 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2016-03-16 19:28:07 +0300 |
| commit | 3bdd14d542c207528b6ca71946c79b39af39ea51 (patch) | |
| tree | d6d372bceb7edfcd1923931d6ac08ec02abb06e7 /drivers/gpu/drm/i915/intel_bios.c | |
| parent | 6b93e9c89ee553c1f062cd5c7dcd35e06846568f (diff) | |
| download | linux-3bdd14d542c207528b6ca71946c79b39af39ea51.tar.xz | |
drm/i915: move VBT based TV presence check to intel_bios.c
Hide knowledge about VBT child devices in intel_bios.c.
v2: also move int_tv_support check to intel_bios.c (Sivakumar)
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1458125015-7931-1-git-send-email-jani.nikula@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_bios.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_bios.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index bf62a19c8f69..d5e6da01adaa 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -1431,3 +1431,44 @@ intel_bios_init(struct drm_i915_private *dev_priv) return 0; } + +/** + * intel_bios_is_tv_present - is integrated TV present in VBT + * @dev_priv: i915 device instance + * + * Return true if TV is present. If no child devices were parsed from VBT, + * assume TV is present. + */ +bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv) +{ + union child_device_config *p_child; + int i; + + if (!dev_priv->vbt.int_tv_support) + return false; + + if (!dev_priv->vbt.child_dev_num) + return true; + + for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { + p_child = dev_priv->vbt.child_dev + i; + /* + * If the device type is not TV, continue. + */ + switch (p_child->old.device_type) { + case DEVICE_TYPE_INT_TV: + case DEVICE_TYPE_TV: + case DEVICE_TYPE_TV_SVIDEO_COMPOSITE: + break; + default: + continue; + } + /* Only when the addin_offset is non-zero, it is regarded + * as present. + */ + if (p_child->old.addin_offset) + return true; + } + + return false; +} |