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author | Takashi Iwai <tiwai@suse.de> | 2015-11-30 18:19:39 +0100 |
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committer | Takashi Iwai <tiwai@suse.de> | 2015-12-10 13:39:30 +0100 |
commit | 0bdf5a05647a66dcc6394986e061daeac9b1cf96 (patch) | |
tree | 04be86303fff8e9c65bbdb6cd0960fb829a03164 /drivers/gpu/drm/i915/intel_ddi.c | |
parent | cae666ceb8c3f154351f7df29c522f7a7016bdc0 (diff) | |
download | op-kernel-dev-0bdf5a05647a66dcc6394986e061daeac9b1cf96.zip op-kernel-dev-0bdf5a05647a66dcc6394986e061daeac9b1cf96.tar.gz |
drm/i915: Add reverse mapping between port and intel_encoder
This patch adds a reverse mapping from a digital port number to
intel_encoder object containing the corresponding intel_digital_port.
It simplifies the query of the encoder a lot.
Note that, even if it's a valid digital port, the dig_port_map[] might
point still to NULL -- usually it implies a DP MST port. Due to this
fact, the NULL check in each place has no WARN_ON() and just skips the
port. Once when the situation changes in future, we might introduce
WARN_ON() for a more strict check.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ddi.c')
-rw-r--r-- | drivers/gpu/drm/i915/intel_ddi.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 76ce7c2..59deb0d 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -3295,6 +3295,7 @@ void intel_ddi_init(struct drm_device *dev, enum port port) intel_encoder->get_config = intel_ddi_get_config; intel_dig_port->port = port; + dev_priv->dig_port_map[port] = intel_encoder; intel_dig_port->saved_port_bits = I915_READ(DDI_BUF_CTL(port)) & (DDI_BUF_PORT_REVERSAL | DDI_A_4_LANES); |