mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-08-23 17:30:02 +00:00
Code Issues Releases Wiki Activity

drm/i915/bios: Nuke DEVICE_TYPE_DP_DUAL_MODE_BITS

Browse source 
Replace the DEVICE_TYPE_DP_DUAL_MODE_BITS stuff with just
a DP+HDMI check. The rest of the bits shouldn't really
matter anyway.

The slight change in behaviour here is that now we do look at
the DEVICE_TYPE_NOT_HDMI_OUTPUT bit (via
intel_bios_encoder_supports_hdmi()) when we previously ignored it.
The one platform we know that has problems with that bit is VLV.
But IIRC the problem was always that buggy VBTs basically never
set that bit. So that should be OK since all it would do is make
all DVI ports look like HDMI ports instead. Also can't imagine
there are many VLV machines with actual DVI ports in existence.

We still keep the rest of the dvo_port/aux_ch checks as we
can't trust that DP+HDMI device type equals DP++ due to
buggy VBTs.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211217155403.31477-6-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä 2021-12-17 17:54:02 +02:00
parent a868a1e57e
commit 044cbc7a74
2 changed files with 6 additions and 15 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
drivers/gpu/drm/i915/display/intel_bios.c
View file

@ -2664,10 +2664,12 @@ bool intel_bios_is_port_edp(struct drm_i915_private *i915, enum port port)
return devdata && intel_bios_encoder_supports_edp(devdata);
}
static bool child_dev_is_dp_dual_mode(const struct child_device_config *child)
static bool intel_bios_encoder_supports_dp_dual_mode(const struct intel_bios_encoder_data *devdata)
{
if ((child->device_type & DEVICE_TYPE_DP_DUAL_MODE_BITS) !=
(DEVICE_TYPE_DP_DUAL_MODE & DEVICE_TYPE_DP_DUAL_MODE_BITS))
const struct child_device_config *child = &devdata->child;
if (!intel_bios_encoder_supports_dp(devdata) ||
!intel_bios_encoder_supports_hdmi(devdata))
return false;
if (dvo_port_type(child->dvo_port) == DVO_PORT_DPA)
@ -2687,7 +2689,7 @@ bool intel_bios_is_port_dp_dual_mode(struct drm_i915_private *i915,
const struct intel_bios_encoder_data *devdata =
intel_bios_encoder_data_lookup(i915, port);
return devdata && child_dev_is_dp_dual_mode(&devdata->child);
return devdata && intel_bios_encoder_supports_dp_dual_mode(devdata);
}
/**

11
drivers/gpu/drm/i915/display/intel_vbt_defs.h
View file

@ -226,17 +226,6 @@ struct bdb_general_features {
#define DEVICE_TYPE_DIGITAL_OUTPUT (1 << 1)
#define DEVICE_TYPE_ANALOG_OUTPUT (1 << 0)
#define DEVICE_TYPE_DP_DUAL_MODE_BITS \
(DEVICE_TYPE_INTERNAL_CONNECTOR | \
DEVICE_TYPE_MIPI_OUTPUT | \
DEVICE_TYPE_COMPOSITE_OUTPUT | \
DEVICE_TYPE_LVDS_SIGNALING | \
DEVICE_TYPE_TMDS_DVI_SIGNALING | \
DEVICE_TYPE_VIDEO_SIGNALING | \
DEVICE_TYPE_DISPLAYPORT_OUTPUT | \
DEVICE_TYPE_DIGITAL_OUTPUT | \
DEVICE_TYPE_ANALOG_OUTPUT)
#define DEVICE_CFG_NONE 0x00
#define DEVICE_CFG_12BIT_DVOB 0x01
#define DEVICE_CFG_12BIT_DVOC 0x02