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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2022-09-16 23:41:32 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2022-09-19 19:59:08 +0300 |
| commit | 429a09553559297cc4e021fff2253f4035d3be2e (patch) | |
| tree | d1a6bb00780bdcb75dcccc45491bf5db27712030 /drivers/gpu/drm/i915/display/intel_bios.c | |
| parent | 48176104003058e2ba540fd815ec46c350d65926 (diff) | |
| download | linux-429a09553559297cc4e021fff2253f4035d3be2e.tar.gz linux-429a09553559297cc4e021fff2253f4035d3be2e.tar.bz2 linux-429a09553559297cc4e021fff2253f4035d3be2e.zip | |
drm/i915: WARN if a port should use VBT provided vswing tables
We don't parse the VBT vswing/preemphassis tables at all currently.
Let's WARN if a port wants to use them so we get a heads up that
whether we really need to implement this stuff or not. My
current stash contains no VBTs with this bit set.
v2: Move to print_ddi_port() (Jani)
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220916204132.10469-1-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_bios.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_bios.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c index 28bdb936cd1f..4c543e8205ca 100644 --- a/drivers/gpu/drm/i915/display/intel_bios.c +++ b/drivers/gpu/drm/i915/display/intel_bios.c @@ -2676,6 +2676,14 @@ static void print_ddi_port(const struct intel_bios_encoder_data *devdata, drm_dbg_kms(&i915->drm, "Port %c VBT DP max link rate: %d\n", port_name(port), dp_max_link_rate); + + /* + * FIXME need to implement support for VBT + * vswing/preemph tables should this ever trigger. + */ + drm_WARN(&i915->drm, child->use_vbt_vswing, + "Port %c asks to use VBT vswing/preemph tables\n", + port_name(port)); } static void parse_ddi_port(struct intel_bios_encoder_data *devdata) |