On Fri, 18 May 2018, Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx> wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>
> We don't support using the power sequencer with other ports besides LVDS
> on pre-ilk platforms. WARN if someone has mistakenly connected the power
> sequencer to the wrong port.
>
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_display.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index a7702a72cd69..4773a4f52bfe 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -1236,7 +1236,12 @@ void assert_panel_unlocked(struct drm_i915_private *dev_priv, enum pipe pipe)
> pp_reg = PP_CONTROL(pipe);
> panel_pipe = pipe;
> } else {
> + u32 port_sel;
> +
> pp_reg = PP_CONTROL(0);
> + port_sel = I915_READ(PP_ON_DELAYS(0)) & PANEL_PORT_SELECT_MASK;
> +
> + WARN_ON(port_sel != PANEL_PORT_SELECT_LVDS);
> intel_lvds_port_enabled(dev_priv, LVDS, &panel_pipe);
> }
--
Jani Nikula, Intel Open Source Graphics Center
_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
