[Intel-gfx] [PATCH v6 14/18] drm/i915: Fix enabled infoframe states of lspcon

[Shankar, Uma]

> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces at lists.freedesktop.org> On Behalf Of Gwan-
> gyeong Mun
> Sent: Monday, February 10, 2020 10:40 PM
> To: intel-gfx at lists.freedesktop.org
> Cc: linux-fbdev at vger.kernel.org; dri-devel at lists.freedesktop.org
> Subject: [Intel-gfx] [PATCH v6 14/18] drm/i915: Fix enabled infoframe states of
> lspcon
> 
> Compared to implementation of DP and HDMI's encoder->infoframes_enabled, the
> lspcon's implementation returns its active state. (we expect enabled infoframe
> states of HW.) It leads to pipe state mismatch error when ddi_get_config is called.
> 
> Because the current implementation of lspcon is not ready to support readout
> infoframes, we need to return 0 here.
> 
> In order to support readout to lspcon, we need to implement read_infoframe and
> infoframes_enabled. And set_infoframes also have to set an appropriate bit on
> crtc_state->infoframes.enable

Looks good to me.
Reviewed-by: Uma Shankar <uma.shankar at intel.com>

> Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Signed-off-by: Gwan-gyeong Mun <gwan-gyeong.mun at intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_lspcon.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c
> b/drivers/gpu/drm/i915/display/intel_lspcon.c
> index d807c5648c87..6ff7b226f0a1 100644
> --- a/drivers/gpu/drm/i915/display/intel_lspcon.c
> +++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
> @@ -522,7 +522,7 @@ u32 lspcon_infoframes_enabled(struct intel_encoder
> *encoder,
>  			      const struct intel_crtc_state *pipe_config)  {
>  	/* FIXME actually read this from the hw */
> -	return enc_to_intel_lspcon(encoder)->active;
> +	return 0;
>  }
> 
>  void lspcon_resume(struct intel_lspcon *lspcon)
> --
> 2.25.0
> 
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