Re: [PATCH 2/3] drm/i915: Use vlv_power_sequencer_pipe() only to get pipe

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On Mon, 10 Nov 2014, Vandana Kannan <vandana.kannan@xxxxxxxxx> wrote:
> vlv_power_sequencer_pipe() calls into init PPS functions. Changing this
> function to make it only return pipe and not call PPS init.
> This is because PPS init calls into this function to get a pipe ID and all
> other callers just need the pipe ID.
>
> Signed-off-by: Vandana Kannan <vandana.kannan@xxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/intel_dp.c | 4 ----
>  1 file changed, 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index 34d8105..1d4bf78 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -434,10 +434,6 @@ vlv_power_sequencer_pipe(struct intel_dp *intel_dp)
>  		      pipe_name(intel_dp->pps_pipe),
>  		      port_name(intel_dig_port->port));
>  
> -	/* init power sequencer on this pipe and port */
> -	intel_dp_init_panel_power_sequencer(dev, intel_dp);
> -	intel_dp_init_panel_power_sequencer_registers(dev, intel_dp);

IIUC if you end up this far in the function it's a special case, in most
cases it'll return with intel_dp->pps_pipe. And the special case
probably means you'll need to setup the registers and everything.

Ville?

BR,
Jani.


> -
>  	/*
>  	 * Even vdd force doesn't work until we've made
>  	 * the power sequencer lock in on the port.
> -- 
> 2.0.1
>

-- 
Jani Nikula, Intel Open Source Technology Center
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