1) I am still not able to get psr1 working on y-cordinate panels. Only psr2 works.
2) I haven't got a GTC panel to test this scenario. Once we test psr1 on psr2 GTC panel, we could add dev_priv->psr.psr2_support = false; till GTC is implemented.
-----Original Message-----
From: Vivi, Rodrigo
Sent: Friday, January 6, 2017 11:08 PM
To: Nagaraju, Vathsala <vathsala.nagaraju@xxxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx; intel-gfx@xxxxxxxxxxxxxxxxxxxxx; jim.bride@xxxxxxxxxxxxxxx; Patil, Deepti <deepti.patil@xxxxxxxxx>
Subject: Re: [PATCH 08/10] drm/i915/psr: enable psr2 for y cordinate panels
I was going to write the rv-b,
but something came to my mind...
In this case where y_cord_support but we don't have gtc yet, couldn't we enable PSR1 instead?
in this case instead of return false we would do dev_priv->psr.psr2_support = false;
what do you think/advise?
On Fri, 2017-01-06 at 23:01 +0530, vathsala nagaraju wrote:
> Psr2 is enabled only for y cordinate panels.Once GTC (global time
> code) is implemented,this restriction is removed so that psr2 can work
> on panels without y cordinate support.
>
> v2: (Rodrigo)
> - Move the check to intel_psr_match_conditions
>
> v3: (Rodrigo)
> - add return false
>
> Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> Cc: Jim Bride <jim.bride@xxxxxxxxxxxxxxx>
> Signed-off-by: Vathsala Nagaraju <vathsala.nagaraju@xxxxxxxxx>
> Signed-off-by: Patil Deepti <deepti.patil@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_psr.c | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_psr.c
> b/drivers/gpu/drm/i915/intel_psr.c
> index 05efd4e..fc32b04 100644
> --- a/drivers/gpu/drm/i915/intel_psr.c
> +++ b/drivers/gpu/drm/i915/intel_psr.c
> @@ -433,6 +433,15 @@ static bool intel_psr_match_conditions(struct intel_dp *intel_dp)
> return false;
> }
>
> + /*
> + * FIXME:enable psr2 only for y-cordinate psr2 panels
> + * After gtc implementation , remove this restriction.
> + */
> + if (!dev_priv->psr.y_cord_support && dev_priv->psr.psr2_support) {
> + DRM_DEBUG_KMS("PSR2 disabled, panel does not support Y coordinate\n");
> + return false;
> + }
> +
> dev_priv->psr.source_ok = true;
> return true;
> }
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