[igt-dev] [PATCH i-g-t 3/8] lib/psr: Add support to new modified i915_edp_psr_status output

[Souza, Jose]

kernel patches changing the debugfs can be found here:

https://patchwork.freedesktop.org/series/53510/

On Tue, 2018-12-04 at 15:09 -0800, José Roberto de Souza wrote:
> The kernel patch 'drm/i915: Refactor PSR status debugfs' changed the
> output of i915_edp_psr_status, so adding support to the new output
> here while keeping the support to the old one for a while.
> 
> Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
> Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
> ---
>  lib/igt_psr.c | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/lib/igt_psr.c b/lib/igt_psr.c
> index d68f4b49..eecee459 100644
> --- a/lib/igt_psr.c
> +++ b/lib/igt_psr.c
> @@ -34,8 +34,10 @@ static bool psr_active(int debugfs_fd, bool
> check_active)
>  
>  	igt_debugfs_simple_read(debugfs_fd, "i915_edp_psr_status", buf,
>  				sizeof(buf));
> -	active = strstr(buf, "HW Enabled & Active bit: yes\n") &&
> -		(strstr(buf, "SRDENT") || strstr(buf, "SLEEP"));
> +
> +	active = strstr(buf, "HW Enabled & Active bit: yes\n") ||
> +		 strstr(buf, "Source PSR ctl: enabled");
> +	active &= !!(strstr(buf, "SRDENT") || strstr(buf, "SLEEP"));
>  	return check_active ? active : !active;
>  }
>  
> @@ -138,5 +140,6 @@ bool psr_supported(int debugfs_fd)
>  
>  	igt_debugfs_simple_read(debugfs_fd, "i915_edp_psr_status", buf,
>  				sizeof(buf));
> -	return strstr(buf, "Sink_Support: yes\n");
> +	return strstr(buf, "Sink_Support: yes\n") ||
> +	       strstr(buf, "Sink support: yes");
>  }
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