releases/4.16.14/drm-psr-fix-missed-entry-in-psr-setup-time-table.patch

   1 From bdcc02cf1bb508fc700df7662f55058f651f2621 Mon Sep 17 00:00:00 2001
   2 From: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
   3 Date: Fri, 11 May 2018 12:51:42 -0700
   4 Subject: drm/psr: Fix missed entry in PSR setup time table.
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   8
   9 From: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
  10
  11 commit bdcc02cf1bb508fc700df7662f55058f651f2621 upstream.
  12
  13 Entry corresponding to 220 us setup time was missing. I am not aware of
  14 any specific bug this fixes, but this could potentially result in enabling
  15 PSR on a panel with a higher setup time requirement than supported by the
  16 hardware.
  17
  18 I verified the value is present in eDP spec versions 1.3, 1.4 and 1.4a.
  19
  20 Fixes: 6608804b3d7f ("drm/dp: Add drm_dp_psr_setup_time()")
  21 Cc: stable@vger.kernel.org
  22 Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
  23 Cc: Jose Roberto de Souza <jose.souza@intel.com>
  24 Cc: dri-devel@lists.freedesktop.org
  25 Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
  26 Reviewed-by: Tarun Vyas <tarun.vyas@intel.com>
  27 Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
  28 Signed-off-by: Jani Nikula <jani.nikula@intel.com>
  29 Link: https://patchwork.freedesktop.org/patch/msgid/20180511195145.3829-3-dhinakaran.pandiyan@intel.com
  30 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  31
  32 ---
  33  drivers/gpu/drm/drm_dp_helper.c |    1 +
  34  1 file changed, 1 insertion(+)
  35
  36 --- a/drivers/gpu/drm/drm_dp_helper.c
  37 +++ b/drivers/gpu/drm/drm_dp_helper.c
  38 @@ -1141,6 +1141,7 @@ int drm_dp_psr_setup_time(const u8 psr_c
  39         static const u16 psr_setup_time_us[] = {
  40                 PSR_SETUP_TIME(330),
  41                 PSR_SETUP_TIME(275),
  42 +               PSR_SETUP_TIME(220),
  43                 PSR_SETUP_TIME(165),
  44                 PSR_SETUP_TIME(110),
  45                 PSR_SETUP_TIME(55),