From: José Roberto de Souza Date: Wed, 3 Oct 2018 20:50:28 +0000 (-0700) Subject: drm/i915/psr: Use WA to force HW tracking to exit PSR2 X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=66231d14e74a1107dd069293f792eb04538f5651;p=linux.git drm/i915/psr: Use WA to force HW tracking to exit PSR2 This WA also works fine for PSR2, triggering a selective update when possible. Acked-by: Dhinakaran Pandiyan Reviewed-by: Rodrigo Vivi Signed-off-by: José Roberto de Souza Signed-off-by: Dhinakaran Pandiyan Link: https://patchwork.freedesktop.org/patch/msgid/20181003205031.32474-4-jose.souza@intel.com --- diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c index 1c4beaca1c0f4..423cdf84059ce 100644 --- a/drivers/gpu/drm/i915/intel_psr.c +++ b/drivers/gpu/drm/i915/intel_psr.c @@ -1027,20 +1027,16 @@ void intel_psr_flush(struct drm_i915_private *dev_priv, /* By definition flush = invalidate + flush */ if (frontbuffer_bits) { - if (dev_priv->psr.psr2_enabled) { - intel_psr_exit(dev_priv); - } else { - /* - * Display WA #0884: all - * This documented WA for bxt can be safely applied - * broadly so we can force HW tracking to exit PSR - * instead of disabling and re-enabling. - * Workaround tells us to write 0 to CUR_SURFLIVE_A, - * but it makes more sense write to the current active - * pipe. - */ - I915_WRITE(CURSURFLIVE(pipe), 0); - } + /* + * Display WA #0884: all + * This documented WA for bxt can be safely applied + * broadly so we can force HW tracking to exit PSR + * instead of disabling and re-enabling. + * Workaround tells us to write 0 to CUR_SURFLIVE_A, + * but it makes more sense write to the current active + * pipe. + */ + I915_WRITE(CURSURFLIVE(pipe), 0); } if (!dev_priv->psr.active && !dev_priv->psr.busy_frontbuffer_bits)