On 09/27/2016 06:58 PM, Sean Paul wrote: > On Fri, Sep 23, 2016 at 10:06 AM, Tomeu Vizoso > <tomeu.vizoso at collabora.com> wrote: >> There's no point in enabling PSR when the panel doesn't support it. >> >> This also avoids a problem when PSR gets enabled when a CRTC is being >> disabled, because sometimes in that situation the DSP_HOLD_VALID_INTR >> interrupt on which we wait will never arrive. This was observed on >> RK3288 with a panel without PSR (veyron-jaq Chromebook). >> >> It's very easy to reproduce by running the kms_rmfb test in IGT a few >> times. >> >> Signed-off-by: Tomeu Vizoso <tomeu.vizoso at collabora.com> > > Thanks for digging into this. > > Reviewed-by: Sean Paul <seanpaul at chromium.org> > queued to drm-misc. Archit > > >> Cc: Sean Paul <seanpaul at chromium.org> >> Cc: Yakir Yang <ykk at rock-chips.com> >> Cc: Archit Taneja <architt at codeaurora.org> >> --- >> drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 3 +++ >> 1 file changed, 3 insertions(+) >> >> diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c >> index e83be157cc2a..8548e8271639 100644 >> --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c >> +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c >> @@ -85,6 +85,9 @@ static void analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled) >> struct rockchip_dp_device *dp = to_dp(encoder); >> unsigned long flags; >> >> + if (!analogix_dp_psr_supported(dp->dev)) >> + return; >> + >> dev_dbg(dp->dev, "%s PSR...\n", enabled ? "Entry" : "Exit"); >> >> spin_lock_irqsave(&dp->psr_lock, flags); >> -- >> 2.7.4 >> -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project
