From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> To: Doug Anderson <dianders@chromium.org>, Sankeerth Billakanti <quic_sbillaka@quicinc.com> Cc: dri-devel <dri-devel@lists.freedesktop.org>, linux-arm-msm <linux-arm-msm@vger.kernel.org>, freedreno <freedreno@lists.freedesktop.org>, LKML <linux-kernel@vger.kernel.org>, "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" <devicetree@vger.kernel.org>, Rob Clark <robdclark@gmail.com>, Sean Paul <seanpaul@chromium.org>, Stephen Boyd <swboyd@chromium.org>, quic_kalyant <quic_kalyant@quicinc.com>, "Abhinav Kumar (QUIC)" <quic_abhinavk@quicinc.com>, "Kuogee Hsieh (QUIC)" <quic_khsieh@quicinc.com>, Bjorn Andersson <bjorn.andersson@linaro.org>, Sean Paul <sean@poorly.run>, David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>, quic_vproddut <quic_vproddut@quicinc.com>, quic_aravindh@quicinc.com Subject: Re: [PATCH v6 5/8] drm/msm/dp: prevent multiple votes for dp resources Date: Fri, 8 Apr 2022 19:14:52 +0300 [thread overview] Message-ID: <94da2c97-2ad2-4575-bd73-d66ad989e17b@linaro.org> (raw) In-Reply-To: <CAD=FV=Wn-XypjRcw-D0VtBHZbuTz=RHiMq6RCHCa=CWmZM42nQ@mail.gmail.com> On 01/04/2022 02:23, Doug Anderson wrote: > Hi, > > On Wed, Mar 30, 2022 at 9:04 AM Sankeerth Billakanti > <quic_sbillaka@quicinc.com> wrote: >> >> The aux_bus support with the dp_display driver will enable the dp >> resources during msm_dp_modeset_init. The host_init has to return early >> if the core is already initialized to prevent putting an additional vote >> for the dp controller resources. >> >> Signed-off-by: Sankeerth Billakanti <quic_sbillaka@quicinc.com> >> --- >> drivers/gpu/drm/msm/dp/dp_display.c | 10 ++++++++++ >> 1 file changed, 10 insertions(+) > > I'm not a huge fan of this but I'll leave it up to Dmitry. In general > it feels like there should be _a_ place that enables these resources. > Checks like this make it feel like we just scattershot enabling > resources in a bunch of random places instead of coming up with the > design for enabling them in the right place. I'd prefer to see a check for eDP in dp_display_config_hpd(). Or even better to see that this function isn't called for eDP at all. > > In any case, if we do end up landing this patch, it sure feels like it > needs to move earlier in the patch series, right? This patch shouldn't > hurt even without the other patches in the series but if you apply the > earlier patches in the series without this one then you'll have a bug, > right? That means this needs to come earlier. > > -Doug -- With best wishes Dmitry
WARNING: multiple messages have this Message-ID (diff)
From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> To: Doug Anderson <dianders@chromium.org>, Sankeerth Billakanti <quic_sbillaka@quicinc.com> Cc: quic_kalyant <quic_kalyant@quicinc.com>, "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" <devicetree@vger.kernel.org>, Bjorn Andersson <bjorn.andersson@linaro.org>, "Abhinav Kumar \(QUIC\)" <quic_abhinavk@quicinc.com>, quic_vproddut <quic_vproddut@quicinc.com>, David Airlie <airlied@linux.ie>, linux-arm-msm <linux-arm-msm@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org>, dri-devel <dri-devel@lists.freedesktop.org>, Stephen Boyd <swboyd@chromium.org>, Sean Paul <sean@poorly.run>, Sean Paul <seanpaul@chromium.org>, quic_aravindh@quicinc.com, "Kuogee Hsieh \(QUIC\)" <quic_khsieh@quicinc.com>, freedreno <freedreno@lists.freedesktop.org> Subject: Re: [PATCH v6 5/8] drm/msm/dp: prevent multiple votes for dp resources Date: Fri, 8 Apr 2022 19:14:52 +0300 [thread overview] Message-ID: <94da2c97-2ad2-4575-bd73-d66ad989e17b@linaro.org> (raw) In-Reply-To: <CAD=FV=Wn-XypjRcw-D0VtBHZbuTz=RHiMq6RCHCa=CWmZM42nQ@mail.gmail.com> On 01/04/2022 02:23, Doug Anderson wrote: > Hi, > > On Wed, Mar 30, 2022 at 9:04 AM Sankeerth Billakanti > <quic_sbillaka@quicinc.com> wrote: >> >> The aux_bus support with the dp_display driver will enable the dp >> resources during msm_dp_modeset_init. The host_init has to return early >> if the core is already initialized to prevent putting an additional vote >> for the dp controller resources. >> >> Signed-off-by: Sankeerth Billakanti <quic_sbillaka@quicinc.com> >> --- >> drivers/gpu/drm/msm/dp/dp_display.c | 10 ++++++++++ >> 1 file changed, 10 insertions(+) > > I'm not a huge fan of this but I'll leave it up to Dmitry. In general > it feels like there should be _a_ place that enables these resources. > Checks like this make it feel like we just scattershot enabling > resources in a bunch of random places instead of coming up with the > design for enabling them in the right place. I'd prefer to see a check for eDP in dp_display_config_hpd(). Or even better to see that this function isn't called for eDP at all. > > In any case, if we do end up landing this patch, it sure feels like it > needs to move earlier in the patch series, right? This patch shouldn't > hurt even without the other patches in the series but if you apply the > earlier patches in the series without this one then you'll have a bug, > right? That means this needs to come earlier. > > -Doug -- With best wishes Dmitry
next prev parent reply other threads:[~2022-04-08 16:15 UTC|newest] Thread overview: 140+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-03-30 16:02 [PATCH v6 0/8] Add support for the eDP panel over aux_bus Sankeerth Billakanti 2022-03-30 16:02 ` Sankeerth Billakanti 2022-03-30 16:02 ` [PATCH v6 1/8] drm/msm/dp: Add eDP support via aux_bus Sankeerth Billakanti 2022-03-30 16:02 ` Sankeerth Billakanti 2022-03-30 23:19 ` Dmitry Baryshkov 2022-03-30 23:19 ` Dmitry Baryshkov 2022-03-31 0:33 ` Doug Anderson 2022-03-31 0:33 ` Doug Anderson 2022-03-31 23:22 ` Doug Anderson 2022-03-31 23:22 ` Doug Anderson 2022-04-02 10:37 ` Dmitry Baryshkov 2022-04-02 10:37 ` Dmitry Baryshkov 2022-04-02 17:06 ` Doug Anderson 2022-04-02 17:06 ` Doug Anderson 2022-04-02 20:26 ` Dmitry Baryshkov 2022-04-02 20:26 ` Dmitry Baryshkov 2022-04-04 20:53 ` Doug Anderson 2022-04-04 20:53 ` Doug Anderson 2022-04-05 12:53 ` Dmitry Baryshkov 2022-04-05 12:53 ` Dmitry Baryshkov 2022-04-05 17:02 ` Doug Anderson 2022-04-05 17:02 ` Doug Anderson 2022-04-05 17:36 ` Dmitry Baryshkov 2022-04-05 17:36 ` Dmitry Baryshkov 2022-04-05 18:11 ` Doug Anderson 2022-04-05 18:11 ` Doug Anderson 2022-04-07 14:19 ` Sankeerth Billakanti (QUIC) 2022-04-07 14:19 ` Sankeerth Billakanti (QUIC) 2022-04-07 17:07 ` Doug Anderson 2022-04-07 17:07 ` Doug Anderson 2022-04-07 20:11 ` Abhinav Kumar 2022-04-07 20:11 ` Abhinav Kumar 2022-04-07 20:47 ` Doug Anderson 2022-04-07 20:47 ` Doug Anderson 2022-04-07 22:03 ` Abhinav Kumar 2022-04-07 22:03 ` Abhinav Kumar 2022-04-07 23:34 ` Doug Anderson 2022-04-07 23:34 ` Doug Anderson 2022-04-07 23:46 ` Dmitry Baryshkov 2022-04-07 23:46 ` Dmitry Baryshkov 2022-04-08 0:21 ` Doug Anderson 2022-04-08 0:21 ` Doug Anderson 2022-04-08 12:19 ` Dmitry Baryshkov 2022-04-08 12:19 ` Dmitry Baryshkov 2022-04-08 13:43 ` Doug Anderson 2022-04-08 13:43 ` Doug Anderson 2022-04-08 14:58 ` Dmitry Baryshkov 2022-04-08 14:58 ` Dmitry Baryshkov 2022-04-08 17:23 ` Abhinav Kumar 2022-04-08 17:23 ` Abhinav Kumar 2022-04-07 23:35 ` Dmitry Baryshkov 2022-04-07 23:35 ` Dmitry Baryshkov 2022-04-08 0:20 ` Doug Anderson 2022-04-08 0:20 ` Doug Anderson 2022-04-08 12:13 ` Dmitry Baryshkov 2022-04-08 12:13 ` Dmitry Baryshkov 2022-04-08 13:56 ` Doug Anderson 2022-04-08 13:56 ` Doug Anderson 2022-04-08 14:17 ` Dmitry Baryshkov 2022-04-08 14:17 ` Dmitry Baryshkov 2022-03-30 16:02 ` [PATCH v6 2/8] drm/msm/dp: wait for hpd high before aux transaction Sankeerth Billakanti 2022-03-30 16:02 ` Sankeerth Billakanti 2022-03-31 23:22 ` Doug Anderson 2022-03-31 23:22 ` Doug Anderson 2022-04-04 12:43 ` Sankeerth Billakanti (QUIC) 2022-04-04 12:43 ` Sankeerth Billakanti (QUIC) 2022-03-30 16:02 ` [PATCH v6 3/8] drm/msm/dp: Support only IRQ_HPD and REPLUG interrupts for eDP Sankeerth Billakanti 2022-03-30 16:02 ` Sankeerth Billakanti 2022-03-31 23:22 ` Doug Anderson 2022-03-31 23:22 ` Doug Anderson 2022-04-04 12:56 ` Sankeerth Billakanti (QUIC) 2022-04-04 12:56 ` Sankeerth Billakanti (QUIC) 2022-03-30 16:02 ` [PATCH v6 4/8] drm/msm/dp: avoid handling masked interrupts Sankeerth Billakanti 2022-03-30 16:02 ` Sankeerth Billakanti 2022-03-30 22:16 ` Dmitry Baryshkov 2022-03-30 22:16 ` Dmitry Baryshkov 2022-03-31 5:53 ` Sankeerth Billakanti (QUIC) 2022-03-31 5:53 ` Sankeerth Billakanti (QUIC) 2022-03-31 10:10 ` Dmitry Baryshkov 2022-03-31 10:10 ` Dmitry Baryshkov 2022-03-31 11:04 ` Sankeerth Billakanti 2022-03-31 11:04 ` Sankeerth Billakanti 2022-03-31 11:06 ` Dmitry Baryshkov 2022-03-31 11:06 ` Dmitry Baryshkov 2022-04-04 17:56 ` Sankeerth Billakanti (QUIC) 2022-04-04 17:56 ` Sankeerth Billakanti (QUIC) 2022-03-30 16:02 ` [PATCH v6 5/8] drm/msm/dp: prevent multiple votes for dp resources Sankeerth Billakanti 2022-03-30 16:02 ` Sankeerth Billakanti 2022-03-31 23:23 ` Doug Anderson 2022-03-31 23:23 ` Doug Anderson 2022-04-08 16:14 ` Dmitry Baryshkov [this message] 2022-04-08 16:14 ` Dmitry Baryshkov 2022-04-08 17:12 ` Sankeerth Billakanti 2022-04-08 17:12 ` Sankeerth Billakanti 2022-04-08 18:02 ` Dmitry Baryshkov 2022-04-08 18:02 ` Dmitry Baryshkov 2022-03-30 16:02 ` [PATCH v6 6/8] drm/msm/dp: remove unnecessary delay during boot Sankeerth Billakanti 2022-03-30 16:02 ` Sankeerth Billakanti 2022-03-31 23:23 ` Doug Anderson 2022-03-31 23:23 ` Doug Anderson 2022-04-04 13:52 ` Sankeerth Billakanti (QUIC) 2022-04-04 13:52 ` Sankeerth Billakanti (QUIC) 2022-04-04 21:13 ` Dmitry Baryshkov 2022-04-04 21:13 ` Dmitry Baryshkov 2022-04-07 12:40 ` Sankeerth Billakanti (QUIC) 2022-04-07 12:40 ` Sankeerth Billakanti (QUIC) 2022-03-30 16:02 ` [PATCH v6 7/8] drm/msm/dp: Support edp/dp without hpd Sankeerth Billakanti 2022-03-30 16:02 ` Sankeerth Billakanti 2022-03-31 23:23 ` Doug Anderson 2022-03-31 23:23 ` Doug Anderson 2022-04-04 18:32 ` Sankeerth Billakanti (QUIC) 2022-04-04 18:32 ` Sankeerth Billakanti (QUIC) 2022-04-04 21:15 ` Dmitry Baryshkov 2022-04-04 21:15 ` Dmitry Baryshkov 2022-04-07 12:41 ` Sankeerth Billakanti (QUIC) 2022-04-07 12:41 ` Sankeerth Billakanti (QUIC) 2022-03-30 16:02 ` [PATCH v6 8/8] drm/msm/dp: Handle eDP mode_valid differently from dp Sankeerth Billakanti 2022-03-30 16:02 ` Sankeerth Billakanti 2022-03-30 22:08 ` Dmitry Baryshkov 2022-03-30 22:08 ` Dmitry Baryshkov 2022-03-31 6:02 ` Sankeerth Billakanti (QUIC) 2022-03-31 6:02 ` Sankeerth Billakanti (QUIC) 2022-03-31 23:24 ` Doug Anderson 2022-03-31 23:24 ` Doug Anderson 2022-04-04 18:20 ` Sankeerth Billakanti (QUIC) 2022-04-04 18:20 ` Sankeerth Billakanti (QUIC) 2022-04-04 21:29 ` Dmitry Baryshkov 2022-04-04 21:29 ` Dmitry Baryshkov 2022-04-07 14:05 ` Sankeerth Billakanti (QUIC) 2022-04-07 14:05 ` Sankeerth Billakanti (QUIC) 2022-04-08 12:08 ` Dmitry Baryshkov 2022-04-08 12:08 ` Dmitry Baryshkov 2022-04-08 15:50 ` Sankeerth Billakanti 2022-04-08 15:50 ` Sankeerth Billakanti 2022-04-08 16:47 ` Dmitry Baryshkov 2022-04-08 16:47 ` Dmitry Baryshkov 2022-04-08 17:38 ` Sankeerth Billakanti 2022-04-08 17:38 ` Sankeerth Billakanti 2022-04-08 18:06 ` Dmitry Baryshkov 2022-04-08 18:06 ` Dmitry Baryshkov
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