From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
To: Vinod Koul <vkoul@kernel.org>, Rob Clark <robdclark@gmail.com>
Cc: linux-arm-msm@vger.kernel.org,
Bjorn Andersson <bjorn.andersson@linaro.org>,
David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
Jonathan Marek <jonathan@marek.ca>,
Abhinav Kumar <abhinavk@codeaurora.org>,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
freedreno@lists.freedesktop.org
Subject: Re: [RFC PATCH 11/13] drm/msm/disp/dpu1: Add support for DSC in topology
Date: Fri, 28 May 2021 13:39:29 +0300 [thread overview]
Message-ID: <06ffdec5-8b12-c077-0c51-6ea9100b96a4@linaro.org> (raw)
In-Reply-To: <20210521124946.3617862-16-vkoul@kernel.org>
On 21/05/2021 15:49, Vinod Koul wrote:
> For DSC to work we typically need a 2,2,1 configuration. This should
> suffice for resolutions upto 4k. For more resolutions like 8k this won't
> work.
>
> Furthermore, we can use 1 DSC encoder in lesser resulutions, but that is
> not power efficient according to Abhinav, so it is recommended to always
> use 2 encoders.
Not power efficient because the second DSC would also be powered on or
because single DSC enc would consume more power than two DSCs?
>
> So for now we blindly create 2,2,1 topology when DSC is enabled
>
> Co-developed-by: Abhinav Kumar <abhinavk@codeaurora.org>
> Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
> Signed-off-by: Vinod Koul <vkoul@kernel.org>
> ---
> drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> index 18cb1274a8bb..bffb40085c67 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> @@ -609,8 +609,22 @@ static struct msm_display_topology dpu_encoder_get_topology(
> topology.num_enc = 0;
> topology.num_intf = intf_count;
>
> + drm_enc = &dpu_enc->base;
> + priv = drm_enc->dev->dev_private;
> + if (priv && priv->dsc) {
> + /* In case of Display Stream Compression DSC, we would use
> + * 2 encoders, 2 line mixers and 1 interface
> + * this is power optimal and can drive upto (including) 4k
> + * screens
> + */
> + topology.num_enc = 2;
> + topology.num_intf = 1;
> + topology.num_lm = 2;
> + }
> +
> return topology;
> }
> +
> static int dpu_encoder_virt_atomic_check(
> struct drm_encoder *drm_enc,
> struct drm_crtc_state *crtc_state,
>
--
With best wishes
Dmitry
next prev parent reply other threads:[~2021-05-28 10:39 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-21 12:49 [RFC PATCH 00/13] drm/msm: Add Display Stream Compression Support Vinod Koul
2021-05-21 12:49 ` [RFC PATCH 01/13] drm/dsc: Add dsc pps header init function Vinod Koul
2021-05-21 15:29 ` Daniel Vetter
2021-05-24 7:26 ` Vinod Koul
2021-05-21 12:49 ` [RFC PATCH 02/13] dt-bindings: msm/dsi: Document Display Stream Compression (DSC) parameters Vinod Koul
2021-05-21 13:18 ` Rob Herring
2021-05-21 13:23 ` Vinod Koul
2021-05-21 14:42 ` Bjorn Andersson
2021-05-24 7:30 ` Vinod Koul
2021-05-24 15:08 ` Bjorn Andersson
2021-05-26 5:32 ` Vinod Koul
2021-05-21 12:49 ` [RFC PATCH 03/13] drm/msm/disp/dpu1: Add support for DSC Vinod Koul
2021-05-27 23:49 ` Dmitry Baryshkov
2021-05-21 12:49 ` [RFC PATCH 03/13] drm/msm/dsi: add support for dsc data Vinod Koul
2021-05-27 23:45 ` Dmitry Baryshkov
2021-06-02 11:06 ` Vinod Koul
2021-05-28 10:29 ` Dmitry Baryshkov
2021-06-02 11:17 ` Vinod Koul
2021-05-21 12:49 ` [RFC PATCH 04/13] drm/msm/disp/dpu1: Add support for DSC in pingpong block Vinod Koul
2021-05-21 12:49 ` [RFC PATCH 04/13] drm/msm/disp/dpu1: Add support for DSC Vinod Koul
2021-05-28 10:31 ` Dmitry Baryshkov
2021-05-21 12:49 ` [RFC PATCH 05/13] drm/msm/disp/dpu1: Add support for DSC in pingpong block Vinod Koul
2021-05-21 12:49 ` [RFC PATCH 05/13] drm/msm/dsi: add support for dsc data Vinod Koul
2021-05-21 12:49 ` [RFC PATCH 06/13] drm/msm/disp/dpu1: Add DSC support in RM Vinod Koul
2021-05-28 10:33 ` Dmitry Baryshkov
2021-05-21 12:49 ` [RFC PATCH 07/13] drm/msm/disp/dpu1: Add DSC for SDM845 to hw_catalog Vinod Koul
2021-05-21 12:49 ` [RFC PATCH 08/13] drm/msm/disp/dpu1: Add DSC support in hw_ctl Vinod Koul
2021-05-21 12:49 ` [RFC PATCH 09/13] drm/msm/disp/dpu1: Don't use DSC with mode_3d Vinod Koul
2021-05-28 10:36 ` Dmitry Baryshkov
2021-05-21 12:49 ` [RFC PATCH 09/13] drm/msm/disp/dpu1: Dont " Vinod Koul
2021-05-21 12:49 ` [RFC PATCH 10/13] drm/msm/disp/dpu1: Add support for DSC in encoder Vinod Koul
2021-05-21 12:49 ` [RFC PATCH 11/13] drm/msm/disp/dpu1: Add support for DSC in topology Vinod Koul
2021-05-28 10:39 ` Dmitry Baryshkov [this message]
2021-05-28 22:23 ` abhinavk
2021-05-28 22:29 ` Dmitry Baryshkov
2021-05-21 12:49 ` [RFC PATCH 12/13] drm/msm/dsi: Add support for DSC configuration Vinod Koul
2021-05-21 12:49 ` [RFC PATCH 13/13] drm/msm/dsi: Pass DSC params to drm_panel Vinod Koul
2021-05-21 14:09 ` [Freedreno] [RFC PATCH 00/13] drm/msm: Add Display Stream Compression Support Jeffrey Hugo
2021-05-26 5:46 ` Vinod Koul
2021-05-26 15:00 ` Jeffrey Hugo
2021-05-27 23:30 ` Rob Clark
2021-06-02 11:01 ` Vinod Koul
2021-06-03 23:40 ` abhinavk
2021-06-17 8:06 ` Vinod Koul
2021-06-04 2:36 ` Rob Clark
2021-06-02 10:56 ` Vinod Koul
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=06ffdec5-8b12-c077-0c51-6ea9100b96a4@linaro.org \
--to=dmitry.baryshkov@linaro.org \
--cc=abhinavk@codeaurora.org \
--cc=airlied@linux.ie \
--cc=bjorn.andersson@linaro.org \
--cc=daniel@ffwll.ch \
--cc=dri-devel@lists.freedesktop.org \
--cc=freedreno@lists.freedesktop.org \
--cc=jonathan@marek.ca \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=robdclark@gmail.com \
--cc=vkoul@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).