The DisplayPort controller's hot-plug mechanism is based on pinmuxing a
physical signal no a GPIO pin into the controller. This is not always
possible, either because there aren't dedicated GPIOs available or
because the hot-plug signal is a virtual notification, in cases such as
USB Type-C.
For t
The DisplayPort controller's internal HPD interrupt handling is used for
cases where the HPD signal is connected to a GPIO which is pinmuxed into
the DisplayPort controller.
Most of the logic for enabling and disabling the HPD-related interrupts
is conditioned on the presence of an EDP panel, but
The Qualcomm SDM845 platform has a single DisplayPort controller, with
the same design as SC7180, so add support for this by reusing the SC7180
definition.
Signed-off-by: Bjorn Andersson
---
drivers/gpu/drm/msm/dp/dp_display.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/m
Introduce support for DisplayPort on SDM845 and SC8280XP, followed by
introduction of drm_bridge based HPD handling.
The version of these patches are restarted, as the previous
drm_connector_oob_hotplug_event()-based approach was abandoned and this only
barely resembles that effort.
In this effor
In the SC8280XP platform there are two identical MDSS instances, each
with the same set of DisplayPort instances, at different addresses.
By not relying on the index to define the instance id it's possible to
describe them both in the same table and hence have a single compatible.
While at it, fl
The SC8280XP platform has four DisplayPort controllers, per MDSS
instance, all with widebus support.
The first two are defined to be DisplayPort only, while the latter pair
(of each instance) can be either DisplayPort or Embedded DisplayPort.
The two sets are tied to the possible compatibels.
Sig
Most instances where HPD interrupts are masked and unmasked are guareded
by the presence of an EDP panel being connected, but not all. Extend
this to cover the last few places, as HPD interrupt handling is not used
for the EDP case.
Signed-off-by: Bjorn Andersson
---
drivers/gpu/drm/msm/dp/dp_di
Add compatibles for the DisplayPort and Embedded DisplayPort blocks in
Qualcomm SDM845 and SC8280XP platforms.
Signed-off-by: Bjorn Andersson
---
.../devicetree/bindings/display/msm/dp-controller.yaml | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Documentation/devicetree/binding
Quoting Kuogee Hsieh (2022-08-09 13:44:50)
> dp_bridge_disable() is the first step toward tearing down main link.
> Its major function is to start transmitting idle pattern to replace
> video stream. This patch will check hpd_state to make sure main link
> is enabled before commit changes of main l
On 8/9/2022 1:44 PM, Kuogee Hsieh wrote:
dp_bridge_disable() is the first step toward tearing down main link.
Its major function is to start transmitting idle pattern to replace
video stream. This patch will check hpd_state to make sure main link
is enabled before commit changes of main link's
Hi Laurent
Thanks for the response.
On 8/9/2022 12:40 PM, Laurent Pinchart wrote:
Hi Abhinav,
Thank you for the patch.
On Mon, Aug 08, 2022 at 05:35:30PM -0700, Abhinav Kumar wrote:
adv7533 bridge tries to dynamically switch lanes based on the
mode by detaching and attaching the mipi dsi dev
dp_bridge_disable() is the first step toward tearing down main link.
Its major function is to start transmitting idle pattern to replace
video stream. This patch will check hpd_state to make sure main link
is enabled before commit changes of main link's configuration to
push idle pattern out to avo
On Sat 30 Jul 04:17 CDT 2022, Akhil P Oommen wrote:
>
> Some clients like adreno gpu driver would like to ensure that its gdsc
> is collapsed at hardware during a gpu reset sequence. This is because it
> has a votable gdsc which could be ON due to a vote from another subsystem
> like tz, hyp etc
Hi Abhinav,
Thank you for the patch.
On Mon, Aug 08, 2022 at 05:35:30PM -0700, Abhinav Kumar wrote:
> adv7533 bridge tries to dynamically switch lanes based on the
> mode by detaching and attaching the mipi dsi device.
>
> This approach is incorrect because as per the DSI spec the
> number of la
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