From: Douglas Anderson <dianders@chromium.org>
To: Andrzej Hajda <a.hajda@samsung.com>,
Neil Armstrong <narmstrong@baylibre.com>,
Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
Jonas Karlman <jonas@kwiboo.se>, Sam Ravnborg <sam@ravnborg.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
linux-arm-msm@vger.kernel.org,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Thierry Reding <treding@nvidia.com>,
Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>,
Lyude Paul <lyude@redhat.com>, Stephen Boyd <swboyd@chromium.org>,
Steev Klimaszewski <steev@kali.org>,
Linus W <linus.walleij@linaro.org>,
robdclark@chromium.org, dri-devel@lists.freedesktop.org,
Douglas Anderson <dianders@chromium.org>,
Daniel Vetter <daniel@ffwll.ch>, David Airlie <airlied@linux.ie>,
Jernej Skrabec <jernej.skrabec@gmail.com>,
Robert Foss <robert.foss@linaro.org>,
linux-kernel@vger.kernel.org
Subject: [PATCH v10 08/11] drm/bridge: ti-sn65dsi86: Add support for the DP AUX bus
Date: Fri, 11 Jun 2021 10:17:44 -0700 [thread overview]
Message-ID: <20210611101711.v10.8.Ib5fe0638da85800141ce141bb8e441c5f25438d4@changeid> (raw)
In-Reply-To: <20210611171747.1263039-1-dianders@chromium.org>
We want to provide our panel with access to the DP AUX channel. The
way to do this is to let our panel be a child of ours using the fancy
new DP AUX bus support.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Lyude Paul <lyude@redhat.com>
---
(no changes since v9)
Changes in v9:
- Rebased atop v9 ("Promote the AUX channel") patch.
Changes in v7:
- Patch to support for DP AUX bus on ti-sn65dsi86 new for v7.
drivers/gpu/drm/bridge/Kconfig | 1 +
drivers/gpu/drm/bridge/ti-sn65dsi86.c | 6 ++++++
2 files changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index 85b673613687..431b6e12a81f 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -303,6 +303,7 @@ config DRM_TI_SN65DSI86
select DRM_PANEL
select DRM_MIPI_DSI
select AUXILIARY_BUS
+ select DRM_DP_AUX_BUS
help
Texas Instruments SN65DSI86 DSI to eDP Bridge driver
diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
index 8e61005cf4ad..32bd35c98d95 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
@@ -23,6 +23,7 @@
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_bridge.h>
+#include <drm/drm_dp_aux_bus.h>
#include <drm/drm_dp_helper.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_of.h>
@@ -1426,12 +1427,17 @@ static int ti_sn_aux_probe(struct auxiliary_device *adev,
const struct auxiliary_device_id *id)
{
struct ti_sn65dsi86 *pdata = dev_get_drvdata(adev->dev.parent);
+ int ret;
pdata->aux.name = "ti-sn65dsi86-aux";
pdata->aux.dev = &adev->dev;
pdata->aux.transfer = ti_sn_aux_transfer;
drm_dp_aux_init(&pdata->aux);
+ ret = devm_of_dp_aux_populate_ep_devices(&pdata->aux);
+ if (ret)
+ return ret;
+
/*
* The eDP to MIPI bridge parts don't work until the AUX channel is
* setup so we don't add it in the main driver probe, we add it now.
--
2.32.0.272.g935e593368-goog
next prev parent reply other threads:[~2021-06-11 17:18 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-11 17:17 [PATCH v10 00/11] drm: Fix EDID reading on ti-sn65dsi86 by introducing the DP AUX bus Douglas Anderson
2021-06-11 17:17 ` [PATCH v10 01/11] dt-bindings: display: simple: List hpd properties in panel-simple Douglas Anderson
2021-06-11 17:17 ` [PATCH v10 02/11] dt-bindings: drm: Introduce the DP AUX bus Douglas Anderson
2021-06-11 17:17 ` [PATCH v10 03/11] dt-bindings: drm/bridge: ti-sn65dsi86: Add aux-bus child Douglas Anderson
2021-06-11 17:17 ` [PATCH v10 04/11] drm: Introduce the DP AUX bus Douglas Anderson
2021-06-11 17:17 ` [PATCH v10 05/11] drm/panel: panel-simple: Allow panel-simple be a DP AUX endpoint device Douglas Anderson
2021-06-11 17:17 ` [PATCH v10 06/11] drm/panel: panel-simple: Stash DP AUX bus; allow using it for DDC Douglas Anderson
2021-06-11 17:17 ` [PATCH v10 07/11] drm/bridge: ti-sn65dsi86: Promote the AUX channel to its own sub-dev Douglas Anderson
2021-06-11 17:17 ` Douglas Anderson [this message]
2021-06-11 17:17 ` [PATCH v10 09/11] drm/bridge: ti-sn65dsi86: Don't read EDID blob over DDC Douglas Anderson
2021-06-11 17:17 ` [PATCH v10 10/11] drm/bridge: ti-sn65dsi86: Improve probe errors with dev_err_probe() Douglas Anderson
2021-06-11 17:17 ` [PATCH v10 11/11] arm64: dts: qcom: sc7180-trogdor: Move panel under the bridge chip Douglas Anderson
2021-06-11 19:37 ` [PATCH v10 00/11] drm: Fix EDID reading on ti-sn65dsi86 by introducing the DP AUX bus Doug Anderson
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