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From: Douglas Anderson <dianders@chromium.org>
To: Jiri Kosina <jikos@kernel.org>,
	Benjamin Tissoires <benjamin.tissoires@redhat.com>,
	Bjorn Andersson <andersson@kernel.org>,
	Konrad Dybcio <konrad.dybcio@linaro.org>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Neil Armstrong <neil.armstrong@linaro.org>,
	Sam Ravnborg <sam@ravnborg.org>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>
Cc: devicetree@vger.kernel.org, cros-qcom-dts-watchers@chromium.org,
	linux-arm-msm@vger.kernel.org,
	yangcong5@huaqin.corp-partner.google.com,
	Dmitry Torokhov <dmitry.torokhov@gmail.com>,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	Douglas Anderson <dianders@chromium.org>,
	linux-input@vger.kernel.org, hsinyi@google.com
Subject: [PATCH 1/9] dt-bindings: HID: i2c-hid: Add "panel" property to i2c-hid backed panels
Date: Tue, 23 May 2023 12:27:55 -0700	[thread overview]
Message-ID: <20230523122802.1.Id68e30343bb1e11470582a9078b086176cfec46b@changeid> (raw)
In-Reply-To: <20230523193017.4109557-1-dianders@chromium.org>

As talked about in the patch ("drm/panel: Add a way for other devices
to follow panel state"), touchscreens that are connected to panels are
generally expected to be power sequenced together with the panel
they're attached to. Today, nothing provides information allowing you
to find out that a touchscreen is connected to a panel. Let's add a
phandle for this.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
---

 Documentation/devicetree/bindings/input/elan,ekth6915.yaml  | 6 ++++++
 Documentation/devicetree/bindings/input/goodix,gt7375p.yaml | 6 ++++++
 Documentation/devicetree/bindings/input/hid-over-i2c.yaml   | 6 ++++++
 3 files changed, 18 insertions(+)

diff --git a/Documentation/devicetree/bindings/input/elan,ekth6915.yaml b/Documentation/devicetree/bindings/input/elan,ekth6915.yaml
index 05e6f2df604c..d55b03bd3ec4 100644
--- a/Documentation/devicetree/bindings/input/elan,ekth6915.yaml
+++ b/Documentation/devicetree/bindings/input/elan,ekth6915.yaml
@@ -24,6 +24,12 @@ properties:
   interrupts:
     maxItems: 1
 
+  panel:
+    description: If this is a touchscreen, the panel it's connected to. This
+      indicates that the panel and touchscreen are expected to be power
+      sequenced together.
+    $ref: /schemas/types.yaml#/definitions/phandle
+
   reset-gpios:
     description: Reset GPIO; not all touchscreens using eKTH6915 hook this up.
 
diff --git a/Documentation/devicetree/bindings/input/goodix,gt7375p.yaml b/Documentation/devicetree/bindings/input/goodix,gt7375p.yaml
index ce18d7dadae2..a5cd8dafd450 100644
--- a/Documentation/devicetree/bindings/input/goodix,gt7375p.yaml
+++ b/Documentation/devicetree/bindings/input/goodix,gt7375p.yaml
@@ -30,6 +30,12 @@ properties:
   interrupts:
     maxItems: 1
 
+  panel:
+    description: If this is a touchscreen, the panel it's connected to. This
+      indicates that the panel and touchscreen are expected to be power
+      sequenced together.
+    $ref: /schemas/types.yaml#/definitions/phandle
+
   reset-gpios:
     true
 
diff --git a/Documentation/devicetree/bindings/input/hid-over-i2c.yaml b/Documentation/devicetree/bindings/input/hid-over-i2c.yaml
index 7156b08f7645..c7ea6c148838 100644
--- a/Documentation/devicetree/bindings/input/hid-over-i2c.yaml
+++ b/Documentation/devicetree/bindings/input/hid-over-i2c.yaml
@@ -44,6 +44,12 @@ properties:
     description: HID descriptor address
     $ref: /schemas/types.yaml#/definitions/uint32
 
+  panel:
+    description: If this is a touchscreen, the panel it's connected to. This
+      indicates that the panel and touchscreen are expected to be power
+      sequenced together.
+    $ref: /schemas/types.yaml#/definitions/phandle
+
   post-power-on-delay-ms:
     description: Time required by the device after enabling its regulators
       or powering it on, before it is ready for communication.
-- 
2.40.1.698.g37aff9b760-goog


WARNING: multiple messages have this Message-ID (diff)
From: Douglas Anderson <dianders@chromium.org>
To: Jiri Kosina <jikos@kernel.org>,
	Benjamin Tissoires <benjamin.tissoires@redhat.com>,
	Bjorn Andersson <andersson@kernel.org>,
	Konrad Dybcio <konrad.dybcio@linaro.org>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Neil Armstrong <neil.armstrong@linaro.org>,
	Sam Ravnborg <sam@ravnborg.org>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>
Cc: dri-devel@lists.freedesktop.org, linux-input@vger.kernel.org,
	Dmitry Torokhov <dmitry.torokhov@gmail.com>,
	hsinyi@google.com, devicetree@vger.kernel.org,
	yangcong5@huaqin.corp-partner.google.com,
	linux-kernel@vger.kernel.org, Daniel Vetter <daniel@ffwll.ch>,
	linux-arm-msm@vger.kernel.org,
	cros-qcom-dts-watchers@chromium.org,
	Douglas Anderson <dianders@chromium.org>
Subject: [PATCH 1/9] dt-bindings: HID: i2c-hid: Add "panel" property to i2c-hid backed panels
Date: Tue, 23 May 2023 12:27:55 -0700	[thread overview]
Message-ID: <20230523122802.1.Id68e30343bb1e11470582a9078b086176cfec46b@changeid> (raw)
In-Reply-To: <20230523193017.4109557-1-dianders@chromium.org>

As talked about in the patch ("drm/panel: Add a way for other devices
to follow panel state"), touchscreens that are connected to panels are
generally expected to be power sequenced together with the panel
they're attached to. Today, nothing provides information allowing you
to find out that a touchscreen is connected to a panel. Let's add a
phandle for this.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
---

 Documentation/devicetree/bindings/input/elan,ekth6915.yaml  | 6 ++++++
 Documentation/devicetree/bindings/input/goodix,gt7375p.yaml | 6 ++++++
 Documentation/devicetree/bindings/input/hid-over-i2c.yaml   | 6 ++++++
 3 files changed, 18 insertions(+)

diff --git a/Documentation/devicetree/bindings/input/elan,ekth6915.yaml b/Documentation/devicetree/bindings/input/elan,ekth6915.yaml
index 05e6f2df604c..d55b03bd3ec4 100644
--- a/Documentation/devicetree/bindings/input/elan,ekth6915.yaml
+++ b/Documentation/devicetree/bindings/input/elan,ekth6915.yaml
@@ -24,6 +24,12 @@ properties:
   interrupts:
     maxItems: 1
 
+  panel:
+    description: If this is a touchscreen, the panel it's connected to. This
+      indicates that the panel and touchscreen are expected to be power
+      sequenced together.
+    $ref: /schemas/types.yaml#/definitions/phandle
+
   reset-gpios:
     description: Reset GPIO; not all touchscreens using eKTH6915 hook this up.
 
diff --git a/Documentation/devicetree/bindings/input/goodix,gt7375p.yaml b/Documentation/devicetree/bindings/input/goodix,gt7375p.yaml
index ce18d7dadae2..a5cd8dafd450 100644
--- a/Documentation/devicetree/bindings/input/goodix,gt7375p.yaml
+++ b/Documentation/devicetree/bindings/input/goodix,gt7375p.yaml
@@ -30,6 +30,12 @@ properties:
   interrupts:
     maxItems: 1
 
+  panel:
+    description: If this is a touchscreen, the panel it's connected to. This
+      indicates that the panel and touchscreen are expected to be power
+      sequenced together.
+    $ref: /schemas/types.yaml#/definitions/phandle
+
   reset-gpios:
     true
 
diff --git a/Documentation/devicetree/bindings/input/hid-over-i2c.yaml b/Documentation/devicetree/bindings/input/hid-over-i2c.yaml
index 7156b08f7645..c7ea6c148838 100644
--- a/Documentation/devicetree/bindings/input/hid-over-i2c.yaml
+++ b/Documentation/devicetree/bindings/input/hid-over-i2c.yaml
@@ -44,6 +44,12 @@ properties:
     description: HID descriptor address
     $ref: /schemas/types.yaml#/definitions/uint32
 
+  panel:
+    description: If this is a touchscreen, the panel it's connected to. This
+      indicates that the panel and touchscreen are expected to be power
+      sequenced together.
+    $ref: /schemas/types.yaml#/definitions/phandle
+
   post-power-on-delay-ms:
     description: Time required by the device after enabling its regulators
       or powering it on, before it is ready for communication.
-- 
2.40.1.698.g37aff9b760-goog


  reply	other threads:[~2023-05-23 19:31 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-23 19:27 [PATCH 0/9] drm/panel and i2c-hid: Allow panels and touchscreens to power sequence together Douglas Anderson
2023-05-23 19:27 ` Douglas Anderson
2023-05-23 19:27 ` Douglas Anderson [this message]
2023-05-23 19:27   ` [PATCH 1/9] dt-bindings: HID: i2c-hid: Add "panel" property to i2c-hid backed panels Douglas Anderson
2023-05-30 15:34   ` Krzysztof Kozlowski
2023-05-30 15:34     ` Krzysztof Kozlowski
2023-05-30 16:52     ` Doug Anderson
2023-05-30 16:52       ` Doug Anderson
2023-05-23 19:27 ` [PATCH 2/9] drm/panel: Check for already prepared/enabled in drm_panel Douglas Anderson
2023-05-23 19:27   ` Douglas Anderson
2023-05-24  9:52   ` Neil Armstrong
2023-05-24  9:52     ` Neil Armstrong
2023-05-24 16:57     ` Doug Anderson
2023-05-24 16:57       ` Doug Anderson
2023-05-24 16:19   ` Chris Morgan
2023-05-24 16:19     ` Chris Morgan
2023-05-24 17:04     ` Doug Anderson
2023-05-24 17:04       ` Doug Anderson
2023-05-23 19:27 ` [PATCH 3/9] drm/panel: Add a way for other devices to follow panel state Douglas Anderson
2023-05-23 19:27   ` Douglas Anderson
2023-05-23 19:27 ` [PATCH 4/9] HID: i2c-hid: Switch to SYSTEM_SLEEP_PM_OPS() Douglas Anderson
2023-05-23 19:27   ` Douglas Anderson
2023-05-23 19:27 ` [PATCH 5/9] HID: i2c-hid: Rearrange probe() to power things up later Douglas Anderson
2023-05-23 19:27   ` Douglas Anderson
2023-05-23 23:27   ` kernel test robot
2023-05-23 23:27     ` kernel test robot
2023-05-24 13:01   ` kernel test robot
2023-05-24 13:01     ` kernel test robot
2023-05-23 19:28 ` [PATCH 6/9] HID: i2c-hid: Make suspend and resume into helper functions Douglas Anderson
2023-05-23 19:28   ` Douglas Anderson
2023-05-23 19:28 ` [PATCH 7/9] HID: i2c-hid: Support being a panel follower Douglas Anderson
2023-05-23 19:28   ` Douglas Anderson
2023-05-24  0:28   ` kernel test robot
2023-05-24  0:28     ` kernel test robot
2023-05-24 15:37   ` kernel test robot
2023-05-24 15:37     ` kernel test robot
2023-05-24 17:29   ` Doug Anderson
2023-05-24 17:29     ` Doug Anderson
2023-05-23 19:28 ` [PATCH 8/9] HID: i2c-hid: Do panel follower work on the system_wq Douglas Anderson
2023-05-23 19:28   ` Douglas Anderson
2023-05-24  1:36   ` kernel test robot
2023-05-24  1:36     ` kernel test robot
2023-05-24 18:56   ` kernel test robot
2023-05-24 18:56     ` kernel test robot
2023-05-23 19:28 ` [PATCH 9/9] arm64: dts: qcom: sc7180: Link trogdor touchscreens to the panels Douglas Anderson
2023-05-23 19:28   ` Douglas Anderson
2023-05-23 21:39 ` [PATCH 0/9] drm/panel and i2c-hid: Allow panels and touchscreens to power sequence together Dmitry Torokhov
2023-05-23 21:39   ` Dmitry Torokhov
2023-05-23 23:52   ` Doug Anderson
2023-05-23 23:52     ` Doug Anderson
2023-05-26 19:29 ` Konrad Dybcio
2023-05-26 19:29   ` Konrad Dybcio

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