diff mbox series

[v4,11/11] arm64: dts: qcom: sc7180: Link trogdor touchscreens to the panels

Message ID 20230727101636.v4.11.Ia06c340e3482563e6bfd3106ecd0d3139f173ca4@changeid
State New
Headers show
Series drm/panel and i2c-hid: Allow panels and touchscreens to power sequence together | expand

Commit Message

Doug Anderson July 27, 2023, 5:16 p.m. UTC 
Let's provide the proper link from the touchscreen to the panel on
trogdor devices where the touchscreen support it. This allows the OS
to power sequence the touchscreen more properly.

For the most part, this is just expected to marginally improve power
consumption while the screen is off. However, in at least one trogdor
model (wormdingler) it's suspected that this will fix some behavorial
corner cases when the panel power cycles (like for a modeset) without
the touchscreen power cycling.

NOTE: some trogdor variants use touchscreens that don't (yet) support
linking the touchscreen and the panel. Those variants are left alone.

Reviewed-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
---

(no changes since v1)

 arch/arm64/boot/dts/qcom/sc7180-trogdor-coachz.dtsi        | 1 +
 arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi      | 1 +
 arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor.dtsi         | 1 +
 arch/arm64/boot/dts/qcom/sc7180-trogdor-pompom.dtsi        | 1 +
 arch/arm64/boot/dts/qcom/sc7180-trogdor-quackingstick.dtsi | 1 +
 arch/arm64/boot/dts/qcom/sc7180-trogdor-wormdingler.dtsi   | 1 +
 6 files changed, 6 insertions(+)

Comments

Doug Anderson Sept. 14, 2023, 11:42 p.m. UTC | #1 
Hi,

On Thu, Jul 27, 2023 at 10:19 AM Douglas Anderson <dianders@chromium.org> wrote:
>
> Let's provide the proper link from the touchscreen to the panel on
> trogdor devices where the touchscreen support it. This allows the OS
> to power sequence the touchscreen more properly.
>
> For the most part, this is just expected to marginally improve power
> consumption while the screen is off. However, in at least one trogdor
> model (wormdingler) it's suspected that this will fix some behavorial
> corner cases when the panel power cycles (like for a modeset) without
> the touchscreen power cycling.
>
> NOTE: some trogdor variants use touchscreens that don't (yet) support
> linking the touchscreen and the panel. Those variants are left alone.
>
> Reviewed-by: Maxime Ripard <mripard@kernel.org>
> Signed-off-by: Douglas Anderson <dianders@chromium.org>
> ---
>
> (no changes since v1)
>
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-coachz.dtsi        | 1 +
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi      | 1 +
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor.dtsi         | 1 +
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-pompom.dtsi        | 1 +
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-quackingstick.dtsi | 1 +
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-wormdingler.dtsi   | 1 +
>  6 files changed, 6 insertions(+)

FWIW, this old patch could land any time. All the earlier patches in
the series have landed.

-Doug
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-coachz.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor-coachz.dtsi
index 8b8ea8af165d..b4f328d3e1f6 100644
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor-coachz.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-coachz.dtsi
@@ -104,6 +104,7 @@  ap_ts: touchscreen@5d {
 		interrupt-parent = <&tlmm>;
 		interrupts = <9 IRQ_TYPE_LEVEL_LOW>;
 
+		panel = <&panel>;
 		reset-gpios = <&tlmm 8 GPIO_ACTIVE_LOW>;
 
 		vdd-supply = <&pp3300_ts>;
diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi
index b3ba23a88a0b..88aeb415bd5b 100644
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi
@@ -116,6 +116,7 @@  ap_ts: touchscreen@14 {
 		interrupt-parent = <&tlmm>;
 		interrupts = <9 IRQ_TYPE_LEVEL_LOW>;
 
+		panel = <&panel>;
 		reset-gpios = <&tlmm 8 GPIO_ACTIVE_LOW>;
 
 		vdd-supply = <&pp3300_touch>;
diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor.dtsi
index 269007d73162..c65f18ea3e5c 100644
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor.dtsi
@@ -43,6 +43,7 @@  ap_ts: touchscreen@10 {
 		interrupt-parent = <&tlmm>;
 		interrupts = <9 IRQ_TYPE_LEVEL_LOW>;
 
+		panel = <&panel>;
 		post-power-on-delay-ms = <20>;
 		hid-descr-addr = <0x0001>;
 
diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-pompom.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor-pompom.dtsi
index 6c5287bd27d6..d2aafd1ea672 100644
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor-pompom.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-pompom.dtsi
@@ -102,6 +102,7 @@  ap_ts: touchscreen@10 {
 		interrupt-parent = <&tlmm>;
 		interrupts = <9 IRQ_TYPE_LEVEL_LOW>;
 
+		panel = <&panel>;
 		post-power-on-delay-ms = <20>;
 		hid-descr-addr = <0x0001>;
 
diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-quackingstick.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor-quackingstick.dtsi
index 62ab6427dd65..e5d6a7898f8c 100644
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor-quackingstick.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-quackingstick.dtsi
@@ -69,6 +69,7 @@  ap_ts: touchscreen@10 {
 		interrupt-parent = <&tlmm>;
 		interrupts = <9 IRQ_TYPE_LEVEL_LOW>;
 
+		panel = <&panel>;
 		post-power-on-delay-ms = <20>;
 		hid-descr-addr = <0x0001>;
 
diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-wormdingler.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor-wormdingler.dtsi
index 2efa8a4bcda6..0e2b4d06b490 100644
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor-wormdingler.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-wormdingler.dtsi
@@ -123,6 +123,7 @@  ap_ts: touchscreen@1 {
 		interrupt-parent = <&tlmm>;
 		interrupts = <9 IRQ_TYPE_EDGE_FALLING>;
 
+		panel = <&panel>;
 		post-power-on-delay-ms = <70>;
 		hid-descr-addr = <0x0001>;