On 23.05.2023 21:27, Douglas Anderson wrote: > > The big motivation for this patch series is mostly described in the patch > ("drm/panel: Add a way for other devices to follow panel state"), but to > quickly summarize here: for touchscreens that are connected to a panel we > need the ability to power sequence the two device together. This is not a > new need, but so far we've managed to get by through a combination of > inefficiency, added costs, or perhaps just a little bit of brokenness. > It's time to do better. This patch series allows us to do better. Panels with integrated touchscreens have been shipping in mainstream devices since at least 2016. Thanks a lot for looking into this! Konrad > > Assuming that people think this patch series looks OK, we'll have to > figure out the right way to land it. The panel patches and i2c-hid > patches will go through very different trees and so either we'll need > an Ack from one side or the other or someone to create a tag for the > other tree to pull in. This will _probably_ require the true drm-misc > maintainers to get involved, not a lowly committer. ;-) > > > Douglas Anderson (9): > dt-bindings: HID: i2c-hid: Add "panel" property to i2c-hid backed > panels > drm/panel: Check for already prepared/enabled in drm_panel > drm/panel: Add a way for other devices to follow panel state > HID: i2c-hid: Switch to SYSTEM_SLEEP_PM_OPS() > HID: i2c-hid: Rearrange probe() to power things up later > HID: i2c-hid: Make suspend and resume into helper functions > HID: i2c-hid: Support being a panel follower > HID: i2c-hid: Do panel follower work on the system_wq > arm64: dts: qcom: sc7180: Link trogdor touchscreens to the panels > > .../bindings/input/elan,ekth6915.yaml | 6 + > .../bindings/input/goodix,gt7375p.yaml | 6 + > .../bindings/input/hid-over-i2c.yaml | 6 + > .../boot/dts/qcom/sc7180-trogdor-coachz.dtsi | 1 + > .../dts/qcom/sc7180-trogdor-homestar.dtsi | 1 + > .../boot/dts/qcom/sc7180-trogdor-lazor.dtsi | 1 + > .../boot/dts/qcom/sc7180-trogdor-pompom.dtsi | 1 + > .../qcom/sc7180-trogdor-quackingstick.dtsi | 1 + > .../dts/qcom/sc7180-trogdor-wormdingler.dtsi | 1 + > drivers/gpu/drm/drm_panel.c | 194 +++++++++- > drivers/hid/i2c-hid/i2c-hid-core.c | 330 +++++++++++++----- > include/drm/drm_panel.h | 89 +++++ > 12 files changed, 542 insertions(+), 95 deletions(-) >