Touch Display 2 excess load fixes#7263
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pelwell merged 3 commits intoraspberrypi:rpi-6.12.yfrom Mar 4, 2026
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…ine" This reverts commit dd4cc67.
There are designs incorporating Goodix touch controller that do not connect interrupt pin, for example Raspberry Pi. To support such systems use polling mode for the input device when I2C client does not have interrupt assigned to it. Signed-off-by: Joseph Guo <qijian.guo@nxp.com> Reviewed-by: Haibo Chen <haibo.chen@nxp.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20250522020418.1963422-1-qijian.guo@nxp.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Some Goodix controllers report the buffer isn't ready continuously when there are no touch points to report. That triggers the retry mechanism within the driver required as supposedly the data can be 10ms after the interrupt occurs. Seeing as we don't have an interrupt there is little point in retrying, and we can wait for the next poll event. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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kernel: Touch Display 2 excess load fixes See: raspberrypi/linux#7263 kernel: drm/vc4: plane: Add support for RGB[AX]8888 and BGR[AX]8888 formats See: raspberrypi/linux#7262
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kernel: Touch Display 2 excess load fixes See: raspberrypi/linux#7263 kernel: drm/vc4: plane: Add support for RGB[AX]8888 and BGR[AX]8888 formats See: raspberrypi/linux#7262
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I've reverted my downstream version of adding polling, and backported the upstream version so that the other change forward-ports trivially.
https://forums.raspberrypi.com/viewtopic.php?t=396649