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Input: goodix-berlin - add sysfs interface for reading and writing touch IC registers

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Export a sysfs interface that would allow reading and writing touchscreen
IC registers. With this interface many things can be done in usersapce
such as firmware updates. An example tool that utilizes this interface
for performing firmware updates can be found at [1].

[1] https://github.com/goodix/fwupdate_for_berlin_linux

Signed-off-by: Charles Wang <charles.goodix@gmail.com>
Link: https://lore.kernel.org/r/20240514115135.21410-1-charles.goodix@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Charles Wang
2024-05-15 16:20:28 -07:00
committed by Dmitry Torokhov
parent 2f99ffd8d7
commit 240801c5f4
4 changed files with 46 additions and 0 deletions
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drivers/input/touchscreen/goodix_berlin.h
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@@ -20,5 +20,6 @@ int goodix_berlin_probe(struct device *dev, int irq, const struct input_id *id,
struct regmap *regmap);
extern const struct dev_pm_ops goodix_berlin_pm_ops;
extern const struct attribute_group *goodix_berlin_groups[];
#endif