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HID: uclogic: Add support for bitmap dials

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A bitmap dial sends reports with a dedicated bit per direction: 1 means
clockwise rotation, 2 means counterclockwise, as opposed to the normal
1 and -1 values.

Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com>
Signed-off-by: José Expósito <jose.exposito89@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Nikolai Kondrashov 2022-04-14 13:09:35 +02:00 • committed by Jiri Kosina
parent f25df35328
commit 2112b49eaa
2 changed files with 20 additions and 1 deletions
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6
drivers/hid/hid-uclogic-core.c
View file

@ -382,6 +382,12 @@ static int uclogic_raw_event_frame(
}
}
/* If need to, and can, transform the bitmap dial reports */
if (frame->bitmap_dial_byte > 0 && frame->bitmap_dial_byte < size) {
if (data[frame->bitmap_dial_byte] == 2)
data[frame->bitmap_dial_byte] = -1;
}
return 0;
}

15
drivers/hid/hid-uclogic-params.h
View file

@ -153,6 +153,13 @@ struct uclogic_params_frame {
* Zero if no reversal should be done.
*/
__s8 touch_ring_flip_at;
/*
* Offset of the bitmap dial byte, in the report. Zero if not present.
* Only valid if "id" is not zero. A bitmap dial sends reports with a
* dedicated bit per direction: 1 means clockwise rotation, 2 means
* counterclockwise, as opposed to the normal 1 and -1.
*/
unsigned int bitmap_dial_byte;
};
/*
@ -230,6 +237,7 @@ extern int uclogic_params_init(struct uclogic_params *params,
"\t\t.touch_ring_byte = %u\n" \
"\t\t.touch_ring_max = %hhd\n" \
"\t\t.touch_ring_flip_at = %hhd\n" \
"\t\t.bitmap_dial_byte = %u\n" \
"\t},\n" \
"\t{\n" \
"\t\t.desc_ptr = %p\n" \
@ -241,6 +249,7 @@ extern int uclogic_params_init(struct uclogic_params *params,
"\t\t.touch_ring_byte = %u\n" \
"\t\t.touch_ring_max = %hhd\n" \
"\t\t.touch_ring_flip_at = %hhd\n" \
"\t\t.bitmap_dial_byte = %u\n" \
"\t},\n" \
"\t{\n" \
"\t\t.desc_ptr = %p\n" \
@ -252,6 +261,7 @@ extern int uclogic_params_init(struct uclogic_params *params,
"\t\t.touch_ring_byte = %u\n" \
"\t\t.touch_ring_max = %hhd\n" \
"\t\t.touch_ring_flip_at = %hhd\n" \
"\t\t.bitmap_dial_byte = %u\n" \
"\t},\n" \
"}\n"
@ -281,6 +291,7 @@ extern int uclogic_params_init(struct uclogic_params *params,
(_params)->frame_list[0].touch_ring_byte, \
(_params)->frame_list[0].touch_ring_max, \
(_params)->frame_list[0].touch_ring_flip_at, \
(_params)->frame_list[0].bitmap_dial_byte, \
(_params)->frame_list[1].desc_ptr, \
(_params)->frame_list[1].desc_size, \
(_params)->frame_list[1].id, \
@ -290,6 +301,7 @@ extern int uclogic_params_init(struct uclogic_params *params,
(_params)->frame_list[1].touch_ring_byte, \
(_params)->frame_list[1].touch_ring_max, \
(_params)->frame_list[1].touch_ring_flip_at, \
(_params)->frame_list[1].bitmap_dial_byte, \
(_params)->frame_list[2].desc_ptr, \
(_params)->frame_list[2].desc_size, \
(_params)->frame_list[2].id, \
@ -298,7 +310,8 @@ extern int uclogic_params_init(struct uclogic_params *params,
(_params)->frame_list[2].dev_id_byte, \
(_params)->frame_list[2].touch_ring_byte, \
(_params)->frame_list[2].touch_ring_max, \
(_params)->frame_list[2].touch_ring_flip_at
(_params)->frame_list[2].touch_ring_flip_at, \
(_params)->frame_list[2].bitmap_dial_byte
/* Get a replacement report descriptor for a tablet's interface. */
extern int uclogic_params_get_desc(const struct uclogic_params *params,