A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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media: bpf: add bpf function to report mouse movement

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Some IR remotes have a directional pad or other pointer-like thing that
can be used as a mouse. Make it possible to decode these types of IR
protocols in BPF.

Cc: [email protected]
Signed-off-by: Sean Young <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
This commit is contained in:
Sean Young 2018-12-06 13:01:03 +00:00 • committed by Alexei Starovoitov
commit 01d3240a04
7 changed files with 109 additions and 23 deletions
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24
drivers/media/rc/bpf-lirc.c
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@ -59,6 +59,28 @@ static const struct bpf_func_proto rc_keydown_proto = {
.arg4_type = ARG_ANYTHING,
};
BPF_CALL_3(bpf_rc_pointer_rel, u32*, sample, s32, rel_x, s32, rel_y)
{
struct ir_raw_event_ctrl *ctrl;
ctrl = container_of(sample, struct ir_raw_event_ctrl, bpf_sample);
input_report_rel(ctrl->dev->input_dev, REL_X, rel_x);
input_report_rel(ctrl->dev->input_dev, REL_Y, rel_y);
input_sync(ctrl->dev->input_dev);
return 0;
}
static const struct bpf_func_proto rc_pointer_rel_proto = {
.func = bpf_rc_pointer_rel,
.gpl_only = true,
.ret_type = RET_INTEGER,
.arg1_type = ARG_PTR_TO_CTX,
.arg2_type = ARG_ANYTHING,
.arg3_type = ARG_ANYTHING,
};
static const struct bpf_func_proto *
lirc_mode2_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
{
@ -67,6 +89,8 @@ lirc_mode2_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
return &rc_repeat_proto;
case BPF_FUNC_rc_keydown:
return &rc_keydown_proto;
case BPF_FUNC_rc_pointer_rel:
return &rc_pointer_rel_proto;
case BPF_FUNC_map_lookup_elem:
return &bpf_map_lookup_elem_proto;
case BPF_FUNC_map_update_elem: