lorenz.stechauner/Device-Driver
1
0
Fork 0
Code Pull Requests Activity

cleanup phase accumulator approach

Browse Source
This commit is contained in:
Elias Huhsovitz
2026-01-18 17:35:44 +01:00
parent 7d1f661cf1
commit f2c94e77de
1 changed files with 8 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
g29-wheel/g29_usb.c
View File

@@ -41,6 +41,9 @@ MODULE_LICENSE("GPL");
#define G29_BTN_R1 0x00000100u #define G29_BTN_R1 0x00000100u
#define G29_BTN_L1 0x00000200u #define G29_BTN_L1 0x00000200u
#define WHEEL_CENTER 32768
#define WHEEL_MAX_DIST 32768
enum g29_mode { enum g29_mode {
G29_MODE_MEDIA = 0, G29_MODE_MEDIA = 0,
}; };
@@ -100,15 +103,13 @@ struct g29_dev {
struct g29_state last; struct g29_state last;
}; };
#define WHEEL_CENTER 32768
#define WHEEL_MAX_DIST 32768
static void g29_steer_timer_fn(struct timer_list *t) { static void g29_steer_timer_fn(struct timer_list *t) {
struct g29_dev *g29 = timer_container_of(g29, t, steer_timer); struct g29_dev *g29 = timer_container_of(g29, t, steer_timer);
const int rot = le16_to_cpu(g29->last.rot_le); const int rot = le16_to_cpu(g29->last.rot_le);
int distance_from_center = abs(rot - WHEEL_CENTER); int distance_from_center = abs(rot - WHEEL_CENTER);
int target_key = (rot < WHEEL_CENTER) ? KEY_A : KEY_D;
bool press_key; bool press_key;
/* Phase accumulator approach: /* Phase accumulator approach:
@@ -161,10 +162,10 @@ static void g29_process_report(struct g29_dev *g29, const u8 *data, unsigned int
struct g29_state *cur = (void *) data; struct g29_state *cur = (void *) data;
switch (mode) { switch (mode) {
case G29_MODE_MEDIA: case G29_MODE_MEDIA:
default: default:
g29_apply_media_mode(g29, cur, &g29->last); g29_apply_media_mode(g29, cur, &g29->last);
break; break;
} }
g29->last = *cur; g29->last = *cur;