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HID: sony: Cache the output report for the Dualshock 4 

Retrieve and cache the output report for the Dualshock 4 in sony_probe()
instead of repeatedly walking the report list in the worker function.

Signed-off-by: Frank Praznik <frank.praznik@oh.rr.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Frank Praznik 2014-01-17 14:46:26 -05:00 committed by Jiri Kosina
parent ed19d8cf28
commit c4e1ddf268
1 changed files with 35 additions and 20 deletions
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55
drivers/hid/hid-sony.c
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@ -298,6 +298,7 @@ static const unsigned int buzz_keymap[] = {
struct sony_sc {
struct hid_device *hdev;
struct led_classdev *leds[MAX_LEDS];
struct hid_report *output_report;
unsigned long quirks;
struct work_struct state_worker;
@ -743,26 +744,9 @@ static void dualshock4_state_worker(struct work_struct *work)
{
struct sony_sc *sc = container_of(work, struct sony_sc, state_worker);
struct hid_device *hdev = sc->hdev;
struct list_head *head, *list;
struct hid_report *report;
__s32 *value;
struct hid_report *report = sc->output_report;
__s32 *value = report->field[0]->value;
list = &hdev->report_enum[HID_OUTPUT_REPORT].report_list;
list_for_each(head, list) {
report = list_entry(head, struct hid_report, list);
/* Report 5 is used to send data to the controller via USB */
if ((sc->quirks & DUALSHOCK4_CONTROLLER_USB) && report->id == 5)
break;
}
if (head == list) {
hid_err(hdev, "Dualshock 4 output report not found\n");
return;
}
value = report->field[0]->value;
value[0] = 0x03;
#ifdef CONFIG_SONY_FF
@ -822,6 +806,33 @@ static void sony_destroy_ff(struct hid_device *hdev)
}
#endif
static int sony_set_output_report(struct sony_sc *sc, int req_id, int req_size)
{
struct list_head *head, *list;
struct hid_report *report;
struct hid_device *hdev = sc->hdev;
list = &hdev->report_enum[HID_OUTPUT_REPORT].report_list;
list_for_each(head, list) {
report = list_entry(head, struct hid_report, list);
if (report->id == req_id) {
if (report->size < req_size) {
hid_err(hdev, "Output report 0x%02x (%i bits) is smaller than requested size (%i bits)\n",
req_id, report->size, req_size);
return -EINVAL;
}
sc->output_report = report;
return 0;
}
}
hid_err(hdev, "Unable to locate output report 0x%02x\n", req_id);
return -EINVAL;
}
static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
int ret;
@ -866,7 +877,11 @@ static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id)
else if (sc->quirks & SIXAXIS_CONTROLLER_BT)
ret = sixaxis_set_operational_bt(hdev);
else if (sc->quirks & DUALSHOCK4_CONTROLLER_USB) {
ret = 0;
/* Report 5 (31 bytes) is used to send data to the controller via USB */
ret = sony_set_output_report(sc, 0x05, 248);
if (ret < 0)
goto err_stop;
INIT_WORK(&sc->state_worker, dualshock4_state_worker);
} else {
ret = 0;