mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 04:03:58 +08:00
HID: bt: Add support for hidraw HIDIOCGFEATURE and HIDIOCSFEATURE
This patch adds support or getting and setting feature reports for bluetooth HID devices from HIDRAW. Signed-off-by: Alan Ott <alan@signal11.us> Acked-by: Gustavo F. Padovan <padovan@profusion.mobi> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Alan Ott
Jiri Kosina
parent
b4dbde9da8
commit
0ff1731a1a
@ -36,6 +36,7 @@
|
||||
#include <linux/file.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/wait.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <net/sock.h>
|
||||
|
||||
#include <linux/input.h>
|
||||
@ -313,6 +314,86 @@ static int hidp_send_report(struct hidp_session *session, struct hid_report *rep
|
||||
return hidp_queue_report(session, buf, rsize);
|
||||
}
|
||||
|
||||
static int hidp_get_raw_report(struct hid_device *hid,
|
||||
unsigned char report_number,
|
||||
unsigned char *data, size_t count,
|
||||
unsigned char report_type)
|
||||
{
|
||||
struct hidp_session *session = hid->driver_data;
|
||||
struct sk_buff *skb;
|
||||
size_t len;
|
||||
int numbered_reports = hid->report_enum[report_type].numbered;
|
||||
|
||||
switch (report_type) {
|
||||
case HID_FEATURE_REPORT:
|
||||
report_type = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_FEATURE;
|
||||
break;
|
||||
case HID_INPUT_REPORT:
|
||||
report_type = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_INPUT;
|
||||
break;
|
||||
case HID_OUTPUT_REPORT:
|
||||
report_type = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_OUPUT;
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (mutex_lock_interruptible(&session->report_mutex))
|
||||
return -ERESTARTSYS;
|
||||
|
||||
/* Set up our wait, and send the report request to the device. */
|
||||
session->waiting_report_type = report_type & HIDP_DATA_RTYPE_MASK;
|
||||
session->waiting_report_number = numbered_reports ? report_number : -1;
|
||||
set_bit(HIDP_WAITING_FOR_RETURN, &session->flags);
|
||||
data[0] = report_number;
|
||||
if (hidp_send_ctrl_message(hid->driver_data, report_type, data, 1))
|
||||
goto err_eio;
|
||||
|
||||
/* Wait for the return of the report. The returned report
|
||||
gets put in session->report_return. */
|
||||
while (test_bit(HIDP_WAITING_FOR_RETURN, &session->flags)) {
|
||||
int res;
|
||||
|
||||
res = wait_event_interruptible_timeout(session->report_queue,
|
||||
!test_bit(HIDP_WAITING_FOR_RETURN, &session->flags),
|
||||
5*HZ);
|
||||
if (res == 0) {
|
||||
/* timeout */
|
||||
goto err_eio;
|
||||
}
|
||||
if (res < 0) {
|
||||
/* signal */
|
||||
goto err_restartsys;
|
||||
}
|
||||
}
|
||||
|
||||
skb = session->report_return;
|
||||
if (skb) {
|
||||
len = skb->len < count ? skb->len : count;
|
||||
memcpy(data, skb->data, len);
|
||||
|
||||
kfree_skb(skb);
|
||||
session->report_return = NULL;
|
||||
} else {
|
||||
/* Device returned a HANDSHAKE, indicating protocol error. */
|
||||
len = -EIO;
|
||||
}
|
||||
|
||||
clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags);
|
||||
mutex_unlock(&session->report_mutex);
|
||||
|
||||
return len;
|
||||
|
||||
err_restartsys:
|
||||
clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags);
|
||||
mutex_unlock(&session->report_mutex);
|
||||
return -ERESTARTSYS;
|
||||
err_eio:
|
||||
clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags);
|
||||
mutex_unlock(&session->report_mutex);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
static int hidp_output_raw_report(struct hid_device *hid, unsigned char *data, size_t count,
|
||||
unsigned char report_type)
|
||||
{
|
||||
@ -409,6 +490,10 @@ static void hidp_process_handshake(struct hidp_session *session,
|
||||
case HIDP_HSHK_ERR_INVALID_REPORT_ID:
|
||||
case HIDP_HSHK_ERR_UNSUPPORTED_REQUEST:
|
||||
case HIDP_HSHK_ERR_INVALID_PARAMETER:
|
||||
if (test_bit(HIDP_WAITING_FOR_RETURN, &session->flags)) {
|
||||
clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags);
|
||||
wake_up_interruptible(&session->report_queue);
|
||||
}
|
||||
/* FIXME: Call into SET_ GET_ handlers here */
|
||||
break;
|
||||
|
||||
@ -451,9 +536,11 @@ static void hidp_process_hid_control(struct hidp_session *session,
|
||||
}
|
||||
}
|
||||
|
||||
static void hidp_process_data(struct hidp_session *session, struct sk_buff *skb,
|
||||
/* Returns true if the passed-in skb should be freed by the caller. */
|
||||
static int hidp_process_data(struct hidp_session *session, struct sk_buff *skb,
|
||||
unsigned char param)
|
||||
{
|
||||
int done_with_skb = 1;
|
||||
BT_DBG("session %p skb %p len %d param 0x%02x", session, skb, skb->len, param);
|
||||
|
||||
switch (param) {
|
||||
@ -465,7 +552,6 @@ static void hidp_process_data(struct hidp_session *session, struct sk_buff *skb,
|
||||
|
||||
if (session->hid)
|
||||
hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 0);
|
||||
|
||||
break;
|
||||
|
||||
case HIDP_DATA_RTYPE_OTHER:
|
||||
@ -477,12 +563,27 @@ static void hidp_process_data(struct hidp_session *session, struct sk_buff *skb,
|
||||
__hidp_send_ctrl_message(session,
|
||||
HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0);
|
||||
}
|
||||
|
||||
if (test_bit(HIDP_WAITING_FOR_RETURN, &session->flags) &&
|
||||
param == session->waiting_report_type) {
|
||||
if (session->waiting_report_number < 0 ||
|
||||
session->waiting_report_number == skb->data[0]) {
|
||||
/* hidp_get_raw_report() is waiting on this report. */
|
||||
session->report_return = skb;
|
||||
done_with_skb = 0;
|
||||
clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags);
|
||||
wake_up_interruptible(&session->report_queue);
|
||||
}
|
||||
}
|
||||
|
||||
return done_with_skb;
|
||||
}
|
||||
|
||||
static void hidp_recv_ctrl_frame(struct hidp_session *session,
|
||||
struct sk_buff *skb)
|
||||
{
|
||||
unsigned char hdr, type, param;
|
||||
int free_skb = 1;
|
||||
|
||||
BT_DBG("session %p skb %p len %d", session, skb, skb->len);
|
||||
|
||||
@ -502,7 +603,7 @@ static void hidp_recv_ctrl_frame(struct hidp_session *session,
|
||||
break;
|
||||
|
||||
case HIDP_TRANS_DATA:
|
||||
hidp_process_data(session, skb, param);
|
||||
free_skb = hidp_process_data(session, skb, param);
|
||||
break;
|
||||
|
||||
default:
|
||||
@ -511,7 +612,8 @@ static void hidp_recv_ctrl_frame(struct hidp_session *session,
|
||||
break;
|
||||
}
|
||||
|
||||
kfree_skb(skb);
|
||||
if (free_skb)
|
||||
kfree_skb(skb);
|
||||
}
|
||||
|
||||
static void hidp_recv_intr_frame(struct hidp_session *session,
|
||||
@ -845,6 +947,7 @@ static int hidp_setup_hid(struct hidp_session *session,
|
||||
hid->dev.parent = hidp_get_device(session);
|
||||
hid->ll_driver = &hidp_hid_driver;
|
||||
|
||||
hid->hid_get_raw_report = hidp_get_raw_report;
|
||||
hid->hid_output_raw_report = hidp_output_raw_report;
|
||||
|
||||
return 0;
|
||||
@ -897,6 +1000,8 @@ int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock,
|
||||
skb_queue_head_init(&session->ctrl_transmit);
|
||||
skb_queue_head_init(&session->intr_transmit);
|
||||
|
||||
mutex_init(&session->report_mutex);
|
||||
init_waitqueue_head(&session->report_queue);
|
||||
init_waitqueue_head(&session->startup_queue);
|
||||
session->waiting_for_startup = 1;
|
||||
session->flags = req->flags & (1 << HIDP_BLUETOOTH_VENDOR_ID);
|
||||
|
||||
@ -80,6 +80,7 @@
|
||||
#define HIDP_VIRTUAL_CABLE_UNPLUG 0
|
||||
#define HIDP_BOOT_PROTOCOL_MODE 1
|
||||
#define HIDP_BLUETOOTH_VENDOR_ID 9
|
||||
#define HIDP_WAITING_FOR_RETURN 10
|
||||
#define HIDP_WAITING_FOR_SEND_ACK 11
|
||||
|
||||
struct hidp_connadd_req {
|
||||
@ -155,6 +156,13 @@ struct hidp_session {
|
||||
struct sk_buff_head ctrl_transmit;
|
||||
struct sk_buff_head intr_transmit;
|
||||
|
||||
/* Used in hidp_get_raw_report() */
|
||||
int waiting_report_type; /* HIDP_DATA_RTYPE_* */
|
||||
int waiting_report_number; /* -1 for not numbered */
|
||||
struct mutex report_mutex;
|
||||
struct sk_buff *report_return;
|
||||
wait_queue_head_t report_queue;
|
||||
|
||||
/* Used in hidp_output_raw_report() */
|
||||
int output_report_success; /* boolean */
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user