From e1aaadd4d8162a2c33e41dd5a72234ea4d3b014f Mon Sep 17 00:00:00 2001 From: Marcel Holtmann Date: Sat, 17 Feb 2007 23:58:49 +0100 Subject: [PATCH] [Bluetooth] Add support for using the HID subsystem This patch extends the current Bluetooth HID support to use the new HID subsystem and adds full report mode support. Signed-off-by: Marcel Holtmann --- net/bluetooth/hidp/Kconfig | 1 + net/bluetooth/hidp/core.c | 170 +++++++++++++++++++++++++++++++++++-- net/bluetooth/hidp/hidp.h | 2 + 3 files changed, 164 insertions(+), 9 deletions(-) diff --git a/net/bluetooth/hidp/Kconfig b/net/bluetooth/hidp/Kconfig index c6abf2a5a932..98fdfa1fbddd 100644 --- a/net/bluetooth/hidp/Kconfig +++ b/net/bluetooth/hidp/Kconfig @@ -1,6 +1,7 @@ config BT_HIDP tristate "HIDP protocol support" depends on BT && BT_L2CAP && INPUT + select HID help HIDP (Human Interface Device Protocol) is a transport layer for HID reports. HIDP is required for the Bluetooth Human diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c index 4b99c5e4478d..05e23bbcb0a1 100644 --- a/net/bluetooth/hidp/core.c +++ b/net/bluetooth/hidp/core.c @@ -38,6 +38,7 @@ #include #include +#include #include #include @@ -50,7 +51,7 @@ #define BT_DBG(D...) #endif -#define VERSION "1.1" +#define VERSION "1.2" static DECLARE_RWSEM(hidp_session_sem); static LIST_HEAD(hidp_session_list); @@ -124,15 +125,22 @@ static void __hidp_copy_session(struct hidp_session *session, struct hidp_connin else strncpy(ci->name, "HID Boot Device", 128); } + + if (session->hid) { + ci->vendor = session->hid->vendor; + ci->product = session->hid->product; + ci->version = session->hid->version; + strncpy(ci->name, session->hid->name, 128); + } } -static int hidp_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) +static inline int hidp_queue_event(struct hidp_session *session, struct input_dev *dev, + unsigned int type, unsigned int code, int value) { - struct hidp_session *session = dev->private; - struct sk_buff *skb; unsigned char newleds; + struct sk_buff *skb; - BT_DBG("input %p type %d code %d value %d", dev, type, code, value); + BT_DBG("session %p type %d code %d value %d", session, type, code, value); if (type != EV_LED) return -1; @@ -164,6 +172,21 @@ static int hidp_input_event(struct input_dev *dev, unsigned int type, unsigned i return 0; } +static int hidp_hidinput_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) +{ + struct hid_device *hid = dev->private; + struct hidp_session *session = hid->driver_data; + + return hidp_queue_event(session, dev, type, code, value); +} + +static int hidp_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) +{ + struct hidp_session *session = dev->private; + + return hidp_queue_event(session, dev, type, code, value); +} + static void hidp_input_report(struct hidp_session *session, struct sk_buff *skb) { struct input_dev *dev = session->input; @@ -219,6 +242,42 @@ static void hidp_input_report(struct hidp_session *session, struct sk_buff *skb) input_sync(dev); } +static inline int hidp_queue_report(struct hidp_session *session, unsigned char *data, int size) +{ + struct sk_buff *skb; + + BT_DBG("session %p hid %p data %p size %d", session, device, data, size); + + if (!(skb = alloc_skb(size + 1, GFP_ATOMIC))) { + BT_ERR("Can't allocate memory for new frame"); + return -ENOMEM; + } + + *skb_put(skb, 1) = 0xa2; + if (size > 0) + memcpy(skb_put(skb, size), data, size); + + skb_queue_tail(&session->intr_transmit, skb); + + hidp_schedule(session); + + return 0; +} + +static int hidp_send_report(struct hidp_session *session, struct hid_report *report) +{ + unsigned char buf[32]; + int rsize; + + rsize = ((report->size - 1) >> 3) + 1 + (report->id > 0); + if (rsize > sizeof(buf)) + return -EIO; + + hid_output_report(report, buf); + + return hidp_queue_report(session, buf, rsize); +} + static void hidp_idle_timeout(unsigned long arg) { struct hidp_session *session = (struct hidp_session *) arg; @@ -346,6 +405,10 @@ static inline void hidp_process_data(struct hidp_session *session, struct sk_buf if (session->input) hidp_input_report(session, skb); + + if (session->hid) + hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 0); + break; case HIDP_DATA_RTYPE_OTHER: @@ -404,8 +467,14 @@ static inline void hidp_recv_intr_frame(struct hidp_session *session, struct sk_ if (hdr == (HIDP_TRANS_DATA | HIDP_DATA_RTYPE_INPUT)) { hidp_set_timer(session); + if (session->input) hidp_input_report(session, skb); + + if (session->hid) { + hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 1); + BT_DBG("report len %d", skb->len); + } } else { BT_DBG("Unsupported protocol header 0x%02x", hdr); } @@ -471,6 +540,11 @@ static int hidp_session(void *arg) product = session->input->id.product; } + if (session->hid) { + vendor = session->hid->vendor; + product = session->hid->product; + } + daemonize("khidpd_%04x%04x", vendor, product); set_user_nice(current, -15); current->flags |= PF_NOFREEZE; @@ -521,6 +595,12 @@ static int hidp_session(void *arg) session->input = NULL; } + if (session->hid) { + if (session->hid->claimed & HID_CLAIMED_INPUT) + hidinput_disconnect(session->hid); + hid_free_device(session->hid); + } + up_write(&hidp_session_sem); kfree(session); @@ -590,6 +670,44 @@ static inline void hidp_setup_input(struct hidp_session *session, struct hidp_co input_register_device(input); } +static inline void hidp_setup_hid(struct hidp_session *session, struct hidp_connadd_req *req) +{ + struct hid_device *hid = session->hid; + struct hid_report *report; + bdaddr_t src, dst; + + baswap(&src, &bt_sk(session->ctrl_sock->sk)->src); + baswap(&dst, &bt_sk(session->ctrl_sock->sk)->dst); + + hid->driver_data = session; + + hid->country = req->country; + + hid->bus = BUS_BLUETOOTH; + hid->vendor = req->vendor; + hid->product = req->product; + hid->version = req->version; + + strncpy(hid->name, req->name, 128); + strncpy(hid->phys, batostr(&src), 64); + strncpy(hid->uniq, batostr(&dst), 64); + + hid->dev = hidp_get_device(session); + + hid->hidinput_input_event = hidp_hidinput_event; + + list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list) + hidp_send_report(session, report); + + list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list) + hidp_send_report(session, report); + + if (hidinput_connect(hid) == 0) { + hid->claimed |= HID_CLAIMED_INPUT; + hid_ff_init(hid); + } +} + int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, struct socket *intr_sock) { struct hidp_session *session, *s; @@ -605,10 +723,38 @@ int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, if (!session) return -ENOMEM; - session->input = input_allocate_device(); - if (!session->input) { - kfree(session); - return -ENOMEM; + BT_DBG("rd_data %p rd_size %d", req->rd_data, req->rd_size); + + if (req->rd_size > 0) { + unsigned char *buf = kmalloc(req->rd_size, GFP_KERNEL); + + if (!buf) { + kfree(session); + return -ENOMEM; + } + + if (copy_from_user(buf, req->rd_data, req->rd_size)) { + kfree(buf); + kfree(session); + return -EFAULT; + } + + session->hid = hid_parse_report(buf, req->rd_size); + + kfree(buf); + + if (!session->hid) { + kfree(session); + return -EINVAL; + } + } + + if (!session->hid) { + session->input = input_allocate_device(); + if (!session->input) { + kfree(session); + return -ENOMEM; + } } down_write(&hidp_session_sem); @@ -644,6 +790,9 @@ int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, if (session->input) hidp_setup_input(session, req); + if (session->hid) + hidp_setup_hid(session, req); + __hidp_link_session(session); hidp_set_timer(session); @@ -677,6 +826,9 @@ unlink: failed: up_write(&hidp_session_sem); + if (session->hid) + hid_free_device(session->hid); + kfree(session->input); kfree(session); return err; diff --git a/net/bluetooth/hidp/hidp.h b/net/bluetooth/hidp/hidp.h index a326601c8f41..343fb0566b3e 100644 --- a/net/bluetooth/hidp/hidp.h +++ b/net/bluetooth/hidp/hidp.h @@ -145,6 +145,8 @@ struct hidp_session { struct input_dev *input; + struct hid_device *hid; + struct timer_list timer; struct sk_buff_head ctrl_transmit; -- 2.39.2