Return-Path: From: =?UTF-8?q?Jo=C3=A3o=20Paulo=20Rechi=20Vita?= To: linux-bluetooth@vger.kernel.org Cc: =?UTF-8?q?Jo=C3=A3o=20Paulo=20Rechi=20Vita?= Subject: [PATCH 15/21] hog: Add support for uHID events Date: Tue, 3 Jul 2012 15:43:07 -0300 Message-Id: <1341340993-7480-16-git-send-email-jprvita@openbossa.org> In-Reply-To: <1341340993-7480-1-git-send-email-jprvita@openbossa.org> References: <1341340993-7480-1-git-send-email-jprvita@openbossa.org> Sender: linux-bluetooth-owner@vger.kernel.org List-ID: This patch adds the GLib GIOChannel watcher to monitor uhid events. --- input/hog_device.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/input/hog_device.c b/input/hog_device.c index 53b4746..b812ed5 100644 --- a/input/hog_device.c +++ b/input/hog_device.c @@ -53,6 +53,7 @@ #define HOG_REPORT_MAP_UUID 0x2A4B #define HOG_REPORT_UUID 0x2A4D + #define UHID_DEVICE_FILE "/dev/uhid" #define HOG_REPORT_MAP_MAX_SIZE 512 @@ -67,6 +68,7 @@ struct hog_device { GSList *reports; int uhid_fd; gboolean prepend_id; + guint uhid_watch_id; }; struct report { @@ -331,6 +333,36 @@ static void char_discovered_cb(GSList *chars, guint8 status, gpointer user_data) } } +static gboolean uhid_event_cb(GIOChannel *io, GIOCondition cond, + gpointer user_data) +{ + struct hog_device *hogdev = user_data; + struct uhid_event ev; + ssize_t bread; + int fd; + + if (cond & (G_IO_ERR | G_IO_NVAL)) + goto failed; + + fd = g_io_channel_unix_get_fd(io); + memset(&ev, 0, sizeof(ev)); + + bread = read(fd, &ev, sizeof(ev)); + if (bread < 0) { + int err = -errno; + DBG("uhid-dev read: %s(%d)", strerror(err), err); + goto failed; + } + + DBG("uHID event type %d received", ev.type); + + return TRUE; + +failed: + hogdev->uhid_watch_id = 0; + return FALSE; +} + static void attio_connected_cb(GAttrib *attrib, gpointer user_data) { struct hog_device *hogdev = user_data; @@ -429,6 +461,8 @@ int hog_device_register(struct btd_device *device, const char *path) { struct hog_device *hogdev; struct gatt_primary *prim; + GIOCondition cond = G_IO_IN | G_IO_ERR | G_IO_NVAL; + GIOChannel *io; hogdev = find_device_by_path(devices, path); if (hogdev) @@ -449,12 +483,19 @@ int hog_device_register(struct btd_device *device, const char *path) return -errno; } + io = g_io_channel_unix_new(hogdev->uhid_fd); + g_io_channel_set_encoding(io, NULL, NULL); + hogdev->uhid_watch_id = g_io_add_watch(io, cond, uhid_event_cb, + hogdev); + g_io_channel_unref(io); + hogdev->hog_primary = g_memdup(prim, sizeof(*prim)); hogdev->attioid = btd_device_add_attio_callback(device, attio_connected_cb, attio_disconnected_cb, hogdev); + device_set_auto_connect(device, TRUE); devices = g_slist_append(devices, hogdev); @@ -472,6 +513,11 @@ int hog_device_unregister(const char *path) btd_device_remove_attio_callback(hogdev->device, hogdev->attioid); + if (hogdev->uhid_watch_id) { + g_source_remove(hogdev->uhid_watch_id); + hogdev->uhid_watch_id = 0; + } + close(hogdev->uhid_fd); hogdev->uhid_fd = -1; -- 1.7.10.4