Changes in uspace/drv/bus/usb/usbhid/mouse/mousedev.c [70172dc4:e3c78efc] in mainline

File:

• uspace/drv/bus/usb/usbhid/mouse/mousedev.c (modified) (9 diffs)

uspace/drv/bus/usb/usbhid/mouse/mousedev.c

@@ -52 +52 @@
 #include "../usbhid.h"
 
+/** Number of simulated arrow-key presses for singel wheel step. */
+#define ARROWS_PER_SINGLE_WHEEL 3
+
 #define NAME "mouse"
 
@@ -66 +69 @@
 
 const char *HID_MOUSE_FUN_NAME = "mouse";
+const char *HID_MOUSE_WHEEL_FUN_NAME = "mouse-wheel";
 const char *HID_MOUSE_CATEGORY = "mouse";
+const char *HID_MOUSE_WHEEL_CATEGORY = "keyboard";
 
 /** Default idle rate for mouses. */
@@ -121 +126 @@
 
         usb_log_debug("%s: fun->name: %s\n", __FUNCTION__, fun->name);
-        usb_log_debug("%s: mouse_sess: %p\n",
-            __FUNCTION__, mouse_dev->mouse_sess);
+        usb_log_debug("%s: mouse_sess: %p, wheel_sess: %p\n",
+            __FUNCTION__, mouse_dev->mouse_sess, mouse_dev->wheel_sess);
+
+        async_sess_t **sess_ptr = (fun == mouse_dev->mouse_fun) ?
+            &mouse_dev->mouse_sess : &mouse_dev->wheel_sess;
 
         async_sess_t *sess =
             async_callback_receive_start(EXCHANGE_SERIALIZE, icall);
         if (sess != NULL) {
-                if (mouse_dev->mouse_sess == NULL) {
-                        mouse_dev->mouse_sess = sess;
+                if (*sess_ptr == NULL) {
+                        *sess_ptr = sess;
                         usb_log_debug("Console session to %s set ok (%p).\n",
                             fun->name, sess);
@@ -136 +144 @@
                             fun->name);
                         async_answer_0(icallid, ELIMIT);
-                        async_hangup(sess);
                 }
         } else {
@@ -143 +150 @@
         }
 }
-/*----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------*/
+
+static void usb_mouse_send_wheel(const usb_mouse_t *mouse_dev, int wheel)
+{
+        unsigned int key = (wheel > 0) ? KC_UP : KC_DOWN;
+
+        if (mouse_dev->wheel_sess == NULL) {
+                usb_log_warning(
+                    "Connection to console not ready, wheel roll discarded.\n");
+                return;
+        }
+
+        const unsigned count =
+            ((wheel < 0) ? -wheel : wheel) * ARROWS_PER_SINGLE_WHEEL;
+        for (unsigned i = 0; i < count; i++) {
+                /* Send arrow press and release. */
+                usb_log_debug2("Sending key %d to the console\n", key);
+                
+                async_exch_t *exch = async_exchange_begin(mouse_dev->wheel_sess);
+                
+                async_msg_4(exch, KBDEV_EVENT, KEY_PRESS, key, 0, 0);
+                async_msg_4(exch, KBDEV_EVENT, KEY_RELEASE, key, 0, 0);
+                
+                async_exchange_end(exch);
+        }
+}
+
+/*----------------------------------------------------------------------------*/
+
 static int get_mouse_axis_move_value(uint8_t rid, usb_hid_report_t *report,
     int32_t usage)
@@ -167 +203 @@
         return result;
 }
-/*----------------------------------------------------------------------------*/
+
 static bool usb_mouse_process_report(usb_hid_dev_t *hid_dev,
     usb_mouse_t *mouse_dev)
@@ -185 +221 @@
             &hid_dev->report, USB_HIDUT_USAGE_GENERIC_DESKTOP_WHEEL);
 
-        if (shift_x || shift_y || wheel) {
+        if ((shift_x != 0) || (shift_y != 0)) {
                 async_exch_t *exch =
                     async_exchange_begin(mouse_dev->mouse_sess);
                 if (exch != NULL) {
-                        async_msg_3(exch, MOUSEEV_MOVE_EVENT,
-                            shift_x, shift_y, wheel);
+                        async_req_2_0(exch, MOUSEEV_MOVE_EVENT, shift_x, shift_y);
                         async_exchange_end(exch);
                 }
         }
+
+        if (wheel != 0)
+                usb_mouse_send_wheel(mouse_dev, wheel);
 
         /* Buttons */
@@ -303 +341 @@
         mouse->mouse_fun = fun;
 
+        /*
+         * Special function for acting as keyboard (wheel)
+         */
+        usb_log_debug("Creating DDF function %s...\n",
+                      HID_MOUSE_WHEEL_FUN_NAME);
+        fun = ddf_fun_create(hid_dev->usb_dev->ddf_dev, fun_exposed,
+            HID_MOUSE_WHEEL_FUN_NAME);
+        if (fun == NULL) {
+                usb_log_error("Could not create DDF function node `%s'.\n",
+                    HID_MOUSE_WHEEL_FUN_NAME);
+                FUN_UNBIND_DESTROY(mouse->mouse_fun);
+                mouse->mouse_fun = NULL;
+                return ENOMEM;
+        }
+
+        /*
+         * Store the initialized HID device and HID ops
+         * to the DDF function.
+         */
+        fun->ops = &mouse->ops;
+        fun->driver_data = mouse;
+
+        rc = ddf_fun_bind(fun);
+        if (rc != EOK) {
+                usb_log_error("Could not bind DDF function `%s': %s.\n",
+                    fun->name, str_error(rc));
+                FUN_UNBIND_DESTROY(mouse->mouse_fun);
+                mouse->mouse_fun = NULL;
+
+                fun->driver_data = NULL;
+                ddf_fun_destroy(fun);
+                return rc;
+        }
+
+        usb_log_debug("Adding DDF function to category %s...\n", 
+            HID_MOUSE_WHEEL_CATEGORY);
+        rc = ddf_fun_add_to_category(fun, HID_MOUSE_WHEEL_CATEGORY);
+        if (rc != EOK) {
+                usb_log_error(
+                    "Could not add DDF function to category %s: %s.\n",
+                    HID_MOUSE_WHEEL_CATEGORY, str_error(rc));
+
+                FUN_UNBIND_DESTROY(mouse->mouse_fun);
+                mouse->mouse_fun = NULL;
+                FUN_UNBIND_DESTROY(fun);
+                return rc;
+        }
+        mouse->wheel_fun = fun;
+
         return EOK;
 }
-/*----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------*/
+
 /** Get highest index of a button mentioned in given report.
  *
@@ -427 +516 @@
         }
 
+        if (mouse_dev->wheel_sess != NULL) {
+                const int ret = async_hangup(mouse_dev->wheel_sess);
+                if (ret != EOK)
+                        usb_log_warning("Failed to hang up wheel session: "
+                            "%p, %s.\n", mouse_dev->wheel_sess, str_error(ret));
+        }
+
         FUN_UNBIND_DESTROY(mouse_dev->mouse_fun);
+        FUN_UNBIND_DESTROY(mouse_dev->wheel_fun);
 
         free(mouse_dev->buttons);