Input: psmouse - add support for Cortron PS/2 Trackballs

[net-next-2.6.git] / drivers / input / mouse / psmouse-base.c

diff --git a/drivers/input/mouse/psmouse-base.c b/drivers/input/mouse/psmouse-base.c
index f15f695777f8ff6b0c352a948a9a1bc0fe942a2f..b9f0fb2530e2357cb1f39ff1e52d48cf764ccc1b 100644 (file)
--- a/drivers/input/mouse/psmouse-base.c
+++ b/drivers/input/mouse/psmouse-base.c
@@ -177,6 +177,15 @@ static psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse)
                packet[1] |= (packet[0] & 0x40) << 1;
        }
 
+/*
+ * Cortron PS2 Trackball reports SIDE button on the 4th bit of the first
+ * byte.
+ */
+       if (psmouse->type == PSMOUSE_CORTRON) {
+               input_report_key(dev, BTN_SIDE, (packet[0] >> 3) & 1);
+               packet[0] |= 0x08;
+       }
+
 /*
  * Generic PS/2 Mouse
  */
@@ -539,6 +548,20 @@ static int ps2bare_detect(struct psmouse *psmouse, int set_properties)
        return 0;
 }
 
+/*
+ * Cortron PS/2 protocol detection. There's no special way to detect it, so it
+ * must be forced by sysfs protocol writing.
+ */
+static int cortron_detect(struct psmouse *psmouse, int set_properties)
+{
+       if (set_properties) {
+               psmouse->vendor = "Cortron";
+               psmouse->name = "PS/2 Trackball";
+               set_bit(BTN_SIDE, psmouse->dev->keybit);
+       }
+
+       return 0;
+}
 
 /*
  * psmouse_extensions() probes for any extensions to the basic PS/2 protocol
@@ -739,6 +762,12 @@ static const struct psmouse_protocol psmouse_protocols[] = {
                .detect         = touchkit_ps2_detect,
        },
 #endif
+       {
+               .type           = PSMOUSE_CORTRON,
+               .name           = "CortronPS/2",
+               .alias          = "cortps",
+               .detect         = cortron_detect,
+       },
        {
                .type           = PSMOUSE_AUTO,
                .name           = "auto",