Input: lifebook - split into 2 devices

Have lifebook protocol register 2 separate input devices -
one for the touchscreen reporting absolute coordinates and
touches and another one for touchpad reporting relative
coordinates and left and right button presses.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 93 insertions, 20 deletions

diff --git a/drivers/input/mouse/lifebook.c b/drivers/input/mouse/lifebook.c
index aa3b245f25d9..1740cadd9594 100644
--- a/drivers/input/mouse/lifebook.c
+++ b/drivers/input/mouse/lifebook.c
@@ -20,6 +20,11 @@
 #include "psmouse.h"
 #include "lifebook.h"
 
+struct lifebook_data {
+        struct input_dev *dev2;         /* Relative device */
+        char phys[32];
+};
+
 static const char *desired_serio_phys;
 
 static int lifebook_set_serio_phys(struct dmi_system_id *d)
@@ -102,7 +107,9 @@ static struct dmi_system_id lifebook_dmi_table[] = {
 
 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
 {
-        struct input_dev *dev = psmouse->dev;
+        struct lifebook_data *priv = psmouse->private;
+        struct input_dev *dev1 = psmouse->dev;
+        struct input_dev *dev2 = priv->dev2;
         unsigned char *packet = psmouse->packet;
         int relative_packet = packet[0] & 0x08;
 
@@ -135,27 +142,35 @@ static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
         }
 
         if (relative_packet) {
-                input_report_rel(dev, REL_X,
-                                ((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
-                input_report_rel(dev, REL_Y,
-                                 -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
+                if (!dev2)
+                        printk(KERN_WARNING "lifebook.c: got relative packet "
+                                "but no relative device set up\n");
         } else if (lifebook_use_6byte_proto) {
-                input_report_abs(dev, ABS_X,
+                input_report_abs(dev1, ABS_X,
                                  ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
-                input_report_abs(dev, ABS_Y,
+                input_report_abs(dev1, ABS_Y,
                                  4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
         } else {
-                input_report_abs(dev, ABS_X,
+                input_report_abs(dev1, ABS_X,
                                  (packet[1] | ((packet[0] & 0x30) << 4)));
-                input_report_abs(dev, ABS_Y,
+                input_report_abs(dev1, ABS_Y,
                                  1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
         }
 
-        input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
-        input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
-        input_report_key(dev, BTN_TOUCH, packet[0] & 0x04);
+        input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04);
+        input_sync(dev1);
 
-        input_sync(dev);
+        if (dev2) {
+                if (relative_packet) {
+                        input_report_rel(dev2, REL_X,
+                                ((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
+                        input_report_rel(dev2, REL_Y,
+                                 -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
+                }
+                input_report_key(dev2, BTN_LEFT, packet[0] & 0x01);
+                input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02);
+                input_sync(dev2);
+        }
 
         return PSMOUSE_FULL_PACKET;
 }
@@ -179,6 +194,14 @@ static int lifebook_absolute_mode(struct psmouse *psmouse)
         return 0;
 }
 
+static void lifebook_relative_mode(struct psmouse *psmouse)
+{
+        struct ps2dev *ps2dev = &psmouse->ps2dev;
+        unsigned char param = 0x06;
+
+        ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
+}
+
 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
 {
         static const unsigned char params[] = { 0, 1, 2, 2, 3 };
@@ -195,6 +218,8 @@ static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolu
 static void lifebook_disconnect(struct psmouse *psmouse)
 {
         psmouse_reset(psmouse);
+        kfree(psmouse->private);
+        psmouse->private = NULL;
 }
 
 int lifebook_detect(struct psmouse *psmouse, int set_properties)
@@ -214,26 +239,74 @@ int lifebook_detect(struct psmouse *psmouse, int set_properties)
         return 0;
 }
 
+static int lifebook_create_relative_device(struct psmouse *psmouse)
+{
+        struct input_dev *dev2;
+        struct lifebook_data *priv;
+        int error = -ENOMEM;
+
+        priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL);
+        dev2 = input_allocate_device();
+        if (!priv || !dev2)
+                goto err_out;
+
+        priv->dev2 = dev2;
+        snprintf(priv->phys, sizeof(priv->phys),
+                 "%s/input1", psmouse->ps2dev.serio->phys);
+
+        dev2->phys = priv->phys;
+        dev2->name = "PS/2 Touchpad";
+        dev2->id.bustype = BUS_I8042;
+        dev2->id.vendor  = 0x0002;
+        dev2->id.product = PSMOUSE_LIFEBOOK;
+        dev2->id.version = 0x0000;
+        dev2->dev.parent = &psmouse->ps2dev.serio->dev;
+
+        dev2->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
+        dev2->relbit[LONG(REL_X)] = BIT(REL_X) | BIT(REL_Y);
+        dev2->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT);
+
+        error = input_register_device(priv->dev2);
+        if (error)
+                goto err_out;
+
+        psmouse->private = priv;
+        return 0;
+
+ err_out:
+        input_free_device(dev2);
+        kfree(priv);
+        return error;
+}
+
 int lifebook_init(struct psmouse *psmouse)
 {
-        struct input_dev *input_dev = psmouse->dev;
+        struct input_dev *dev1 = psmouse->dev;
         int max_coord = lifebook_use_6byte_proto ? 1024 : 4096;
 
         if (lifebook_absolute_mode(psmouse))
                 return -1;
 
-        input_dev->evbit[0] = BIT(EV_ABS) | BIT(EV_KEY) | BIT(EV_REL);
-        input_dev->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
-        input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
-        input_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
-        input_set_abs_params(input_dev, ABS_X, 0, max_coord, 0, 0);
-        input_set_abs_params(input_dev, ABS_Y, 0, max_coord, 0, 0);
+        dev1->evbit[0] = BIT(EV_ABS) | BIT(EV_KEY);
+        dev1->relbit[0] = 0;
+        dev1->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
+        input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0);
+        input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0);
+
+        if (!desired_serio_phys) {
+                if (lifebook_create_relative_device(psmouse)) {
+                        lifebook_relative_mode(psmouse);
+                        return -1;
+                }
+        }
 
         psmouse->protocol_handler = lifebook_process_byte;
         psmouse->set_resolution = lifebook_set_resolution;
         psmouse->disconnect = lifebook_disconnect;
         psmouse->reconnect  = lifebook_absolute_mode;
 
+        psmouse->model = lifebook_use_6byte_proto ? 6 : 3;
+
         /*
          * Use packet size = 3 even when using 6-byte protocol because
          * that's what POLL will return on Lifebooks (according to spec).