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Input: Add support of Synaptics Clickpad device

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The new type of touchpads can be detected via a new query command
0x0c. The clickpad flags are in cap[0]:4 and cap[1]:0 bits.

When the device is detected, the driver now reports only the left
button as the supported buttons so that X11 driver can detect that
the device is Clickpad. A Clickpad device gives the button events
only as the middle button. The kernel driver morphs to the left
button. The real handling of Clickpad is done rather in X driver
side.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Takashi Iwai
2010-04-19 10:37:21 -07:00
committed by Dmitry Torokhov
parent 6d327cb03f
commit 5f57d67da8
2 changed files with 34 additions and 5 deletions
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35
drivers/input/mouse/synaptics.c
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@@ -136,7 +136,8 @@ static int synaptics_capability(struct psmouse *psmouse)
if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
return -1;
priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
priv->ext_cap = 0;
priv->ext_cap = priv->ext_cap_0c = 0;
if (!SYN_CAP_VALID(priv->capabilities))
return -1;
@@ -149,7 +150,7 @@ static int synaptics_capability(struct psmouse *psmouse)
if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
printk(KERN_ERR "Synaptics claims to have extended capabilities,"
" but I'm not able to read them.");
" but I'm not able to read them.\n");
} else {
priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
@@ -161,6 +162,16 @@ static int synaptics_capability(struct psmouse *psmouse)
priv->ext_cap &= 0xff0fff;
}
}
if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) {
if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) {
printk(KERN_ERR "Synaptics claims to have extended capability 0x0c,"
" but I'm not able to read it.\n");
} else {
priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2];
}
}
return 0;
}
@@ -347,7 +358,15 @@ static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data
hw->left = (buf[0] & 0x01) ? 1 : 0;
hw->right = (buf[0] & 0x02) ? 1 : 0;
if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
/*
* Clickpad's button is transmitted as middle button,
* however, since it is primary button, we will report
* it as BTN_LEFT.
*/
hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
} else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
if (hw->w == 2)
hw->scroll = (signed char)(buf[1]);
@@ -592,6 +611,12 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
dev->absres[ABS_X] = priv->x_res;
dev->absres[ABS_Y] = priv->y_res;
if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
/* Clickpads report only left button */
__clear_bit(BTN_RIGHT, dev->keybit);
__clear_bit(BTN_MIDDLE, dev->keybit);
}
}
static void synaptics_disconnect(struct psmouse *psmouse)
@@ -696,10 +721,10 @@ int synaptics_init(struct psmouse *psmouse)
priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx\n",
printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n",
SYN_ID_MODEL(priv->identity),
SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
priv->model_id, priv->capabilities, priv->ext_cap);
priv->model_id, priv->capabilities, priv->ext_cap, priv->ext_cap_0c);
set_input_params(psmouse->dev, priv);