@@ -549,10 +549,61 @@ static int synaptics_parse_hw_state(const unsigned char buf[],
((buf[0] & 0x04) >> 1) |
((buf[3] & 0x04) >> 2));
+ if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
+ SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) &&
+ hw->w == 2) {
+ synaptics_parse_agm(buf, priv, hw);
+ return 1;
+ }
+
+ hw->x = (((buf[3] & 0x10) << 8) |
+ ((buf[1] & 0x0f) << 8) |
+ buf[4]);
+ hw->y = (((buf[3] & 0x20) << 7) |
+ ((buf[1] & 0xf0) << 4) |
+ buf[5]);
+ hw->z = buf[2];
+
hw->left = (buf[0] & 0x01) ? 1 : 0;
hw->right = (buf[0] & 0x02) ? 1 : 0;
- if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
+ if (SYN_CAP_FORCEPAD(priv->ext_cap_0c)) {
+ /*
+ * ForcePads, like Clickpads, use middle button
+ * bits to report primary button clicks.
+ * Unfortunately they report primary button not
+ * only when user presses on the pad above certain
+ * threshold, but also when there are more than one
+ * finger on the touchpad, which interferes with
+ * out multi-finger gestures.
+ */
+ if (hw->z == 0) {
+ /* No contacts */
+ priv->press = priv->report_press = false;
+ } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
+ /*
+ * Single-finger touch with pressure above
+ * the threshold. If pressure stays long
+ * enough, we'll start reporting primary
+ * button. We rely on the device continuing
+ * sending data even if finger does not
+ * move.
+ */
+ if (!priv->press) {
+ priv->press_start = jiffies;
+ priv->press = true;
+ } else if (time_after(jiffies,
+ priv->press_start +
+ msecs_to_jiffies(50))) {
+ priv->report_press = true;
+ }
+ } else {
+ priv->press = false;
+ }
+
+ hw->left = priv->report_press;
+
+ } else 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
@@ -571,21 +622,6 @@ static int synaptics_parse_hw_state(const unsigned char buf[],
hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
}
- if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
- SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) &&
- hw->w == 2) {
- synaptics_parse_agm(buf, priv, hw);
- return 1;
- }
-
- hw->x = (((buf[3] & 0x10) << 8) |
- ((buf[1] & 0x0f) << 8) |
- buf[4]);
- hw->y = (((buf[3] & 0x20) << 7) |
- ((buf[1] & 0xf0) << 4) |
- buf[5]);
- hw->z = buf[2];
-
if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
((buf[0] ^ buf[3]) & 0x02)) {
switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
@@ -78,6 +78,11 @@
* 2 0x08 image sensor image sensor tracks 5 fingers, but only
* reports 2.
* 2 0x20 report min query 0x0f gives min coord reported
+ * 2 0x80 forcepad forcepad is a variant of clickpad that
+ * does not have physical buttons but rather
+ * uses pressure above certain threshold to
+ * report primary clicks. Forcepads also have
+ * clickpad bit set.
*/
#define SYN_CAP_CLICKPAD(ex0c) ((ex0c) & 0x100000) /* 1-button ClickPad */
#define SYN_CAP_CLICKPAD2BTN(ex0c) ((ex0c) & 0x000100) /* 2-button ClickPad */
@@ -86,6 +91,7 @@
#define SYN_CAP_ADV_GESTURE(ex0c) ((ex0c) & 0x080000)
#define SYN_CAP_REDUCED_FILTERING(ex0c) ((ex0c) & 0x000400)
#define SYN_CAP_IMAGE_SENSOR(ex0c) ((ex0c) & 0x000800)
+#define SYN_CAP_FORCEPAD(ex0c) ((ex0c) & 0x008000)
/* synaptics modes query bits */
#define SYN_MODE_ABSOLUTE(m) ((m) & (1 << 7))
@@ -177,6 +183,11 @@ struct synaptics_data {
*/
struct synaptics_hw_state agm;
bool agm_pending; /* new AGM packet received */
+
+ /* ForcePad handling */
+ unsigned long press_start;
+ bool press;
+ bool report_press;
};
void synaptics_module_init(void);
This is a note to let you know that I have just added a patch titled Input: synaptics - add support for ForcePads to the linux-3.13.y-queue branch of the 3.13.y.z extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.13.y-queue This patch is scheduled to be released in version 3.13.11.8. If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.13.y.z tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Kamal ------ From 5983987344df496e585c38112d88fb98cfd71c9e Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov <dmitry.torokhov@gmail.com> Date: Sat, 30 Aug 2014 13:51:06 -0700 Subject: Input: synaptics - add support for ForcePads commit 5715fc764f7753d464dbe094b5ef9cffa6e479a4 upstream. ForcePads are found on HP EliteBook 1040 laptops. They lack any kind of physical buttons, instead they generate primary button click when user presses somewhat hard on the surface of the touchpad. Unfortunately they also report primary button click whenever there are 2 or more contacts on the pad, messing up all multi-finger gestures (2-finger scrolling, multi-finger tapping, etc). To cope with this behavior we introduce a delay (currently 50 msecs) in reporting primary press in case more contacts appear. Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- drivers/input/mouse/synaptics.c | 68 +++++++++++++++++++++++++++++++---------- drivers/input/mouse/synaptics.h | 11 +++++++ 2 files changed, 63 insertions(+), 16 deletions(-) -- 1.9.1