This is a note to let you know that I've just added the patch titled
Input: synaptics - fix middle button on Lenovo 2015 products
to the 3.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
input-synaptics-fix-middle-button-on-lenovo-2015-products.patch
and it can be found in the queue-3.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From dc5465dc8a6d5cae8a0e1d8826bdcb2e4cb261ab Mon Sep 17 00:00:00 2001
From: Dmitry Torokhov <[email protected]>
Date: Sun, 8 Mar 2015 22:30:43 -0700
Subject: Input: synaptics - fix middle button on Lenovo 2015 products
From: Dmitry Torokhov <[email protected]>
commit dc5465dc8a6d5cae8a0e1d8826bdcb2e4cb261ab upstream.
On the X1 Carbon 3rd gen (with a 2015 broadwell cpu), the physical middle
button of the trackstick (attached to the touchpad serio device, of course)
seems to get lost.
Actually, the touchpads reports 3 extra buttons, which falls in the switch
below to the '2' case. Let's handle the case of odd numbers also, so that
the middle button finds its way back.
Signed-off-by: Benjamin Tissoires <[email protected]>
Acked-by: Hans de Goede <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/input/mouse/synaptics.c | 44 +++++++++++++++++++---------------------
1 file changed, 21 insertions(+), 23 deletions(-)
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -658,6 +658,18 @@ static void synaptics_parse_agm(const un
priv->agm_pending = true;
}
+static void synaptics_parse_ext_buttons(const unsigned char buf[],
+ struct synaptics_data *priv,
+ struct synaptics_hw_state *hw)
+{
+ unsigned int ext_bits =
+ (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) + 1) >> 1;
+ unsigned int ext_mask = GENMASK(ext_bits - 1, 0);
+
+ hw->ext_buttons = buf[4] & ext_mask;
+ hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits;
+}
+
static bool is_forcepad;
static int synaptics_parse_hw_state(const unsigned char buf[],
@@ -744,28 +756,9 @@ static int synaptics_parse_hw_state(cons
hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
}
- if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
+ if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 0 &&
((buf[0] ^ buf[3]) & 0x02)) {
- switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01)
{
- default:
- /*
- * if nExtBtn is greater than 8 it should be
- * considered invalid and treated as 0
- */
- break;
- case 8:
- hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
- hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
- case 6:
- hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
- hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
- case 4:
- hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
- hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
- case 2:
- hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
- hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
- }
+ synaptics_parse_ext_buttons(buf, priv, hw);
}
} else {
hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
@@ -832,6 +825,7 @@ static void synaptics_report_buttons(str
{
struct input_dev *dev = psmouse->dev;
struct synaptics_data *priv = psmouse->private;
+ int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) + 1) >> 1;
int i;
input_report_key(dev, BTN_LEFT, hw->left);
@@ -845,8 +839,12 @@ static void synaptics_report_buttons(str
input_report_key(dev, BTN_BACK, hw->down);
}
- for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
- input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i));
+ for (i = 0; i < ext_bits; i++) {
+ input_report_key(dev, BTN_0 + 2 * i,
+ hw->ext_buttons & (1 << i));
+ input_report_key(dev, BTN_1 + 2 * i,
+ hw->ext_buttons & (1 << (i + ext_bits)));
+ }
}
static void synaptics_report_slot(struct input_dev *dev, int slot,
Patches currently in stable-queue which might be from [email protected]
are
queue-3.19/input-synaptics-split-synaptics_resolution-query-first.patch
queue-3.19/input-synaptics-query-min-dimensions-for-fw-v8.1.patch
queue-3.19/input-synaptics-fix-middle-button-on-lenovo-2015-products.patch
queue-3.19/input-synaptics-log-queried-and-quirked-dimension-values.patch
queue-3.19/input-synaptics-do-not-retrieve-the-board-id-on-old-firmwares.patch
queue-3.19/input-synaptics-remove-obsolete-min-max-quirk-for-x240.patch
queue-3.19/input-synaptics-handle-spurious-release-of-trackstick-buttons.patch
queue-3.19/input-synaptics-skip-quirks-when-post-2013-dimensions.patch
queue-3.19/input-synaptics-support-min-max-board-id-in-min_max_pnpid_table.patch
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