[kernel] r19952 - in dists/sid/linux/debian: . patches patches/features/all/input-mt
Ben Hutchings
benh at alioth.debian.org
Wed Mar 27 14:12:26 UTC 2013
Author: benh
Date: Wed Mar 27 14:12:25 2013
New Revision: 19952
Log:
Input: add support for Cypress PS/2 Trackpads (Closes: #703607), thanks to Apollon Oikonomopoulos
Added:
dists/sid/linux/debian/patches/features/all/input-mt/
dists/sid/linux/debian/patches/features/all/input-mt/Input-MT-Add-flags-to-input_mt_init_slots.patch
dists/sid/linux/debian/patches/features/all/input-mt/Input-MT-Add-in-kernel-tracking.patch
dists/sid/linux/debian/patches/features/all/input-mt/Input-MT-Handle-frame-synchronization-in-core.patch
dists/sid/linux/debian/patches/features/all/input-mt/Input-add-support-for-Cypress-PS-2-Trackpads.patch
dists/sid/linux/debian/patches/features/all/input-mt/Input-cypress_ps2-fix-trackpadi-found-in-Dell-XPS12.patch
Modified:
dists/sid/linux/debian/changelog
dists/sid/linux/debian/patches/series
Modified: dists/sid/linux/debian/changelog
==============================================================================
--- dists/sid/linux/debian/changelog Wed Mar 27 03:51:48 2013 (r19951)
+++ dists/sid/linux/debian/changelog Wed Mar 27 14:12:25 2013 (r19952)
@@ -1,3 +1,11 @@
+linux (3.2.41-3) UNRELEASED; urgency=low
+
+ * Input: MT: add tracking and frame synchronisation to core
+ * Input: add support for Cypress PS/2 Trackpads (Closes: #703607),
+ thanks to Apollon Oikonomopoulos
+
+ -- Ben Hutchings <ben at decadent.org.uk> Wed, 27 Mar 2013 14:10:40 +0000
+
linux (3.2.41-2) unstable; urgency=low
* [ia64] udeb: Remove efi-modules package; make kernel-image provide
Added: dists/sid/linux/debian/patches/features/all/input-mt/Input-MT-Add-flags-to-input_mt_init_slots.patch
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ dists/sid/linux/debian/patches/features/all/input-mt/Input-MT-Add-flags-to-input_mt_init_slots.patch Wed Mar 27 14:12:25 2013 (r19952)
@@ -0,0 +1,114 @@
+From: Henrik Rydberg <rydberg at euromail.se>
+Date: Sat, 11 Aug 2012 22:07:55 +0200
+Subject: Input: MT - Add flags to input_mt_init_slots()
+
+commit b4adbbefc2099476a4f1020041c99f52cf3cd67d upstream.
+
+Preparing to move more repeated code into the mt core, add a flags
+argument to the input_mt_slots_init() function.
+
+Reviewed-and-tested-by: Benjamin Tissoires <benjamin.tissoires at enac.fr>
+Tested-by: Ping Cheng <pingc at wacom.com>
+Acked-by: Dmitry Torokhov <dmitry.torokhov at gmail.com>
+Signed-off-by: Henrik Rydberg <rydberg at euromail.se>
+[bwh: Backported to wheezy:
+ - Introduce struct input_mt and use container_of() to find it from
+ input_dev::mt
+ - Rename input_mt_init_slot() to input_mt_init_slot_flags() and add a
+ backward-compatible wrapper]
+[Apollon Oikonomopoulos: fix slot initialization in input_mt_init_slots_flags]
+---
+--- a/drivers/input/input-mt.c
++++ b/drivers/input/input-mt.c
+@@ -14,6 +14,9 @@
+
+ #define TRKID_SGN ((TRKID_MAX + 1) >> 1)
+
++#define input_dev_to_mt(dev) \
++ ((dev)->mt ? container_of((dev)->mt, struct input_mt, slots[0]) : NULL)
++
+ /**
+ * input_mt_init_slots() - initialize MT input slots
+ * @dev: input device supporting MT events and finger tracking
+@@ -25,8 +28,10 @@
+ * May be called repeatedly. Returns -EINVAL if attempting to
+ * reinitialize with a different number of slots.
+ */
+-int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots)
++int input_mt_init_slots_flags(struct input_dev *dev, unsigned int num_slots,
++ unsigned int flags)
+ {
++ struct input_mt *mt;
+ int i;
+
+ if (!num_slots)
+@@ -34,21 +39,29 @@ int input_mt_init_slots(struct input_dev
+ if (dev->mt)
+ return dev->mtsize != num_slots ? -EINVAL : 0;
+
+- dev->mt = kcalloc(num_slots, sizeof(struct input_mt_slot), GFP_KERNEL);
+- if (!dev->mt)
++ mt = kzalloc(sizeof(*mt) + num_slots * sizeof(*mt->slots), GFP_KERNEL);
++ if (!mt)
+ return -ENOMEM;
+
+ dev->mtsize = num_slots;
++ mt->flags = flags;
+ input_set_abs_params(dev, ABS_MT_SLOT, 0, num_slots - 1, 0, 0);
+ input_set_abs_params(dev, ABS_MT_TRACKING_ID, 0, TRKID_MAX, 0, 0);
+ input_set_events_per_packet(dev, 6 * num_slots);
+
+ /* Mark slots as 'unused' */
+ for (i = 0; i < num_slots; i++)
+- input_mt_set_value(&dev->mt[i], ABS_MT_TRACKING_ID, -1);
++ input_mt_set_value(&mt->slots[i], ABS_MT_TRACKING_ID, -1);
+
++ dev->mt = &mt->slots[0];
+ return 0;
+ }
++EXPORT_SYMBOL(input_mt_init_slots_flags);
++
++int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots)
++{
++ return input_mt_init_slots_flags(dev, num_slots, 0);
++}
+ EXPORT_SYMBOL(input_mt_init_slots);
+
+ /**
+@@ -60,7 +73,7 @@ EXPORT_SYMBOL(input_mt_init_slots);
+ */
+ void input_mt_destroy_slots(struct input_dev *dev)
+ {
+- kfree(dev->mt);
++ kfree(input_dev_to_mt(dev));
+ dev->mt = NULL;
+ dev->mtsize = 0;
+ dev->slot = 0;
+--- a/include/linux/input/mt.h
++++ b/include/linux/input/mt.h
+@@ -23,6 +23,16 @@ struct input_mt_slot {
+ int abs[ABS_MT_LAST - ABS_MT_FIRST + 1];
+ };
+
++/**
++ * struct input_mt - state of tracked contacts
++ * @flags: input_mt operation flags
++ * @slots: array of slots holding current values of tracked contacts
++ */
++struct input_mt {
++ unsigned int flags;
++ struct input_mt_slot slots[];
++};
++
+ static inline void input_mt_set_value(struct input_mt_slot *slot,
+ unsigned code, int value)
+ {
+@@ -36,6 +46,8 @@ static inline int input_mt_get_value(con
+ }
+
+ int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots);
++int input_mt_init_slots_flags(struct input_dev *dev, unsigned int num_slots,
++ unsigned int flags);
+ void input_mt_destroy_slots(struct input_dev *dev);
+
+ static inline int input_mt_new_trkid(struct input_dev *dev)
Added: dists/sid/linux/debian/patches/features/all/input-mt/Input-MT-Add-in-kernel-tracking.patch
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ dists/sid/linux/debian/patches/features/all/input-mt/Input-MT-Add-in-kernel-tracking.patch Wed Mar 27 14:12:25 2013 (r19952)
@@ -0,0 +1,243 @@
+From: Henrik Rydberg <rydberg at euromail.se>
+Date: Sun, 12 Aug 2012 20:47:05 +0200
+Subject: Input: MT - Add in-kernel tracking
+
+commit 7c1a87897c75139dec258eb03e1a24fb73385b73 upstream.
+
+With the INPUT_MT_TRACK flag set, the function input_mt_assign_slots()
+can be used to match a new set of contacts against the currently used
+slots. The algorithm used is based on Lagrange relaxation, and performs
+very well in practice; slower than mtdev for a few corner cases, but
+faster in most commonly occuring cases.
+
+Tested-by: Benjamin Tissoires <benjamin.tissoires at enac.fr>
+Acked-by: Dmitry Torokhov <dmitry.torokhov at gmail.com>
+Signed-off-by: Henrik Rydberg <rydberg at euromail.se>
+---
+--- a/drivers/input/input-mt.c
++++ b/drivers/input/input-mt.c
+@@ -50,7 +50,7 @@ int input_mt_init_slots_flags(struct inp
+ mt = kzalloc(sizeof(*mt) + num_slots * sizeof(*mt->slots) +
+ num_slots * sizeof(*mt->slot_frame), GFP_KERNEL);
+ if (!mt)
+- return -ENOMEM;
++ goto err_mem;
+
+ dev->mtsize = num_slots;
+ mt->num_slots = num_slots;
+@@ -81,6 +81,12 @@ int input_mt_init_slots_flags(struct inp
+ }
+ if (flags & INPUT_MT_DIRECT)
+ __set_bit(INPUT_PROP_DIRECT, dev->propbit);
++ if (flags & INPUT_MT_TRACK) {
++ unsigned int n2 = num_slots * num_slots;
++ mt->red = kcalloc(n2, sizeof(*mt->red), GFP_KERNEL);
++ if (!mt->red)
++ goto err_mem;
++ }
+
+ /* Mark slots as 'unused' */
+ for (i = 0; i < num_slots; i++)
+@@ -88,6 +94,9 @@ int input_mt_init_slots_flags(struct inp
+
+ dev->mt = &mt->slots[0];
+ return 0;
++err_mem:
++ kfree(mt);
++ return -ENOMEM;
+ }
+ EXPORT_SYMBOL(input_mt_init_slots_flags);
+
+@@ -106,7 +115,11 @@ EXPORT_SYMBOL(input_mt_init_slots);
+ */
+ void input_mt_destroy_slots(struct input_dev *dev)
+ {
+- kfree(input_dev_to_mt(dev));
++ if (dev->mt) {
++ struct input_mt *mt = input_dev_to_mt(dev);
++ kfree(mt->red);
++ kfree(mt);
++ }
+ dev->mt = NULL;
+ dev->mtsize = 0;
+ dev->slot = 0;
+@@ -253,3 +266,131 @@ void input_mt_sync_frame(struct input_de
+ mt->frame++;
+ }
+ EXPORT_SYMBOL(input_mt_sync_frame);
++
++static int adjust_dual(int *begin, int step, int *end, int eq)
++{
++ int f, *p, s, c;
++
++ if (begin == end)
++ return 0;
++
++ f = *begin;
++ p = begin + step;
++ s = p == end ? f + 1 : *p;
++
++ for (; p != end; p += step)
++ if (*p < f)
++ s = f, f = *p;
++ else if (*p < s)
++ s = *p;
++
++ c = (f + s + 1) / 2;
++ if (c == 0 || (c > 0 && !eq))
++ return 0;
++ if (s < 0)
++ c *= 2;
++
++ for (p = begin; p != end; p += step)
++ *p -= c;
++
++ return (c < s && s <= 0) || (f >= 0 && f < c);
++}
++
++static void find_reduced_matrix(int *w, int nr, int nc, int nrc)
++{
++ int i, k, sum;
++
++ for (k = 0; k < nrc; k++) {
++ for (i = 0; i < nr; i++)
++ adjust_dual(w + i, nr, w + i + nrc, nr <= nc);
++ sum = 0;
++ for (i = 0; i < nrc; i += nr)
++ sum += adjust_dual(w + i, 1, w + i + nr, nc <= nr);
++ if (!sum)
++ break;
++ }
++}
++
++static int input_mt_set_matrix(struct input_mt *mt,
++ const struct input_mt_pos *pos, int num_pos)
++{
++ const struct input_mt_pos *p;
++ struct input_mt_slot *s;
++ int *w = mt->red;
++ int x, y;
++
++ for (s = mt->slots; s != mt->slots + mt->num_slots; s++) {
++ if (!input_mt_is_active(s))
++ continue;
++ x = input_mt_get_value(s, ABS_MT_POSITION_X);
++ y = input_mt_get_value(s, ABS_MT_POSITION_Y);
++ for (p = pos; p != pos + num_pos; p++) {
++ int dx = x - p->x, dy = y - p->y;
++ *w++ = dx * dx + dy * dy;
++ }
++ }
++
++ return w - mt->red;
++}
++
++static void input_mt_set_slots(struct input_mt *mt,
++ int *slots, int num_pos)
++{
++ struct input_mt_slot *s;
++ int *w = mt->red, *p;
++
++ for (p = slots; p != slots + num_pos; p++)
++ *p = -1;
++
++ for (s = mt->slots; s != mt->slots + mt->num_slots; s++) {
++ if (!input_mt_is_active(s))
++ continue;
++ for (p = slots; p != slots + num_pos; p++)
++ if (*w++ < 0)
++ *p = s - mt->slots;
++ }
++
++ for (s = mt->slots; s != mt->slots + mt->num_slots; s++) {
++ if (input_mt_is_active(s))
++ continue;
++ for (p = slots; p != slots + num_pos; p++)
++ if (*p < 0) {
++ *p = s - mt->slots;
++ break;
++ }
++ }
++}
++
++/**
++ * input_mt_assign_slots() - perform a best-match assignment
++ * @dev: input device with allocated MT slots
++ * @slots: the slot assignment to be filled
++ * @pos: the position array to match
++ * @num_pos: number of positions
++ *
++ * Performs a best match against the current contacts and returns
++ * the slot assignment list. New contacts are assigned to unused
++ * slots.
++ *
++ * Returns zero on success, or negative error in case of failure.
++ */
++int input_mt_assign_slots(struct input_dev *dev, int *slots,
++ const struct input_mt_pos *pos, int num_pos)
++{
++ struct input_mt *mt = input_dev_to_mt(dev);
++ int nrc;
++
++ if (!mt || !mt->red)
++ return -ENXIO;
++ if (num_pos > mt->num_slots)
++ return -EINVAL;
++ if (num_pos < 1)
++ return 0;
++
++ nrc = input_mt_set_matrix(mt, pos, num_pos);
++ find_reduced_matrix(mt->red, num_pos, nrc / num_pos, nrc);
++ input_mt_set_slots(mt, slots, num_pos);
++
++ return 0;
++}
++EXPORT_SYMBOL(input_mt_assign_slots);
+--- a/include/linux/input/mt.h
++++ b/include/linux/input/mt.h
+@@ -18,6 +18,8 @@
+ #define INPUT_MT_POINTER 0x0001 /* pointer device, e.g. trackpad */
+ #define INPUT_MT_DIRECT 0x0002 /* direct device, e.g. touchscreen */
+ #define INPUT_MT_DROP_UNUSED 0x0004 /* drop contacts not seen in frame */
++#define INPUT_MT_TRACK 0x0008 /* use in-kernel tracking */
++
+ /**
+ * struct input_mt_slot - represents the state of an input MT slot
+ * @abs: holds current values of ABS_MT axes for this slot
+@@ -39,6 +41,7 @@ struct input_mt {
+ unsigned int flags;
+ unsigned int frame;
+ unsigned int *slot_frame;
++ int *red;
+ struct input_mt_slot slots[];
+ };
+
+@@ -54,6 +57,11 @@ static inline int input_mt_get_value(con
+ return slot->abs[code - ABS_MT_FIRST];
+ }
+
++static inline bool input_mt_is_active(const struct input_mt_slot *slot)
++{
++ return input_mt_get_value(slot, ABS_MT_TRACKING_ID) >= 0;
++}
++
+ int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots);
+ int input_mt_init_slots_flags(struct input_dev *dev, unsigned int num_slots,
+ unsigned int flags);
+@@ -83,4 +91,16 @@ void input_mt_report_pointer_emulation(s
+
+ void input_mt_sync_frame(struct input_dev *dev);
+
++/**
++ * struct input_mt_pos - contact position
++ * @x: horizontal coordinate
++ * @y: vertical coordinate
++ */
++struct input_mt_pos {
++ s16 x, y;
++};
++
++int input_mt_assign_slots(struct input_dev *dev, int *slots,
++ const struct input_mt_pos *pos, int num_pos);
++
+ #endif
Added: dists/sid/linux/debian/patches/features/all/input-mt/Input-MT-Handle-frame-synchronization-in-core.patch
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ dists/sid/linux/debian/patches/features/all/input-mt/Input-MT-Handle-frame-synchronization-in-core.patch Wed Mar 27 14:12:25 2013 (r19952)
@@ -0,0 +1,184 @@
+From: Henrik Rydberg <rydberg at euromail.se>
+Date: Wed, 22 Aug 2012 20:43:22 +0200
+Subject: Input: MT - Handle frame synchronization in core
+
+commit 55e49089f4589908eb688742d2d7eff33b74ac78 upstream.
+
+Most MT drivers perform the same actions on frame synchronization.
+Some actions, like dropping unseen contacts, are also unnecessarily
+complex. Collect common frame synchronization tasks in a new function,
+input_mt_sync_frame(). Depending on the flags set, it drops unseen
+contacts and performs pointer emulation.
+
+With init flags and frame synchronization in place, most MT drivers
+can be simplified. First out are the bcm5974 and hid-multitouch
+drivers, following this patch.
+
+Reviewed-and-tested-by: Benjamin Tissoires <benjamin.tissoires at enac.fr>
+Tested-by: Ping Cheng <pingc at wacom.com>
+Acked-by: Dmitry Torokhov <dmitry.torokhov at gmail.com>
+Signed-off-by: Henrik Rydberg <rydberg at euromail.se>
+[bwh: Backported to wheezy:
+ - Add a separate array to track last frame each slot was used]
+---
+--- a/drivers/input/input-mt.c
++++ b/drivers/input/input-mt.c
+@@ -17,6 +17,14 @@
+ #define input_dev_to_mt(dev) \
+ ((dev)->mt ? container_of((dev)->mt, struct input_mt, slots[0]) : NULL)
+
++static void copy_abs(struct input_dev *dev, unsigned int dst, unsigned int src)
++{
++ if (dev->absinfo && test_bit(src, dev->absbit)) {
++ dev->absinfo[dst] = dev->absinfo[src];
++ dev->absbit[BIT_WORD(dst)] |= BIT_MASK(dst);
++ }
++}
++
+ /**
+ * input_mt_init_slots() - initialize MT input slots
+ * @dev: input device supporting MT events and finger tracking
+@@ -39,16 +47,41 @@ int input_mt_init_slots_flags(struct inp
+ if (dev->mt)
+ return dev->mtsize != num_slots ? -EINVAL : 0;
+
+- mt = kzalloc(sizeof(*mt) + num_slots * sizeof(*mt->slots), GFP_KERNEL);
++ mt = kzalloc(sizeof(*mt) + num_slots * sizeof(*mt->slots) +
++ num_slots * sizeof(*mt->slot_frame), GFP_KERNEL);
+ if (!mt)
+ return -ENOMEM;
+
+ dev->mtsize = num_slots;
++ mt->num_slots = num_slots;
+ mt->flags = flags;
++ mt->slot_frame = (unsigned int *)&mt->slots[num_slots];
+ input_set_abs_params(dev, ABS_MT_SLOT, 0, num_slots - 1, 0, 0);
+ input_set_abs_params(dev, ABS_MT_TRACKING_ID, 0, TRKID_MAX, 0, 0);
+ input_set_events_per_packet(dev, 6 * num_slots);
+
++ if (flags & (INPUT_MT_POINTER | INPUT_MT_DIRECT)) {
++ __set_bit(EV_KEY, dev->evbit);
++ __set_bit(BTN_TOUCH, dev->keybit);
++
++ copy_abs(dev, ABS_X, ABS_MT_POSITION_X);
++ copy_abs(dev, ABS_Y, ABS_MT_POSITION_Y);
++ copy_abs(dev, ABS_PRESSURE, ABS_MT_PRESSURE);
++ }
++ if (flags & INPUT_MT_POINTER) {
++ __set_bit(BTN_TOOL_FINGER, dev->keybit);
++ __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
++ if (num_slots >= 3)
++ __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
++ if (num_slots >= 4)
++ __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
++ if (num_slots >= 5)
++ __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
++ __set_bit(INPUT_PROP_POINTER, dev->propbit);
++ }
++ if (flags & INPUT_MT_DIRECT)
++ __set_bit(INPUT_PROP_DIRECT, dev->propbit);
++
+ /* Mark slots as 'unused' */
+ for (i = 0; i < num_slots; i++)
+ input_mt_set_value(&mt->slots[i], ABS_MT_TRACKING_ID, -1);
+@@ -96,17 +129,23 @@ EXPORT_SYMBOL(input_mt_destroy_slots);
+ void input_mt_report_slot_state(struct input_dev *dev,
+ unsigned int tool_type, bool active)
+ {
+- struct input_mt_slot *mt;
++ struct input_mt *mt = input_dev_to_mt(dev);
++ struct input_mt_slot *slot;
+ int id;
+
+- if (!dev->mt || !active) {
++ if (!mt)
++ return;
++
++ slot = &mt->slots[dev->slot];
++ mt->slot_frame[dev->slot] = mt->frame;
++
++ if (!active) {
+ input_event(dev, EV_ABS, ABS_MT_TRACKING_ID, -1);
+ return;
+ }
+
+- mt = &dev->mt[dev->slot];
+- id = input_mt_get_value(mt, ABS_MT_TRACKING_ID);
+- if (id < 0 || input_mt_get_value(mt, ABS_MT_TOOL_TYPE) != tool_type)
++ id = input_mt_get_value(slot, ABS_MT_TRACKING_ID);
++ if (id < 0 || input_mt_get_value(slot, ABS_MT_TOOL_TYPE) != tool_type)
+ id = input_mt_new_trkid(dev);
+
+ input_event(dev, EV_ABS, ABS_MT_TRACKING_ID, id);
+@@ -183,3 +222,34 @@ void input_mt_report_pointer_emulation(s
+ }
+ }
+ EXPORT_SYMBOL(input_mt_report_pointer_emulation);
++
++/**
++ * input_mt_sync_frame() - synchronize mt frame
++ * @dev: input device with allocated MT slots
++ *
++ * Close the frame and prepare the internal state for a new one.
++ * Depending on the flags, marks unused slots as inactive and performs
++ * pointer emulation.
++ */
++void input_mt_sync_frame(struct input_dev *dev)
++{
++ struct input_mt *mt = input_dev_to_mt(dev);
++ unsigned int i;
++
++ if (!mt)
++ return;
++
++ if (mt->flags & INPUT_MT_DROP_UNUSED) {
++ for (i = 0; i < mt->num_slots; i++) {
++ if (mt->slot_frame[i] == mt->frame)
++ continue;
++ input_mt_slot(dev, i);
++ input_event(dev, EV_ABS, ABS_MT_TRACKING_ID, -1);
++ }
++ }
++
++ input_mt_report_pointer_emulation(dev, (mt->flags & INPUT_MT_POINTER));
++
++ mt->frame++;
++}
++EXPORT_SYMBOL(input_mt_sync_frame);
+--- a/include/linux/input/mt.h
++++ b/include/linux/input/mt.h
+@@ -15,6 +15,9 @@
+
+ #define TRKID_MAX 0xffff
+
++#define INPUT_MT_POINTER 0x0001 /* pointer device, e.g. trackpad */
++#define INPUT_MT_DIRECT 0x0002 /* direct device, e.g. touchscreen */
++#define INPUT_MT_DROP_UNUSED 0x0004 /* drop contacts not seen in frame */
+ /**
+ * struct input_mt_slot - represents the state of an input MT slot
+ * @abs: holds current values of ABS_MT axes for this slot
+@@ -25,11 +28,17 @@ struct input_mt_slot {
+
+ /**
+ * struct input_mt - state of tracked contacts
++ * @num_slots: number of MT slots the device uses
+ * @flags: input_mt operation flags
++ * @frame: increases every time input_mt_sync_frame() is called
++ * @slot_frame: last frame at which input_mt_report_slot_state() was called
+ * @slots: array of slots holding current values of tracked contacts
+ */
+ struct input_mt {
++ int num_slots;
+ unsigned int flags;
++ unsigned int frame;
++ unsigned int *slot_frame;
+ struct input_mt_slot slots[];
+ };
+
+@@ -72,4 +81,6 @@ void input_mt_report_slot_state(struct i
+ void input_mt_report_finger_count(struct input_dev *dev, int count);
+ void input_mt_report_pointer_emulation(struct input_dev *dev, bool use_count);
+
++void input_mt_sync_frame(struct input_dev *dev);
++
+ #endif
Added: dists/sid/linux/debian/patches/features/all/input-mt/Input-add-support-for-Cypress-PS-2-Trackpads.patch
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ dists/sid/linux/debian/patches/features/all/input-mt/Input-add-support-for-Cypress-PS-2-Trackpads.patch Wed Mar 27 14:12:25 2013 (r19952)
@@ -0,0 +1,1049 @@
+From: Dudley Du <dudl at cypress.com>
+Date: Sat, 5 Jan 2013 00:14:22 -0800
+Subject: Input: add support for Cypress PS/2 Trackpads
+
+commit 0799a924bc93ba46a23e8e7e6b1431ab585fd2ea upstream.
+
+This driver, submitted on behalf of Cypress Semiconductor Corporation and
+additional contributors, provides support for the Cypress PS/2 Trackpad.
+
+Original code contributed by Dudley Du (Cypress Semiconductor Corporation),
+modified by Kamal Mostafa and Kyle Fazzari.
+
+BugLink: http://launchpad.net/bugs/978807
+
+Signed-off-by: Dudley Du <dudl at cypress.com>
+Signed-off-by: Kamal Mostafa <kamal at canonical.com>
+Signed-off-by: Kyle Fazzari <git at status.e4ward.com>
+Signed-off-by: Mario Limonciello <mario_limonciello at dell.com>
+Signed-off-by: Tim Gardner <tim.gardner at canonical.com>
+Acked-by: Herton Krzesinski <herton.krzesinski at canonical.com>
+Reviewed-by: Henrik Rydberg <rydberg at euromail.se>
+Reviewed-by: Dudley Du <dudl at cypress.com>
+Signed-off-by: Dmitry Torokhov <dmitry.torokhov at gmail.com>
+[Apollon Oikonomopoulos: Debian-specific: call input_mt_init_slots_flags
+ to initialize the Cypress PS/2 driver, instead of input_mt_init_slots.]
+---
+ drivers/input/mouse/Kconfig | 10 +
+ drivers/input/mouse/Makefile | 1 +
+ drivers/input/mouse/cypress_ps2.c | 725 ++++++++++++++++++++++++++++++++++++
+ drivers/input/mouse/cypress_ps2.h | 191 ++++++++++
+ drivers/input/mouse/psmouse-base.c | 32 ++
+ drivers/input/mouse/psmouse.h | 1 +
+ 6 files changed, 960 insertions(+)
+ create mode 100644 drivers/input/mouse/cypress_ps2.c
+ create mode 100644 drivers/input/mouse/cypress_ps2.h
+
+--- a/drivers/input/mouse/Kconfig
++++ b/drivers/input/mouse/Kconfig
+@@ -68,6 +68,16 @@ config MOUSE_PS2_SYNAPTICS
+
+ If unsure, say Y.
+
++config MOUSE_PS2_CYPRESS
++ bool "Cypress PS/2 mouse protocol extension" if EXPERT
++ default y
++ depends on MOUSE_PS2
++ help
++ Say Y here if you have a Cypress PS/2 Trackpad connected to
++ your system.
++
++ If unsure, say Y.
++
+ config MOUSE_PS2_LIFEBOOK
+ bool "Fujitsu Lifebook PS/2 mouse protocol extension" if EXPERT
+ default y
+--- a/drivers/input/mouse/Makefile
++++ b/drivers/input/mouse/Makefile
+@@ -31,3 +31,4 @@ psmouse-$(CONFIG_MOUSE_PS2_LIFEBOOK) +=
+ psmouse-$(CONFIG_MOUSE_PS2_SENTELIC) += sentelic.o
+ psmouse-$(CONFIG_MOUSE_PS2_TRACKPOINT) += trackpoint.o
+ psmouse-$(CONFIG_MOUSE_PS2_TOUCHKIT) += touchkit_ps2.o
++psmouse-$(CONFIG_MOUSE_PS2_CYPRESS) += cypress_ps2.o
+--- /dev/null
++++ b/drivers/input/mouse/cypress_ps2.c
+@@ -0,0 +1,725 @@
++/*
++ * Cypress Trackpad PS/2 mouse driver
++ *
++ * Copyright (c) 2012 Cypress Semiconductor Corporation.
++ *
++ * Author:
++ * Dudley Du <dudl at cypress.com>
++ *
++ * Additional contributors include:
++ * Kamal Mostafa <kamal at canonical.com>
++ * Kyle Fazzari <git at status.e4ward.com>
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ */
++
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/slab.h>
++#include <linux/serio.h>
++#include <linux/libps2.h>
++#include <linux/input.h>
++#include <linux/input/mt.h>
++#include <linux/sched.h>
++#include <linux/wait.h>
++
++#include "cypress_ps2.h"
++
++#undef CYTP_DEBUG_VERBOSE /* define this and DEBUG for more verbose dump */
++
++static void cypress_set_packet_size(struct psmouse *psmouse, unsigned int n)
++{
++ struct cytp_data *cytp = psmouse->private;
++ cytp->pkt_size = n;
++}
++
++static const unsigned char cytp_rate[] = {10, 20, 40, 60, 100, 200};
++static const unsigned char cytp_resolution[] = {0x00, 0x01, 0x02, 0x03};
++
++static int cypress_ps2_sendbyte(struct psmouse *psmouse, int value)
++{
++ struct ps2dev *ps2dev = &psmouse->ps2dev;
++
++ if (ps2_sendbyte(ps2dev, value & 0xff, CYTP_CMD_TIMEOUT) < 0) {
++ psmouse_dbg(psmouse,
++ "sending command 0x%02x failed, resp 0x%02x\n",
++ value & 0xff, ps2dev->nak);
++ if (ps2dev->nak == CYTP_PS2_RETRY)
++ return CYTP_PS2_RETRY;
++ else
++ return CYTP_PS2_ERROR;
++ }
++
++#ifdef CYTP_DEBUG_VERBOSE
++ psmouse_dbg(psmouse, "sending command 0x%02x succeeded, resp 0xfa\n",
++ value & 0xff);
++#endif
++
++ return 0;
++}
++
++static int cypress_ps2_ext_cmd(struct psmouse *psmouse, unsigned short cmd,
++ unsigned char data)
++{
++ struct ps2dev *ps2dev = &psmouse->ps2dev;
++ int tries = CYTP_PS2_CMD_TRIES;
++ int rc;
++
++ ps2_begin_command(ps2dev);
++
++ do {
++ /*
++ * Send extension command byte (0xE8 or 0xF3).
++ * If sending the command fails, send recovery command
++ * to make the device return to the ready state.
++ */
++ rc = cypress_ps2_sendbyte(psmouse, cmd & 0xff);
++ if (rc == CYTP_PS2_RETRY) {
++ rc = cypress_ps2_sendbyte(psmouse, 0x00);
++ if (rc == CYTP_PS2_RETRY)
++ rc = cypress_ps2_sendbyte(psmouse, 0x0a);
++ }
++ if (rc == CYTP_PS2_ERROR)
++ continue;
++
++ rc = cypress_ps2_sendbyte(psmouse, data);
++ if (rc == CYTP_PS2_RETRY)
++ rc = cypress_ps2_sendbyte(psmouse, data);
++ if (rc == CYTP_PS2_ERROR)
++ continue;
++ else
++ break;
++ } while (--tries > 0);
++
++ ps2_end_command(ps2dev);
++
++ return rc;
++}
++
++static int cypress_ps2_read_cmd_status(struct psmouse *psmouse,
++ unsigned char cmd,
++ unsigned char *param)
++{
++ int rc;
++ struct ps2dev *ps2dev = &psmouse->ps2dev;
++ enum psmouse_state old_state;
++ int pktsize;
++
++ ps2_begin_command(&psmouse->ps2dev);
++
++ old_state = psmouse->state;
++ psmouse->state = PSMOUSE_CMD_MODE;
++ psmouse->pktcnt = 0;
++
++ pktsize = (cmd == CYTP_CMD_READ_TP_METRICS) ? 8 : 3;
++ memset(param, 0, pktsize);
++
++ rc = cypress_ps2_sendbyte(psmouse, 0xe9);
++ if (rc < 0)
++ goto out;
++
++ wait_event_timeout(ps2dev->wait,
++ (psmouse->pktcnt >= pktsize),
++ msecs_to_jiffies(CYTP_CMD_TIMEOUT));
++
++ memcpy(param, psmouse->packet, pktsize);
++
++ psmouse_dbg(psmouse, "Command 0x%02x response data (0x): %*ph\n",
++ cmd, pktsize, param);
++
++out:
++ psmouse->state = old_state;
++ psmouse->pktcnt = 0;
++
++ ps2_end_command(&psmouse->ps2dev);
++
++ return rc;
++}
++
++static bool cypress_verify_cmd_state(struct psmouse *psmouse,
++ unsigned char cmd, unsigned char *param)
++{
++ bool rate_match = false;
++ bool resolution_match = false;
++ int i;
++
++ /* callers will do further checking. */
++ if (cmd == CYTP_CMD_READ_CYPRESS_ID ||
++ cmd == CYTP_CMD_STANDARD_MODE ||
++ cmd == CYTP_CMD_READ_TP_METRICS)
++ return true;
++
++ if ((~param[0] & DFLT_RESP_BITS_VALID) == DFLT_RESP_BITS_VALID &&
++ (param[0] & DFLT_RESP_BIT_MODE) == DFLT_RESP_STREAM_MODE) {
++ for (i = 0; i < sizeof(cytp_resolution); i++)
++ if (cytp_resolution[i] == param[1])
++ resolution_match = true;
++
++ for (i = 0; i < sizeof(cytp_rate); i++)
++ if (cytp_rate[i] == param[2])
++ rate_match = true;
++
++ if (resolution_match && rate_match)
++ return true;
++ }
++
++ psmouse_dbg(psmouse, "verify cmd state failed.\n");
++ return false;
++}
++
++static int cypress_send_ext_cmd(struct psmouse *psmouse, unsigned char cmd,
++ unsigned char *param)
++{
++ int tries = CYTP_PS2_CMD_TRIES;
++ int rc;
++
++ psmouse_dbg(psmouse, "send extension cmd 0x%02x, [%d %d %d %d]\n",
++ cmd, DECODE_CMD_AA(cmd), DECODE_CMD_BB(cmd),
++ DECODE_CMD_CC(cmd), DECODE_CMD_DD(cmd));
++
++ do {
++ cypress_ps2_ext_cmd(psmouse,
++ PSMOUSE_CMD_SETRES, DECODE_CMD_DD(cmd));
++ cypress_ps2_ext_cmd(psmouse,
++ PSMOUSE_CMD_SETRES, DECODE_CMD_CC(cmd));
++ cypress_ps2_ext_cmd(psmouse,
++ PSMOUSE_CMD_SETRES, DECODE_CMD_BB(cmd));
++ cypress_ps2_ext_cmd(psmouse,
++ PSMOUSE_CMD_SETRES, DECODE_CMD_AA(cmd));
++
++ rc = cypress_ps2_read_cmd_status(psmouse, cmd, param);
++ if (rc)
++ continue;
++
++ if (cypress_verify_cmd_state(psmouse, cmd, param))
++ return 0;
++
++ } while (--tries > 0);
++
++ return -EIO;
++}
++
++int cypress_detect(struct psmouse *psmouse, bool set_properties)
++{
++ unsigned char param[3];
++
++ if (cypress_send_ext_cmd(psmouse, CYTP_CMD_READ_CYPRESS_ID, param))
++ return -ENODEV;
++
++ /* Check for Cypress Trackpad signature bytes: 0x33 0xCC */
++ if (param[0] != 0x33 || param[1] != 0xCC)
++ return -ENODEV;
++
++ if (set_properties) {
++ psmouse->vendor = "Cypress";
++ psmouse->name = "Trackpad";
++ }
++
++ return 0;
++}
++
++static int cypress_read_fw_version(struct psmouse *psmouse)
++{
++ struct cytp_data *cytp = psmouse->private;
++ unsigned char param[3];
++
++ if (cypress_send_ext_cmd(psmouse, CYTP_CMD_READ_CYPRESS_ID, param))
++ return -ENODEV;
++
++ /* Check for Cypress Trackpad signature bytes: 0x33 0xCC */
++ if (param[0] != 0x33 || param[1] != 0xCC)
++ return -ENODEV;
++
++ cytp->fw_version = param[2] & FW_VERSION_MASX;
++ cytp->tp_metrics_supported = (param[2] & TP_METRICS_MASK) ? 1 : 0;
++
++ psmouse_dbg(psmouse, "cytp->fw_version = %d\n", cytp->fw_version);
++ psmouse_dbg(psmouse, "cytp->tp_metrics_supported = %d\n",
++ cytp->tp_metrics_supported);
++
++ return 0;
++}
++
++static int cypress_read_tp_metrics(struct psmouse *psmouse)
++{
++ struct cytp_data *cytp = psmouse->private;
++ unsigned char param[8];
++
++ /* set default values for tp metrics. */
++ cytp->tp_width = CYTP_DEFAULT_WIDTH;
++ cytp->tp_high = CYTP_DEFAULT_HIGH;
++ cytp->tp_max_abs_x = CYTP_ABS_MAX_X;
++ cytp->tp_max_abs_y = CYTP_ABS_MAX_Y;
++ cytp->tp_min_pressure = CYTP_MIN_PRESSURE;
++ cytp->tp_max_pressure = CYTP_MAX_PRESSURE;
++ cytp->tp_res_x = cytp->tp_max_abs_x / cytp->tp_width;
++ cytp->tp_res_y = cytp->tp_max_abs_y / cytp->tp_high;
++
++ memset(param, 0, sizeof(param));
++ if (cypress_send_ext_cmd(psmouse, CYTP_CMD_READ_TP_METRICS, param) == 0) {
++ /* Update trackpad parameters. */
++ cytp->tp_max_abs_x = (param[1] << 8) | param[0];
++ cytp->tp_max_abs_y = (param[3] << 8) | param[2];
++ cytp->tp_min_pressure = param[4];
++ cytp->tp_max_pressure = param[5];
++ }
++
++ if (!cytp->tp_max_pressure ||
++ cytp->tp_max_pressure < cytp->tp_min_pressure ||
++ !cytp->tp_width || !cytp->tp_high ||
++ !cytp->tp_max_abs_x ||
++ cytp->tp_max_abs_x < cytp->tp_width ||
++ !cytp->tp_max_abs_y ||
++ cytp->tp_max_abs_y < cytp->tp_high)
++ return -EINVAL;
++
++ cytp->tp_res_x = cytp->tp_max_abs_x / cytp->tp_width;
++ cytp->tp_res_y = cytp->tp_max_abs_y / cytp->tp_high;
++
++#ifdef CYTP_DEBUG_VERBOSE
++ psmouse_dbg(psmouse, "Dump trackpad hardware configuration as below:\n");
++ psmouse_dbg(psmouse, "cytp->tp_width = %d\n", cytp->tp_width);
++ psmouse_dbg(psmouse, "cytp->tp_high = %d\n", cytp->tp_high);
++ psmouse_dbg(psmouse, "cytp->tp_max_abs_x = %d\n", cytp->tp_max_abs_x);
++ psmouse_dbg(psmouse, "cytp->tp_max_abs_y = %d\n", cytp->tp_max_abs_y);
++ psmouse_dbg(psmouse, "cytp->tp_min_pressure = %d\n", cytp->tp_min_pressure);
++ psmouse_dbg(psmouse, "cytp->tp_max_pressure = %d\n", cytp->tp_max_pressure);
++ psmouse_dbg(psmouse, "cytp->tp_res_x = %d\n", cytp->tp_res_x);
++ psmouse_dbg(psmouse, "cytp->tp_res_y = %d\n", cytp->tp_res_y);
++
++ psmouse_dbg(psmouse, "tp_type_APA = %d\n",
++ (param[6] & TP_METRICS_BIT_APA) ? 1 : 0);
++ psmouse_dbg(psmouse, "tp_type_MTG = %d\n",
++ (param[6] & TP_METRICS_BIT_MTG) ? 1 : 0);
++ psmouse_dbg(psmouse, "tp_palm = %d\n",
++ (param[6] & TP_METRICS_BIT_PALM) ? 1 : 0);
++ psmouse_dbg(psmouse, "tp_stubborn = %d\n",
++ (param[6] & TP_METRICS_BIT_STUBBORN) ? 1 : 0);
++ psmouse_dbg(psmouse, "tp_1f_jitter = %d\n",
++ (param[6] & TP_METRICS_BIT_1F_JITTER) >> 2);
++ psmouse_dbg(psmouse, "tp_2f_jitter = %d\n",
++ (param[6] & TP_METRICS_BIT_2F_JITTER) >> 4);
++ psmouse_dbg(psmouse, "tp_1f_spike = %d\n",
++ param[7] & TP_METRICS_BIT_1F_SPIKE);
++ psmouse_dbg(psmouse, "tp_2f_spike = %d\n",
++ (param[7] & TP_METRICS_BIT_2F_SPIKE) >> 2);
++ psmouse_dbg(psmouse, "tp_abs_packet_format_set = %d\n",
++ (param[7] & TP_METRICS_BIT_ABS_PKT_FORMAT_SET) >> 4);
++#endif
++
++ return 0;
++}
++
++static int cypress_query_hardware(struct psmouse *psmouse)
++{
++ struct cytp_data *cytp = psmouse->private;
++ int ret;
++
++ ret = cypress_read_fw_version(psmouse);
++ if (ret)
++ return ret;
++
++ if (cytp->tp_metrics_supported) {
++ ret = cypress_read_tp_metrics(psmouse);
++ if (ret)
++ return ret;
++ }
++
++ return 0;
++}
++
++static int cypress_set_absolute_mode(struct psmouse *psmouse)
++{
++ struct cytp_data *cytp = psmouse->private;
++ unsigned char param[3];
++
++ if (cypress_send_ext_cmd(psmouse, CYTP_CMD_ABS_WITH_PRESSURE_MODE, param) < 0)
++ return -1;
++
++ cytp->mode = (cytp->mode & ~CYTP_BIT_ABS_REL_MASK)
++ | CYTP_BIT_ABS_PRESSURE;
++ cypress_set_packet_size(psmouse, 5);
++
++ return 0;
++}
++
++/*
++ * Reset trackpad device.
++ * This is also the default mode when trackpad powered on.
++ */
++static void cypress_reset(struct psmouse *psmouse)
++{
++ struct cytp_data *cytp = psmouse->private;
++
++ cytp->mode = 0;
++
++ psmouse_reset(psmouse);
++}
++
++static int cypress_set_input_params(struct input_dev *input,
++ struct cytp_data *cytp)
++{
++ int ret;
++
++ if (!cytp->tp_res_x || !cytp->tp_res_y)
++ return -EINVAL;
++
++ __set_bit(EV_ABS, input->evbit);
++ input_set_abs_params(input, ABS_X, 0, cytp->tp_max_abs_x, 0, 0);
++ input_set_abs_params(input, ABS_Y, 0, cytp->tp_max_abs_y, 0, 0);
++ input_set_abs_params(input, ABS_PRESSURE,
++ cytp->tp_min_pressure, cytp->tp_max_pressure, 0, 0);
++ input_set_abs_params(input, ABS_TOOL_WIDTH, 0, 255, 0, 0);
++
++ /* finger position */
++ input_set_abs_params(input, ABS_MT_POSITION_X, 0, cytp->tp_max_abs_x, 0, 0);
++ input_set_abs_params(input, ABS_MT_POSITION_Y, 0, cytp->tp_max_abs_y, 0, 0);
++ input_set_abs_params(input, ABS_MT_PRESSURE, 0, 255, 0, 0);
++
++ ret = input_mt_init_slots_flags(input, CYTP_MAX_MT_SLOTS,
++ INPUT_MT_DROP_UNUSED|INPUT_MT_TRACK);
++ if (ret < 0)
++ return ret;
++
++ __set_bit(INPUT_PROP_SEMI_MT, input->propbit);
++
++ input_abs_set_res(input, ABS_X, cytp->tp_res_x);
++ input_abs_set_res(input, ABS_Y, cytp->tp_res_y);
++
++ input_abs_set_res(input, ABS_MT_POSITION_X, cytp->tp_res_x);
++ input_abs_set_res(input, ABS_MT_POSITION_Y, cytp->tp_res_y);
++
++ __set_bit(BTN_TOUCH, input->keybit);
++ __set_bit(BTN_TOOL_FINGER, input->keybit);
++ __set_bit(BTN_TOOL_DOUBLETAP, input->keybit);
++ __set_bit(BTN_TOOL_TRIPLETAP, input->keybit);
++ __set_bit(BTN_TOOL_QUADTAP, input->keybit);
++ __set_bit(BTN_TOOL_QUINTTAP, input->keybit);
++
++ __clear_bit(EV_REL, input->evbit);
++ __clear_bit(REL_X, input->relbit);
++ __clear_bit(REL_Y, input->relbit);
++
++ __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
++ __set_bit(EV_KEY, input->evbit);
++ __set_bit(BTN_LEFT, input->keybit);
++ __set_bit(BTN_RIGHT, input->keybit);
++ __set_bit(BTN_MIDDLE, input->keybit);
++
++ input_set_drvdata(input, cytp);
++
++ return 0;
++}
++
++static int cypress_get_finger_count(unsigned char header_byte)
++{
++ unsigned char bits6_7;
++ int finger_count;
++
++ bits6_7 = header_byte >> 6;
++ finger_count = bits6_7 & 0x03;
++
++ if (finger_count == 1)
++ return 1;
++
++ if (header_byte & ABS_HSCROLL_BIT) {
++ /* HSCROLL gets added on to 0 finger count. */
++ switch (finger_count) {
++ case 0: return 4;
++ case 2: return 5;
++ default:
++ /* Invalid contact (e.g. palm). Ignore it. */
++ return -1;
++ }
++ }
++
++ return finger_count;
++}
++
++
++static int cypress_parse_packet(struct psmouse *psmouse,
++ struct cytp_data *cytp, struct cytp_report_data *report_data)
++{
++ unsigned char *packet = psmouse->packet;
++ unsigned char header_byte = packet[0];
++ int contact_cnt;
++
++ memset(report_data, 0, sizeof(struct cytp_report_data));
++
++ contact_cnt = cypress_get_finger_count(header_byte);
++
++ if (contact_cnt < 0) /* e.g. palm detect */
++ return -EINVAL;
++
++ report_data->contact_cnt = contact_cnt;
++
++ report_data->tap = (header_byte & ABS_MULTIFINGER_TAP) ? 1 : 0;
++
++ if (report_data->contact_cnt == 1) {
++ report_data->contacts[0].x =
++ ((packet[1] & 0x70) << 4) | packet[2];
++ report_data->contacts[0].y =
++ ((packet[1] & 0x07) << 8) | packet[3];
++ if (cytp->mode & CYTP_BIT_ABS_PRESSURE)
++ report_data->contacts[0].z = packet[4];
++
++ } else if (report_data->contact_cnt >= 2) {
++ report_data->contacts[0].x =
++ ((packet[1] & 0x70) << 4) | packet[2];
++ report_data->contacts[0].y =
++ ((packet[1] & 0x07) << 8) | packet[3];
++ if (cytp->mode & CYTP_BIT_ABS_PRESSURE)
++ report_data->contacts[0].z = packet[4];
++
++ report_data->contacts[1].x =
++ ((packet[5] & 0xf0) << 4) | packet[6];
++ report_data->contacts[1].y =
++ ((packet[5] & 0x0f) << 8) | packet[7];
++ if (cytp->mode & CYTP_BIT_ABS_PRESSURE)
++ report_data->contacts[1].z = report_data->contacts[0].z;
++ }
++
++ report_data->left = (header_byte & BTN_LEFT_BIT) ? 1 : 0;
++ report_data->right = (header_byte & BTN_RIGHT_BIT) ? 1 : 0;
++
++ /*
++ * This is only true if one of the mouse buttons were tapped. Make
++ * sure it doesn't turn into a click. The regular tap-to-click
++ * functionality will handle that on its own. If we don't do this,
++ * disabling tap-to-click won't affect the mouse button zones.
++ */
++ if (report_data->tap)
++ report_data->left = 0;
++
++#ifdef CYTP_DEBUG_VERBOSE
++ {
++ int i;
++ int n = report_data->contact_cnt;
++ psmouse_dbg(psmouse, "Dump parsed report data as below:\n");
++ psmouse_dbg(psmouse, "contact_cnt = %d\n",
++ report_data->contact_cnt);
++ if (n > CYTP_MAX_MT_SLOTS)
++ n = CYTP_MAX_MT_SLOTS;
++ for (i = 0; i < n; i++)
++ psmouse_dbg(psmouse, "contacts[%d] = {%d, %d, %d}\n", i,
++ report_data->contacts[i].x,
++ report_data->contacts[i].y,
++ report_data->contacts[i].z);
++ psmouse_dbg(psmouse, "left = %d\n", report_data->left);
++ psmouse_dbg(psmouse, "right = %d\n", report_data->right);
++ psmouse_dbg(psmouse, "middle = %d\n", report_data->middle);
++ }
++#endif
++
++ return 0;
++}
++
++static void cypress_process_packet(struct psmouse *psmouse, bool zero_pkt)
++{
++ int i;
++ struct input_dev *input = psmouse->dev;
++ struct cytp_data *cytp = psmouse->private;
++ struct cytp_report_data report_data;
++ struct cytp_contact *contact;
++ struct input_mt_pos pos[CYTP_MAX_MT_SLOTS];
++ int slots[CYTP_MAX_MT_SLOTS];
++ int n;
++
++ if (cypress_parse_packet(psmouse, cytp, &report_data))
++ return;
++
++ n = report_data.contact_cnt;
++
++ if (n > CYTP_MAX_MT_SLOTS)
++ n = CYTP_MAX_MT_SLOTS;
++
++ for (i = 0; i < n; i++) {
++ contact = &report_data.contacts[i];
++ pos[i].x = contact->x;
++ pos[i].y = contact->y;
++ }
++
++ input_mt_assign_slots(input, slots, pos, n);
++
++ for (i = 0; i < n; i++) {
++ contact = &report_data.contacts[i];
++ input_mt_slot(input, slots[i]);
++ input_mt_report_slot_state(input, MT_TOOL_FINGER, true);
++ input_report_abs(input, ABS_MT_POSITION_X, contact->x);
++ input_report_abs(input, ABS_MT_POSITION_Y, contact->y);
++ input_report_abs(input, ABS_MT_PRESSURE, contact->z);
++ }
++
++ input_mt_sync_frame(input);
++
++ input_mt_report_finger_count(input, report_data.contact_cnt);
++
++ input_report_key(input, BTN_LEFT, report_data.left);
++ input_report_key(input, BTN_RIGHT, report_data.right);
++ input_report_key(input, BTN_MIDDLE, report_data.middle);
++
++ input_sync(input);
++}
++
++static psmouse_ret_t cypress_validate_byte(struct psmouse *psmouse)
++{
++ int contact_cnt;
++ int index = psmouse->pktcnt - 1;
++ unsigned char *packet = psmouse->packet;
++ struct cytp_data *cytp = psmouse->private;
++
++ if (index < 0 || index > cytp->pkt_size)
++ return PSMOUSE_BAD_DATA;
++
++ if (index == 0 && (packet[0] & 0xfc) == 0) {
++ /* call packet process for reporting finger leave. */
++ cypress_process_packet(psmouse, 1);
++ return PSMOUSE_FULL_PACKET;
++ }
++
++ /*
++ * Perform validation (and adjust packet size) based only on the
++ * first byte; allow all further bytes through.
++ */
++ if (index != 0)
++ return PSMOUSE_GOOD_DATA;
++
++ /*
++ * If absolute/relative mode bit has not been set yet, just pass
++ * the byte through.
++ */
++ if ((cytp->mode & CYTP_BIT_ABS_REL_MASK) == 0)
++ return PSMOUSE_GOOD_DATA;
++
++ if ((packet[0] & 0x08) == 0x08)
++ return PSMOUSE_BAD_DATA;
++
++ contact_cnt = cypress_get_finger_count(packet[0]);
++
++ if (contact_cnt < 0)
++ return PSMOUSE_BAD_DATA;
++
++ if (cytp->mode & CYTP_BIT_ABS_NO_PRESSURE)
++ cypress_set_packet_size(psmouse, contact_cnt == 2 ? 7 : 4);
++ else
++ cypress_set_packet_size(psmouse, contact_cnt == 2 ? 8 : 5);
++
++ return PSMOUSE_GOOD_DATA;
++}
++
++static psmouse_ret_t cypress_protocol_handler(struct psmouse *psmouse)
++{
++ struct cytp_data *cytp = psmouse->private;
++
++ if (psmouse->pktcnt >= cytp->pkt_size) {
++ cypress_process_packet(psmouse, 0);
++ return PSMOUSE_FULL_PACKET;
++ }
++
++ return cypress_validate_byte(psmouse);
++}
++
++static void cypress_set_rate(struct psmouse *psmouse, unsigned int rate)
++{
++ struct cytp_data *cytp = psmouse->private;
++
++ if (rate >= 80) {
++ psmouse->rate = 80;
++ cytp->mode |= CYTP_BIT_HIGH_RATE;
++ } else {
++ psmouse->rate = 40;
++ cytp->mode &= ~CYTP_BIT_HIGH_RATE;
++ }
++
++ ps2_command(&psmouse->ps2dev, (unsigned char *)&psmouse->rate,
++ PSMOUSE_CMD_SETRATE);
++}
++
++static void cypress_disconnect(struct psmouse *psmouse)
++{
++ cypress_reset(psmouse);
++ kfree(psmouse->private);
++ psmouse->private = NULL;
++}
++
++static int cypress_reconnect(struct psmouse *psmouse)
++{
++ int tries = CYTP_PS2_CMD_TRIES;
++ int rc;
++
++ do {
++ cypress_reset(psmouse);
++ rc = cypress_detect(psmouse, false);
++ } while (rc && (--tries > 0));
++
++ if (rc) {
++ psmouse_err(psmouse, "Reconnect: unable to detect trackpad.\n");
++ return -1;
++ }
++
++ if (cypress_set_absolute_mode(psmouse)) {
++ psmouse_err(psmouse, "Reconnect: Unable to initialize Cypress absolute mode.\n");
++ return -1;
++ }
++
++ return 0;
++}
++
++int cypress_init(struct psmouse *psmouse)
++{
++ struct cytp_data *cytp;
++
++ cytp = (struct cytp_data *)kzalloc(sizeof(struct cytp_data), GFP_KERNEL);
++ psmouse->private = (void *)cytp;
++ if (cytp == NULL)
++ return -ENOMEM;
++
++ cypress_reset(psmouse);
++
++ psmouse->pktsize = 8;
++
++ if (cypress_query_hardware(psmouse)) {
++ psmouse_err(psmouse, "Unable to query Trackpad hardware.\n");
++ goto err_exit;
++ }
++
++ if (cypress_set_absolute_mode(psmouse)) {
++ psmouse_err(psmouse, "init: Unable to initialize Cypress absolute mode.\n");
++ goto err_exit;
++ }
++
++ if (cypress_set_input_params(psmouse->dev, cytp) < 0) {
++ psmouse_err(psmouse, "init: Unable to set input params.\n");
++ goto err_exit;
++ }
++
++ psmouse->model = 1;
++ psmouse->protocol_handler = cypress_protocol_handler;
++ psmouse->set_rate = cypress_set_rate;
++ psmouse->disconnect = cypress_disconnect;
++ psmouse->reconnect = cypress_reconnect;
++ psmouse->cleanup = cypress_reset;
++ psmouse->resync_time = 0;
++
++ return 0;
++
++err_exit:
++ /*
++ * Reset Cypress Trackpad as a standard mouse. Then
++ * let psmouse driver commmunicating with it as default PS2 mouse.
++ */
++ cypress_reset(psmouse);
++
++ psmouse->private = NULL;
++ kfree(cytp);
++
++ return -1;
++}
++
++bool cypress_supported(void)
++{
++ return true;
++}
+--- /dev/null
++++ b/drivers/input/mouse/cypress_ps2.h
+@@ -0,0 +1,191 @@
++#ifndef _CYPRESS_PS2_H
++#define _CYPRESS_PS2_H
++
++#include "psmouse.h"
++
++#define CMD_BITS_MASK 0x03
++#define COMPOSIT(x, s) (((x) & CMD_BITS_MASK) << (s))
++
++#define ENCODE_CMD(aa, bb, cc, dd) \
++ (COMPOSIT((aa), 6) | COMPOSIT((bb), 4) | COMPOSIT((cc), 2) | COMPOSIT((dd), 0))
++#define CYTP_CMD_ABS_NO_PRESSURE_MODE ENCODE_CMD(0, 1, 0, 0)
++#define CYTP_CMD_ABS_WITH_PRESSURE_MODE ENCODE_CMD(0, 1, 0, 1)
++#define CYTP_CMD_SMBUS_MODE ENCODE_CMD(0, 1, 1, 0)
++#define CYTP_CMD_STANDARD_MODE ENCODE_CMD(0, 2, 0, 0) /* not implemented yet. */
++#define CYTP_CMD_CYPRESS_REL_MODE ENCODE_CMD(1, 1, 1, 1) /* not implemented yet. */
++#define CYTP_CMD_READ_CYPRESS_ID ENCODE_CMD(0, 0, 0, 0)
++#define CYTP_CMD_READ_TP_METRICS ENCODE_CMD(0, 0, 0, 1)
++#define CYTP_CMD_SET_HSCROLL_WIDTH(w) ENCODE_CMD(1, 1, 0, (w))
++#define CYTP_CMD_SET_HSCROLL_MASK ENCODE_CMD(1, 1, 0, 0)
++#define CYTP_CMD_SET_VSCROLL_WIDTH(w) ENCODE_CMD(1, 2, 0, (w))
++#define CYTP_CMD_SET_VSCROLL_MASK ENCODE_CMD(1, 2, 0, 0)
++#define CYTP_CMD_SET_PALM_GEOMETRY(e) ENCODE_CMD(1, 2, 1, (e))
++#define CYTP_CMD_PALM_GEMMETRY_MASK ENCODE_CMD(1, 2, 1, 0)
++#define CYTP_CMD_SET_PALM_SENSITIVITY(s) ENCODE_CMD(1, 2, 2, (s))
++#define CYTP_CMD_PALM_SENSITIVITY_MASK ENCODE_CMD(1, 2, 2, 0)
++#define CYTP_CMD_SET_MOUSE_SENSITIVITY(s) ENCODE_CMD(1, 3, ((s) >> 2), (s))
++#define CYTP_CMD_MOUSE_SENSITIVITY_MASK ENCODE_CMD(1, 3, 0, 0)
++#define CYTP_CMD_REQUEST_BASELINE_STATUS ENCODE_CMD(2, 0, 0, 1)
++#define CYTP_CMD_REQUEST_RECALIBRATION ENCODE_CMD(2, 0, 0, 3)
++
++#define DECODE_CMD_AA(x) (((x) >> 6) & CMD_BITS_MASK)
++#define DECODE_CMD_BB(x) (((x) >> 4) & CMD_BITS_MASK)
++#define DECODE_CMD_CC(x) (((x) >> 2) & CMD_BITS_MASK)
++#define DECODE_CMD_DD(x) ((x) & CMD_BITS_MASK)
++
++/* Cypress trackpad working mode. */
++#define CYTP_BIT_ABS_PRESSURE (1 << 3)
++#define CYTP_BIT_ABS_NO_PRESSURE (1 << 2)
++#define CYTP_BIT_CYPRESS_REL (1 << 1)
++#define CYTP_BIT_STANDARD_REL (1 << 0)
++#define CYTP_BIT_REL_MASK (CYTP_BIT_CYPRESS_REL | CYTP_BIT_STANDARD_REL)
++#define CYTP_BIT_ABS_MASK (CYTP_BIT_ABS_PRESSURE | CYTP_BIT_ABS_NO_PRESSURE)
++#define CYTP_BIT_ABS_REL_MASK (CYTP_BIT_ABS_MASK | CYTP_BIT_REL_MASK)
++
++#define CYTP_BIT_HIGH_RATE (1 << 4)
++/*
++ * report mode bit is set, firmware working in Remote Mode.
++ * report mode bit is cleared, firmware working in Stream Mode.
++ */
++#define CYTP_BIT_REPORT_MODE (1 << 5)
++
++/* scrolling width values for set HSCROLL and VSCROLL width command. */
++#define SCROLL_WIDTH_NARROW 1
++#define SCROLL_WIDTH_NORMAL 2
++#define SCROLL_WIDTH_WIDE 3
++
++#define PALM_GEOMETRY_ENABLE 1
++#define PALM_GEOMETRY_DISABLE 0
++
++#define TP_METRICS_MASK 0x80
++#define FW_VERSION_MASX 0x7f
++#define FW_VER_HIGH_MASK 0x70
++#define FW_VER_LOW_MASK 0x0f
++
++/* Times to retry a ps2_command and millisecond delay between tries. */
++#define CYTP_PS2_CMD_TRIES 3
++#define CYTP_PS2_CMD_DELAY 500
++
++/* time out for PS/2 command only in milliseconds. */
++#define CYTP_CMD_TIMEOUT 200
++#define CYTP_DATA_TIMEOUT 30
++
++#define CYTP_EXT_CMD 0xe8
++#define CYTP_PS2_RETRY 0xfe
++#define CYTP_PS2_ERROR 0xfc
++
++#define CYTP_RESP_RETRY 0x01
++#define CYTP_RESP_ERROR 0xfe
++
++
++#define CYTP_105001_WIDTH 97 /* Dell XPS 13 */
++#define CYTP_105001_HIGH 59
++#define CYTP_DEFAULT_WIDTH (CYTP_105001_WIDTH)
++#define CYTP_DEFAULT_HIGH (CYTP_105001_HIGH)
++
++#define CYTP_ABS_MAX_X 1600
++#define CYTP_ABS_MAX_Y 900
++#define CYTP_MAX_PRESSURE 255
++#define CYTP_MIN_PRESSURE 0
++
++/* header byte bits of relative package. */
++#define BTN_LEFT_BIT 0x01
++#define BTN_RIGHT_BIT 0x02
++#define BTN_MIDDLE_BIT 0x04
++#define REL_X_SIGN_BIT 0x10
++#define REL_Y_SIGN_BIT 0x20
++
++/* header byte bits of absolute package. */
++#define ABS_VSCROLL_BIT 0x10
++#define ABS_HSCROLL_BIT 0x20
++#define ABS_MULTIFINGER_TAP 0x04
++#define ABS_EDGE_MOTION_MASK 0x80
++
++#define DFLT_RESP_BITS_VALID 0x88 /* SMBus bit should not be set. */
++#define DFLT_RESP_SMBUS_BIT 0x80
++#define DFLT_SMBUS_MODE 0x80
++#define DFLT_PS2_MODE 0x00
++#define DFLT_RESP_BIT_MODE 0x40
++#define DFLT_RESP_REMOTE_MODE 0x40
++#define DFLT_RESP_STREAM_MODE 0x00
++#define DFLT_RESP_BIT_REPORTING 0x20
++#define DFLT_RESP_BIT_SCALING 0x10
++
++#define TP_METRICS_BIT_PALM 0x80
++#define TP_METRICS_BIT_STUBBORN 0x40
++#define TP_METRICS_BIT_2F_JITTER 0x30
++#define TP_METRICS_BIT_1F_JITTER 0x0c
++#define TP_METRICS_BIT_APA 0x02
++#define TP_METRICS_BIT_MTG 0x01
++#define TP_METRICS_BIT_ABS_PKT_FORMAT_SET 0xf0
++#define TP_METRICS_BIT_2F_SPIKE 0x0c
++#define TP_METRICS_BIT_1F_SPIKE 0x03
++
++/* bits of first byte response of E9h-Status Request command. */
++#define RESP_BTN_RIGHT_BIT 0x01
++#define RESP_BTN_MIDDLE_BIT 0x02
++#define RESP_BTN_LEFT_BIT 0x04
++#define RESP_SCALING_BIT 0x10
++#define RESP_ENABLE_BIT 0x20
++#define RESP_REMOTE_BIT 0x40
++#define RESP_SMBUS_BIT 0x80
++
++#define CYTP_MAX_MT_SLOTS 2
++
++struct cytp_contact {
++ int x;
++ int y;
++ int z; /* also named as touch pressure. */
++};
++
++/* The structure of Cypress Trackpad event data. */
++struct cytp_report_data {
++ int contact_cnt;
++ struct cytp_contact contacts[CYTP_MAX_MT_SLOTS];
++ unsigned int left:1;
++ unsigned int right:1;
++ unsigned int middle:1;
++ unsigned int tap:1; /* multi-finger tap detected. */
++};
++
++/* The structure of Cypress Trackpad device private data. */
++struct cytp_data {
++ int fw_version;
++
++ int pkt_size;
++ int mode;
++
++ int tp_min_pressure;
++ int tp_max_pressure;
++ int tp_width; /* X direction physical size in mm. */
++ int tp_high; /* Y direction physical size in mm. */
++ int tp_max_abs_x; /* Max X absolute units that can be reported. */
++ int tp_max_abs_y; /* Max Y absolute units that can be reported. */
++
++ int tp_res_x; /* X resolution in units/mm. */
++ int tp_res_y; /* Y resolution in units/mm. */
++
++ int tp_metrics_supported;
++};
++
++
++#ifdef CONFIG_MOUSE_PS2_CYPRESS
++int cypress_detect(struct psmouse *psmouse, bool set_properties);
++int cypress_init(struct psmouse *psmouse);
++bool cypress_supported(void);
++#else
++inline int cypress_detect(struct psmouse *psmouse, bool set_properties)
++{
++ return -ENOSYS;
++}
++inline int cypress_init(struct psmouse *psmouse)
++{
++ return -ENOSYS;
++}
++inline bool cypress_supported(void)
++{
++ return 0;
++}
++#endif /* CONFIG_MOUSE_PS2_CYPRESS */
++
++#endif /* _CYPRESS_PS2_H */
+--- a/drivers/input/mouse/psmouse-base.c
++++ b/drivers/input/mouse/psmouse-base.c
+@@ -34,6 +34,7 @@
+ #include "touchkit_ps2.h"
+ #include "elantech.h"
+ #include "sentelic.h"
++#include "cypress_ps2.h"
+
+ #define DRIVER_DESC "PS/2 mouse driver"
+
+@@ -663,6 +664,28 @@ static int psmouse_extensions(struct psm
+ }
+
+ /*
++ * Try Cypress Trackpad.
++ * Must try it before Finger Sensing Pad because Finger Sensing Pad probe
++ * upsets some modules of Cypress Trackpads.
++ */
++ if (max_proto > PSMOUSE_IMEX &&
++ cypress_detect(psmouse, set_properties) == 0) {
++ if (cypress_supported()) {
++ if (cypress_init(psmouse) == 0)
++ return PSMOUSE_CYPRESS;
++
++ /*
++ * Finger Sensing Pad probe upsets some modules of
++ * Cypress Trackpad, must avoid Finger Sensing Pad
++ * probe if Cypress Trackpad device detected.
++ */
++ return PSMOUSE_PS2;
++ }
++
++ max_proto = PSMOUSE_IMEX;
++ }
++
++/*
+ * Try ALPS TouchPad
+ */
+ if (max_proto > PSMOUSE_IMEX) {
+@@ -789,6 +812,15 @@ static const struct psmouse_protocol psm
+ .alias = "thinkps",
+ .detect = thinking_detect,
+ },
++#ifdef CONFIG_MOUSE_PS2_CYPRESS
++ {
++ .type = PSMOUSE_CYPRESS,
++ .name = "CyPS/2",
++ .alias = "cypress",
++ .detect = cypress_detect,
++ .init = cypress_init,
++ },
++#endif
+ {
+ .type = PSMOUSE_GENPS,
+ .name = "GenPS/2",
+--- a/drivers/input/mouse/psmouse.h
++++ b/drivers/input/mouse/psmouse.h
+@@ -94,6 +94,7 @@ enum psmouse_type {
+ PSMOUSE_HGPK,
+ PSMOUSE_ELANTECH,
+ PSMOUSE_FSP,
++ PSMOUSE_CYPRESS,
+ PSMOUSE_AUTO /* This one should always be last */
+ };
+
Added: dists/sid/linux/debian/patches/features/all/input-mt/Input-cypress_ps2-fix-trackpadi-found-in-Dell-XPS12.patch
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ dists/sid/linux/debian/patches/features/all/input-mt/Input-cypress_ps2-fix-trackpadi-found-in-Dell-XPS12.patch Wed Mar 27 14:12:25 2013 (r19952)
@@ -0,0 +1,69 @@
+From: Kamal Mostafa <kamal at canonical.com>
+Date: Thu, 21 Feb 2013 11:55:05 -0800
+Subject: Input: cypress_ps2 - fix trackpadi found in Dell XPS12
+
+commit 81bb5d31fbf3893a8e041c649dea704dd11d5272 upstream.
+
+Avoid firmware glitch in Cypress PS/2 Trackpad firmware version 11
+(as observed in Dell XPS12) which prevents driver from recognizing
+the trackpad.
+
+BugLink: http://launchpad.net/bugs/1103594
+
+Signed-off-by: Kamal Mostafa <kamal at canonical.com>
+Cc: Dudley Du <dudl at cypress.com>
+Signed-off-by: Dmitry Torokhov <dmitry.torokhov at gmail.com>
+---
+ drivers/input/mouse/cypress_ps2.c | 19 +++++++++++++------
+ 1 file changed, 13 insertions(+), 6 deletions(-)
+
+diff --git a/drivers/input/mouse/cypress_ps2.c b/drivers/input/mouse/cypress_ps2.c
+index 1673dc6..f51765f 100644
+--- a/drivers/input/mouse/cypress_ps2.c
++++ b/drivers/input/mouse/cypress_ps2.c
+@@ -236,6 +236,13 @@ static int cypress_read_fw_version(struct psmouse *psmouse)
+ cytp->fw_version = param[2] & FW_VERSION_MASX;
+ cytp->tp_metrics_supported = (param[2] & TP_METRICS_MASK) ? 1 : 0;
+
++ /*
++ * Trackpad fw_version 11 (in Dell XPS12) yields a bogus response to
++ * CYTP_CMD_READ_TP_METRICS so do not try to use it. LP: #1103594.
++ */
++ if (cytp->fw_version >= 11)
++ cytp->tp_metrics_supported = 0;
++
+ psmouse_dbg(psmouse, "cytp->fw_version = %d\n", cytp->fw_version);
+ psmouse_dbg(psmouse, "cytp->tp_metrics_supported = %d\n",
+ cytp->tp_metrics_supported);
+@@ -258,6 +265,9 @@ static int cypress_read_tp_metrics(struct psmouse *psmouse)
+ cytp->tp_res_x = cytp->tp_max_abs_x / cytp->tp_width;
+ cytp->tp_res_y = cytp->tp_max_abs_y / cytp->tp_high;
+
++ if (!cytp->tp_metrics_supported)
++ return 0;
++
+ memset(param, 0, sizeof(param));
+ if (cypress_send_ext_cmd(psmouse, CYTP_CMD_READ_TP_METRICS, param) == 0) {
+ /* Update trackpad parameters. */
+@@ -315,18 +325,15 @@ static int cypress_read_tp_metrics(struct psmouse *psmouse)
+
+ static int cypress_query_hardware(struct psmouse *psmouse)
+ {
+- struct cytp_data *cytp = psmouse->private;
+ int ret;
+
+ ret = cypress_read_fw_version(psmouse);
+ if (ret)
+ return ret;
+
+- if (cytp->tp_metrics_supported) {
+- ret = cypress_read_tp_metrics(psmouse);
+- if (ret)
+- return ret;
+- }
++ ret = cypress_read_tp_metrics(psmouse);
++ if (ret)
++ return ret;
+
+ return 0;
+ }
Modified: dists/sid/linux/debian/patches/series
==============================================================================
--- dists/sid/linux/debian/patches/series Wed Mar 27 03:51:48 2013 (r19951)
+++ dists/sid/linux/debian/patches/series Wed Mar 27 14:12:25 2013 (r19952)
@@ -639,3 +639,10 @@
bugfix/x86/KVM-x86-fix-for-buffer-overflow-in-handling-of-MSR_K.patch
bugfix/x86/KVM-x86-Convert-MSR_KVM_SYSTEM_TIME-to-use-gfn_to_hv.patch
bugfix/all/KVM-Fix-bounds-checking-in-ioapic-indirect-register-.patch
+
+# Input multitouch extensions from 3.7
+features/all/input-mt/Input-MT-Add-flags-to-input_mt_init_slots.patch
+features/all/input-mt/Input-MT-Handle-frame-synchronization-in-core.patch
+features/all/input-mt/Input-MT-Add-in-kernel-tracking.patch
+features/all/input-mt/Input-add-support-for-Cypress-PS-2-Trackpads.patch
+features/all/input-mt/Input-cypress_ps2-fix-trackpadi-found-in-Dell-XPS12.patch
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