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Date: Mon, 19 Nov 2012 15:30:37 -0800
From: Kamal Mostafa <kamal@...onical.com>
To: linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
Dmitry Torokhov <dmitry.torokhov@...il.com>,
Henrik Rydberg <rydberg@...omail.se>
Cc: David Solda <dso@...ress.com>, Troy Abercrombia <ta@...ress.com>,
Cypress Semiconductor Corporation <customercare@...ress.com>,
Kamal Mostafa <kamal@...onical.com>,
Kyle Fazzari <git@...tus.e4ward.com>,
Mario Limonciello <mario_limonciello@...l.com>,
Tim Gardner <tim.gardner@...onical.com>,
Herton Krzesinski <herton.krzesinski@...onical.com>
Subject: [PATCH 2/2] input: Cypress PS/2 Trackpad link into psmouse-base
From: Cypress Semiconductor Corporation <customercare@...ress.com>
Original code contributed by Cypress Semiconductor Corporation,
modified by Kamal Mostafa.
BugLink: http://launchpad.net/bugs/978807
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
Signed-off-by: Mario Limonciello <mario_limonciello@...l.com>
Signed-off-by: Tim Gardner <tim.gardner@...onical.com>
---
drivers/input/mouse/Kconfig | 10 +++++++++
drivers/input/mouse/Makefile | 1 +
drivers/input/mouse/psmouse-base.c | 40 ++++++++++++++++++++++++++++++++++++
drivers/input/mouse/psmouse.h | 2 ++
4 files changed, 53 insertions(+)
diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig
index cd6268c..88954dd 100644
--- 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
diff --git a/drivers/input/mouse/Makefile b/drivers/input/mouse/Makefile
index 46ba755..323e352 100644
--- a/drivers/input/mouse/Makefile
+++ b/drivers/input/mouse/Makefile
@@ -32,3 +32,4 @@ psmouse-$(CONFIG_MOUSE_PS2_LIFEBOOK) += lifebook.o
psmouse-$(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
diff --git a/drivers/input/mouse/psmouse-base.c b/drivers/input/mouse/psmouse-base.c
index 22fe254..32c06e7 100644
--- a/drivers/input/mouse/psmouse-base.c
+++ b/drivers/input/mouse/psmouse-base.c
@@ -23,6 +23,7 @@
#include <linux/init.h>
#include <linux/libps2.h>
#include <linux/mutex.h>
+#include <linux/sched.h>
#include "psmouse.h"
#include "synaptics.h"
@@ -34,6 +35,7 @@
#include "touchkit_ps2.h"
#include "elantech.h"
#include "sentelic.h"
+#include "cypress_ps2.h"
#define DRIVER_DESC "PS/2 mouse driver"
@@ -321,6 +323,13 @@ static irqreturn_t psmouse_interrupt(struct serio *serio,
if (psmouse->state <= PSMOUSE_RESYNCING)
goto out;
+ /* For Cypress Trackpad to read some special data more than 6 bytes. */
+ if (psmouse->state == PSMOUSE_CMD_CYTP) {
+ psmouse->packet[psmouse->pktcnt++] = data;
+ wake_up(&psmouse->ps2dev.wait);
+ goto out;
+ }
+
if (psmouse->state == PSMOUSE_ACTIVATED &&
psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) {
psmouse_info(psmouse, "%s at %s lost synchronization, throwing %d bytes away.\n",
@@ -759,6 +768,28 @@ static int psmouse_extensions(struct psmouse *psmouse,
}
/*
+ * 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) {
@@ -896,6 +927,15 @@ static const struct psmouse_protocol psmouse_protocols[] = {
.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",
diff --git a/drivers/input/mouse/psmouse.h b/drivers/input/mouse/psmouse.h
index fe1df23..054893f 100644
--- a/drivers/input/mouse/psmouse.h
+++ b/drivers/input/mouse/psmouse.h
@@ -26,6 +26,7 @@ enum psmouse_state {
PSMOUSE_INITIALIZING,
PSMOUSE_RESYNCING,
PSMOUSE_CMD_MODE,
+ PSMOUSE_CMD_CYTP, /* Cypress Trackpad detecting and initializing state. */
PSMOUSE_ACTIVATED,
};
@@ -95,6 +96,7 @@ enum psmouse_type {
PSMOUSE_ELANTECH,
PSMOUSE_FSP,
PSMOUSE_SYNAPTICS_RELATIVE,
+ PSMOUSE_CYPRESS,
PSMOUSE_AUTO /* This one should always be last */
};
--
1.7.10.4
--
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