[PATCH] ALPS: Add support for 4 directions button on Acer Aspire5720
From: Maxim Levitsky
Date: Tue Nov 10 2009 - 05:04:01 EST
>From 4aefbe6c09df53881c4738c1a524be595a388e28 Mon Sep 17 00:00:00 2001
From: Maxim Levitsky <maximlevitsky@xxxxxxxxx>
Date: Tue, 10 Nov 2009 11:57:56 +0200
Subject: [PATCH] ALPS: Add support for 4 directions button on Acer Aspire 5720
Implemented using DMI due to uncertainty about systems that have
only the middle button
Signed-off-by: Maxim Levitsky <maximlevitsky@xxxxxxxxx>
---
drivers/input/mouse/alps.c | 81 +++++++++++++++++++++++++++++++++++--------
drivers/input/mouse/alps.h | 2 +-
2 files changed, 67 insertions(+), 16 deletions(-)
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index f361106..06a5709 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -17,6 +17,7 @@
#include <linux/input.h>
#include <linux/serio.h>
#include <linux/libps2.h>
+#include <linux/dmi.h>
#include "psmouse.h"
#include "alps.h"
@@ -28,13 +29,17 @@
#define dbg(format, arg...) do {} while (0)
#endif
-#define ALPS_DUALPOINT 0x01
-#define ALPS_WHEEL 0x02
-#define ALPS_FW_BK_1 0x04
-#define ALPS_4BTN 0x08
-#define ALPS_OLDPROTO 0x10
-#define ALPS_PASS 0x20
-#define ALPS_FW_BK_2 0x40
+
+#define ALPS_OLDPROTO 0x01 /* old style input */
+#define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */
+#define ALPS_PASS 0x04 /* select which device to address each time */
+
+
+#define ALPS_WHEEL 0x08 /* hardware wheel present */
+#define ALPS_FW_BK_1 0x10 /* front & back buttons present */
+#define ALPS_FW_BK_2 0x20 /* front & back buttons present */
+#define ALPS_EXTRA 0x40 /* 4 direction button present */
+
static const struct alps_model_info alps_model_data[] = {
{ { 0x32, 0x02, 0x14 }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Toshiba Salellite Pro M10 */
@@ -147,7 +152,13 @@ static void alps_process_packet(struct psmouse *psmouse)
input_report_key(dev, BTN_LEFT, left);
input_report_key(dev, BTN_RIGHT, right);
- input_report_key(dev, BTN_MIDDLE, middle);
+
+
+ /* middle button serves as left scroll button */
+ if ((priv->i->flags & ALPS_EXTRA))
+ input_report_key(dev, BTN_2, middle);
+ else
+ input_report_key(dev, BTN_MIDDLE, middle);
/* Convert hardware tap to a reasonable Z value */
if (ges && !fin) z = 40;
@@ -181,10 +192,13 @@ static void alps_process_packet(struct psmouse *psmouse)
input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
if (priv->i->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
- input_report_key(dev, BTN_FORWARD, forward);
- input_report_key(dev, BTN_BACK, back);
+ input_report_key(dev, BTN_0, forward);
+ input_report_key(dev, BTN_1, back);
}
+ if (priv->i->flags & ALPS_EXTRA)
+ input_report_key(dev, BTN_3, packet[0] & 0x20);
+
input_sync(dev);
}
@@ -216,9 +230,10 @@ static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
return PSMOUSE_GOOD_DATA;
}
-static const struct alps_model_info *alps_get_model(struct psmouse *psmouse, int *version)
+static struct alps_model_info *alps_get_model(struct psmouse *psmouse, int *version)
{
struct ps2dev *ps2dev = &psmouse->ps2dev;
+ struct alps_model_info *model_info;
static const unsigned char rates[] = { 0, 10, 20, 40, 60, 80, 100, 200 };
unsigned char param[4];
int i;
@@ -268,9 +283,16 @@ static const struct alps_model_info *alps_get_model(struct psmouse *psmouse, int
for (i = 0; i < ARRAY_SIZE(alps_model_data); i++)
if (!memcmp(param, alps_model_data[i].signature,
- sizeof(alps_model_data[i].signature)))
- return alps_model_data + i;
+ sizeof(alps_model_data[i].signature))) {
+
+ model_info = kmalloc(sizeof(struct alps_model_info),
+ GFP_KERNEL);
+ memcpy(model_info, alps_model_data + i,
+ sizeof(struct alps_model_info));
+
+ return model_info;
+ }
return NULL;
}
@@ -393,6 +415,25 @@ static int alps_poll(struct psmouse *psmouse)
return 0;
}
+static int alps_dmi_flags;
+static int alps_acer_5720_flags(const struct dmi_system_id *d)
+{
+ alps_dmi_flags = ALPS_EXTRA | ALPS_FW_BK_1;
+ return 0;
+}
+
+static struct dmi_system_id alps_dmi_table[] = {
+ {
+ .callback = alps_acer_5720_flags,
+ .ident = "Acer Aspire 5720",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5720"),
+ },
+ },
+ {}
+};
+
static int alps_hw_init(struct psmouse *psmouse, int *version)
{
struct alps_data *priv = psmouse->private;
@@ -401,6 +442,10 @@ static int alps_hw_init(struct psmouse *psmouse, int *version)
if (!priv->i)
return -1;
+ dmi_check_system(alps_dmi_table);
+ if (alps_dmi_flags)
+ priv->i->flags = alps_dmi_flags;
+
if ((priv->i->flags & ALPS_PASS) &&
alps_passthrough_mode(psmouse, true)) {
return -1;
@@ -446,6 +491,7 @@ static void alps_disconnect(struct psmouse *psmouse)
psmouse_reset(psmouse);
input_unregister_device(priv->dev2);
+ kfree(priv->i);
kfree(priv);
}
@@ -483,8 +529,13 @@ int alps_init(struct psmouse *psmouse)
}
if (priv->i->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
- dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD);
- dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK);
+ dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0);
+ dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1);
+ }
+
+ if (priv->i->flags & ALPS_EXTRA) {
+ dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2);
+ dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3);
}
snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys);
diff --git a/drivers/input/mouse/alps.h b/drivers/input/mouse/alps.h
index bc87936..92505d5 100644
--- a/drivers/input/mouse/alps.h
+++ b/drivers/input/mouse/alps.h
@@ -21,7 +21,7 @@ struct alps_model_info {
struct alps_data {
struct input_dev *dev2; /* Relative device */
char phys[32]; /* Phys */
- const struct alps_model_info *i;/* Info */
+ struct alps_model_info *i; /* Info */
int prev_fin; /* Finger bit from previous packet */
};
--
1.6.3.3
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