Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1e0c5b1275a0e59747349745da8778523a9dcd18
Commit: 1e0c5b1275a0e59747349745da8778523a9dcd18
Parent: c0338c15973c1b6de2b42808a071bf3af948d595
Author: Dmitry Torokhov <[EMAIL PROTECTED]>
AuthorDate: Mon May 14 23:51:54 2007 -0400
Committer: Dmitry Torokhov <[EMAIL PROTECTED]>
CommitDate: Tue May 22 23:23:35 2007 -0400
Input: ALPS - force stream mode
ALPS appears to need SETSTREAM command after reset, otherwise it
does not produce any data. Now that we do not request stream mode
by default individual drivers need to take care of it.
[Jason Riedy <[EMAIL PROTECTED]> - fix oops]
Signed-off-by: Dmitry Torokhov <[EMAIL PROTECTED]>
---
drivers/input/mouse/alps.c | 58 +++++++++++++++++++++++--------------------
1 files changed, 31 insertions(+), 27 deletions(-)
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index cf3e466..2c5f11a 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -251,11 +251,15 @@ static const struct alps_model_info
*alps_get_model(struct psmouse *psmouse, int
dbg("E7 report: %2.2x %2.2x %2.2x", param[0], param[1], param[2]);
- for (i = 0; i < ARRAY_SIZE(rates) && param[2] != rates[i]; i++);
- *version = (param[0] << 8) | (param[1] << 4) | i;
+ if (version) {
+ for (i = 0; i < ARRAY_SIZE(rates) && param[2] != rates[i]; i++)
+ /* empty */;
+ *version = (param[0] << 8) | (param[1] << 4) | i;
+ }
for (i = 0; i < ARRAY_SIZE(alps_model_data); i++)
- if (!memcmp(param, alps_model_data[i].signature,
sizeof(alps_model_data[i].signature)))
+ if (!memcmp(param, alps_model_data[i].signature,
+ sizeof(alps_model_data[i].signature)))
return alps_model_data + i;
return NULL;
@@ -380,32 +384,46 @@ static int alps_poll(struct psmouse *psmouse)
return 0;
}
-static int alps_reconnect(struct psmouse *psmouse)
+static int alps_hw_init(struct psmouse *psmouse, int *version)
{
struct alps_data *priv = psmouse->private;
- int version;
-
- psmouse_reset(psmouse);
- if (!(priv->i = alps_get_model(psmouse, &version)))
+ priv->i = alps_get_model(psmouse, version);
+ if (!priv->i)
return -1;
if ((priv->i->flags & ALPS_PASS) && alps_passthrough_mode(psmouse, 1))
return -1;
if (alps_tap_mode(psmouse, 1)) {
- printk(KERN_WARNING "alps.c: Failed to reenable hardware
tapping\n");
+ printk(KERN_WARNING "alps.c: Failed to enable hardware
tapping\n");
return -1;
}
if (alps_absolute_mode(psmouse)) {
- printk(KERN_ERR "alps.c: Failed to reenable absolute mode\n");
+ printk(KERN_ERR "alps.c: Failed to enable absolute mode\n");
return -1;
}
if ((priv->i->flags & ALPS_PASS) && alps_passthrough_mode(psmouse, 0))
return -1;
+ /* ALPS needs stream mode, otherwise it won't report any data */
+ if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) {
+ printk(KERN_ERR "alps.c: Failed to enable stream mode\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int alps_reconnect(struct psmouse *psmouse)
+{
+ psmouse_reset(psmouse);
+
+ if (alps_hw_init(psmouse, NULL))
+ return -1;
+
return 0;
}
@@ -430,23 +448,9 @@ int alps_init(struct psmouse *psmouse)
goto init_fail;
priv->dev2 = dev2;
+ psmouse->private = priv;
- priv->i = alps_get_model(psmouse, &version);
- if (!priv->i)
- goto init_fail;
-
- if ((priv->i->flags & ALPS_PASS) && alps_passthrough_mode(psmouse, 1))
- goto init_fail;
-
- if (alps_tap_mode(psmouse, 1))
- printk(KERN_WARNING "alps.c: Failed to enable hardware
tapping\n");
-
- if (alps_absolute_mode(psmouse)) {
- printk(KERN_ERR "alps.c: Failed to enable absolute mode\n");
- goto init_fail;
- }
-
- if ((priv->i->flags & ALPS_PASS) && alps_passthrough_mode(psmouse, 0))
+ if (alps_hw_init(psmouse, &version))
goto init_fail;
dev1->evbit[LONG(EV_KEY)] |= BIT(EV_KEY);
@@ -493,13 +497,13 @@ int alps_init(struct psmouse *psmouse)
/* We are having trouble resyncing ALPS touchpads so disable it for now
*/
psmouse->resync_time = 0;
- psmouse->private = priv;
return 0;
init_fail:
psmouse_reset(psmouse);
input_free_device(dev2);
kfree(priv);
+ psmouse->private = NULL;
return -1;
}
-
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