linux-kernel - Re: Input+S3: extra keycodes forgotten after suspend

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Date:	Fri, 23 May 2008 00:44:30 -0400
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Bruno Pr??mont <bonbons@...ux-vserver.org>
Cc:	Linux Input <linux-input@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"R. J. Wysocki" <Rafal.Wysocki@....edu.pl>
Subject: Re: Input+S3: extra keycodes forgotten after suspend

On Wed, May 21, 2008 at 04:38:08PM -0400, Dmitry Torokhov wrote:
> 
> Ah, ok, great.. I think we simply need to move dritek out of the place
> where you put it in so it does not interfere with our efforts to
> resume keyboard and mouse ;) I will see what I can do there..
> 

So what about the patch below? Does it work for you?

Thanks!

-- 
Dmitry

From: Bruno Prémont <bonbons@...ux-vserver.org>

Input: i8042 - make sure Dritek quirk is invoked at resume

Also do not fail i8042 entire initialization if enabling dritek extension
fails.

Signed-off-by: Dmitry Torokhov <dtor@...l.ru>
---
 drivers/input/serio/i8042.c |   33 +++++++++++++++++++++++++--------
 1 file changed, 25 insertions(+), 8 deletions(-)

Index: work/drivers/input/serio/i8042.c
===================================================================
--- work.orig/drivers/input/serio/i8042.c
+++ work/drivers/input/serio/i8042.c
@@ -885,6 +885,20 @@ static long i8042_panic_blink(long count
 
 #undef DELAY
 
+#ifdef CONFIG_X86
+static void i8042_dritek_enable(void)
+{
+	char param = 0x90;
+	int error;
+
+	error = i8042_command(&param, 0x1059);
+	if (error)
+		printk(KERN_WARNING
+			"Failed to enable DRITEK extension: %d\n",
+			error);
+}
+#endif
+
 #ifdef CONFIG_PM
 /*
  * Here we try to restore the original BIOS settings. We only want to
@@ -942,6 +956,12 @@ static int i8042_resume(struct platform_
 		return -EIO;
 	}
 
+
+#ifdef CONFIG_X86
+	if (i8042_dritek)
+		i8042_dritek_enable();
+#endif
+
 	if (i8042_mux_present) {
 		if (i8042_set_mux_mode(1, NULL) || i8042_enable_mux_ports())
 			printk(KERN_WARNING
@@ -1160,6 +1180,11 @@ static int __devinit i8042_probe(struct 
 	if (error)
 		return error;
 
+#ifdef CONFIG_X86
+	if (i8042_dritek)
+		i8042_dritek_enable();
+#endif
+
 	if (!i8042_noaux) {
 		error = i8042_setup_aux();
 		if (error && error != -ENODEV && error != -EBUSY)
@@ -1171,14 +1196,6 @@ static int __devinit i8042_probe(struct 
 		if (error)
 			goto out_fail;
 	}
-#ifdef CONFIG_X86
-	if (i8042_dritek) {
-		char param = 0x90;
-		error = i8042_command(&param, 0x1059);
-		if (error)
-			goto out_fail;
-	}
-#endif
 /*
  * Ok, everything is ready, let's register all serio ports
  *
--
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