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SubjectRe: Dell Latitude C600 suspend problem
On Sun, Oct 07, 2001 at 05:09:57PM +0100, Tim Stadelmann wrote:

> I've written a little patch (not included yet) that makes
> pckbd_pm_resume behave well in connection with the current incarnation
> of the power management code. Suspend and resume work again without
> problems.
>
> Unfortunatly, now the actual tweeks done by the callback seem to
> slightly confuse my keyboard driver...? Will look into that soon.

Oh well... Can't reproduce the problem any more. I probably
accidentially hit a couple of keys while reaching for the power
button.

In any case, here's the patch:

--- linux/include/asm/keyboard.h.bak Sun Oct 7 16:38:23 2001
+++ linux/include/asm/keyboard.h Sun Oct 7 16:37:45 2001
@@ -16,6 +16,7 @@
#include <linux/kernel.h>
#include <linux/ioport.h>
#include <linux/kd.h>
+#include <linux/pm.h>
#include <asm/io.h>

#define KEYBOARD_IRQ 1
@@ -28,7 +29,7 @@
extern char pckbd_unexpected_up(unsigned char keycode);
extern void pckbd_leds(unsigned char leds);
extern void pckbd_init_hw(void);
-extern void pckbd_pm_resume(void);
+extern int pckbd_pm_resume(struct pm_dev *, pm_request_t, void *);
extern unsigned char pckbd_sysrq_xlate[128];

#define kbd_setkeycode pckbd_setkeycode
--- linux/drivers/char/pc_keyb.c.bak Sun Oct 7 17:18:45 2001
+++ linux/drivers/char/pc_keyb.c Sun Oct 7 16:37:07 2001
@@ -397,29 +397,32 @@
return 0200;
}

-void pckbd_pm_resume(void)
+int pckbd_pm_resume(struct pm_dev *dev, pm_request_t rqst, void *data)
{
#if defined CONFIG_PSMOUSE
unsigned long flags;

- if (queue) { /* Aux port detected */
- if (aux_count == 0) { /* Mouse not in use */
- spin_lock_irqsave(&kbd_controller_lock, flags);
- /*
- * Dell Lat. C600 A06 enables mouse after resume.
- * When user touches the pad, it posts IRQ 12
- * (which we do not process), thus holding keyboard.
- */
- kbd_write_command(KBD_CCMD_MOUSE_DISABLE);
- /* kbd_write_cmd(AUX_INTS_OFF); */ /* Config & lock */
- kb_wait();
- kbd_write_command(KBD_CCMD_WRITE_MODE);
- kb_wait();
- kbd_write_output(AUX_INTS_OFF);
- spin_unlock_irqrestore(&kbd_controller_lock, flags);
- }
+ if (rqst == PM_RESUME) {
+ if (queue) { /* Aux port detected */
+ if (aux_count == 0) { /* Mouse not in use */
+ spin_lock_irqsave(&kbd_controller_lock, flags);
+ /*
+ * Dell Lat. C600 A06 enables mouse after resume.
+ * When user touches the pad, it posts IRQ 12
+ * (which we do not process), thus holding keyboard.
+ */
+ kbd_write_command(KBD_CCMD_MOUSE_DISABLE);
+ /* kbd_write_cmd(AUX_INTS_OFF); */ /* Config & lock */
+ kb_wait();
+ kbd_write_command(KBD_CCMD_WRITE_MODE);
+ kb_wait();
+ kbd_write_output(AUX_INTS_OFF);
+ spin_unlock_irqrestore(&kbd_controller_lock, flags);
+ }
+ }
}
-#endif
+#endif
+ return 0;
}


Greetings,
Tim


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