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Subject[PATCH 9/44] Support for scroll wheel on Office keyboards
Date
From
You can pull this changeset from:
bk://kernel.bkbits.net/vojtech/input

===================================================================
ChangeSet@1.1474.188.9, 2004-01-26 13:56:47+01:00, vojtech@suse.cz
input: Add support for scroll wheel on MS Office and similar keyboards.


atkbd.c | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------
1 files changed, 58 insertions(+), 7 deletions(-)
===================================================================
diff -Nru a/drivers/input/keyboard/atkbd.c b/drivers/input/keyboard/atkbd.c
--- a/drivers/input/keyboard/atkbd.c Tue Mar 16 13:19:47 2004
+++ b/drivers/input/keyboard/atkbd.c Tue Mar 16 13:19:47 2004
@@ -33,18 +33,18 @@
MODULE_PARM(atkbd_set, "1i");
MODULE_PARM(atkbd_reset, "1i");
MODULE_PARM(atkbd_softrepeat, "1i");
+MODULE_PARM(atkbd_scroll, "1i");
MODULE_LICENSE("GPL");

static int atkbd_set = 2;
module_param_named(set, atkbd_set, int, 0);
MODULE_PARM_DESC(set, "Select keyboard code set (2 = default, 3, 4)");
+
#if defined(__i386__) || defined(__x86_64__) || defined(__hppa__)
static int atkbd_reset;
#else
static int atkbd_reset = 1;
#endif
-static int atkbd_softrepeat;
-
module_param_named(reset, atkbd_reset, bool, 0);
MODULE_PARM_DESC(reset, "Reset keyboard during initialization");

@@ -52,6 +52,10 @@
module_param_named(softrepeat, atkbd_softrepeat, bool, 0);
MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat");

+static int atkbd_scroll;
+module_parm_named(scroll, atkbd_scroll, bool, 0);
+MODULE_PARM_DESC_(scroll, "Enable scroll-wheel on office keyboards");
+
/*
* Scancode to keycode tables. These are just the default setting, and
* are loadable via an userland utility.
@@ -127,11 +131,11 @@
#define ATKBD_CMD_EX_SETLEDS 0x20eb
#define ATKBD_CMD_OK_GETID 0x02e8

+
#define ATKBD_RET_ACK 0xfa
#define ATKBD_RET_NAK 0xfe
#define ATKBD_RET_BAT 0xaa
#define ATKBD_RET_EMUL0 0xe0
-#define ATKBD_RET_EMULX 0x80
#define ATKBD_RET_EMUL1 0xe1
#define ATKBD_RET_RELEASE 0xf0
#define ATKBD_RET_HANGUEL 0xf1
@@ -141,6 +145,22 @@
#define ATKBD_KEY_UNKNOWN 0
#define ATKBD_KEY_NULL 255

+#define ATKBD_SCR_1 254
+#define ATKBD_SCR_2 253
+#define ATKBD_SCR_4 252
+#define ATKBD_SCR_8 251
+#define ATKBD_SCR_CLICK 250
+
+#define ATKBD_SPECIAL 250
+
+static unsigned char atkbd_scroll_keys[5][2] = {
+ { ATKBD_SCR_1, 0x45 },
+ { ATKBD_SCR_2, 0x29 },
+ { ATKBD_SCR_4, 0x36 },
+ { ATKBD_SCR_8, 0x27 },
+ { ATKBD_SCR_CLICK, 0x60 },
+};
+
/*
* The atkbd control structure
*/
@@ -189,6 +209,7 @@
{
struct atkbd *atkbd = serio->private;
unsigned int code = data;
+ int scroll = 0, click = -1;
int value;

#ifdef ATKBD_DEBUG
@@ -284,6 +305,21 @@
else
printk(KERN_WARNING "atkbd.c: Use 'setkeycodes %s%02x <keycode>' to make it known.\n", code & 0x80 ? "e0" : "", code & 0x7f);
break;
+ case ATKBD_SCR_1:
+ scroll = 1 - atkbd->release * 2;
+ break;
+ case ATKBD_SCR_2:
+ scroll = 2 - atkbd->release * 4;
+ break;
+ case ATKBD_SCR_4:
+ scroll = 4 - atkbd->release * 8;
+ break;
+ case ATKBD_SCR_8:
+ scroll = 8 - atkbd->release * 16;
+ break;
+ case ATKBD_SCR_CLICK:
+ click = !atkbd->release;
+ break;
default:
value = atkbd->release ? 0 :
(1 + (!atkbd_softrepeat && test_bit(atkbd->keycode[code], atkbd->dev.key)));
@@ -305,6 +341,13 @@
atkbd_report_key(&atkbd->dev, regs, atkbd->keycode[code], value);
}

+ if (scroll || click != -1) {
+ input_regs(&atkbd->dev, regs);
+ input_report_key(&atkbd->dev, BTN_MIDDLE, click);
+ input_report_rel(&atkbd->dev, REL_WHEEL, scroll);
+ input_sync(&atkbd->dev);
+ }
+
atkbd->release = 0;
out:
return IRQ_HANDLED;
@@ -705,15 +748,23 @@

sprintf(atkbd->phys, "%s/input0", serio->phys);

+ if (atkbd_scroll) {
+ for (i = 0; i < 5; i++)
+ atkbd_set2_keycode[atkbd_scroll_keys[i][1]] = atkbd_scroll_keys[i][0];
+ atkbd->dev.evbit[0] |= BIT(EV_REL);
+ atkbd->dev.relbit[0] = BIT(REL_WHEEL);
+ set_bit(BTN_MIDDLE, atkbd->dev.keybit);
+ }
+
if (atkbd->translated) {
for (i = 0; i < 128; i++) {
atkbd->keycode[i] = atkbd_set2_keycode[atkbd_unxlate_table[i]];
atkbd->keycode[i | 0x80] = atkbd_set2_keycode[atkbd_unxlate_table[i] | 0x80];
}
- } else if (atkbd->set == 2) {
- memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
- } else {
+ } else if (atkbd->set == 3) {
memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
+ } else {
+ memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
}

atkbd->dev.name = atkbd->name;
@@ -724,7 +775,7 @@
atkbd->dev.id.version = atkbd->id;

for (i = 0; i < 512; i++)
- if (atkbd->keycode[i] && atkbd->keycode[i] < 255)
+ if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL)
set_bit(atkbd->keycode[i], atkbd->dev.keybit);

input_register_device(&atkbd->dev);
-
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