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Making The Keyboard Funky #1

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Making The Keyboard Funky #1

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d8ea3f2
Started debugging kernel
yungFundamental Aug 17, 2025
e898f94
Shifted all letter keys right
yungFundamental Aug 17, 2025
6e2bb05
Merge branch 'master' of github.com:yungFundamental/linux into task/f…
yungFundamental Aug 20, 2025
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28 changes: 26 additions & 2 deletions drivers/input/keyboard/atkbd.c
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Original file line number Diff line number Diff line change
Expand Up @@ -74,6 +74,7 @@ MODULE_PARM_DESC(terminal, "Enable break codes on an IBM Terminal keyboard conne
*/

#define ATKBD_KEYMAP_SIZE 512
#define WRAP_INC(val, min, max) ((((val+1) - min ) % (max - min + 1)) + min)

static const unsigned short atkbd_set2_keycode[ATKBD_KEYMAP_SIZE] = {

Expand Down Expand Up @@ -505,6 +506,7 @@ static void atkbd_receive_byte(struct ps2dev *ps2dev, u8 data)
return;

keycode = atkbd->keycode[code];
dev_dbg(&serio->dev, "Parsed byte %04X to keycode %04X.\n", code, keycode);

if (!(atkbd->release && test_bit(code, atkbd->force_release_mask)))
if (keycode != ATKBD_KEY_NULL)
Expand Down Expand Up @@ -1117,6 +1119,28 @@ static int atkbd_get_keymap_from_fwnode(struct atkbd *atkbd)
return 0;
}


/*
* shift_right_if_alpha_key() returns the next key on the keyboard to the right if the key given was a letter.
* If the key wasn't a letter, the same key will be returned.
*/

static unsigned short shift_right_if_alpha_key(unsigned short keycode)
{
int i;
unsigned short row_ranges[][2] = {
{16, 25},
{30, 38},
{44, 50}
};
for (i=0; i < sizeof(row_ranges) / sizeof(row_ranges[0]); i++)
{
if (keycode >= row_ranges[i][0] && keycode <= row_ranges[i][1])
return WRAP_INC(keycode, row_ranges[i][0], row_ranges[i][1]);
}
return keycode;
}

/*
* atkbd_set_keycode_table() initializes keyboard's keycode table
* according to the selected scancode set
Expand All @@ -1136,8 +1160,8 @@ static void atkbd_set_keycode_table(struct atkbd *atkbd)
} else if (atkbd->translated) {
for (i = 0; i < 128; i++) {
scancode = atkbd_unxlate_table[i];
atkbd->keycode[i] = atkbd_set2_keycode[scancode];
atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80];
atkbd->keycode[i] = shift_right_if_alpha_key(atkbd_set2_keycode[scancode]);
atkbd->keycode[i | 0x80] = shift_right_if_alpha_key(atkbd_set2_keycode[scancode | 0x80]);
if (atkbd->scroll)
for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
if ((scancode | 0x80) == atkbd_scroll_keys[j].set2)
Expand Down