Input: keyboard - simplify emulate_raw() implementation (896cdc7b) · Commits · e / devices / android_kernel_oneplus_sm8150

drivers/char/keyboard.c

+34 −17

Original line number	Diff line number	Diff line
		@@ -1025,7 +1025,7 @@ static const unsigned short x86_keycodes[256] =
		48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
		64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
		80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92,
		284,285,309,298,312, 91,327,328,329,331,333,335,336,337,338,339,
		284,285,309, 0,312, 91,327,328,329,331,333,335,336,337,338,339,
		367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349,
		360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355,
		103,104,105,275,287,279,306,106,274,107,294,364,358,363,362,361,
		@@ -1047,38 +1047,55 @@ extern void sun_do_break(void);
		static int emulate_raw(struct vc_data *vc, unsigned int keycode,
		unsigned char up_flag)
		{
		if (keycode > 255 \|\| !x86_keycodes[keycode])
		return -1;
		int code;

		switch (keycode) {
		case KEY_PAUSE:
		put_queue(vc, 0xe1);
		put_queue(vc, 0x1d \| up_flag);
		put_queue(vc, 0x45 \| up_flag);
		return 0;
		break;

		case KEY_HANGEUL:
		if (!up_flag)
		put_queue(vc, 0xf2);
		return 0;
		break;

		case KEY_HANJA:
		if (!up_flag)
		put_queue(vc, 0xf1);
		return 0;
		}
		break;

		if (keycode == KEY_SYSRQ && sysrq_alt) {
		case KEY_SYSRQ:
		/*
		* Real AT keyboards (that's what we're trying
		* to emulate here emit 0xe0 0x2a 0xe0 0x37 when
		* pressing PrtSc/SysRq alone, but simply 0x54
		* when pressing Alt+PrtSc/SysRq.
		*/
		if (sysrq_alt) {
		put_queue(vc, 0x54 \| up_flag);
		return 0;
		} else {
		put_queue(vc, 0xe0);
		put_queue(vc, 0x2a \| up_flag);
		put_queue(vc, 0xe0);
		put_queue(vc, 0x37 \| up_flag);
		}
		break;

		if (x86_keycodes[keycode] & 0x100)
		put_queue(vc, 0xe0);
		default:
		if (keycode > 255)
		return -1;

		put_queue(vc, (x86_keycodes[keycode] & 0x7f) \| up_flag);
		code = x86_keycodes[keycode];
		if (!code)
		return -1;

		if (keycode == KEY_SYSRQ) {
		if (code & 0x100)
		put_queue(vc, 0xe0);
		put_queue(vc, 0x37 \| up_flag);
		put_queue(vc, (code & 0x7f) \| up_flag);

		break;
		}

		return 0;