1 // SPDX-License-Identifier: GPL-2.0-or-later
8  *  Copyright (C) Samuel Thibault <samuel.thibault@ens-lyon.org>
25 MODULE_AUTHOR("samuel.thibault@ens-lyon.org");
44 #define WIDTH 40  macro
46 static u16 console_buf[WIDTH];
56 static int lastVC = -1;
60 /* Very VisioBraille-specific */
63 	static u16 lastwrite[WIDTH];  in braille_write()
64 	unsigned char data[1 + 1 + 2*WIDTH + 2 + 1], csum = 0, *c;  in braille_write()  local
71 	if (!memcmp(lastwrite, buf, WIDTH * sizeof(*buf)))  in braille_write()
73 	memcpy(lastwrite, buf, WIDTH * sizeof(*buf));  in braille_write()
80 	data[0] = STX;  in braille_write()
81 	data[1] = '>';  in braille_write()
83 	c = &data[2];  in braille_write()
84 	for (i = 0; i < WIDTH; i++) {  in braille_write()
105 	braille_co->write(braille_co, data, c - data);  in braille_write()
111 	vc_x = vc->state.x - (vc->state.x % WIDTH);  in vc_follow_cursor()
112 	vc_y = vc->state.y;  in vc_follow_cursor()
113 	lastvc_x = vc->state.x;  in vc_follow_cursor()
114 	lastvc_y = vc->state.y;  in vc_follow_cursor()
120 	if (vc->state.x != lastvc_x || vc->state.y != lastvc_y)  in vc_maybe_cursor_moved()
127 	u16 buf[WIDTH];  in vc_refresh()
130 	for (i = 0; i < WIDTH; i++) {  in vc_refresh()
132 				2 * (vc_x + i) + vc_y * vc->vc_size_row);  in vc_refresh()
146 	struct vc_data *vc = param->vc;  in keyboard_notifier_call()
149 	if (!param->down)  in keyboard_notifier_call()
155 			if (param->value == BRAILLE_KEY) {  in keyboard_notifier_call()
164 			switch (param->value) {  in keyboard_notifier_call()
168 				lastVC = -1;  in keyboard_notifier_call()
173 					vc_x -= WIDTH;  in keyboard_notifier_call()
178 					vc_y--;  in keyboard_notifier_call()
179 					vc_x = vc->vc_cols-WIDTH;  in keyboard_notifier_call()
184 				if (vc_x + WIDTH < vc->vc_cols) {  in keyboard_notifier_call()
185 					vc_x += WIDTH;  in keyboard_notifier_call()
186 				} else if (vc_y + 1 < vc->vc_rows) {  in keyboard_notifier_call()
194 				if (vc_y + 1 < vc->vc_rows)  in keyboard_notifier_call()
201 					vc_y--;  in keyboard_notifier_call()
214 				vc_y = vc->vc_rows-1;  in keyboard_notifier_call()
226 		unsigned char type = KTYP(param->value) - 0xf0;  in keyboard_notifier_call()
229 			unsigned char val = KVAL(param->value);  in keyboard_notifier_call()
230 			int on_off = -1;  in keyboard_notifier_call()
267 	struct vc_data *vc = param->vc;  in vt_notifier_call()
276 		unsigned char c = param->c;  in vt_notifier_call()
278 		if (vc->vc_num != fg_console)  in vt_notifier_call()
284 				console_cursor--;  in vt_notifier_call()
306 			if (console_cursor == WIDTH)  in vt_notifier_call()
308 					(WIDTH-1) * sizeof(*console_buf));  in vt_notifier_call()
311 			console_buf[console_cursor-1] = c;  in vt_notifier_call()
325 			if (vc->vc_num != lastVC) {  in vt_notifier_call()
326 				lastVC = vc->vc_num;  in vt_notifier_call()
357 		return -ENODEV;  in braille_register_console()
358 	if (console->setup) {  in braille_register_console()
359 		ret = console->setup(console, console_options);  in braille_register_console()
363 	console->flags |= CON_ENABLED;  in braille_register_console()
364 	console->index = index;  in braille_register_console()
374 		return -EINVAL;  in braille_unregister_console()