1 // SPDX-License-Identifier: GPL-2.0
24 static void draw_byte_32(const unsigned char *bits, unsigned int *base, int rb);
25 static void draw_byte_16(const unsigned char *bits, unsigned int *base, int rb);
26 static void draw_byte_8(const unsigned char *bits, unsigned int *base, int rb);
47 		return -EINVAL;  in btext_initialize()
49 		return -EINVAL;  in btext_initialize()
51 		return -EINVAL;  in btext_initialize()
68 		return -EINVAL;  in btext_initialize()
73 	g_max_loc_Y = height / 16;  in btext_initialize()
76 	dispDeviceDepth = depth == 15 ? 16 : depth;  in btext_initialize()
97 	unsigned long width 	= ((dispDeviceRect[2] - dispDeviceRect[0]) *  in btext_clearscreen()
101 	for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1]); i++)  in btext_clearscreen()
104 		for(j=width; j; --j)  in btext_clearscreen()
113 	unsigned int *src     	= (unsigned int *)calc_base(0,16);  in scrollscreen()
115 	unsigned long width    	= ((dispDeviceRect[2] - dispDeviceRect[0]) *  in scrollscreen()
119 	for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1] - 16); i++)  in scrollscreen()
123 		for(j=width; j; --j)  in scrollscreen()
128 	for (i=0; i<16; i++)  in scrollscreen()
131 		for(j=width; j; --j)  in scrollscreen()
147 			--g_loc_X;  in btext_drawchar()
150 		g_loc_X = (g_loc_X & -8) + 8;  in btext_drawchar()
171 		g_loc_Y--;  in btext_drawchar()
175 	   waste time scrolling each line.  -- paulus. */  in btext_drawchar()
187 	while (len--)  in btext_drawtext()
194 	unsigned int font_index = c * 16;  in draw_byte()
204 	case 16:  in draw_byte()
213 static unsigned int expand_bits_8[16] = {
242 	int l, bits;  in draw_byte_32()  local
246 	for (l = 0; l < 16; ++l)  in draw_byte_32()
248 		bits = *font++;  in draw_byte_32()
249 		base[0] = (-(bits >> 7) & fg) ^ bg;  in draw_byte_32()
250 		base[1] = (-((bits >> 6) & 1) & fg) ^ bg;  in draw_byte_32()
251 		base[2] = (-((bits >> 5) & 1) & fg) ^ bg;  in draw_byte_32()
252 		base[3] = (-((bits >> 4) & 1) & fg) ^ bg;  in draw_byte_32()
253 		base[4] = (-((bits >> 3) & 1) & fg) ^ bg;  in draw_byte_32()
254 		base[5] = (-((bits >> 2) & 1) & fg) ^ bg;  in draw_byte_32()
255 		base[6] = (-((bits >> 1) & 1) & fg) ^ bg;  in draw_byte_32()
256 		base[7] = (-(bits & 1) & fg) ^ bg;  in draw_byte_32()
263 	int l, bits;  in draw_byte_16()  local
268 	for (l = 0; l < 16; ++l)  in draw_byte_16()
270 		bits = *font++;  in draw_byte_16()
271 		base[0] = (eb[bits >> 6] & fg) ^ bg;  in draw_byte_16()
272 		base[1] = (eb[(bits >> 4) & 3] & fg) ^ bg;  in draw_byte_16()
273 		base[2] = (eb[(bits >> 2) & 3] & fg) ^ bg;  in draw_byte_16()
274 		base[3] = (eb[bits & 3] & fg) ^ bg;  in draw_byte_16()
281 	int l, bits;  in draw_byte_8()  local
286 	for (l = 0; l < 16; ++l)  in draw_byte_8()
288 		bits = *font++;  in draw_byte_8()
289 		base[0] = (eb[bits >> 4] & fg) ^ bg;  in draw_byte_8()
290 		base[1] = (eb[bits & 0xf] & fg) ^ bg;  in draw_byte_8()
316 		return -ENODEV;  in btext_find_display()
318 		return -ENODEV;  in btext_find_display()