1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (c) 2015 Google, Inc
4 * (C) Copyright 2015
5 * Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com
6 * (C) Copyright 2023 Dzmitry Sankouski <dsankouski@gmail.com>
7 */
8
9 #include <video.h>
10 #include <video_console.h>
11 #include <dm.h>
12 #include <video_font.h>
13 #include "vidconsole_internal.h"
14
15 /**
16 * console_set_font() - prepare vidconsole for chosen font.
17 *
18 * @dev vidconsole device
19 * @fontdata pointer to font data struct
20 */
console_set_font(struct udevice * dev,struct video_fontdata * fontdata)21 static int console_set_font(struct udevice *dev, struct video_fontdata *fontdata)
22 {
23 struct console_simple_priv *priv = dev_get_priv(dev);
24 struct vidconsole_priv *vc_priv = dev_get_uclass_priv(dev);
25 struct video_priv *vid_priv = dev_get_uclass_priv(dev->parent);
26
27 debug("console_simple: setting %s font\n", fontdata->name);
28 debug("width: %d\n", fontdata->width);
29 debug("byte width: %d\n", fontdata->byte_width);
30 debug("height: %d\n", fontdata->height);
31
32 priv->fontdata = fontdata;
33 vc_priv->x_charsize = fontdata->width;
34 vc_priv->y_charsize = fontdata->height;
35 if (vid_priv->rot % 2) {
36 vc_priv->cols = vid_priv->ysize / fontdata->width;
37 vc_priv->rows = vid_priv->xsize / fontdata->height;
38 vc_priv->xsize_frac = VID_TO_POS(vid_priv->ysize);
39 } else {
40 vc_priv->cols = vid_priv->xsize / fontdata->width;
41 vc_priv->rows = vid_priv->ysize / fontdata->height;
42 }
43
44 return 0;
45 }
46
check_bpix_support(int bpix)47 int check_bpix_support(int bpix)
48 {
49 if (bpix == VIDEO_BPP8 && CONFIG_IS_ENABLED(VIDEO_BPP8))
50 return 0;
51 else if (bpix == VIDEO_BPP16 && CONFIG_IS_ENABLED(VIDEO_BPP16))
52 return 0;
53 else if (bpix == VIDEO_BPP32 && CONFIG_IS_ENABLED(VIDEO_BPP32))
54 return 0;
55 else
56 return -ENOSYS;
57 }
58
fill_pixel_and_goto_next(void ** dstp,u32 value,int pbytes,int step)59 inline void fill_pixel_and_goto_next(void **dstp, u32 value, int pbytes, int step)
60 {
61 u8 *dst_byte = *dstp;
62
63 if (pbytes == 4) {
64 u32 *dst = *dstp;
65 *dst = value;
66 }
67 if (pbytes == 2) {
68 u16 *dst = *dstp;
69 *dst = value;
70 }
71 if (pbytes == 1) {
72 u8 *dst = *dstp;
73 *dst = value;
74 }
75 *dstp = dst_byte + step;
76 }
77
fill_char_vertically(uchar * pfont,void ** line,struct video_priv * vid_priv,struct video_fontdata * fontdata,bool direction)78 int fill_char_vertically(uchar *pfont, void **line, struct video_priv *vid_priv,
79 struct video_fontdata *fontdata, bool direction)
80 {
81 int step, line_step, pbytes, bitcount, width_remainder, ret;
82 void *dst;
83
84 ret = check_bpix_support(vid_priv->bpix);
85 if (ret)
86 return ret;
87
88 pbytes = VNBYTES(vid_priv->bpix);
89 if (direction) {
90 step = -pbytes;
91 line_step = -vid_priv->line_length;
92 } else {
93 step = pbytes;
94 line_step = vid_priv->line_length;
95 }
96
97 width_remainder = fontdata->width % 8;
98 for (int row = 0; row < fontdata->height; row++) {
99 uchar bits;
100
101 bitcount = 8;
102 dst = *line;
103 for (int col = 0; col < fontdata->byte_width; col++) {
104 if (width_remainder) {
105 bool is_last_col = (fontdata->byte_width - col == 1);
106
107 if (is_last_col)
108 bitcount = width_remainder;
109 }
110 bits = pfont[col];
111
112 for (int bit = 0; bit < bitcount; bit++) {
113 u32 value = (bits & 0x80) ?
114 vid_priv->colour_fg :
115 vid_priv->colour_bg;
116
117 fill_pixel_and_goto_next(&dst,
118 value,
119 pbytes,
120 step
121 );
122 bits <<= 1;
123 }
124 }
125 *line += line_step;
126 pfont += fontdata->byte_width;
127 }
128 return ret;
129 }
130
fill_char_horizontally(uchar * pfont,void ** line,struct video_priv * vid_priv,struct video_fontdata * fontdata,bool direction)131 int fill_char_horizontally(uchar *pfont, void **line, struct video_priv *vid_priv,
132 struct video_fontdata *fontdata, bool direction)
133 {
134 int step, line_step, pbytes, bitcount = 8, width_remainder, ret;
135 void *dst;
136 u8 mask;
137
138 ret = check_bpix_support(vid_priv->bpix);
139 if (ret)
140 return ret;
141
142 pbytes = VNBYTES(vid_priv->bpix);
143 if (direction) {
144 step = -pbytes;
145 line_step = vid_priv->line_length;
146 } else {
147 step = pbytes;
148 line_step = -vid_priv->line_length;
149 }
150
151 width_remainder = fontdata->width % 8;
152 for (int col = 0; col < fontdata->byte_width; col++) {
153 mask = 0x80;
154 if (width_remainder) {
155 bool is_last_col = (fontdata->byte_width - col == 1);
156
157 if (is_last_col)
158 bitcount = width_remainder;
159 }
160 for (int bit = 0; bit < bitcount; bit++) {
161 dst = *line;
162 for (int row = 0; row < fontdata->height; row++) {
163 u32 value = (pfont[row * fontdata->byte_width + col]
164 & mask) ? vid_priv->colour_fg : vid_priv->colour_bg;
165
166 fill_pixel_and_goto_next(&dst,
167 value,
168 pbytes,
169 step
170 );
171 }
172 *line += line_step;
173 mask >>= 1;
174 }
175 }
176 return ret;
177 }
178
draw_cursor_vertically(void ** line,struct video_priv * vid_priv,uint height,bool direction)179 int draw_cursor_vertically(void **line, struct video_priv *vid_priv,
180 uint height, bool direction)
181 {
182 int step, line_step, pbytes, ret;
183 uint value;
184 void *dst;
185
186 ret = check_bpix_support(vid_priv->bpix);
187 if (ret)
188 return ret;
189
190 pbytes = VNBYTES(vid_priv->bpix);
191 if (direction) {
192 step = -pbytes;
193 line_step = -vid_priv->line_length;
194 } else {
195 step = pbytes;
196 line_step = vid_priv->line_length;
197 }
198
199 value = vid_priv->colour_fg;
200
201 for (int row = 0; row < height; row++) {
202 dst = *line;
203 for (int col = 0; col < VIDCONSOLE_CURSOR_WIDTH; col++)
204 fill_pixel_and_goto_next(&dst, value, pbytes, step);
205 *line += line_step;
206 }
207 return ret;
208 }
209
console_probe(struct udevice * dev)210 int console_probe(struct udevice *dev)
211 {
212 return console_set_font(dev, fonts);
213 }
214
console_simple_get_font_size(struct udevice * dev,uint * sizep)215 const char *console_simple_get_font_size(struct udevice *dev, uint *sizep)
216 {
217 struct console_simple_priv *priv = dev_get_priv(dev);
218
219 *sizep = priv->fontdata->width;
220
221 return priv->fontdata->name;
222 }
223
console_simple_get_font(struct udevice * dev,int seq,struct vidfont_info * info)224 int console_simple_get_font(struct udevice *dev, int seq, struct vidfont_info *info)
225 {
226 info->name = fonts[seq].name;
227
228 return info->name ? 0 : -ENOENT;
229 }
230
console_simple_select_font(struct udevice * dev,const char * name,uint size)231 int console_simple_select_font(struct udevice *dev, const char *name, uint size)
232 {
233 struct video_fontdata *font;
234
235 if (!name) {
236 if (fonts->name)
237 console_set_font(dev, fonts);
238 return 0;
239 }
240
241 for (font = fonts; font->name; font++) {
242 if (!strcmp(name, font->name)) {
243 console_set_font(dev, font);
244 return 0;
245 }
246 };
247 printf("no such font: %s, make sure it's name has <width>x<height> format\n", name);
248 return -ENOENT;
249 }
250