1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2017
4 * Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
5 *
6 * based on the gdsys osd driver, which is
7 *
8 * (C) Copyright 2010
9 * Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de
10 */
11
12 #include <common.h>
13 #include <command.h>
14 #include <dm.h>
15 #include <hexdump.h>
16 #include <video_osd.h>
17 #include <malloc.h>
18
19 /* Container for selected OSD device */
20 static struct udevice *osd_cur;
21
22 /**
23 * cmd_osd_set_osd_num() - Set the OSD selected for operation
24 *
25 * Set the OSD device, which will be used by all subsequent OSD commands.
26 *
27 * Devices are identified by their uclass sequence number (as listed by 'osd
28 * show').
29 *
30 * @osdnum: The OSD device to be selected, identified by its sequence number.
31 * Return: 0 if OK, -ve on error
32 */
cmd_osd_set_osd_num(unsigned int osdnum)33 static int cmd_osd_set_osd_num(unsigned int osdnum)
34 {
35 struct udevice *osd;
36 int res;
37
38 res = uclass_get_device_by_seq(UCLASS_VIDEO_OSD, osdnum, &osd);
39 if (res) {
40 printf("%s: No OSD %u (err = %d)\n", __func__, osdnum, res);
41 return res;
42 }
43 osd_cur = osd;
44
45 return 0;
46 }
47
48 /**
49 * osd_get_osd_cur() - Get the selected OSD device
50 *
51 * Get the OSD device that is used by all OSD commands.
52 *
53 * @osdp: Pointer to structure that will receive the currently selected OSD
54 * device.
55 * Return: 0 if OK, -ve on error
56 */
osd_get_osd_cur(struct udevice ** osdp)57 static int osd_get_osd_cur(struct udevice **osdp)
58 {
59 if (!osd_cur) {
60 puts("No osd selected\n");
61 return -ENODEV;
62 }
63 *osdp = osd_cur;
64
65 return 0;
66 }
67
68 /**
69 * show_osd() - Display information about a OSD device
70 *
71 * Display a device's ID (sequence number), and whether it is active (i.e.
72 * probed) or not.
73 *
74 * @osd: OSD device to print information for
75 */
show_osd(struct udevice * osd)76 static void show_osd(struct udevice *osd)
77 {
78 printf("OSD %d:\t%s", dev_seq(osd), osd->name);
79 if (device_active(osd))
80 printf(" (active)");
81 printf("\n");
82 }
83
do_osd_write(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])84 static int do_osd_write(struct cmd_tbl *cmdtp, int flag, int argc,
85 char *const argv[])
86 {
87 uint x, y;
88 uint count;
89 char *hexstr;
90 u8 *buffer;
91 size_t buflen;
92 int res;
93
94 if (argc < 4 || (strlen(argv[3]) % 2))
95 return CMD_RET_USAGE;
96
97 if (!osd_cur) {
98 puts("No osd selected\n");
99 return CMD_RET_FAILURE;
100 }
101
102 x = simple_strtoul(argv[1], NULL, 16);
103 y = simple_strtoul(argv[2], NULL, 16);
104 hexstr = argv[3];
105 count = (argc > 4) ? simple_strtoul(argv[4], NULL, 16) : 1;
106
107 buflen = strlen(hexstr) / 2;
108
109 buffer = malloc(buflen);
110 if (!buffer) {
111 puts("Memory allocation failure\n");
112 return CMD_RET_FAILURE;
113 }
114
115 res = hex2bin(buffer, hexstr, buflen);
116 if (res) {
117 free(buffer);
118 puts("Hexadecimal input contained invalid characters\n");
119 return CMD_RET_FAILURE;
120 }
121
122 res = video_osd_set_mem(osd_cur, x, y, buffer, buflen, count);
123 if (res) {
124 free(buffer);
125 printf("%s: Could not write to video mem\n",
126 osd_cur->name);
127 return CMD_RET_FAILURE;
128 }
129
130 free(buffer);
131
132 return CMD_RET_SUCCESS;
133 }
134
do_osd_print(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])135 static int do_osd_print(struct cmd_tbl *cmdtp, int flag, int argc,
136 char *const argv[])
137 {
138 uint x, y;
139 u8 color;
140 char *text;
141 int res;
142
143 if (argc < 5)
144 return CMD_RET_USAGE;
145
146 if (!osd_cur) {
147 puts("No osd selected\n");
148 return CMD_RET_FAILURE;
149 }
150
151 x = simple_strtoul(argv[1], NULL, 16);
152 y = simple_strtoul(argv[2], NULL, 16);
153 color = simple_strtoul(argv[3], NULL, 16);
154 text = argv[4];
155
156 res = video_osd_print(osd_cur, x, y, color, text);
157 if (res) {
158 printf("Could not print string to osd %s\n", osd_cur->name);
159 return CMD_RET_FAILURE;
160 }
161
162 return CMD_RET_SUCCESS;
163 }
164
do_osd_size(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])165 static int do_osd_size(struct cmd_tbl *cmdtp, int flag, int argc,
166 char *const argv[])
167 {
168 uint x, y;
169 int res;
170
171 if (argc < 3)
172 return CMD_RET_USAGE;
173
174 if (!osd_cur) {
175 puts("No osd selected\n");
176 return CMD_RET_FAILURE;
177 }
178
179 x = simple_strtoul(argv[1], NULL, 16);
180 y = simple_strtoul(argv[2], NULL, 16);
181
182 res = video_osd_set_size(osd_cur, x, y);
183 if (res) {
184 printf("Could not set size on osd %s\n", osd_cur->name);
185 return CMD_RET_FAILURE;
186 }
187
188 return CMD_RET_SUCCESS;
189 }
190
do_show_osd(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])191 static int do_show_osd(struct cmd_tbl *cmdtp, int flag, int argc,
192 char *const argv[])
193 {
194 struct udevice *osd;
195
196 if (argc == 1) {
197 /* show all OSDs */
198 struct uclass *uc;
199 int res;
200
201 res = uclass_get(UCLASS_VIDEO_OSD, &uc);
202 if (res) {
203 printf("Error while getting OSD uclass (err=%d)\n",
204 res);
205 return CMD_RET_FAILURE;
206 }
207
208 uclass_foreach_dev(osd, uc)
209 show_osd(osd);
210 } else {
211 int i, res;
212
213 /* show specific OSD */
214 i = simple_strtoul(argv[1], NULL, 10);
215
216 res = uclass_get_device_by_seq(UCLASS_VIDEO_OSD, i, &osd);
217 if (res) {
218 printf("Invalid osd %d: err=%d\n", i, res);
219 return CMD_RET_FAILURE;
220 }
221 show_osd(osd);
222 }
223
224 return CMD_RET_SUCCESS;
225 }
226
do_osd_num(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])227 static int do_osd_num(struct cmd_tbl *cmdtp, int flag, int argc,
228 char *const argv[])
229 {
230 int osd_no;
231 int res = 0;
232
233 if (argc == 1) {
234 /* querying current setting */
235 struct udevice *osd;
236
237 if (!osd_get_osd_cur(&osd))
238 osd_no = dev_seq(osd);
239 else
240 osd_no = -1;
241 printf("Current osd is %d\n", osd_no);
242 } else {
243 osd_no = simple_strtoul(argv[1], NULL, 10);
244 printf("Setting osd to %d\n", osd_no);
245
246 res = cmd_osd_set_osd_num(osd_no);
247 if (res)
248 printf("Failure changing osd number (err = %d)\n", res);
249 }
250
251 return res ? CMD_RET_FAILURE : CMD_RET_SUCCESS;
252 }
253
254 static struct cmd_tbl cmd_osd_sub[] = {
255 U_BOOT_CMD_MKENT(show, 1, 1, do_show_osd, "", ""),
256 U_BOOT_CMD_MKENT(dev, 1, 1, do_osd_num, "", ""),
257 U_BOOT_CMD_MKENT(write, 4, 1, do_osd_write, "", ""),
258 U_BOOT_CMD_MKENT(print, 4, 1, do_osd_print, "", ""),
259 U_BOOT_CMD_MKENT(size, 2, 1, do_osd_size, "", ""),
260 };
261
do_osd(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])262 static int do_osd(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
263 {
264 struct cmd_tbl *c;
265
266 if (argc < 2)
267 return CMD_RET_USAGE;
268
269 /* Strip off leading 'osd' command argument */
270 argc--;
271 argv++;
272
273 c = find_cmd_tbl(argv[0], &cmd_osd_sub[0], ARRAY_SIZE(cmd_osd_sub));
274
275 if (c)
276 return c->cmd(cmdtp, flag, argc, argv);
277 else
278 return CMD_RET_USAGE;
279 }
280
281 static char osd_help_text[] =
282 "show - show OSD info\n"
283 "osd dev [dev] - show or set current OSD\n"
284 "write [pos_x] [pos_y] [buffer] [count] - write 8-bit hex encoded buffer to osd memory at a given position\n"
285 "print [pos_x] [pos_y] [color] [text] - write ASCII buffer (given by text data and driver-specific color information) to osd memory\n"
286 "size [size_x] [size_y] - set OSD XY size in characters\n";
287
288 U_BOOT_CMD(
289 osd, 6, 1, do_osd,
290 "OSD sub-system",
291 osd_help_text
292 );
293