cmd/osd.c

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