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Commit | Line | Data |
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91d3256c | 1 | /* |
3f4978c7 HS |
2 | * Copyright (C) 2009 Sergey Kubushyn <ksi@koi8.net> |
3 | * | |
4 | * Changes for multibus/multiadapter I2C support. | |
5 | * | |
91d3256c WD |
6 | * (C) Copyright 2000 |
7 | * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it | |
8 | * | |
1a459660 | 9 | * SPDX-License-Identifier: GPL-2.0+ |
91d3256c WD |
10 | */ |
11 | ||
12 | #include <config.h> | |
13 | #include <common.h> | |
b206cd73 | 14 | #include <dm.h> |
d97143a6 | 15 | #include <errno.h> |
91d3256c WD |
16 | #include <stdarg.h> |
17 | #include <malloc.h> | |
52cb4d4f | 18 | #include <stdio_dev.h> |
281e00a3 | 19 | #include <serial.h> |
ea818dbb | 20 | |
69153988 | 21 | #if defined(CONFIG_SYS_I2C) |
91d3256c | 22 | #include <i2c.h> |
7f6c2cbc | 23 | #endif |
91d3256c | 24 | |
b206cd73 SG |
25 | #include <dm/device-internal.h> |
26 | ||
d87080b7 WD |
27 | DECLARE_GLOBAL_DATA_PTR; |
28 | ||
52cb4d4f JCPV |
29 | static struct stdio_dev devs; |
30 | struct stdio_dev *stdio_devices[] = { NULL, NULL, NULL }; | |
91d3256c WD |
31 | char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" }; |
32 | ||
6d0f6bcf JCPV |
33 | #if defined(CONFIG_SPLASH_SCREEN) && !defined(CONFIG_SYS_DEVICE_NULLDEV) |
34 | #define CONFIG_SYS_DEVICE_NULLDEV 1 | |
d791b1dc WD |
35 | #endif |
36 | ||
869588de | 37 | #if CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER) |
32d01926 HG |
38 | #define CONFIG_SYS_DEVICE_NULLDEV 1 |
39 | #endif | |
d791b1dc | 40 | |
6d0f6bcf | 41 | #ifdef CONFIG_SYS_DEVICE_NULLDEV |
654f8d0f | 42 | static void nulldev_putc(struct stdio_dev *dev, const char c) |
91d3256c | 43 | { |
c1de7a6d | 44 | /* nulldev is empty! */ |
91d3256c WD |
45 | } |
46 | ||
654f8d0f | 47 | static void nulldev_puts(struct stdio_dev *dev, const char *s) |
91d3256c | 48 | { |
c1de7a6d | 49 | /* nulldev is empty! */ |
91d3256c WD |
50 | } |
51 | ||
654f8d0f | 52 | static int nulldev_input(struct stdio_dev *dev) |
91d3256c | 53 | { |
c1de7a6d JCPV |
54 | /* nulldev is empty! */ |
55 | return 0; | |
91d3256c WD |
56 | } |
57 | #endif | |
58 | ||
654f8d0f | 59 | static void stdio_serial_putc(struct stdio_dev *dev, const char c) |
709ea543 SG |
60 | { |
61 | serial_putc(c); | |
62 | } | |
63 | ||
654f8d0f | 64 | static void stdio_serial_puts(struct stdio_dev *dev, const char *s) |
709ea543 SG |
65 | { |
66 | serial_puts(s); | |
67 | } | |
68 | ||
654f8d0f | 69 | static int stdio_serial_getc(struct stdio_dev *dev) |
709ea543 SG |
70 | { |
71 | return serial_getc(); | |
72 | } | |
73 | ||
654f8d0f | 74 | static int stdio_serial_tstc(struct stdio_dev *dev) |
709ea543 SG |
75 | { |
76 | return serial_tstc(); | |
77 | } | |
78 | ||
91d3256c WD |
79 | /************************************************************************** |
80 | * SYSTEM DRIVERS | |
81 | ************************************************************************** | |
82 | */ | |
83 | ||
84 | static void drv_system_init (void) | |
85 | { | |
52cb4d4f | 86 | struct stdio_dev dev; |
91d3256c WD |
87 | |
88 | memset (&dev, 0, sizeof (dev)); | |
89 | ||
90 | strcpy (dev.name, "serial"); | |
1caf934a | 91 | dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT; |
709ea543 SG |
92 | dev.putc = stdio_serial_putc; |
93 | dev.puts = stdio_serial_puts; | |
94 | dev.getc = stdio_serial_getc; | |
95 | dev.tstc = stdio_serial_tstc; | |
52cb4d4f | 96 | stdio_register (&dev); |
91d3256c | 97 | |
6d0f6bcf | 98 | #ifdef CONFIG_SYS_DEVICE_NULLDEV |
91d3256c WD |
99 | memset (&dev, 0, sizeof (dev)); |
100 | ||
101 | strcpy (dev.name, "nulldev"); | |
1caf934a | 102 | dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT; |
91d3256c WD |
103 | dev.putc = nulldev_putc; |
104 | dev.puts = nulldev_puts; | |
105 | dev.getc = nulldev_input; | |
106 | dev.tstc = nulldev_input; | |
107 | ||
52cb4d4f | 108 | stdio_register (&dev); |
91d3256c WD |
109 | #endif |
110 | } | |
111 | ||
112 | /************************************************************************** | |
113 | * DEVICES | |
114 | ************************************************************************** | |
115 | */ | |
52cb4d4f | 116 | struct list_head* stdio_get_list(void) |
c1de7a6d JCPV |
117 | { |
118 | return &(devs.list); | |
119 | } | |
120 | ||
d8441ea2 SG |
121 | #ifdef CONFIG_DM_VIDEO |
122 | /** | |
123 | * stdio_probe_device() - Find a device which provides the given stdio device | |
124 | * | |
125 | * This looks for a device of the given uclass which provides a particular | |
126 | * stdio device. It is currently really only useful for UCLASS_VIDEO. | |
127 | * | |
128 | * Ultimately we want to be able to probe a device by its stdio name. At | |
129 | * present devices register in their probe function (for video devices this | |
130 | * is done in vidconsole_post_probe()) and we don't know what name they will | |
131 | * use until they do so. | |
132 | * TODO(sjg@chromium.org): We should be able to determine the name before | |
133 | * probing, and probe the required device. | |
134 | * | |
135 | * @name: stdio device name (e.g. "vidconsole") | |
136 | * id: Uclass ID of device to look for (e.g. UCLASS_VIDEO) | |
137 | * @sdevp: Returns stdout device, if found, else NULL | |
138 | * @return 0 if found, -ENOENT if no device found with that name, other -ve | |
139 | * on other error | |
140 | */ | |
141 | static int stdio_probe_device(const char *name, enum uclass_id id, | |
142 | struct stdio_dev **sdevp) | |
143 | { | |
144 | struct stdio_dev *sdev; | |
145 | struct udevice *dev; | |
146 | int seq, ret; | |
147 | ||
148 | *sdevp = NULL; | |
149 | seq = trailing_strtoln(name, NULL); | |
150 | if (seq == -1) | |
d844efec SG |
151 | seq = 0; |
152 | ret = uclass_get_device_by_seq(id, seq, &dev); | |
153 | if (ret == -ENODEV) | |
d8441ea2 | 154 | ret = uclass_first_device_err(id, &dev); |
d8441ea2 SG |
155 | if (ret) { |
156 | debug("No %s device for seq %d (%s)\n", uclass_get_name(id), | |
157 | seq, name); | |
158 | return ret; | |
159 | } | |
160 | /* The device should be be the last one registered */ | |
161 | sdev = list_empty(&devs.list) ? NULL : | |
162 | list_last_entry(&devs.list, struct stdio_dev, list); | |
163 | if (!sdev || strcmp(sdev->name, name)) { | |
164 | debug("Device '%s' did not register with stdio as '%s'\n", | |
165 | dev->name, name); | |
166 | return -ENOENT; | |
167 | } | |
168 | *sdevp = sdev; | |
169 | ||
170 | return 0; | |
171 | } | |
172 | #endif | |
173 | ||
ab29a34a | 174 | struct stdio_dev *stdio_get_by_name(const char *name) |
c1de7a6d JCPV |
175 | { |
176 | struct list_head *pos; | |
d8441ea2 | 177 | struct stdio_dev *sdev; |
c1de7a6d | 178 | |
ab29a34a | 179 | if (!name) |
c1de7a6d JCPV |
180 | return NULL; |
181 | ||
182 | list_for_each(pos, &(devs.list)) { | |
d8441ea2 SG |
183 | sdev = list_entry(pos, struct stdio_dev, list); |
184 | if (strcmp(sdev->name, name) == 0) | |
185 | return sdev; | |
c1de7a6d | 186 | } |
d8441ea2 SG |
187 | #ifdef CONFIG_DM_VIDEO |
188 | /* | |
189 | * We did not find a suitable stdio device. If there is a video | |
190 | * driver with a name starting with 'vidconsole', we can try probing | |
191 | * that in the hope that it will produce the required stdio device. | |
192 | * | |
193 | * This function is sometimes called with the entire value of | |
194 | * 'stdout', which may include a list of devices separate by commas. | |
195 | * Obviously this is not going to work, so we ignore that case. The | |
196 | * call path in that case is console_init_r() -> search_device() -> | |
197 | * stdio_get_by_name(). | |
198 | */ | |
199 | if (!strncmp(name, "vidconsole", 10) && !strchr(name, ',') && | |
200 | !stdio_probe_device(name, UCLASS_VIDEO, &sdev)) | |
201 | return sdev; | |
202 | #endif | |
c1de7a6d JCPV |
203 | |
204 | return NULL; | |
205 | } | |
206 | ||
52cb4d4f | 207 | struct stdio_dev* stdio_clone(struct stdio_dev *dev) |
628ffd73 | 208 | { |
52cb4d4f | 209 | struct stdio_dev *_dev; |
628ffd73 JCPV |
210 | |
211 | if(!dev) | |
212 | return NULL; | |
213 | ||
52cb4d4f | 214 | _dev = calloc(1, sizeof(struct stdio_dev)); |
628ffd73 JCPV |
215 | |
216 | if(!_dev) | |
217 | return NULL; | |
218 | ||
52cb4d4f | 219 | memcpy(_dev, dev, sizeof(struct stdio_dev)); |
628ffd73 JCPV |
220 | |
221 | return _dev; | |
222 | } | |
91d3256c | 223 | |
d97143a6 | 224 | int stdio_register_dev(struct stdio_dev *dev, struct stdio_dev **devp) |
91d3256c | 225 | { |
52cb4d4f | 226 | struct stdio_dev *_dev; |
628ffd73 | 227 | |
52cb4d4f | 228 | _dev = stdio_clone(dev); |
628ffd73 | 229 | if(!_dev) |
d97143a6 | 230 | return -ENODEV; |
3e3c026e | 231 | list_add_tail(&(_dev->list), &(devs.list)); |
d97143a6 SG |
232 | if (devp) |
233 | *devp = _dev; | |
234 | ||
91d3256c WD |
235 | return 0; |
236 | } | |
237 | ||
d97143a6 SG |
238 | int stdio_register(struct stdio_dev *dev) |
239 | { | |
240 | return stdio_register_dev(dev, NULL); | |
241 | } | |
242 | ||
91d3256c WD |
243 | /* deregister the device "devname". |
244 | * returns 0 if success, -1 if device is assigned and 1 if devname not found | |
245 | */ | |
869588de | 246 | #if CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER) |
32d01926 | 247 | int stdio_deregister_dev(struct stdio_dev *dev, int force) |
91d3256c | 248 | { |
c1de7a6d JCPV |
249 | int l; |
250 | struct list_head *pos; | |
03bf22f5 | 251 | char temp_names[3][16]; |
91d3256c | 252 | |
91d3256c WD |
253 | /* get stdio devices (ListRemoveItem changes the dev list) */ |
254 | for (l=0 ; l< MAX_FILES; l++) { | |
255 | if (stdio_devices[l] == dev) { | |
32d01926 HG |
256 | if (force) { |
257 | strcpy(temp_names[l], "nulldev"); | |
258 | continue; | |
259 | } | |
91d3256c WD |
260 | /* Device is assigned -> report error */ |
261 | return -1; | |
262 | } | |
263 | memcpy (&temp_names[l][0], | |
264 | stdio_devices[l]->name, | |
03bf22f5 | 265 | sizeof(temp_names[l])); |
91d3256c | 266 | } |
c1de7a6d JCPV |
267 | |
268 | list_del(&(dev->list)); | |
88274b6c | 269 | free(dev); |
c1de7a6d | 270 | |
91d3256c | 271 | /* reassign Device list */ |
c1de7a6d | 272 | list_for_each(pos, &(devs.list)) { |
52cb4d4f | 273 | dev = list_entry(pos, struct stdio_dev, list); |
91d3256c | 274 | for (l=0 ; l< MAX_FILES; l++) { |
c1de7a6d | 275 | if(strcmp(dev->name, temp_names[l]) == 0) |
91d3256c | 276 | stdio_devices[l] = dev; |
91d3256c WD |
277 | } |
278 | } | |
279 | return 0; | |
280 | } | |
d97143a6 | 281 | |
32d01926 | 282 | int stdio_deregister(const char *devname, int force) |
d97143a6 SG |
283 | { |
284 | struct stdio_dev *dev; | |
285 | ||
286 | dev = stdio_get_by_name(devname); | |
287 | ||
288 | if (!dev) /* device not found */ | |
289 | return -ENODEV; | |
290 | ||
32d01926 | 291 | return stdio_deregister_dev(dev, force); |
d97143a6 | 292 | } |
869588de | 293 | #endif /* CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER) */ |
91d3256c | 294 | |
9fb02491 | 295 | int stdio_init_tables(void) |
91d3256c | 296 | { |
2e5167cc | 297 | #if defined(CONFIG_NEEDS_MANUAL_RELOC) |
521af04d | 298 | /* already relocated for current ARM implementation */ |
91d3256c | 299 | ulong relocation_offset = gd->reloc_off; |
3595ac49 | 300 | int i; |
91d3256c WD |
301 | |
302 | /* relocate device name pointers */ | |
303 | for (i = 0; i < (sizeof (stdio_names) / sizeof (char *)); ++i) { | |
304 | stdio_names[i] = (char *) (((ulong) stdio_names[i]) + | |
305 | relocation_offset); | |
306 | } | |
2e5167cc | 307 | #endif /* CONFIG_NEEDS_MANUAL_RELOC */ |
91d3256c WD |
308 | |
309 | /* Initialize the list */ | |
c1de7a6d | 310 | INIT_LIST_HEAD(&(devs.list)); |
91d3256c | 311 | |
9fb02491 SG |
312 | return 0; |
313 | } | |
314 | ||
315 | int stdio_add_devices(void) | |
316 | { | |
b206cd73 SG |
317 | #ifdef CONFIG_DM_KEYBOARD |
318 | struct udevice *dev; | |
319 | struct uclass *uc; | |
320 | int ret; | |
321 | ||
322 | /* | |
323 | * For now we probe all the devices here. At some point this should be | |
324 | * done only when the devices are required - e.g. we have a list of | |
325 | * input devices to start up in the stdin environment variable. That | |
326 | * work probably makes more sense when stdio itself is converted to | |
327 | * driver model. | |
328 | * | |
329 | * TODO(sjg@chromium.org): Convert changing uclass_first_device() etc. | |
330 | * to return the device even on error. Then we could use that here. | |
331 | */ | |
332 | ret = uclass_get(UCLASS_KEYBOARD, &uc); | |
333 | if (ret) | |
334 | return ret; | |
335 | ||
336 | /* Don't report errors to the caller - assume that they are non-fatal */ | |
337 | uclass_foreach_dev(dev, uc) { | |
338 | ret = device_probe(dev); | |
339 | if (ret) | |
340 | printf("Failed to probe keyboard '%s'\n", dev->name); | |
341 | } | |
342 | #endif | |
3f4978c7 | 343 | #ifdef CONFIG_SYS_I2C |
3f4978c7 | 344 | i2c_init_all(); |
3f4978c7 | 345 | #else |
3f4978c7 | 346 | #endif |
e3b81c1c | 347 | #ifdef CONFIG_DM_VIDEO |
d8441ea2 SG |
348 | /* |
349 | * If the console setting is not in environment variables then | |
350 | * console_init_r() will not be calling iomux_doenv() (which calls | |
351 | * search_device()). So we will not dynamically add devices by | |
352 | * calling stdio_probe_device(). | |
353 | * | |
354 | * So just probe all video devices now so that whichever one is | |
355 | * required will be available. | |
356 | */ | |
357 | #ifndef CONFIG_SYS_CONSOLE_IS_IN_ENV | |
e3b81c1c | 358 | struct udevice *vdev; |
35a1f0df SG |
359 | # ifndef CONFIG_DM_KEYBOARD |
360 | int ret; | |
361 | # endif | |
e3b81c1c SG |
362 | |
363 | for (ret = uclass_first_device(UCLASS_VIDEO, &vdev); | |
364 | vdev; | |
365 | ret = uclass_next_device(&vdev)) | |
366 | ; | |
367 | if (ret) | |
368 | printf("%s: Video device failed (ret=%d)\n", __func__, ret); | |
d8441ea2 | 369 | #endif /* !CONFIG_SYS_CONSOLE_IS_IN_ENV */ |
e3b81c1c SG |
370 | #else |
371 | # if defined(CONFIG_LCD) | |
91d3256c | 372 | drv_lcd_init (); |
e3b81c1c SG |
373 | # endif |
374 | # if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE) | |
91d3256c | 375 | drv_video_init (); |
e3b81c1c SG |
376 | # endif |
377 | #endif /* CONFIG_DM_VIDEO */ | |
b206cd73 | 378 | #if defined(CONFIG_KEYBOARD) && !defined(CONFIG_DM_KEYBOARD) |
682011ff | 379 | drv_keyboard_init (); |
91d3256c WD |
380 | #endif |
381 | drv_system_init (); | |
52cb4d4f | 382 | serial_stdio_init (); |
232c150a WD |
383 | #ifdef CONFIG_USB_TTY |
384 | drv_usbtty_init (); | |
385 | #endif | |
68ceb29e WD |
386 | #ifdef CONFIG_NETCONSOLE |
387 | drv_nc_init (); | |
388 | #endif | |
36ea8e9a MF |
389 | #ifdef CONFIG_JTAG_CONSOLE |
390 | drv_jtag_console_init (); | |
391 | #endif | |
98ab435f VB |
392 | #ifdef CONFIG_CBMEM_CONSOLE |
393 | cbmemc_init(); | |
394 | #endif | |
9fb02491 SG |
395 | |
396 | return 0; | |
397 | } | |
398 | ||
399 | int stdio_init(void) | |
400 | { | |
401 | stdio_init_tables(); | |
402 | stdio_add_devices(); | |
403 | ||
404 | return 0; | |
91d3256c | 405 | } |