read.c 9.4 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (c) 2017 Google, Inc
  4. * Written by Simon Glass <sjg@chromium.org>
  5. */
  6. #include <common.h>
  7. #include <dm.h>
  8. #include <dm/of_access.h>
  9. #include <mapmem.h>
  10. #include <asm/global_data.h>
  11. #include <asm/types.h>
  12. #include <asm/io.h>
  13. #include <linux/ioport.h>
  14. int dev_read_u32(const struct udevice *dev, const char *propname, u32 *outp)
  15. {
  16. return ofnode_read_u32(dev_ofnode(dev), propname, outp);
  17. }
  18. int dev_read_u32_default(const struct udevice *dev, const char *propname,
  19. int def)
  20. {
  21. return ofnode_read_u32_default(dev_ofnode(dev), propname, def);
  22. }
  23. int dev_read_u32_index(struct udevice *dev, const char *propname, int index,
  24. u32 *outp)
  25. {
  26. return ofnode_read_u32_index(dev_ofnode(dev), propname, index, outp);
  27. }
  28. u32 dev_read_u32_index_default(struct udevice *dev, const char *propname,
  29. int index, u32 def)
  30. {
  31. return ofnode_read_u32_index_default(dev_ofnode(dev), propname, index,
  32. def);
  33. }
  34. int dev_read_s32(const struct udevice *dev, const char *propname, s32 *outp)
  35. {
  36. return ofnode_read_u32(dev_ofnode(dev), propname, (u32 *)outp);
  37. }
  38. int dev_read_s32_default(const struct udevice *dev, const char *propname,
  39. int def)
  40. {
  41. return ofnode_read_u32_default(dev_ofnode(dev), propname, def);
  42. }
  43. int dev_read_u32u(const struct udevice *dev, const char *propname, uint *outp)
  44. {
  45. u32 val;
  46. int ret;
  47. ret = ofnode_read_u32(dev_ofnode(dev), propname, &val);
  48. if (ret)
  49. return ret;
  50. *outp = val;
  51. return 0;
  52. }
  53. int dev_read_u64(const struct udevice *dev, const char *propname, u64 *outp)
  54. {
  55. return ofnode_read_u64(dev_ofnode(dev), propname, outp);
  56. }
  57. u64 dev_read_u64_default(const struct udevice *dev, const char *propname,
  58. u64 def)
  59. {
  60. return ofnode_read_u64_default(dev_ofnode(dev), propname, def);
  61. }
  62. const char *dev_read_string(const struct udevice *dev, const char *propname)
  63. {
  64. return ofnode_read_string(dev_ofnode(dev), propname);
  65. }
  66. bool dev_read_bool(const struct udevice *dev, const char *propname)
  67. {
  68. return ofnode_read_bool(dev_ofnode(dev), propname);
  69. }
  70. ofnode dev_read_subnode(const struct udevice *dev, const char *subnode_name)
  71. {
  72. return ofnode_find_subnode(dev_ofnode(dev), subnode_name);
  73. }
  74. ofnode dev_read_first_subnode(const struct udevice *dev)
  75. {
  76. return ofnode_first_subnode(dev_ofnode(dev));
  77. }
  78. ofnode dev_read_next_subnode(ofnode node)
  79. {
  80. return ofnode_next_subnode(node);
  81. }
  82. int dev_read_size(const struct udevice *dev, const char *propname)
  83. {
  84. return ofnode_read_size(dev_ofnode(dev), propname);
  85. }
  86. fdt_addr_t dev_read_addr_index(const struct udevice *dev, int index)
  87. {
  88. if (ofnode_is_np(dev_ofnode(dev)))
  89. return ofnode_get_addr_index(dev_ofnode(dev), index);
  90. else
  91. return devfdt_get_addr_index(dev, index);
  92. }
  93. fdt_addr_t dev_read_addr_size_index(const struct udevice *dev, int index,
  94. fdt_size_t *size)
  95. {
  96. if (ofnode_is_np(dev_ofnode(dev)))
  97. return ofnode_get_addr_size_index(dev_ofnode(dev), index, size);
  98. else
  99. return devfdt_get_addr_size_index(dev, index, size);
  100. }
  101. void *dev_remap_addr_index(const struct udevice *dev, int index)
  102. {
  103. fdt_addr_t addr = dev_read_addr_index(dev, index);
  104. if (addr == FDT_ADDR_T_NONE)
  105. return NULL;
  106. return map_physmem(addr, 0, MAP_NOCACHE);
  107. }
  108. fdt_addr_t dev_read_addr_name(const struct udevice *dev, const char *name)
  109. {
  110. int index = dev_read_stringlist_search(dev, "reg-names", name);
  111. if (index < 0)
  112. return FDT_ADDR_T_NONE;
  113. else
  114. return dev_read_addr_index(dev, index);
  115. }
  116. fdt_addr_t dev_read_addr_size_name(const struct udevice *dev, const char *name,
  117. fdt_size_t *size)
  118. {
  119. int index = dev_read_stringlist_search(dev, "reg-names", name);
  120. if (index < 0)
  121. return FDT_ADDR_T_NONE;
  122. else
  123. return dev_read_addr_size_index(dev, index, size);
  124. }
  125. void *dev_remap_addr_name(const struct udevice *dev, const char *name)
  126. {
  127. fdt_addr_t addr = dev_read_addr_name(dev, name);
  128. if (addr == FDT_ADDR_T_NONE)
  129. return NULL;
  130. return map_physmem(addr, 0, MAP_NOCACHE);
  131. }
  132. fdt_addr_t dev_read_addr(const struct udevice *dev)
  133. {
  134. return dev_read_addr_index(dev, 0);
  135. }
  136. void *dev_read_addr_ptr(const struct udevice *dev)
  137. {
  138. fdt_addr_t addr = dev_read_addr(dev);
  139. return (addr == FDT_ADDR_T_NONE) ? NULL : (void *)(uintptr_t)addr;
  140. }
  141. void *dev_remap_addr(const struct udevice *dev)
  142. {
  143. return dev_remap_addr_index(dev, 0);
  144. }
  145. fdt_addr_t dev_read_addr_size(const struct udevice *dev, const char *property,
  146. fdt_size_t *sizep)
  147. {
  148. return ofnode_get_addr_size(dev_ofnode(dev), property, sizep);
  149. }
  150. const char *dev_read_name(const struct udevice *dev)
  151. {
  152. return ofnode_get_name(dev_ofnode(dev));
  153. }
  154. int dev_read_stringlist_search(const struct udevice *dev, const char *property,
  155. const char *string)
  156. {
  157. return ofnode_stringlist_search(dev_ofnode(dev), property, string);
  158. }
  159. int dev_read_string_index(const struct udevice *dev, const char *propname,
  160. int index, const char **outp)
  161. {
  162. return ofnode_read_string_index(dev_ofnode(dev), propname, index, outp);
  163. }
  164. int dev_read_string_count(const struct udevice *dev, const char *propname)
  165. {
  166. return ofnode_read_string_count(dev_ofnode(dev), propname);
  167. }
  168. int dev_read_phandle_with_args(const struct udevice *dev, const char *list_name,
  169. const char *cells_name, int cell_count,
  170. int index, struct ofnode_phandle_args *out_args)
  171. {
  172. return ofnode_parse_phandle_with_args(dev_ofnode(dev), list_name,
  173. cells_name, cell_count, index,
  174. out_args);
  175. }
  176. int dev_count_phandle_with_args(const struct udevice *dev,
  177. const char *list_name, const char *cells_name,
  178. int cell_count)
  179. {
  180. return ofnode_count_phandle_with_args(dev_ofnode(dev), list_name,
  181. cells_name, cell_count);
  182. }
  183. int dev_read_addr_cells(const struct udevice *dev)
  184. {
  185. return ofnode_read_addr_cells(dev_ofnode(dev));
  186. }
  187. int dev_read_size_cells(const struct udevice *dev)
  188. {
  189. return ofnode_read_size_cells(dev_ofnode(dev));
  190. }
  191. int dev_read_simple_addr_cells(const struct udevice *dev)
  192. {
  193. return ofnode_read_simple_addr_cells(dev_ofnode(dev));
  194. }
  195. int dev_read_simple_size_cells(const struct udevice *dev)
  196. {
  197. return ofnode_read_simple_size_cells(dev_ofnode(dev));
  198. }
  199. int dev_read_phandle(const struct udevice *dev)
  200. {
  201. ofnode node = dev_ofnode(dev);
  202. if (ofnode_is_np(node))
  203. return ofnode_to_np(node)->phandle;
  204. else
  205. return fdt_get_phandle(gd->fdt_blob, ofnode_to_offset(node));
  206. }
  207. const void *dev_read_prop(const struct udevice *dev, const char *propname,
  208. int *lenp)
  209. {
  210. return ofnode_get_property(dev_ofnode(dev), propname, lenp);
  211. }
  212. int dev_read_first_prop(const struct udevice *dev, struct ofprop *prop)
  213. {
  214. return ofnode_get_first_property(dev_ofnode(dev), prop);
  215. }
  216. int dev_read_next_prop(struct ofprop *prop)
  217. {
  218. return ofnode_get_next_property(prop);
  219. }
  220. const void *dev_read_prop_by_prop(struct ofprop *prop,
  221. const char **propname, int *lenp)
  222. {
  223. return ofnode_get_property_by_prop(prop, propname, lenp);
  224. }
  225. int dev_read_alias_seq(const struct udevice *dev, int *devnump)
  226. {
  227. ofnode node = dev_ofnode(dev);
  228. const char *uc_name = dev->uclass->uc_drv->name;
  229. int ret = -ENOTSUPP;
  230. if (ofnode_is_np(node)) {
  231. ret = of_alias_get_id(ofnode_to_np(node), uc_name);
  232. if (ret >= 0) {
  233. *devnump = ret;
  234. ret = 0;
  235. }
  236. } else {
  237. #if CONFIG_IS_ENABLED(OF_CONTROL)
  238. ret = fdtdec_get_alias_seq(gd->fdt_blob, uc_name,
  239. ofnode_to_offset(node), devnump);
  240. #endif
  241. }
  242. return ret;
  243. }
  244. int dev_read_u32_array(const struct udevice *dev, const char *propname,
  245. u32 *out_values, size_t sz)
  246. {
  247. return ofnode_read_u32_array(dev_ofnode(dev), propname, out_values, sz);
  248. }
  249. const uint8_t *dev_read_u8_array_ptr(const struct udevice *dev,
  250. const char *propname, size_t sz)
  251. {
  252. return ofnode_read_u8_array_ptr(dev_ofnode(dev), propname, sz);
  253. }
  254. int dev_read_enabled(const struct udevice *dev)
  255. {
  256. ofnode node = dev_ofnode(dev);
  257. if (ofnode_is_np(node))
  258. return of_device_is_available(ofnode_to_np(node));
  259. else
  260. return fdtdec_get_is_enabled(gd->fdt_blob,
  261. ofnode_to_offset(node));
  262. }
  263. int dev_read_resource(const struct udevice *dev, uint index,
  264. struct resource *res)
  265. {
  266. return ofnode_read_resource(dev_ofnode(dev), index, res);
  267. }
  268. int dev_read_resource_byname(const struct udevice *dev, const char *name,
  269. struct resource *res)
  270. {
  271. return ofnode_read_resource_byname(dev_ofnode(dev), name, res);
  272. }
  273. u64 dev_translate_address(const struct udevice *dev, const fdt32_t *in_addr)
  274. {
  275. return ofnode_translate_address(dev_ofnode(dev), in_addr);
  276. }
  277. u64 dev_translate_dma_address(const struct udevice *dev, const fdt32_t *in_addr)
  278. {
  279. return ofnode_translate_dma_address(dev_ofnode(dev), in_addr);
  280. }
  281. int dev_get_dma_range(const struct udevice *dev, phys_addr_t *cpu,
  282. dma_addr_t *bus, u64 *size)
  283. {
  284. return ofnode_get_dma_range(dev_ofnode(dev), cpu, bus, size);
  285. }
  286. int dev_read_alias_highest_id(const char *stem)
  287. {
  288. if (of_live_active())
  289. return of_alias_get_highest_id(stem);
  290. return fdtdec_get_alias_highest_id(gd->fdt_blob, stem);
  291. }
  292. fdt_addr_t dev_read_addr_pci(const struct udevice *dev)
  293. {
  294. ulong addr;
  295. addr = dev_read_addr(dev);
  296. if (addr == FDT_ADDR_T_NONE && !of_live_active())
  297. addr = devfdt_get_addr_pci(dev);
  298. return addr;
  299. }
  300. int dev_get_child_count(const struct udevice *dev)
  301. {
  302. return ofnode_get_child_count(dev_ofnode(dev));
  303. }
  304. int dev_read_pci_bus_range(const struct udevice *dev,
  305. struct resource *res)
  306. {
  307. const u32 *values;
  308. int len;
  309. values = dev_read_prop(dev, "bus-range", &len);
  310. if (!values || len < sizeof(*values) * 2)
  311. return -EINVAL;
  312. res->start = *values++;
  313. res->end = *values;
  314. return 0;
  315. }
  316. int dev_decode_display_timing(const struct udevice *dev, int index,
  317. struct display_timing *config)
  318. {
  319. return ofnode_decode_display_timing(dev_ofnode(dev), index, config);
  320. }