diff options
author | Stefano Babic <sbabic@denx.de> | 2014-04-04 11:35:30 +0200 |
---|---|---|
committer | Stefano Babic <sbabic@denx.de> | 2014-04-04 11:35:30 +0200 |
commit | 1cad23c5f471d695bed1e3907e30caee3c2a3056 (patch) | |
tree | 34e035df5db9b327aeae36eff9d0645a915e3177 /drivers/core/lists.c | |
parent | 5dd73bc0a40a4b318195eab871a1f535aad6b43b (diff) | |
parent | 00b132bf34c5be86a108ac7fe8231ad9e97f6de4 (diff) |
Merge branch 'master' of git://git.denx.de/u-boot-arm into master
Conflicts:
arch/arm/cpu/arm926ejs/mxs/mxsimage.mx23.cfg
arch/arm/cpu/arm926ejs/mxs/mxsimage.mx28.cfg
Signed-off-by: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'drivers/core/lists.c')
-rw-r--r-- | drivers/core/lists.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/drivers/core/lists.c b/drivers/core/lists.c new file mode 100644 index 0000000000..4f2c12631d --- /dev/null +++ b/drivers/core/lists.c @@ -0,0 +1,155 @@ +/* + * Copyright (c) 2013 Google, Inc + * + * (C) Copyright 2012 + * Marek Vasut <marex@denx.de> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <errno.h> +#include <dm/device.h> +#include <dm/device-internal.h> +#include <dm/platdata.h> +#include <dm/uclass.h> +#include <dm/util.h> +#include <linux/compiler.h> + +struct driver *lists_driver_lookup_name(const char *name) +{ + struct driver *drv = + ll_entry_start(struct driver, driver); + const int n_ents = ll_entry_count(struct driver, driver); + struct driver *entry; + int len; + + if (!drv || !n_ents) + return NULL; + + len = strlen(name); + + for (entry = drv; entry != drv + n_ents; entry++) { + if (strncmp(name, entry->name, len)) + continue; + + /* Full match */ + if (len == strlen(entry->name)) + return entry; + } + + /* Not found */ + return NULL; +} + +struct uclass_driver *lists_uclass_lookup(enum uclass_id id) +{ + struct uclass_driver *uclass = + ll_entry_start(struct uclass_driver, uclass); + const int n_ents = ll_entry_count(struct uclass_driver, uclass); + struct uclass_driver *entry; + + if ((id == UCLASS_INVALID) || !uclass) + return NULL; + + for (entry = uclass; entry != uclass + n_ents; entry++) { + if (entry->id == id) + return entry; + } + + return NULL; +} + +int lists_bind_drivers(struct device *parent) +{ + struct driver_info *info = + ll_entry_start(struct driver_info, driver_info); + const int n_ents = ll_entry_count(struct driver_info, driver_info); + struct driver_info *entry; + struct device *dev; + int result = 0; + int ret; + + for (entry = info; entry != info + n_ents; entry++) { + ret = device_bind_by_name(parent, entry, &dev); + if (ret) { + dm_warn("No match for driver '%s'\n", entry->name); + if (!result || ret != -ENOENT) + result = ret; + } + } + + return result; +} + +#ifdef CONFIG_OF_CONTROL +/** + * driver_check_compatible() - Check if a driver is compatible with this node + * + * @param blob: Device tree pointer + * @param offset: Offset of node in device tree + * @param of_matchL List of compatible strings to match + * @return 0 if there is a match, -ENOENT if no match, -ENODEV if the node + * does not have a compatible string, other error <0 if there is a device + * tree error + */ +static int driver_check_compatible(const void *blob, int offset, + const struct device_id *of_match) +{ + int ret; + + if (!of_match) + return -ENOENT; + + while (of_match->compatible) { + ret = fdt_node_check_compatible(blob, offset, + of_match->compatible); + if (!ret) + return 0; + else if (ret == -FDT_ERR_NOTFOUND) + return -ENODEV; + else if (ret < 0) + return -EINVAL; + of_match++; + } + + return -ENOENT; +} + +int lists_bind_fdt(struct device *parent, const void *blob, int offset) +{ + struct driver *driver = ll_entry_start(struct driver, driver); + const int n_ents = ll_entry_count(struct driver, driver); + struct driver *entry; + struct device *dev; + const char *name; + int result = 0; + int ret; + + dm_dbg("bind node %s\n", fdt_get_name(blob, offset, NULL)); + for (entry = driver; entry != driver + n_ents; entry++) { + ret = driver_check_compatible(blob, offset, entry->of_match); + if (ret == -ENOENT) { + continue; + } else if (ret == -ENODEV) { + break; + } else if (ret) { + dm_warn("Device tree error at offset %d\n", offset); + if (!result || ret != -ENOENT) + result = ret; + break; + } + + name = fdt_get_name(blob, offset, NULL); + dm_dbg(" - found match at '%s'\n", entry->name); + ret = device_bind(parent, entry, name, NULL, offset, &dev); + if (ret) { + dm_warn("No match for driver '%s'\n", entry->name); + if (!result || ret != -ENOENT) + result = ret; + } + } + + return result; +} +#endif |