static int led_gpio_bind(struct udevice *parent)
{
struct udevice *dev;
ofnode node;
int ret;
dev_for_each_subnode(node, parent) {
struct led_uc_plat *uc_plat;
const char *label;
label = ofnode_read_string(node, "label");
if (!label) {
debug("%s: node %s has no label\n", __func__,
ofnode_get_name(node));
return -EINVAL;
}
ret = device_bind_driver_to_node(parent, "gpio_led",
ofnode_get_name(node),
node, &dev);
if (ret)
return ret;
uc_plat = dev_get_uclass_platdata(dev);
uc_plat->label = label;
}
return 0;
}
static int syscon_probe_by_ofnode(ofnode node, struct udevice **devp)
{
struct udevice *dev, *parent;
int ret;
/* found node with "syscon" compatible, not bounded to SYSCON UCLASS */
if (!ofnode_device_is_compatible(node, "syscon")) {
dev_dbg(dev, "invalid compatible for syscon device\n");
return -EINVAL;
}
/* bound to driver with same ofnode or to root if not found */
if (device_find_global_by_ofnode(node, &parent))
parent = dm_root();
/* force bound to syscon class */
ret = device_bind_driver_to_node(parent, "syscon",
ofnode_get_name(node),
node, &dev);
if (ret) {
dev_dbg(dev, "unable to bound syscon device\n");
return ret;
}
ret = device_probe(dev);
if (ret) {
dev_dbg(dev, "unable to probe syscon device\n");
return ret;
}
*devp = dev;
return 0;
}
int pmic_bind_children(struct udevice *pmic, ofnode parent,
const struct pmic_child_info *child_info)
{
const struct pmic_child_info *info;
struct driver *drv;
struct udevice *child;
const char *node_name;
int bind_count = 0;
ofnode node;
int prefix_len;
int ret;
debug("%s for '%s' at node offset: %d\n", __func__, pmic->name,
dev_of_offset(pmic));
ofnode_for_each_subnode(node, parent) {
node_name = ofnode_get_name(node);
debug("* Found child node: '%s'\n", node_name);
child = NULL;
for (info = child_info; info->prefix && info->driver; info++) {
debug(" - compatible prefix: '%s'\n", info->prefix);
prefix_len = strlen(info->prefix);
if (strncmp(info->prefix, node_name, prefix_len))
continue;
drv = lists_driver_lookup_name(info->driver);
if (!drv) {
debug(" - driver: '%s' not found!\n",
info->driver);
continue;
}
debug(" - found child driver: '%s'\n", drv->name);
ret = device_bind_with_driver_data(pmic, drv, node_name,
0, node, &child);
if (ret) {
debug(" - child binding error: %d\n", ret);
continue;
}
debug(" - bound child device: '%s'\n", child->name);
child->driver_data = trailing_strtol(node_name);
debug(" - set 'child->driver_data': %lu\n",
child->driver_data);
break;
}
if (child)
bind_count++;
else
debug(" - compatible prefix not found\n");
}
static int gpio_request_tail(int ret, ofnode node,
struct ofnode_phandle_args *args,
const char *list_name, int index,
struct gpio_desc *desc, int flags, bool add_index)
{
desc->dev = NULL;
desc->offset = 0;
desc->flags = 0;
if (ret)
goto err;
ret = uclass_get_device_by_ofnode(UCLASS_GPIO, args->node,
&desc->dev);
if (ret) {
debug("%s: uclass_get_device_by_of_offset failed\n", __func__);
goto err;
}
ret = gpio_find_and_xlate(desc, args);
if (ret) {
debug("%s: gpio_find_and_xlate failed\n", __func__);
goto err;
}
ret = dm_gpio_requestf(desc, add_index ? "%s.%s%d" : "%s.%s",
ofnode_get_name(node),
list_name, index);
if (ret) {
debug("%s: dm_gpio_requestf failed\n", __func__);
goto err;
}
ret = dm_gpio_set_dir_flags(desc, flags | desc->flags);
if (ret) {
debug("%s: dm_gpio_set_dir failed\n", __func__);
goto err;
}
return 0;
err:
debug("%s: Node '%s', property '%s', failed to request GPIO index %d: %d\n",
__func__, ofnode_get_name(node), list_name, index, ret);
return ret;
}
static int gpio_dwapb_bind(struct udevice *dev)
{
struct gpio_dwapb_platdata *plat = dev_get_platdata(dev);
struct udevice *subdev;
fdt_addr_t base;
int ret, bank = 0;
ofnode node;
/* If this is a child device, there is nothing to do here */
if (plat)
return 0;
base = dev_read_addr(dev);
if (base == FDT_ADDR_T_NONE) {
debug("Can't get the GPIO register base address\n");
return -ENXIO;
}
for (node = dev_read_first_subnode(dev); ofnode_valid(node);
node = dev_read_next_subnode(node)) {
if (!ofnode_read_bool(node, "gpio-controller"))
continue;
plat = devm_kcalloc(dev, 1, sizeof(*plat), GFP_KERNEL);
if (!plat)
return -ENOMEM;
plat->base = base;
plat->bank = bank;
plat->pins = ofnode_read_u32_default(node, "snps,nr-gpios", 0);
if (ofnode_read_string_index(node, "bank-name", 0,
&plat->name)) {
/*
* Fall back to node name. This means accessing pins
* via bank name won't work.
*/
plat->name = ofnode_get_name(node);
}
ret = device_bind(dev, dev->driver, plat->name,
plat, -1, &subdev);
if (ret)
return ret;
dev->node = node;
bank++;
}
return 0;
}
int ofnode_decode_region(ofnode node, const char *prop_name, fdt_addr_t *basep,
fdt_size_t *sizep)
{
const fdt_addr_t *cell;
int len;
debug("%s: %s: %s\n", __func__, ofnode_get_name(node), prop_name);
cell = ofnode_get_property(node, prop_name, &len);
if (!cell || (len < sizeof(fdt_addr_t) * 2)) {
debug("cell=%p, len=%d\n", cell, len);
return -1;
}
*basep = fdt_addr_to_cpu(*cell);
*sizep = fdt_size_to_cpu(cell[1]);
debug("%s: base=%08lx, size=%lx\n", __func__, (ulong)*basep,
(ulong)*sizep);
return 0;
}
int cros_ec_decode_ec_flash(struct udevice *dev, struct fdt_cros_ec *config)
{
ofnode flash_node, node;
flash_node = dev_read_subnode(dev, "flash");
if (!ofnode_valid(flash_node)) {
debug("Failed to find flash node\n");
return -1;
}
if (ofnode_read_fmap_entry(flash_node, &config->flash)) {
debug("Failed to decode flash node in chrome-ec\n");
return -1;
}
config->flash_erase_value = ofnode_read_s32_default(flash_node,
"erase-value", -1);
ofnode_for_each_subnode(node, flash_node) {
const char *name = ofnode_get_name(node);
enum ec_flash_region region;
if (0 == strcmp(name, "ro")) {
region = EC_FLASH_REGION_RO;
} else if (0 == strcmp(name, "rw")) {
region = EC_FLASH_REGION_ACTIVE;
} else if (0 == strcmp(name, "wp-ro")) {
region = EC_FLASH_REGION_WP_RO;
} else {
debug("Unknown EC flash region name '%s'\n", name);
return -1;
}
if (ofnode_read_fmap_entry(node, &config->region[region])) {
debug("Failed to decode flash region in chrome-ec'\n");
return -1;
}
}
return 0;
}
/**
* pinconfig_post_bind() - post binding for PINCONFIG uclass
* Recursively bind its children as pinconfig devices.
*
* @dev: pinconfig device
* @return: 0 on success, or negative error code on failure
*/
static int pinconfig_post_bind(struct udevice *dev)
{
bool pre_reloc_only = !(gd->flags & GD_FLG_RELOC);
const char *name;
ofnode node;
int ret;
if (!dev_of_valid(dev))
return 0;
dev_for_each_subnode(node, dev) {
if (pre_reloc_only &&
!ofnode_pre_reloc(node))
continue;
/*
* If this node has "compatible" property, this is not
* a pin configuration node, but a normal device. skip.
*/
ofnode_get_property(node, "compatible", &ret);
if (ret >= 0)
continue;
/* If this node has "gpio-controller" property, skip */
if (ofnode_read_bool(node, "gpio-controller"))
continue;
if (ret != -FDT_ERR_NOTFOUND)
return ret;
name = ofnode_get_name(node);
if (!name)
return -EINVAL;
ret = device_bind_driver_to_node(dev, "pinconfig", name,
node, NULL);
if (ret)
return ret;
}
return 0;
}
int ofnode_read_fmap_entry(ofnode node, struct fmap_entry *entry)
{
const char *prop;
u32 reg[2];
if (ofnode_read_u32_array(node, "reg", reg, 2)) {
debug("Node '%s' has bad/missing 'reg' property\n",
ofnode_get_name(node));
return -log_ret(ENOENT);
}
entry->offset = reg[0];
entry->length = reg[1];
entry->used = ofnode_read_s32_default(node, "used", entry->length);
prop = ofnode_read_string(node, "compress");
entry->compress_algo = prop && !strcmp(prop, "lzo") ?
FMAP_COMPRESS_LZO : FMAP_COMPRESS_NONE;
prop = ofnode_read_string(node, "hash");
if (prop)
entry->hash_size = strlen(prop);
entry->hash_algo = prop ? FMAP_HASH_SHA256 : FMAP_HASH_NONE;
entry->hash = (uint8_t *)prop;
return 0;
}
static int stm32_fmc_ofdata_to_platdata(struct udevice *dev)
{
struct stm32_sdram_params *params = dev_get_platdata(dev);
struct bank_params *bank_params;
struct ofnode_phandle_args args;
u32 *syscfg_base;
u32 mem_remap;
u32 swp_fmc;
ofnode bank_node;
char *bank_name;
u8 bank = 0;
int ret;
ret = dev_read_phandle_with_args(dev, "st,syscfg", NULL, 0, 0,
&args);
if (ret) {
dev_dbg(dev, "%s: can't find syscon device (%d)\n", __func__, ret);
} else {
syscfg_base = (u32 *)ofnode_get_addr(args.node);
mem_remap = dev_read_u32_default(dev, "st,mem_remap", NOT_FOUND);
if (mem_remap != NOT_FOUND) {
/* set memory mapping selection */
clrsetbits_le32(syscfg_base, MEM_MODE_MASK, mem_remap);
} else {
dev_dbg(dev, "%s: cannot find st,mem_remap property\n", __func__);
}
swp_fmc = dev_read_u32_default(dev, "st,swp_fmc", NOT_FOUND);
if (swp_fmc != NOT_FOUND) {
/* set fmc swapping selection */
clrsetbits_le32(syscfg_base, SWP_FMC_MASK, swp_fmc << SWP_FMC_OFFSET);
} else {
dev_dbg(dev, "%s: cannot find st,swp_fmc property\n", __func__);
}
dev_dbg(dev, "syscfg %x = %x\n", (u32)syscfg_base, *syscfg_base);
}
dev_for_each_subnode(bank_node, dev) {
/* extract the bank index from DT */
bank_name = (char *)ofnode_get_name(bank_node);
strsep(&bank_name, "@");
if (!bank_name) {
pr_err("missing sdram bank index");
return -EINVAL;
}
bank_params = ¶ms->bank_params[bank];
strict_strtoul(bank_name, 10,
(long unsigned int *)&bank_params->target_bank);
if (bank_params->target_bank >= MAX_SDRAM_BANK) {
pr_err("Found bank %d , but only bank 0 and 1 are supported",
bank_params->target_bank);
return -EINVAL;
}
debug("Find bank %s %u\n", bank_name, bank_params->target_bank);
params->bank_params[bank].sdram_control =
(struct stm32_sdram_control *)
ofnode_read_u8_array_ptr(bank_node,
"st,sdram-control",
sizeof(struct stm32_sdram_control));
if (!params->bank_params[bank].sdram_control) {
pr_err("st,sdram-control not found for %s",
ofnode_get_name(bank_node));
return -EINVAL;
}
params->bank_params[bank].sdram_timing =
(struct stm32_sdram_timing *)
ofnode_read_u8_array_ptr(bank_node,
"st,sdram-timing",
sizeof(struct stm32_sdram_timing));
if (!params->bank_params[bank].sdram_timing) {
pr_err("st,sdram-timing not found for %s",
ofnode_get_name(bank_node));
return -EINVAL;
}
bank_params->sdram_ref_count = ofnode_read_u32_default(bank_node,
"st,sdram-refcount", 8196);
bank++;
}
const char *dev_read_name(struct udevice *dev)
{
return ofnode_get_name(dev_ofnode(dev));
}
