/**
* We have a top-level GPIO device with no actual GPIOs. It has a child
* device for each Sunxi bank.
*/
static int gpio_sunxi_bind(struct udevice *parent)
{
struct sunxi_gpio_platdata *plat = parent->platdata;
struct sunxi_gpio_reg *ctlr;
int bank;
int ret;
/* If this is a child device, there is nothing to do here */
if (plat)
return 0;
ctlr = (struct sunxi_gpio_reg *)fdtdec_get_addr(gd->fdt_blob,
parent->of_offset, "reg");
for (bank = 0; bank < SUNXI_GPIO_BANKS; bank++) {
struct sunxi_gpio_platdata *plat;
struct udevice *dev;
plat = calloc(1, sizeof(*plat));
if (!plat)
return -ENOMEM;
plat->regs = &ctlr->gpio_bank[bank];
plat->bank_name = gpio_bank_name(bank);
plat->gpio_count = SUNXI_GPIOS_PER_BANK;
ret = device_bind(parent, parent->driver,
plat->bank_name, plat, -1, &dev);
if (ret)
return ret;
dev->of_offset = parent->of_offset;
}
return 0;
}
/**
* We have a top-level GPIO device with no actual GPIOs. It has a child
* device for each Sunxi bank.
*/
static int gpio_sunxi_bind(struct udevice *parent)
{
struct sunxi_gpio_soc_data *soc_data =
(struct sunxi_gpio_soc_data *)dev_get_driver_data(parent);
struct sunxi_gpio_platdata *plat = parent->platdata;
struct sunxi_gpio_reg *ctlr;
int bank, ret;
/* If this is a child device, there is nothing to do here */
if (plat)
return 0;
ctlr = (struct sunxi_gpio_reg *)devfdt_get_addr(parent);
for (bank = 0; bank < soc_data->no_banks; bank++) {
struct sunxi_gpio_platdata *plat;
struct udevice *dev;
plat = calloc(1, sizeof(*plat));
if (!plat)
return -ENOMEM;
plat->regs = &ctlr->gpio_bank[bank];
plat->bank_name = gpio_bank_name(soc_data->start + bank);
plat->gpio_count = SUNXI_GPIOS_PER_BANK;
ret = device_bind(parent, parent->driver,
plat->bank_name, plat, -1, &dev);
if (ret)
return ret;
dev_set_of_offset(dev, dev_of_offset(parent));
}
return 0;
}
int lists_bind_fdt(struct udevice *parent, const void *blob, int offset,
struct udevice **devp)
{
struct driver *driver = ll_entry_start(struct driver, driver);
const int n_ents = ll_entry_count(struct driver, driver);
const struct udevice_id *id;
struct driver *entry;
struct udevice *dev;
bool found = false;
const char *name;
int result = 0;
int ret = 0;
dm_dbg("bind node %s\n", fdt_get_name(blob, offset, NULL));
if (devp)
*devp = NULL;
for (entry = driver; entry != driver + n_ents; entry++) {
ret = driver_check_compatible(blob, offset, entry->of_match,
&id);
name = fdt_get_name(blob, offset, NULL);
if (ret == -ENOENT) {
continue;
} else if (ret == -ENODEV) {
dm_dbg("Device '%s' has no compatible string\n", name);
break;
} else if (ret) {
dm_warn("Device tree error at offset %d\n", offset);
result = ret;
break;
}
dm_dbg(" - found match at '%s'\n", entry->name);
ret = device_bind(parent, entry, name, NULL, offset, &dev);
if (ret) {
dm_warn("Error binding driver '%s': %d\n", entry->name,
ret);
return ret;
} else {
dev->driver_data = id->data;
found = true;
if (devp)
*devp = dev;
}
break;
}
if (!found && !result && ret != -ENODEV) {
dm_dbg("No match for node '%s'\n",
fdt_get_name(blob, offset, NULL));
}
return result;
}
static int gpio_dwapb_bind(struct udevice *dev)
{
struct gpio_dwapb_platdata *plat = dev_get_platdata(dev);
const void *blob = gd->fdt_blob;
struct udevice *subdev;
fdt_addr_t base;
int ret, node, bank = 0;
/* If this is a child device, there is nothing to do here */
if (plat)
return 0;
base = fdtdec_get_addr(blob, dev_of_offset(dev), "reg");
if (base == FDT_ADDR_T_NONE) {
debug("Can't get the GPIO register base address\n");
return -ENXIO;
}
for (node = fdt_first_subnode(blob, dev_of_offset(dev));
node > 0;
node = fdt_next_subnode(blob, node)) {
if (!fdtdec_get_bool(blob, node, "gpio-controller"))
continue;
plat = NULL;
plat = calloc(1, sizeof(*plat));
if (!plat)
return -ENOMEM;
plat->base = base;
plat->bank = bank;
plat->pins = fdtdec_get_int(blob, node, "snps,nr-gpios", 0);
plat->name = fdt_stringlist_get(blob, node, "bank-name", 0,
NULL);
if (ret)
goto err;
ret = device_bind(dev, dev->driver, plat->name,
plat, -1, &subdev);
if (ret)
goto err;
dev_set_of_offset(subdev, node);
bank++;
}
return 0;
err:
free(plat);
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;
}
/**
* We have a top-level GPIO device with no actual GPIOs. It has a child
* device for each Exynos GPIO bank.
*/
static int gpio_exynos_bind(struct udevice *parent)
{
struct exynos_gpio_platdata *plat = parent->platdata;
struct s5p_gpio_bank *bank, *base;
const void *blob = gd->fdt_blob;
int node;
/* If this is a child device, there is nothing to do here */
if (plat)
return 0;
base = (struct s5p_gpio_bank *)fdtdec_get_addr(gd->fdt_blob,
parent->of_offset, "reg");
for (node = fdt_first_subnode(blob, parent->of_offset), bank = base;
node > 0;
node = fdt_next_subnode(blob, node), bank++) {
struct exynos_gpio_platdata *plat;
struct udevice *dev;
fdt_addr_t reg;
int ret;
if (!fdtdec_get_bool(blob, node, "gpio-controller"))
continue;
plat = calloc(1, sizeof(*plat));
if (!plat)
return -ENOMEM;
reg = fdtdec_get_addr(blob, node, "reg");
if (reg != FDT_ADDR_T_NONE)
bank = (struct s5p_gpio_bank *)((ulong)base + reg);
plat->bank = bank;
plat->bank_name = fdt_get_name(blob, node, NULL);
debug("dev at %p: %s\n", bank, plat->bank_name);
ret = device_bind(parent, parent->driver,
plat->bank_name, plat, -1, &dev);
if (ret)
return ret;
dev->of_offset = node;
}
return 0;
}
int device_bind_driver(struct udevice *parent, const char *drv_name,
const char *dev_name, struct udevice **devp)
{
struct driver *drv;
int ret;
drv = lists_driver_lookup_name(drv_name);
if (!drv) {
printf("Cannot find driver '%s'\n", drv_name);
return -ENOENT;
}
ret = device_bind(parent, drv, dev_name, NULL, -1, devp);
if (ret) {
printf("Cannot create device named '%s' (err=%d)\n",
dev_name, ret);
return ret;
}
return 0;
}
int lists_bind_fdt(struct udevice *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 udevice *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;
}
