int ofnode_decode_memory_region(ofnode config_node, const char *mem_type,
const char *suffix, fdt_addr_t *basep,
fdt_size_t *sizep)
{
char prop_name[50];
const char *mem;
fdt_size_t size, offset_size;
fdt_addr_t base, offset;
ofnode node;
if (!ofnode_valid(config_node)) {
config_node = ofnode_path("/config");
if (!ofnode_valid(config_node)) {
debug("%s: Cannot find /config node\n", __func__);
return -ENOENT;
}
}
if (!suffix)
suffix = "";
snprintf(prop_name, sizeof(prop_name), "%s-memory%s", mem_type,
suffix);
mem = ofnode_read_string(config_node, prop_name);
if (!mem) {
debug("%s: No memory type for '%s', using /memory\n", __func__,
prop_name);
mem = "/memory";
}
node = ofnode_path(mem);
if (!ofnode_valid(node)) {
debug("%s: Failed to find node '%s'\n", __func__, mem);
return -ENOENT;
}
/*
* Not strictly correct - the memory may have multiple banks. We just
* use the first
*/
if (ofnode_decode_region(node, "reg", &base, &size)) {
debug("%s: Failed to decode memory region %s\n", __func__,
mem);
return -EINVAL;
}
snprintf(prop_name, sizeof(prop_name), "%s-offset%s", mem_type,
suffix);
if (ofnode_decode_region(config_node, prop_name, &offset,
&offset_size)) {
debug("%s: Failed to decode memory region '%s'\n", __func__,
prop_name);
return -EINVAL;
}
*basep = base + offset;
*sizep = offset_size;
return 0;
}
struct regmap *syscon_regmap_lookup_by_phandle(struct udevice *dev,
const char *name)
{
struct udevice *syscon;
struct regmap *r;
u32 phandle;
ofnode node;
int err;
err = uclass_get_device_by_phandle(UCLASS_SYSCON, dev,
name, &syscon);
if (err) {
/* found node with "syscon" compatible, not bounded to SYSCON */
err = ofnode_read_u32(dev_ofnode(dev), name, &phandle);
if (err)
return ERR_PTR(err);
node = ofnode_get_by_phandle(phandle);
if (!ofnode_valid(node)) {
dev_dbg(dev, "unable to find syscon device\n");
return ERR_PTR(-EINVAL);
}
err = syscon_probe_by_ofnode(node, &syscon);
if (err)
return ERR_PTR(-ENODEV);
}
r = syscon_get_regmap(syscon);
if (!r) {
dev_dbg(dev, "unable to find regmap\n");
return ERR_PTR(-ENODEV);
}
return r;
}
static int fs_loader_ofdata_to_platdata(struct udevice *dev)
{
const char *fs_loader_path;
u32 phandlepart[2];
fs_loader_path = ofnode_get_chosen_prop("firmware-loader");
if (fs_loader_path) {
ofnode fs_loader_node;
fs_loader_node = ofnode_path(fs_loader_path);
if (ofnode_valid(fs_loader_node)) {
struct device_platdata *plat;
plat = dev->platdata;
if (!ofnode_read_u32_array(fs_loader_node,
"phandlepart",
phandlepart, 2)) {
plat->phandlepart.phandle = phandlepart[0];
plat->phandlepart.partition = phandlepart[1];
}
plat->mtdpart = (char *)ofnode_read_string(
fs_loader_node, "mtdpart");
plat->ubivol = (char *)ofnode_read_string(
fs_loader_node, "ubivol");
}
}
return 0;
}
/* Base test of register maps */
static int dm_test_regmap_base(struct unit_test_state *uts)
{
struct udevice *dev;
struct regmap *map;
ofnode node;
int i;
ut_assertok(uclass_get_device(UCLASS_SYSCON, 0, &dev));
map = syscon_get_regmap(dev);
ut_assertok_ptr(map);
ut_asserteq(1, map->range_count);
ut_asserteq(0x10, map->ranges[0].start);
ut_asserteq(4, map->ranges[0].size);
ut_asserteq(0x10, map_to_sysmem(regmap_get_range(map, 0)));
ut_assertok(uclass_get_device(UCLASS_SYSCON, 1, &dev));
map = syscon_get_regmap(dev);
ut_assertok_ptr(map);
ut_asserteq(4, map->range_count);
ut_asserteq(0x20, map->ranges[0].start);
for (i = 0; i < 4; i++) {
const unsigned long addr = 0x20 + 8 * i;
ut_asserteq(addr, map->ranges[i].start);
ut_asserteq(5 + i, map->ranges[i].size);
ut_asserteq(addr, map_to_sysmem(regmap_get_range(map, i)));
}
/* Check that we can't pretend a different device is a syscon */
ut_assertok(uclass_get_device(UCLASS_I2C, 0, &dev));
map = syscon_get_regmap(dev);
ut_asserteq_ptr(ERR_PTR(-ENOEXEC), map);
/* A different device can be a syscon by using Linux-compat API */
node = ofnode_path("/syscon@2");
ut_assert(ofnode_valid(node));
map = syscon_node_to_regmap(node);
ut_assertok_ptr(map);
ut_asserteq(4, map->range_count);
ut_asserteq(0x40, map->ranges[0].start);
for (i = 0; i < 4; i++) {
const unsigned long addr = 0x40 + 8 * i;
ut_asserteq(addr, map->ranges[i].start);
ut_asserteq(5 + i, map->ranges[i].size);
ut_asserteq(addr, map_to_sysmem(regmap_get_range(map, i)));
}
return 0;
}
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;
}
static int uclass_cpu_init(struct uclass *uc)
{
struct udevice *dev;
ofnode node;
int ret;
node = ofnode_path("/cpus");
if (!ofnode_valid(node))
return 0;
ret = device_bind_driver_to_node(dm_root(), "cpu_bus", "cpus", node,
&dev);
return ret;
}
int pinctrl_select_state(struct udevice *dev, const char *statename)
{
/*
* Some device which is logical like mmc.blk, do not have
* a valid ofnode.
*/
if (!ofnode_valid(dev->node))
return 0;
/*
* Try full-implemented pinctrl first.
* If it fails or is not implemented, try simple one.
*/
if (pinctrl_select_state_full(dev, statename))
return pinctrl_select_state_simple(dev);
return 0;
}
static int pmic_tps65910_bind(struct udevice *dev)
{
ofnode regulators_node;
int children;
regulators_node = dev_read_subnode(dev, "regulators");
if (!ofnode_valid(regulators_node)) {
debug("%s regulators subnode not found\n", dev->name);
return -EINVAL;
}
children = pmic_bind_children(dev, regulators_node, pmic_children_info);
if (!children)
debug("%s has no children (regulators)\n", dev->name);
return 0;
}
static int lp873x_bind(struct udevice *dev)
{
ofnode regulators_node;
int children;
regulators_node = dev_read_subnode(dev, "regulators");
if (!ofnode_valid(regulators_node)) {
debug("%s: %s regulators subnode not found!", __func__,
dev->name);
return -ENXIO;
}
children = pmic_bind_children(dev, regulators_node, pmic_children_info);
if (!children)
printf("%s: %s - no child found\n", __func__, dev->name);
/* Always return success for this device */
return 0;
}
static int s2mps11_probe(struct udevice *dev)
{
ofnode regulators_node;
int children;
regulators_node = dev_read_subnode(dev, "voltage-regulators");
if (!ofnode_valid(regulators_node)) {
debug("%s: %s regulators subnode not found!", __func__,
dev->name);
return -ENXIO;
}
debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
children = pmic_bind_children(dev, regulators_node, pmic_children_info);
if (!children)
debug("%s: %s - no child found\n", __func__, dev->name);
return 0;
}
static int stpmu1_bind(struct udevice *dev)
{
#ifndef CONFIG_SPL_BUILD
ofnode regulators_node;
int children;
regulators_node = dev_read_subnode(dev, "regulators");
if (!ofnode_valid(regulators_node)) {
dev_dbg(dev, "regulators subnode not found!");
return -ENXIO;
}
dev_dbg(dev, "found regulators subnode\n");
children = pmic_bind_children(dev, regulators_node,
stpmu1_children_info);
if (!children)
dev_dbg(dev, "no child found\n");
#endif /* CONFIG_SPL_BUILD */
return 0;
}
static int s5m8767_bind(struct udevice *dev)
{
int children;
ofnode node;
node = dev_read_subnode(dev, "regulators");
if (!ofnode_valid(node)) {
debug("%s: %s regulators subnode not found!", __func__,
dev->name);
return -ENXIO;
}
debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
children = pmic_bind_children(dev, node, pmic_children_info);
if (!children)
debug("%s: %s - no child found\n", __func__, dev->name);
/* Always return success for this device */
return 0;
}
static int max77686_bind(struct udevice *dev)
{
ofnode regulators_node;
int children;
regulators_node = dev_read_subnode(dev, "voltage-regulators");
if (!ofnode_valid(regulators_node)) {
debug("%s: %s regulators subnode not found!\n", __func__,
dev->name);
return -ENXIO;
}
debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
children = pmic_bind_children(dev, regulators_node, pmic_children_info);
if (!children)
debug("%s: %s - no child found\n", __func__, dev->name);
/* Always return success for this device */
return 0;
}
static void rk3399_force_power_on_reset(void)
{
ofnode node;
struct gpio_desc sysreset_gpio;
debug("%s: trying to force a power-on reset\n", __func__);
node = ofnode_path("/config");
if (!ofnode_valid(node)) {
debug("%s: no /config node?\n", __func__);
return;
}
if (gpio_request_by_name_nodev(node, "sysreset-gpio", 0,
&sysreset_gpio, GPIOD_IS_OUT)) {
debug("%s: could not find a /config/sysreset-gpio\n", __func__);
return;
}
dm_gpio_set_value(&sysreset_gpio, 1);
}
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;
}