static struct tps51632_regulator_platform_data *
of_get_tps51632_platform_data(struct device *dev)
{
struct tps51632_regulator_platform_data *pdata;
struct device_node *np = dev->of_node;
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata) {
dev_err(dev, "Memory alloc failed for platform data\n");
return NULL;
}
pdata->reg_init_data = of_get_regulator_init_data(dev, dev->of_node);
if (!pdata->reg_init_data) {
dev_err(dev, "Not able to get OF regulator init data\n");
return NULL;
}
pdata->enable_pwm_dvfs =
of_property_read_bool(np, "ti,enable-pwm-dvfs");
pdata->dvfs_step_20mV = of_property_read_bool(np, "ti,dvfs-step-20mV");
pdata->base_voltage_uV = pdata->reg_init_data->constraints.min_uV ? :
TPS51632_MIN_VOLATGE;
pdata->max_voltage_uV = pdata->reg_init_data->constraints.max_uV ? :
TPS51632_MAX_VOLATGE;
return pdata;
}
static int arizona_micsupp_of_get_pdata(struct arizona *arizona,
struct regulator_config *config)
{
struct arizona_pdata *pdata = &arizona->pdata;
struct arizona_micsupp *micsupp = config->driver_data;
struct device_node *np;
struct regulator_init_data *init_data;
np = of_get_child_by_name(arizona->dev->of_node, "micvdd");
if (np) {
config->of_node = np;
init_data = of_get_regulator_init_data(arizona->dev, np);
if (init_data) {
init_data->consumer_supplies = &micsupp->supply;
init_data->num_consumer_supplies = 1;
pdata->micvdd = init_data;
}
}
return 0;
}
static int arizona_ldo1_of_get_pdata(struct arizona *arizona,
struct regulator_config *config)
{
struct arizona_pdata *pdata = &arizona->pdata;
struct arizona_ldo1 *ldo1 = config->driver_data;
struct device_node *init_node, *dcvdd_node;
struct regulator_init_data *init_data;
pdata->ldoena = arizona_of_get_named_gpio(arizona, "wlf,ldoena", true);
init_node = of_get_child_by_name(arizona->dev->of_node, "ldo1");
dcvdd_node = of_parse_phandle(arizona->dev->of_node, "DCVDD-supply", 0);
if (init_node) {
config->of_node = init_node;
init_data = of_get_regulator_init_data(arizona->dev, init_node);
if (init_data) {
init_data->consumer_supplies = &ldo1->supply;
init_data->num_consumer_supplies = 1;
if (dcvdd_node && dcvdd_node != init_node)
arizona->external_dcvdd = true;
pdata->ldo1 = init_data;
}
} else if (dcvdd_node) {
arizona->external_dcvdd = true;
}
of_node_put(dcvdd_node);
return 0;
}
static int stw481x_vmmc_regulator_probe(struct platform_device *pdev)
{
struct stw481x *stw481x = dev_get_platdata(&pdev->dev);
struct regulator_config config = { };
int ret;
/* First disable the external VMMC if it's active */
ret = regmap_update_bits(stw481x->map, STW_CONF2,
STW_CONF2_VMMC_EXT, 0);
if (ret) {
dev_err(&pdev->dev, "could not disable external VMMC\n");
return ret;
}
/* Register VMMC regulator */
config.dev = &pdev->dev;
config.driver_data = stw481x;
config.regmap = stw481x->map;
config.of_node = pdev->dev.of_node;
config.init_data = of_get_regulator_init_data(&pdev->dev,
pdev->dev.of_node);
stw481x->vmmc_regulator = regulator_register(&vmmc_regulator, &config);
if (IS_ERR(stw481x->vmmc_regulator)) {
dev_err(&pdev->dev,
"error initializing STw481x VMMC regulator\n");
return PTR_ERR(stw481x->vmmc_regulator);
}
dev_info(&pdev->dev, "initialized STw481x VMMC regulator\n");
return 0;
}
static int pm8607_regulator_dt_init(struct platform_device *pdev,
struct pm8607_regulator_info *info,
struct regulator_config *config)
{
struct device_node *nproot, *np;
nproot = pdev->dev.parent->of_node;
if (!nproot)
return -ENODEV;
nproot = of_get_child_by_name(nproot, "regulators");
if (!nproot) {
dev_err(&pdev->dev, "failed to find regulators node\n");
return -ENODEV;
}
for_each_child_of_node(nproot, np) {
if (!of_node_cmp(np->name, info->desc.name)) {
config->init_data =
of_get_regulator_init_data(&pdev->dev, np,
&info->desc);
config->of_node = np;
break;
}
}
of_node_put(nproot);
return 0;
}
static int arizona_ldo1_of_get_pdata(struct arizona_ldo1_pdata *pdata,
struct regulator_config *config,
const struct regulator_desc *desc,
bool *external_dcvdd)
{
struct arizona_ldo1 *ldo1 = config->driver_data;
struct device_node *np = config->dev->of_node;
struct device_node *init_node, *dcvdd_node;
struct regulator_init_data *init_data;
init_node = of_get_child_by_name(np, "ldo1");
dcvdd_node = of_parse_phandle(np, "DCVDD-supply", 0);
if (init_node) {
config->of_node = init_node;
init_data = of_get_regulator_init_data(config->dev, init_node,
desc);
if (init_data) {
init_data->consumer_supplies = &ldo1->supply;
init_data->num_consumer_supplies = 1;
if (dcvdd_node && dcvdd_node != init_node)
*external_dcvdd = true;
pdata->init_data = init_data;
}
} else if (dcvdd_node) {
*external_dcvdd = true;
}
of_node_put(dcvdd_node);
return 0;
}
/**
* of_regulator_match - extract multiple regulator init data from device tree.
* @dev: device requesting the data
* @node: parent device node of the regulators
* @matches: match table for the regulators
* @num_matches: number of entries in match table
*
* This function uses a match table specified by the regulator driver to
* parse regulator init data from the device tree. @node is expected to
* contain a set of child nodes, each providing the init data for one
* regulator. The data parsed from a child node will be matched to a regulator
* based on either the deprecated property regulator-compatible if present,
* or otherwise the child node's name. Note that the match table is modified
* in place and an additional of_node reference is taken for each matched
* regulator.
*
* Returns the number of matches found or a negative error code on failure.
*/
int of_regulator_match(struct device *dev, struct device_node *node,
struct of_regulator_match *matches,
unsigned int num_matches)
{
unsigned int count = 0;
unsigned int i;
const char *name;
struct device_node *child;
struct devm_of_regulator_matches *devm_matches;
if (!dev || !node)
return -EINVAL;
devm_matches = devres_alloc(devm_of_regulator_put_matches,
sizeof(struct devm_of_regulator_matches),
GFP_KERNEL);
if (!devm_matches)
return -ENOMEM;
devm_matches->matches = matches;
devm_matches->num_matches = num_matches;
devres_add(dev, devm_matches);
for (i = 0; i < num_matches; i++) {
struct of_regulator_match *match = &matches[i];
match->init_data = NULL;
match->of_node = NULL;
}
for_each_child_of_node(node, child) {
name = of_get_property(child,
"regulator-compatible", NULL);
if (!name)
name = child->name;
for (i = 0; i < num_matches; i++) {
struct of_regulator_match *match = &matches[i];
if (match->of_node)
continue;
if (strcmp(match->name, name))
continue;
match->init_data =
of_get_regulator_init_data(dev, child,
match->desc);
if (!match->init_data) {
dev_err(dev,
"failed to parse DT for regulator %pOFn\n",
child);
of_node_put(child);
return -EINVAL;
}
match->of_node = of_node_get(child);
count++;
break;
}
}
/**
* of_get_fixed_voltage_config - extract fixed_voltage_config structure info
* @dev: device requesting for fixed_voltage_config
*
* Populates fixed_voltage_config structure by extracting data from device
* tree node, returns a pointer to the populated structure of NULL if memory
* alloc fails.
*/
static struct fixed_voltage_config *
of_get_fixed_voltage_config(struct device *dev)
{
struct fixed_voltage_config *config;
struct device_node *np = dev->of_node;
const __be32 *delay;
struct regulator_init_data *init_data;
config = devm_kzalloc(dev, sizeof(struct fixed_voltage_config),
GFP_KERNEL);
if (!config)
return ERR_PTR(-ENOMEM);
config->init_data = of_get_regulator_init_data(dev, dev->of_node);
if (!config->init_data)
return ERR_PTR(-EINVAL);
init_data = config->init_data;
init_data->constraints.apply_uV = 0;
config->supply_name = init_data->constraints.name;
if (init_data->constraints.min_uV == init_data->constraints.max_uV) {
config->microvolts = init_data->constraints.min_uV;
} else {
dev_err(dev,
"Fixed regulator specified with variable voltages\n");
return ERR_PTR(-EINVAL);
}
if (init_data->constraints.boot_on)
config->enabled_at_boot = true;
config->gpio = of_get_named_gpio(np, "gpio", 0);
/*
* of_get_named_gpio() currently returns ENODEV rather than
* EPROBE_DEFER. This code attempts to be compatible with both
* for now; the ENODEV check can be removed once the API is fixed.
* of_get_named_gpio() doesn't differentiate between a missing
* property (which would be fine here, since the GPIO is optional)
* and some other error. Patches have been posted for both issues.
* Once they are check in, we should replace this with:
* if (config->gpio < 0 && config->gpio != -ENOENT)
*/
if ((config->gpio == -ENODEV) || (config->gpio == -EPROBE_DEFER))
return ERR_PTR(-EPROBE_DEFER);
delay = of_get_property(np, "startup-delay-us", NULL);
if (delay)
config->startup_delay = be32_to_cpu(*delay);
if (of_find_property(np, "enable-active-high", NULL))
config->enable_high = true;
if (of_find_property(np, "parent-supply", NULL))
init_data->supply_regulator = "parent";
return config;
}
static int s2mps13_pmic_dt_parse_pdata(struct sec_pmic_dev *iodev,
struct sec_platform_data *pdata)
{
struct device_node *pmic_np, *regulators_np, *reg_np;
struct sec_regulator_data *rdata;
unsigned int i;
pmic_np = iodev->dev->of_node;
if (!pmic_np) {
dev_err(iodev->dev, "could not find pmic sub-node\n");
return -ENODEV;
}
regulators_np = of_find_node_by_name(pmic_np, "regulators");
if (!regulators_np) {
dev_err(iodev->dev, "could not find regulators sub-node\n");
return -EINVAL;
}
/* count the number of regulators to be supported in pmic */
pdata->num_regulators = 0;
for_each_child_of_node(regulators_np, reg_np) {
pdata->num_regulators++;
}
rdata = devm_kzalloc(iodev->dev, sizeof(*rdata) *
pdata->num_regulators, GFP_KERNEL);
if (!rdata) {
dev_err(iodev->dev,
"could not allocate memory for regulator data\n");
return -ENOMEM;
}
pdata->regulators = rdata;
s2mps13_desc_type = iodev->rev_num ? S2MPS13_DESC_TYPE1 : S2MPS13_DESC_TYPE0;
for_each_child_of_node(regulators_np, reg_np) {
for (i = 0; i < ARRAY_SIZE(regulators[s2mps13_desc_type]); i++)
if (!of_node_cmp(reg_np->name,
regulators[s2mps13_desc_type][i].name))
break;
if (i == ARRAY_SIZE(regulators[s2mps13_desc_type])) {
dev_warn(iodev->dev,
"don't know how to configure regulator %s\n",
reg_np->name);
continue;
}
rdata->id = i;
rdata->initdata = of_get_regulator_init_data(
iodev->dev, reg_np);
rdata->reg_node = reg_np;
rdata++;
}
return 0;
}
static int mem_acc_regulator_probe(struct platform_device *pdev)
{
struct mem_acc_regulator *mem_acc_vreg;
struct regulator_desc *rdesc;
struct regulator_init_data *init_data;
int rc;
if (!pdev->dev.of_node) {
pr_err("Device tree node is missing\n");
return -EINVAL;
}
init_data = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node);
if (!init_data) {
pr_err("regulator init data is missing\n");
return -EINVAL;
} else {
init_data->constraints.input_uV
= init_data->constraints.max_uV;
init_data->constraints.valid_ops_mask
|= REGULATOR_CHANGE_VOLTAGE;
}
mem_acc_vreg = devm_kzalloc(&pdev->dev, sizeof(*mem_acc_vreg),
GFP_KERNEL);
if (!mem_acc_vreg) {
pr_err("Can't allocate mem_acc_vreg memory\n");
return -ENOMEM;
}
mem_acc_vreg->dev = &pdev->dev;
rc = mem_acc_init(pdev, mem_acc_vreg);
if (rc) {
pr_err("Unable to initialize mem_acc configuration rc=%d\n",
rc);
return rc;
}
rdesc = &mem_acc_vreg->rdesc;
rdesc->owner = THIS_MODULE;
rdesc->type = REGULATOR_VOLTAGE;
rdesc->ops = &mem_acc_corner_ops;
rdesc->name = init_data->constraints.name;
mem_acc_vreg->rdev = regulator_register(rdesc, &pdev->dev,
init_data, mem_acc_vreg, pdev->dev.of_node);
if (IS_ERR(mem_acc_vreg->rdev)) {
rc = PTR_ERR(mem_acc_vreg->rdev);
if (rc != -EPROBE_DEFER)
pr_err("regulator_register failed: rc=%d\n", rc);
return rc;
}
platform_set_drvdata(pdev, mem_acc_vreg);
return 0;
}
static int pwm_regulator_probe(struct platform_device *pdev)
{
const struct regulator_init_data *init_data;
struct pwm_regulator_data *drvdata;
struct regulator_dev *regulator;
struct regulator_config config = { };
struct device_node *np = pdev->dev.of_node;
int ret;
if (!np) {
dev_err(&pdev->dev, "Device Tree node missing\n");
return -EINVAL;
}
drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
if (!drvdata)
return -ENOMEM;
if (of_find_property(np, "voltage-table", NULL))
ret = pwm_regulator_init_table(pdev, drvdata);
else
ret = pwm_regulator_init_continuous(pdev, drvdata);
if (ret)
return ret;
init_data = of_get_regulator_init_data(&pdev->dev, np,
&pwm_regulator_desc);
if (!init_data)
return -ENOMEM;
config.of_node = np;
config.dev = &pdev->dev;
config.driver_data = drvdata;
config.init_data = init_data;
drvdata->pwm = devm_pwm_get(&pdev->dev, NULL);
if (IS_ERR(drvdata->pwm)) {
dev_err(&pdev->dev, "Failed to get PWM\n");
return PTR_ERR(drvdata->pwm);
}
regulator = devm_regulator_register(&pdev->dev,
&pwm_regulator_desc, &config);
if (IS_ERR(regulator)) {
dev_err(&pdev->dev, "Failed to register regulator %s\n",
pwm_regulator_desc.name);
return PTR_ERR(regulator);
}
return 0;
}
struct mc13xxx_regulator_init_data *mc13xxx_parse_regulators_dt(
struct platform_device *pdev, struct mc13xxx_regulator *regulators,
int num_regulators)
{
struct mc13xxx_regulator_priv *priv = platform_get_drvdata(pdev);
struct mc13xxx_regulator_init_data *data, *p;
struct device_node *parent, *child;
int i, parsed = 0;
if (!pdev->dev.parent->of_node)
return NULL;
parent = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
if (!parent)
return NULL;
data = devm_kzalloc(&pdev->dev, sizeof(*data) * priv->num_regulators,
GFP_KERNEL);
if (!data) {
of_node_put(parent);
return NULL;
}
p = data;
for_each_child_of_node(parent, child) {
int found = 0;
for (i = 0; i < num_regulators; i++) {
if (!regulators[i].desc.name)
continue;
if (!of_node_cmp(child->name,
regulators[i].desc.name)) {
p->id = i;
p->init_data = of_get_regulator_init_data(
&pdev->dev, child,
®ulators[i].desc);
p->node = child;
p++;
parsed++;
found = 1;
break;
}
}
if (!found)
dev_warn(&pdev->dev,
"Unknown regulator: %s\n", child->name);
}
static int stm32_vrefbuf_probe(struct platform_device *pdev)
{
struct resource *res;
struct stm32_vrefbuf *priv;
struct regulator_config config = { };
struct regulator_dev *rdev;
int ret;
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
priv->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(priv->base))
return PTR_ERR(priv->base);
priv->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(priv->clk))
return PTR_ERR(priv->clk);
ret = clk_prepare_enable(priv->clk);
if (ret) {
dev_err(&pdev->dev, "clk prepare failed with error %d\n", ret);
return ret;
}
config.dev = &pdev->dev;
config.driver_data = priv;
config.of_node = pdev->dev.of_node;
config.init_data = of_get_regulator_init_data(&pdev->dev,
pdev->dev.of_node,
&stm32_vrefbuf_regu);
rdev = regulator_register(&stm32_vrefbuf_regu, &config);
if (IS_ERR(rdev)) {
ret = PTR_ERR(rdev);
dev_err(&pdev->dev, "register failed with error %d\n", ret);
goto err_clk_dis;
}
platform_set_drvdata(pdev, rdev);
return 0;
err_clk_dis:
clk_disable_unprepare(priv->clk);
return ret;
}
static struct max8952_platform_data *max8952_parse_dt(struct device *dev)
{
struct max8952_platform_data *pd;
struct device_node *np = dev->of_node;
int ret;
int i;
pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
if (!pd)
return NULL;
pd->gpio_vid0 = of_get_named_gpio(np, "max8952,vid-gpios", 0);
pd->gpio_vid1 = of_get_named_gpio(np, "max8952,vid-gpios", 1);
pd->gpio_en = of_get_named_gpio(np, "max8952,en-gpio", 0);
if (of_property_read_u32(np, "max8952,default-mode", &pd->default_mode))
dev_warn(dev, "Default mode not specified, assuming 0\n");
ret = of_property_read_u32_array(np, "max8952,dvs-mode-microvolt",
pd->dvs_mode, ARRAY_SIZE(pd->dvs_mode));
if (ret) {
dev_err(dev, "max8952,dvs-mode-microvolt property not specified");
return NULL;
}
for (i = 0; i < ARRAY_SIZE(pd->dvs_mode); ++i) {
if (pd->dvs_mode[i] < 770000 || pd->dvs_mode[i] > 1400000) {
dev_err(dev, "DVS voltage %d out of range\n", i);
return NULL;
}
pd->dvs_mode[i] = (pd->dvs_mode[i] - 770000) / 10000;
}
if (of_property_read_u32(np, "max8952,sync-freq", &pd->sync_freq))
dev_warn(dev, "max8952,sync-freq property not specified, defaulting to 26MHz\n");
if (of_property_read_u32(np, "max8952,ramp-speed", &pd->ramp_speed))
dev_warn(dev, "max8952,ramp-speed property not specified, defaulting to 32mV/us\n");
pd->reg_data = of_get_regulator_init_data(dev, np, ®ulator);
if (!pd->reg_data) {
dev_err(dev, "Failed to parse regulator init data\n");
return NULL;
}
return pd;
}
static int arizona_ldo1_of_get_pdata(struct arizona *arizona,
struct regulator_config *config,
const struct regulator_desc *desc)
{
struct arizona_pdata *pdata = &arizona->pdata;
struct arizona_ldo1 *ldo1 = config->driver_data;
struct device_node *np = arizona->dev->of_node;
struct device_node *init_node, *dcvdd_node;
struct regulator_init_data *init_data;
pdata->ldoena = of_get_named_gpio(np, "wlf,ldoena", 0);
if (pdata->ldoena < 0) {
dev_warn(arizona->dev,
"LDOENA GPIO property missing/malformed: %d\n",
pdata->ldoena);
pdata->ldoena = 0;
} else {
config->ena_gpio_initialized = true;
}
init_node = of_get_child_by_name(np, "ldo1");
dcvdd_node = of_parse_phandle(np, "DCVDD-supply", 0);
if (init_node) {
config->of_node = init_node;
init_data = of_get_regulator_init_data(arizona->dev, init_node,
desc);
if (init_data) {
init_data->consumer_supplies = &ldo1->supply;
init_data->num_consumer_supplies = 1;
if (dcvdd_node && dcvdd_node != init_node)
arizona->external_dcvdd = true;
pdata->ldo1 = init_data;
}
} else if (dcvdd_node) {
arizona->external_dcvdd = true;
}
of_node_put(dcvdd_node);
return 0;
}
/**
* of_get_fixed_voltage_config - extract fixed_voltage_config structure info
* @dev: device requesting for fixed_voltage_config
*
* Populates fixed_voltage_config structure by extracting data from device
* tree node, returns a pointer to the populated structure of NULL if memory
* alloc fails.
*/
static struct fixed_voltage_config *
of_get_fixed_voltage_config(struct device *dev)
{
struct fixed_voltage_config *config;
struct device_node *np = dev->of_node;
const __be32 *delay;
struct regulator_init_data *init_data;
config = devm_kzalloc(dev, sizeof(struct fixed_voltage_config),
GFP_KERNEL);
if (!config)
return NULL;
config->init_data = of_get_regulator_init_data(dev, dev->of_node);
if (!config->init_data)
return NULL;
init_data = config->init_data;
init_data->constraints.apply_uV = 0;
config->supply_name = init_data->constraints.name;
if (init_data->constraints.min_uV == init_data->constraints.max_uV) {
config->microvolts = init_data->constraints.min_uV;
} else {
dev_err(dev,
"Fixed regulator specified with variable voltages\n");
return NULL;
}
if (init_data->constraints.boot_on)
config->enabled_at_boot = true;
config->gpio = of_get_named_gpio(np, "gpio", 0);
delay = of_get_property(np, "startup-delay-us", NULL);
if (delay)
config->startup_delay = be32_to_cpu(*delay);
if (of_find_property(np, "enable-active-high", NULL))
config->enable_high = true;
return config;
}
static struct fan53555_platform_data *fan53555_parse_dt(struct device *dev,
struct device_node *np,
const struct regulator_desc *desc)
{
struct fan53555_platform_data *pdata;
int ret;
u32 tmp;
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return NULL;
pdata->regulator = of_get_regulator_init_data(dev, np, desc);
ret = of_property_read_u32(np, "fcs,suspend-voltage-selector",
&tmp);
if (!ret)
pdata->sleep_vsel_id = tmp;
return pdata;
}
static struct fan53555_platform_data *
fan53555_get_of_platform_data(struct i2c_client *client)
{
struct fan53555_platform_data *pdata = NULL;
struct regulator_init_data *init_data;
u32 sleep_sel;
init_data = of_get_regulator_init_data(&client->dev,
client->dev.of_node);
if (!init_data) {
dev_err(&client->dev, "regulator init data is missing\n");
return pdata;
}
if (fan53555_parse_backup_reg(client, &sleep_sel))
return pdata;
pdata = devm_kzalloc(&client->dev,
sizeof(struct fan53555_platform_data), GFP_KERNEL);
if (!pdata) {
dev_err(&client->dev,
"fan53555_platform_data allocation failed.\n");
return pdata;
}
init_data->constraints.input_uV = init_data->constraints.max_uV;
init_data->constraints.valid_ops_mask |=
REGULATOR_CHANGE_STATUS | REGULATOR_CHANGE_VOLTAGE |
REGULATOR_CHANGE_MODE;
init_data->constraints.valid_modes_mask =
REGULATOR_MODE_NORMAL |
REGULATOR_MODE_FAST;
init_data->constraints.initial_mode = REGULATOR_MODE_NORMAL;
pdata->regulator = init_data;
pdata->sleep_vsel_id = sleep_sel;
return pdata;
}
static int smb349_regulator_init(struct smb349_charger *chip)
{
int rc = 0;
struct regulator_init_data *init_data;
struct regulator_config cfg = {};
init_data = of_get_regulator_init_data(chip->dev, chip->dev->of_node);
if (!init_data) {
dev_err(chip->dev, "Unable to allocate memory\n");
return -ENOMEM;
}
if (init_data->constraints.name) {
chip->otg_vreg.rdesc.owner = THIS_MODULE;
chip->otg_vreg.rdesc.type = REGULATOR_VOLTAGE;
chip->otg_vreg.rdesc.ops = &smb349_chg_otg_reg_ops;
chip->otg_vreg.rdesc.name = init_data->constraints.name;
cfg.dev = chip->dev;
cfg.init_data = init_data;
cfg.driver_data = chip;
cfg.of_node = chip->dev->of_node;
init_data->constraints.valid_ops_mask
|= REGULATOR_CHANGE_STATUS;
chip->otg_vreg.rdev = regulator_register(
&chip->otg_vreg.rdesc, &cfg);
if (IS_ERR(chip->otg_vreg.rdev)) {
rc = PTR_ERR(chip->otg_vreg.rdev);
chip->otg_vreg.rdev = NULL;
if (rc != -EPROBE_DEFER)
dev_err(chip->dev,
"OTG reg failed, rc=%d\n", rc);
}
}
return rc;
}
struct mc13xxx_regulator_init_data * __devinit mc13xxx_parse_regulators_dt(
struct platform_device *pdev, struct mc13xxx_regulator *regulators,
int num_regulators)
{
struct mc13xxx_regulator_priv *priv = platform_get_drvdata(pdev);
struct mc13xxx_regulator_init_data *data, *p;
struct device_node *parent, *child;
int i;
of_node_get(pdev->dev.parent->of_node);
parent = of_find_node_by_name(pdev->dev.parent->of_node, "regulators");
if (!parent)
return NULL;
data = devm_kzalloc(&pdev->dev, sizeof(*data) * priv->num_regulators,
GFP_KERNEL);
if (!data)
return NULL;
p = data;
for_each_child_of_node(parent, child) {
for (i = 0; i < num_regulators; i++) {
if (!of_node_cmp(child->name,
regulators[i].desc.name)) {
p->id = i;
p->init_data = of_get_regulator_init_data(
&pdev->dev, child);
p->node = child;
p++;
break;
}
}
}
return data;
}
static int __devinit anatop_regulator_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
struct regulator_desc *rdesc;
struct regulator_dev *rdev;
struct anatop_regulator *sreg;
struct regulator_init_data *initdata;
struct anatop *anatopmfd = dev_get_drvdata(pdev->dev.parent);
int ret = 0;
initdata = of_get_regulator_init_data(dev, np);
sreg = devm_kzalloc(dev, sizeof(*sreg), GFP_KERNEL);
if (!sreg)
return -ENOMEM;
sreg->initdata = initdata;
sreg->name = kstrdup(of_get_property(np, "regulator-name", NULL),
GFP_KERNEL);
rdesc = &sreg->rdesc;
memset(rdesc, 0, sizeof(*rdesc));
rdesc->name = sreg->name;
rdesc->ops = &anatop_rops;
rdesc->type = REGULATOR_VOLTAGE;
rdesc->owner = THIS_MODULE;
sreg->mfd = anatopmfd;
ret = of_property_read_u32(np, "anatop-reg-offset",
&sreg->control_reg);
if (ret) {
dev_err(dev, "no anatop-reg-offset property set\n");
goto anatop_probe_end;
}
ret = of_property_read_u32(np, "anatop-vol-bit-width",
&sreg->vol_bit_width);
if (ret) {
dev_err(dev, "no anatop-vol-bit-width property set\n");
goto anatop_probe_end;
}
ret = of_property_read_u32(np, "anatop-vol-bit-shift",
&sreg->vol_bit_shift);
if (ret) {
dev_err(dev, "no anatop-vol-bit-shift property set\n");
goto anatop_probe_end;
}
ret = of_property_read_u32(np, "anatop-min-bit-val",
&sreg->min_bit_val);
if (ret) {
dev_err(dev, "no anatop-min-bit-val property set\n");
goto anatop_probe_end;
}
ret = of_property_read_u32(np, "anatop-min-voltage",
&sreg->min_voltage);
if (ret) {
dev_err(dev, "no anatop-min-voltage property set\n");
goto anatop_probe_end;
}
ret = of_property_read_u32(np, "anatop-max-voltage",
&sreg->max_voltage);
if (ret) {
dev_err(dev, "no anatop-max-voltage property set\n");
goto anatop_probe_end;
}
rdesc->n_voltages = (sreg->max_voltage - sreg->min_voltage)
/ 25000 + 1;
rdev = regulator_register(rdesc, dev,
initdata, sreg, pdev->dev.of_node);
if (IS_ERR(rdev)) {
dev_err(dev, "failed to register %s\n",
rdesc->name);
ret = PTR_ERR(rdev);
goto anatop_probe_end;
}
platform_set_drvdata(pdev, rdev);
anatop_probe_end:
if (ret)
kfree(sreg->name);
return ret;
}
static int regulator_stub_probe(struct platform_device *pdev)
{
struct regulator_config reg_config = {};
struct regulator_init_data *init_data = NULL;
struct device *dev = &pdev->dev;
struct stub_regulator_pdata *vreg_pdata;
struct regulator_desc *rdesc;
struct regulator_stub *vreg_priv;
int rc;
vreg_priv = kzalloc(sizeof(*vreg_priv), GFP_KERNEL);
if (!vreg_priv) {
dev_err(dev, "%s: Unable to allocate memory\n",
__func__);
return -ENOMEM;
}
if (dev->of_node) {
/* Use device tree. */
init_data = of_get_regulator_init_data(dev,
dev->of_node);
if (!init_data) {
dev_err(dev, "%s: unable to allocate memory\n",
__func__);
rc = -ENOMEM;
goto err_probe;
}
if (init_data->constraints.name == NULL) {
dev_err(dev, "%s: regulator name not specified\n",
__func__);
rc = -EINVAL;
goto err_probe;
}
if (of_get_property(dev->of_node, "parent-supply", NULL))
init_data->supply_regulator = "parent";
of_property_read_u32(dev->of_node, "qcom,system-load",
&vreg_priv->system_uA);
of_property_read_u32(dev->of_node, "qcom,hpm-min-load",
&vreg_priv->hpm_min_load);
init_data->constraints.input_uV = init_data->constraints.max_uV;
init_data->constraints.valid_ops_mask
|= REGULATOR_CHANGE_STATUS;
init_data->constraints.valid_ops_mask
|= REGULATOR_CHANGE_VOLTAGE;
init_data->constraints.valid_ops_mask
|= REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_DRMS;
init_data->constraints.valid_modes_mask
= REGULATOR_MODE_NORMAL | REGULATOR_MODE_IDLE;
} else {
/* Use platform data. */
vreg_pdata = dev->platform_data;
if (!vreg_pdata) {
dev_err(dev, "%s: no platform data\n", __func__);
rc = -EINVAL;
goto err_probe;
}
init_data = &vreg_pdata->init_data;
vreg_priv->system_uA = vreg_pdata->system_uA;
vreg_priv->hpm_min_load = vreg_pdata->hpm_min_load;
}
dev_set_drvdata(dev, vreg_priv);
rdesc = &vreg_priv->rdesc;
strlcpy(vreg_priv->name, init_data->constraints.name,
STUB_REGULATOR_MAX_NAME);
rdesc->name = vreg_priv->name;
rdesc->ops = ®ulator_stub_ops;
/*
* Ensure that voltage set points are handled correctly for regulators
* which have a specified voltage constraint range, as well as those
* that do not.
*/
if (init_data->constraints.min_uV == 0 &&
init_data->constraints.max_uV == 0)
rdesc->n_voltages = 0;
else
rdesc->n_voltages = 2;
rdesc->id = pdev->id;
rdesc->owner = THIS_MODULE;
rdesc->type = REGULATOR_VOLTAGE;
vreg_priv->voltage = init_data->constraints.min_uV;
if (vreg_priv->system_uA >= vreg_priv->hpm_min_load)
vreg_priv->mode = REGULATOR_MODE_NORMAL;
else
vreg_priv->mode = REGULATOR_MODE_IDLE;
reg_config.dev = dev;
reg_config.init_data = init_data;
reg_config.driver_data = vreg_priv;
reg_config.of_node = dev->of_node;
vreg_priv->rdev = regulator_register(rdesc, ®_config);
if (IS_ERR(vreg_priv->rdev)) {
rc = PTR_ERR(vreg_priv->rdev);
vreg_priv->rdev = NULL;
if (rc != -EPROBE_DEFER)
dev_err(dev, "%s: regulator_register failed\n",
__func__);
goto err_probe;
}
return 0;
err_probe:
regulator_stub_cleanup(vreg_priv);
return rc;
}
static int gdsc_probe(struct platform_device *pdev)
{
static atomic_t gdsc_count = ATOMIC_INIT(-1);
struct regulator_config reg_config = {};
struct regulator_init_data *init_data;
struct resource *res;
struct gdsc *sc;
uint32_t regval;
bool retain_mem, retain_periph, support_hw_trigger;
int i, ret;
sc = devm_kzalloc(&pdev->dev, sizeof(struct gdsc), GFP_KERNEL);
if (sc == NULL)
return -ENOMEM;
init_data = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node);
if (init_data == NULL)
return -ENOMEM;
if (of_get_property(pdev->dev.of_node, "parent-supply", NULL))
init_data->supply_regulator = "parent";
ret = of_property_read_string(pdev->dev.of_node, "regulator-name",
&sc->rdesc.name);
if (ret)
return ret;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res == NULL)
return -EINVAL;
sc->gdscr = devm_ioremap(&pdev->dev, res->start, resource_size(res));
if (sc->gdscr == NULL)
return -ENOMEM;
sc->clock_count = of_property_count_strings(pdev->dev.of_node,
"clock-names");
if (sc->clock_count == -EINVAL) {
sc->clock_count = 0;
} else if (IS_ERR_VALUE(sc->clock_count)) {
dev_err(&pdev->dev, "Failed to get clock names\n");
return -EINVAL;
}
sc->clocks = devm_kzalloc(&pdev->dev,
sizeof(struct clk *) * sc->clock_count, GFP_KERNEL);
if (!sc->clocks)
return -ENOMEM;
sc->root_en = of_property_read_bool(pdev->dev.of_node,
"qcom,enable-root-clk");
for (i = 0; i < sc->clock_count; i++) {
const char *clock_name;
of_property_read_string_index(pdev->dev.of_node, "clock-names",
i, &clock_name);
sc->clocks[i] = devm_clk_get(&pdev->dev, clock_name);
if (IS_ERR(sc->clocks[i])) {
int rc = PTR_ERR(sc->clocks[i]);
if (rc != -EPROBE_DEFER)
dev_err(&pdev->dev, "Failed to get %s\n",
clock_name);
return rc;
}
}
sc->rdesc.id = atomic_inc_return(&gdsc_count);
sc->rdesc.ops = &gdsc_ops;
sc->rdesc.type = REGULATOR_VOLTAGE;
sc->rdesc.owner = THIS_MODULE;
platform_set_drvdata(pdev, sc);
/*
* Disable HW trigger: collapse/restore occur based on registers writes.
* Disable SW override: Use hardware state-machine for sequencing.
*/
regval = readl_relaxed(sc->gdscr);
regval &= ~(HW_CONTROL_MASK | SW_OVERRIDE_MASK);
/* Configure wait time between states. */
regval &= ~(EN_REST_WAIT_MASK | EN_FEW_WAIT_MASK | CLK_DIS_WAIT_MASK);
regval |= EN_REST_WAIT_VAL | EN_FEW_WAIT_VAL | CLK_DIS_WAIT_VAL;
writel_relaxed(regval, sc->gdscr);
retain_mem = of_property_read_bool(pdev->dev.of_node,
"qcom,retain-mem");
sc->toggle_mem = !retain_mem;
retain_periph = of_property_read_bool(pdev->dev.of_node,
"qcom,retain-periph");
sc->toggle_periph = !retain_periph;
sc->toggle_logic = !of_property_read_bool(pdev->dev.of_node,
"qcom,skip-logic-collapse");
support_hw_trigger = of_property_read_bool(pdev->dev.of_node,
"qcom,support-hw-trigger");
if (support_hw_trigger) {
init_data->constraints.valid_ops_mask |= REGULATOR_CHANGE_MODE;
init_data->constraints.valid_modes_mask |=
REGULATOR_MODE_NORMAL | REGULATOR_MODE_FAST;
}
if (!sc->toggle_logic) {
regval &= ~SW_COLLAPSE_MASK;
writel_relaxed(regval, sc->gdscr);
ret = readl_tight_poll_timeout(sc->gdscr, regval,
regval & PWR_ON_MASK, TIMEOUT_US);
if (ret) {
dev_err(&pdev->dev, "%s enable timed out: 0x%x\n",
sc->rdesc.name, regval);
return ret;
}
}
for (i = 0; i < sc->clock_count; i++) {
if (retain_mem || (regval & PWR_ON_MASK))
clk_set_flags(sc->clocks[i], CLKFLAG_RETAIN_MEM);
else
clk_set_flags(sc->clocks[i], CLKFLAG_NORETAIN_MEM);
if (retain_periph || (regval & PWR_ON_MASK))
clk_set_flags(sc->clocks[i], CLKFLAG_RETAIN_PERIPH);
else
clk_set_flags(sc->clocks[i], CLKFLAG_NORETAIN_PERIPH);
}
reg_config.dev = &pdev->dev;
reg_config.init_data = init_data;
reg_config.driver_data = sc;
reg_config.of_node = pdev->dev.of_node;
sc->rdev = regulator_register(&sc->rdesc, ®_config);
if (IS_ERR(sc->rdev)) {
dev_err(&pdev->dev, "regulator_register(\"%s\") failed.\n",
sc->rdesc.name);
return PTR_ERR(sc->rdev);
}
return 0;
}
static struct ncp6335d_platform_data *
ncp6335d_get_of_platform_data(struct i2c_client *client)
{
struct ncp6335d_platform_data *pdata = NULL;
struct regulator_init_data *init_data;
const char *mode_name;
int rc;
init_data = of_get_regulator_init_data(&client->dev,
client->dev.of_node);
if (!init_data) {
dev_err(&client->dev, "regulator init data is missing\n");
return pdata;
}
pdata = devm_kzalloc(&client->dev,
sizeof(struct ncp6335d_platform_data), GFP_KERNEL);
if (!pdata) {
dev_err(&client->dev, "ncp6335d_platform_data allocation failed.\n");
return pdata;
}
rc = of_property_read_u32(client->dev.of_node,
"onnn,vsel", &pdata->default_vsel);
if (rc < 0) {
dev_err(&client->dev, "onnn,vsel property missing: rc = %d.\n",
rc);
return NULL;
}
rc = of_property_read_u32(client->dev.of_node,
"onnn,slew-ns", &pdata->slew_rate_ns);
if (rc < 0) {
dev_err(&client->dev, "onnn,slew-ns property missing: rc = %d.\n",
rc);
return NULL;
}
pdata->discharge_enable = of_property_read_bool(client->dev.of_node,
"onnn,discharge-enable");
pdata->sleep_enable = of_property_read_bool(client->dev.of_node,
"onnn,sleep-enable");
pdata->init_data = init_data;
init_data->constraints.input_uV = init_data->constraints.max_uV;
init_data->constraints.valid_ops_mask =
REGULATOR_CHANGE_VOLTAGE |
REGULATOR_CHANGE_STATUS |
REGULATOR_CHANGE_MODE;
init_data->constraints.valid_modes_mask =
REGULATOR_MODE_NORMAL |
REGULATOR_MODE_FAST;
rc = of_property_read_string(client->dev.of_node, "onnn,mode",
&mode_name);
if (!rc) {
if (strcmp("pwm", mode_name) == 0) {
init_data->constraints.initial_mode =
REGULATOR_MODE_FAST;
} else if (strcmp("auto", mode_name) == 0) {
init_data->constraints.initial_mode =
REGULATOR_MODE_NORMAL;
} else {
dev_err(&client->dev, "onnn,mode, unknown regulator mode: %s\n",
mode_name);
return NULL;
}
}
return pdata;
}
static struct gpio_regulator_config *
of_get_gpio_regulator_config(struct device *dev, struct device_node *np)
{
struct gpio_regulator_config *config;
struct property *prop;
const char *regtype;
int proplen, gpio, i;
int ret;
config = devm_kzalloc(dev,
sizeof(struct gpio_regulator_config),
GFP_KERNEL);
if (!config)
return ERR_PTR(-ENOMEM);
config->init_data = of_get_regulator_init_data(dev, np);
if (!config->init_data)
return ERR_PTR(-EINVAL);
config->supply_name = config->init_data->constraints.name;
if (of_property_read_bool(np, "enable-active-high"))
config->enable_high = true;
if (of_property_read_bool(np, "enable-at-boot"))
config->enabled_at_boot = true;
of_property_read_u32(np, "startup-delay-us", &config->startup_delay);
config->enable_gpio = of_get_named_gpio(np, "enable-gpio", 0);
/* Fetch GPIOs. */
config->nr_gpios = of_gpio_count(np);
config->gpios = devm_kzalloc(dev,
sizeof(struct gpio) * config->nr_gpios,
GFP_KERNEL);
if (!config->gpios)
return ERR_PTR(-ENOMEM);
prop = of_find_property(np, "gpios-states", NULL);
if (prop) {
proplen = prop->length / sizeof(int);
if (proplen != config->nr_gpios) {
/* gpios <-> gpios-states mismatch */
prop = NULL;
}
}
for (i = 0; i < config->nr_gpios; i++) {
gpio = of_get_named_gpio(np, "gpios", i);
if (gpio < 0)
break;
config->gpios[i].gpio = gpio;
if (prop && be32_to_cpup((int *)prop->value + i))
config->gpios[i].flags = GPIOF_OUT_INIT_HIGH;
}
/* Fetch states. */
prop = of_find_property(np, "states", NULL);
if (!prop) {
dev_err(dev, "No 'states' property found\n");
return ERR_PTR(-EINVAL);
}
proplen = prop->length / sizeof(int);
config->states = devm_kzalloc(dev,
sizeof(struct gpio_regulator_state)
* (proplen / 2),
GFP_KERNEL);
if (!config->states)
return ERR_PTR(-ENOMEM);
for (i = 0; i < proplen / 2; i++) {
config->states[i].value =
be32_to_cpup((int *)prop->value + (i * 2));
config->states[i].gpios =
be32_to_cpup((int *)prop->value + (i * 2 + 1));
}
config->nr_states = i;
config->type = REGULATOR_VOLTAGE;
ret = of_property_read_string(np, "regulator-type", ®type);
if (ret >= 0) {
if (!strncmp("voltage", regtype, 7))
config->type = REGULATOR_VOLTAGE;
else if (!strncmp("current", regtype, 7))
config->type = REGULATOR_CURRENT;
else
dev_warn(dev, "Unknown regulator-type '%s'\n",
regtype);
}
return config;
}
{
int i, id;
struct twlreg_info *info;
const struct twlreg_info *template;
struct regulator_init_data *initdata;
struct regulation_constraints *c;
struct regulator_dev *rdev;
struct twl_regulator_driver_data *drvdata;
const struct of_device_id *match;
struct regulator_config config = { };
match = of_match_device(twl_of_match, &pdev->dev);
if (match) {
template = match->data;
id = template->desc.id;
initdata = of_get_regulator_init_data(&pdev->dev,
pdev->dev.of_node);
drvdata = NULL;
} else {
id = pdev->id;
initdata = pdev->dev.platform_data;
for (i = 0, template = NULL; i < ARRAY_SIZE(twl_of_match); i++) {
template = twl_of_match[i].data;
if (template && template->desc.id == id)
break;
}
if (i == ARRAY_SIZE(twl_of_match))
return -ENODEV;
drvdata = initdata->driver_data;
if (!drvdata)
return -EINVAL;
static int max17135_pmic_dt_parse_pdata(struct platform_device *pdev,
struct max17135_platform_data *pdata)
{
struct max17135 *max17135 = dev_get_drvdata(pdev->dev.parent);
struct device_node *pmic_np, *regulators_np, *reg_np;
struct max17135_regulator_data *rdata;
int i, ret;
pmic_np = of_node_get(max17135->dev->of_node);
if (!pmic_np) {
dev_err(&pdev->dev, "could not find pmic sub-node\n");
return -ENODEV;
}
regulators_np = of_find_node_by_name(pmic_np, "regulators");
if (!regulators_np) {
dev_err(&pdev->dev, "could not find regulators sub-node\n");
return -EINVAL;
}
pdata->num_regulators = of_get_child_count(regulators_np);
dev_dbg(&pdev->dev, "num_regulators %d\n", pdata->num_regulators);
rdata = devm_kzalloc(&pdev->dev, sizeof(*rdata) *
pdata->num_regulators, GFP_KERNEL);
if (!rdata) {
of_node_put(regulators_np);
dev_err(&pdev->dev, "could not allocate memory for"
"regulator data\n");
return -ENOMEM;
}
pdata->regulators = rdata;
for_each_child_of_node(regulators_np, reg_np) {
for (i = 0; i < ARRAY_SIZE(max17135_reg); i++)
if (!of_node_cmp(reg_np->name, max17135_reg[i].name))
break;
if (i == ARRAY_SIZE(max17135_reg)) {
dev_warn(&pdev->dev, "don't know how to configure"
"regulator %s\n", reg_np->name);
continue;
}
rdata->id = i;
rdata->initdata = of_get_regulator_init_data(&pdev->dev,
reg_np,
&max17135_reg[i]);
rdata->reg_node = reg_np;
rdata++;
}
of_node_put(regulators_np);
CHECK_PROPERTY_ERROR_KFREE(vneg_pwrup);
CHECK_PROPERTY_ERROR_KFREE(gvee_pwrup);
CHECK_PROPERTY_ERROR_KFREE(vpos_pwrup);
CHECK_PROPERTY_ERROR_KFREE(gvdd_pwrup);
CHECK_PROPERTY_ERROR_KFREE(gvdd_pwrdn);
CHECK_PROPERTY_ERROR_KFREE(vpos_pwrdn);
CHECK_PROPERTY_ERROR_KFREE(gvee_pwrdn);
CHECK_PROPERTY_ERROR_KFREE(vneg_pwrdn);
dev_dbg(&pdev->dev, "vneg_pwrup %d, vneg_pwrdn %d, vpos_pwrup %d,"
"vpos_pwrdn %d, gvdd_pwrup %d, gvdd_pwrdn %d, gvee_pwrup %d,"
"gvee_pwrdn %d\n", max17135->vneg_pwrup, max17135->vneg_pwrdn,
max17135->vpos_pwrup, max17135->vpos_pwrdn,
max17135->gvdd_pwrup, max17135->gvdd_pwrdn,
max17135->gvee_pwrup, max17135->gvee_pwrdn);
max17135->max_wait = max17135->vpos_pwrup + max17135->vneg_pwrup +
max17135->gvdd_pwrup + max17135->gvee_pwrup;
max17135->gpio_pmic_wakeup = of_get_named_gpio(pmic_np,
"gpio_pmic_wakeup", 0);
if (!gpio_is_valid(max17135->gpio_pmic_wakeup)) {
dev_err(&pdev->dev, "no epdc pmic wakeup pin available\n");
goto err;
}
ret = devm_gpio_request_one(&pdev->dev, max17135->gpio_pmic_wakeup,
GPIOF_OUT_INIT_LOW, "epdc-pmic-wake");
if (ret < 0)
goto err;
max17135->gpio_pmic_vcom_ctrl = of_get_named_gpio(pmic_np,
"gpio_pmic_vcom_ctrl", 0);
if (!gpio_is_valid(max17135->gpio_pmic_vcom_ctrl)) {
dev_err(&pdev->dev, "no epdc pmic vcom_ctrl pin available\n");
goto err;
}
ret = devm_gpio_request_one(&pdev->dev, max17135->gpio_pmic_vcom_ctrl,
GPIOF_OUT_INIT_LOW, "epdc-vcom");
if (ret < 0)
goto err;
max17135->gpio_pmic_v3p3 = of_get_named_gpio(pmic_np,
"gpio_pmic_v3p3", 0);
if (!gpio_is_valid(max17135->gpio_pmic_v3p3)) {
dev_err(&pdev->dev, "no epdc pmic v3p3 pin available\n");
goto err;
}
ret = devm_gpio_request_one(&pdev->dev, max17135->gpio_pmic_v3p3,
GPIOF_OUT_INIT_LOW, "epdc-v3p3");
if (ret < 0)
goto err;
max17135->gpio_pmic_intr = of_get_named_gpio(pmic_np,
"gpio_pmic_intr", 0);
if (!gpio_is_valid(max17135->gpio_pmic_intr)) {
dev_err(&pdev->dev, "no epdc pmic intr pin available\n");
goto err;
}
ret = devm_gpio_request_one(&pdev->dev, max17135->gpio_pmic_intr,
GPIOF_IN, "epdc-pmic-int");
if (ret < 0)
goto err;
max17135->gpio_pmic_pwrgood = of_get_named_gpio(pmic_np,
"gpio_pmic_pwrgood", 0);
if (!gpio_is_valid(max17135->gpio_pmic_pwrgood)) {
dev_err(&pdev->dev, "no epdc pmic pwrgood pin available\n");
goto err;
}
ret = devm_gpio_request_one(&pdev->dev, max17135->gpio_pmic_pwrgood,
GPIOF_IN, "epdc-pwrstat");
if (ret < 0)
goto err;
err:
return 0;
}
/**
* ti_abb_probe() - Initialize an ABB ldo instance
* @pdev: ABB platform device
*
* Initializes an individual ABB LDO for required Body-Bias. ABB is used to
* addional bias supply to SoC modules for power savings or mandatory stability
* configuration at certain Operating Performance Points(OPPs).
*
* Return: 0 on success or appropriate error value when fails
*/
static int ti_abb_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
const struct of_device_id *match;
struct resource *res;
struct ti_abb *abb;
struct regulator_init_data *initdata = NULL;
struct regulator_dev *rdev = NULL;
struct regulator_desc *desc;
struct regulation_constraints *c;
struct regulator_config config = { };
char *pname;
int ret = 0;
match = of_match_device(ti_abb_of_match, dev);
if (!match) {
/* We do not expect this to happen */
dev_err(dev, "%s: Unable to match device\n", __func__);
return -ENODEV;
}
if (!match->data) {
dev_err(dev, "%s: Bad data in match\n", __func__);
return -EINVAL;
}
abb = devm_kzalloc(dev, sizeof(struct ti_abb), GFP_KERNEL);
if (!abb)
return -ENOMEM;
abb->regs = match->data;
/* Map ABB resources */
if (abb->regs->setup_off || abb->regs->control_off) {
pname = "base-address";
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, pname);
abb->base = devm_ioremap_resource(dev, res);
if (IS_ERR(abb->base))
return PTR_ERR(abb->base);
abb->setup_reg = abb->base + abb->regs->setup_off;
abb->control_reg = abb->base + abb->regs->control_off;
} else {
pname = "control-address";
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, pname);
abb->control_reg = devm_ioremap_resource(dev, res);
if (IS_ERR(abb->control_reg))
return PTR_ERR(abb->control_reg);
pname = "setup-address";
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, pname);
abb->setup_reg = devm_ioremap_resource(dev, res);
if (IS_ERR(abb->setup_reg))
return PTR_ERR(abb->setup_reg);
}
pname = "int-address";
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, pname);
if (!res) {
dev_err(dev, "Missing '%s' IO resource\n", pname);
return -ENODEV;
}
/*
* We may have shared interrupt register offsets which are
* write-1-to-clear between domains ensuring exclusivity.
*/
abb->int_base = devm_ioremap_nocache(dev, res->start,
resource_size(res));
if (!abb->int_base) {
dev_err(dev, "Unable to map '%s'\n", pname);
return -ENOMEM;
}
/* Map Optional resources */
pname = "efuse-address";
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, pname);
if (!res) {
dev_dbg(dev, "Missing '%s' IO resource\n", pname);
ret = -ENODEV;
goto skip_opt;
}
/*
* We may have shared efuse register offsets which are read-only
* between domains
*/
abb->efuse_base = devm_ioremap_nocache(dev, res->start,
resource_size(res));
if (!abb->efuse_base) {
dev_err(dev, "Unable to map '%s'\n", pname);
return -ENOMEM;
}
pname = "ldo-address";
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, pname);
if (!res) {
dev_dbg(dev, "Missing '%s' IO resource\n", pname);
ret = -ENODEV;
goto skip_opt;
}
abb->ldo_base = devm_ioremap_resource(dev, res);
if (IS_ERR(abb->ldo_base))
return PTR_ERR(abb->ldo_base);
/* IF ldo_base is set, the following are mandatory */
pname = "ti,ldovbb-override-mask";
ret =
of_property_read_u32(pdev->dev.of_node, pname,
&abb->ldovbb_override_mask);
if (ret) {
dev_err(dev, "Missing '%s' (%d)\n", pname, ret);
return ret;
}
if (!abb->ldovbb_override_mask) {
dev_err(dev, "Invalid property:'%s' set as 0!\n", pname);
return -EINVAL;
}
pname = "ti,ldovbb-vset-mask";
ret =
of_property_read_u32(pdev->dev.of_node, pname,
&abb->ldovbb_vset_mask);
if (ret) {
dev_err(dev, "Missing '%s' (%d)\n", pname, ret);
return ret;
}
if (!abb->ldovbb_vset_mask) {
dev_err(dev, "Invalid property:'%s' set as 0!\n", pname);
return -EINVAL;
}
skip_opt:
pname = "ti,tranxdone-status-mask";
ret =
of_property_read_u32(pdev->dev.of_node, pname,
&abb->txdone_mask);
if (ret) {
dev_err(dev, "Missing '%s' (%d)\n", pname, ret);
return ret;
}
if (!abb->txdone_mask) {
dev_err(dev, "Invalid property:'%s' set as 0!\n", pname);
return -EINVAL;
}
initdata = of_get_regulator_init_data(dev, pdev->dev.of_node);
if (!initdata) {
dev_err(dev, "%s: Unable to alloc regulator init data\n",
__func__);
return -ENOMEM;
}
/* init ABB opp_sel table */
ret = ti_abb_init_table(dev, abb, initdata);
if (ret)
return ret;
/* init ABB timing */
ret = ti_abb_init_timings(dev, abb);
if (ret)
return ret;
desc = &abb->rdesc;
desc->name = dev_name(dev);
desc->owner = THIS_MODULE;
desc->type = REGULATOR_VOLTAGE;
desc->ops = &ti_abb_reg_ops;
c = &initdata->constraints;
if (desc->n_voltages > 1)
c->valid_ops_mask |= REGULATOR_CHANGE_VOLTAGE;
c->always_on = true;
config.dev = dev;
config.init_data = initdata;
config.driver_data = abb;
config.of_node = pdev->dev.of_node;
rdev = devm_regulator_register(dev, desc, &config);
if (IS_ERR(rdev)) {
ret = PTR_ERR(rdev);
dev_err(dev, "%s: failed to register regulator(%d)\n",
__func__, ret);
return ret;
}
platform_set_drvdata(pdev, rdev);
/* Enable the ldo if not already done by bootloader */
ti_abb_rmw(abb->regs->sr2_en_mask, 1, abb->setup_reg);
return 0;
}
static int s2mps13_pmic_dt_parse_pdata(struct sec_pmic_dev *iodev,
struct sec_platform_data *pdata)
{
struct device_node *pmic_np, *regulators_np, *reg_np;
struct sec_regulator_data *rdata;
unsigned int i, s2mps13_desc_type;
int ret;
u32 val;
pmic_np = iodev->dev->of_node;
if (!pmic_np) {
dev_err(iodev->dev, "could not find pmic sub-node\n");
return -ENODEV;
}
/* If pmic revision number over 0x02, get 3 gpio values */
if (SEC_PMIC_REV(iodev) > 0x02) {
if (of_gpio_count(pmic_np) < 3) {
dev_err(iodev->dev, "could not find pmic gpios\n");
return -EINVAL;
}
pdata->smpl_warn = of_get_gpio(pmic_np, 0);
pdata->g3d_pin = of_get_gpio(pmic_np, 1);
pdata->dvs_pin = of_get_gpio(pmic_np, 2);
ret = of_property_read_u32(pmic_np, "g3d_en", &val);
if (ret)
return -EINVAL;
pdata->g3d_en = !!val;
ret = of_property_read_u32(pmic_np, "dvs_en", &val);
if (ret)
return -EINVAL;
pdata->dvs_en = !!val;
ret = of_property_read_u32(pmic_np, "smpl_warn_en", &val);
if (ret)
return -EINVAL;
pdata->smpl_warn_en = !!val;
} else {
dev_err(iodev->dev, "cannot control g3d_en & dvs_en\n");
}
pdata->ap_buck_avp_en = false;
pdata->sub_buck_avp_en = false;
if (of_find_property(pmic_np, "ap-buck-avp-en", NULL))
pdata->ap_buck_avp_en = true;
if (of_find_property(pmic_np, "sub-buck-avp-en", NULL))
pdata->sub_buck_avp_en = true;
regulators_np = of_find_node_by_name(pmic_np, "regulators");
if (!regulators_np) {
dev_err(iodev->dev, "could not find regulators sub-node\n");
return -EINVAL;
}
/* count the number of regulators to be supported in pmic */
pdata->num_regulators = 0;
for_each_child_of_node(regulators_np, reg_np) {
pdata->num_regulators++;
}
rdata = devm_kzalloc(iodev->dev, sizeof(*rdata) *
pdata->num_regulators, GFP_KERNEL);
if (!rdata) {
dev_err(iodev->dev,
"could not allocate memory for regulator data\n");
return -ENOMEM;
}
pdata->regulators = rdata;
s2mps13_desc_type = SEC_PMIC_REV(iodev) ? S2MPS13_DESC_TYPE1 : S2MPS13_DESC_TYPE0;
for_each_child_of_node(regulators_np, reg_np) {
for (i = 0; i < ARRAY_SIZE(regulators[s2mps13_desc_type]); i++)
if (!of_node_cmp(reg_np->name,
regulators[s2mps13_desc_type][i].name))
break;
if (i == ARRAY_SIZE(regulators[s2mps13_desc_type])) {
dev_warn(iodev->dev,
"don't know how to configure regulator %s\n",
reg_np->name);
continue;
}
rdata->id = i;
rdata->initdata = of_get_regulator_init_data(
iodev->dev, reg_np);
rdata->reg_node = reg_np;
rdata++;
}
return 0;
}
static int __devinit gdsc_probe(struct platform_device *pdev)
{
static atomic_t gdsc_count = ATOMIC_INIT(-1);
struct regulator_init_data *init_data;
struct resource *res;
struct gdsc *sc;
uint32_t regval;
bool retain_mem, retain_periph;
int i, ret;
#ifdef CONFIG_MACH_LGE
int use_lge_workaround = 0; /* default: all not applied */
#endif
sc = devm_kzalloc(&pdev->dev, sizeof(struct gdsc), GFP_KERNEL);
if (sc == NULL)
return -ENOMEM;
init_data = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node);
if (init_data == NULL)
return -ENOMEM;
if (of_get_property(pdev->dev.of_node, "parent-supply", NULL))
init_data->supply_regulator = "parent";
ret = of_property_read_string(pdev->dev.of_node, "regulator-name",
&sc->rdesc.name);
if (ret)
return ret;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res == NULL)
return -EINVAL;
sc->gdscr = devm_ioremap(&pdev->dev, res->start, resource_size(res));
if (sc->gdscr == NULL)
return -ENOMEM;
sc->clock_count = of_property_count_strings(pdev->dev.of_node,
"qcom,clock-names");
if (sc->clock_count == -EINVAL) {
sc->clock_count = 0;
} else if (IS_ERR_VALUE(sc->clock_count)) {
dev_err(&pdev->dev, "Failed to get clock names\n");
return -EINVAL;
}
sc->clocks = devm_kzalloc(&pdev->dev,
sizeof(struct clk *) * sc->clock_count, GFP_KERNEL);
if (!sc->clocks)
return -ENOMEM;
for (i = 0; i < sc->clock_count; i++) {
const char *clock_name;
of_property_read_string_index(pdev->dev.of_node,
"qcom,clock-names", i,
&clock_name);
sc->clocks[i] = devm_clk_get(&pdev->dev, clock_name);
if (IS_ERR(sc->clocks[i])) {
int rc = PTR_ERR(sc->clocks[i]);
if (rc != -EPROBE_DEFER)
dev_err(&pdev->dev, "Failed to get %s\n",
clock_name);
return rc;
}
}
#ifdef CONFIG_MACH_LGE
of_property_read_u32(pdev->dev.of_node, "lge,use_workaround",
&use_lge_workaround);
sc->use_lge_workaround = !(!use_lge_workaround);
#endif
sc->rdesc.id = atomic_inc_return(&gdsc_count);
sc->rdesc.ops = &gdsc_ops;
sc->rdesc.type = REGULATOR_VOLTAGE;
sc->rdesc.owner = THIS_MODULE;
platform_set_drvdata(pdev, sc);
/*
* Disable HW trigger: collapse/restore occur based on registers writes.
* Disable SW override: Use hardware state-machine for sequencing.
*/
regval = readl_relaxed(sc->gdscr);
regval &= ~(HW_CONTROL_MASK | SW_OVERRIDE_MASK);
/* Configure wait time between states. */
regval &= ~(EN_REST_WAIT_MASK | EN_FEW_WAIT_MASK | CLK_DIS_WAIT_MASK);
regval |= EN_REST_WAIT_VAL | EN_FEW_WAIT_VAL | CLK_DIS_WAIT_VAL;
writel_relaxed(regval, sc->gdscr);
retain_mem = of_property_read_bool(pdev->dev.of_node,
"qcom,retain-mem");
retain_periph = of_property_read_bool(pdev->dev.of_node,
"qcom,retain-periph");
for (i = 0; i < sc->clock_count; i++) {
if (retain_mem || (regval & PWR_ON_MASK))
clk_set_flags(sc->clocks[i], CLKFLAG_RETAIN_MEM);
else
clk_set_flags(sc->clocks[i], CLKFLAG_NORETAIN_MEM);
if (retain_periph || (regval & PWR_ON_MASK))
clk_set_flags(sc->clocks[i], CLKFLAG_RETAIN_PERIPH);
else
clk_set_flags(sc->clocks[i], CLKFLAG_NORETAIN_PERIPH);
}
sc->toggle_mem = !retain_mem;
sc->toggle_periph = !retain_periph;
sc->toggle_logic = !of_property_read_bool(pdev->dev.of_node,
"qcom,skip-logic-collapse");
if (!sc->toggle_logic) {
#ifdef CONFIG_MACH_LGE
/* LGE workaround is not used if a device is good pdn revision */
if (lge_get_board_revno() >= use_lge_workaround) {
regval &= ~SW_COLLAPSE_MASK;
writel_relaxed(regval, sc->gdscr);
ret = readl_tight_poll_timeout(sc->gdscr, regval,
regval & PWR_ON_MASK, TIMEOUT_US);
if (ret) {
dev_err(&pdev->dev, "%s enable timed out\n",
sc->rdesc.name);
return ret;
}
} else {
pr_info("%s: %s is enabled only at first by lge workaround\n",
__func__, sc->rdesc.name);
ret = lge_gdsc_enable(sc);
if (ret) {
dev_err(&pdev->dev, "%s enable timed out\n",
sc->rdesc.name);
return ret;
}
}
#else /* qmc */
regval &= ~SW_COLLAPSE_MASK;
writel_relaxed(regval, sc->gdscr);
ret = readl_tight_poll_timeout(sc->gdscr, regval,
regval & PWR_ON_MASK, TIMEOUT_US);
if (ret) {
dev_err(&pdev->dev, "%s enable timed out\n",
sc->rdesc.name);
return ret;
}
#endif
}
sc->rdev = regulator_register(&sc->rdesc, &pdev->dev, init_data, sc,
pdev->dev.of_node);
if (IS_ERR(sc->rdev)) {
dev_err(&pdev->dev, "regulator_register(\"%s\") failed.\n",
sc->rdesc.name);
return PTR_ERR(sc->rdev);
}
return 0;
}
