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-rw-r--r--drivers/regulator/ab3100.c236
-rw-r--r--drivers/regulator/mc13783-regulator.c44
-rw-r--r--drivers/regulator/mc13892-regulator.c45
-rw-r--r--drivers/regulator/mc13xxx-regulator-core.c17
-rw-r--r--drivers/regulator/mc13xxx.h4
5 files changed, 235 insertions, 111 deletions
diff --git a/drivers/regulator/ab3100.c b/drivers/regulator/ab3100.c
index 111ec69a3e94..3be9e46594a1 100644
--- a/drivers/regulator/ab3100.c
+++ b/drivers/regulator/ab3100.c
@@ -17,6 +17,8 @@
#include <linux/regulator/driver.h>
#include <linux/mfd/ab3100.h>
#include <linux/mfd/abx500.h>
+#include <linux/of.h>
+#include <linux/regulator/of_regulator.h>
/* LDO registers and some handy masking definitions for AB3100 */
#define AB3100_LDO_A 0x40
@@ -345,7 +347,11 @@ static int ab3100_get_voltage_regulator_external(struct regulator_dev *reg)
{
struct ab3100_regulator *abreg = rdev_get_drvdata(reg);
- return abreg->plfdata->external_voltage;
+ if (abreg->plfdata)
+ return abreg->plfdata->external_voltage;
+ else
+ /* TODO: encode external voltage into device tree */
+ return 0;
}
static struct regulator_ops regulator_ops_fixed = {
@@ -488,16 +494,174 @@ ab3100_regulator_desc[AB3100_NUM_REGULATORS] = {
},
};
+static int ab3100_regulator_register(struct platform_device *pdev,
+ struct ab3100_platform_data *plfdata,
+ struct regulator_init_data *init_data,
+ struct device_node *np,
+ int id)
+{
+ struct regulator_desc *desc;
+ struct ab3100_regulator *reg;
+ struct regulator_dev *rdev;
+ struct regulator_config config = { };
+ int err, i;
+
+ for (i = 0; i < AB3100_NUM_REGULATORS; i++) {
+ desc = &ab3100_regulator_desc[i];
+ if (desc->id == id)
+ break;
+ }
+ if (desc->id != id)
+ return -ENODEV;
+
+ /* Same index used for this array */
+ reg = &ab3100_regulators[i];
+
+ /*
+ * Initialize per-regulator struct.
+ * Inherit platform data, this comes down from the
+ * i2c boarddata, from the machine. So if you want to
+ * see what it looks like for a certain machine, go
+ * into the machine I2C setup.
+ */
+ reg->dev = &pdev->dev;
+ if (plfdata) {
+ reg->plfdata = plfdata;
+ config.init_data = &plfdata->reg_constraints[i];
+ } else if (np) {
+ config.of_node = np;
+ config.init_data = init_data;
+ }
+ config.dev = &pdev->dev;
+ config.driver_data = reg;
+
+ rdev = regulator_register(desc, &config);
+ if (IS_ERR(rdev)) {
+ err = PTR_ERR(rdev);
+ dev_err(&pdev->dev,
+ "%s: failed to register regulator %s err %d\n",
+ __func__, desc->name,
+ err);
+ return err;
+ }
+
+ /* Then set a pointer back to the registered regulator */
+ reg->rdev = rdev;
+ return 0;
+}
+
+static struct of_regulator_match ab3100_regulator_matches[] = {
+ { .name = "ab3100_ldo_a", .driver_data = (void *) AB3100_LDO_A, },
+ { .name = "ab3100_ldo_c", .driver_data = (void *) AB3100_LDO_C, },
+ { .name = "ab3100_ldo_d", .driver_data = (void *) AB3100_LDO_D, },
+ { .name = "ab3100_ldo_e", .driver_data = (void *) AB3100_LDO_E, },
+ { .name = "ab3100_ldo_f", .driver_data = (void *) AB3100_LDO_F },
+ { .name = "ab3100_ldo_g", .driver_data = (void *) AB3100_LDO_G },
+ { .name = "ab3100_ldo_h", .driver_data = (void *) AB3100_LDO_H },
+ { .name = "ab3100_ldo_k", .driver_data = (void *) AB3100_LDO_K },
+ { .name = "ab3100_ext", .driver_data = (void *) AB3100_LDO_EXT },
+ { .name = "ab3100_buck", .driver_data = (void *) AB3100_BUCK },
+};
+
/*
- * NOTE: the following functions are regulators pluralis - it is the
- * binding to the AB3100 core driver and the parent platform device
- * for all the different regulators.
+ * Initial settings of ab3100 registers.
+ * Common for below LDO regulator settings are that
+ * bit 7-5 controls voltage. Bit 4 turns regulator ON(1) or OFF(0).
+ * Bit 3-2 controls sleep enable and bit 1-0 controls sleep mode.
*/
+/* LDO_A 0x16: 2.75V, ON, SLEEP_A, SLEEP OFF GND */
+#define LDO_A_SETTING 0x16
+/* LDO_C 0x10: 2.65V, ON, SLEEP_A or B, SLEEP full power */
+#define LDO_C_SETTING 0x10
+/* LDO_D 0x10: 2.65V, ON, sleep mode not used */
+#define LDO_D_SETTING 0x10
+/* LDO_E 0x10: 1.8V, ON, SLEEP_A or B, SLEEP full power */
+#define LDO_E_SETTING 0x10
+/* LDO_E SLEEP 0x00: 1.8V, not used, SLEEP_A or B, not used */
+#define LDO_E_SLEEP_SETTING 0x00
+/* LDO_F 0xD0: 2.5V, ON, SLEEP_A or B, SLEEP full power */
+#define LDO_F_SETTING 0xD0
+/* LDO_G 0x00: 2.85V, OFF, SLEEP_A or B, SLEEP full power */
+#define LDO_G_SETTING 0x00
+/* LDO_H 0x18: 2.75V, ON, SLEEP_B, SLEEP full power */
+#define LDO_H_SETTING 0x18
+/* LDO_K 0x00: 2.75V, OFF, SLEEP_A or B, SLEEP full power */
+#define LDO_K_SETTING 0x00
+/* LDO_EXT 0x00: Voltage not set, OFF, not used, not used */
+#define LDO_EXT_SETTING 0x00
+/* BUCK 0x7D: 1.2V, ON, SLEEP_A and B, SLEEP low power */
+#define BUCK_SETTING 0x7D
+/* BUCK SLEEP 0xAC: 1.05V, Not used, SLEEP_A and B, Not used */
+#define BUCK_SLEEP_SETTING 0xAC
+
+static const u8 ab3100_reg_initvals[] = {
+ LDO_A_SETTING,
+ LDO_C_SETTING,
+ LDO_E_SETTING,
+ LDO_E_SLEEP_SETTING,
+ LDO_F_SETTING,
+ LDO_G_SETTING,
+ LDO_H_SETTING,
+ LDO_K_SETTING,
+ LDO_EXT_SETTING,
+ BUCK_SETTING,
+ BUCK_SLEEP_SETTING,
+ LDO_D_SETTING,
+};
+
+static int ab3100_regulators_remove(struct platform_device *pdev)
+{
+ int i;
+
+ for (i = 0; i < AB3100_NUM_REGULATORS; i++) {
+ struct ab3100_regulator *reg = &ab3100_regulators[i];
+
+ regulator_unregister(reg->rdev);
+ reg->rdev = NULL;
+ }
+ return 0;
+}
+
+static int
+ab3100_regulator_of_probe(struct platform_device *pdev, struct device_node *np)
+{
+ int err, i;
+
+ /*
+ * Set up the regulator registers, as was previously done with
+ * platform data.
+ */
+ /* Set up regulators */
+ for (i = 0; i < ARRAY_SIZE(ab3100_reg_init_order); i++) {
+ err = abx500_set_register_interruptible(&pdev->dev, 0,
+ ab3100_reg_init_order[i],
+ ab3100_reg_initvals[i]);
+ if (err) {
+ dev_err(&pdev->dev, "regulator initialization failed with error %d\n",
+ err);
+ return err;
+ }
+ }
+
+ for (i = 0; i < ARRAY_SIZE(ab3100_regulator_matches); i++) {
+ err = ab3100_regulator_register(
+ pdev, NULL, ab3100_regulator_matches[i].init_data,
+ ab3100_regulator_matches[i].of_node,
+ (int) ab3100_regulator_matches[i].driver_data);
+ if (err) {
+ ab3100_regulators_remove(pdev);
+ return err;
+ }
+ }
+
+ return 0;
+}
+
static int ab3100_regulators_probe(struct platform_device *pdev)
{
struct ab3100_platform_data *plfdata = pdev->dev.platform_data;
- struct regulator_config config = { };
+ struct device_node *np = pdev->dev.of_node;
int err = 0;
u8 data;
int i;
@@ -516,6 +680,18 @@ static int ab3100_regulators_probe(struct platform_device *pdev)
dev_notice(&pdev->dev,
"chip is in inactive mode (Cold start)\n");
+ if (np) {
+ err = of_regulator_match(&pdev->dev, np,
+ ab3100_regulator_matches,
+ ARRAY_SIZE(ab3100_regulator_matches));
+ if (err < 0) {
+ dev_err(&pdev->dev,
+ "Error parsing regulator init data: %d\n", err);
+ return err;
+ }
+ return ab3100_regulator_of_probe(pdev, np);
+ }
+
/* Set up regulators */
for (i = 0; i < ARRAY_SIZE(ab3100_reg_init_order); i++) {
err = abx500_set_register_interruptible(&pdev->dev, 0,
@@ -530,59 +706,19 @@ static int ab3100_regulators_probe(struct platform_device *pdev)
/* Register the regulators */
for (i = 0; i < AB3100_NUM_REGULATORS; i++) {
- struct ab3100_regulator *reg = &ab3100_regulators[i];
- struct regulator_dev *rdev;
-
- /*
- * Initialize per-regulator struct.
- * Inherit platform data, this comes down from the
- * i2c boarddata, from the machine. So if you want to
- * see what it looks like for a certain machine, go
- * into the machine I2C setup.
- */
- reg->dev = &pdev->dev;
- reg->plfdata = plfdata;
+ struct regulator_desc *desc = &ab3100_regulator_desc[i];
- config.dev = &pdev->dev;
- config.driver_data = reg;
- config.init_data = &plfdata->reg_constraints[i];
-
- /*
- * Register the regulator, pass around
- * the ab3100_regulator struct
- */
- rdev = regulator_register(&ab3100_regulator_desc[i], &config);
- if (IS_ERR(rdev)) {
- err = PTR_ERR(rdev);
- dev_err(&pdev->dev,
- "%s: failed to register regulator %s err %d\n",
- __func__, ab3100_regulator_desc[i].name,
- err);
- /* remove the already registered regulators */
- while (--i >= 0)
- regulator_unregister(ab3100_regulators[i].rdev);
+ err = ab3100_regulator_register(pdev, plfdata, NULL, NULL,
+ desc->id);
+ if (err) {
+ ab3100_regulators_remove(pdev);
return err;
}
-
- /* Then set a pointer back to the registered regulator */
- reg->rdev = rdev;
}
return 0;
}
-static int ab3100_regulators_remove(struct platform_device *pdev)
-{
- int i;
-
- for (i = 0; i < AB3100_NUM_REGULATORS; i++) {
- struct ab3100_regulator *reg = &ab3100_regulators[i];
-
- regulator_unregister(reg->rdev);
- }
- return 0;
-}
-
static struct platform_driver ab3100_regulators_driver = {
.driver = {
.name = "ab3100-regulators",
diff --git a/drivers/regulator/mc13783-regulator.c b/drivers/regulator/mc13783-regulator.c
index c46c6705cd74..fdf7f0a09090 100644
--- a/drivers/regulator/mc13783-regulator.c
+++ b/drivers/regulator/mc13783-regulator.c
@@ -398,33 +398,51 @@ static int mc13783_regulator_probe(struct platform_device *pdev)
struct mc13xxx *mc13783 = dev_get_drvdata(pdev->dev.parent);
struct mc13xxx_regulator_platform_data *pdata =
dev_get_platdata(&pdev->dev);
- struct mc13xxx_regulator_init_data *init_data;
+ struct mc13xxx_regulator_init_data *mc13xxx_data;
struct regulator_config config = { };
- int i, ret;
+ int i, ret, num_regulators;
- dev_dbg(&pdev->dev, "%s id %d\n", __func__, pdev->id);
+ num_regulators = mc13xxx_get_num_regulators_dt(pdev);
- if (!pdata)
+ if (num_regulators <= 0 && pdata)
+ num_regulators = pdata->num_regulators;
+ if (num_regulators <= 0)
return -EINVAL;
priv = devm_kzalloc(&pdev->dev, sizeof(*priv) +
- pdata->num_regulators * sizeof(priv->regulators[0]),
+ num_regulators * sizeof(priv->regulators[0]),
GFP_KERNEL);
if (!priv)
return -ENOMEM;
+ priv->num_regulators = num_regulators;
priv->mc13xxx_regulators = mc13783_regulators;
priv->mc13xxx = mc13783;
+ platform_set_drvdata(pdev, priv);
- for (i = 0; i < pdata->num_regulators; i++) {
- struct regulator_desc *desc;
+ mc13xxx_data = mc13xxx_parse_regulators_dt(pdev, mc13783_regulators,
+ ARRAY_SIZE(mc13783_regulators));
- init_data = &pdata->regulators[i];
- desc = &mc13783_regulators[init_data->id].desc;
+ for (i = 0; i < priv->num_regulators; i++) {
+ struct regulator_init_data *init_data;
+ struct regulator_desc *desc;
+ struct device_node *node = NULL;
+ int id;
+
+ if (mc13xxx_data) {
+ id = mc13xxx_data[i].id;
+ init_data = mc13xxx_data[i].init_data;
+ node = mc13xxx_data[i].node;
+ } else {
+ id = pdata->regulators[i].id;
+ init_data = pdata->regulators[i].init_data;
+ }
+ desc = &mc13783_regulators[id].desc;
config.dev = &pdev->dev;
- config.init_data = init_data->init_data;
+ config.init_data = init_data;
config.driver_data = priv;
+ config.of_node = node;
priv->regulators[i] = regulator_register(desc, &config);
if (IS_ERR(priv->regulators[i])) {
@@ -435,8 +453,6 @@ static int mc13783_regulator_probe(struct platform_device *pdev)
}
}
- platform_set_drvdata(pdev, priv);
-
return 0;
err:
while (--i >= 0)
@@ -448,13 +464,11 @@ err:
static int mc13783_regulator_remove(struct platform_device *pdev)
{
struct mc13xxx_regulator_priv *priv = platform_get_drvdata(pdev);
- struct mc13xxx_regulator_platform_data *pdata =
- dev_get_platdata(&pdev->dev);
int i;
platform_set_drvdata(pdev, NULL);
- for (i = 0; i < pdata->num_regulators; i++)
+ for (i = 0; i < priv->num_regulators; i++)
regulator_unregister(priv->regulators[i]);
return 0;
diff --git a/drivers/regulator/mc13892-regulator.c b/drivers/regulator/mc13892-regulator.c
index 9891aec47b57..b8d35ec598ea 100644
--- a/drivers/regulator/mc13892-regulator.c
+++ b/drivers/regulator/mc13892-regulator.c
@@ -465,13 +465,13 @@ static int mc13892_sw_regulator_set_voltage_sel(struct regulator_dev *rdev,
*/
if (mc13892_regulators[id].vsel_reg != MC13892_SWITCHERS0) {
+ mask |= MC13892_SWITCHERS0_SWxHI;
+
if (volt > 1375000) {
reg_value -= MC13892_SWxHI_SEL_OFFSET;
reg_value |= MC13892_SWITCHERS0_SWxHI;
- mask |= MC13892_SWITCHERS0_SWxHI;
- } else if (volt < 1100000) {
+ } else {
reg_value &= ~MC13892_SWITCHERS0_SWxHI;
- mask |= MC13892_SWITCHERS0_SWxHI;
}
}
@@ -535,7 +535,7 @@ static int mc13892_regulator_probe(struct platform_device *pdev)
struct mc13xxx_regulator_init_data *mc13xxx_data;
struct regulator_config config = { };
int i, ret;
- int num_regulators = 0, num_parsed;
+ int num_regulators = 0;
u32 val;
num_regulators = mc13xxx_get_num_regulators_dt(pdev);
@@ -545,8 +545,6 @@ static int mc13892_regulator_probe(struct platform_device *pdev)
if (num_regulators <= 0)
return -EINVAL;
- num_parsed = num_regulators;
-
priv = devm_kzalloc(&pdev->dev, sizeof(*priv) +
num_regulators * sizeof(priv->regulators[0]),
GFP_KERNEL);
@@ -589,40 +587,9 @@ static int mc13892_regulator_probe(struct platform_device *pdev)
= mc13892_vcam_get_mode;
mc13xxx_data = mc13xxx_parse_regulators_dt(pdev, mc13892_regulators,
- ARRAY_SIZE(mc13892_regulators),
- &num_parsed);
-
- /*
- * Perform a little sanity check on the regulator tree - if we found
- * a number of regulators from mc13xxx_get_num_regulators_dt and
- * then parsed a smaller number in mc13xxx_parse_regulators_dt then
- * there is a regulator defined in the regulators node which has
- * not matched any usable regulator in the driver. In this case,
- * there is one missing and what will happen is the first regulator
- * will get registered again.
- *
- * Fix this by basically making our number of registerable regulators
- * equal to the number of regulators we parsed. We are allocating
- * too much memory for priv, but this is unavoidable at this point.
- *
- * As an example of how this can happen, try making a typo in your
- * regulators node (vviohi {} instead of viohi {}) so that the name
- * does not match..
- *
- * The check will basically pass for platform data (non-DT) because
- * mc13xxx_parse_regulators_dt for !CONFIG_OF will not touch num_parsed.
- *
- */
- if (num_parsed != num_regulators) {
- dev_warn(&pdev->dev,
- "parsed %d != regulators %d - check your device tree!\n",
- num_parsed, num_regulators);
-
- num_regulators = num_parsed;
- priv->num_regulators = num_regulators;
- }
+ ARRAY_SIZE(mc13892_regulators));
- for (i = 0; i < num_regulators; i++) {
+ for (i = 0; i < priv->num_regulators; i++) {
struct regulator_init_data *init_data;
struct regulator_desc *desc;
struct device_node *node = NULL;
diff --git a/drivers/regulator/mc13xxx-regulator-core.c b/drivers/regulator/mc13xxx-regulator-core.c
index 23cf9f9c383b..da4859282302 100644
--- a/drivers/regulator/mc13xxx-regulator-core.c
+++ b/drivers/regulator/mc13xxx-regulator-core.c
@@ -180,15 +180,13 @@ EXPORT_SYMBOL_GPL(mc13xxx_get_num_regulators_dt);
struct mc13xxx_regulator_init_data *mc13xxx_parse_regulators_dt(
struct platform_device *pdev, struct mc13xxx_regulator *regulators,
- int num_regulators, int *num_parsed)
+ 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;
- *num_parsed = 0;
-
of_node_get(pdev->dev.parent->of_node);
parent = of_find_node_by_name(pdev->dev.parent->of_node, "regulators");
if (!parent)
@@ -204,10 +202,13 @@ struct mc13xxx_regulator_init_data *mc13xxx_parse_regulators_dt(
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);
@@ -215,13 +216,19 @@ struct mc13xxx_regulator_init_data *mc13xxx_parse_regulators_dt(
p++;
parsed++;
+ found = 1;
break;
}
}
+
+ if (!found)
+ dev_warn(&pdev->dev,
+ "Unknown regulator: %s\n", child->name);
}
of_node_put(parent);
- *num_parsed = parsed;
+ priv->num_regulators = parsed;
+
return data;
}
EXPORT_SYMBOL_GPL(mc13xxx_parse_regulators_dt);
diff --git a/drivers/regulator/mc13xxx.h b/drivers/regulator/mc13xxx.h
index 007f83387fd6..06c8903f182a 100644
--- a/drivers/regulator/mc13xxx.h
+++ b/drivers/regulator/mc13xxx.h
@@ -39,7 +39,7 @@ extern int mc13xxx_fixed_regulator_set_voltage(struct regulator_dev *rdev,
extern int mc13xxx_get_num_regulators_dt(struct platform_device *pdev);
extern struct mc13xxx_regulator_init_data *mc13xxx_parse_regulators_dt(
struct platform_device *pdev, struct mc13xxx_regulator *regulators,
- int num_regulators, int *num_parsed);
+ int num_regulators);
#else
static inline int mc13xxx_get_num_regulators_dt(struct platform_device *pdev)
{
@@ -48,7 +48,7 @@ static inline int mc13xxx_get_num_regulators_dt(struct platform_device *pdev)
static inline struct mc13xxx_regulator_init_data *mc13xxx_parse_regulators_dt(
struct platform_device *pdev, struct mc13xxx_regulator *regulators,
- int num_regulators, int *num_parsed)
+ int num_regulators)
{
return NULL;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-17 06:25:31 +0000