Merge remote-tracking branches 'regulator/topic/bcm590xx',...

Merge remote-tracking branches 'regulator/topic/bcm590xx', 'regulator/topic/da9052', 'regulator/topic/da9055', 'regulator/topic/da9063', 'regulator/topic/da9210', 'regulator/topic/db8500' and 'regulator/topic/dbx500' into regulator-next

drivers/regulator/Kconfig

@@ -139,6 +139,14 @@ config REGULATOR_AS3722
 	  AS3722 PMIC. This will enable support for all the software
 	  controllable DCDC/LDO regulators.
 
+config REGULATOR_BCM590XX
+	tristate "Broadcom BCM590xx PMU Regulators"
+	depends on MFD_BCM590XX
+	help
+	  This driver provides support for the voltage regulators on the
+	  BCM590xx PMUs. This will enable support for the software
+	  controllable LDO/Switching regulators.
+
 config REGULATOR_DA903X
 	tristate "Dialog Semiconductor DA9030/DA9034 regulators"
 	depends on PMIC_DA903X

drivers/regulator/Makefile

@@ -20,6 +20,7 @@ obj-$(CONFIG_REGULATOR_ANATOP) += anatop-regulator.o
 obj-$(CONFIG_REGULATOR_ARIZONA) += arizona-micsupp.o arizona-ldo1.o
 obj-$(CONFIG_REGULATOR_AS3711) += as3711-regulator.o
 obj-$(CONFIG_REGULATOR_AS3722) += as3722-regulator.o
+obj-$(CONFIG_REGULATOR_BCM590XX) += bcm590xx-regulator.o
 obj-$(CONFIG_REGULATOR_DA903X)	+= da903x.o
 obj-$(CONFIG_REGULATOR_DA9052)	+= da9052-regulator.o
 obj-$(CONFIG_REGULATOR_DA9055)	+= da9055-regulator.o

drivers/regulator/da9052-regulator.c

@@ -240,6 +240,31 @@ static int da9052_regulator_set_voltage_sel(struct regulator_dev *rdev,
 	return ret;
 }
 
+static int da9052_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
+						 unsigned int old_sel,
+						 unsigned int new_sel)
+{
+	struct da9052_regulator *regulator = rdev_get_drvdata(rdev);
+	struct da9052_regulator_info *info = regulator->info;
+	int id = rdev_get_id(rdev);
+	int ret = 0;
+
+	/* The DVC controlled LDOs and DCDCs ramp with 6.25mV/µs after enabling
+	 * the activate bit.
+	 */
+	switch (id) {
+	case DA9052_ID_BUCK1:
+	case DA9052_ID_BUCK2:
+	case DA9052_ID_BUCK3:
+	case DA9052_ID_LDO2:
+	case DA9052_ID_LDO3:
+		ret = (new_sel - old_sel) * info->step_uV / 6250;
+		break;
+	}
+
+	return ret;
+}
+
 static struct regulator_ops da9052_dcdc_ops = {
 	.get_current_limit = da9052_dcdc_get_current_limit,
 	.set_current_limit = da9052_dcdc_set_current_limit,
@@ -248,6 +273,7 @@ static struct regulator_ops da9052_dcdc_ops = {
 	.map_voltage = da9052_map_voltage,
 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
 	.set_voltage_sel = da9052_regulator_set_voltage_sel,
+	.set_voltage_time_sel = da9052_regulator_set_voltage_time_sel,
 	.is_enabled = regulator_is_enabled_regmap,
 	.enable = regulator_enable_regmap,
 	.disable = regulator_disable_regmap,
@@ -258,6 +284,7 @@ static struct regulator_ops da9052_ldo_ops = {
 	.map_voltage = da9052_map_voltage,
 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
 	.set_voltage_sel = da9052_regulator_set_voltage_sel,
+	.set_voltage_time_sel = da9052_regulator_set_voltage_time_sel,
 	.is_enabled = regulator_is_enabled_regmap,
 	.enable = regulator_enable_regmap,
 	.disable = regulator_disable_regmap,
@@ -401,7 +428,7 @@ static int da9052_regulator_probe(struct platform_device *pdev)
 		if (!nproot)
 			return -ENODEV;
 
-		nproot = of_find_node_by_name(nproot, "regulators");
+		nproot = of_get_child_by_name(nproot, "regulators");
 		if (!nproot)
 			return -ENODEV;
 

drivers/regulator/da9055-regulator.c

@@ -19,6 +19,8 @@
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
+#include <linux/of.h>
+#include <linux/regulator/of_regulator.h>
 
 #include <linux/mfd/da9055/core.h>
 #include <linux/mfd/da9055/reg.h>
@@ -446,6 +448,9 @@ static int da9055_gpio_init(struct da9055_regulator *regulator,
 	struct da9055_regulator_info *info = regulator->info;
 	int ret = 0;
 
+	if (!pdata)
+		return 0;
+
 	if (pdata->gpio_ren && pdata->gpio_ren[id]) {
 		char name[18];
 		int gpio_mux = pdata->gpio_ren[id];
@@ -530,6 +535,59 @@ static inline struct da9055_regulator_info *find_regulator_info(int id)
 	return NULL;
 }
 
+#ifdef CONFIG_OF
+static struct of_regulator_match da9055_reg_matches[] = {
+	{ .name = "BUCK1", },
+	{ .name = "BUCK2", },
+	{ .name = "LDO1", },
+	{ .name = "LDO2", },
+	{ .name = "LDO3", },
+	{ .name = "LDO4", },
+	{ .name = "LDO5", },
+	{ .name = "LDO6", },
+};
+
+static int da9055_regulator_dt_init(struct platform_device *pdev,
+				    struct da9055_regulator *regulator,
+				    struct regulator_config *config,
+				    int regid)
+{
+	struct device_node *nproot, *np;
+	int ret;
+
+	nproot = of_node_get(pdev->dev.parent->of_node);
+	if (!nproot)
+		return -ENODEV;
+
+	np = of_get_child_by_name(nproot, "regulators");
+	if (!np)
+		return -ENODEV;
+
+	ret = of_regulator_match(&pdev->dev, np, &da9055_reg_matches[regid], 1);
+	of_node_put(nproot);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Error matching regulator: %d\n", ret);
+		return ret;
+	}
+
+	config->init_data = da9055_reg_matches[regid].init_data;
+	config->of_node = da9055_reg_matches[regid].of_node;
+
+	if (!config->of_node)
+		return -ENODEV;
+
+	return 0;
+}
+#else
+static inline int da9055_regulator_dt_init(struct platform_device *pdev,
+				       struct da9055_regulator *regulator,
+				       struct regulator_config *config,
+				       int regid)
+{
+	return -ENODEV;
+}
+#endif /* CONFIG_OF */
+
 static int da9055_regulator_probe(struct platform_device *pdev)
 {
 	struct regulator_config config = { };
@@ -538,9 +596,6 @@ static int da9055_regulator_probe(struct platform_device *pdev)
 	struct da9055_pdata *pdata = dev_get_platdata(da9055->dev);
 	int ret, irq;
 
-	if (pdata == NULL || pdata->regulators[pdev->id] == NULL)
-		return -ENODEV;
-
 	regulator = devm_kzalloc(&pdev->dev, sizeof(struct da9055_regulator),
 				 GFP_KERNEL);
 	if (!regulator)
@@ -557,8 +612,14 @@ static int da9055_regulator_probe(struct platform_device *pdev)
 	config.driver_data = regulator;
 	config.regmap = da9055->regmap;
 
-	if (pdata && pdata->regulators)
+	if (pdata && pdata->regulators) {
 		config.init_data = pdata->regulators[pdev->id];
+	} else {
+		ret = da9055_regulator_dt_init(pdev, regulator, &config,
+					       pdev->id);
+		if (ret < 0)
+			return ret;
+	}
 
 	ret = da9055_gpio_init(regulator, &config, pdata, pdev->id);
 	if (ret < 0)

drivers/regulator/da9063-regulator.c

@@ -365,7 +365,7 @@ static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV)
 
 	sel = regulator_map_voltage_linear(rdev, uV, uV);
 	if (sel < 0)
-		return -EINVAL;
+		return sel;
 
 	sel <<= ffs(rdev->desc->vsel_mask) - 1;
 
@@ -666,7 +666,7 @@ static struct da9063_regulators_pdata *da9063_parse_regulators_dt(
 	struct device_node *node;
 	int i, n, num;
 
-	node = of_find_node_by_name(pdev->dev.parent->of_node, "regulators");
+	node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
 	if (!node) {
 		dev_err(&pdev->dev, "Regulators device node not found\n");
 		return ERR_PTR(-ENODEV);
@@ -674,6 +674,7 @@ static struct da9063_regulators_pdata *da9063_parse_regulators_dt(
 
 	num = of_regulator_match(&pdev->dev, node, da9063_matches,
 				 ARRAY_SIZE(da9063_matches));
+	of_node_put(node);
 	if (num < 0) {
 		dev_err(&pdev->dev, "Failed to match regulators\n");
 		return ERR_PTR(-EINVAL);
@@ -710,7 +711,7 @@ static struct da9063_regulators_pdata *da9063_parse_regulators_dt(
 		struct platform_device *pdev,
 		struct of_regulator_match **da9063_reg_matches)
 {
-	da9063_reg_matches = NULL;
+	*da9063_reg_matches = NULL;
 	return ERR_PTR(-ENODEV);
 }
 #endif
@@ -756,7 +757,7 @@ static int da9063_regulator_probe(struct platform_device *pdev)
 	if (ret < 0) {
 		dev_err(&pdev->dev,
 			"Error while reading BUCKs configuration\n");
-		return -EIO;
+		return ret;
 	}
 	bcores_merged = val & DA9063_BCORE_MERGE;
 	bmem_bio_merged = val & DA9063_BUCK_MERGE;
@@ -775,10 +776,8 @@ static int da9063_regulator_probe(struct platform_device *pdev)
 	size = sizeof(struct da9063_regulators) +
 		n_regulators * sizeof(struct da9063_regulator);
 	regulators = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
-	if (!regulators) {
-		dev_err(&pdev->dev, "No memory for regulators\n");
+	if (!regulators)
 		return -ENOMEM;
-	}
 
 	regulators->n_regulators = n_regulators;
 	platform_set_drvdata(pdev, regulators);

drivers/regulator/da9210-regulator.c

@@ -134,11 +134,8 @@ static int da9210_i2c_probe(struct i2c_client *i2c,
 	int error;
 
 	chip = devm_kzalloc(&i2c->dev, sizeof(struct da9210), GFP_KERNEL);
-	if (NULL == chip) {
-		dev_err(&i2c->dev,
-			"Cannot kzalloc memory for regulator structure\n");
+	if (!chip)
 		return -ENOMEM;
-	}
 
 	chip->regmap = devm_regmap_init_i2c(i2c, &da9210_regmap_config);
 	if (IS_ERR(chip->regmap)) {

drivers/regulator/db8500-prcmu.c

@@ -263,6 +263,8 @@ dbx500_regulator_info[DB8500_NUM_REGULATORS] = {
 			.ops	= &db8500_regulator_ops,
 			.type	= REGULATOR_VOLTAGE,
 			.owner	= THIS_MODULE,
+			.fixed_uV = 1800000,
+			.n_voltages = 1,
 		},
 		.exclude_from_power_state = true,
 	},

drivers/regulator/dbx500-prcmu.c

@@ -78,6 +78,7 @@ static struct ux500_regulator_debug {
 void ux500_regulator_suspend_debug(void)
 {
 	int i;
+
 	for (i = 0; i < rdebug.num_regulators; i++)
 		rdebug.state_before_suspend[i] =
 			rdebug.regulator_array[i].is_enabled;
@@ -86,6 +87,7 @@ void ux500_regulator_suspend_debug(void)
 void ux500_regulator_resume_debug(void)
 {
 	int i;
+
 	for (i = 0; i < rdebug.num_regulators; i++)
 		rdebug.state_after_suspend[i] =
 			rdebug.regulator_array[i].is_enabled;
@@ -127,9 +129,9 @@ static int ux500_regulator_status_print(struct seq_file *s, void *p)
 	int i;
 
 	/* print dump header */
-	err = seq_printf(s, "ux500-regulator status:\n");
+	err = seq_puts(s, "ux500-regulator status:\n");
 	if (err < 0)
-		dev_err(dev, "seq_printf overflow\n");
+		dev_err(dev, "seq_puts overflow\n");
 
 	err = seq_printf(s, "%31s : %8s : %8s\n", "current",
 		"before", "after");
@@ -202,18 +204,12 @@ ux500_regulator_debug_init(struct platform_device *pdev,
 	rdebug.num_regulators = num_regulators;
 
 	rdebug.state_before_suspend = kzalloc(num_regulators, GFP_KERNEL);
-	if (!rdebug.state_before_suspend) {
-		dev_err(&pdev->dev,
-			"could not allocate memory for saving state\n");
+	if (!rdebug.state_before_suspend)
 		goto exit_destroy_power_state;
-	}
 
 	rdebug.state_after_suspend = kzalloc(num_regulators, GFP_KERNEL);
-	if (!rdebug.state_after_suspend) {
-		dev_err(&pdev->dev,
-			"could not allocate memory for saving state\n");
+	if (!rdebug.state_after_suspend)
 		goto exit_free;
-	}
 
 	dbx500_regulator_testcase(regulator_info, num_regulators);
 	return 0;