diff mbox series

[2/4] power: regulator: Support pmic pf5300

Message ID 20240930035531.27079-2-peng.fan@oss.nxp.com
State Changes Requested
Delegated to: Tom Rini
Headers show
Series [1/4] power: pmic: Support pmic pf5300 | expand

Commit Message

Peng Fan (OSS) Sept. 30, 2024, 3:55 a.m. UTC
From: Joy Zou <joy.zou@nxp.com>

Add regulator support for NXP pmic pf5300.

Signed-off-by: Joy Zou <joy.zou@nxp.com>
Reviewed-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 drivers/power/regulator/Kconfig  |  15 ++
 drivers/power/regulator/Makefile |   1 +
 drivers/power/regulator/pf5300.c | 247 +++++++++++++++++++++++++++++++
 3 files changed, 263 insertions(+)
 create mode 100644 drivers/power/regulator/pf5300.c
diff mbox series

Patch

diff --git a/drivers/power/regulator/Kconfig b/drivers/power/regulator/Kconfig
index b2f487b050b..69dfb07df50 100644
--- a/drivers/power/regulator/Kconfig
+++ b/drivers/power/regulator/Kconfig
@@ -111,6 +111,21 @@  config SPL_DM_REGULATOR_PF0900
 	This config enables implementation of driver-model regulator uclass
 	features for regulators on ROHM PF0900 in SPL.
 
+config DM_REGULATOR_PF5300
+	bool "Enable Driver Model for NXP PF5300 regulators"
+	depends on DM_REGULATOR && DM_PMIC_PF5300
+	help
+	This config enables implementation of driver-model regulator uclass
+	features for regulators on NXP PF5300 PMICs. PF5300 contains 1 sw.
+	The driver implements get/set api for value and enable.
+
+config SPL_DM_REGULATOR_PF5300
+	bool "Enable Driver Model for NXP PF5300 regulators in SPL"
+	depends on DM_REGULATOR_PF0900 && SPL
+	help
+	This config enables implementation of driver-model regulator uclass
+	features for regulators on ROHM PF5300 in SPL.
+
 config DM_REGULATOR_DA9063
 	bool "Enable Driver Model for REGULATOR DA9063"
 	depends on DM_REGULATOR && DM_PMIC_DA9063
diff --git a/drivers/power/regulator/Makefile b/drivers/power/regulator/Makefile
index a49700dfd25..7a580d45b72 100644
--- a/drivers/power/regulator/Makefile
+++ b/drivers/power/regulator/Makefile
@@ -17,6 +17,7 @@  obj-$(CONFIG_$(SPL_)DM_PMIC_PFUZE100) += pfuze100.o
 obj-$(CONFIG_$(SPL_)DM_REGULATOR_BD71837) += bd71837.o
 obj-$(CONFIG_$(SPL_)DM_REGULATOR_PCA9450) += pca9450.o
 obj-$(CONFIG_$(SPL_)DM_REGULATOR_PF0900) += pf0900.o
+obj-$(CONFIG_$(SPL_)DM_REGULATOR_PF5300) += pf5300.o
 obj-$(CONFIG_$(SPL_)REGULATOR_PWM) += pwm_regulator.o
 obj-$(CONFIG_$(SPL_)DM_REGULATOR_FAN53555) += fan53555.o
 obj-$(CONFIG_$(SPL_)DM_REGULATOR_COMMON) += regulator_common.o
diff --git a/drivers/power/regulator/pf5300.c b/drivers/power/regulator/pf5300.c
new file mode 100644
index 00000000000..6df24934e09
--- /dev/null
+++ b/drivers/power/regulator/pf5300.c
@@ -0,0 +1,247 @@ 
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * NXP PF5300 regulator driver
+ * Copyright 2023 NXP
+ */
+
+#include <dm.h>
+#include <errno.h>
+#include <log.h>
+#include <linux/bitops.h>
+#include <power/pf5300.h>
+#include <power/pmic.h>
+#include <power/regulator.h>
+
+/**
+ * struct pf5300_vrange - describe linear range of voltages
+ *
+ * @min_volt:	smallest voltage in range
+ * @step:	how much voltage changes at each selector step
+ * @min_sel:	smallest selector in the range
+ * @max_sel:	maximum selector in the range
+ */
+struct pf5300_vrange {
+	unsigned int	min_volt;
+	u8		min_sel;
+	u8		max_sel;
+	unsigned int	step;
+};
+
+/**
+ * struct pf5300_plat - describe regulator control registers
+ *
+ * @name:	name of the regulator. Used for matching the dt-entry
+ * @enable_reg:	register address used to enable/disable regulator
+ * @enablemask:	register mask used to enable/disable regulator
+ * @volt_reg:	register address used to configure regulator voltage
+ * @volt_mask:	register mask used to configure regulator voltage
+ * @ranges:	pointer to ranges of regulator voltages and matching register
+ *		values
+ * @numranges:	number of voltage ranges pointed by ranges
+ */
+struct pf5300_plat {
+	const char		*name;
+	u8			enable_reg;
+	u8			enablemask;
+	u8			volt_reg;
+	u8			volt_mask;
+	struct pf5300_vrange	*ranges;
+	unsigned int		numranges;
+};
+
+#define PCA_RANGE(_min, _sel_low, _sel_hi, _vstep) \
+{ \
+	.min_volt = (_min), .min_sel = (_sel_low), \
+	.max_sel = (_sel_hi), .step = (_vstep),\
+}
+
+#define PCA_DATA(_name, enreg, enmask, vreg, vmask, _range) \
+{ \
+	.name = (_name), .enable_reg = (enreg), .enablemask = (enmask), \
+	.volt_reg = (vreg), .volt_mask = (vmask), .ranges = (_range), \
+	.numranges = ARRAY_SIZE(_range) \
+}
+
+static struct pf5300_vrange pf5300_sw1_vranges[] = {
+	PCA_RANGE(500000,  0x00, 0x8C, 5000),
+	PCA_RANGE(0,       0x8D, 0xFF, 0),
+};
+
+static struct pf5300_plat pf5301_reg_data[] = {
+	PCA_DATA("SW1_2a", PF5300_REG_SW1_CTRL1, SW_MODE_PWM,
+		 PF5300_REG_SW1_VOLT, SW1_VOLT_MASK,
+		 pf5300_sw1_vranges),
+};
+
+static struct pf5300_plat pf5302_reg_data[] = {
+	PCA_DATA("SW1_29", PF5300_REG_SW1_CTRL1, SW_MODE_PWM,
+		 PF5300_REG_SW1_VOLT, SW1_VOLT_MASK,
+		 pf5300_sw1_vranges),
+};
+
+static int vrange_find_value(struct pf5300_vrange *r, unsigned int sel,
+			     unsigned int *val)
+{
+	if (!val || sel < r->min_sel || sel > r->max_sel)
+		return -EINVAL;
+
+	*val = r->min_volt + r->step * (sel - r->min_sel);
+	return 0;
+}
+
+static int vrange_find_selector(struct pf5300_vrange *r, int val,
+				unsigned int *sel)
+{
+	int ret = -EINVAL;
+	int num_vals = r->max_sel - r->min_sel + 1;
+
+	if (val >= r->min_volt &&
+	    val <= r->min_volt + r->step * (num_vals - 1)) {
+		if (r->step) {
+			*sel = r->min_sel + ((val - r->min_volt) / r->step);
+			ret = 0;
+		} else {
+			*sel = r->min_sel;
+			ret = 0;
+		}
+	}
+	return ret;
+}
+
+static int pf5300_get_enable(struct udevice *dev)
+{
+	struct pf5300_plat *plat = dev_get_plat(dev);
+	int val;
+
+	val = pmic_reg_read(dev->parent, plat->enable_reg);
+	if (val < 0)
+		return val;
+
+	return (val & plat->enablemask);
+}
+
+static int pf5300_set_enable(struct udevice *dev, bool enable)
+{
+	int val = 0;
+	int tmp = 0;
+	struct pf5300_plat *plat = dev_get_plat(dev);
+
+	if (enable)
+		tmp = plat->enablemask;
+	val = pmic_reg_read(dev->parent, plat->enable_reg);
+	if (tmp < 0)
+		return tmp;
+	val = (tmp & plat->enablemask) | (val & (~plat->enablemask));
+
+	return pmic_reg_write(dev->parent, plat->enable_reg, val);
+}
+
+static int pf5300_get_value(struct udevice *dev)
+{
+	struct pf5300_plat *plat = dev_get_plat(dev);
+	unsigned int reg, tmp;
+	int i, ret;
+
+	ret = pmic_reg_read(dev->parent, plat->volt_reg);
+	if (ret < 0)
+		return ret;
+
+	reg = ret;
+	reg &= plat->volt_mask;
+
+	for (i = 0; i < plat->numranges; i++) {
+		struct pf5300_vrange *r = &plat->ranges[i];
+
+		if (!vrange_find_value(r, reg, &tmp))
+			return tmp;
+	}
+
+	pr_err("Unknown voltage value read from pmic\n");
+
+	return -EINVAL;
+}
+
+static int pf5300_set_value(struct udevice *dev, int uvolt)
+{
+	struct pf5300_plat *plat = dev_get_plat(dev);
+	unsigned int sel;
+	int i, val, found = 0;
+
+	for (i = 0; i < plat->numranges; i++) {
+		struct pf5300_vrange *r = &plat->ranges[i];
+
+		found = !vrange_find_selector(r, uvolt, &sel);
+		if (found) {
+			unsigned int tmp;
+
+			/*
+			 * We require exactly the requested value to be
+			 * supported - this can be changed later if needed
+			 */
+			found = !vrange_find_value(r, sel, &tmp);
+			if (found && tmp == uvolt)
+				break;
+			found = 0;
+		}
+	}
+
+	if (!found)
+		return -EINVAL;
+
+	val = pmic_reg_read(dev->parent, plat->volt_reg);
+	if (val < 0)
+		return val;
+	val = (sel & plat->volt_mask) | (val & (~plat->volt_mask));
+	return pmic_reg_write(dev->parent, plat->volt_reg, val);
+}
+
+static int pf5300_regulator_probe(struct udevice *dev)
+{
+	struct pf5300_plat *plat = dev_get_plat(dev);
+	int i, type;
+
+	type = dev_get_driver_data(dev_get_parent(dev));
+
+	if (type != PF5300_TYPE_PF5300 && type != PF5300_TYPE_PF5301 &&
+	    type != PF5300_TYPE_PF5302) {
+		debug("Unknown PMIC type\n");
+		return -EINVAL;
+	}
+
+	if (type == PF5300_TYPE_PF5301) {
+		for (i = 0; i < ARRAY_SIZE(pf5301_reg_data); i++) {
+			if (strcmp(dev->name, pf5301_reg_data[i].name))
+				continue;
+			*plat = pf5301_reg_data[i];
+
+			return 0;
+		}
+	} else if (type == PF5300_TYPE_PF5302) {
+		for (i = 0; i < ARRAY_SIZE(pf5302_reg_data); i++) {
+			if (strcmp(dev->name, pf5302_reg_data[i].name))
+				continue;
+			*plat = pf5301_reg_data[i];
+
+			return 0;
+		}
+	}
+
+	pr_err("Unknown regulator '%s'\n", dev->name);
+
+	return -ENOENT;
+}
+
+static const struct dm_regulator_ops pf5300_regulator_ops = {
+	.get_value	= pf5300_get_value,
+	.set_value	= pf5300_set_value,
+	.get_enable	= pf5300_get_enable,
+	.set_enable	= pf5300_set_enable,
+};
+
+U_BOOT_DRIVER(pf5300_regulator) = {
+	.name		= PF5300_REGULATOR_DRIVER,
+	.id		= UCLASS_REGULATOR,
+	.ops		= &pf5300_regulator_ops,
+	.probe		= pf5300_regulator_probe,
+	.plat_auto	= sizeof(struct pf5300_plat),
+};