regulator: Add TPS65090 regulator driver

Add TPS65090 regulator driver TPS65090 PMIC from TI consists of 3 step down converters, 2 always on LDOs and 7 current limited load switches. The output voltages are ON/OFF controllable and are meant to supply power to the components on target board. Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

regulator: Add TPS65090 regulator driver
Add TPS65090 regulator driver TPS65090 PMIC from TI consists of 3 step down converters, 2 always on LDOs and 7 current limited load switches. The output voltages are ON/OFF controllable and are meant to supply power to the components on target board. Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Venu Byravarasu · Mark Brown
1 parent 4dbd8f63f0
Showing 4 changed files with 255 additions and 0 deletions Side-by-side Diff
drivers/regulator/Kconfig
drivers/regulator/Makefile
drivers/regulator/tps65090-regulator.c
include/linux/regulator/tps65090-regulator.h
@@ -294,6 +294,13 @@
 	  three step-down converters and two general-purpose LDO voltage regulators.
 	  It supports TI's software based Class-2 SmartReflex implementation.
  
+config REGULATOR_TPS65090
+	tristate "TI TPS65090 Power regulator"
+	depends on MFD_TPS65090
+	help
+	  This driver provides support for the voltage regulators on the
+	  TI TPS65090 PMIC.
+
 config REGULATOR_TPS65217
 	tristate "TI TPS65217 Power regulators"
 	depends on MFD_TPS65217
@@ -40,6 +40,7 @@
 obj-$(CONFIG_REGULATOR_TPS62360) += tps62360-regulator.o
 obj-$(CONFIG_REGULATOR_TPS65023) += tps65023-regulator.o
 obj-$(CONFIG_REGULATOR_TPS6507X) += tps6507x-regulator.o
+obj-$(CONFIG_REGULATOR_TPS65090) += tps65090-regulator.o
 obj-$(CONFIG_REGULATOR_TPS65217) += tps65217-regulator.o
 obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o
 obj-$(CONFIG_REGULATOR_TPS6586X) += tps6586x-regulator.o
+/*
+ * Regulator driver for tps65090 power management chip.
+ *
+ * Copyright (c) 2012, NVIDIA CORPORATION.  All rights reserved.
+
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/mfd/tps65090.h>
+#include <linux/regulator/tps65090-regulator.h>
+
+struct tps65090_regulator {
+	int		id;
+	/* Regulator register address.*/
+	u8		reg_en_reg;
+	u8		en_bit;
+
+	/* used by regulator core */
+	struct regulator_desc	desc;
+
+	/* Device */
+	struct device		*dev;
+};
+
+static inline struct device *to_tps65090_dev(struct regulator_dev *rdev)
+{
+	return rdev_get_dev(rdev)->parent->parent;
+}
+
+static int tps65090_reg_is_enabled(struct regulator_dev *rdev)
+{
+	struct tps65090_regulator *ri = rdev_get_drvdata(rdev);
+	struct device *parent = to_tps65090_dev(rdev);
+	uint8_t control;
+	int ret;
+
+	ret = tps65090_read(parent, ri->reg_en_reg, &control);
+	if (ret < 0) {
+		dev_err(&rdev->dev, "Error in reading reg 0x%x\n",
+			ri->reg_en_reg);
+		return ret;
+	}
+	return (((control >> ri->en_bit) & 1) == 1);
+}
+
+static int tps65090_reg_enable(struct regulator_dev *rdev)
+{
+	struct tps65090_regulator *ri = rdev_get_drvdata(rdev);
+	struct device *parent = to_tps65090_dev(rdev);
+	int ret;
+
+	ret = tps65090_set_bits(parent, ri->reg_en_reg, ri->en_bit);
+	if (ret < 0)
+		dev_err(&rdev->dev, "Error in updating reg 0x%x\n",
+			ri->reg_en_reg);
+	return ret;
+}
+
+static int tps65090_reg_disable(struct regulator_dev *rdev)
+{
+	struct tps65090_regulator *ri = rdev_get_drvdata(rdev);
+	struct device *parent = to_tps65090_dev(rdev);
+	int ret;
+
+	ret = tps65090_clr_bits(parent, ri->reg_en_reg, ri->en_bit);
+	if (ret < 0)
+		dev_err(&rdev->dev, "Error in updating reg 0x%x\n",
+			ri->reg_en_reg);
+
+	return ret;
+}
+
+static struct regulator_ops tps65090_ops = {
+	.enable		= tps65090_reg_enable,
+	.disable	= tps65090_reg_disable,
+	.is_enabled	= tps65090_reg_is_enabled,
+};
+
+#define tps65090_REG(_id, _en_reg, _en_bit, _ops)	\
+{							\
+	.reg_en_reg	= _en_reg,			\
+	.en_bit		= _en_bit,			\
+	.id		= TPS65090_ID_##_id,		\
+	.desc = {					\
+		.name = tps65090_rails(_id),		\
+		.id = TPS65090_ID_##_id,		\
+		.ops = &_ops,				\
+		.type = REGULATOR_VOLTAGE,		\
+		.owner = THIS_MODULE,			\
+	},						\
+}
+
+static struct tps65090_regulator TPS65090_regulator[] = {
+	tps65090_REG(DCDC1, 12, 0, tps65090_ops),
+	tps65090_REG(DCDC2, 13, 0, tps65090_ops),
+	tps65090_REG(DCDC3, 14, 0, tps65090_ops),
+	tps65090_REG(FET1,  15, 0, tps65090_ops),
+	tps65090_REG(FET2,  16, 0, tps65090_ops),
+	tps65090_REG(FET3,  17, 0, tps65090_ops),
+	tps65090_REG(FET4,  18, 0, tps65090_ops),
+	tps65090_REG(FET5,  19, 0, tps65090_ops),
+	tps65090_REG(FET6,  20, 0, tps65090_ops),
+	tps65090_REG(FET7,  21, 0, tps65090_ops),
+};
+
+static inline struct tps65090_regulator *find_regulator_info(int id)
+{
+	struct tps65090_regulator *ri;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(TPS65090_regulator); i++) {
+		ri = &TPS65090_regulator[i];
+		if (ri->desc.id == id)
+			return ri;
+	}
+	return NULL;
+}
+
+static int __devinit tps65090_regulator_probe(struct platform_device *pdev)
+{
+	struct tps65090_regulator *ri = NULL;
+	struct regulator_dev *rdev;
+	struct tps65090_regulator_platform_data *tps_pdata;
+	int id = pdev->id;
+
+	dev_dbg(&pdev->dev, "Probing regulator %d\n", id);
+
+	ri = find_regulator_info(id);
+	if (ri == NULL) {
+		dev_err(&pdev->dev, "invalid regulator ID specified\n");
+		return -EINVAL;
+	}
+	tps_pdata = pdev->dev.platform_data;
+	ri->dev = &pdev->dev;
+
+	rdev = regulator_register(&ri->desc, &pdev->dev,
+				&tps_pdata->regulator, ri, NULL);
+	if (IS_ERR_OR_NULL(rdev)) {
+		dev_err(&pdev->dev, "failed to register regulator %s\n",
+				ri->desc.name);
+		return PTR_ERR(rdev);
+	}
+
+	platform_set_drvdata(pdev, rdev);
+	return 0;
+}
+
+static int __devexit tps65090_regulator_remove(struct platform_device *pdev)
+{
+	struct regulator_dev *rdev = platform_get_drvdata(pdev);
+
+	regulator_unregister(rdev);
+	return 0;
+}
+
+static struct platform_driver tps65090_regulator_driver = {
+	.driver	= {
+		.name	= "tps65090-regulator",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= tps65090_regulator_probe,
+	.remove		= __devexit_p(tps65090_regulator_remove),
+};
+
+static int __init tps65090_regulator_init(void)
+{
+	return platform_driver_register(&tps65090_regulator_driver);
+}
+subsys_initcall(tps65090_regulator_init);
+
+static void __exit tps65090_regulator_exit(void)
+{
+	platform_driver_unregister(&tps65090_regulator_driver);
+}
+module_exit(tps65090_regulator_exit);
+
+MODULE_DESCRIPTION("tps65090 regulator driver");
+MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>");
+MODULE_LICENSE("GPL v2");
+/*
+ * Regulator driver interface for TI TPS65090 PMIC family
+ *
+ * Copyright (c) 2012, NVIDIA CORPORATION.  All rights reserved.
+
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __REGULATOR_TPS65090_H
+#define __REGULATOR_TPS65090_H
+
+#include <linux/regulator/machine.h>
+
+#define tps65090_rails(_name) "tps65090_"#_name
+
+enum {
+	TPS65090_ID_DCDC1,
+	TPS65090_ID_DCDC2,
+	TPS65090_ID_DCDC3,
+	TPS65090_ID_FET1,
+	TPS65090_ID_FET2,
+	TPS65090_ID_FET3,
+	TPS65090_ID_FET4,
+	TPS65090_ID_FET5,
+	TPS65090_ID_FET6,
+	TPS65090_ID_FET7,
+};
+
+/*
+ * struct tps65090_regulator_platform_data
+ *
+ * @regulator: The regulator init data.
+ * @slew_rate_uV_per_us: Slew rate microvolt per microsec.
+ */
+
+struct tps65090_regulator_platform_data {
+	struct regulator_init_data regulator;
+};
+
+#endif	/* __REGULATOR_TPS65090_H */
...	...	@@ -294,6 +294,13 @@
294	294	three step-down converters and two general-purpose LDO voltage regulators.
295	295	It supports TI's software based Class-2 SmartReflex implementation.
296	296
	297	+config REGULATOR_TPS65090
	298	+ tristate "TI TPS65090 Power regulator"
	299	+ depends on MFD_TPS65090
	300	+ help
	301	+ This driver provides support for the voltage regulators on the
	302	+ TI TPS65090 PMIC.
	303	+
297	304	config REGULATOR_TPS65217
298	305	tristate "TI TPS65217 Power regulators"
299	306	depends on MFD_TPS65217
...	...	@@ -40,6 +40,7 @@
40	40	obj-$(CONFIG_REGULATOR_TPS62360) += tps62360-regulator.o
41	41	obj-$(CONFIG_REGULATOR_TPS65023) += tps65023-regulator.o
42	42	obj-$(CONFIG_REGULATOR_TPS6507X) += tps6507x-regulator.o
	43	+obj-$(CONFIG_REGULATOR_TPS65090) += tps65090-regulator.o
43	44	obj-$(CONFIG_REGULATOR_TPS65217) += tps65217-regulator.o
44	45	obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o
45	46	obj-$(CONFIG_REGULATOR_TPS6586X) += tps6586x-regulator.o
	1	+/*
	2	+ * Regulator driver for tps65090 power management chip.
	3	+ *
	4	+ * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
	5	+
	6	+ * This program is free software; you can redistribute it and/or modify it
	7	+ * under the terms and conditions of the GNU General Public License,
	8	+ * version 2, as published by the Free Software Foundation.
	9	+
	10	+ * This program is distributed in the hope it will be useful, but WITHOUT
	11	+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	12	+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	13	+ * more details.
	14	+
	15	+ * You should have received a copy of the GNU General Public License
	16	+ * along with this program. If not, see <http://www.gnu.org/licenses/>
	17	+ */
	18	+
	19	+#include <linux/module.h>
	20	+#include <linux/delay.h>
	21	+#include <linux/init.h>
	22	+#include <linux/slab.h>
	23	+#include <linux/err.h>
	24	+#include <linux/platform_device.h>
	25	+#include <linux/regulator/driver.h>
	26	+#include <linux/regulator/machine.h>
	27	+#include <linux/mfd/tps65090.h>
	28	+#include <linux/regulator/tps65090-regulator.h>
	29	+
	30	+struct tps65090_regulator {
	31	+ int id;
	32	+ /* Regulator register address.*/
	33	+ u8 reg_en_reg;
	34	+ u8 en_bit;
	35	+
	36	+ /* used by regulator core */
	37	+ struct regulator_desc desc;
	38	+
	39	+ /* Device */
	40	+ struct device *dev;
	41	+};
	42	+
	43	+static inline struct device to_tps65090_dev(struct regulator_dev rdev)
	44	+{
	45	+ return rdev_get_dev(rdev)->parent->parent;
	46	+}
	47	+
	48	+static int tps65090_reg_is_enabled(struct regulator_dev *rdev)
	49	+{
	50	+ struct tps65090_regulator *ri = rdev_get_drvdata(rdev);
	51	+ struct device *parent = to_tps65090_dev(rdev);
	52	+ uint8_t control;
	53	+ int ret;
	54	+
	55	+ ret = tps65090_read(parent, ri->reg_en_reg, &control);
	56	+ if (ret < 0) {
	57	+ dev_err(&rdev->dev, "Error in reading reg 0x%x\n",
	58	+ ri->reg_en_reg);
	59	+ return ret;
	60	+ }
	61	+ return (((control >> ri->en_bit) & 1) == 1);
	62	+}
	63	+
	64	+static int tps65090_reg_enable(struct regulator_dev *rdev)
	65	+{
	66	+ struct tps65090_regulator *ri = rdev_get_drvdata(rdev);
	67	+ struct device *parent = to_tps65090_dev(rdev);
	68	+ int ret;
	69	+
	70	+ ret = tps65090_set_bits(parent, ri->reg_en_reg, ri->en_bit);
	71	+ if (ret < 0)
	72	+ dev_err(&rdev->dev, "Error in updating reg 0x%x\n",
	73	+ ri->reg_en_reg);
	74	+ return ret;
	75	+}
	76	+
	77	+static int tps65090_reg_disable(struct regulator_dev *rdev)
	78	+{
	79	+ struct tps65090_regulator *ri = rdev_get_drvdata(rdev);
	80	+ struct device *parent = to_tps65090_dev(rdev);
	81	+ int ret;
	82	+
	83	+ ret = tps65090_clr_bits(parent, ri->reg_en_reg, ri->en_bit);
	84	+ if (ret < 0)
	85	+ dev_err(&rdev->dev, "Error in updating reg 0x%x\n",
	86	+ ri->reg_en_reg);
	87	+
	88	+ return ret;
	89	+}
	90	+
	91	+static struct regulator_ops tps65090_ops = {
	92	+ .enable = tps65090_reg_enable,
	93	+ .disable = tps65090_reg_disable,
	94	+ .is_enabled = tps65090_reg_is_enabled,
	95	+};
	96	+
	97	+#define tps65090_REG(_id, _en_reg, _en_bit, _ops) \
	98	+{ \
	99	+ .reg_en_reg = _en_reg, \
	100	+ .en_bit = _en_bit, \
	101	+ .id = TPS65090_ID_##_id, \
	102	+ .desc = { \
	103	+ .name = tps65090_rails(_id), \
	104	+ .id = TPS65090_ID_##_id, \
	105	+ .ops = &_ops, \
	106	+ .type = REGULATOR_VOLTAGE, \
	107	+ .owner = THIS_MODULE, \
	108	+ }, \
	109	+}
	110	+
	111	+static struct tps65090_regulator TPS65090_regulator[] = {
	112	+ tps65090_REG(DCDC1, 12, 0, tps65090_ops),
	113	+ tps65090_REG(DCDC2, 13, 0, tps65090_ops),
	114	+ tps65090_REG(DCDC3, 14, 0, tps65090_ops),
	115	+ tps65090_REG(FET1, 15, 0, tps65090_ops),
	116	+ tps65090_REG(FET2, 16, 0, tps65090_ops),
	117	+ tps65090_REG(FET3, 17, 0, tps65090_ops),
	118	+ tps65090_REG(FET4, 18, 0, tps65090_ops),
	119	+ tps65090_REG(FET5, 19, 0, tps65090_ops),
	120	+ tps65090_REG(FET6, 20, 0, tps65090_ops),
	121	+ tps65090_REG(FET7, 21, 0, tps65090_ops),
	122	+};
	123	+
	124	+static inline struct tps65090_regulator *find_regulator_info(int id)
	125	+{
	126	+ struct tps65090_regulator *ri;
	127	+ int i;
	128	+
	129	+ for (i = 0; i < ARRAY_SIZE(TPS65090_regulator); i++) {
	130	+ ri = &TPS65090_regulator[i];
	131	+ if (ri->desc.id == id)
	132	+ return ri;
	133	+ }
	134	+ return NULL;
	135	+}
	136	+
	137	+static int __devinit tps65090_regulator_probe(struct platform_device *pdev)
	138	+{
	139	+ struct tps65090_regulator *ri = NULL;
	140	+ struct regulator_dev *rdev;
	141	+ struct tps65090_regulator_platform_data *tps_pdata;
	142	+ int id = pdev->id;
	143	+
	144	+ dev_dbg(&pdev->dev, "Probing regulator %d\n", id);
	145	+
	146	+ ri = find_regulator_info(id);
	147	+ if (ri == NULL) {
	148	+ dev_err(&pdev->dev, "invalid regulator ID specified\n");
	149	+ return -EINVAL;
	150	+ }
	151	+ tps_pdata = pdev->dev.platform_data;
	152	+ ri->dev = &pdev->dev;
	153	+
	154	+ rdev = regulator_register(&ri->desc, &pdev->dev,
	155	+ &tps_pdata->regulator, ri, NULL);
	156	+ if (IS_ERR_OR_NULL(rdev)) {
	157	+ dev_err(&pdev->dev, "failed to register regulator %s\n",
	158	+ ri->desc.name);
	159	+ return PTR_ERR(rdev);
	160	+ }
	161	+
	162	+ platform_set_drvdata(pdev, rdev);
	163	+ return 0;
	164	+}
	165	+
	166	+static int __devexit tps65090_regulator_remove(struct platform_device *pdev)
	167	+{
	168	+ struct regulator_dev *rdev = platform_get_drvdata(pdev);
	169	+
	170	+ regulator_unregister(rdev);
	171	+ return 0;
	172	+}
	173	+
	174	+static struct platform_driver tps65090_regulator_driver = {
	175	+ .driver = {
	176	+ .name = "tps65090-regulator",
	177	+ .owner = THIS_MODULE,
	178	+ },
	179	+ .probe = tps65090_regulator_probe,
	180	+ .remove = __devexit_p(tps65090_regulator_remove),
	181	+};
	182	+
	183	+static int __init tps65090_regulator_init(void)
	184	+{
	185	+ return platform_driver_register(&tps65090_regulator_driver);
	186	+}
	187	+subsys_initcall(tps65090_regulator_init);
	188	+
	189	+static void __exit tps65090_regulator_exit(void)
	190	+{
	191	+ platform_driver_unregister(&tps65090_regulator_driver);
	192	+}
	193	+module_exit(tps65090_regulator_exit);
	194	+
	195	+MODULE_DESCRIPTION("tps65090 regulator driver");
	196	+MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>");
	197	+MODULE_LICENSE("GPL v2");
	1	+/*
	2	+ * Regulator driver interface for TI TPS65090 PMIC family
	3	+ *
	4	+ * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
	5	+
	6	+ * This program is free software; you can redistribute it and/or modify it
	7	+ * under the terms and conditions of the GNU General Public License,
	8	+ * version 2, as published by the Free Software Foundation.
	9	+
	10	+ * This program is distributed in the hope it will be useful, but WITHOUT
	11	+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	12	+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	13	+ * more details.
	14	+
	15	+ * You should have received a copy of the GNU General Public License
	16	+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
	17	+ */
	18	+
	19	+#ifndef __REGULATOR_TPS65090_H
	20	+#define __REGULATOR_TPS65090_H
	21	+
	22	+#include <linux/regulator/machine.h>
	23	+
	24	+#define tps65090_rails(_name) "tps65090_"#_name
	25	+
	26	+enum {
	27	+ TPS65090_ID_DCDC1,
	28	+ TPS65090_ID_DCDC2,
	29	+ TPS65090_ID_DCDC3,
	30	+ TPS65090_ID_FET1,
	31	+ TPS65090_ID_FET2,
	32	+ TPS65090_ID_FET3,
	33	+ TPS65090_ID_FET4,
	34	+ TPS65090_ID_FET5,
	35	+ TPS65090_ID_FET6,
	36	+ TPS65090_ID_FET7,
	37	+};
	38	+
	39	+/*
	40	+ * struct tps65090_regulator_platform_data
	41	+ *
	42	+ * @regulator: The regulator init data.
	43	+ * @slew_rate_uV_per_us: Slew rate microvolt per microsec.
	44	+ */
	45	+
	46	+struct tps65090_regulator_platform_data {
	47	+ struct regulator_init_data regulator;
	48	+};
	49	+
	50	+#endif /* __REGULATOR_TPS65090_H */