[people/ms/u-boot.git] / drivers / power / pmic / palmas.c

/*
 * (C) Copyright 2016 Texas Instruments Incorporated, <www.ti.com>
 * Keerthy <j-keerthy@ti.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <fdtdec.h>
#include <errno.h>
#include <dm.h>
#include <i2c.h>
#include <power/pmic.h>
#include <power/regulator.h>
#include <power/palmas.h>
#include <dm/device.h>

DECLARE_GLOBAL_DATA_PTR;

static const struct pmic_child_info pmic_children_info[] = {
	{ .prefix = "ldo", .driver = PALMAS_LDO_DRIVER },
	{ .prefix = "smps", .driver = PALMAS_SMPS_DRIVER },
	{ },
};

static int palmas_write(struct udevice *dev, uint reg, const uint8_t *buff,
			  int len)
{
	if (dm_i2c_write(dev, reg, buff, len)) {
		pr_err("write error to device: %p register: %#x!", dev, reg);
		return -EIO;
	}

	return 0;
}

static int palmas_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
{
	if (dm_i2c_read(dev, reg, buff, len)) {
		pr_err("read error from device: %p register: %#x!", dev, reg);
		return -EIO;
	}

	return 0;
}

static int palmas_bind(struct udevice *dev)
{
	ofnode pmic_node = ofnode_null(), regulators_node;
	ofnode subnode;
	int children;

	dev_for_each_subnode(subnode, dev) {
		const char *name;
		char *temp;

		name = ofnode_get_name(subnode);
		temp = strstr(name, "pmic");
		if (temp) {
			pmic_node = subnode;
			break;
		}
	}

	if (!ofnode_valid(pmic_node)) {
		debug("%s: %s pmic subnode not found!", __func__, dev->name);
		return -ENXIO;
	}

	regulators_node = ofnode_find_subnode(pmic_node, "regulators");

	if (!ofnode_valid(regulators_node)) {
		debug("%s: %s reg subnode not found!", __func__, dev->name);
		return -ENXIO;
	}

	children = pmic_bind_children(dev, regulators_node, pmic_children_info);
	if (!children)
		debug("%s: %s - no child found\n", __func__, dev->name);

	/* Always return success for this device */
	return 0;
}

static struct dm_pmic_ops palmas_ops = {
	.read = palmas_read,
	.write = palmas_write,
};

static const struct udevice_id palmas_ids[] = {
	{ .compatible = "ti,tps659038", .data = TPS659038 },
	{ .compatible = "ti,tps65917" , .data = TPS65917 },
	{ }
};

U_BOOT_DRIVER(pmic_palmas) = {
	.name = "palmas_pmic",
	.id = UCLASS_PMIC,
	.of_match = palmas_ids,
	.bind = palmas_bind,
	.ops = &palmas_ops,
};
Commit	Line	Data
33621d24 K	1	/*
	2	* (C) Copyright 2016 Texas Instruments Incorporated, <www.ti.com>
	3	* Keerthy <j-keerthy@ti.com>
	4	*
	5	* SPDX-License-Identifier: GPL-2.0+
	6	*/
	7
	8	#include <common.h>
	9	#include <fdtdec.h>
	10	#include <errno.h>
	11	#include <dm.h>
	12	#include <i2c.h>
	13	#include <power/pmic.h>
	14	#include <power/regulator.h>
	15	#include <power/palmas.h>
	16	#include <dm/device.h>
	17
	18	DECLARE_GLOBAL_DATA_PTR;
	19
	20	static const struct pmic_child_info pmic_children_info[] = {
	21	{ .prefix = "ldo", .driver = PALMAS_LDO_DRIVER },
	22	{ .prefix = "smps", .driver = PALMAS_SMPS_DRIVER },
	23	{ },
	24	};
	25
	26	static int palmas_write(struct udevice dev, uint reg, const uint8_t buff,
	27	int len)
	28	{
	29	if (dm_i2c_write(dev, reg, buff, len)) {
9b643e31	30	pr_err("write error to device: %p register: %#x!", dev, reg);
33621d24 K	31	return -EIO;
	32	}
	33
	34	return 0;
	35	}
	36
	37	static int palmas_read(struct udevice dev, uint reg, uint8_t buff, int len)
	38	{
	39	if (dm_i2c_read(dev, reg, buff, len)) {
9b643e31	40	pr_err("read error from device: %p register: %#x!", dev, reg);
33621d24 K	41	return -EIO;
	42	}
	43
	44	return 0;
	45	}
	46
	47	static int palmas_bind(struct udevice *dev)
	48	{
7a869e6c SG	49	ofnode pmic_node = ofnode_null(), regulators_node;
7a869e6c SG	50	ofnode subnode;
33621d24	51	int children;
33621d24	52
7a869e6c	53	dev_for_each_subnode(subnode, dev) {
33621d24 K	54	const char *name;
	55	char *temp;
	56
7a869e6c	57	name = ofnode_get_name(subnode);
33621d24 K	58	temp = strstr(name, "pmic");
	59	if (temp) {
	60	pmic_node = subnode;
	61	break;
	62	}
	63	}
	64
7a869e6c	65	if (!ofnode_valid(pmic_node)) {
33621d24 K	66	debug("%s: %s pmic subnode not found!", __func__, dev->name);
	67	return -ENXIO;
	68	}
	69
7a869e6c	70	regulators_node = ofnode_find_subnode(pmic_node, "regulators");
33621d24	71
7a869e6c	72	if (!ofnode_valid(regulators_node)) {
33621d24 K	73	debug("%s: %s reg subnode not found!", __func__, dev->name);
	74	return -ENXIO;
	75	}
	76
	77	children = pmic_bind_children(dev, regulators_node, pmic_children_info);
	78	if (!children)
	79	debug("%s: %s - no child found\n", __func__, dev->name);
	80
	81	/* Always return success for this device */
	82	return 0;
	83	}
	84
	85	static struct dm_pmic_ops palmas_ops = {
	86	.read = palmas_read,
	87	.write = palmas_write,
	88	};
	89
	90	static const struct udevice_id palmas_ids[] = {
	91	{ .compatible = "ti,tps659038", .data = TPS659038 },
	92	{ .compatible = "ti,tps65917" , .data = TPS65917 },
	93	{ }
	94	};
	95
	96	U_BOOT_DRIVER(pmic_palmas) = {
	97	.name = "palmas_pmic",
	98	.id = UCLASS_PMIC,
	99	.of_match = palmas_ids,
	100	.bind = palmas_bind,
	101	.ops = &palmas_ops,
	102	};