path: root/drivers/pinctrl/pinctrl-palmas.c

/*
 * pinctrl-palmas.c -- TI PALMAS series pin control driver.
 *
 * Copyright (c) 2013, NVIDIA Corporation.
 *
 * Author: Laxman Dewangan <ldewangan@nvidia.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation version 2.
 *
 * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
 * whether express or implied; 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 * 02111-1307, USA
 */

#include <linux/delay.h>
#include <linux/module.h>
#include <linux/mfd/palmas.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pinctrl/machine.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinconf-generic.h>
#include <linux/pinctrl/pinconf.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/pm.h>
#include <linux/slab.h>

#include "core.h"
#include "pinconf.h"
#include "pinctrl-utils.h"

#define PALMAS_PIN_GPIO0_ID				0
#define PALMAS_PIN_GPIO1_VBUS_LED1_PWM1			1
#define PALMAS_PIN_GPIO2_REGEN_LED2_PWM2		2
#define PALMAS_PIN_GPIO3_CHRG_DET			3
#define PALMAS_PIN_GPIO4_SYSEN1				4
#define PALMAS_PIN_GPIO5_CLK32KGAUDIO_USB_PSEL		5
#define PALMAS_PIN_GPIO6_SYSEN2				6
#define PALMAS_PIN_GPIO7_MSECURE_PWRHOLD		7
#define PALMAS_PIN_GPIO8_SIM1RSTI			8
#define PALMAS_PIN_GPIO9_LOW_VBAT			9
#define PALMAS_PIN_GPIO10_WIRELESS_CHRG1		10
#define PALMAS_PIN_GPIO11_RCM				11
#define PALMAS_PIN_GPIO12_SIM2RSTO			12
#define PALMAS_PIN_GPIO13				13
#define PALMAS_PIN_GPIO14				14
#define PALMAS_PIN_GPIO15_SIM2RSTI			15
#define PALMAS_PIN_VAC					16
#define PALMAS_PIN_POWERGOOD_USB_PSEL			17
#define PALMAS_PIN_NRESWARM				18
#define PALMAS_PIN_PWRDOWN				19
#define PALMAS_PIN_GPADC_START				20
#define PALMAS_PIN_RESET_IN				21
#define PALMAS_PIN_NSLEEP				22
#define PALMAS_PIN_ENABLE1				23
#define PALMAS_PIN_ENABLE2				24
#define PALMAS_PIN_INT					25
#define PALMAS_PIN_NUM					(PALMAS_PIN_INT + 1)

struct palmas_pin_function {
	const char *name;
	const char * const *groups;
	unsigned ngroups;
};

struct palmas_pctrl_chip_info {
	struct device *dev;
	struct pinctrl_dev *pctl;
	struct palmas *palmas;
	int pins_current_opt[PALMAS_PIN_NUM];
	const struct palmas_pin_function *functions;
	unsigned num_functions;
	const struct palmas_pingroup *pin_groups;
	int num_pin_groups;
	const struct pinctrl_pin_desc *pins;
	unsigned num_pins;
};

static const struct pinctrl_pin_desc palmas_pins_desc[] = {
	PINCTRL_PIN(PALMAS_PIN_GPIO0_ID, "gpio0"),
	PINCTRL_PIN(PALMAS_PIN_GPIO1_VBUS_LED1_PWM1, "gpio1"),
	PINCTRL_PIN(PALMAS_PIN_GPIO2_REGEN_LED2_PWM2, "gpio2"),
	PINCTRL_PIN(PALMAS_PIN_GPIO3_CHRG_DET, "gpio3"),
	PINCTRL_PIN(PALMAS_PIN_GPIO4_SYSEN1, "gpio4"),
	PINCTRL_PIN(PALMAS_PIN_GPIO5_CLK32KGAUDIO_USB_PSEL, "gpio5"),
	PINCTRL_PIN(PALMAS_PIN_GPIO6_SYSEN2, "gpio6"),
	PINCTRL_PIN(PALMAS_PIN_GPIO7_MSECURE_PWRHOLD, "gpio7"),
	PINCTRL_PIN(PALMAS_PIN_GPIO8_SIM1RSTI, "gpio8"),
	PINCTRL_PIN(PALMAS_PIN_GPIO9_LOW_VBAT, "gpio9"),
	PINCTRL_PIN(PALMAS_PIN_GPIO10_WIRELESS_CHRG1, "gpio10"),
	PINCTRL_PIN(PALMAS_PIN_GPIO11_RCM, "gpio11"),
	PINCTRL_PIN(PALMAS_PIN_GPIO12_SIM2RSTO, "gpio12"),
	PINCTRL_PIN(PALMAS_PIN_GPIO13, "gpio13"),
	PINCTRL_PIN(PALMAS_PIN_GPIO14, "gpio14"),
	PINCTRL_PIN(PALMAS_PIN_GPIO15_SIM2RSTI, "gpio15"),
	PINCTRL_PIN(PALMAS_PIN_VAC, "vac"),
	PINCTRL_PIN(PALMAS_PIN_POWERGOOD_USB_PSEL, "powergood"),
	PINCTRL_PIN(PALMAS_PIN_NRESWARM, "nreswarm"),
	PINCTRL_PIN(PALMAS_PIN_PWRDOWN, "pwrdown"),
	PINCTRL_PIN(PALMAS_PIN_GPADC_START, "gpadc_start"),
	PINCTRL_PIN(PALMAS_PIN_RESET_IN, "reset_in"),
	PINCTRL_PIN(PALMAS_PIN_NSLEEP, "nsleep"),
	PINCTRL_PIN(PALMAS_PIN_ENABLE1, "enable1"),
	PINCTRL_PIN(PALMAS_PIN_ENABLE2, "enable2"),
	PINCTRL_PIN(PALMAS_PIN_INT, "int"),
};

static const char * const opt0_groups[] = {
	"gpio0",
	"gpio1",
	"gpio2",
	"gpio3",
	"gpio4",
	"gpio5",
	"gpio6",
	"gpio7",
	"gpio8",
	"gpio9",
	"gpio10",
	"gpio11",
	"gpio12",
	"gpio13",
	"gpio14",
	"gpio15",
	"vac",
	"powergood",
	"nreswarm",
	"pwrdown",
	"gpadc_start",
	"reset_in",
	"nsleep",
	"enable1",
	"enable2",
	"int",
};

static const char * const opt1_groups[] = {
	"gpio0",
	"gpio1",
	"gpio2",
	"gpio3",
	"gpio4",
	"gpio5",
	"gpio6",
	"gpio7",
	"gpio8",
	"gpio9",
	"gpio10",
	"gpio11",
	"gpio12",
	"gpio15",
	"vac",
	"powergood",
};

static const char * const opt2_groups[] = {