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path: root/drivers/pinctrl/sh-pfc/pfc-r8a7791.c
AgeCommit message (Expand)Author
2019-05-21pinctrl: sh-pfc: Rename 2-parameter CPU_ALL_PORT() variantGeert Uytterhoeven
2019-04-02pinctrl: sh-pfc: Absorb enum IDs in PINMUX_CFG_REG_VAR() macroGeert Uytterhoeven
2019-04-02pinctrl: sh-pfc: Absorb enum IDs in PINMUX_CFG_REG() macroGeert Uytterhoeven
2019-04-02pinctrl: sh-pfc: Add missing #include <linux/errno.h>Geert Uytterhoeven
2019-02-11pinctrl: sh-pfc: r8a7791: Fix scifb2_data_c pin groupGeert Uytterhoeven
2019-01-21pinctrl: sh-pfc: r8a7791: Fix VIN1 versioned groupsGeert Uytterhoeven
2018-12-18pinctrl: sh-pfc: r8a7791: Remove bogus marks from vin1_b_data18 groupGeert Uytterhoeven
2018-12-18pinctrl: sh-pfc: r8a7791: Remove bogus ctrl marks from qspi_data4_b groupGeert Uytterhoeven
2018-09-28pinctrl: sh-pfc: rcar: Rename automotive-only arrays to automotiveGeert Uytterhoeven
2018-09-19pinctrl: sh-pfc: r8a7791: Add r8a7744 supportBiju Das
2018-09-11pinctrl: sh-pfc: Convert to SPDX identifiersKuninori Morimoto
2017-12-19pinctrl: sh-pfc: r8a7791: Add tpu groups and functionFabrizio Castro
2017-12-05pinctrl: sh-pfc: r8a7791: Add can_clk functionFabrizio Castro
2017-07-17pinctrl: sh-pfc: r8a7791: Add missing mmc_data8_b pin groupGeert Uytterhoeven
2017-05-16pinctrl: sh-pfc: r8a7791: Add R8A7743 supportSergei Shtylyov
2017-05-15pinctrl: sh-pfc: r8a7791: Grand I2C renameSergei Shtylyov
2017-04-04pinctrl: sh-pfc: r8a7791: Fix IPSR comment typosSergei Shtylyov
2017-04-04pinctrl: sh-pfc: r8a7791: Fix SCIF2 pinmux dataSergei Shtylyov
2017-04-04pinctrl: sh-pfc: r8a7791: Add missing DVC_MUTE signalSergei Shtylyov
2017-04-04pinctrl: sh-pfc: r8a7791: Add missing HSCIF1 pinmux dataSergei Shtylyov
2017-01-20pinctrl: sh-pfc: r8a7791: Add ADI pinconf supportJacopo Mondi
2016-12-27pinctrl: sh-pfc: r8a7793: Implement voltage switching for SDHISimon Horman
2016-09-14pinctrl: sh-pfc: r8a7791: Implement voltage switching for SDHISimon Horman
2016-06-21pinctrl: sh-pfc: Improve core and user API separationGeert Uytterhoeven
2016-02-08pinctrl: sh-pfc: Rename PINMUX_IPSR_DATA() to PINMUX_IPSR_GPSR()Geert Uytterhoeven
2015-12-16pinctrl: sh-pfc: r8a7791: add EtherAVB pin groupsSergei Shtylyov
2015-12-08pinctrl: sh-pfc: r8a7791: Add SCIF_CLK supportGeert Uytterhoeven
2015-11-30pinctrl: sh-pfc: Share/reuse same PORT_GP_x() macrosKuninori Morimoto
2015-11-30pinctrl: sh-pfc: r8a7791: Use PINMUX_SINGLE() instead of raw PINMUX_DATA()Geert Uytterhoeven
2015-10-20pinctrl: sh-pfc: Stop including <linux/platform_data/gpio-rcar.h>Geert Uytterhoeven
2015-10-20pinctrl: sh-pfc: Rename .gpio_data[] to .pinmux_data[]Geert Uytterhoeven
2015-10-20pinctrl: sh-pfc: r8a779[01]: Move 'union vin_data' to shared header fileSergei Shtylyov
2015-10-02pinctrl: sh-pfc: r8a7791: use PINMUX_IPSR_MSEL()Kuninori Morimoto
2015-10-02pinctrl: sh-pfc: r8a7791/r8a7793: Correct SCIFB1_B SCK MOD_SEL valueGeert Uytterhoeven
2015-07-16sh-pfc: r8a7791: remove non-existing GPIO pinsLaurent Pinchart
2015-06-01pinctrl: Spelling s/reseved/reserved/Geert Uytterhoeven
2015-05-19pinctrl: sh-pfc: r8a7791: Add PWM pin groups and functionsYoshihiro Shimoda
2015-05-12pinctrl: sh-pfc: Add r8a7793 supportUlrich Hecht
2015-01-15sh-pfc: r8a7791: add MLB+ pin groupSergei Shtylyov
2015-01-15sh-pfc: r8a7791: fix typo in MLB_CLKSergei Shtylyov
2014-08-17sh-pfc: r8a7791: fix CAN pin groupsSergei Shtylyov
2014-07-11sh-pfc: r8a7791: add CAN pin groupsSergei Shtylyov
2014-07-11pinctrl: sh-pfc: r8a7791: Add HSCIF pin supportNobuhiro Iwamatsu
2014-06-03Merge tag 'pinctrl-v3.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/...Linus Torvalds
2014-04-23sh-pfc: r8a7791: Fix definition of MOD_SEL3Phil Edworthy
2014-04-22sh-pfc: r8a7791: Add Audio pin supportKuninori Morimoto
2014-04-22sh-pfc: r8a7791: Add SSI pin supportKuninori Morimoto
2014-04-22pinctrl: sh-pfc: r8a7791: Split the DU sync and cde/disp groupsLaurent Pinchart
2014-04-01Merge tag 'pinctrl-v3.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/...Linus Torvalds
2014-03-05pinctrl: sh-pfc: r8a7791: SD1_CLK fixMagnus Damm
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * extcon-rt8973a.c - Richtek RT8973A extcon driver to support USB switches
 *
 * Copyright (c) 2014 Samsung Electronics Co., Ltd
 * Author: Chanwoo Choi <cw00.choi@samsung.com>
 */

#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/irqdomain.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/extcon-provider.h>

#include "extcon-rt8973a.h"

#define	DELAY_MS_DEFAULT		20000	/* unit: millisecond */

struct muic_irq {
	unsigned int irq;
	const char *name;
	unsigned int virq;
};

struct reg_data {
	u8 reg;
	u8 mask;
	u8 val;
	bool invert;
};

struct rt8973a_muic_info {
	struct device *dev;
	struct extcon_dev *edev;

	struct i2c_client *i2c;
	struct regmap *regmap;

	struct regmap_irq_chip_data *irq_data;
	struct muic_irq *muic_irqs;
	unsigned int num_muic_irqs;
	int irq;
	bool irq_attach;
	bool irq_detach;
	bool irq_ovp;
	bool irq_otp;
	struct work_struct irq_work;

	struct reg_data *reg_data;
	unsigned int num_reg_data;
	bool auto_config;

	struct mutex mutex;

	/*
	 * Use delayed workqueue to detect cable state and then
	 * notify cable state to notifiee/platform through uevent.
	 * After completing the booting of platform, the extcon provider
	 * driver should notify cable state to upper layer.
	 */
	struct delayed_work wq_detcable;
};

/* Default value of RT8973A register to bring up MUIC device. */
static struct reg_data rt8973a_reg_data[] = {
	{
		.reg = RT8973A_REG_CONTROL1,
		.mask = RT8973A_REG_CONTROL1_ADC_EN_MASK
			| RT8973A_REG_CONTROL1_USB_CHD_EN_MASK
			| RT8973A_REG_CONTROL1_CHGTYP_MASK
			| RT8973A_REG_CONTROL1_SWITCH_OPEN_MASK
			| RT8973A_REG_CONTROL1_AUTO_CONFIG_MASK
			| RT8973A_REG_CONTROL1_INTM_MASK,
		.val = RT8973A_REG_CONTROL1_ADC_EN_MASK
			| RT8973A_REG_CONTROL1_USB_CHD_EN_MASK
			| RT8973A_REG_CONTROL1_CHGTYP_MASK,
		.invert = false,
	},
	{ /* sentinel */ }
};

/* List of detectable cables */
static const unsigned int rt8973a_extcon_cable[] = {
	EXTCON_USB,
	EXTCON_USB_HOST,
	EXTCON_CHG_USB_SDP,
	EXTCON_CHG_USB_DCP,
	EXTCON_JIG,
	EXTCON_NONE,
};

/* Define OVP (Over Voltage Protection), OTP (Over Temperature Protection) */
enum rt8973a_event_type {
	RT8973A_EVENT_ATTACH = 1,
	RT8973A_EVENT_DETACH,
	RT8973A_EVENT_OVP,
	RT8973A_EVENT_OTP,
};

/* Define supported accessory type */
enum rt8973a_muic_acc_type {
	RT8973A_MUIC_ADC_OTG = 0x0,
	RT8973A_MUIC_ADC_AUDIO_SEND_END_BUTTON,
	RT8973A_MUIC_ADC_AUDIO_REMOTE_S1_BUTTON,
	RT8973A_MUIC_ADC_AUDIO_REMOTE_S2_BUTTON,
	RT8973A_MUIC_ADC_AUDIO_REMOTE_S3_BUTTON,
	RT8973A_MUIC_ADC_AUDIO_REMOTE_S4_BUTTON,
	RT8973A_MUIC_ADC_AUDIO_REMOTE_S5_BUTTON,
	RT8973A_MUIC_ADC_AUDIO_REMOTE_S6_BUTTON,
	RT8973A_MUIC_ADC_AUDIO_REMOTE_S7_BUTTON,
	RT8973A_MUIC_ADC_AUDIO_REMOTE_S8_BUTTON,
	RT8973A_MUIC_ADC_AUDIO_REMOTE_S9_BUTTON,
	RT8973A_MUIC_ADC_AUDIO_REMOTE_S10_BUTTON,
	RT8973A_MUIC_ADC_AUDIO_REMOTE_S11_BUTTON,
	RT8973A_MUIC_ADC_AUDIO_REMOTE_S12_BUTTON,
	RT8973A_MUIC_ADC_RESERVED_ACC_1,
	RT8973A_MUIC_ADC_RESERVED_ACC_2,
	RT8973A_MUIC_ADC_RESERVED_ACC_3,
	RT8973A_MUIC_ADC_RESERVED_ACC_4,
	RT8973A_MUIC_ADC_RESERVED_ACC_5,
	RT8973A_MUIC_ADC_AUDIO_TYPE2,
	RT8973A_MUIC_ADC_PHONE_POWERED_DEV,
	RT8973A_MUIC_ADC_UNKNOWN_ACC_1,
	RT8973A_MUIC_ADC_UNKNOWN_ACC_2,
	RT8973A_MUIC_ADC_TA,
	RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_OFF_USB,
	RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_ON_USB,
	RT8973A_MUIC_ADC_UNKNOWN_ACC_3,
	RT8973A_MUIC_ADC_UNKNOWN_ACC_4,
	RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_OFF_UART,
	RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_ON_UART,
	RT8973A_MUIC_ADC_UNKNOWN_ACC_5,
	RT8973A_MUIC_ADC_OPEN = 0x1f,

	/*
	 * The below accessories has same ADC value (0x1f).
	 * So, Device type1 is used to separate specific accessory.
	 */
					/* |---------|--ADC| */
					/* |    [7:5]|[4:0]| */
	RT8973A_MUIC_ADC_USB = 0x3f,	/* |      001|11111| */
};

/* List of supported interrupt for RT8973A */
static struct muic_irq rt8973a_muic_irqs[] = {
	{ RT8973A_INT1_ATTACH,		"muic-attach" },
	{ RT8973A_INT1_DETACH,		"muic-detach" },
	{ RT8973A_INT1_CHGDET,		"muic-chgdet" },
	{ RT8973A_INT1_DCD_T,		"muic-dcd-t" },
	{ RT8973A_INT1_OVP,		"muic-ovp" },
	{ RT8973A_INT1_CONNECT,		"muic-connect" },
	{ RT8973A_INT1_ADC_CHG,		"muic-adc-chg" },
	{ RT8973A_INT1_OTP,		"muic-otp" },
	{ RT8973A_INT2_UVLO,		"muic-uvlo" },
	{ RT8973A_INT2_POR,		"muic-por" },
	{ RT8973A_INT2_OTP_FET,		"muic-otp-fet" },
	{ RT8973A_INT2_OVP_FET,		"muic-ovp-fet" },
	{ RT8973A_INT2_OCP_LATCH,	"muic-ocp-latch" },
	{ RT8973A_INT2_OCP,		"muic-ocp" },
	{ RT8973A_INT2_OVP_OCP,		"muic-ovp-ocp" },
};

/* Define interrupt list of RT8973A to register regmap_irq */
static const struct regmap_irq rt8973a_irqs[] = {
	/* INT1 interrupts */
	{ .reg_offset = 0, .mask = RT8973A_INT1_ATTACH_MASK, },
	{ .reg_offset = 0, .mask = RT8973A_INT1_DETACH_MASK, },
	{ .reg_offset = 0, .mask = RT8973A_INT1_CHGDET_MASK, },
	{ .reg_offset = 0, .mask = RT8973A_INT1_DCD_T_MASK, },
	{ .reg_offset = 0, .mask = RT8973A_INT1_OVP_MASK, },
	{ .reg_offset = 0, .mask = RT8973A_INT1_CONNECT_MASK, },
	{ .reg_offset = 0, .mask = RT8973A_INT1_ADC_CHG_MASK, },
	{ .reg_offset = 0, .mask = RT8973A_INT1_OTP_MASK, },

	/* INT2 interrupts */
	{ .reg_offset = 1, .mask = RT8973A_INT2_UVLOT_MASK,},
	{ .reg_offset = 1, .mask = RT8973A_INT2_POR_MASK, },
	{ .reg_offset = 1, .mask = RT8973A_INT2_OTP_FET_MASK, },
	{ .reg_offset = 1, .mask = RT8973A_INT2_OVP_FET_MASK, },
	{ .reg_offset = 1, .mask = RT8973A_INT2_OCP_LATCH_MASK, },
	{ .reg_offset = 1, .mask = RT8973A_INT2_OCP_MASK, },
	{ .reg_offset = 1, .mask = RT8973A_INT2_OVP_OCP_MASK, },
};

static const struct regmap_irq_chip rt8973a_muic_irq_chip = {
	.name			= "rt8973a",
	.status_base		= RT8973A_REG_INT1,
	.mask_base		= RT8973A_REG_INTM1,
	.mask_invert		= false,
	.num_regs		= 2,
	.irqs			= rt8973a_irqs,
	.num_irqs		= ARRAY_SIZE(rt8973a_irqs),
};

/* Define regmap configuration of RT8973A for I2C communication  */
static bool rt8973a_muic_volatile_reg(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case RT8973A_REG_INTM1:
	case RT8973A_REG_INTM2:
		return true;
	default:
		break;
	}
	return false;
}

static const struct regmap_config rt8973a_muic_regmap_config = {
	.reg_bits	= 8,
	.val_bits	= 8,