Commit 4d9cf7df authored by Jeff LaBundy's avatar Jeff LaBundy Committed by Lee Jones
Browse files

mfd: Add support for Azoteq IQS620A/621/622/624/625 



This patch adds core support for the Azoteq IQS620A, IQS621, IQS622,
IQS624 and IQS625 multi-function sensors.

Signed-off-by: default avatarJeff LaBundy <jeff@labundy.com>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent d8a3c488

drivers/mfd/Kconfig

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@@ -642,6 +642,19 @@ config MFD_IPAQ_MICRO 
	  AT90LS8535 microcontroller flashed with a special iPAQ

	  firmware using the custom protocol implemented in this driver.



config MFD_IQS62X

	tristate "Azoteq IQS620A/621/622/624/625 core support"

	depends on I2C

	select MFD_CORE

	select REGMAP_I2C

	help

	  Say Y here if you want to build core support for the Azoteq IQS620A,

	  IQS621, IQS622, IQS624 and IQS625 multi-function sensors. Additional

	  options must be selected to enable device-specific functions.



	  To compile this driver as a module, choose M here: the module will

	  be called iqs62x.



config MFD_JANZ_CMODIO

	tristate "Janz CMOD-IO PCI MODULbus Carrier Board"

	select MFD_CORE

drivers/mfd/Makefile

+1 −0
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@@ -226,6 +226,7 @@ obj-$(CONFIG_MFD_AS3711) += as3711.o 
obj-$(CONFIG_MFD_AS3722)	+= as3722.o

obj-$(CONFIG_MFD_STW481X)	+= stw481x.o

obj-$(CONFIG_MFD_IPAQ_MICRO)	+= ipaq-micro.o

obj-$(CONFIG_MFD_IQS62X)	+= iqs62x.o

obj-$(CONFIG_MFD_MENF21BMC)	+= menf21bmc.o

obj-$(CONFIG_MFD_HI6421_PMIC)	+= hi6421-pmic-core.o

obj-$(CONFIG_MFD_HI655X_PMIC)   += hi655x-pmic.o

drivers/mfd/iqs62x.c

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File added.

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include/linux/mfd/iqs62x.h

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/* SPDX-License-Identifier: GPL-2.0+ */

/*

 * Azoteq IQS620A/621/622/624/625 Multi-Function Sensors

 *

 * Copyright (C) 2019 Jeff LaBundy <jeff@labundy.com>

 */



#ifndef __LINUX_MFD_IQS62X_H

#define __LINUX_MFD_IQS62X_H



#define IQS620_PROD_NUM				0x41

#define IQS621_PROD_NUM				0x46

#define IQS622_PROD_NUM				0x42

#define IQS624_PROD_NUM				0x43

#define IQS625_PROD_NUM				0x4E



#define IQS621_ALS_FLAGS			0x16

#define IQS622_ALS_FLAGS			0x14



#define IQS624_HALL_UI				0x70

#define IQS624_HALL_UI_WHL_EVENT		BIT(4)

#define IQS624_HALL_UI_INT_EVENT		BIT(3)

#define IQS624_HALL_UI_AUTO_CAL			BIT(2)



#define IQS624_INTERVAL_DIV			0x7D



#define IQS620_GLBL_EVENT_MASK			0xD7

#define IQS620_GLBL_EVENT_MASK_PMU		BIT(6)



#define IQS62X_NUM_KEYS				16

#define IQS62X_NUM_EVENTS			(IQS62X_NUM_KEYS + 5)



#define IQS62X_EVENT_SIZE			10



enum iqs62x_ui_sel {

	IQS62X_UI_PROX,

	IQS62X_UI_SAR1,

};



enum iqs62x_event_reg {

	IQS62X_EVENT_NONE,

	IQS62X_EVENT_SYS,

	IQS62X_EVENT_PROX,

	IQS62X_EVENT_HYST,

	IQS62X_EVENT_HALL,

	IQS62X_EVENT_ALS,

	IQS62X_EVENT_IR,

	IQS62X_EVENT_WHEEL,

	IQS62X_EVENT_INTER,

	IQS62X_EVENT_UI_LO,

	IQS62X_EVENT_UI_HI,

};



enum iqs62x_event_flag {

	/* keys */

	IQS62X_EVENT_PROX_CH0_T,

	IQS62X_EVENT_PROX_CH0_P,

	IQS62X_EVENT_PROX_CH1_T,

	IQS62X_EVENT_PROX_CH1_P,

	IQS62X_EVENT_PROX_CH2_T,

	IQS62X_EVENT_PROX_CH2_P,

	IQS62X_EVENT_HYST_POS_T,

	IQS62X_EVENT_HYST_POS_P,

	IQS62X_EVENT_HYST_NEG_T,

	IQS62X_EVENT_HYST_NEG_P,

	IQS62X_EVENT_SAR1_ACT,

	IQS62X_EVENT_SAR1_QRD,

	IQS62X_EVENT_SAR1_MOVE,

	IQS62X_EVENT_SAR1_HALT,

	IQS62X_EVENT_WHEEL_UP,

	IQS62X_EVENT_WHEEL_DN,



	/* switches */

	IQS62X_EVENT_HALL_N_T,

	IQS62X_EVENT_HALL_N_P,

	IQS62X_EVENT_HALL_S_T,

	IQS62X_EVENT_HALL_S_P,



	/* everything else */

	IQS62X_EVENT_SYS_RESET,

};



struct iqs62x_event_data {

	u16 ui_data;

	u8 als_flags;

	u8 ir_flags;

	u8 interval;

};



struct iqs62x_event_desc {

	enum iqs62x_event_reg reg;

	u8 mask;

	u8 val;

};



struct iqs62x_dev_desc {

	const char *dev_name;

	const struct mfd_cell *sub_devs;

	int num_sub_devs;



	u8 prod_num;

	u8 sw_num;

	const u8 *cal_regs;

	int num_cal_regs;



	u8 prox_mask;

	u8 sar_mask;

	u8 hall_mask;

	u8 hyst_mask;

	u8 temp_mask;

	u8 als_mask;

	u8 ir_mask;



	u8 prox_settings;

	u8 als_flags;

	u8 hall_flags;

	u8 hyst_shift;



	u8 interval;

	u8 interval_div;



	u8 clk_div;

	const char *fw_name;

	const enum iqs62x_event_reg (*event_regs)[IQS62X_EVENT_SIZE];

};



struct iqs62x_core {

	const struct iqs62x_dev_desc *dev_desc;

	struct i2c_client *client;

	struct regmap *regmap;

	struct blocking_notifier_head nh;

	struct list_head fw_blk_head;

	struct completion fw_done;

	enum iqs62x_ui_sel ui_sel;

};



extern const struct iqs62x_event_desc iqs62x_events[IQS62X_NUM_EVENTS];



#endif /* __LINUX_MFD_IQS62X_H */