8284328cd9
smsc ece1099 is a keyboard scan or gpio expansion device. The patch create keypad and gpio expander child for this multi function smsc driver. Cc: Benoit Cousson <b-cousson@ti.com> Cc: Felipe Balbi <balbi@ti.com> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Sourav Poddar <sourav.poddar@ti.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
109 lines
2.9 KiB
C
109 lines
2.9 KiB
C
/*
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* SMSC ECE1099
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*
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* Copyright 2012 Texas Instruments Inc.
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*
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* Author: Sourav Poddar <sourav.poddar@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#ifndef __LINUX_MFD_SMSC_H
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#define __LINUX_MFD_SMSC_H
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#include <linux/regmap.h>
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#define SMSC_ID_ECE1099 1
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#define SMSC_NUM_CLIENTS 2
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#define SMSC_BASE_ADDR 0x38
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#define OMAP_GPIO_SMSC_IRQ 151
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#define SMSC_MAXGPIO 32
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#define SMSC_BANK(offs) ((offs) >> 3)
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#define SMSC_BIT(offs) (1u << ((offs) & 0x7))
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struct smsc {
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struct device *dev;
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struct i2c_client *i2c_clients[SMSC_NUM_CLIENTS];
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struct regmap *regmap;
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int clk;
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/* Stored chip id */
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int id;
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};
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struct smsc_gpio;
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struct smsc_keypad;
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static inline int smsc_read(struct device *child, unsigned int reg,
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unsigned int *dest)
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{
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struct smsc *smsc = dev_get_drvdata(child->parent);
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return regmap_read(smsc->regmap, reg, dest);
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}
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static inline int smsc_write(struct device *child, unsigned int reg,
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unsigned int value)
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{
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struct smsc *smsc = dev_get_drvdata(child->parent);
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return regmap_write(smsc->regmap, reg, value);
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}
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/* Registers for SMSC */
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#define SMSC_RESET 0xF5
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#define SMSC_GRP_INT 0xF9
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#define SMSC_CLK_CTRL 0xFA
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#define SMSC_WKUP_CTRL 0xFB
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#define SMSC_DEV_ID 0xFC
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#define SMSC_DEV_REV 0xFD
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#define SMSC_VEN_ID_L 0xFE
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#define SMSC_VEN_ID_H 0xFF
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/* CLK VALUE */
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#define SMSC_CLK_VALUE 0x13
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/* Registers for function GPIO INPUT */
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#define SMSC_GPIO_DATA_IN_START 0x00
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/* Registers for function GPIO OUPUT */
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#define SMSC_GPIO_DATA_OUT_START 0x05
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/* Definitions for SMSC GPIO CONFIGURATION REGISTER*/
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#define SMSC_GPIO_INPUT_LOW 0x01
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#define SMSC_GPIO_INPUT_RISING 0x09
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#define SMSC_GPIO_INPUT_FALLING 0x11
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#define SMSC_GPIO_INPUT_BOTH_EDGE 0x19
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#define SMSC_GPIO_OUTPUT_PP 0x21
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#define SMSC_GPIO_OUTPUT_OP 0x31
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#define GRP_INT_STAT 0xf9
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#define SMSC_GPI_INT 0x0f
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#define SMSC_CFG_START 0x0A
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/* Registers for SMSC GPIO INTERRUPT STATUS REGISTER*/
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#define SMSC_GPIO_INT_STAT_START 0x32
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/* Registers for SMSC GPIO INTERRUPT MASK REGISTER*/
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#define SMSC_GPIO_INT_MASK_START 0x37
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/* Registers for SMSC function KEYPAD*/
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#define SMSC_KP_OUT 0x40
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#define SMSC_KP_IN 0x41
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#define SMSC_KP_INT_STAT 0x42
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#define SMSC_KP_INT_MASK 0x43
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/* Definitions for keypad */
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#define SMSC_KP_KSO 0x70
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#define SMSC_KP_KSI 0x51
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#define SMSC_KSO_ALL_LOW 0x20
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#define SMSC_KP_SET_LOW_PWR 0x0B
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#define SMSC_KP_SET_HIGH 0xFF
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#define SMSC_KSO_EVAL 0x00
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#endif /* __LINUX_MFD_SMSC_H */
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