163 lines
4.8 KiB
C
163 lines
4.8 KiB
C
/*
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* Copyright (c) 2011, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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/*
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* Qualcomm PMIC8XXX gpio driver header file
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*
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*/
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#ifndef __PM8XXX_GPIO_H
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#define __PM8XXX_GPIO_H
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#include <linux/errno.h>
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#define PM8XXX_GPIO_DEV_NAME "pm8xxx-gpio"
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struct pm8xxx_gpio_core_data {
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int ngpios;
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};
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struct pm8xxx_gpio_platform_data {
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struct pm8xxx_gpio_core_data gpio_cdata;
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int gpio_base;
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};
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/* GPIO parameters */
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/* direction */
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#define PM_GPIO_DIR_OUT 0x01
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#define PM_GPIO_DIR_IN 0x02
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#define PM_GPIO_DIR_BOTH (PM_GPIO_DIR_OUT | PM_GPIO_DIR_IN)
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/* output_buffer */
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#define PM_GPIO_OUT_BUF_OPEN_DRAIN 1
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#define PM_GPIO_OUT_BUF_CMOS 0
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/* pull */
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#define PM_GPIO_PULL_UP_30 0
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#define PM_GPIO_PULL_UP_1P5 1
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#define PM_GPIO_PULL_UP_31P5 2
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#define PM_GPIO_PULL_UP_1P5_30 3
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#define PM_GPIO_PULL_DN 4
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#define PM_GPIO_PULL_NO 5
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/* vin_sel: Voltage Input Select */
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#define PM_GPIO_VIN_VPH 0 /* 3v ~ 4.4v */
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#define PM_GPIO_VIN_BB 1 /* ~3.3v */
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#define PM_GPIO_VIN_S4 2 /* 1.8v */
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#define PM_GPIO_VIN_L15 3
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#define PM_GPIO_VIN_L4 4
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#define PM_GPIO_VIN_L3 5
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#define PM_GPIO_VIN_L17 6
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/* vin_sel: Voltage Input select on PM8058 */
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#define PM8058_GPIO_VIN_VPH 0
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#define PM8058_GPIO_VIN_BB 1
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#define PM8058_GPIO_VIN_S3 2
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#define PM8058_GPIO_VIN_L3 3
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#define PM8058_GPIO_VIN_L7 4
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#define PM8058_GPIO_VIN_L6 5
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#define PM8058_GPIO_VIN_L5 6
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#define PM8058_GPIO_VIN_L2 7
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/* vin_sel: Voltage Input Select on PM8038*/
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#define PM8038_GPIO_VIN_VPH 0
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#define PM8038_GPIO_VIN_BB 1
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#define PM8038_GPIO_VIN_L11 2
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#define PM8038_GPIO_VIN_L15 3
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#define PM8038_GPIO_VIN_L4 4
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#define PM8038_GPIO_VIN_L3 5
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#define PM8038_GPIO_VIN_L17 6
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/* vin_sel: Voltage Input Select on PM8018*/
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#define PM8018_GPIO_VIN_L4 0
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#define PM8018_GPIO_VIN_L14 1
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#define PM8018_GPIO_VIN_S3 2
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#define PM8018_GPIO_VIN_L6 3
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#define PM8018_GPIO_VIN_L2 4
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#define PM8018_GPIO_VIN_L5 5
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#define PM8018_GPIO_VIN_L8 6
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#define PM8018_GPIO_VIN_VPH 7
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/* out_strength */
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#define PM_GPIO_STRENGTH_NO 0
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#define PM_GPIO_STRENGTH_HIGH 1
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#define PM_GPIO_STRENGTH_MED 2
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#define PM_GPIO_STRENGTH_LOW 3
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/* function */
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#define PM_GPIO_FUNC_NORMAL 0
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#define PM_GPIO_FUNC_PAIRED 1
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#define PM_GPIO_FUNC_1 2
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#define PM_GPIO_FUNC_2 3
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#define PM_GPIO_DTEST1 4
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#define PM_GPIO_DTEST2 5
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#define PM_GPIO_DTEST3 6
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#define PM_GPIO_DTEST4 7
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/**
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* struct pm_gpio - structure to specify gpio configurtion values
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* @direction: indicates whether the gpio should be input, output, or
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* both. Should be of the type PM_GPIO_DIR_*
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* @output_buffer: indicates gpio should be configured as CMOS or open
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* drain. Should be of the type PM_GPIO_OUT_BUF_*
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* @output_value: The gpio output value of the gpio line - 0 or 1
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* @pull: Indicates whether a pull up or pull down should be
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* applied. If a pullup is required the current strength
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* needs to be specified. Current values of 30uA, 1.5uA,
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* 31.5uA, 1.5uA with 30uA boost are supported. This value
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* should be one of the PM_GPIO_PULL_*
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* @vin_sel: specifies the voltage level when the output is set to 1.
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* For an input gpio specifies the voltage level at which
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* the input is interpreted as a logical 1.
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* @out_strength: the amount of current supplied for an output gpio,
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* should be of the type PM_GPIO_STRENGTH_*
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* @function: choose alternate function for the gpio. Certain gpios
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* can be paired (shorted) with each other. Some gpio pin
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* can act as alternate functions. This parameter should
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* be of type PM_GPIO_FUNC_*
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* @inv_int_pol: Invert polarity before feeding the line to the interrupt
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* module in pmic. This feature will almost be never used
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* since the pm8xxx interrupt block can detect both edges
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* and both levels.
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* @disable_pin: Disable the gpio by configuring it as high impedance.
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*/
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struct pm_gpio {
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int direction;
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int output_buffer;
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int output_value;
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int pull;
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int vin_sel;
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int out_strength;
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int function;
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int inv_int_pol;
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int disable_pin;
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};
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#if defined(CONFIG_GPIO_PM8XXX) || defined(CONFIG_GPIO_PM8XXX_MODULE)
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/**
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* pm8xxx_gpio_config - configure a gpio controlled by a pm8xxx chip
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* @gpio: gpio number to configure
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* @param: configuration values
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*
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* RETURNS: an appropriate -ERRNO error value on error, or zero for success.
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*/
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int pm8xxx_gpio_config(int gpio, struct pm_gpio *param);
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#else
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static inline int pm8xxx_gpio_config(int gpio, struct pm_gpio *param)
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{
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return -ENXIO;
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}
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#endif
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#endif
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