pinctrl-msm.h
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/*
* Copyright (c) 2013, Sony Mobile Communications AB.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __PINCTRL_MSM_H__
#define __PINCTRL_MSM_H__
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/pinctrl/pinconf.h>
#include <linux/pinctrl/machine.h>
/**
* struct msm_function - a pinmux function
* @name: Name of the pinmux function.
* @groups: List of pingroups for this function.
* @ngroups: Number of entries in @groups.
*/
struct msm_function {
const char *name;
const char * const *groups;
unsigned ngroups;
};
/**
* struct msm_pingroup - Qualcomm pingroup definition
* @name: Name of the pingroup.
* @pins: A list of pins assigned to this pingroup.
* @npins: Number of entries in @pins.
* @funcs: A list of pinmux functions that can be selected for
* this group. The index of the selected function is used
* for programming the function selector.
* Entries should be indices into the groups list of the
* struct msm_pinctrl_soc_data.
* @ctl_reg: Offset of the register holding control bits for this group.
* @io_reg: Offset of the register holding input/output bits for this group.
* @intr_cfg_reg: Offset of the register holding interrupt configuration bits.
* @intr_status_reg: Offset of the register holding the status bits for this group.
* @intr_target_reg: Offset of the register specifying routing of the interrupts
* from this group.
* @mux_bit: Offset in @ctl_reg for the pinmux function selection.
* @pull_bit: Offset in @ctl_reg for the bias configuration.
* @drv_bit: Offset in @ctl_reg for the drive strength configuration.
* @oe_bit: Offset in @ctl_reg for controlling output enable.
* @in_bit: Offset in @io_reg for the input bit value.
* @out_bit: Offset in @io_reg for the output bit value.
* @intr_enable_bit: Offset in @intr_cfg_reg for enabling the interrupt for this group.
* @intr_status_bit: Offset in @intr_status_reg for reading and acking the interrupt
* status.
* @intr_target_bit: Offset in @intr_target_reg for configuring the interrupt routing.
* @intr_raw_status_bit: Offset in @intr_cfg_reg for the raw status bit.
* @intr_polarity_bit: Offset in @intr_cfg_reg for specifying polarity of the interrupt.
* @intr_detection_bit: Offset in @intr_cfg_reg for specifying interrupt type.
* @intr_detection_width: Number of bits used for specifying interrupt type,
* Should be 2 for SoCs that can detect both edges in hardware,
* otherwise 1.
*/
struct msm_pingroup {
const char *name;
const unsigned *pins;
unsigned npins;
unsigned funcs[8];
s16 ctl_reg;
s16 io_reg;
s16 intr_cfg_reg;
s16 intr_status_reg;
s16 intr_target_reg;
unsigned mux_bit:5;
unsigned pull_bit:5;
unsigned drv_bit:5;
unsigned oe_bit:5;
unsigned in_bit:5;
unsigned out_bit:5;
unsigned intr_enable_bit:5;
unsigned intr_status_bit:5;
unsigned intr_target_bit:5;
unsigned intr_raw_status_bit:5;
unsigned intr_polarity_bit:5;
unsigned intr_detection_bit:5;
unsigned intr_detection_width:5;
};
/**
* struct msm_pinctrl_soc_data - Qualcomm pin controller driver configuration
* @pins: An array describing all pins the pin controller affects.
* @npins: The number of entries in @pins.
* @functions: An array describing all mux functions the SoC supports.
* @nfunctions: The number of entries in @functions.
* @groups: An array describing all pin groups the pin SoC supports.
* @ngroups: The numbmer of entries in @groups.
* @ngpio: The number of pingroups the driver should expose as GPIOs.
*/
struct msm_pinctrl_soc_data {
const struct pinctrl_pin_desc *pins;
unsigned npins;
const struct msm_function *functions;
unsigned nfunctions;
const struct msm_pingroup *groups;
unsigned ngroups;
unsigned ngpios;
};
int msm_pinctrl_probe(struct platform_device *pdev,
const struct msm_pinctrl_soc_data *soc_data);
int msm_pinctrl_remove(struct platform_device *pdev);
#endif