123 lines
4.6 KiB
C
123 lines
4.6 KiB
C
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/*
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* Copyright (c) 2013, Sony Mobile Communications AB.
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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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#ifndef __PINCTRL_MSM_H__
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#define __PINCTRL_MSM_H__
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#include <linux/pinctrl/pinctrl.h>
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#include <linux/pinctrl/pinmux.h>
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#include <linux/pinctrl/pinconf.h>
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#include <linux/pinctrl/machine.h>
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/**
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* struct msm_function - a pinmux function
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* @name: Name of the pinmux function.
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* @groups: List of pingroups for this function.
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* @ngroups: Number of entries in @groups.
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*/
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struct msm_function {
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const char *name;
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const char * const *groups;
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unsigned ngroups;
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};
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/**
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* struct msm_pingroup - Qualcomm pingroup definition
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* @name: Name of the pingroup.
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* @pins: A list of pins assigned to this pingroup.
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* @npins: Number of entries in @pins.
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* @funcs: A list of pinmux functions that can be selected for
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* this group. The index of the selected function is used
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* for programming the function selector.
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* Entries should be indices into the groups list of the
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* struct msm_pinctrl_soc_data.
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* @ctl_reg: Offset of the register holding control bits for this group.
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* @io_reg: Offset of the register holding input/output bits for this group.
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* @intr_cfg_reg: Offset of the register holding interrupt configuration bits.
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* @intr_status_reg: Offset of the register holding the status bits for this group.
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* @intr_target_reg: Offset of the register specifying routing of the interrupts
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* from this group.
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* @mux_bit: Offset in @ctl_reg for the pinmux function selection.
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* @pull_bit: Offset in @ctl_reg for the bias configuration.
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* @drv_bit: Offset in @ctl_reg for the drive strength configuration.
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* @oe_bit: Offset in @ctl_reg for controlling output enable.
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* @in_bit: Offset in @io_reg for the input bit value.
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* @out_bit: Offset in @io_reg for the output bit value.
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* @intr_enable_bit: Offset in @intr_cfg_reg for enabling the interrupt for this group.
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* @intr_status_bit: Offset in @intr_status_reg for reading and acking the interrupt
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* status.
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* @intr_target_bit: Offset in @intr_target_reg for configuring the interrupt routing.
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* @intr_raw_status_bit: Offset in @intr_cfg_reg for the raw status bit.
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* @intr_polarity_bit: Offset in @intr_cfg_reg for specifying polarity of the interrupt.
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* @intr_detection_bit: Offset in @intr_cfg_reg for specifying interrupt type.
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* @intr_detection_width: Number of bits used for specifying interrupt type,
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* Should be 2 for SoCs that can detect both edges in hardware,
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* otherwise 1.
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*/
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struct msm_pingroup {
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const char *name;
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const unsigned *pins;
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unsigned npins;
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unsigned funcs[8];
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s16 ctl_reg;
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s16 io_reg;
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s16 intr_cfg_reg;
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s16 intr_status_reg;
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s16 intr_target_reg;
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unsigned mux_bit:5;
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unsigned pull_bit:5;
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unsigned drv_bit:5;
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unsigned oe_bit:5;
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unsigned in_bit:5;
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unsigned out_bit:5;
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unsigned intr_enable_bit:5;
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unsigned intr_status_bit:5;
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unsigned intr_target_bit:5;
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unsigned intr_raw_status_bit:5;
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unsigned intr_polarity_bit:5;
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unsigned intr_detection_bit:5;
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unsigned intr_detection_width:5;
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};
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/**
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* struct msm_pinctrl_soc_data - Qualcomm pin controller driver configuration
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* @pins: An array describing all pins the pin controller affects.
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* @npins: The number of entries in @pins.
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* @functions: An array describing all mux functions the SoC supports.
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* @nfunctions: The number of entries in @functions.
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* @groups: An array describing all pin groups the pin SoC supports.
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* @ngroups: The numbmer of entries in @groups.
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* @ngpio: The number of pingroups the driver should expose as GPIOs.
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*/
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struct msm_pinctrl_soc_data {
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const struct pinctrl_pin_desc *pins;
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unsigned npins;
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const struct msm_function *functions;
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unsigned nfunctions;
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const struct msm_pingroup *groups;
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unsigned ngroups;
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unsigned ngpios;
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};
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int msm_pinctrl_probe(struct platform_device *pdev,
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const struct msm_pinctrl_soc_data *soc_data);
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int msm_pinctrl_remove(struct platform_device *pdev);
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#endif
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