91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2016-2019, The Linux Foundation. All rights reserved.
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* Copyright (c) 2020 Linaro Ltd.
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*/
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#ifndef __PINCTRL_LPASS_LPI_H__
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#define __PINCTRL_LPASS_LPI_H__
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#include <linux/bits.h>
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#include <linux/kernel.h>
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#include "../core.h"
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struct platform_device;
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struct pinctrl_pin_desc;
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#define LPI_SLEW_RATE_CTL_REG 0xa000
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#define LPI_TLMM_REG_OFFSET 0x1000
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#define LPI_SLEW_RATE_MAX 0x03
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#define LPI_SLEW_BITS_SIZE 0x02
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#define LPI_SLEW_RATE_MASK GENMASK(1, 0)
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#define LPI_GPIO_CFG_REG 0x00
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#define LPI_GPIO_PULL_MASK GENMASK(1, 0)
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#define LPI_GPIO_FUNCTION_MASK GENMASK(5, 2)
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#define LPI_GPIO_OUT_STRENGTH_MASK GENMASK(8, 6)
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#define LPI_GPIO_OE_MASK BIT(9)
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#define LPI_GPIO_VALUE_REG 0x04
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#define LPI_GPIO_VALUE_IN_MASK BIT(0)
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#define LPI_GPIO_VALUE_OUT_MASK BIT(1)
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#define LPI_GPIO_BIAS_DISABLE 0x0
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#define LPI_GPIO_PULL_DOWN 0x1
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#define LPI_GPIO_KEEPER 0x2
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#define LPI_GPIO_PULL_UP 0x3
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#define LPI_GPIO_DS_TO_VAL(v) (v / 2 - 1)
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#define LPI_NO_SLEW -1
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#define LPI_FUNCTION(fname) \
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[LPI_MUX_##fname] = { \
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.name = #fname, \
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.groups = fname##_groups, \
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.ngroups = ARRAY_SIZE(fname##_groups), \
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}
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#define LPI_PINGROUP(id, soff, f1, f2, f3, f4) \
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{ \
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.group.name = "gpio" #id, \
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.group.pins = gpio##id##_pins, \
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.pin = id, \
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.slew_offset = soff, \
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.group.num_pins = ARRAY_SIZE(gpio##id##_pins), \
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.funcs = (int[]){ \
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LPI_MUX_gpio, \
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LPI_MUX_##f1, \
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LPI_MUX_##f2, \
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LPI_MUX_##f3, \
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LPI_MUX_##f4, \
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}, \
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.nfuncs = 5, \
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}
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struct lpi_pingroup {
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struct group_desc group;
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unsigned int pin;
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/* Bit offset in slew register for SoundWire pins only */
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int slew_offset;
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unsigned int *funcs;
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unsigned int nfuncs;
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};
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struct lpi_function {
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const char *name;
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const char * const *groups;
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unsigned int ngroups;
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};
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struct lpi_pinctrl_variant_data {
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const struct pinctrl_pin_desc *pins;
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int npins;
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const struct lpi_pingroup *groups;
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int ngroups;
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const struct lpi_function *functions;
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int nfunctions;
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};
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int lpi_pinctrl_probe(struct platform_device *pdev);
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int lpi_pinctrl_remove(struct platform_device *pdev);
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#endif /*__PINCTRL_LPASS_LPI_H__*/
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