pinctrl/qcom/pinctrl-lpass-lpi.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  * Copyright (c) 2016-2019, The Linux Foundation. All rights reserved.
0004  * Copyright (c) 2020 Linaro Ltd.
0005  */
0006 #ifndef __PINCTRL_LPASS_LPI_H__
0007 #define __PINCTRL_LPASS_LPI_H__
0008
0009 #include <linux/bitops.h>
0010 #include <linux/bitfield.h>
0011 #include "../core.h"
0012
0013 #define LPI_SLEW_RATE_CTL_REG   0xa000
0014 #define LPI_TLMM_REG_OFFSET     0x1000
0015 #define LPI_SLEW_RATE_MAX       0x03
0016 #define LPI_SLEW_BITS_SIZE      0x02
0017 #define LPI_SLEW_RATE_MASK      GENMASK(1, 0)
0018 #define LPI_GPIO_CFG_REG        0x00
0019 #define LPI_GPIO_PULL_MASK      GENMASK(1, 0)
0020 #define LPI_GPIO_FUNCTION_MASK      GENMASK(5, 2)
0021 #define LPI_GPIO_OUT_STRENGTH_MASK  GENMASK(8, 6)
0022 #define LPI_GPIO_OE_MASK        BIT(9)
0023 #define LPI_GPIO_VALUE_REG      0x04
0024 #define LPI_GPIO_VALUE_IN_MASK      BIT(0)
0025 #define LPI_GPIO_VALUE_OUT_MASK     BIT(1)
0026
0027 #define LPI_GPIO_BIAS_DISABLE       0x0
0028 #define LPI_GPIO_PULL_DOWN      0x1
0029 #define LPI_GPIO_KEEPER         0x2
0030 #define LPI_GPIO_PULL_UP        0x3
0031 #define LPI_GPIO_DS_TO_VAL(v)       (v / 2 - 1)
0032 #define LPI_NO_SLEW             -1
0033
0034 #define LPI_FUNCTION(fname)                         \
0035     [LPI_MUX_##fname] = {                       \
0036         .name = #fname,             \
0037         .groups = fname##_groups,               \
0038         .ngroups = ARRAY_SIZE(fname##_groups),  \
0039     }
0040
0041 #define LPI_PINGROUP(id, soff, f1, f2, f3, f4)      \
0042     {                       \
0043         .group.name = "gpio" #id,           \
0044         .group.pins = gpio##id##_pins,      \
0045         .pin = id,              \
0046         .slew_offset = soff,            \
0047         .group.num_pins = ARRAY_SIZE(gpio##id##_pins),  \
0048         .funcs = (int[]){           \
0049             LPI_MUX_gpio,           \
0050             LPI_MUX_##f1,           \
0051             LPI_MUX_##f2,           \
0052             LPI_MUX_##f3,           \
0053             LPI_MUX_##f4,           \
0054         },                  \
0055         .nfuncs = 5,                \
0056     }
0057
0058 struct lpi_pingroup {
0059     struct group_desc group;
0060     unsigned int pin;
0061     /* Bit offset in slew register for SoundWire pins only */
0062     int slew_offset;
0063     unsigned int *funcs;
0064     unsigned int nfuncs;
0065 };
0066
0067 struct lpi_function {
0068     const char *name;
0069     const char * const *groups;
0070     unsigned int ngroups;
0071 };
0072
0073 struct lpi_pinctrl_variant_data {
0074     const struct pinctrl_pin_desc *pins;
0075     int npins;
0076     const struct lpi_pingroup *groups;
0077     int ngroups;
0078     const struct lpi_function *functions;
0079     int nfunctions;
0080 };
0081
0082 int lpi_pinctrl_probe(struct platform_device *pdev);
0083 int lpi_pinctrl_remove(struct platform_device *pdev);
0084
0085 #endif /*__PINCTRL_LPASS_LPI_H__*/