1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (c) 2016-2019, The Linux Foundation. All rights reserved. 4 * Copyright (c) 2020 Linaro Ltd. 5 */ 6 #ifndef __PINCTRL_LPASS_LPI_H__ 7 #define __PINCTRL_LPASS_LPI_H__ 8 9 #include <linux/array_size.h> 10 #include <linux/bits.h> 11 12 #include "../core.h" 13 14 struct platform_device; 15 16 struct pinctrl_pin_desc; 17 18 #define LPI_SLEW_RATE_CTL_REG 0xa000 19 #define LPI_TLMM_REG_OFFSET 0x1000 20 #define LPI_SLEW_RATE_MAX 0x03 21 #define LPI_SLEW_BITS_SIZE 0x02 22 #define LPI_SLEW_RATE_MASK GENMASK(1, 0) 23 #define LPI_GPIO_CFG_REG 0x00 24 #define LPI_GPIO_PULL_MASK GENMASK(1, 0) 25 #define LPI_GPIO_FUNCTION_MASK GENMASK(5, 2) 26 #define LPI_GPIO_OUT_STRENGTH_MASK GENMASK(8, 6) 27 #define LPI_GPIO_OE_MASK BIT(9) 28 #define LPI_GPIO_VALUE_REG 0x04 29 #define LPI_GPIO_VALUE_IN_MASK BIT(0) 30 #define LPI_GPIO_VALUE_OUT_MASK BIT(1) 31 32 #define LPI_GPIO_BIAS_DISABLE 0x0 33 #define LPI_GPIO_PULL_DOWN 0x1 34 #define LPI_GPIO_KEEPER 0x2 35 #define LPI_GPIO_PULL_UP 0x3 36 #define LPI_GPIO_DS_TO_VAL(v) (v / 2 - 1) 37 #define LPI_NO_SLEW -1 38 39 #define LPI_FUNCTION(fname) \ 40 [LPI_MUX_##fname] = { \ 41 .name = #fname, \ 42 .groups = fname##_groups, \ 43 .ngroups = ARRAY_SIZE(fname##_groups), \ 44 } 45 46 #define LPI_PINGROUP(id, soff, f1, f2, f3, f4) \ 47 { \ 48 .pin = id, \ 49 .slew_offset = soff, \ 50 .funcs = (int[]){ \ 51 LPI_MUX_gpio, \ 52 LPI_MUX_##f1, \ 53 LPI_MUX_##f2, \ 54 LPI_MUX_##f3, \ 55 LPI_MUX_##f4, \ 56 }, \ 57 .nfuncs = 5, \ 58 } 59 60 /* 61 * Slew rate control is done in the same register as rest of the 62 * pin configuration. 63 */ 64 #define LPI_FLAG_SLEW_RATE_SAME_REG BIT(0) 65 66 struct lpi_pingroup { 67 unsigned int pin; 68 /* Bit offset in slew register for SoundWire pins only */ 69 int slew_offset; 70 unsigned int *funcs; 71 unsigned int nfuncs; 72 }; 73 74 struct lpi_function { 75 const char *name; 76 const char * const *groups; 77 unsigned int ngroups; 78 }; 79 80 struct lpi_pinctrl_variant_data { 81 const struct pinctrl_pin_desc *pins; 82 int npins; 83 const struct lpi_pingroup *groups; 84 int ngroups; 85 const struct lpi_function *functions; 86 int nfunctions; 87 unsigned int flags; 88 }; 89 90 int lpi_pinctrl_probe(struct platform_device *pdev); 91 void lpi_pinctrl_remove(struct platform_device *pdev); 92 93 #endif /*__PINCTRL_LPASS_LPI_H__*/ 94