1 /* 2 * Copyright (C) 2015-2016 Socionext Inc. 3 * Author: Masahiro Yamada <yamada.masahiro@socionext.com> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #ifndef __PINCTRL_UNIPHIER_H__ 9 #define __PINCTRL_UNIPHIER_H__ 10 11 #include <linux/bitops.h> 12 #include <linux/bug.h> 13 #include <linux/kernel.h> 14 #include <linux/types.h> 15 16 #define UNIPHIER_PIN_ATTR_PACKED(iectrl) (iectrl) 17 18 static inline unsigned int uniphier_pin_get_iectrl(unsigned long data) 19 { 20 return data; 21 } 22 23 /** 24 * struct uniphier_pinctrl_pin - pin data for UniPhier SoC 25 * 26 * @number: pin number 27 * @data: additional per-pin data 28 */ 29 struct uniphier_pinctrl_pin { 30 unsigned number; 31 unsigned long data; 32 }; 33 34 /** 35 * struct uniphier_pinctrl_group - pin group data for UniPhier SoC 36 * 37 * @name: pin group name 38 * @pins: array of pins that belong to the group 39 * @num_pins: number of pins in the group 40 * @muxvals: array of values to be set to pinmux registers 41 */ 42 struct uniphier_pinctrl_group { 43 const char *name; 44 const unsigned *pins; 45 unsigned num_pins; 46 const int *muxvals; 47 }; 48 49 /** 50 * struct uniphier_pinctrl_socdata - SoC data for UniPhier pin controller 51 * 52 * @pins: array of pin data 53 * @pins_count: number of pin data 54 * @groups: array of pin group data 55 * @groups_count: number of pin group data 56 * @functions: array of pinmux function names 57 * @functions_count: number of pinmux functions 58 * @mux_bits: bit width of each pinmux register 59 * @reg_stride: stride of pinmux register address 60 * @caps: SoC-specific capability flag 61 */ 62 struct uniphier_pinctrl_socdata { 63 const struct uniphier_pinctrl_pin *pins; 64 int pins_count; 65 const struct uniphier_pinctrl_group *groups; 66 int groups_count; 67 const char * const *functions; 68 int functions_count; 69 unsigned caps; 70 #define UNIPHIER_PINCTRL_CAPS_PERPIN_IECTRL BIT(1) 71 #define UNIPHIER_PINCTRL_CAPS_DBGMUX_SEPARATE BIT(0) 72 }; 73 74 #define UNIPHIER_PINCTRL_PIN(a, b) \ 75 { \ 76 .number = a, \ 77 .data = UNIPHIER_PIN_ATTR_PACKED(b), \ 78 } 79 80 #define __UNIPHIER_PINCTRL_GROUP(grp) \ 81 { \ 82 .name = #grp, \ 83 .pins = grp##_pins, \ 84 .num_pins = ARRAY_SIZE(grp##_pins), \ 85 .muxvals = grp##_muxvals + \ 86 BUILD_BUG_ON_ZERO(ARRAY_SIZE(grp##_pins) != \ 87 ARRAY_SIZE(grp##_muxvals)), \ 88 } 89 90 #define __UNIPHIER_PINMUX_FUNCTION(func) #func 91 92 #ifdef CONFIG_SPL_BUILD 93 #define UNIPHIER_PINCTRL_GROUP(grp) { .name = NULL } 94 #define UNIPHIER_PINMUX_FUNCTION(func) NULL 95 #else 96 #define UNIPHIER_PINCTRL_GROUP(grp) __UNIPHIER_PINCTRL_GROUP(grp) 97 #define UNIPHIER_PINMUX_FUNCTION(func) __UNIPHIER_PINMUX_FUNCTION(func) 98 #endif 99 100 #define UNIPHIER_PINCTRL_GROUP_SPL(grp) __UNIPHIER_PINCTRL_GROUP(grp) 101 #define UNIPHIER_PINMUX_FUNCTION_SPL(func) __UNIPHIER_PINMUX_FUNCTION(func) 102 103 /** 104 * struct uniphier_pinctrl_priv - private data for UniPhier pinctrl driver 105 * 106 * @base: base address of the pinctrl device 107 * @socdata: SoC specific data 108 */ 109 struct uniphier_pinctrl_priv { 110 void __iomem *base; 111 struct uniphier_pinctrl_socdata *socdata; 112 }; 113 114 extern const struct pinctrl_ops uniphier_pinctrl_ops; 115 116 int uniphier_pinctrl_probe(struct udevice *dev, 117 struct uniphier_pinctrl_socdata *socdata); 118 119 #endif /* __PINCTRL_UNIPHIER_H__ */ 120