| /* |
| * Copyright (c) 2014 MediaTek Inc. |
| * Author: Hongzhou.Yang <hongzhou.yang@mediatek.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #ifndef __PINCTRL_MTK_COMMON_H |
| #define __PINCTRL_MTK_COMMON_H |
| |
| #include <linux/pinctrl/pinctrl.h> |
| #include <linux/spinlock.h> |
| #include <linux/regmap.h> |
| |
| #define NO_EINT_SUPPORT 255 |
| |
| struct mtk_desc_function { |
| const char *name; |
| unsigned char muxval; |
| }; |
| |
| struct mtk_desc_eint { |
| unsigned char eintmux; |
| unsigned char eintnum; |
| }; |
| |
| struct mtk_desc_pin { |
| struct pinctrl_pin_desc pin; |
| const char *chip; |
| const struct mtk_desc_eint eint; |
| const struct mtk_desc_function *functions; |
| }; |
| |
| #define MTK_PIN(_pin, _pad, _chip, _eint, ...) \ |
| { \ |
| .pin = _pin, \ |
| .chip = _chip, \ |
| .eint = _eint, \ |
| .functions = (struct mtk_desc_function[]){ \ |
| __VA_ARGS__, { } }, \ |
| } |
| |
| #define MTK_EINT_FUNCTION(_eintmux, _eintnum) \ |
| { \ |
| .eintmux = _eintmux, \ |
| .eintnum = _eintnum, \ |
| } |
| |
| #define MTK_FUNCTION(_val, _name) \ |
| { \ |
| .muxval = _val, \ |
| .name = _name, \ |
| } |
| |
| #define SET_ADDR(x, y) (x + (y->devdata->port_align)) |
| #define CLR_ADDR(x, y) (x + (y->devdata->port_align << 1)) |
| |
| struct mtk_pinctrl_group { |
| const char *name; |
| unsigned long config; |
| unsigned pin; |
| }; |
| |
| /** |
| * struct mtk_drv_group_desc - Provide driving group data. |
| * @max_drv: The maximum current of this group. |
| * @min_drv: The minimum current of this group. |
| * @low_bit: The lowest bit of this group. |
| * @high_bit: The highest bit of this group. |
| * @step: The step current of this group. |
| */ |
| struct mtk_drv_group_desc { |
| unsigned char min_drv; |
| unsigned char max_drv; |
| unsigned char low_bit; |
| unsigned char high_bit; |
| unsigned char step; |
| }; |
| |
| #define MTK_DRV_GRP(_min, _max, _low, _high, _step) \ |
| { \ |
| .min_drv = _min, \ |
| .max_drv = _max, \ |
| .low_bit = _low, \ |
| .high_bit = _high, \ |
| .step = _step, \ |
| } |
| |
| /** |
| * struct mtk_pin_drv_grp - Provide each pin driving info. |
| * @pin: The pin number. |
| * @offset: The offset of driving register for this pin. |
| * @bit: The bit of driving register for this pin. |
| * @grp: The group for this pin belongs to. |
| */ |
| struct mtk_pin_drv_grp { |
| unsigned int pin; |
| unsigned int offset; |
| unsigned char bit; |
| unsigned char grp; |
| }; |
| |
| #define MTK_PIN_DRV_GRP(_pin, _offset, _bit, _grp) \ |
| { \ |
| .pin = _pin, \ |
| .offset = _offset, \ |
| .bit = _bit, \ |
| .grp = _grp, \ |
| } |
| |
| /** |
| * struct mtk_pinctrl_devdata - Provide HW GPIO related data. |
| * @pins: An array describing all pins the pin controller affects. |
| * @npins: The number of entries in @pins. |
| * |
| * @grp_desc: The driving group info. |
| * @pin_drv_grp: The driving group for all pins. |
| * @spec_pull_set: Each SoC may have special pins for pull up/down setting, |
| * these pins' pull setting are very different, they have separate pull |
| * up/down bit, R0 and R1 resistor bit, so they need special pull setting. |
| * If special setting is success, this should return 0, otherwise it should |
| * return non-zero value. |
| * |
| * @dir_offset: The direction register offset. |
| * @pullen_offset: The pull-up/pull-down enable register offset. |
| * @pinmux_offset: The pinmux register offset. |
| * |
| * @type1_start: Some chips have two base addresses for pull select register, |
| * that means some pins use the first address and others use the second. This |
| * member record the start of pin number to use the second address. |
| * @type1_end: The end of pin number to use the second address. |
| * |
| * @port_shf: The shift between two registers. |
| * @port_mask: The mask of register. |
| * @port_align: Provide clear register and set register step. |
| */ |
| struct mtk_pinctrl_devdata { |
| const struct mtk_desc_pin *pins; |
| unsigned int npins; |
| const struct mtk_drv_group_desc *grp_desc; |
| unsigned int n_grp_cls; |
| const struct mtk_pin_drv_grp *pin_drv_grp; |
| unsigned int n_pin_drv_grps; |
| int (*spec_pull_set)(struct regmap *reg, unsigned int pin, |
| unsigned char align, bool isup, unsigned int arg); |
| unsigned int dir_offset; |
| unsigned int ies_offset; |
| unsigned int smt_offset; |
| unsigned int pullen_offset; |
| unsigned int pullsel_offset; |
| unsigned int drv_offset; |
| unsigned int invser_offset; |
| unsigned int dout_offset; |
| unsigned int din_offset; |
| unsigned int pinmux_offset; |
| unsigned short type1_start; |
| unsigned short type1_end; |
| unsigned char port_shf; |
| unsigned char port_mask; |
| unsigned char port_align; |
| }; |
| |
| struct mtk_pinctrl { |
| struct regmap *regmap1; |
| struct regmap *regmap2; |
| struct device *dev; |
| struct gpio_chip *chip; |
| struct mtk_pinctrl_group *groups; |
| unsigned ngroups; |
| const char **grp_names; |
| struct pinctrl_dev *pctl_dev; |
| const struct mtk_pinctrl_devdata *devdata; |
| }; |
| |
| int mtk_pctrl_init(struct platform_device *pdev, |
| const struct mtk_pinctrl_devdata *data); |
| |
| #endif /* __PINCTRL_MTK_COMMON_H */ |