diff options
Diffstat (limited to 'drivers/pinctrl/mediatek/pinctrl-mtk-common.h')
| -rw-r--r-- | drivers/pinctrl/mediatek/pinctrl-mtk-common.h | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.h b/drivers/pinctrl/mediatek/pinctrl-mtk-common.h new file mode 100644 index 000000000..bf13eb0a6 --- /dev/null +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.h @@ -0,0 +1,296 @@ +/* + * 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/regmap.h> +#include <linux/pinctrl/pinconf-generic.h> + +#include "mtk-eint.h" + +#define NO_EINT_SUPPORT 255 +#define MT_EDGE_SENSITIVE 0 +#define MT_LEVEL_SENSITIVE 1 +#define EINT_DBNC_SET_DBNC_BITS 4 +#define EINT_DBNC_RST_BIT (0x1 << 1) +#define EINT_DBNC_SET_EN (0x1 << 0) + +#define MTK_PINCTRL_NOT_SUPPORT (0xffff) + +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 struct mtk_desc_eint eint; + const struct mtk_desc_function *functions; +}; + +#define MTK_PIN(_pin, _pad, _chip, _eint, ...) \ + { \ + .pin = _pin, \ + .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 short pin; + unsigned short 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_pin_spec_pupd_set_samereg + * - For special pins' pull up/down setting which resides in same register + * @pin: The pin number. + * @offset: The offset of special pull up/down setting register. + * @pupd_bit: The pull up/down bit in this register. + * @r0_bit: The r0 bit of pull resistor. + * @r1_bit: The r1 bit of pull resistor. + */ +struct mtk_pin_spec_pupd_set_samereg { + unsigned short pin; + unsigned short offset; + unsigned char pupd_bit; + unsigned char r1_bit; + unsigned char r0_bit; +}; + +#define MTK_PIN_PUPD_SPEC_SR(_pin, _offset, _pupd, _r1, _r0) \ + { \ + .pin = _pin, \ + .offset = _offset, \ + .pupd_bit = _pupd, \ + .r1_bit = _r1, \ + .r0_bit = _r0, \ + } + +/** + * struct mtk_pin_ies_set - For special pins' ies and smt setting. + * @start: The start pin number of those special pins. + * @end: The end pin number of those special pins. + * @offset: The offset of special setting register. + * @bit: The bit of special setting register. + */ +struct mtk_pin_ies_smt_set { + unsigned short start; + unsigned short end; + unsigned short offset; + unsigned char bit; +}; + +#define MTK_PIN_IES_SMT_SPEC(_start, _end, _offset, _bit) \ + { \ + .start = _start, \ + .end = _end, \ + .bit = _bit, \ + .offset = _offset, \ + } + +struct mtk_eint_offsets { + const char *name; + unsigned int stat; + unsigned int ack; + unsigned int mask; + unsigned int mask_set; + unsigned int mask_clr; + unsigned int sens; + unsigned int sens_set; + unsigned int sens_clr; + unsigned int soft; + unsigned int soft_set; + unsigned int soft_clr; + unsigned int pol; + unsigned int pol_set; + unsigned int pol_clr; + unsigned int dom_en; + unsigned int dbnc_ctrl; + unsigned int dbnc_set; + unsigned int dbnc_clr; + u8 port_mask; + u8 ports; +}; + +/** + * 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. + * @spec_ies_smt_set: Some pins are irregular, their input enable and smt + * control register are discontinuous, but they are mapping together. That + * means when user set smt, input enable is set at the same time. So they + * also need special control. If special control is success, this should + * return 0, otherwise return non-zero value. + * @spec_pinmux_set: In some cases, there are two pinmux functions share + * the same value in the same segment of pinmux control register. If user + * want to use one of the two functions, they need an extra bit setting to + * select the right one. + * @spec_dir_set: In very few SoCs, direction control registers are not + * arranged continuously, they may be cut to parts. So they need special + * dir setting. + + * @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); + int (*spec_ies_smt_set)(struct regmap *reg, unsigned int pin, + unsigned char align, int value, enum pin_config_param arg); + void (*spec_pinmux_set)(struct regmap *reg, unsigned int pin, + unsigned int mode); + void (*spec_dir_set)(unsigned int *reg_addr, unsigned int pin); + 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 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_eint_hw eint_hw; + struct mtk_eint_regs *eint_regs; +}; + +struct mtk_pinctrl { + struct regmap *regmap1; + struct regmap *regmap2; + struct pinctrl_desc pctl_desc; + 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; + struct mtk_eint *eint; +}; + +int mtk_pctrl_init(struct platform_device *pdev, + const struct mtk_pinctrl_devdata *data, + struct regmap *regmap); + +int mtk_pctrl_spec_pull_set_samereg(struct regmap *regmap, + const struct mtk_pin_spec_pupd_set_samereg *pupd_infos, + unsigned int info_num, unsigned int pin, + unsigned char align, bool isup, unsigned int r1r0); + +int mtk_pconf_spec_set_ies_smt_range(struct regmap *regmap, + const struct mtk_pin_ies_smt_set *ies_smt_infos, unsigned int info_num, + unsigned int pin, unsigned char align, int value); + +extern const struct dev_pm_ops mtk_eint_pm_ops; + +#endif /* __PINCTRL_MTK_COMMON_H */ |