373 lines
11 KiB
C
373 lines
11 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2018 MediaTek Inc.
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*
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* Author: Sean Wang <sean.wang@mediatek.com>
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*
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*/
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#ifndef __PINCTRL_MTK_COMMON_V2_H
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#define __PINCTRL_MTK_COMMON_V2_H
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#include <linux/gpio/driver.h>
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#define MTK_INPUT 0
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#define MTK_OUTPUT 1
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#define MTK_DISABLE 0
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#define MTK_ENABLE 1
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#define MTK_PULLDOWN 0
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#define MTK_PULLUP 1
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#define MTK_PULL_PU_PD_TYPE BIT(0)
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#define MTK_PULL_PULLSEL_TYPE BIT(1)
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#define MTK_PULL_PUPD_R1R0_TYPE BIT(2)
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/* MTK_PULL_RSEL_TYPE can select resistance and can be
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* turned on/off itself. But it can't be selected pull up/down
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*/
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#define MTK_PULL_RSEL_TYPE BIT(3)
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/* MTK_PULL_PU_PD_RSEL_TYPE is a type which is controlled by
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* MTK_PULL_PU_PD_TYPE and MTK_PULL_RSEL_TYPE.
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*/
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#define MTK_PULL_PU_PD_RSEL_TYPE (MTK_PULL_PU_PD_TYPE \
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| MTK_PULL_RSEL_TYPE)
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#define MTK_PULL_TYPE_MASK (MTK_PULL_PU_PD_TYPE |\
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MTK_PULL_PULLSEL_TYPE |\
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MTK_PULL_PUPD_R1R0_TYPE |\
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MTK_PULL_RSEL_TYPE)
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#define EINT_NA U16_MAX
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#define NO_EINT_SUPPORT EINT_NA
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#define PIN_FIELD_CALC(_s_pin, _e_pin, _i_base, _s_addr, _x_addrs, \
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_s_bit, _x_bits, _sz_reg, _fixed) { \
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.s_pin = _s_pin, \
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.e_pin = _e_pin, \
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.i_base = _i_base, \
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.s_addr = _s_addr, \
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.x_addrs = _x_addrs, \
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.s_bit = _s_bit, \
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.x_bits = _x_bits, \
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.sz_reg = _sz_reg, \
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.fixed = _fixed, \
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}
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#define PIN_FIELD(_s_pin, _e_pin, _s_addr, _x_addrs, _s_bit, _x_bits) \
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PIN_FIELD_CALC(_s_pin, _e_pin, 0, _s_addr, _x_addrs, _s_bit, \
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_x_bits, 32, 0)
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#define PINS_FIELD(_s_pin, _e_pin, _s_addr, _x_addrs, _s_bit, _x_bits) \
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PIN_FIELD_CALC(_s_pin, _e_pin, 0, _s_addr, _x_addrs, _s_bit, \
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_x_bits, 32, 1)
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#define PIN_RSEL(_s_pin, _e_pin, _rsel_index, _up_resl, _down_rsel) { \
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.s_pin = _s_pin, \
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.e_pin = _e_pin, \
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.rsel_index = _rsel_index, \
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.up_rsel = _up_resl, \
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.down_rsel = _down_rsel, \
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}
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/* List these attributes which could be modified for the pin */
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enum {
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PINCTRL_PIN_REG_MODE,
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PINCTRL_PIN_REG_DIR,
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PINCTRL_PIN_REG_DI,
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PINCTRL_PIN_REG_DO,
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PINCTRL_PIN_REG_SR,
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PINCTRL_PIN_REG_SMT,
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PINCTRL_PIN_REG_PD,
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PINCTRL_PIN_REG_PU,
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PINCTRL_PIN_REG_E4,
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PINCTRL_PIN_REG_E8,
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PINCTRL_PIN_REG_TDSEL,
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PINCTRL_PIN_REG_RDSEL,
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PINCTRL_PIN_REG_DRV,
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PINCTRL_PIN_REG_PUPD,
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PINCTRL_PIN_REG_R0,
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PINCTRL_PIN_REG_R1,
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PINCTRL_PIN_REG_IES,
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PINCTRL_PIN_REG_PULLEN,
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PINCTRL_PIN_REG_PULLSEL,
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PINCTRL_PIN_REG_DRV_EN,
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PINCTRL_PIN_REG_DRV_E0,
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PINCTRL_PIN_REG_DRV_E1,
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PINCTRL_PIN_REG_DRV_ADV,
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PINCTRL_PIN_REG_RSEL,
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PINCTRL_PIN_REG_MAX,
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};
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/* Group the pins by the driving current */
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enum {
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DRV_FIXED,
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DRV_GRP0,
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DRV_GRP1,
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DRV_GRP2,
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DRV_GRP3,
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DRV_GRP4,
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DRV_GRP_MAX,
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};
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static const char * const mtk_default_register_base_names[] __maybe_unused = {
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"base",
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};
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/* struct mtk_pin_field - the structure that holds the information of the field
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* used to describe the attribute for the pin
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* @base: the index pointing to the entry in base address list
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* @offset: the register offset relative to the base address
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* @mask: the mask used to filter out the field from the register
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* @bitpos: the start bit relative to the register
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* @next: the indication that the field would be extended to the
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next register
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*/
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struct mtk_pin_field {
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u8 index;
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u32 offset;
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u32 mask;
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u8 bitpos;
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u8 next;
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};
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/* struct mtk_pin_field_calc - the structure that holds the range providing
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* the guide used to look up the relevant field
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* @s_pin: the start pin within the range
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* @e_pin: the end pin within the range
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* @i_base: the index pointing to the entry in base address list
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* @s_addr: the start address for the range
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* @x_addrs: the address distance between two consecutive registers
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* within the range
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* @s_bit: the start bit for the first register within the range
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* @x_bits: the bit distance between two consecutive pins within
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* the range
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* @sz_reg: the size of bits in a register
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* @fixed: the consecutive pins share the same bits with the 1st
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* pin
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*/
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struct mtk_pin_field_calc {
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u16 s_pin;
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u16 e_pin;
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u8 i_base;
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u32 s_addr;
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u8 x_addrs;
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u8 s_bit;
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u8 x_bits;
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u8 sz_reg;
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u8 fixed;
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};
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/**
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* struct mtk_pin_rsel - the structure that provides bias resistance selection.
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* @s_pin: the start pin within the rsel range
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* @e_pin: the end pin within the rsel range
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* @rsel_index: the rsel bias resistance index
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* @up_rsel: the pullup rsel bias resistance value
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* @down_rsel: the pulldown rsel bias resistance value
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*/
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struct mtk_pin_rsel {
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u16 s_pin;
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u16 e_pin;
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u16 rsel_index;
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u32 up_rsel;
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u32 down_rsel;
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};
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/* struct mtk_pin_reg_calc - the structure that holds all ranges used to
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* determine which register the pin would make use of
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* for certain pin attribute.
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* @range: the start address for the range
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* @nranges: the number of items in the range
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*/
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struct mtk_pin_reg_calc {
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const struct mtk_pin_field_calc *range;
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unsigned int nranges;
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};
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/**
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* struct mtk_func_desc - the structure that providing information
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* all the funcs for this pin
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* @name: the name of function
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* @muxval: the mux to the function
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*/
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struct mtk_func_desc {
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const char *name;
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u8 muxval;
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};
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/**
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* struct mtk_eint_desc - the structure that providing information
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* for eint data per pin
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* @eint_m: the eint mux for this pin
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* @eitn_n: the eint number for this pin
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*/
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struct mtk_eint_desc {
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u16 eint_m;
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u16 eint_n;
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};
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/**
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* struct mtk_pin_desc - the structure that providing information
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* for each pin of chips
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* @number: unique pin number from the global pin number space
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* @name: name for this pin
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* @eint: the eint data for this pin
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* @drv_n: the index with the driving group
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* @funcs: all available functions for this pins (only used in
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* those drivers compatible to pinctrl-mtk-common.c-like
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* ones)
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*/
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struct mtk_pin_desc {
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unsigned int number;
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const char *name;
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struct mtk_eint_desc eint;
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u8 drv_n;
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struct mtk_func_desc *funcs;
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};
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struct mtk_pinctrl_group {
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const char *name;
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unsigned long config;
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unsigned pin;
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};
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struct mtk_pinctrl;
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/* struct mtk_pin_soc - the structure that holds SoC-specific data */
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struct mtk_pin_soc {
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const struct mtk_pin_reg_calc *reg_cal;
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const struct mtk_pin_desc *pins;
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unsigned int npins;
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const struct group_desc *grps;
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unsigned int ngrps;
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const struct function_desc *funcs;
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unsigned int nfuncs;
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const struct mtk_eint_regs *eint_regs;
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const struct mtk_eint_hw *eint_hw;
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/* Specific parameters per SoC */
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u8 gpio_m;
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bool ies_present;
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const char * const *base_names;
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unsigned int nbase_names;
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const unsigned int *pull_type;
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const struct mtk_pin_rsel *pin_rsel;
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unsigned int npin_rsel;
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/* Specific pinconfig operations */
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int (*bias_disable_set)(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc);
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int (*bias_disable_get)(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, int *res);
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int (*bias_set)(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, bool pullup);
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int (*bias_get)(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, bool pullup, int *res);
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int (*bias_set_combo)(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, u32 pullup, u32 arg);
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int (*bias_get_combo)(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, u32 *pullup, u32 *arg);
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int (*drive_set)(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, u32 arg);
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int (*drive_get)(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, int *val);
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int (*adv_pull_set)(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, bool pullup,
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u32 arg);
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int (*adv_pull_get)(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, bool pullup,
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u32 *val);
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int (*adv_drive_set)(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, u32 arg);
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int (*adv_drive_get)(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, u32 *val);
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/* Specific driver data */
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void *driver_data;
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};
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struct mtk_pinctrl {
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struct pinctrl_dev *pctrl;
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void __iomem **base;
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u8 nbase;
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struct device *dev;
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struct gpio_chip chip;
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const struct mtk_pin_soc *soc;
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struct mtk_eint *eint;
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struct mtk_pinctrl_group *groups;
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const char **grp_names;
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/* lock pin's register resource to avoid multiple threads issue*/
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spinlock_t lock;
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/* identify rsel setting by si unit or rsel define in dts node */
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bool rsel_si_unit;
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};
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void mtk_rmw(struct mtk_pinctrl *pctl, u8 i, u32 reg, u32 mask, u32 set);
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int mtk_hw_set_value(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc,
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int field, int value);
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int mtk_hw_get_value(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc,
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int field, int *value);
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int mtk_build_eint(struct mtk_pinctrl *hw, struct platform_device *pdev);
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int mtk_pinconf_bias_disable_set(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc);
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int mtk_pinconf_bias_disable_get(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, int *res);
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int mtk_pinconf_bias_set(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, bool pullup);
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int mtk_pinconf_bias_get(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, bool pullup,
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int *res);
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int mtk_pinconf_bias_disable_set_rev1(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc);
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int mtk_pinconf_bias_disable_get_rev1(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc,
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int *res);
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int mtk_pinconf_bias_set_rev1(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, bool pullup);
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int mtk_pinconf_bias_get_rev1(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, bool pullup,
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int *res);
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int mtk_pinconf_bias_set_combo(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc,
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u32 pullup, u32 enable);
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int mtk_pinconf_bias_get_combo(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc,
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u32 *pullup, u32 *enable);
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int mtk_pinconf_drive_set(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, u32 arg);
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int mtk_pinconf_drive_get(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, int *val);
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int mtk_pinconf_drive_set_rev1(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, u32 arg);
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int mtk_pinconf_drive_get_rev1(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, int *val);
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int mtk_pinconf_drive_set_raw(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, u32 arg);
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int mtk_pinconf_drive_get_raw(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, int *val);
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int mtk_pinconf_adv_pull_set(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, bool pullup,
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u32 arg);
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int mtk_pinconf_adv_pull_get(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, bool pullup,
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u32 *val);
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int mtk_pinconf_adv_drive_set(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, u32 arg);
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int mtk_pinconf_adv_drive_get(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, u32 *val);
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int mtk_pinconf_adv_drive_set_raw(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, u32 arg);
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int mtk_pinconf_adv_drive_get_raw(struct mtk_pinctrl *hw,
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const struct mtk_pin_desc *desc, u32 *val);
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bool mtk_is_virt_gpio(struct mtk_pinctrl *hw, unsigned int gpio_n);
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#endif /* __PINCTRL_MTK_COMMON_V2_H */
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