mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-02 17:41:08 +00:00
6a6b9d5dfd
Support the following DT properties: "bias-disable" "bias-pull-up" "bias-pull-down" "bias-pull-pin-default" "input-enable" "input-disable" My main motivation is to support pull up/down biasing. For Pro5 and later SoCs, the pupdctrl register number is the same as the pinmux number, so this feature can be supported without having big pin tables. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
126 lines
3.3 KiB
C
126 lines
3.3 KiB
C
/*
|
|
* Copyright (C) 2015-2016 Socionext Inc.
|
|
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#ifndef __PINCTRL_UNIPHIER_H__
|
|
#define __PINCTRL_UNIPHIER_H__
|
|
|
|
#include <linux/bitops.h>
|
|
#include <linux/bug.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/types.h>
|
|
|
|
#define UNIPHIER_PIN_ATTR_PACKED(iectrl) (iectrl)
|
|
|
|
static inline unsigned int uniphier_pin_get_iectrl(unsigned long data)
|
|
{
|
|
return data;
|
|
}
|
|
|
|
/**
|
|
* struct uniphier_pinctrl_pin - pin data for UniPhier SoC
|
|
*
|
|
* @number: pin number
|
|
* @data: additional per-pin data
|
|
*/
|
|
struct uniphier_pinctrl_pin {
|
|
unsigned number;
|
|
unsigned long data;
|
|
};
|
|
|
|
/**
|
|
* struct uniphier_pinctrl_group - pin group data for UniPhier SoC
|
|
*
|
|
* @name: pin group name
|
|
* @pins: array of pins that belong to the group
|
|
* @num_pins: number of pins in the group
|
|
* @muxvals: array of values to be set to pinmux registers
|
|
*/
|
|
struct uniphier_pinctrl_group {
|
|
const char *name;
|
|
const unsigned *pins;
|
|
unsigned num_pins;
|
|
const int *muxvals;
|
|
};
|
|
|
|
/**
|
|
* struct uniphier_pinctrl_socdata - SoC data for UniPhier pin controller
|
|
*
|
|
* @pins: array of pin data
|
|
* @pins_count: number of pin data
|
|
* @groups: array of pin group data
|
|
* @groups_count: number of pin group data
|
|
* @functions: array of pinmux function names
|
|
* @functions_count: number of pinmux functions
|
|
* @mux_bits: bit width of each pinmux register
|
|
* @reg_stride: stride of pinmux register address
|
|
* @caps: SoC-specific capability flag
|
|
*/
|
|
struct uniphier_pinctrl_socdata {
|
|
const struct uniphier_pinctrl_pin *pins;
|
|
int pins_count;
|
|
const struct uniphier_pinctrl_group *groups;
|
|
int groups_count;
|
|
const char * const *functions;
|
|
int functions_count;
|
|
unsigned caps;
|
|
#define UNIPHIER_PINCTRL_CAPS_PUPD_SIMPLE BIT(3)
|
|
#define UNIPHIER_PINCTRL_CAPS_PERPIN_IECTRL BIT(2)
|
|
#define UNIPHIER_PINCTRL_CAPS_DBGMUX_SEPARATE BIT(1)
|
|
#define UNIPHIER_PINCTRL_CAPS_MUX_4BIT BIT(0)
|
|
};
|
|
|
|
#define UNIPHIER_PINCTRL_PIN(a, b) \
|
|
{ \
|
|
.number = a, \
|
|
.data = UNIPHIER_PIN_ATTR_PACKED(b), \
|
|
}
|
|
|
|
#define __UNIPHIER_PINCTRL_GROUP(grp) \
|
|
{ \
|
|
.name = #grp, \
|
|
.pins = grp##_pins, \
|
|
.num_pins = ARRAY_SIZE(grp##_pins), \
|
|
.muxvals = grp##_muxvals + \
|
|
BUILD_BUG_ON_ZERO(ARRAY_SIZE(grp##_pins) != \
|
|
ARRAY_SIZE(grp##_muxvals)), \
|
|
}
|
|
|
|
#define __UNIPHIER_PINMUX_FUNCTION(func) #func
|
|
|
|
#ifdef CONFIG_SPL_BUILD
|
|
/*
|
|
* a tricky way to drop unneeded *_pins and *_muxvals arrays from SPL,
|
|
* suppressing "defined but not used" warnings.
|
|
*/
|
|
#define UNIPHIER_PINCTRL_GROUP(grp) \
|
|
{ .num_pins = ARRAY_SIZE(grp##_pins) + ARRAY_SIZE(grp##_muxvals) }
|
|
#define UNIPHIER_PINMUX_FUNCTION(func) NULL
|
|
#else
|
|
#define UNIPHIER_PINCTRL_GROUP(grp) __UNIPHIER_PINCTRL_GROUP(grp)
|
|
#define UNIPHIER_PINMUX_FUNCTION(func) __UNIPHIER_PINMUX_FUNCTION(func)
|
|
#endif
|
|
|
|
#define UNIPHIER_PINCTRL_GROUP_SPL(grp) __UNIPHIER_PINCTRL_GROUP(grp)
|
|
#define UNIPHIER_PINMUX_FUNCTION_SPL(func) __UNIPHIER_PINMUX_FUNCTION(func)
|
|
|
|
/**
|
|
* struct uniphier_pinctrl_priv - private data for UniPhier pinctrl driver
|
|
*
|
|
* @base: base address of the pinctrl device
|
|
* @socdata: SoC specific data
|
|
*/
|
|
struct uniphier_pinctrl_priv {
|
|
void __iomem *base;
|
|
struct uniphier_pinctrl_socdata *socdata;
|
|
};
|
|
|
|
extern const struct pinctrl_ops uniphier_pinctrl_ops;
|
|
|
|
int uniphier_pinctrl_probe(struct udevice *dev,
|
|
struct uniphier_pinctrl_socdata *socdata);
|
|
|
|
#endif /* __PINCTRL_UNIPHIER_H__ */
|