forked from Minki/linux
8ef364b3ce
Since commit 3e030b0b4e ("pinctrl: uniphier: allow to have pinctrl
node under syscon node"), this driver has kept compatibility for the
old DT files. Several releases have passed since then, so remove
the obsoleted compatibles and clean up the code.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
212 lines
6.7 KiB
C
212 lines
6.7 KiB
C
/*
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* Copyright (C) 2015-2017 Socionext Inc.
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* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __PINCTRL_UNIPHIER_H__
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#define __PINCTRL_UNIPHIER_H__
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#include <linux/bitops.h>
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#include <linux/bug.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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struct platform_device;
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/* input enable control register bit */
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#define UNIPHIER_PIN_IECTRL_SHIFT 0
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#define UNIPHIER_PIN_IECTRL_BITS 8
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#define UNIPHIER_PIN_IECTRL_MASK ((1UL << (UNIPHIER_PIN_IECTRL_BITS)) \
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- 1)
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/* drive strength control register number */
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#define UNIPHIER_PIN_DRVCTRL_SHIFT ((UNIPHIER_PIN_IECTRL_SHIFT) + \
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(UNIPHIER_PIN_IECTRL_BITS))
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#define UNIPHIER_PIN_DRVCTRL_BITS 9
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#define UNIPHIER_PIN_DRVCTRL_MASK ((1UL << (UNIPHIER_PIN_DRVCTRL_BITS)) \
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- 1)
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/* drive control type */
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#define UNIPHIER_PIN_DRV_TYPE_SHIFT ((UNIPHIER_PIN_DRVCTRL_SHIFT) + \
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(UNIPHIER_PIN_DRVCTRL_BITS))
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#define UNIPHIER_PIN_DRV_TYPE_BITS 3
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#define UNIPHIER_PIN_DRV_TYPE_MASK ((1UL << (UNIPHIER_PIN_DRV_TYPE_BITS)) \
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- 1)
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/* pull-up / pull-down register number */
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#define UNIPHIER_PIN_PUPDCTRL_SHIFT ((UNIPHIER_PIN_DRV_TYPE_SHIFT) + \
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(UNIPHIER_PIN_DRV_TYPE_BITS))
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#define UNIPHIER_PIN_PUPDCTRL_BITS 9
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#define UNIPHIER_PIN_PUPDCTRL_MASK ((1UL << (UNIPHIER_PIN_PUPDCTRL_BITS))\
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- 1)
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/* direction of pull register */
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#define UNIPHIER_PIN_PULL_DIR_SHIFT ((UNIPHIER_PIN_PUPDCTRL_SHIFT) + \
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(UNIPHIER_PIN_PUPDCTRL_BITS))
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#define UNIPHIER_PIN_PULL_DIR_BITS 3
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#define UNIPHIER_PIN_PULL_DIR_MASK ((1UL << (UNIPHIER_PIN_PULL_DIR_BITS))\
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- 1)
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#if UNIPHIER_PIN_PULL_DIR_SHIFT + UNIPHIER_PIN_PULL_DIR_BITS > BITS_PER_LONG
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#error "unable to pack pin attributes."
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#endif
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#define UNIPHIER_PIN_IECTRL_NONE (UNIPHIER_PIN_IECTRL_MASK)
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/* drive control type */
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enum uniphier_pin_drv_type {
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UNIPHIER_PIN_DRV_1BIT, /* 2 level control: 4/8 mA */
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UNIPHIER_PIN_DRV_2BIT, /* 4 level control: 8/12/16/20 mA */
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UNIPHIER_PIN_DRV_3BIT, /* 8 level control: 4/5/7/9/11/12/14/16 mA */
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UNIPHIER_PIN_DRV_FIXED4, /* fixed to 4mA */
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UNIPHIER_PIN_DRV_FIXED5, /* fixed to 5mA */
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UNIPHIER_PIN_DRV_FIXED8, /* fixed to 8mA */
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UNIPHIER_PIN_DRV_NONE, /* no support (input only pin) */
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};
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/* direction of pull register (no pin supports bi-directional pull biasing) */
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enum uniphier_pin_pull_dir {
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UNIPHIER_PIN_PULL_UP, /* pull-up or disabled */
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UNIPHIER_PIN_PULL_DOWN, /* pull-down or disabled */
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UNIPHIER_PIN_PULL_UP_FIXED, /* always pull-up */
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UNIPHIER_PIN_PULL_DOWN_FIXED, /* always pull-down */
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UNIPHIER_PIN_PULL_NONE, /* no pull register */
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};
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#define UNIPHIER_PIN_IECTRL(x) \
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(((x) & (UNIPHIER_PIN_IECTRL_MASK)) << (UNIPHIER_PIN_IECTRL_SHIFT))
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#define UNIPHIER_PIN_DRVCTRL(x) \
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(((x) & (UNIPHIER_PIN_DRVCTRL_MASK)) << (UNIPHIER_PIN_DRVCTRL_SHIFT))
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#define UNIPHIER_PIN_DRV_TYPE(x) \
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(((x) & (UNIPHIER_PIN_DRV_TYPE_MASK)) << (UNIPHIER_PIN_DRV_TYPE_SHIFT))
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#define UNIPHIER_PIN_PUPDCTRL(x) \
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(((x) & (UNIPHIER_PIN_PUPDCTRL_MASK)) << (UNIPHIER_PIN_PUPDCTRL_SHIFT))
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#define UNIPHIER_PIN_PULL_DIR(x) \
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(((x) & (UNIPHIER_PIN_PULL_DIR_MASK)) << (UNIPHIER_PIN_PULL_DIR_SHIFT))
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#define UNIPHIER_PIN_ATTR_PACKED(iectrl, drvctrl, drv_type, pupdctrl, pull_dir)\
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(UNIPHIER_PIN_IECTRL(iectrl) | \
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UNIPHIER_PIN_DRVCTRL(drvctrl) | \
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UNIPHIER_PIN_DRV_TYPE(drv_type) | \
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UNIPHIER_PIN_PUPDCTRL(pupdctrl) | \
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UNIPHIER_PIN_PULL_DIR(pull_dir))
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static inline unsigned int uniphier_pin_get_iectrl(void *drv_data)
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{
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return ((unsigned long)drv_data >> UNIPHIER_PIN_IECTRL_SHIFT) &
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UNIPHIER_PIN_IECTRL_MASK;
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}
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static inline unsigned int uniphier_pin_get_drvctrl(void *drv_data)
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{
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return ((unsigned long)drv_data >> UNIPHIER_PIN_DRVCTRL_SHIFT) &
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UNIPHIER_PIN_DRVCTRL_MASK;
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}
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static inline unsigned int uniphier_pin_get_drv_type(void *drv_data)
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{
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return ((unsigned long)drv_data >> UNIPHIER_PIN_DRV_TYPE_SHIFT) &
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UNIPHIER_PIN_DRV_TYPE_MASK;
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}
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static inline unsigned int uniphier_pin_get_pupdctrl(void *drv_data)
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{
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return ((unsigned long)drv_data >> UNIPHIER_PIN_PUPDCTRL_SHIFT) &
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UNIPHIER_PIN_PUPDCTRL_MASK;
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}
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static inline unsigned int uniphier_pin_get_pull_dir(void *drv_data)
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{
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return ((unsigned long)drv_data >> UNIPHIER_PIN_PULL_DIR_SHIFT) &
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UNIPHIER_PIN_PULL_DIR_MASK;
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}
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enum uniphier_pinmux_gpio_range_type {
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UNIPHIER_PINMUX_GPIO_RANGE_PORT,
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UNIPHIER_PINMUX_GPIO_RANGE_IRQ,
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UNIPHIER_PINMUX_GPIO_RANGE_NONE,
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};
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struct uniphier_pinctrl_group {
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const char *name;
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const unsigned *pins;
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unsigned num_pins;
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const int *muxvals;
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enum uniphier_pinmux_gpio_range_type range_type;
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};
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struct uniphier_pinmux_function {
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const char *name;
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const char * const *groups;
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unsigned num_groups;
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};
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struct uniphier_pinctrl_socdata {
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const struct pinctrl_pin_desc *pins;
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unsigned int npins;
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const struct uniphier_pinctrl_group *groups;
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int groups_count;
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const struct uniphier_pinmux_function *functions;
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int functions_count;
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unsigned int caps;
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#define UNIPHIER_PINCTRL_CAPS_PERPIN_IECTRL BIT(1)
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#define UNIPHIER_PINCTRL_CAPS_DBGMUX_SEPARATE BIT(0)
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};
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#define UNIPHIER_PINCTRL_PIN(a, b, c, d, e, f, g) \
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{ \
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.number = a, \
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.name = b, \
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.drv_data = (void *)UNIPHIER_PIN_ATTR_PACKED(c, d, e, f, g), \
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}
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#define __UNIPHIER_PINCTRL_GROUP(grp, type) \
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{ \
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.name = #grp, \
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.pins = grp##_pins, \
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.num_pins = ARRAY_SIZE(grp##_pins), \
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.muxvals = grp##_muxvals + \
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BUILD_BUG_ON_ZERO(ARRAY_SIZE(grp##_pins) != \
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ARRAY_SIZE(grp##_muxvals)), \
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.range_type = type, \
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}
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#define UNIPHIER_PINCTRL_GROUP(grp) \
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__UNIPHIER_PINCTRL_GROUP(grp, UNIPHIER_PINMUX_GPIO_RANGE_NONE)
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#define UNIPHIER_PINCTRL_GROUP_GPIO_RANGE_PORT(grp) \
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__UNIPHIER_PINCTRL_GROUP(grp, UNIPHIER_PINMUX_GPIO_RANGE_PORT)
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#define UNIPHIER_PINCTRL_GROUP_GPIO_RANGE_IRQ(grp) \
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__UNIPHIER_PINCTRL_GROUP(grp, UNIPHIER_PINMUX_GPIO_RANGE_IRQ)
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#define UNIPHIER_PINCTRL_GROUP_SINGLE(grp, array, ofst) \
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{ \
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.name = #grp, \
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.pins = array##_pins + ofst, \
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.num_pins = 1, \
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.muxvals = array##_muxvals + ofst, \
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}
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#define UNIPHIER_PINMUX_FUNCTION(func) \
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{ \
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.name = #func, \
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.groups = func##_groups, \
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.num_groups = ARRAY_SIZE(func##_groups), \
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}
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int uniphier_pinctrl_probe(struct platform_device *pdev,
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struct uniphier_pinctrl_socdata *socdata);
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#endif /* __PINCTRL_UNIPHIER_H__ */
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