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188 lines
5.8 KiB
188 lines
5.8 KiB
/* SPDX-License-Identifier: GPL-2.0+ */ |
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/* |
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* Copyright (C) 2015-2017 Socionext Inc. |
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* Author: Masahiro Yamada <[email protected]> |
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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/bits.h> |
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#include <linux/build_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 3 |
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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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#define UNIPHIER_PIN_IECTRL_EXIST 0 |
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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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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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}; |
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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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int (*get_gpio_muxval)(unsigned int pin, unsigned int gpio_offset); |
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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, mux) \ |
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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 = mux, \ |
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} |
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#define UNIPHIER_PINCTRL_GROUP(grp) \ |
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__UNIPHIER_PINCTRL_GROUP(grp, \ |
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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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#define UNIPHIER_PINCTRL_GROUP_GPIO(grp) \ |
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__UNIPHIER_PINCTRL_GROUP(grp, NULL) |
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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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const struct uniphier_pinctrl_socdata *socdata); |
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extern const struct dev_pm_ops uniphier_pinctrl_pm_ops; |
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#endif /* __PINCTRL_UNIPHIER_H__ */
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