mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
93b0beae72
Driver uses alias from Device Tree as an index of pin controller data
array. In case of a wrong DTB or an out-of-tree DTB, the alias could be
outside of this data array leading to out-of-bounds access.
Depending on binary and memory layout, this could be handled properly
(showing error like "samsung-pinctrl 3860000.pinctrl: driver data not
available") or could lead to exceptions.
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: <stable@vger.kernel.org>
Fixes: 30574f0db1 ("pinctrl: add samsung pinctrl and gpiolib driver")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
405 lines
15 KiB
C
405 lines
15 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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//
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// Exynos ARMv8 specific support for Samsung pinctrl/gpiolib driver
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// with eint support.
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//
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// Copyright (c) 2012 Samsung Electronics Co., Ltd.
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// http://www.samsung.com
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// Copyright (c) 2012 Linaro Ltd
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// http://www.linaro.org
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// Copyright (c) 2017 Krzysztof Kozlowski <krzk@kernel.org>
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//
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// This file contains the Samsung Exynos specific information required by the
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// the Samsung pinctrl/gpiolib driver. It also includes the implementation of
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// external gpio and wakeup interrupt support.
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#include <linux/slab.h>
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#include <linux/soc/samsung/exynos-regs-pmu.h>
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#include "pinctrl-samsung.h"
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#include "pinctrl-exynos.h"
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static const struct samsung_pin_bank_type bank_type_off = {
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.fld_width = { 4, 1, 2, 2, 2, 2, },
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.reg_offset = { 0x00, 0x04, 0x08, 0x0c, 0x10, 0x14, },
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};
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static const struct samsung_pin_bank_type bank_type_alive = {
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.fld_width = { 4, 1, 2, 2, },
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.reg_offset = { 0x00, 0x04, 0x08, 0x0c, },
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};
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/* Exynos5433 has the 4bit widths for PINCFG_TYPE_DRV bitfields. */
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static const struct samsung_pin_bank_type exynos5433_bank_type_off = {
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.fld_width = { 4, 1, 2, 4, 2, 2, },
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.reg_offset = { 0x00, 0x04, 0x08, 0x0c, 0x10, 0x14, },
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};
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static const struct samsung_pin_bank_type exynos5433_bank_type_alive = {
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.fld_width = { 4, 1, 2, 4, },
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.reg_offset = { 0x00, 0x04, 0x08, 0x0c, },
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};
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/* Pad retention control code for accessing PMU regmap */
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static atomic_t exynos_shared_retention_refcnt;
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/* pin banks of exynos5433 pin-controller - ALIVE */
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static const struct samsung_pin_bank_data exynos5433_pin_banks0[] __initconst = {
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EXYNOS5433_PIN_BANK_EINTW(8, 0x000, "gpa0", 0x00),
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EXYNOS5433_PIN_BANK_EINTW(8, 0x020, "gpa1", 0x04),
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EXYNOS5433_PIN_BANK_EINTW(8, 0x040, "gpa2", 0x08),
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EXYNOS5433_PIN_BANK_EINTW(8, 0x060, "gpa3", 0x0c),
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EXYNOS5433_PIN_BANK_EINTW_EXT(8, 0x020, "gpf1", 0x1004, 1),
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EXYNOS5433_PIN_BANK_EINTW_EXT(4, 0x040, "gpf2", 0x1008, 1),
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EXYNOS5433_PIN_BANK_EINTW_EXT(4, 0x060, "gpf3", 0x100c, 1),
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EXYNOS5433_PIN_BANK_EINTW_EXT(8, 0x080, "gpf4", 0x1010, 1),
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EXYNOS5433_PIN_BANK_EINTW_EXT(8, 0x0a0, "gpf5", 0x1014, 1),
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};
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/* pin banks of exynos5433 pin-controller - AUD */
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static const struct samsung_pin_bank_data exynos5433_pin_banks1[] __initconst = {
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EXYNOS5433_PIN_BANK_EINTG(7, 0x000, "gpz0", 0x00),
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EXYNOS5433_PIN_BANK_EINTG(4, 0x020, "gpz1", 0x04),
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};
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/* pin banks of exynos5433 pin-controller - CPIF */
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static const struct samsung_pin_bank_data exynos5433_pin_banks2[] __initconst = {
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EXYNOS5433_PIN_BANK_EINTG(2, 0x000, "gpv6", 0x00),
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};
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/* pin banks of exynos5433 pin-controller - eSE */
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static const struct samsung_pin_bank_data exynos5433_pin_banks3[] __initconst = {
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EXYNOS5433_PIN_BANK_EINTG(3, 0x000, "gpj2", 0x00),
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};
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/* pin banks of exynos5433 pin-controller - FINGER */
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static const struct samsung_pin_bank_data exynos5433_pin_banks4[] __initconst = {
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EXYNOS5433_PIN_BANK_EINTG(4, 0x000, "gpd5", 0x00),
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};
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/* pin banks of exynos5433 pin-controller - FSYS */
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static const struct samsung_pin_bank_data exynos5433_pin_banks5[] __initconst = {
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EXYNOS5433_PIN_BANK_EINTG(6, 0x000, "gph1", 0x00),
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EXYNOS5433_PIN_BANK_EINTG(7, 0x020, "gpr4", 0x04),
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EXYNOS5433_PIN_BANK_EINTG(5, 0x040, "gpr0", 0x08),
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EXYNOS5433_PIN_BANK_EINTG(8, 0x060, "gpr1", 0x0c),
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EXYNOS5433_PIN_BANK_EINTG(2, 0x080, "gpr2", 0x10),
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EXYNOS5433_PIN_BANK_EINTG(8, 0x0a0, "gpr3", 0x14),
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};
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/* pin banks of exynos5433 pin-controller - IMEM */
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static const struct samsung_pin_bank_data exynos5433_pin_banks6[] __initconst = {
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EXYNOS5433_PIN_BANK_EINTG(8, 0x000, "gpf0", 0x00),
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};
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/* pin banks of exynos5433 pin-controller - NFC */
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static const struct samsung_pin_bank_data exynos5433_pin_banks7[] __initconst = {
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EXYNOS5433_PIN_BANK_EINTG(3, 0x000, "gpj0", 0x00),
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};
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/* pin banks of exynos5433 pin-controller - PERIC */
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static const struct samsung_pin_bank_data exynos5433_pin_banks8[] __initconst = {
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EXYNOS5433_PIN_BANK_EINTG(6, 0x000, "gpv7", 0x00),
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EXYNOS5433_PIN_BANK_EINTG(5, 0x020, "gpb0", 0x04),
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EXYNOS5433_PIN_BANK_EINTG(8, 0x040, "gpc0", 0x08),
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EXYNOS5433_PIN_BANK_EINTG(2, 0x060, "gpc1", 0x0c),
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EXYNOS5433_PIN_BANK_EINTG(6, 0x080, "gpc2", 0x10),
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EXYNOS5433_PIN_BANK_EINTG(8, 0x0a0, "gpc3", 0x14),
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EXYNOS5433_PIN_BANK_EINTG(2, 0x0c0, "gpg0", 0x18),
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EXYNOS5433_PIN_BANK_EINTG(4, 0x0e0, "gpd0", 0x1c),
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EXYNOS5433_PIN_BANK_EINTG(6, 0x100, "gpd1", 0x20),
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EXYNOS5433_PIN_BANK_EINTG(8, 0x120, "gpd2", 0x24),
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EXYNOS5433_PIN_BANK_EINTG(5, 0x140, "gpd4", 0x28),
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EXYNOS5433_PIN_BANK_EINTG(2, 0x160, "gpd8", 0x2c),
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EXYNOS5433_PIN_BANK_EINTG(7, 0x180, "gpd6", 0x30),
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EXYNOS5433_PIN_BANK_EINTG(3, 0x1a0, "gpd7", 0x34),
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EXYNOS5433_PIN_BANK_EINTG(5, 0x1c0, "gpg1", 0x38),
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EXYNOS5433_PIN_BANK_EINTG(2, 0x1e0, "gpg2", 0x3c),
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EXYNOS5433_PIN_BANK_EINTG(8, 0x200, "gpg3", 0x40),
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};
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/* pin banks of exynos5433 pin-controller - TOUCH */
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static const struct samsung_pin_bank_data exynos5433_pin_banks9[] __initconst = {
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EXYNOS5433_PIN_BANK_EINTG(3, 0x000, "gpj1", 0x00),
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};
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/* PMU pin retention groups registers for Exynos5433 (without audio & fsys) */
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static const u32 exynos5433_retention_regs[] = {
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EXYNOS5433_PAD_RETENTION_TOP_OPTION,
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EXYNOS5433_PAD_RETENTION_UART_OPTION,
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EXYNOS5433_PAD_RETENTION_EBIA_OPTION,
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EXYNOS5433_PAD_RETENTION_EBIB_OPTION,
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EXYNOS5433_PAD_RETENTION_SPI_OPTION,
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EXYNOS5433_PAD_RETENTION_MIF_OPTION,
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EXYNOS5433_PAD_RETENTION_USBXTI_OPTION,
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EXYNOS5433_PAD_RETENTION_BOOTLDO_OPTION,
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EXYNOS5433_PAD_RETENTION_UFS_OPTION,
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EXYNOS5433_PAD_RETENTION_FSYSGENIO_OPTION,
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};
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static const struct samsung_retention_data exynos5433_retention_data __initconst = {
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.regs = exynos5433_retention_regs,
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.nr_regs = ARRAY_SIZE(exynos5433_retention_regs),
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.value = EXYNOS_WAKEUP_FROM_LOWPWR,
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.refcnt = &exynos_shared_retention_refcnt,
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.init = exynos_retention_init,
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};
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/* PMU retention control for audio pins can be tied to audio pin bank */
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static const u32 exynos5433_audio_retention_regs[] = {
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EXYNOS5433_PAD_RETENTION_AUD_OPTION,
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};
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static const struct samsung_retention_data exynos5433_audio_retention_data __initconst = {
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.regs = exynos5433_audio_retention_regs,
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.nr_regs = ARRAY_SIZE(exynos5433_audio_retention_regs),
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.value = EXYNOS_WAKEUP_FROM_LOWPWR,
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.init = exynos_retention_init,
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};
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/* PMU retention control for mmc pins can be tied to fsys pin bank */
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static const u32 exynos5433_fsys_retention_regs[] = {
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EXYNOS5433_PAD_RETENTION_MMC0_OPTION,
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EXYNOS5433_PAD_RETENTION_MMC1_OPTION,
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EXYNOS5433_PAD_RETENTION_MMC2_OPTION,
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};
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static const struct samsung_retention_data exynos5433_fsys_retention_data __initconst = {
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.regs = exynos5433_fsys_retention_regs,
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.nr_regs = ARRAY_SIZE(exynos5433_fsys_retention_regs),
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.value = EXYNOS_WAKEUP_FROM_LOWPWR,
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.init = exynos_retention_init,
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};
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/*
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* Samsung pinctrl driver data for Exynos5433 SoC. Exynos5433 SoC includes
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* ten gpio/pin-mux/pinconfig controllers.
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*/
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static const struct samsung_pin_ctrl exynos5433_pin_ctrl[] __initconst = {
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{
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/* pin-controller instance 0 data */
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.pin_banks = exynos5433_pin_banks0,
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.nr_banks = ARRAY_SIZE(exynos5433_pin_banks0),
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.eint_wkup_init = exynos_eint_wkup_init,
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.suspend = exynos_pinctrl_suspend,
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.resume = exynos_pinctrl_resume,
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.nr_ext_resources = 1,
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.retention_data = &exynos5433_retention_data,
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}, {
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/* pin-controller instance 1 data */
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.pin_banks = exynos5433_pin_banks1,
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.nr_banks = ARRAY_SIZE(exynos5433_pin_banks1),
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.eint_gpio_init = exynos_eint_gpio_init,
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.suspend = exynos_pinctrl_suspend,
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.resume = exynos_pinctrl_resume,
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.retention_data = &exynos5433_audio_retention_data,
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}, {
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/* pin-controller instance 2 data */
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.pin_banks = exynos5433_pin_banks2,
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.nr_banks = ARRAY_SIZE(exynos5433_pin_banks2),
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.eint_gpio_init = exynos_eint_gpio_init,
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.suspend = exynos_pinctrl_suspend,
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.resume = exynos_pinctrl_resume,
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.retention_data = &exynos5433_retention_data,
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}, {
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/* pin-controller instance 3 data */
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.pin_banks = exynos5433_pin_banks3,
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.nr_banks = ARRAY_SIZE(exynos5433_pin_banks3),
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.eint_gpio_init = exynos_eint_gpio_init,
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.suspend = exynos_pinctrl_suspend,
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.resume = exynos_pinctrl_resume,
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.retention_data = &exynos5433_retention_data,
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}, {
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/* pin-controller instance 4 data */
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.pin_banks = exynos5433_pin_banks4,
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.nr_banks = ARRAY_SIZE(exynos5433_pin_banks4),
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.eint_gpio_init = exynos_eint_gpio_init,
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.suspend = exynos_pinctrl_suspend,
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.resume = exynos_pinctrl_resume,
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.retention_data = &exynos5433_retention_data,
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}, {
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/* pin-controller instance 5 data */
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.pin_banks = exynos5433_pin_banks5,
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.nr_banks = ARRAY_SIZE(exynos5433_pin_banks5),
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.eint_gpio_init = exynos_eint_gpio_init,
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.suspend = exynos_pinctrl_suspend,
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.resume = exynos_pinctrl_resume,
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.retention_data = &exynos5433_fsys_retention_data,
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}, {
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/* pin-controller instance 6 data */
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.pin_banks = exynos5433_pin_banks6,
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.nr_banks = ARRAY_SIZE(exynos5433_pin_banks6),
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.eint_gpio_init = exynos_eint_gpio_init,
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.suspend = exynos_pinctrl_suspend,
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.resume = exynos_pinctrl_resume,
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.retention_data = &exynos5433_retention_data,
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}, {
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/* pin-controller instance 7 data */
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.pin_banks = exynos5433_pin_banks7,
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.nr_banks = ARRAY_SIZE(exynos5433_pin_banks7),
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.eint_gpio_init = exynos_eint_gpio_init,
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.suspend = exynos_pinctrl_suspend,
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.resume = exynos_pinctrl_resume,
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.retention_data = &exynos5433_retention_data,
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}, {
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/* pin-controller instance 8 data */
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.pin_banks = exynos5433_pin_banks8,
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.nr_banks = ARRAY_SIZE(exynos5433_pin_banks8),
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.eint_gpio_init = exynos_eint_gpio_init,
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.suspend = exynos_pinctrl_suspend,
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.resume = exynos_pinctrl_resume,
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.retention_data = &exynos5433_retention_data,
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}, {
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/* pin-controller instance 9 data */
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.pin_banks = exynos5433_pin_banks9,
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.nr_banks = ARRAY_SIZE(exynos5433_pin_banks9),
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.eint_gpio_init = exynos_eint_gpio_init,
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.suspend = exynos_pinctrl_suspend,
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.resume = exynos_pinctrl_resume,
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.retention_data = &exynos5433_retention_data,
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},
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};
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const struct samsung_pinctrl_of_match_data exynos5433_of_data __initconst = {
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.ctrl = exynos5433_pin_ctrl,
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.num_ctrl = ARRAY_SIZE(exynos5433_pin_ctrl),
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};
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/* pin banks of exynos7 pin-controller - ALIVE */
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static const struct samsung_pin_bank_data exynos7_pin_banks0[] __initconst = {
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EXYNOS_PIN_BANK_EINTW(8, 0x000, "gpa0", 0x00),
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EXYNOS_PIN_BANK_EINTW(8, 0x020, "gpa1", 0x04),
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EXYNOS_PIN_BANK_EINTW(8, 0x040, "gpa2", 0x08),
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EXYNOS_PIN_BANK_EINTW(8, 0x060, "gpa3", 0x0c),
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};
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/* pin banks of exynos7 pin-controller - BUS0 */
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static const struct samsung_pin_bank_data exynos7_pin_banks1[] __initconst = {
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EXYNOS_PIN_BANK_EINTG(5, 0x000, "gpb0", 0x00),
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EXYNOS_PIN_BANK_EINTG(8, 0x020, "gpc0", 0x04),
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EXYNOS_PIN_BANK_EINTG(2, 0x040, "gpc1", 0x08),
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EXYNOS_PIN_BANK_EINTG(6, 0x060, "gpc2", 0x0c),
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EXYNOS_PIN_BANK_EINTG(8, 0x080, "gpc3", 0x10),
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EXYNOS_PIN_BANK_EINTG(4, 0x0a0, "gpd0", 0x14),
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EXYNOS_PIN_BANK_EINTG(6, 0x0c0, "gpd1", 0x18),
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EXYNOS_PIN_BANK_EINTG(8, 0x0e0, "gpd2", 0x1c),
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EXYNOS_PIN_BANK_EINTG(5, 0x100, "gpd4", 0x20),
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EXYNOS_PIN_BANK_EINTG(4, 0x120, "gpd5", 0x24),
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EXYNOS_PIN_BANK_EINTG(6, 0x140, "gpd6", 0x28),
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EXYNOS_PIN_BANK_EINTG(3, 0x160, "gpd7", 0x2c),
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EXYNOS_PIN_BANK_EINTG(2, 0x180, "gpd8", 0x30),
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EXYNOS_PIN_BANK_EINTG(2, 0x1a0, "gpg0", 0x34),
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EXYNOS_PIN_BANK_EINTG(4, 0x1c0, "gpg3", 0x38),
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};
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/* pin banks of exynos7 pin-controller - NFC */
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static const struct samsung_pin_bank_data exynos7_pin_banks2[] __initconst = {
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EXYNOS_PIN_BANK_EINTG(3, 0x000, "gpj0", 0x00),
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};
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/* pin banks of exynos7 pin-controller - TOUCH */
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static const struct samsung_pin_bank_data exynos7_pin_banks3[] __initconst = {
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EXYNOS_PIN_BANK_EINTG(3, 0x000, "gpj1", 0x00),
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};
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/* pin banks of exynos7 pin-controller - FF */
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static const struct samsung_pin_bank_data exynos7_pin_banks4[] __initconst = {
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EXYNOS_PIN_BANK_EINTG(4, 0x000, "gpg4", 0x00),
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};
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/* pin banks of exynos7 pin-controller - ESE */
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static const struct samsung_pin_bank_data exynos7_pin_banks5[] __initconst = {
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EXYNOS_PIN_BANK_EINTG(5, 0x000, "gpv7", 0x00),
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};
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/* pin banks of exynos7 pin-controller - FSYS0 */
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static const struct samsung_pin_bank_data exynos7_pin_banks6[] __initconst = {
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EXYNOS_PIN_BANK_EINTG(7, 0x000, "gpr4", 0x00),
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};
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/* pin banks of exynos7 pin-controller - FSYS1 */
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static const struct samsung_pin_bank_data exynos7_pin_banks7[] __initconst = {
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EXYNOS_PIN_BANK_EINTG(4, 0x000, "gpr0", 0x00),
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EXYNOS_PIN_BANK_EINTG(8, 0x020, "gpr1", 0x04),
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EXYNOS_PIN_BANK_EINTG(5, 0x040, "gpr2", 0x08),
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EXYNOS_PIN_BANK_EINTG(8, 0x060, "gpr3", 0x0c),
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};
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/* pin banks of exynos7 pin-controller - BUS1 */
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static const struct samsung_pin_bank_data exynos7_pin_banks8[] __initconst = {
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EXYNOS_PIN_BANK_EINTG(8, 0x020, "gpf0", 0x00),
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EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpf1", 0x04),
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EXYNOS_PIN_BANK_EINTG(4, 0x060, "gpf2", 0x08),
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EXYNOS_PIN_BANK_EINTG(5, 0x080, "gpf3", 0x0c),
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EXYNOS_PIN_BANK_EINTG(8, 0x0a0, "gpf4", 0x10),
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EXYNOS_PIN_BANK_EINTG(8, 0x0c0, "gpf5", 0x14),
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EXYNOS_PIN_BANK_EINTG(5, 0x0e0, "gpg1", 0x18),
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EXYNOS_PIN_BANK_EINTG(5, 0x100, "gpg2", 0x1c),
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EXYNOS_PIN_BANK_EINTG(6, 0x120, "gph1", 0x20),
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EXYNOS_PIN_BANK_EINTG(3, 0x140, "gpv6", 0x24),
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};
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|
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static const struct samsung_pin_bank_data exynos7_pin_banks9[] __initconst = {
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EXYNOS_PIN_BANK_EINTG(7, 0x000, "gpz0", 0x00),
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EXYNOS_PIN_BANK_EINTG(4, 0x020, "gpz1", 0x04),
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};
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static const struct samsung_pin_ctrl exynos7_pin_ctrl[] __initconst = {
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{
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/* pin-controller instance 0 Alive data */
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.pin_banks = exynos7_pin_banks0,
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.nr_banks = ARRAY_SIZE(exynos7_pin_banks0),
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.eint_wkup_init = exynos_eint_wkup_init,
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}, {
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/* pin-controller instance 1 BUS0 data */
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.pin_banks = exynos7_pin_banks1,
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.nr_banks = ARRAY_SIZE(exynos7_pin_banks1),
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.eint_gpio_init = exynos_eint_gpio_init,
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|
}, {
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|
/* pin-controller instance 2 NFC data */
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|
.pin_banks = exynos7_pin_banks2,
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|
.nr_banks = ARRAY_SIZE(exynos7_pin_banks2),
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|
.eint_gpio_init = exynos_eint_gpio_init,
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|
}, {
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|
/* pin-controller instance 3 TOUCH data */
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|
.pin_banks = exynos7_pin_banks3,
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|
.nr_banks = ARRAY_SIZE(exynos7_pin_banks3),
|
|
.eint_gpio_init = exynos_eint_gpio_init,
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|
}, {
|
|
/* pin-controller instance 4 FF data */
|
|
.pin_banks = exynos7_pin_banks4,
|
|
.nr_banks = ARRAY_SIZE(exynos7_pin_banks4),
|
|
.eint_gpio_init = exynos_eint_gpio_init,
|
|
}, {
|
|
/* pin-controller instance 5 ESE data */
|
|
.pin_banks = exynos7_pin_banks5,
|
|
.nr_banks = ARRAY_SIZE(exynos7_pin_banks5),
|
|
.eint_gpio_init = exynos_eint_gpio_init,
|
|
}, {
|
|
/* pin-controller instance 6 FSYS0 data */
|
|
.pin_banks = exynos7_pin_banks6,
|
|
.nr_banks = ARRAY_SIZE(exynos7_pin_banks6),
|
|
.eint_gpio_init = exynos_eint_gpio_init,
|
|
}, {
|
|
/* pin-controller instance 7 FSYS1 data */
|
|
.pin_banks = exynos7_pin_banks7,
|
|
.nr_banks = ARRAY_SIZE(exynos7_pin_banks7),
|
|
.eint_gpio_init = exynos_eint_gpio_init,
|
|
}, {
|
|
/* pin-controller instance 8 BUS1 data */
|
|
.pin_banks = exynos7_pin_banks8,
|
|
.nr_banks = ARRAY_SIZE(exynos7_pin_banks8),
|
|
.eint_gpio_init = exynos_eint_gpio_init,
|
|
}, {
|
|
/* pin-controller instance 9 AUD data */
|
|
.pin_banks = exynos7_pin_banks9,
|
|
.nr_banks = ARRAY_SIZE(exynos7_pin_banks9),
|
|
.eint_gpio_init = exynos_eint_gpio_init,
|
|
},
|
|
};
|
|
|
|
const struct samsung_pinctrl_of_match_data exynos7_of_data __initconst = {
|
|
.ctrl = exynos7_pin_ctrl,
|
|
.num_ctrl = ARRAY_SIZE(exynos7_pin_ctrl),
|
|
};
|