projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| d2c19e89 P |
1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | /* | |
| 3 | * Intel Tangier GPIO functions | |
| 4 | * | |
| 5 | * Copyright (c) 2016, 2021, 2023 Intel Corporation. | |
| 6 | * | |
| 7 | * Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com> | |
| 8 | * Pandith N <pandith.n@intel.com> | |
| 9 | * Raag Jadav <raag.jadav@intel.com> | |
| 10 | */ | |
| 11 | ||
| 12 | #ifndef _GPIO_TANGIER_H_ | |
| 13 | #define _GPIO_TANGIER_H_ | |
| 14 | ||
| 15 | #include <linux/gpio/driver.h> | |
| 16 | #include <linux/spinlock_types.h> | |
| 17 | #include <linux/types.h> | |
| 18 | ||
| 19 | struct device; | |
| 20 | ||
| 21 | struct tng_gpio_context; | |
| 22 | ||
| 9409d8cf P |
23 | /* Elkhart Lake specific wake registers */ |
| 24 | #define GWMR_EHL 0x100 /* Wake mask */ | |
| 25 | #define GWSR_EHL 0x118 /* Wake source */ | |
| 26 | #define GSIR_EHL 0x130 /* Secure input */ | |
| 27 | ||
| 34840be5 P |
28 | /* Merrifield specific wake registers */ |
| 29 | #define GWMR_MRFLD 0x400 /* Wake mask */ | |
| 30 | #define GWSR_MRFLD 0x418 /* Wake source */ | |
| 31 | #define GSIR_MRFLD 0xc00 /* Secure input */ | |
| 32 | ||
| d2c19e89 P |
33 | /** |
| 34 | * struct tng_wake_regs - Platform specific wake registers | |
| 35 | * @gwmr: Wake mask | |
| 36 | * @gwsr: Wake source | |
| 37 | * @gsir: Secure input | |
| 38 | */ | |
| 39 | struct tng_wake_regs { | |
| 40 | u32 gwmr; | |
| 41 | u32 gwsr; | |
| 42 | u32 gsir; | |
| 43 | }; | |
| 44 | ||
| 45 | /** | |
| 46 | * struct tng_gpio_pinrange - Map pin numbers to gpio numbers | |
| 47 | * @gpio_base: Starting GPIO number of this range | |
| 48 | * @pin_base: Starting pin number of this range | |
| 49 | * @npins: Number of pins in this range | |
| 50 | */ | |
| 51 | struct tng_gpio_pinrange { | |
| 52 | unsigned int gpio_base; | |
| 53 | unsigned int pin_base; | |
| 54 | unsigned int npins; | |
| 55 | }; | |
| 56 | ||
| 57 | #define GPIO_PINRANGE(gstart, gend, pstart) \ | |
| 58 | (struct tng_gpio_pinrange) { \ | |
| 59 | .gpio_base = (gstart), \ | |
| 60 | .pin_base = (pstart), \ | |
| 61 | .npins = (gend) - (gstart) + 1, \ | |
| 62 | } | |
| 63 | ||
| 64 | /** | |
| 65 | * struct tng_gpio_pin_info - Platform specific pinout information | |
| 66 | * @pin_ranges: Pin to GPIO mapping | |
| 67 | * @nranges: Number of pin ranges | |
| 68 | * @name: Respective pinctrl device name | |
| 69 | */ | |
| 70 | struct tng_gpio_pin_info { | |
| 71 | const struct tng_gpio_pinrange *pin_ranges; | |
| 72 | unsigned int nranges; | |
| 73 | const char *name; | |
| 74 | }; | |
| 75 | ||
| 76 | /** | |
| 77 | * struct tng_gpio_info - Platform specific GPIO and IRQ information | |
| 78 | * @base: GPIO base to start numbering with | |
| 79 | * @ngpio: Amount of GPIOs supported by the controller | |
| 80 | * @first: First IRQ to start numbering with | |
| 81 | */ | |
| 82 | struct tng_gpio_info { | |
| 83 | int base; | |
| 84 | u16 ngpio; | |
| 85 | unsigned int first; | |
| 86 | }; | |
| 87 | ||
| 88 | /** | |
| 89 | * struct tng_gpio - Platform specific private data | |
| 90 | * @chip: Instance of the struct gpio_chip | |
| 91 | * @reg_base: Base address of MMIO registers | |
| 92 | * @irq: Interrupt for the GPIO device | |
| 93 | * @lock: Synchronization lock to prevent I/O race conditions | |
| 94 | * @dev: The GPIO device | |
| 95 | * @ctx: Context to be saved during suspend-resume | |
| 96 | * @wake_regs: Platform specific wake registers | |
| 97 | * @pin_info: Platform specific pinout information | |
| 98 | * @info: Platform specific GPIO and IRQ information | |
| 99 | */ | |
| 100 | struct tng_gpio { | |
| 101 | struct gpio_chip chip; | |
| 102 | void __iomem *reg_base; | |
| 103 | int irq; | |
| 104 | raw_spinlock_t lock; | |
| 105 | struct device *dev; | |
| 106 | struct tng_gpio_context *ctx; | |
| 107 | struct tng_wake_regs wake_regs; | |
| 108 | struct tng_gpio_pin_info pin_info; | |
| 109 | struct tng_gpio_info info; | |
| 110 | }; | |
| 111 | ||
| 112 | int devm_tng_gpio_probe(struct device *dev, struct tng_gpio *gpio); | |
| 113 | ||
| 114 | int tng_gpio_suspend(struct device *dev); | |
| 115 | int tng_gpio_resume(struct device *dev); | |
| 116 | ||
| 117 | #endif /* _GPIO_TANGIER_H_ */ |