projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| dae5f0af | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 122c94de AC |
2 | #include <linux/gpio/consumer.h> |
| 3 | #include <linux/gpio/driver.h> | |
| 4 | ||
| 5 | #include <linux/gpio.h> | |
| 6 | ||
| 7 | #include "gpiolib.h" | |
| 8 | ||
| f4028860 BG |
9 | /* |
| 10 | * **DEPRECATED** This function is deprecated and must not be used in new code. | |
| 11 | */ | |
| 122c94de AC |
12 | void gpio_free(unsigned gpio) |
| 13 | { | |
| 14 | gpiod_free(gpio_to_desc(gpio)); | |
| 15 | } | |
| 16 | EXPORT_SYMBOL_GPL(gpio_free); | |
| 17 | ||
| 18 | /** | |
| 19 | * gpio_request_one - request a single GPIO with initial configuration | |
| 20 | * @gpio: the GPIO number | |
| 21 | * @flags: GPIO configuration as specified by GPIOF_* | |
| 22 | * @label: a literal description string of this GPIO | |
| f4028860 BG |
23 | * |
| 24 | * **DEPRECATED** This function is deprecated and must not be used in new code. | |
| 122c94de AC |
25 | */ |
| 26 | int gpio_request_one(unsigned gpio, unsigned long flags, const char *label) | |
| 27 | { | |
| 28 | struct gpio_desc *desc; | |
| 29 | int err; | |
| 30 | ||
| 0e9a5edf | 31 | /* Compatibility: assume unavailable "valid" GPIOs will appear later */ |
| 8a7a6103 AS |
32 | desc = gpio_to_desc(gpio); |
| 33 | if (!desc) | |
| 0e9a5edf AC |
34 | return -EPROBE_DEFER; |
| 35 | ||
| 85b03b30 JH |
36 | err = gpiod_request(desc, label); |
| 37 | if (err) | |
| 38 | return err; | |
| 39 | ||
| 2be00173 GR |
40 | if (flags & GPIOF_ACTIVE_LOW) |
| 41 | set_bit(FLAG_ACTIVE_LOW, &desc->flags); | |
| 42 | ||
| 122c94de AC |
43 | if (flags & GPIOF_DIR_IN) |
| 44 | err = gpiod_direction_input(desc); | |
| 45 | else | |
| 46 | err = gpiod_direction_output_raw(desc, | |
| 47 | (flags & GPIOF_INIT_HIGH) ? 1 : 0); | |
| 48 | ||
| 49 | if (err) | |
| 50 | goto free_gpio; | |
| 51 | ||
| 122c94de AC |
52 | return 0; |
| 53 | ||
| 54 | free_gpio: | |
| 55 | gpiod_free(desc); | |
| 56 | return err; | |
| 57 | } | |
| 58 | EXPORT_SYMBOL_GPL(gpio_request_one); | |
| 59 | ||
| f4028860 BG |
60 | /* |
| 61 | * **DEPRECATED** This function is deprecated and must not be used in new code. | |
| 62 | */ | |
| 122c94de AC |
63 | int gpio_request(unsigned gpio, const char *label) |
| 64 | { | |
| 8a7a6103 | 65 | struct gpio_desc *desc; |
| 0e9a5edf AC |
66 | |
| 67 | /* Compatibility: assume unavailable "valid" GPIOs will appear later */ | |
| 8a7a6103 AS |
68 | desc = gpio_to_desc(gpio); |
| 69 | if (!desc) | |
| 0e9a5edf AC |
70 | return -EPROBE_DEFER; |
| 71 | ||
| 72 | return gpiod_request(desc, label); | |
| 122c94de AC |
73 | } |
| 74 | EXPORT_SYMBOL_GPL(gpio_request); |