diff options
Diffstat (limited to 'drivers/gpio/gpio-lp87565.c')
| -rw-r--r-- | drivers/gpio/gpio-lp87565.c | 34 |
1 files changed, 16 insertions, 18 deletions
diff --git a/drivers/gpio/gpio-lp87565.c b/drivers/gpio/gpio-lp87565.c index a121c8f10610..0f337c1283b2 100644 --- a/drivers/gpio/gpio-lp87565.c +++ b/drivers/gpio/gpio-lp87565.c @@ -1,16 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/ * Keerthy <j-keerthy@ti.com> * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed "as is" WITHOUT ANY WARRANTY of any - * kind, whether expressed or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License version 2 for more details. - * * Based on the LP873X driver */ @@ -38,13 +30,13 @@ static int lp87565_gpio_get(struct gpio_chip *chip, unsigned int offset) return !!(val & BIT(offset)); } -static void lp87565_gpio_set(struct gpio_chip *chip, unsigned int offset, - int value) +static int lp87565_gpio_set(struct gpio_chip *chip, unsigned int offset, + int value) { struct lp87565_gpio *gpio = gpiochip_get_data(chip); - regmap_update_bits(gpio->map, LP87565_REG_GPIO_OUT, - BIT(offset), value ? BIT(offset) : 0); + return regmap_update_bits(gpio->map, LP87565_REG_GPIO_OUT, + BIT(offset), value ? BIT(offset) : 0); } static int lp87565_gpio_get_direction(struct gpio_chip *chip, @@ -57,7 +49,10 @@ static int lp87565_gpio_get_direction(struct gpio_chip *chip, if (ret < 0) return ret; - return !(val & BIT(offset)); + if (val & BIT(offset)) + return GPIO_LINE_DIRECTION_OUT; + + return GPIO_LINE_DIRECTION_IN; } static int lp87565_gpio_direction_input(struct gpio_chip *chip, @@ -74,8 +69,11 @@ static int lp87565_gpio_direction_output(struct gpio_chip *chip, unsigned int offset, int value) { struct lp87565_gpio *gpio = gpiochip_get_data(chip); + int ret; - lp87565_gpio_set(chip, offset, value); + ret = lp87565_gpio_set(chip, offset, value); + if (ret) + return ret; return regmap_update_bits(gpio->map, LP87565_REG_GPIO_CONFIG, @@ -120,14 +118,14 @@ static int lp87565_gpio_set_config(struct gpio_chip *gc, unsigned int offset, return regmap_update_bits(gpio->map, LP87565_REG_GPIO_CONFIG, BIT(offset + - __ffs(LP87565_GOIO1_OD)), + __ffs(LP87565_GPIO1_OD)), BIT(offset + - __ffs(LP87565_GOIO1_OD))); + __ffs(LP87565_GPIO1_OD))); case PIN_CONFIG_DRIVE_PUSH_PULL: return regmap_update_bits(gpio->map, LP87565_REG_GPIO_CONFIG, BIT(offset + - __ffs(LP87565_GOIO1_OD)), 0); + __ffs(LP87565_GPIO1_OD)), 0); default: return -ENOTSUPP; } |