diff options
Diffstat (limited to 'drivers/pinctrl/nomadik/pinctrl-abx500.c')
| -rw-r--r-- | drivers/pinctrl/nomadik/pinctrl-abx500.c | 88 |
1 files changed, 40 insertions, 48 deletions
diff --git a/drivers/pinctrl/nomadik/pinctrl-abx500.c b/drivers/pinctrl/nomadik/pinctrl-abx500.c index 3d630a0544e1..fc7ebeda8440 100644 --- a/drivers/pinctrl/nomadik/pinctrl-abx500.c +++ b/drivers/pinctrl/nomadik/pinctrl-abx500.c @@ -1,42 +1,46 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) ST-Ericsson SA 2013 * * Author: Patrice Chotard <patrice.chotard@st.com> - * License terms: GNU General Public License (GPL) version 2 * * Driver allows to use AxB5xx unused pins to be used as GPIO - * - * 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. */ -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/slab.h> -#include <linux/init.h> + +#include <linux/bitops.h> +#include <linux/cleanup.h> #include <linux/err.h> -#include <linux/of.h> -#include <linux/of_device.h> -#include <linux/platform_device.h> #include <linux/gpio/driver.h> +#include <linux/init.h> +#include <linux/interrupt.h> #include <linux/irq.h> #include <linux/irqdomain.h> -#include <linux/interrupt.h> -#include <linux/bitops.h> +#include <linux/kernel.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> +#include <linux/property.h> +#include <linux/seq_file.h> +#include <linux/slab.h> +#include <linux/string_choices.h> +#include <linux/types.h> + #include <linux/mfd/abx500.h> #include <linux/mfd/abx500/ab8500.h> -#include <linux/pinctrl/pinctrl.h> + #include <linux/pinctrl/consumer.h> -#include <linux/pinctrl/pinmux.h> -#include <linux/pinctrl/pinconf.h> -#include <linux/pinctrl/pinconf-generic.h> #include <linux/pinctrl/machine.h> +#include <linux/pinctrl/pinconf-generic.h> +#include <linux/pinctrl/pinconf.h> +#include <linux/pinctrl/pinctrl.h> +#include <linux/pinctrl/pinmux.h> -#include "pinctrl-abx500.h" #include "../core.h" #include "../pinconf.h" #include "../pinctrl-utils.h" +#include "pinctrl-abx500.h" + /* * GPIO registers offset * Bank: 0x10 @@ -163,14 +167,10 @@ out: return bit; } -static void abx500_gpio_set(struct gpio_chip *chip, unsigned offset, int val) +static int abx500_gpio_set(struct gpio_chip *chip, unsigned int offset, + int val) { - struct abx500_pinctrl *pct = gpiochip_get_data(chip); - int ret; - - ret = abx500_gpio_set_bits(chip, AB8500_GPIO_OUT1_REG, offset, val); - if (ret < 0) - dev_err(pct->dev, "%s write failed (%d)\n", __func__, ret); + return abx500_gpio_set_bits(chip, AB8500_GPIO_OUT1_REG, offset, val); } static int abx500_gpio_direction_output(struct gpio_chip *chip, @@ -446,20 +446,17 @@ out: return ret; } -#include <linux/seq_file.h> - static void abx500_gpio_dbg_show_one(struct seq_file *s, struct pinctrl_dev *pctldev, struct gpio_chip *chip, unsigned offset, unsigned gpio) { struct abx500_pinctrl *pct = pinctrl_dev_get_drvdata(pctldev); - const char *label = gpiochip_is_requested(chip, offset - 1); u8 gpio_offset = offset - 1; int mode = -1; bool is_out; bool pd; - int ret; + int ret = -ENOMEM; const char *modes[] = { [ABX500_DEFAULT] = "default", @@ -475,6 +472,10 @@ static void abx500_gpio_dbg_show_one(struct seq_file *s, [ABX500_GPIO_PULL_UP] = "pull up", }; + char *label __free(kfree) = gpiochip_dup_line_label(chip, offset - 1); + if (IS_ERR(label)) + goto out; + ret = abx500_gpio_get_bit(chip, AB8500_GPIO_DIR1_REG, gpio_offset, &is_out); if (ret < 0) @@ -492,7 +493,7 @@ static void abx500_gpio_dbg_show_one(struct seq_file *s, seq_printf(s, " %-9s", pull_up_down[pd]); } else - seq_printf(s, " %-9s", chip->get(chip, offset) ? "hi" : "lo"); + seq_printf(s, " %-9s", str_hi_lo(chip->get(chip, offset))); mode = abx500_get_mode(pctldev, chip, offset); @@ -712,8 +713,7 @@ static int abx500_dt_add_map_configs(struct pinctrl_map **map, if (*num_maps == *reserved_maps) return -ENOSPC; - dup_configs = kmemdup(configs, num_configs * sizeof(*dup_configs), - GFP_KERNEL); + dup_configs = kmemdup_array(configs, num_configs, sizeof(*dup_configs), GFP_KERNEL); if (!dup_configs) return -ENOMEM; @@ -807,14 +807,13 @@ static int abx500_dt_node_to_map(struct pinctrl_dev *pctldev, struct pinctrl_map **map, unsigned *num_maps) { unsigned reserved_maps; - struct device_node *np; int ret; reserved_maps = 0; *map = NULL; *num_maps = 0; - for_each_child_of_node(np_config, np) { + for_each_child_of_node_scoped(np_config, np) { ret = abx500_dt_subnode_to_map(pctldev, np, map, &reserved_maps, num_maps); if (ret < 0) { @@ -861,9 +860,9 @@ static int abx500_pin_config_set(struct pinctrl_dev *pctldev, dev_dbg(chip->parent, "pin %d [%#lx]: %s %s\n", pin, configs[i], - (param == PIN_CONFIG_OUTPUT) ? "output " : "input", - (param == PIN_CONFIG_OUTPUT) ? - (argument ? "high" : "low") : + (param == PIN_CONFIG_LEVEL) ? "output " : "input", + (param == PIN_CONFIG_LEVEL) ? + str_high_low(argument) : (argument ? "pull up" : "pull down")); /* on ABx500, there is no GPIO0, so adjust the offset */ @@ -908,7 +907,7 @@ static int abx500_pin_config_set(struct pinctrl_dev *pctldev, ret = abx500_gpio_direction_input(chip, offset); break; - case PIN_CONFIG_OUTPUT: + case PIN_CONFIG_LEVEL: ret = abx500_gpio_direction_output(chip, offset, argument); break; @@ -986,7 +985,6 @@ static const struct of_device_id abx500_gpio_match[] = { static int abx500_gpio_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; - const struct of_device_id *match; struct abx500_pinctrl *pct; unsigned int id = -1; int ret; @@ -1007,12 +1005,7 @@ static int abx500_gpio_probe(struct platform_device *pdev) pct->chip.parent = &pdev->dev; pct->chip.base = -1; /* Dynamic allocation */ - match = of_match_device(abx500_gpio_match, &pdev->dev); - if (!match) { - dev_err(&pdev->dev, "gpio dt not matching\n"); - return -ENODEV; - } - id = (unsigned long)match->data; + id = (unsigned long)device_get_match_data(&pdev->dev); /* Poke in other ASIC variants here */ switch (id) { @@ -1080,12 +1073,11 @@ out_rem_chip: * abx500_gpio_remove() - remove Ab8500-gpio driver * @pdev: Platform device registered */ -static int abx500_gpio_remove(struct platform_device *pdev) +static void abx500_gpio_remove(struct platform_device *pdev) { struct abx500_pinctrl *pct = platform_get_drvdata(pdev); gpiochip_remove(&pct->chip); - return 0; } static struct platform_driver abx500_gpio_driver = { |