mirror of
https://github.com/smaeul/u-boot.git
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03de305ec4
As part of bringing the master branch back in to next, we need to allow for all of these changes to exist here. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
128 lines
2.6 KiB
C
128 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c), Vaisala Oyj
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*/
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#include <asm/gpio.h>
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#include <dm.h>
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#include <dm/devres.h>
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#include <errno.h>
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#include <reboot-mode/reboot-mode-gpio.h>
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#include <reboot-mode/reboot-mode.h>
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DECLARE_GLOBAL_DATA_PTR;
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static int reboot_mode_get(struct udevice *dev, u32 *buf)
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{
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int ret;
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struct reboot_mode_gpio_platdata *plat_data;
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if (!buf)
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return -EINVAL;
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plat_data = dev_get_plat(dev);
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if (!plat_data)
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return -EINVAL;
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ret = dm_gpio_get_values_as_int(plat_data->gpio_desc,
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plat_data->gpio_count);
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if (ret < 0)
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return ret;
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*buf = ret;
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return 0;
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}
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static int reboot_mode_probe(struct udevice *dev)
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{
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struct reboot_mode_gpio_platdata *plat_data;
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plat_data = dev_get_plat(dev);
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if (!plat_data)
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return -EINVAL;
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int ret;
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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ret = gpio_get_list_count(dev, "gpios");
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if (ret < 0)
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return ret;
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plat_data->gpio_count = ret;
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#endif
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if (plat_data->gpio_count <= 0)
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return -EINVAL;
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plat_data->gpio_desc = devm_kcalloc(dev, plat_data->gpio_count,
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sizeof(struct gpio_desc), 0);
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if (!plat_data->gpio_desc)
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return -ENOMEM;
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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ret = gpio_request_list_by_name(dev, "gpios", plat_data->gpio_desc,
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plat_data->gpio_count, GPIOD_IS_IN);
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if (ret < 0)
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return ret;
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#else
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for (int i = 0; i < plat_data->gpio_count; i++) {
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struct reboot_mode_gpio_config *gpio =
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plat_data->gpios_config + i;
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struct gpio_desc *desc = plat_data->gpio_desc + i;
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ret = uclass_get_device_by_seq(UCLASS_GPIO,
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gpio->gpio_dev_offset,
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&desc->dev);
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if (ret < 0)
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return ret;
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desc->flags = gpio->flags;
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desc->offset = gpio->gpio_offset;
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ret = dm_gpio_request(desc, "");
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if (ret < 0)
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return ret;
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ret = dm_gpio_set_dir(desc);
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if (ret < 0)
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return ret;
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}
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#endif
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return 0;
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}
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static int reboot_mode_remove(struct udevice *dev)
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{
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struct reboot_mode_gpio_platdata *plat_data;
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plat_data = dev_get_plat(dev);
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if (!plat_data)
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return -EINVAL;
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return gpio_free_list(dev, plat_data->gpio_desc, plat_data->gpio_count);
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}
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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static const struct udevice_id reboot_mode_ids[] = {
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{ .compatible = "reboot-mode-gpio", 0 },
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{ }
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};
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#endif
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static const struct reboot_mode_ops reboot_mode_gpio_ops = {
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.get = reboot_mode_get,
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};
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U_BOOT_DRIVER(reboot_mode_gpio) = {
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.name = "reboot-mode-gpio",
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.id = UCLASS_REBOOT_MODE,
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.probe = reboot_mode_probe,
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.remove = reboot_mode_remove,
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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.of_match = reboot_mode_ids,
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#endif
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.plat_auto = sizeof(struct reboot_mode_gpio_platdata),
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.ops = &reboot_mode_gpio_ops,
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};
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