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// SPDX-License-Identifier: GPL-2.0-only
/*
* Intel Elkhart Lake PSE GPIO driver
*
* Copyright (c) 2023 Intel Corporation.
*
* Authors: Pandith N <pandith.n@intel.com>
* Raag Jadav <raag.jadav@intel.com>
*/
#include <linux/device.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include "gpio-tangier.h"
/* Each Intel EHL PSE GPIO Controller has 30 GPIO pins */
#define EHL_PSE_NGPIO 30
static int ehl_gpio_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct tng_gpio *priv;
int irq, ret;
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->reg_base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(priv->reg_base))
return PTR_ERR(priv->reg_base);
priv->dev = dev;
priv->irq = irq;
priv->info.base = -1;
priv->info.ngpio = EHL_PSE_NGPIO;
priv->wake_regs.gwmr = GWMR_EHL;
priv->wake_regs.gwsr = GWSR_EHL;
priv->wake_regs.gsir = GSIR_EHL;
ret = devm_tng_gpio_probe(dev, priv);
if (ret)
return dev_err_probe(dev, ret, "tng_gpio_probe error\n");
platform_set_drvdata(pdev, priv);
return 0;
}
static int ehl_gpio_suspend(struct device *dev)
{
return tng_gpio_suspend(dev);
}
static int ehl_gpio_resume(struct device *dev)
{
return tng_gpio_resume(dev);
}
static DEFINE_SIMPLE_DEV_PM_OPS(ehl_gpio_pm_ops, ehl_gpio_suspend, ehl_gpio_resume);
static const struct platform_device_id ehl_gpio_ids[] = {
{ "gpio-elkhartlake" },
{ }
};
MODULE_DEVICE_TABLE(platform, ehl_gpio_ids);
static struct platform_driver ehl_gpio_driver = {
.driver = {
.name = "gpio-elkhartlake",
.pm = pm_sleep_ptr(&ehl_gpio_pm_ops),
},
.probe = ehl_gpio_probe,
.id_table = ehl_gpio_ids,
};
module_platform_driver(ehl_gpio_driver);
MODULE_AUTHOR("Pandith N <pandith.n@intel.com>");
MODULE_AUTHOR("Raag Jadav <raag.jadav@intel.com>");
MODULE_DESCRIPTION("Intel Elkhart Lake PSE GPIO driver");
MODULE_LICENSE("GPL");
MODULE_IMPORT_NS(GPIO_TANGIER);
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