mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-01 16:14:13 +08:00
9409d8cf78
This driver adds support for Intel Elkhart Lake PSE GPIO controller, using Intel Tangier as a library driver. Signed-off-by: Pandith N <pandith.n@intel.com> Co-developed-by: Raag Jadav <raag.jadav@intel.com> Signed-off-by: Raag Jadav <raag.jadav@intel.com> Co-developed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
91 lines
2.0 KiB
C
91 lines
2.0 KiB
C
// 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);
|