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