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10c1529690
Since PCI device should not be abusing platform device, MFD parent to platform child path is no longer being pursued for this driver. Convert it to auxiliary driver, which will be used by EHL PSE auxiliary device. Signed-off-by: Raag Jadav <raag.jadav@intel.com> Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20251112034040.457801-3-raag.jadav@intel.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
81 lines
1.9 KiB
C
81 lines
1.9 KiB
C
// 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, 2025 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/auxiliary_bus.h>
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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/pm.h>
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#include <linux/ehl_pse_io_aux.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 auxiliary_device *adev, const struct auxiliary_device_id *id)
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{
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struct device *dev = &adev->dev;
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struct ehl_pse_io_data *data;
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struct tng_gpio *priv;
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int ret;
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data = dev_get_platdata(dev);
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if (!data)
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return -ENODATA;
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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_ioremap_resource(dev, &data->mem);
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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 = data->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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auxiliary_set_drvdata(adev, priv);
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return 0;
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}
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static const struct auxiliary_device_id ehl_gpio_ids[] = {
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{ EHL_PSE_IO_NAME "." EHL_PSE_GPIO_NAME },
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{ }
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};
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MODULE_DEVICE_TABLE(auxiliary, ehl_gpio_ids);
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static struct auxiliary_driver ehl_gpio_driver = {
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.driver = {
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.pm = pm_sleep_ptr(&tng_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_auxiliary_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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