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![Andy Shevchenko](/assets/img/avatar_default.png)
We have a temporary variable to keep pointer to struct device. Utilise it inside the ->probe() implementation. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
144 lines
3.6 KiB
C
144 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Intel Merrifield SoC GPIO driver
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*
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* Copyright (c) 2016, 2023 Intel Corporation.
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* Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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*/
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#include <linux/acpi.h>
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#include <linux/bitops.h>
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#include <linux/device.h>
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#include <linux/err.h>
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#include <linux/io.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/types.h>
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#include "gpio-tangier.h"
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/* Intel Merrifield has 192 GPIO pins */
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#define MRFLD_NGPIO 192
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static const struct tng_gpio_pinrange mrfld_gpio_ranges[] = {
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GPIO_PINRANGE(0, 11, 146),
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GPIO_PINRANGE(12, 13, 144),
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GPIO_PINRANGE(14, 15, 35),
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GPIO_PINRANGE(16, 16, 164),
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GPIO_PINRANGE(17, 18, 105),
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GPIO_PINRANGE(19, 22, 101),
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GPIO_PINRANGE(23, 30, 107),
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GPIO_PINRANGE(32, 43, 67),
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GPIO_PINRANGE(44, 63, 195),
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GPIO_PINRANGE(64, 67, 140),
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GPIO_PINRANGE(68, 69, 165),
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GPIO_PINRANGE(70, 71, 65),
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GPIO_PINRANGE(72, 76, 228),
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GPIO_PINRANGE(77, 86, 37),
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GPIO_PINRANGE(87, 87, 48),
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GPIO_PINRANGE(88, 88, 47),
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GPIO_PINRANGE(89, 96, 49),
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GPIO_PINRANGE(97, 97, 34),
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GPIO_PINRANGE(102, 119, 83),
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GPIO_PINRANGE(120, 123, 79),
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GPIO_PINRANGE(124, 135, 115),
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GPIO_PINRANGE(137, 142, 158),
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GPIO_PINRANGE(154, 163, 24),
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GPIO_PINRANGE(164, 176, 215),
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GPIO_PINRANGE(177, 189, 127),
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GPIO_PINRANGE(190, 191, 178),
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};
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static const char *mrfld_gpio_get_pinctrl_dev_name(struct tng_gpio *priv)
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{
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struct device *dev = priv->dev;
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struct acpi_device *adev;
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const char *name;
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adev = acpi_dev_get_first_match_dev("INTC1002", NULL, -1);
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if (adev) {
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name = devm_kstrdup(dev, acpi_dev_name(adev), GFP_KERNEL);
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acpi_dev_put(adev);
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} else {
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name = "pinctrl-merrifield";
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}
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return name;
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}
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static int mrfld_gpio_probe(struct pci_dev *pdev, const struct pci_device_id *id)
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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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u32 gpio_base, irq_base;
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void __iomem *base;
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int retval;
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retval = pcim_enable_device(pdev);
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if (retval)
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return retval;
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retval = pcim_iomap_regions(pdev, BIT(1) | BIT(0), pci_name(pdev));
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if (retval)
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return dev_err_probe(dev, retval, "I/O memory mapping error\n");
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base = pcim_iomap_table(pdev)[1];
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irq_base = readl(base + 0 * sizeof(u32));
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gpio_base = readl(base + 1 * sizeof(u32));
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/* Release the IO mapping, since we already get the info from BAR1 */
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pcim_iounmap_regions(pdev, BIT(1));
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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->dev = dev;
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priv->reg_base = pcim_iomap_table(pdev)[0];
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priv->pin_info.pin_ranges = mrfld_gpio_ranges;
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priv->pin_info.nranges = ARRAY_SIZE(mrfld_gpio_ranges);
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priv->pin_info.name = mrfld_gpio_get_pinctrl_dev_name(priv);
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if (!priv->pin_info.name)
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return -ENOMEM;
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priv->info.base = gpio_base;
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priv->info.ngpio = MRFLD_NGPIO;
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priv->info.first = irq_base;
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retval = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
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if (retval < 0)
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return retval;
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priv->irq = pci_irq_vector(pdev, 0);
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priv->wake_regs.gwmr = GWMR_MRFLD;
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priv->wake_regs.gwsr = GWSR_MRFLD;
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priv->wake_regs.gsir = GSIR_MRFLD;
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retval = devm_tng_gpio_probe(dev, priv);
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if (retval)
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return dev_err_probe(dev, retval, "tng_gpio_probe error\n");
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pci_set_drvdata(pdev, priv);
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return 0;
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}
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static const struct pci_device_id mrfld_gpio_ids[] = {
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{ PCI_VDEVICE(INTEL, 0x1199) },
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{ }
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};
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MODULE_DEVICE_TABLE(pci, mrfld_gpio_ids);
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static struct pci_driver mrfld_gpio_driver = {
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.name = "gpio-merrifield",
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.id_table = mrfld_gpio_ids,
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.probe = mrfld_gpio_probe,
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};
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module_pci_driver(mrfld_gpio_driver);
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MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
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MODULE_DESCRIPTION("Intel Merrifield SoC GPIO driver");
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MODULE_LICENSE("GPL v2");
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MODULE_IMPORT_NS(GPIO_TANGIER);
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