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1// SPDX-License-Identifier: GPL-2.02/*3 * Intel Merrifield SoC GPIO driver4 *5 * Copyright (c) 2016, 2023 Intel Corporation.6 * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>7 */8 9#include <linux/acpi.h>10#include <linux/bitops.h>11#include <linux/device.h>12#include <linux/err.h>13#include <linux/io.h>14#include <linux/module.h>15#include <linux/pci.h>16#include <linux/types.h>17 18#include "gpio-tangier.h"19 20/* Intel Merrifield has 192 GPIO pins */21#define MRFLD_NGPIO 19222 23static const struct tng_gpio_pinrange mrfld_gpio_ranges[] = {24 GPIO_PINRANGE(0, 11, 146),25 GPIO_PINRANGE(12, 13, 144),26 GPIO_PINRANGE(14, 15, 35),27 GPIO_PINRANGE(16, 16, 164),28 GPIO_PINRANGE(17, 18, 105),29 GPIO_PINRANGE(19, 22, 101),30 GPIO_PINRANGE(23, 30, 107),31 GPIO_PINRANGE(32, 43, 67),32 GPIO_PINRANGE(44, 63, 195),33 GPIO_PINRANGE(64, 67, 140),34 GPIO_PINRANGE(68, 69, 165),35 GPIO_PINRANGE(70, 71, 65),36 GPIO_PINRANGE(72, 76, 228),37 GPIO_PINRANGE(77, 86, 37),38 GPIO_PINRANGE(87, 87, 48),39 GPIO_PINRANGE(88, 88, 47),40 GPIO_PINRANGE(89, 96, 49),41 GPIO_PINRANGE(97, 97, 34),42 GPIO_PINRANGE(102, 119, 83),43 GPIO_PINRANGE(120, 123, 79),44 GPIO_PINRANGE(124, 135, 115),45 GPIO_PINRANGE(137, 142, 158),46 GPIO_PINRANGE(154, 163, 24),47 GPIO_PINRANGE(164, 176, 215),48 GPIO_PINRANGE(177, 189, 127),49 GPIO_PINRANGE(190, 191, 178),50};51 52static const char *mrfld_gpio_get_pinctrl_dev_name(struct tng_gpio *priv)53{54 struct device *dev = priv->dev;55 struct acpi_device *adev;56 const char *name;57 58 adev = acpi_dev_get_first_match_dev("INTC1002", NULL, -1);59 if (adev) {60 name = devm_kstrdup(dev, acpi_dev_name(adev), GFP_KERNEL);61 acpi_dev_put(adev);62 } else {63 name = "pinctrl-merrifield";64 }65 66 return name;67}68 69static int mrfld_gpio_probe(struct pci_dev *pdev, const struct pci_device_id *id)70{71 struct device *dev = &pdev->dev;72 struct tng_gpio *priv;73 u32 gpio_base, irq_base;74 void __iomem *base;75 int retval;76 77 retval = pcim_enable_device(pdev);78 if (retval)79 return retval;80 81 retval = pcim_iomap_regions(pdev, BIT(1) | BIT(0), pci_name(pdev));82 if (retval)83 return dev_err_probe(dev, retval, "I/O memory mapping error\n");84 85 base = pcim_iomap_table(pdev)[1];86 87 irq_base = readl(base + 0 * sizeof(u32));88 gpio_base = readl(base + 1 * sizeof(u32));89 90 /* Release the IO mapping, since we already get the info from BAR1 */91 pcim_iounmap_regions(pdev, BIT(1));92 93 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);94 if (!priv)95 return -ENOMEM;96 97 priv->dev = dev;98 priv->reg_base = pcim_iomap_table(pdev)[0];99 100 priv->pin_info.pin_ranges = mrfld_gpio_ranges;101 priv->pin_info.nranges = ARRAY_SIZE(mrfld_gpio_ranges);102 priv->pin_info.name = mrfld_gpio_get_pinctrl_dev_name(priv);103 if (!priv->pin_info.name)104 return -ENOMEM;105 106 priv->info.base = gpio_base;107 priv->info.ngpio = MRFLD_NGPIO;108 priv->info.first = irq_base;109 110 retval = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);111 if (retval < 0)112 return retval;113 114 priv->irq = pci_irq_vector(pdev, 0);115 116 priv->wake_regs.gwmr = GWMR_MRFLD;117 priv->wake_regs.gwsr = GWSR_MRFLD;118 priv->wake_regs.gsir = GSIR_MRFLD;119 120 retval = devm_tng_gpio_probe(dev, priv);121 if (retval)122 return dev_err_probe(dev, retval, "tng_gpio_probe error\n");123 124 pci_set_drvdata(pdev, priv);125 return 0;126}127 128static const struct pci_device_id mrfld_gpio_ids[] = {129 { PCI_VDEVICE(INTEL, 0x1199) },130 { }131};132MODULE_DEVICE_TABLE(pci, mrfld_gpio_ids);133 134static struct pci_driver mrfld_gpio_driver = {135 .name = "gpio-merrifield",136 .id_table = mrfld_gpio_ids,137 .probe = mrfld_gpio_probe,138};139module_pci_driver(mrfld_gpio_driver);140 141MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");142MODULE_DESCRIPTION("Intel Merrifield SoC GPIO driver");143MODULE_LICENSE("GPL v2");144MODULE_IMPORT_NS(GPIO_TANGIER);145