193374b76SAndy Shevchenko // SPDX-License-Identifier: GPL-2.0
2ccf6fd6dSAndy Shevchenko /*
3ccf6fd6dSAndy Shevchenko * Intel Merrifield SoC GPIO driver
4ccf6fd6dSAndy Shevchenko *
534840be5SPandith N * Copyright (c) 2016, 2023 Intel Corporation.
6ccf6fd6dSAndy Shevchenko * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
7ccf6fd6dSAndy Shevchenko */
8ccf6fd6dSAndy Shevchenko
9dd1dbf94SAndy Shevchenko #include <linux/acpi.h>
10ccf6fd6dSAndy Shevchenko #include <linux/bitops.h>
1134840be5SPandith N #include <linux/device.h>
1234840be5SPandith N #include <linux/err.h>
13ccf6fd6dSAndy Shevchenko #include <linux/io.h>
14ccf6fd6dSAndy Shevchenko #include <linux/module.h>
15ccf6fd6dSAndy Shevchenko #include <linux/pci.h>
1634840be5SPandith N #include <linux/types.h>
17ccf6fd6dSAndy Shevchenko
1834840be5SPandith N #include "gpio-tangier.h"
19ccf6fd6dSAndy Shevchenko
20ccf6fd6dSAndy Shevchenko /* Intel Merrifield has 192 GPIO pins */
21ccf6fd6dSAndy Shevchenko #define MRFLD_NGPIO 192
22ccf6fd6dSAndy Shevchenko
2334840be5SPandith N static const struct tng_gpio_pinrange mrfld_gpio_ranges[] = {
24ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(0, 11, 146),
25ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(12, 13, 144),
26ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(14, 15, 35),
27ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(16, 16, 164),
28ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(17, 18, 105),
29ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(19, 22, 101),
30ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(23, 30, 107),
31ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(32, 43, 67),
32ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(44, 63, 195),
33ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(64, 67, 140),
34ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(68, 69, 165),
35ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(70, 71, 65),
36ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(72, 76, 228),
37ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(77, 86, 37),
38ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(87, 87, 48),
39ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(88, 88, 47),
40ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(89, 96, 49),
41ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(97, 97, 34),
42ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(102, 119, 83),
43ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(120, 123, 79),
44ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(124, 135, 115),
45ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(137, 142, 158),
46ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(154, 163, 24),
47ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(164, 176, 215),
48ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(177, 189, 127),
49ccf6fd6dSAndy Shevchenko GPIO_PINRANGE(190, 191, 178),
50ccf6fd6dSAndy Shevchenko };
51ccf6fd6dSAndy Shevchenko
mrfld_gpio_get_pinctrl_dev_name(struct tng_gpio * priv)5234840be5SPandith N static const char *mrfld_gpio_get_pinctrl_dev_name(struct tng_gpio *priv)
53dd1dbf94SAndy Shevchenko {
54*dc537030SAndy Shevchenko struct device *dev = priv->dev;
55d00d2109SAndy Shevchenko struct acpi_device *adev;
56d00d2109SAndy Shevchenko const char *name;
57d00d2109SAndy Shevchenko
58d00d2109SAndy Shevchenko adev = acpi_dev_get_first_match_dev("INTC1002", NULL, -1);
59d00d2109SAndy Shevchenko if (adev) {
60*dc537030SAndy Shevchenko name = devm_kstrdup(dev, acpi_dev_name(adev), GFP_KERNEL);
61fe066621SYueHaibing acpi_dev_put(adev);
62d00d2109SAndy Shevchenko } else {
63d00d2109SAndy Shevchenko name = "pinctrl-merrifield";
64d00d2109SAndy Shevchenko }
65d00d2109SAndy Shevchenko
66d00d2109SAndy Shevchenko return name;
67dd1dbf94SAndy Shevchenko }
68dd1dbf94SAndy Shevchenko
mrfld_gpio_probe(struct pci_dev * pdev,const struct pci_device_id * id)69cd242b33SAndy Shevchenko static int mrfld_gpio_probe(struct pci_dev *pdev, const struct pci_device_id *id)
70cd242b33SAndy Shevchenko {
7134840be5SPandith N struct device *dev = &pdev->dev;
7234840be5SPandith N struct tng_gpio *priv;
73ccf6fd6dSAndy Shevchenko u32 gpio_base, irq_base;
74ccf6fd6dSAndy Shevchenko void __iomem *base;
75ccf6fd6dSAndy Shevchenko int retval;
76ccf6fd6dSAndy Shevchenko
77ccf6fd6dSAndy Shevchenko retval = pcim_enable_device(pdev);
78ccf6fd6dSAndy Shevchenko if (retval)
79ccf6fd6dSAndy Shevchenko return retval;
80ccf6fd6dSAndy Shevchenko
81ccf6fd6dSAndy Shevchenko retval = pcim_iomap_regions(pdev, BIT(1) | BIT(0), pci_name(pdev));
82dd0ccef2SAndy Shevchenko if (retval)
83dd0ccef2SAndy Shevchenko return dev_err_probe(dev, retval, "I/O memory mapping error\n");
84ccf6fd6dSAndy Shevchenko
85ccf6fd6dSAndy Shevchenko base = pcim_iomap_table(pdev)[1];
86ccf6fd6dSAndy Shevchenko
877e73aa90SAndy Shevchenko irq_base = readl(base + 0 * sizeof(u32));
887e73aa90SAndy Shevchenko gpio_base = readl(base + 1 * sizeof(u32));
89ccf6fd6dSAndy Shevchenko
90ccf6fd6dSAndy Shevchenko /* Release the IO mapping, since we already get the info from BAR1 */
91ccf6fd6dSAndy Shevchenko pcim_iounmap_regions(pdev, BIT(1));
92ccf6fd6dSAndy Shevchenko
93*dc537030SAndy Shevchenko priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
944b7edaefSMarkus Elfring if (!priv)
95ccf6fd6dSAndy Shevchenko return -ENOMEM;
96ccf6fd6dSAndy Shevchenko
97*dc537030SAndy Shevchenko priv->dev = dev;
98ccf6fd6dSAndy Shevchenko priv->reg_base = pcim_iomap_table(pdev)[0];
99ccf6fd6dSAndy Shevchenko
10034840be5SPandith N priv->pin_info.pin_ranges = mrfld_gpio_ranges;
10134840be5SPandith N priv->pin_info.nranges = ARRAY_SIZE(mrfld_gpio_ranges);
10234840be5SPandith N priv->pin_info.name = mrfld_gpio_get_pinctrl_dev_name(priv);
10334840be5SPandith N if (!priv->pin_info.name)
10434840be5SPandith N return -ENOMEM;
105ccf6fd6dSAndy Shevchenko
10634840be5SPandith N priv->info.base = gpio_base;
10734840be5SPandith N priv->info.ngpio = MRFLD_NGPIO;
10834840be5SPandith N priv->info.first = irq_base;
109ccf6fd6dSAndy Shevchenko
1106b1c7837SAndy Shevchenko retval = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
1116b1c7837SAndy Shevchenko if (retval < 0)
1126b1c7837SAndy Shevchenko return retval;
1136b1c7837SAndy Shevchenko
11434840be5SPandith N priv->irq = pci_irq_vector(pdev, 0);
1154a5e0f9eSAndy Shevchenko
11634840be5SPandith N priv->wake_regs.gwmr = GWMR_MRFLD;
11734840be5SPandith N priv->wake_regs.gwsr = GWSR_MRFLD;
11834840be5SPandith N priv->wake_regs.gsir = GSIR_MRFLD;
11934840be5SPandith N
12034840be5SPandith N retval = devm_tng_gpio_probe(dev, priv);
12134840be5SPandith N if (retval)
12234840be5SPandith N return dev_err_probe(dev, retval, "tng_gpio_probe error\n");
123ccf6fd6dSAndy Shevchenko
124cd242b33SAndy Shevchenko pci_set_drvdata(pdev, priv);
125ccf6fd6dSAndy Shevchenko return 0;
126ccf6fd6dSAndy Shevchenko }
127ccf6fd6dSAndy Shevchenko
128ccf6fd6dSAndy Shevchenko static const struct pci_device_id mrfld_gpio_ids[] = {
129ccf6fd6dSAndy Shevchenko { PCI_VDEVICE(INTEL, 0x1199) },
130ccf6fd6dSAndy Shevchenko { }
131ccf6fd6dSAndy Shevchenko };
132ccf6fd6dSAndy Shevchenko MODULE_DEVICE_TABLE(pci, mrfld_gpio_ids);
133ccf6fd6dSAndy Shevchenko
134ccf6fd6dSAndy Shevchenko static struct pci_driver mrfld_gpio_driver = {
135ccf6fd6dSAndy Shevchenko .name = "gpio-merrifield",
136ccf6fd6dSAndy Shevchenko .id_table = mrfld_gpio_ids,
137ccf6fd6dSAndy Shevchenko .probe = mrfld_gpio_probe,
138ccf6fd6dSAndy Shevchenko };
139ccf6fd6dSAndy Shevchenko module_pci_driver(mrfld_gpio_driver);
140ccf6fd6dSAndy Shevchenko
141ccf6fd6dSAndy Shevchenko MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
142ccf6fd6dSAndy Shevchenko MODULE_DESCRIPTION("Intel Merrifield SoC GPIO driver");
143ccf6fd6dSAndy Shevchenko MODULE_LICENSE("GPL v2");
14434840be5SPandith N MODULE_IMPORT_NS(GPIO_TANGIER);
145