1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * RDC321x MFD southbridge driver
4  *
5  * Copyright (C) 2007-2010 Florian Fainelli <florian@openwrt.org>
6  * Copyright (C) 2010 Bernhard Loos <bernhardloos@googlemail.com>
7  */
8 #include <linux/module.h>
9 #include <linux/kernel.h>
10 #include <linux/platform_device.h>
11 #include <linux/pci.h>
12 #include <linux/mfd/core.h>
13 #include <linux/mfd/rdc321x.h>
14 
15 static struct rdc321x_wdt_pdata rdc321x_wdt_pdata;
16 
17 static const struct resource rdc321x_wdt_resource[] = {
18 	{
19 		.name	= "wdt-reg",
20 		.start	= RDC321X_WDT_CTRL,
21 		.end	= RDC321X_WDT_CTRL + 0x3,
22 		.flags	= IORESOURCE_IO,
23 	}
24 };
25 
26 static struct rdc321x_gpio_pdata rdc321x_gpio_pdata = {
27 	.max_gpios	= RDC321X_NUM_GPIO,
28 };
29 
30 static const struct resource rdc321x_gpio_resources[] = {
31 	{
32 		.name	= "gpio-reg1",
33 		.start	= RDC321X_GPIO_CTRL_REG1,
34 		.end	= RDC321X_GPIO_CTRL_REG1 + 0x7,
35 		.flags	= IORESOURCE_IO,
36 	}, {
37 		.name	= "gpio-reg2",
38 		.start	= RDC321X_GPIO_CTRL_REG2,
39 		.end	= RDC321X_GPIO_CTRL_REG2 + 0x7,
40 		.flags	= IORESOURCE_IO,
41 	}
42 };
43 
44 static const struct mfd_cell rdc321x_sb_cells[] = {
45 	{
46 		.name		= "rdc321x-wdt",
47 		.resources	= rdc321x_wdt_resource,
48 		.num_resources	= ARRAY_SIZE(rdc321x_wdt_resource),
49 		.platform_data	= &rdc321x_wdt_pdata,
50 		.pdata_size	= sizeof(rdc321x_wdt_pdata),
51 	}, {
52 		.name		= "rdc321x-gpio",
53 		.resources	= rdc321x_gpio_resources,
54 		.num_resources	= ARRAY_SIZE(rdc321x_gpio_resources),
55 		.platform_data	= &rdc321x_gpio_pdata,
56 		.pdata_size	= sizeof(rdc321x_gpio_pdata),
57 	},
58 };
59 
rdc321x_sb_probe(struct pci_dev * pdev,const struct pci_device_id * ent)60 static int rdc321x_sb_probe(struct pci_dev *pdev,
61 					const struct pci_device_id *ent)
62 {
63 	int err;
64 
65 	err = pci_enable_device(pdev);
66 	if (err) {
67 		dev_err(&pdev->dev, "failed to enable device\n");
68 		return err;
69 	}
70 
71 	rdc321x_gpio_pdata.sb_pdev = pdev;
72 	rdc321x_wdt_pdata.sb_pdev = pdev;
73 
74 	return devm_mfd_add_devices(&pdev->dev, -1,
75 				    rdc321x_sb_cells,
76 				    ARRAY_SIZE(rdc321x_sb_cells),
77 				    NULL, 0, NULL);
78 }
79 
80 static const struct pci_device_id rdc321x_sb_table[] = {
81 	{ PCI_DEVICE(PCI_VENDOR_ID_RDC, PCI_DEVICE_ID_RDC_R6030) },
82 	{}
83 };
84 MODULE_DEVICE_TABLE(pci, rdc321x_sb_table);
85 
86 static struct pci_driver rdc321x_sb_driver = {
87 	.name		= "RDC321x Southbridge",
88 	.id_table	= rdc321x_sb_table,
89 	.probe		= rdc321x_sb_probe,
90 };
91 
92 module_pci_driver(rdc321x_sb_driver);
93 
94 MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
95 MODULE_LICENSE("GPL");
96 MODULE_DESCRIPTION("RDC R-321x MFD southbridge driver");
97