1 /*
2  * RDC321x MFD southbridge driver
3  *
4  * Copyright (C) 2007-2010 Florian Fainelli <florian@openwrt.org>
5  * Copyright (C) 2010 Bernhard Loos <bernhardloos@googlemail.com>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20  *
21  */
22 #include <linux/module.h>
23 #include <linux/kernel.h>
24 #include <linux/platform_device.h>
25 #include <linux/pci.h>
26 #include <linux/mfd/core.h>
27 #include <linux/mfd/rdc321x.h>
28 
29 static struct rdc321x_wdt_pdata rdc321x_wdt_pdata;
30 
31 static struct resource rdc321x_wdt_resource[] = {
32 	{
33 		.name	= "wdt-reg",
34 		.start	= RDC321X_WDT_CTRL,
35 		.end	= RDC321X_WDT_CTRL + 0x3,
36 		.flags	= IORESOURCE_IO,
37 	}
38 };
39 
40 static struct rdc321x_gpio_pdata rdc321x_gpio_pdata = {
41 	.max_gpios	= RDC321X_MAX_GPIO,
42 };
43 
44 static struct resource rdc321x_gpio_resources[] = {
45 	{
46 		.name	= "gpio-reg1",
47 		.start	= RDC321X_GPIO_CTRL_REG1,
48 		.end	= RDC321X_GPIO_CTRL_REG1 + 0x7,
49 		.flags	= IORESOURCE_IO,
50 	}, {
51 		.name	= "gpio-reg2",
52 		.start	= RDC321X_GPIO_CTRL_REG2,
53 		.end	= RDC321X_GPIO_CTRL_REG2 + 0x7,
54 		.flags	= IORESOURCE_IO,
55 	}
56 };
57 
58 static const struct mfd_cell rdc321x_sb_cells[] = {
59 	{
60 		.name		= "rdc321x-wdt",
61 		.resources	= rdc321x_wdt_resource,
62 		.num_resources	= ARRAY_SIZE(rdc321x_wdt_resource),
63 		.platform_data	= &rdc321x_wdt_pdata,
64 		.pdata_size	= sizeof(rdc321x_wdt_pdata),
65 	}, {
66 		.name		= "rdc321x-gpio",
67 		.resources	= rdc321x_gpio_resources,
68 		.num_resources	= ARRAY_SIZE(rdc321x_gpio_resources),
69 		.platform_data	= &rdc321x_gpio_pdata,
70 		.pdata_size	= sizeof(rdc321x_gpio_pdata),
71 	},
72 };
73 
74 static int rdc321x_sb_probe(struct pci_dev *pdev,
75 					const struct pci_device_id *ent)
76 {
77 	int err;
78 
79 	err = pci_enable_device(pdev);
80 	if (err) {
81 		dev_err(&pdev->dev, "failed to enable device\n");
82 		return err;
83 	}
84 
85 	rdc321x_gpio_pdata.sb_pdev = pdev;
86 	rdc321x_wdt_pdata.sb_pdev = pdev;
87 
88 	return mfd_add_devices(&pdev->dev, -1,
89 			       rdc321x_sb_cells, ARRAY_SIZE(rdc321x_sb_cells),
90 			       NULL, 0, NULL);
91 }
92 
93 static void rdc321x_sb_remove(struct pci_dev *pdev)
94 {
95 	mfd_remove_devices(&pdev->dev);
96 }
97 
98 static const struct pci_device_id rdc321x_sb_table[] = {
99 	{ PCI_DEVICE(PCI_VENDOR_ID_RDC, PCI_DEVICE_ID_RDC_R6030) },
100 	{}
101 };
102 MODULE_DEVICE_TABLE(pci, rdc321x_sb_table);
103 
104 static struct pci_driver rdc321x_sb_driver = {
105 	.name		= "RDC321x Southbridge",
106 	.id_table	= rdc321x_sb_table,
107 	.probe		= rdc321x_sb_probe,
108 	.remove		= rdc321x_sb_remove,
109 };
110 
111 module_pci_driver(rdc321x_sb_driver);
112 
113 MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
114 MODULE_LICENSE("GPL");
115 MODULE_DESCRIPTION("RDC R-321x MFD southbridge driver");
116