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/init.h>
23 #include <linux/module.h>
24 #include <linux/kernel.h>
25 #include <linux/platform_device.h>
26 #include <linux/pci.h>
27 #include <linux/mfd/core.h>
28 #include <linux/mfd/rdc321x.h>
29 
30 static struct rdc321x_wdt_pdata rdc321x_wdt_pdata;
31 
32 static struct resource rdc321x_wdt_resource[] = {
33 	{
34 		.name	= "wdt-reg",
35 		.start	= RDC321X_WDT_CTRL,
36 		.end	= RDC321X_WDT_CTRL + 0x3,
37 		.flags	= IORESOURCE_IO,
38 	}
39 };
40 
41 static struct rdc321x_gpio_pdata rdc321x_gpio_pdata = {
42 	.max_gpios	= RDC321X_MAX_GPIO,
43 };
44 
45 static struct resource rdc321x_gpio_resources[] = {
46 	{
47 		.name	= "gpio-reg1",
48 		.start	= RDC321X_GPIO_CTRL_REG1,
49 		.end	= RDC321X_GPIO_CTRL_REG1 + 0x7,
50 		.flags	= IORESOURCE_IO,
51 	}, {
52 		.name	= "gpio-reg2",
53 		.start	= RDC321X_GPIO_CTRL_REG2,
54 		.end	= RDC321X_GPIO_CTRL_REG2 + 0x7,
55 		.flags	= IORESOURCE_IO,
56 	}
57 };
58 
59 static struct mfd_cell rdc321x_sb_cells[] = {
60 	{
61 		.name		= "rdc321x-wdt",
62 		.resources	= rdc321x_wdt_resource,
63 		.num_resources	= ARRAY_SIZE(rdc321x_wdt_resource),
64 		.platform_data	= &rdc321x_wdt_pdata,
65 		.pdata_size	= sizeof(rdc321x_wdt_pdata),
66 	}, {
67 		.name		= "rdc321x-gpio",
68 		.resources	= rdc321x_gpio_resources,
69 		.num_resources	= ARRAY_SIZE(rdc321x_gpio_resources),
70 		.platform_data	= &rdc321x_gpio_pdata,
71 		.pdata_size	= sizeof(rdc321x_gpio_pdata),
72 	},
73 };
74 
75 static int rdc321x_sb_probe(struct pci_dev *pdev,
76 					const struct pci_device_id *ent)
77 {
78 	int err;
79 
80 	err = pci_enable_device(pdev);
81 	if (err) {
82 		dev_err(&pdev->dev, "failed to enable device\n");
83 		return err;
84 	}
85 
86 	rdc321x_gpio_pdata.sb_pdev = pdev;
87 	rdc321x_wdt_pdata.sb_pdev = pdev;
88 
89 	return mfd_add_devices(&pdev->dev, -1,
90 			       rdc321x_sb_cells, ARRAY_SIZE(rdc321x_sb_cells),
91 			       NULL, 0, NULL);
92 }
93 
94 static void rdc321x_sb_remove(struct pci_dev *pdev)
95 {
96 	mfd_remove_devices(&pdev->dev);
97 }
98 
99 static DEFINE_PCI_DEVICE_TABLE(rdc321x_sb_table) = {
100 	{ PCI_DEVICE(PCI_VENDOR_ID_RDC, PCI_DEVICE_ID_RDC_R6030) },
101 	{}
102 };
103 MODULE_DEVICE_TABLE(pci, rdc321x_sb_table);
104 
105 static struct pci_driver rdc321x_sb_driver = {
106 	.name		= "RDC321x Southbridge",
107 	.id_table	= rdc321x_sb_table,
108 	.probe		= rdc321x_sb_probe,
109 	.remove		= rdc321x_sb_remove,
110 };
111 
112 module_pci_driver(rdc321x_sb_driver);
113 
114 MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
115 MODULE_LICENSE("GPL");
116 MODULE_DESCRIPTION("RDC R-321x MFD southbridge driver");
117