GNU Linux-libre 4.4.289-gnu1
[releases.git] / drivers / mfd / rdc321x-southbridge.c
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_NUM_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");