]> git.karo-electronics.de Git - karo-tx-linux.git/blob - drivers/gpu/drm/cirrus/cirrus_drv.c
Merge branch 'for-next' of git://github.com/rydberg/linux into from-henrik
[karo-tx-linux.git] / drivers / gpu / drm / cirrus / cirrus_drv.c
1 /*
2  * Copyright 2012 Red Hat <mjg@redhat.com>
3  *
4  * This file is subject to the terms and conditions of the GNU General
5  * Public License version 2. See the file COPYING in the main
6  * directory of this archive for more details.
7  *
8  * Authors: Matthew Garrett
9  *          Dave Airlie
10  */
11 #include <linux/module.h>
12 #include <linux/console.h>
13 #include "drmP.h"
14 #include "drm.h"
15
16 #include "cirrus_drv.h"
17
18 int cirrus_modeset = -1;
19
20 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
21 module_param_named(modeset, cirrus_modeset, int, 0400);
22
23 /*
24  * This is the generic driver code. This binds the driver to the drm core,
25  * which then performs further device association and calls our graphics init
26  * functions
27  */
28
29 static struct drm_driver driver;
30
31 /* only bind to the cirrus chip in qemu */
32 static DEFINE_PCI_DEVICE_TABLE(pciidlist) = {
33         { PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446, 0x1af4, 0x1100, 0,
34           0, 0 },
35         {0,}
36 };
37
38
39 static void cirrus_kick_out_firmware_fb(struct pci_dev *pdev)
40 {
41         struct apertures_struct *ap;
42         bool primary = false;
43
44         ap = alloc_apertures(1);
45         ap->ranges[0].base = pci_resource_start(pdev, 0);
46         ap->ranges[0].size = pci_resource_len(pdev, 0);
47
48 #ifdef CONFIG_X86
49         primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
50 #endif
51         remove_conflicting_framebuffers(ap, "cirrusdrmfb", primary);
52         kfree(ap);
53 }
54
55 static int __devinit
56 cirrus_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
57 {
58         cirrus_kick_out_firmware_fb(pdev);
59
60         return drm_get_pci_dev(pdev, ent, &driver);
61 }
62
63 static void cirrus_pci_remove(struct pci_dev *pdev)
64 {
65         struct drm_device *dev = pci_get_drvdata(pdev);
66
67         drm_put_dev(dev);
68 }
69
70 static const struct file_operations cirrus_driver_fops = {
71         .owner = THIS_MODULE,
72         .open = drm_open,
73         .release = drm_release,
74         .unlocked_ioctl = drm_ioctl,
75         .mmap = cirrus_mmap,
76         .poll = drm_poll,
77         .fasync = drm_fasync,
78 };
79 static struct drm_driver driver = {
80         .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_USE_MTRR,
81         .load = cirrus_driver_load,
82         .unload = cirrus_driver_unload,
83         .fops = &cirrus_driver_fops,
84         .name = DRIVER_NAME,
85         .desc = DRIVER_DESC,
86         .date = DRIVER_DATE,
87         .major = DRIVER_MAJOR,
88         .minor = DRIVER_MINOR,
89         .patchlevel = DRIVER_PATCHLEVEL,
90         .gem_init_object = cirrus_gem_init_object,
91         .gem_free_object = cirrus_gem_free_object,
92         .dumb_create = cirrus_dumb_create,
93         .dumb_map_offset = cirrus_dumb_mmap_offset,
94         .dumb_destroy = cirrus_dumb_destroy,
95 };
96
97 static struct pci_driver cirrus_pci_driver = {
98         .name = DRIVER_NAME,
99         .id_table = pciidlist,
100         .probe = cirrus_pci_probe,
101         .remove = cirrus_pci_remove,
102 };
103
104 static int __init cirrus_init(void)
105 {
106 #ifdef CONFIG_VGA_CONSOLE
107         if (vgacon_text_force() && cirrus_modeset == -1)
108                 return -EINVAL;
109 #endif
110
111         if (cirrus_modeset == 0)
112                 return -EINVAL;
113         return drm_pci_init(&driver, &cirrus_pci_driver);
114 }
115
116 static void __exit cirrus_exit(void)
117 {
118         drm_pci_exit(&driver, &cirrus_pci_driver);
119 }
120
121 module_init(cirrus_init);
122 module_exit(cirrus_exit);
123
124 MODULE_DEVICE_TABLE(pci, pciidlist);
125 MODULE_AUTHOR(DRIVER_AUTHOR);
126 MODULE_DESCRIPTION(DRIVER_DESC);
127 MODULE_LICENSE("GPL");