ARM: debug: qcom: add UART addresses to Kconfig help for APQ8084
[pandora-kernel.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 <drm/drmP.h>
14
15 #include "cirrus_drv.h"
16
17 int cirrus_modeset = -1;
18
19 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
20 module_param_named(modeset, cirrus_modeset, int, 0400);
21
22 /*
23  * This is the generic driver code. This binds the driver to the drm core,
24  * which then performs further device association and calls our graphics init
25  * functions
26  */
27
28 static struct drm_driver driver;
29
30 /* only bind to the cirrus chip in qemu */
31 static DEFINE_PCI_DEVICE_TABLE(pciidlist) = {
32         { PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446, 0x1af4, 0x1100, 0,
33           0, 0 },
34         {0,}
35 };
36
37
38 static int cirrus_kick_out_firmware_fb(struct pci_dev *pdev)
39 {
40         struct apertures_struct *ap;
41         bool primary = false;
42
43         ap = alloc_apertures(1);
44         if (!ap)
45                 return -ENOMEM;
46
47         ap->ranges[0].base = pci_resource_start(pdev, 0);
48         ap->ranges[0].size = pci_resource_len(pdev, 0);
49
50 #ifdef CONFIG_X86
51         primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
52 #endif
53         remove_conflicting_framebuffers(ap, "cirrusdrmfb", primary);
54         kfree(ap);
55
56         return 0;
57 }
58
59 static int cirrus_pci_probe(struct pci_dev *pdev,
60                             const struct pci_device_id *ent)
61 {
62         int ret;
63
64         ret = cirrus_kick_out_firmware_fb(pdev);
65         if (ret)
66                 return ret;
67
68         return drm_get_pci_dev(pdev, ent, &driver);
69 }
70
71 static void cirrus_pci_remove(struct pci_dev *pdev)
72 {
73         struct drm_device *dev = pci_get_drvdata(pdev);
74
75         drm_put_dev(dev);
76 }
77
78 static const struct file_operations cirrus_driver_fops = {
79         .owner = THIS_MODULE,
80         .open = drm_open,
81         .release = drm_release,
82         .unlocked_ioctl = drm_ioctl,
83         .mmap = cirrus_mmap,
84         .poll = drm_poll,
85 #ifdef CONFIG_COMPAT
86         .compat_ioctl = drm_compat_ioctl,
87 #endif
88 };
89 static struct drm_driver driver = {
90         .driver_features = DRIVER_MODESET | DRIVER_GEM,
91         .load = cirrus_driver_load,
92         .unload = cirrus_driver_unload,
93         .fops = &cirrus_driver_fops,
94         .name = DRIVER_NAME,
95         .desc = DRIVER_DESC,
96         .date = DRIVER_DATE,
97         .major = DRIVER_MAJOR,
98         .minor = DRIVER_MINOR,
99         .patchlevel = DRIVER_PATCHLEVEL,
100         .gem_free_object = cirrus_gem_free_object,
101         .dumb_create = cirrus_dumb_create,
102         .dumb_map_offset = cirrus_dumb_mmap_offset,
103         .dumb_destroy = drm_gem_dumb_destroy,
104 };
105
106 static struct pci_driver cirrus_pci_driver = {
107         .name = DRIVER_NAME,
108         .id_table = pciidlist,
109         .probe = cirrus_pci_probe,
110         .remove = cirrus_pci_remove,
111 };
112
113 static int __init cirrus_init(void)
114 {
115 #ifdef CONFIG_VGA_CONSOLE
116         if (vgacon_text_force() && cirrus_modeset == -1)
117                 return -EINVAL;
118 #endif
119
120         if (cirrus_modeset == 0)
121                 return -EINVAL;
122         return drm_pci_init(&driver, &cirrus_pci_driver);
123 }
124
125 static void __exit cirrus_exit(void)
126 {
127         drm_pci_exit(&driver, &cirrus_pci_driver);
128 }
129
130 module_init(cirrus_init);
131 module_exit(cirrus_exit);
132
133 MODULE_DEVICE_TABLE(pci, pciidlist);
134 MODULE_AUTHOR(DRIVER_AUTHOR);
135 MODULE_DESCRIPTION(DRIVER_DESC);
136 MODULE_LICENSE("GPL");