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#include <drm/drm_crtc_helper.h>
 15
 16#include "cirrus_drv.h"
 17
 18int cirrus_modeset = -1;
 19
 20MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
 21module_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
 29static struct drm_driver driver;
 30
 31/* only bind to the cirrus chip in qemu */
 32static 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
 39static int 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	if (!ap)
 46		return -ENOMEM;
 47
 48	ap->ranges[0].base = pci_resource_start(pdev, 0);
 49	ap->ranges[0].size = pci_resource_len(pdev, 0);
 50
 51#ifdef CONFIG_X86
 52	primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
 53#endif
 54	remove_conflicting_framebuffers(ap, "cirrusdrmfb", primary);
 55	kfree(ap);
 56
 57	return 0;
 58}
 59
 60static int cirrus_pci_probe(struct pci_dev *pdev,
 61			    const struct pci_device_id *ent)
 62{
 63	int ret;
 64
 65	ret = cirrus_kick_out_firmware_fb(pdev);
 66	if (ret)
 67		return ret;
 68
 69	return drm_get_pci_dev(pdev, ent, &driver);
 70}
 71
 72static void cirrus_pci_remove(struct pci_dev *pdev)
 73{
 74	struct drm_device *dev = pci_get_drvdata(pdev);
 75
 76	drm_put_dev(dev);
 77}
 78
 79static int cirrus_pm_suspend(struct device *dev)
 80{
 81	struct pci_dev *pdev = to_pci_dev(dev);
 82	struct drm_device *drm_dev = pci_get_drvdata(pdev);
 83	struct cirrus_device *cdev = drm_dev->dev_private;
 84
 85	drm_kms_helper_poll_disable(drm_dev);
 86
 87	if (cdev->mode_info.gfbdev) {
 88		console_lock();
 89		fb_set_suspend(cdev->mode_info.gfbdev->helper.fbdev, 1);
 90		console_unlock();
 91	}
 92
 93	return 0;
 94}
 95
 96static int cirrus_pm_resume(struct device *dev)
 97{
 98	struct pci_dev *pdev = to_pci_dev(dev);
 99	struct drm_device *drm_dev = pci_get_drvdata(pdev);
100	struct cirrus_device *cdev = drm_dev->dev_private;
101
102	drm_helper_resume_force_mode(drm_dev);
103
104	if (cdev->mode_info.gfbdev) {
105		console_lock();
106		fb_set_suspend(cdev->mode_info.gfbdev->helper.fbdev, 0);
107		console_unlock();
108	}
109
110	drm_kms_helper_poll_enable(drm_dev);
111	return 0;
112}
113
114static const struct file_operations cirrus_driver_fops = {
115	.owner = THIS_MODULE,
116	.open = drm_open,
117	.release = drm_release,
118	.unlocked_ioctl = drm_ioctl,
119	.mmap = cirrus_mmap,
120	.poll = drm_poll,
121#ifdef CONFIG_COMPAT
122	.compat_ioctl = drm_compat_ioctl,
123#endif
124};
125static struct drm_driver driver = {
126	.driver_features = DRIVER_MODESET | DRIVER_GEM,
127	.load = cirrus_driver_load,
128	.unload = cirrus_driver_unload,
129	.fops = &cirrus_driver_fops,
130	.name = DRIVER_NAME,
131	.desc = DRIVER_DESC,
132	.date = DRIVER_DATE,
133	.major = DRIVER_MAJOR,
134	.minor = DRIVER_MINOR,
135	.patchlevel = DRIVER_PATCHLEVEL,
136	.gem_free_object = cirrus_gem_free_object,
137	.dumb_create = cirrus_dumb_create,
138	.dumb_map_offset = cirrus_dumb_mmap_offset,
139	.dumb_destroy = drm_gem_dumb_destroy,
140};
141
142static const struct dev_pm_ops cirrus_pm_ops = {
143	SET_SYSTEM_SLEEP_PM_OPS(cirrus_pm_suspend,
144				cirrus_pm_resume)
145};
146
147static struct pci_driver cirrus_pci_driver = {
148	.name = DRIVER_NAME,
149	.id_table = pciidlist,
150	.probe = cirrus_pci_probe,
151	.remove = cirrus_pci_remove,
152	.driver.pm = &cirrus_pm_ops,
153};
154
155static int __init cirrus_init(void)
156{
157#ifdef CONFIG_VGA_CONSOLE
158	if (vgacon_text_force() && cirrus_modeset == -1)
159		return -EINVAL;
160#endif
161
162	if (cirrus_modeset == 0)
163		return -EINVAL;
164	return drm_pci_init(&driver, &cirrus_pci_driver);
165}
166
167static void __exit cirrus_exit(void)
168{
169	drm_pci_exit(&driver, &cirrus_pci_driver);
170}
171
172module_init(cirrus_init);
173module_exit(cirrus_exit);
174
175MODULE_DEVICE_TABLE(pci, pciidlist);
176MODULE_AUTHOR(DRIVER_AUTHOR);
177MODULE_DESCRIPTION(DRIVER_DESC);
178MODULE_LICENSE("GPL");