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/*
* Copyright 2012 Red Hat <mjg@redhat.com>
*
* This file is subject to the terms and conditions of the GNU General
* Public License version 2. See the file COPYING in the main
* directory of this archive for more details.
*
* Authors: Matthew Garrett
* Dave Airlie
*/
#include <linux/module.h>
#include <linux/console.h>
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include "cirrus_drv.h"
int cirrus_modeset = -1;
int cirrus_bpp = 24;
MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
module_param_named(modeset, cirrus_modeset, int, 0400);
MODULE_PARM_DESC(bpp, "Max bits-per-pixel (default:24)");
module_param_named(bpp, cirrus_bpp, int, 0400);
/*
* This is the generic driver code. This binds the driver to the drm core,
* which then performs further device association and calls our graphics init
* functions
*/
static struct drm_driver driver;
/* only bind to the cirrus chip in qemu */
static const struct pci_device_id pciidlist[] = {
{ PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446,
PCI_SUBVENDOR_ID_REDHAT_QUMRANET, PCI_SUBDEVICE_ID_QEMU,
0, 0, 0 },
{ PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446, PCI_VENDOR_ID_XEN,
0x0001, 0, 0, 0 },
{0,}
};
static int cirrus_kick_out_firmware_fb(struct pci_dev *pdev)
{
struct apertures_struct *ap;
bool primary = false;
ap = alloc_apertures(1);
if (!ap)
return -ENOMEM;
ap->ranges[0].base = pci_resource_start(pdev, 0);
ap->ranges[0].size = pci_resource_len(pdev, 0);
#ifdef CONFIG_X86
primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
#endif
drm_fb_helper_remove_conflicting_framebuffers(ap, "cirrusdrmfb", primary);
kfree(ap);
return 0;
}
static int cirrus_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
int ret;
ret = cirrus_kick_out_firmware_fb(pdev);
if (ret)
return ret;
return drm_get_pci_dev(pdev, ent, &driver);
}
static void cirrus_pci_remove(struct pci_dev *pdev)
{
struct drm_device *dev = pci_get_drvdata(pdev);
drm_put_dev(dev);
}
#ifdef CONFIG_PM_SLEEP
static int cirrus_pm_suspend(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct drm_device *drm_dev = pci_get_drvdata(pdev);
struct cirrus_device *cdev = drm_dev->dev_private;
drm_kms_helper_poll_disable(drm_dev);
if (cdev->mode_info.gfbdev) {
console_lock();
drm_fb_helper_set_suspend(&cdev->mode_info.gfbdev->helper, 1);
console_unlock();
}
return 0;
}
static int cirrus_pm_resume(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct drm_device *drm_dev = pci_get_drvdata(pdev);
struct cirrus_device *cdev = drm_dev->dev_private;
drm_helper_resume_force_mode(drm_dev);
if (cdev->mode_info.gfbdev) {
console_lock();
drm_fb_helper_set_suspend(&cdev->mode_info.gfbdev->helper, 0);
console_unlock();
}
drm_kms_helper_poll_enable(drm_dev);
return 0;
}
#endif
static const struct file_operations cirrus_driver_fops = {
.owner = THIS_MODULE,
.open = drm_open,
.release = drm_release,
.unlocked_ioctl = drm_ioctl,
.mmap = cirrus_mmap,
.poll = drm_poll,
.compat_ioctl = drm_compat_ioctl,
};
static struct drm_driver driver = {
.driver_features = DRIVER_MODESET | DRIVER_GEM,
.load = cirrus_driver_load,
.unload = cirrus_driver_unload,
.fops = &cirrus_driver_fops,
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.date = DRIVER_DATE,
.major = DRIVER_MAJOR,
.minor = DRIVER_MINOR,
.patchlevel = DRIVER_PATCHLEVEL,
.gem_free_object_unlocked = cirrus_gem_free_object,
.dumb_create = cirrus_dumb_create,
.dumb_map_offset = cirrus_dumb_mmap_offset,
};
static const struct dev_pm_ops cirrus_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(cirrus_pm_suspend,
cirrus_pm_resume)
};
static struct pci_driver cirrus_pci_driver = {
.name = DRIVER_NAME,
.id_table = pciidlist,
.probe = cirrus_pci_probe,
.remove = cirrus_pci_remove,
.driver.pm = &cirrus_pm_ops,
};
static int __init cirrus_init(void)
{
if (vgacon_text_force() && cirrus_modeset == -1)
return -EINVAL;
if (cirrus_modeset == 0)
return -EINVAL;
return pci_register_driver(&cirrus_pci_driver);
}
static void __exit cirrus_exit(void)
{
pci_unregister_driver(&cirrus_pci_driver);
}
module_init(cirrus_init);
module_exit(cirrus_exit);
MODULE_DEVICE_TABLE(pci, pciidlist);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
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