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/*
* Copyright 2012 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
*/
/*
* Authors: Dave Airlie <airlied@redhat.com>
*/
#include <linux/module.h>
#include <linux/console.h>
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include "ast_drv.h"
int ast_modeset = -1;
MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
module_param_named(modeset, ast_modeset, int, 0400);
#define PCI_VENDOR_ASPEED 0x1a03
static struct drm_driver driver;
#define AST_VGA_DEVICE(id, info) { \
.class = PCI_BASE_CLASS_DISPLAY << 16, \
.class_mask = 0xff0000, \
.vendor = PCI_VENDOR_ASPEED, \
.device = id, \
.subvendor = PCI_ANY_ID, \
.subdevice = PCI_ANY_ID, \
.driver_data = (unsigned long) info }
static const struct pci_device_id pciidlist[] = {
AST_VGA_DEVICE(PCI_CHIP_AST2000, NULL),
AST_VGA_DEVICE(PCI_CHIP_AST2100, NULL),
/* AST_VGA_DEVICE(PCI_CHIP_AST1180, NULL), - don't bind to 1180 for now */
{0, 0, 0},
};
MODULE_DEVICE_TABLE(pci, pciidlist);
static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
return drm_get_pci_dev(pdev, ent, &driver);
}
static void
ast_pci_remove(struct pci_dev *pdev)
{
struct drm_device *dev = pci_get_drvdata(pdev);
drm_put_dev(dev);
}
static int ast_drm_freeze(struct drm_device *dev)
{
drm_kms_helper_poll_disable(dev);
pci_save_state(dev->pdev);
console_lock();
ast_fbdev_set_suspend(dev, 1);
console_unlock();
return 0;
}
static int ast_drm_thaw(struct drm_device *dev)
{
int error = 0;
ast_post_gpu(dev);
drm_mode_config_reset(dev);
drm_helper_resume_force_mode(dev);
console_lock();
ast_fbdev_set_suspend(dev, 0);
console_unlock();
return error;
}
static int ast_drm_resume(struct drm_device *dev)
{
int ret;
if (pci_enable_device(dev->pdev))
return -EIO;
ret = ast_drm_thaw(dev);
if (ret)
return ret;
drm_kms_helper_poll_enable(dev);
return 0;
}
static int ast_pm_suspend(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct drm_device *ddev = pci_get_drvdata(pdev);
int error;
error = ast_drm_freeze(ddev);
if (error)
return error;
pci_disable_device(pdev);
pci_set_power_state(pdev, PCI_D3hot);
return 0;
}
static int ast_pm_resume(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct drm_device *ddev = pci_get_drvdata(pdev);
return ast_drm_resume(ddev);
}
static int ast_pm_freeze(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct drm_device *ddev = pci_get_drvdata(pdev);
if (!ddev || !ddev->dev_private)
return -ENODEV;
return ast_drm_freeze(ddev);
}
static int ast_pm_thaw(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct drm_device *ddev = pci_get_drvdata(pdev);
return ast_drm_thaw(ddev);
}
static int ast_pm_poweroff(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct drm_device *ddev = pci_get_drvdata(pdev);
return ast_drm_freeze(ddev);
}
static const struct dev_pm_ops ast_pm_ops = {
.suspend = ast_pm_suspend,
.resume = ast_pm_resume,
.freeze = ast_pm_freeze,
.thaw = ast_pm_thaw,
.poweroff = ast_pm_poweroff,
.restore = ast_pm_resume,
};
static struct pci_driver ast_pci_driver = {
.name = DRIVER_NAME,
.id_table = pciidlist,
.probe = ast_pci_probe,
.remove = ast_pci_remove,
.driver.pm = &ast_pm_ops,
};
static const struct file_operations ast_fops = {
.owner = THIS_MODULE,
.open = drm_open,
.release = drm_release,
.unlocked_ioctl = drm_ioctl,
.mmap = ast_mmap,
.poll = drm_poll,
.compat_ioctl = drm_compat_ioctl,
.read = drm_read,
};
static struct drm_driver driver = {
.driver_features = DRIVER_MODESET | DRIVER_GEM,
.load = ast_driver_load,
.unload = ast_driver_unload,
.fops = &ast_fops,
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.date = DRIVER_DATE,
.major = DRIVER_MAJOR,
.minor = DRIVER_MINOR,
.patchlevel = DRIVER_PATCHLEVEL,
.gem_free_object_unlocked = ast_gem_free_object,
.dumb_create = ast_dumb_create,
.dumb_map_offset = ast_dumb_mmap_offset,
};
static int __init ast_init(void)
{
if (vgacon_text_force() && ast_modeset == -1)
return -EINVAL;
if (ast_modeset == 0)
return -EINVAL;
return pci_register_driver(&ast_pci_driver);
}
static void __exit ast_exit(void)
{
pci_unregister_driver(&ast_pci_driver);
}
module_init(ast_init);
module_exit(ast_exit);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL and additional rights");
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