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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/pci.h>
#include <drm/drm_aperture.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_gem_shmem_helper.h>
#include <drm/drm_module.h>
#include <drm/drm_probe_helper.h>
#include "ast_drv.h"
static int ast_modeset = -1;
MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
module_param_named(modeset, ast_modeset, int, 0400);
/*
* DRM driver
*/
DEFINE_DRM_GEM_FOPS(ast_fops);
static const struct drm_driver ast_driver = {
.driver_features = DRIVER_ATOMIC |
DRIVER_GEM |
DRIVER_MODESET,
.fops = &ast_fops,
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.date = DRIVER_DATE,
.major = DRIVER_MAJOR,
.minor = DRIVER_MINOR,
.patchlevel = DRIVER_PATCHLEVEL,
DRM_GEM_SHMEM_DRIVER_OPS
};
/*
* PCI driver
*/
#define PCI_VENDOR_ASPEED 0x1a03
#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 ast_pciidlist[] = {
AST_VGA_DEVICE(PCI_CHIP_AST2000, NULL),
AST_VGA_DEVICE(PCI_CHIP_AST2100, NULL),
{0, 0, 0},
};
MODULE_DEVICE_TABLE(pci, ast_pciidlist);
static int ast_remove_conflicting_framebuffers(struct pci_dev *pdev)
{
bool primary = false;
resource_size_t base, size;
base = pci_resource_start(pdev, 0);
size = pci_resource_len(pdev, 0);
#ifdef CONFIG_X86
primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
#endif
return drm_aperture_remove_conflicting_framebuffers(base, size, primary, &ast_driver);
}
static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct ast_private *ast;
struct drm_device *dev;
int ret;
ret = ast_remove_conflicting_framebuffers(pdev);
if (ret)
return ret;
ret = pcim_enable_device(pdev);
if (ret)
return ret;
ast = ast_device_create(&ast_driver, pdev, ent->driver_data);
if (IS_ERR(ast))
return PTR_ERR(ast);
dev = &ast->base;
ret = drm_dev_register(dev, ent->driver_data);
if (ret)
return ret;
drm_fbdev_generic_setup(dev, 32);
return 0;
}
static void ast_pci_remove(struct pci_dev *pdev)
{
struct drm_device *dev = pci_get_drvdata(pdev);
drm_dev_unregister(dev);
drm_atomic_helper_shutdown(dev);
}
static int ast_drm_freeze(struct drm_device *dev)
{
int error;
error = drm_mode_config_helper_suspend(dev);
if (error)
return error;
pci_save_state(to_pci_dev(dev->dev));
return 0;
}
static int ast_drm_thaw(struct drm_device *dev)
{
ast_post_gpu(dev);
return drm_mode_config_helper_resume(dev);
}
static int ast_drm_resume(struct drm_device *dev)
{
if (pci_enable_device(to_pci_dev(dev->dev)))
return -EIO;
return ast_drm_thaw(dev);
}
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);
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 = ast_pciidlist,
.probe = ast_pci_probe,
.remove = ast_pci_remove,
.driver.pm = &ast_pm_ops,
};
drm_module_pci_driver_if_modeset(ast_pci_driver, ast_modeset);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL and additional rights");
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