/*
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* Copyright 2012 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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*/
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/*
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* Authors: Dave Airlie <airlied@redhat.com>
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*/
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#include <linux/console.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_gem_vram_helper.h>
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#include <drm/drm_probe_helper.h>
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#include "ast_drv.h"
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int ast_modeset = -1;
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MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
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module_param_named(modeset, ast_modeset, int, 0400);
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/*
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* DRM driver
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*/
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DEFINE_DRM_GEM_FOPS(ast_fops);
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static struct drm_driver ast_driver = {
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.driver_features = DRIVER_ATOMIC |
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DRIVER_GEM |
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DRIVER_MODESET,
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.fops = &ast_fops,
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.name = DRIVER_NAME,
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.desc = DRIVER_DESC,
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.date = DRIVER_DATE,
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.major = DRIVER_MAJOR,
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.minor = DRIVER_MINOR,
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.patchlevel = DRIVER_PATCHLEVEL,
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DRM_GEM_VRAM_DRIVER
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};
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/*
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* PCI driver
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*/
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#define PCI_VENDOR_ASPEED 0x1a03
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#define AST_VGA_DEVICE(id, info) { \
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.class = PCI_BASE_CLASS_DISPLAY << 16, \
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.class_mask = 0xff0000, \
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.vendor = PCI_VENDOR_ASPEED, \
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.device = id, \
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.subvendor = PCI_ANY_ID, \
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.subdevice = PCI_ANY_ID, \
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.driver_data = (unsigned long) info }
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static const struct pci_device_id ast_pciidlist[] = {
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AST_VGA_DEVICE(PCI_CHIP_AST2000, NULL),
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AST_VGA_DEVICE(PCI_CHIP_AST2100, NULL),
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{0, 0, 0},
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};
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MODULE_DEVICE_TABLE(pci, ast_pciidlist);
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static void ast_kick_out_firmware_fb(struct pci_dev *pdev)
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{
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struct apertures_struct *ap;
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bool primary = false;
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ap = alloc_apertures(1);
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if (!ap)
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return;
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ap->ranges[0].base = pci_resource_start(pdev, 0);
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ap->ranges[0].size = pci_resource_len(pdev, 0);
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#ifdef CONFIG_X86
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primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
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#endif
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drm_fb_helper_remove_conflicting_framebuffers(ap, "astdrmfb", primary);
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kfree(ap);
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}
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static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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{
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struct ast_private *ast;
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struct drm_device *dev;
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int ret;
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ast_kick_out_firmware_fb(pdev);
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ret = pcim_enable_device(pdev);
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if (ret)
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return ret;
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ast = ast_device_create(&ast_driver, pdev, ent->driver_data);
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if (IS_ERR(ast))
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return PTR_ERR(ast);
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dev = &ast->base;
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ret = drm_dev_register(dev, ent->driver_data);
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if (ret)
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return ret;
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drm_fbdev_generic_setup(dev, 32);
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return 0;
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}
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static void ast_pci_remove(struct pci_dev *pdev)
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{
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struct drm_device *dev = pci_get_drvdata(pdev);
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drm_dev_unregister(dev);
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drm_atomic_helper_shutdown(dev);
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}
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static int ast_drm_freeze(struct drm_device *dev)
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{
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int error;
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error = drm_mode_config_helper_suspend(dev);
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if (error)
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return error;
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pci_save_state(dev->pdev);
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return 0;
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}
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static int ast_drm_thaw(struct drm_device *dev)
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{
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ast_post_gpu(dev);
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return drm_mode_config_helper_resume(dev);
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}
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static int ast_drm_resume(struct drm_device *dev)
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{
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int ret;
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if (pci_enable_device(dev->pdev))
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return -EIO;
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ret = ast_drm_thaw(dev);
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if (ret)
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return ret;
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return 0;
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}
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static int ast_pm_suspend(struct device *dev)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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struct drm_device *ddev = pci_get_drvdata(pdev);
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int error;
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error = ast_drm_freeze(ddev);
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if (error)
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return error;
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pci_disable_device(pdev);
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pci_set_power_state(pdev, PCI_D3hot);
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return 0;
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}
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static int ast_pm_resume(struct device *dev)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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struct drm_device *ddev = pci_get_drvdata(pdev);
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return ast_drm_resume(ddev);
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}
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static int ast_pm_freeze(struct device *dev)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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struct drm_device *ddev = pci_get_drvdata(pdev);
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return ast_drm_freeze(ddev);
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}
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static int ast_pm_thaw(struct device *dev)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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struct drm_device *ddev = pci_get_drvdata(pdev);
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return ast_drm_thaw(ddev);
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}
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static int ast_pm_poweroff(struct device *dev)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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struct drm_device *ddev = pci_get_drvdata(pdev);
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return ast_drm_freeze(ddev);
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}
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static const struct dev_pm_ops ast_pm_ops = {
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.suspend = ast_pm_suspend,
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.resume = ast_pm_resume,
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.freeze = ast_pm_freeze,
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.thaw = ast_pm_thaw,
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.poweroff = ast_pm_poweroff,
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.restore = ast_pm_resume,
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};
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static struct pci_driver ast_pci_driver = {
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.name = DRIVER_NAME,
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.id_table = ast_pciidlist,
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.probe = ast_pci_probe,
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.remove = ast_pci_remove,
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.driver.pm = &ast_pm_ops,
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};
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static int __init ast_init(void)
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{
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if (vgacon_text_force() && ast_modeset == -1)
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return -EINVAL;
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if (ast_modeset == 0)
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return -EINVAL;
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return pci_register_driver(&ast_pci_driver);
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}
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static void __exit ast_exit(void)
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{
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pci_unregister_driver(&ast_pci_driver);
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}
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module_init(ast_init);
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module_exit(ast_exit);
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MODULE_AUTHOR(DRIVER_AUTHOR);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL and additional rights");
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