diff options
Diffstat (limited to 'drivers/gpu/drm/ast/ast_drv.c')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_drv.c | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/drivers/gpu/drm/ast/ast_drv.c b/drivers/gpu/drm/ast/ast_drv.c new file mode 100644 index 000000000..800471f2a --- /dev/null +++ b/drivers/gpu/drm/ast/ast_drv.c @@ -0,0 +1,219 @@ +/* + * 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_vram_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_VRAM_DRIVER +}; + +/* + * 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_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) +{ + struct ast_private *ast; + struct drm_device *dev; + int ret; + + ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &ast_driver); + 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"); |