diff options
Diffstat (limited to 'drivers/gpu/drm/cirrus/cirrus_drv.c')
| -rw-r--r-- | drivers/gpu/drm/cirrus/cirrus_drv.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/drivers/gpu/drm/cirrus/cirrus_drv.c b/drivers/gpu/drm/cirrus/cirrus_drv.c new file mode 100644 index 000000000..b91400329 --- /dev/null +++ b/drivers/gpu/drm/cirrus/cirrus_drv.c @@ -0,0 +1,186 @@ +/* + * 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, 0x1af4, 0x1100, 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 + 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(); + fb_set_suspend(cdev->mode_info.gfbdev->helper.fbdev, 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(); + fb_set_suspend(cdev->mode_info.gfbdev->helper.fbdev, 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, +#ifdef CONFIG_COMPAT + .compat_ioctl = drm_compat_ioctl, +#endif +}; +static struct drm_driver driver = { + .driver_features = DRIVER_MODESET | DRIVER_GEM, + .load = cirrus_driver_load, + .unload = cirrus_driver_unload, + .set_busid = drm_pci_set_busid, + .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 = cirrus_gem_free_object, + .dumb_create = cirrus_dumb_create, + .dumb_map_offset = cirrus_dumb_mmap_offset, + .dumb_destroy = drm_gem_dumb_destroy, +}; + +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) +{ +#ifdef CONFIG_VGA_CONSOLE + if (vgacon_text_force() && cirrus_modeset == -1) + return -EINVAL; +#endif + + if (cirrus_modeset == 0) + return -EINVAL; + return drm_pci_init(&driver, &cirrus_pci_driver); +} + +static void __exit cirrus_exit(void) +{ + drm_pci_exit(&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"); |