Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / gpu / drm / cirrus / cirrus_drv.c

diff --git a/kernel/drivers/gpu/drm/cirrus/cirrus_drv.c b/kernel/drivers/gpu/drm/cirrus/cirrus_drv.c
new file mode 100644 (file)
index 0000000..b914003
--- /dev/null
+++ b/kernel/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");