drivers/gpu/drm/ast/ast_drv.c

   1 /*
   2  * Copyright 2012 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the
   6  * "Software"), to deal in the Software without restriction, including
   7  * without limitation the rights to use, copy, modify, merge, publish,
   8  * distribute, sub license, and/or sell copies of the Software, and to
   9  * permit persons to whom the Software is furnished to do so, subject to
  10  * the following conditions:
  11  *
  12  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  13  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  14  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  15  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  16  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  17  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  18  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  19  *
  20  * The above copyright notice and this permission notice (including the
  21  * next paragraph) shall be included in all copies or substantial portions
  22  * of the Software.
  23  *
  24  */
  25 /*
  26  * Authors: Dave Airlie <airlied@redhat.com>
  27  */
  28 #include <linux/module.h>
  29 #include <linux/console.h>
  30
  31 #include <drm/drmP.h>
  32 #include <drm/drm_crtc_helper.h>
  33
  34 #include "ast_drv.h"
  35
  36 int ast_modeset = -1;
  37
  38 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
  39 module_param_named(modeset, ast_modeset, int, 0400);
  40
  41 #define PCI_VENDOR_ASPEED 0x1a03
  42
  43 static struct drm_driver driver;
  44
  45 #define AST_VGA_DEVICE(id, info) {              \
  46         .class = PCI_BASE_CLASS_DISPLAY << 16,  \
  47         .class_mask = 0xff0000,                 \
  48         .vendor = PCI_VENDOR_ASPEED,                    \
  49         .device = id,                           \
  50         .subvendor = PCI_ANY_ID,                \
  51         .subdevice = PCI_ANY_ID,                \
  52         .driver_data = (unsigned long) info }
  53
  54 static DEFINE_PCI_DEVICE_TABLE(pciidlist) = {
  55         AST_VGA_DEVICE(PCI_CHIP_AST2000, NULL),
  56         AST_VGA_DEVICE(PCI_CHIP_AST2100, NULL),
  57         /*      AST_VGA_DEVICE(PCI_CHIP_AST1180, NULL), - don't bind to 1180 for now */
  58         {0, 0, 0},
  59 };
  60
  61 MODULE_DEVICE_TABLE(pci, pciidlist);
  62
  63 static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  64 {
  65         return drm_get_pci_dev(pdev, ent, &driver);
  66 }
  67
  68 static void
  69 ast_pci_remove(struct pci_dev *pdev)
  70 {
  71         struct drm_device *dev = pci_get_drvdata(pdev);
  72
  73         drm_put_dev(dev);
  74 }
  75
  76
  77
  78 static int ast_drm_freeze(struct drm_device *dev)
  79 {
  80         drm_kms_helper_poll_disable(dev);
  81
  82         pci_save_state(dev->pdev);
  83
  84         console_lock();
  85         ast_fbdev_set_suspend(dev, 1);
  86         console_unlock();
  87         return 0;
  88 }
  89
  90 static int ast_drm_thaw(struct drm_device *dev)
  91 {
  92         int error = 0;
  93
  94         ast_post_gpu(dev);
  95
  96         drm_mode_config_reset(dev);
  97         drm_modeset_lock_all(dev);
  98         drm_helper_resume_force_mode(dev);
  99         drm_modeset_unlock_all(dev);
 100
 101         console_lock();
 102         ast_fbdev_set_suspend(dev, 0);
 103         console_unlock();
 104         return error;
 105 }
 106
 107 static int ast_drm_resume(struct drm_device *dev)
 108 {
 109         int ret;
 110
 111         if (pci_enable_device(dev->pdev))
 112                 return -EIO;
 113
 114         ret = ast_drm_thaw(dev);
 115         if (ret)
 116                 return ret;
 117
 118         drm_kms_helper_poll_enable(dev);
 119         return 0;
 120 }
 121
 122 static int ast_pm_suspend(struct device *dev)
 123 {
 124         struct pci_dev *pdev = to_pci_dev(dev);
 125         struct drm_device *ddev = pci_get_drvdata(pdev);
 126         int error;
 127
 128         error = ast_drm_freeze(ddev);
 129         if (error)
 130                 return error;
 131
 132         pci_disable_device(pdev);
 133         pci_set_power_state(pdev, PCI_D3hot);
 134         return 0;
 135 }
 136 static int ast_pm_resume(struct device *dev)
 137 {
 138         struct pci_dev *pdev = to_pci_dev(dev);
 139         struct drm_device *ddev = pci_get_drvdata(pdev);
 140         return ast_drm_resume(ddev);
 141 }
 142
 143 static int ast_pm_freeze(struct device *dev)
 144 {
 145         struct pci_dev *pdev = to_pci_dev(dev);
 146         struct drm_device *ddev = pci_get_drvdata(pdev);
 147
 148         if (!ddev || !ddev->dev_private)
 149                 return -ENODEV;
 150         return ast_drm_freeze(ddev);
 151
 152 }
 153
 154 static int ast_pm_thaw(struct device *dev)
 155 {
 156         struct pci_dev *pdev = to_pci_dev(dev);
 157         struct drm_device *ddev = pci_get_drvdata(pdev);
 158         return ast_drm_thaw(ddev);
 159 }
 160
 161 static int ast_pm_poweroff(struct device *dev)
 162 {
 163         struct pci_dev *pdev = to_pci_dev(dev);
 164         struct drm_device *ddev = pci_get_drvdata(pdev);
 165
 166         return ast_drm_freeze(ddev);
 167 }
 168
 169 static const struct dev_pm_ops ast_pm_ops = {
 170         .suspend = ast_pm_suspend,
 171         .resume = ast_pm_resume,
 172         .freeze = ast_pm_freeze,
 173         .thaw = ast_pm_thaw,
 174         .poweroff = ast_pm_poweroff,
 175         .restore = ast_pm_resume,
 176 };
 177
 178 static struct pci_driver ast_pci_driver = {
 179         .name = DRIVER_NAME,
 180         .id_table = pciidlist,
 181         .probe = ast_pci_probe,
 182         .remove = ast_pci_remove,
 183         .driver.pm = &ast_pm_ops,
 184 };
 185
 186 static const struct file_operations ast_fops = {
 187         .owner = THIS_MODULE,
 188         .open = drm_open,
 189         .release = drm_release,
 190         .unlocked_ioctl = drm_ioctl,
 191         .mmap = ast_mmap,
 192         .poll = drm_poll,
 193 #ifdef CONFIG_COMPAT
 194         .compat_ioctl = drm_compat_ioctl,
 195 #endif
 196         .read = drm_read,
 197 };
 198
 199 static struct drm_driver driver = {
 200         .driver_features = DRIVER_MODESET | DRIVER_GEM,
 201         .dev_priv_size = 0,
 202
 203         .load = ast_driver_load,
 204         .unload = ast_driver_unload,
 205
 206         .fops = &ast_fops,
 207         .name = DRIVER_NAME,
 208         .desc = DRIVER_DESC,
 209         .date = DRIVER_DATE,
 210         .major = DRIVER_MAJOR,
 211         .minor = DRIVER_MINOR,
 212         .patchlevel = DRIVER_PATCHLEVEL,
 213
 214         .gem_free_object = ast_gem_free_object,
 215         .dumb_create = ast_dumb_create,
 216         .dumb_map_offset = ast_dumb_mmap_offset,
 217         .dumb_destroy = drm_gem_dumb_destroy,
 218
 219 };
 220
 221 static int __init ast_init(void)
 222 {
 223 #ifdef CONFIG_VGA_CONSOLE
 224         if (vgacon_text_force() && ast_modeset == -1)
 225                 return -EINVAL;
 226 #endif
 227
 228         if (ast_modeset == 0)
 229                 return -EINVAL;
 230         return drm_pci_init(&driver, &ast_pci_driver);
 231 }
 232 static void __exit ast_exit(void)
 233 {
 234         drm_pci_exit(&driver, &ast_pci_driver);
 235 }
 236
 237 module_init(ast_init);
 238 module_exit(ast_exit);
 239
 240 MODULE_AUTHOR(DRIVER_AUTHOR);
 241 MODULE_DESCRIPTION(DRIVER_DESC);
 242 MODULE_LICENSE("GPL and additional rights");
 243