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 "drmP.h"
  32 #include "drm.h"
  33 #include "drm_crtc_helper.h"
  34
  35 #include "ast_drv.h"
  36
  37 int ast_modeset = -1;
  38
  39 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
  40 module_param_named(modeset, ast_modeset, int, 0400);
  41
  42 #define PCI_VENDOR_ASPEED 0x1a03
  43
  44 static struct drm_driver driver;
  45
  46 #define AST_VGA_DEVICE(id, info) {              \
  47         .class = PCI_BASE_CLASS_DISPLAY << 16,  \
  48         .class_mask = 0xff0000,                 \
  49         .vendor = PCI_VENDOR_ASPEED,                    \
  50         .device = id,                           \
  51         .subvendor = PCI_ANY_ID,                \
  52         .subdevice = PCI_ANY_ID,                \
  53         .driver_data = (unsigned long) info }
  54
  55 static DEFINE_PCI_DEVICE_TABLE(pciidlist) = {
  56         AST_VGA_DEVICE(PCI_CHIP_AST2000, NULL),
  57         AST_VGA_DEVICE(PCI_CHIP_AST2100, NULL),
  58         /*      AST_VGA_DEVICE(PCI_CHIP_AST1180, NULL), - don't bind to 1180 for now */
  59         {0, 0, 0},
  60 };
  61
  62 MODULE_DEVICE_TABLE(pci, pciidlist);
  63
  64 static int __devinit
  65 ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  66 {
  67         return drm_get_pci_dev(pdev, ent, &driver);
  68 }
  69
  70 static void
  71 ast_pci_remove(struct pci_dev *pdev)
  72 {
  73         struct drm_device *dev = pci_get_drvdata(pdev);
  74
  75         drm_put_dev(dev);
  76 }
  77
  78
  79
  80 static int ast_drm_freeze(struct drm_device *dev)
  81 {
  82         drm_kms_helper_poll_disable(dev);
  83
  84         pci_save_state(dev->pdev);
  85
  86         console_lock();
  87         ast_fbdev_set_suspend(dev, 1);
  88         console_unlock();
  89         return 0;
  90 }
  91
  92 static int ast_drm_thaw(struct drm_device *dev)
  93 {
  94         int error = 0;
  95
  96         ast_post_gpu(dev);
  97
  98         drm_mode_config_reset(dev);
  99         mutex_lock(&dev->mode_config.mutex);
 100         drm_helper_resume_force_mode(dev);
 101         mutex_unlock(&dev->mode_config.mutex);
 102
 103         console_lock();
 104         ast_fbdev_set_suspend(dev, 0);
 105         console_unlock();
 106         return error;
 107 }
 108
 109 static int ast_drm_resume(struct drm_device *dev)
 110 {
 111         int ret;
 112
 113         if (pci_enable_device(dev->pdev))
 114                 return -EIO;
 115
 116         ret = ast_drm_thaw(dev);
 117         if (ret)
 118                 return ret;
 119
 120         drm_kms_helper_poll_enable(dev);
 121         return 0;
 122 }
 123
 124 static int ast_pm_suspend(struct device *dev)
 125 {
 126         struct pci_dev *pdev = to_pci_dev(dev);
 127         struct drm_device *ddev = pci_get_drvdata(pdev);
 128         int error;
 129
 130         error = ast_drm_freeze(ddev);
 131         if (error)
 132                 return error;
 133
 134         pci_disable_device(pdev);
 135         pci_set_power_state(pdev, PCI_D3hot);
 136         return 0;
 137 }
 138 static int ast_pm_resume(struct device *dev)
 139 {
 140         struct pci_dev *pdev = to_pci_dev(dev);
 141         struct drm_device *ddev = pci_get_drvdata(pdev);
 142         return ast_drm_resume(ddev);
 143 }
 144
 145 static int ast_pm_freeze(struct device *dev)
 146 {
 147         struct pci_dev *pdev = to_pci_dev(dev);
 148         struct drm_device *ddev = pci_get_drvdata(pdev);
 149
 150         if (!ddev || !ddev->dev_private)
 151                 return -ENODEV;
 152         return ast_drm_freeze(ddev);
 153
 154 }
 155
 156 static int ast_pm_thaw(struct device *dev)
 157 {
 158         struct pci_dev *pdev = to_pci_dev(dev);
 159         struct drm_device *ddev = pci_get_drvdata(pdev);
 160         return ast_drm_thaw(ddev);
 161 }
 162
 163 static int ast_pm_poweroff(struct device *dev)
 164 {
 165         struct pci_dev *pdev = to_pci_dev(dev);
 166         struct drm_device *ddev = pci_get_drvdata(pdev);
 167
 168         return ast_drm_freeze(ddev);
 169 }
 170
 171 static const struct dev_pm_ops ast_pm_ops = {
 172         .suspend = ast_pm_suspend,
 173         .resume = ast_pm_resume,
 174         .freeze = ast_pm_freeze,
 175         .thaw = ast_pm_thaw,
 176         .poweroff = ast_pm_poweroff,
 177         .restore = ast_pm_resume,
 178 };
 179
 180 static struct pci_driver ast_pci_driver = {
 181         .name = DRIVER_NAME,
 182         .id_table = pciidlist,
 183         .probe = ast_pci_probe,
 184         .remove = ast_pci_remove,
 185         .driver.pm = &ast_pm_ops,
 186 };
 187
 188 static const struct file_operations ast_fops = {
 189         .owner = THIS_MODULE,
 190         .open = drm_open,
 191         .release = drm_release,
 192         .unlocked_ioctl = drm_ioctl,
 193         .mmap = ast_mmap,
 194         .poll = drm_poll,
 195         .fasync = drm_fasync,
 196 #ifdef CONFIG_COMPAT
 197         .compat_ioctl = drm_compat_ioctl,
 198 #endif
 199         .read = drm_read,
 200 };
 201
 202 static struct drm_driver driver = {
 203         .driver_features = DRIVER_USE_MTRR | DRIVER_MODESET | DRIVER_GEM,
 204         .dev_priv_size = 0,
 205
 206         .load = ast_driver_load,
 207         .unload = ast_driver_unload,
 208
 209         .fops = &ast_fops,
 210         .name = DRIVER_NAME,
 211         .desc = DRIVER_DESC,
 212         .date = DRIVER_DATE,
 213         .major = DRIVER_MAJOR,
 214         .minor = DRIVER_MINOR,
 215         .patchlevel = DRIVER_PATCHLEVEL,
 216
 217         .gem_init_object = ast_gem_init_object,
 218         .gem_free_object = ast_gem_free_object,
 219         .dumb_create = ast_dumb_create,
 220         .dumb_map_offset = ast_dumb_mmap_offset,
 221         .dumb_destroy = ast_dumb_destroy,
 222
 223 };
 224
 225 static int __init ast_init(void)
 226 {
 227 #ifdef CONFIG_VGA_CONSOLE
 228         if (vgacon_text_force() && ast_modeset == -1)
 229                 return -EINVAL;
 230 #endif
 231
 232         if (ast_modeset == 0)
 233                 return -EINVAL;
 234         return drm_pci_init(&driver, &ast_pci_driver);
 235 }
 236 static void __exit ast_exit(void)
 237 {
 238         drm_pci_exit(&driver, &ast_pci_driver);
 239 }
 240
 241 module_init(ast_init);
 242 module_exit(ast_exit);
 243
 244 MODULE_AUTHOR(DRIVER_AUTHOR);
 245 MODULE_DESCRIPTION(DRIVER_DESC);
 246 MODULE_LICENSE("GPL and additional rights");
 247