linux/drivers/gpu/drm/ast/ast_drv.c
<<
>>
Prefs
   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
  36int ast_modeset = -1;
  37
  38MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
  39module_param_named(modeset, ast_modeset, int, 0400);
  40
  41#define PCI_VENDOR_ASPEED 0x1a03
  42
  43static 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
  54static const struct pci_device_id 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
  61MODULE_DEVICE_TABLE(pci, pciidlist);
  62
  63static 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
  68static void
  69ast_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
  78static 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
  90static 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_helper_resume_force_mode(dev);
  98
  99        console_lock();
 100        ast_fbdev_set_suspend(dev, 0);
 101        console_unlock();
 102        return error;
 103}
 104
 105static int ast_drm_resume(struct drm_device *dev)
 106{
 107        int ret;
 108
 109        if (pci_enable_device(dev->pdev))
 110                return -EIO;
 111
 112        ret = ast_drm_thaw(dev);
 113        if (ret)
 114                return ret;
 115
 116        drm_kms_helper_poll_enable(dev);
 117        return 0;
 118}
 119
 120static int ast_pm_suspend(struct device *dev)
 121{
 122        struct pci_dev *pdev = to_pci_dev(dev);
 123        struct drm_device *ddev = pci_get_drvdata(pdev);
 124        int error;
 125
 126        error = ast_drm_freeze(ddev);
 127        if (error)
 128                return error;
 129
 130        pci_disable_device(pdev);
 131        pci_set_power_state(pdev, PCI_D3hot);
 132        return 0;
 133}
 134static int ast_pm_resume(struct device *dev)
 135{
 136        struct pci_dev *pdev = to_pci_dev(dev);
 137        struct drm_device *ddev = pci_get_drvdata(pdev);
 138        return ast_drm_resume(ddev);
 139}
 140
 141static int ast_pm_freeze(struct device *dev)
 142{
 143        struct pci_dev *pdev = to_pci_dev(dev);
 144        struct drm_device *ddev = pci_get_drvdata(pdev);
 145
 146        if (!ddev || !ddev->dev_private)
 147                return -ENODEV;
 148        return ast_drm_freeze(ddev);
 149
 150}
 151
 152static int ast_pm_thaw(struct device *dev)
 153{
 154        struct pci_dev *pdev = to_pci_dev(dev);
 155        struct drm_device *ddev = pci_get_drvdata(pdev);
 156        return ast_drm_thaw(ddev);
 157}
 158
 159static int ast_pm_poweroff(struct device *dev)
 160{
 161        struct pci_dev *pdev = to_pci_dev(dev);
 162        struct drm_device *ddev = pci_get_drvdata(pdev);
 163
 164        return ast_drm_freeze(ddev);
 165}
 166
 167static const struct dev_pm_ops ast_pm_ops = {
 168        .suspend = ast_pm_suspend,
 169        .resume = ast_pm_resume,
 170        .freeze = ast_pm_freeze,
 171        .thaw = ast_pm_thaw,
 172        .poweroff = ast_pm_poweroff,
 173        .restore = ast_pm_resume,
 174};
 175
 176static struct pci_driver ast_pci_driver = {
 177        .name = DRIVER_NAME,
 178        .id_table = pciidlist,
 179        .probe = ast_pci_probe,
 180        .remove = ast_pci_remove,
 181        .driver.pm = &ast_pm_ops,
 182};
 183
 184static const struct file_operations ast_fops = {
 185        .owner = THIS_MODULE,
 186        .open = drm_open,
 187        .release = drm_release,
 188        .unlocked_ioctl = drm_ioctl,
 189        .mmap = ast_mmap,
 190        .poll = drm_poll,
 191        .compat_ioctl = drm_compat_ioctl,
 192        .read = drm_read,
 193};
 194
 195static struct drm_driver driver = {
 196        .driver_features = DRIVER_MODESET | DRIVER_GEM,
 197
 198        .load = ast_driver_load,
 199        .unload = ast_driver_unload,
 200
 201        .fops = &ast_fops,
 202        .name = DRIVER_NAME,
 203        .desc = DRIVER_DESC,
 204        .date = DRIVER_DATE,
 205        .major = DRIVER_MAJOR,
 206        .minor = DRIVER_MINOR,
 207        .patchlevel = DRIVER_PATCHLEVEL,
 208
 209        .gem_free_object_unlocked = ast_gem_free_object,
 210        .dumb_create = ast_dumb_create,
 211        .dumb_map_offset = ast_dumb_mmap_offset,
 212
 213};
 214
 215static int __init ast_init(void)
 216{
 217        if (vgacon_text_force() && ast_modeset == -1)
 218                return -EINVAL;
 219
 220        if (ast_modeset == 0)
 221                return -EINVAL;
 222        return pci_register_driver(&ast_pci_driver);
 223}
 224static void __exit ast_exit(void)
 225{
 226        pci_unregister_driver(&ast_pci_driver);
 227}
 228
 229module_init(ast_init);
 230module_exit(ast_exit);
 231
 232MODULE_AUTHOR(DRIVER_AUTHOR);
 233MODULE_DESCRIPTION(DRIVER_DESC);
 234MODULE_LICENSE("GPL and additional rights");
 235
 236