drivers/gpu/drm/ast/ast

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This source file includes following definitions.
ast_kick_out_firmware_fb
ast_pci_probe
ast_pci_remove
ast_drm_freeze
ast_drm_thaw
ast_drm_resume
ast_pm_suspend
ast_pm_resume
ast_pm_freeze
ast_pm_thaw
ast_pm_poweroff
ast_init
ast_exit
   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 
  29 #include <linux/console.h>
  30 #include <linux/module.h>
  31 #include <linux/pci.h>
  32 
  33 #include <drm/drm_crtc_helper.h>
  34 #include <drm/drm_drv.h>
  35 #include <drm/drm_gem_vram_helper.h>
  36 #include <drm/drm_pci.h>
  37 #include <drm/drm_probe_helper.h>
  38 #include <drm/drm_vram_mm_helper.h>
  39 
  40 #include "ast_drv.h"
  41 
  42 int ast_modeset = -1;
  43 
  44 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
  45 module_param_named(modeset, ast_modeset, int, 0400);
  46 
  47 #define PCI_VENDOR_ASPEED 0x1a03
  48 
  49 static struct drm_driver driver;
  50 
  51 #define AST_VGA_DEVICE(id, info) {              \
  52         .class = PCI_BASE_CLASS_DISPLAY << 16,  \
  53         .class_mask = 0xff0000,                 \
  54         .vendor = PCI_VENDOR_ASPEED,                    \
  55         .device = id,                           \
  56         .subvendor = PCI_ANY_ID,                \
  57         .subdevice = PCI_ANY_ID,                \
  58         .driver_data = (unsigned long) info }
  59 
  60 static const struct pci_device_id pciidlist[] = {
  61         AST_VGA_DEVICE(PCI_CHIP_AST2000, NULL),
  62         AST_VGA_DEVICE(PCI_CHIP_AST2100, NULL),
  63         /*      AST_VGA_DEVICE(PCI_CHIP_AST1180, NULL), - don't bind to 1180 for now */
  64         {0, 0, 0},
  65 };
  66 
  67 MODULE_DEVICE_TABLE(pci, pciidlist);
  68 
  69 static void ast_kick_out_firmware_fb(struct pci_dev *pdev)
  70 {
  71         struct apertures_struct *ap;
  72         bool primary = false;
  73 
  74         ap = alloc_apertures(1);
  75         if (!ap)
  76                 return;
  77 
  78         ap->ranges[0].base = pci_resource_start(pdev, 0);
  79         ap->ranges[0].size = pci_resource_len(pdev, 0);
  80 
  81 #ifdef CONFIG_X86
  82         primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
  83 #endif
  84         drm_fb_helper_remove_conflicting_framebuffers(ap, "astdrmfb", primary);
  85         kfree(ap);
  86 }
  87 
  88 static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  89 {
  90         ast_kick_out_firmware_fb(pdev);
  91 
  92         return drm_get_pci_dev(pdev, ent, &driver);
  93 }
  94 
  95 static void
  96 ast_pci_remove(struct pci_dev *pdev)
  97 {
  98         struct drm_device *dev = pci_get_drvdata(pdev);
  99 
 100         drm_put_dev(dev);
 101 }
 102 
 103 
 104 
 105 static int ast_drm_freeze(struct drm_device *dev)
 106 {
 107         drm_kms_helper_poll_disable(dev);
 108         pci_save_state(dev->pdev);
 109         drm_fb_helper_set_suspend_unlocked(dev->fb_helper, true);
 110 
 111         return 0;
 112 }
 113 
 114 static int ast_drm_thaw(struct drm_device *dev)
 115 {
 116         ast_post_gpu(dev);
 117 
 118         drm_mode_config_reset(dev);
 119         drm_helper_resume_force_mode(dev);
 120         drm_fb_helper_set_suspend_unlocked(dev->fb_helper, false);
 121 
 122         return 0;
 123 }
 124 
 125 static int ast_drm_resume(struct drm_device *dev)
 126 {
 127         int ret;
 128 
 129         if (pci_enable_device(dev->pdev))
 130                 return -EIO;
 131 
 132         ret = ast_drm_thaw(dev);
 133         if (ret)
 134                 return ret;
 135 
 136         drm_kms_helper_poll_enable(dev);
 137         return 0;
 138 }
 139 
 140 static int ast_pm_suspend(struct device *dev)
 141 {
 142         struct pci_dev *pdev = to_pci_dev(dev);
 143         struct drm_device *ddev = pci_get_drvdata(pdev);
 144         int error;
 145 
 146         error = ast_drm_freeze(ddev);
 147         if (error)
 148                 return error;
 149 
 150         pci_disable_device(pdev);
 151         pci_set_power_state(pdev, PCI_D3hot);
 152         return 0;
 153 }
 154 static int ast_pm_resume(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_resume(ddev);
 159 }
 160 
 161 static int ast_pm_freeze(struct device *dev)
 162 {
 163         struct pci_dev *pdev = to_pci_dev(dev);
 164         struct drm_device *ddev = pci_get_drvdata(pdev);
 165 
 166         if (!ddev || !ddev->dev_private)
 167                 return -ENODEV;
 168         return ast_drm_freeze(ddev);
 169 
 170 }
 171 
 172 static int ast_pm_thaw(struct device *dev)
 173 {
 174         struct pci_dev *pdev = to_pci_dev(dev);
 175         struct drm_device *ddev = pci_get_drvdata(pdev);
 176         return ast_drm_thaw(ddev);
 177 }
 178 
 179 static int ast_pm_poweroff(struct device *dev)
 180 {
 181         struct pci_dev *pdev = to_pci_dev(dev);
 182         struct drm_device *ddev = pci_get_drvdata(pdev);
 183 
 184         return ast_drm_freeze(ddev);
 185 }
 186 
 187 static const struct dev_pm_ops ast_pm_ops = {
 188         .suspend = ast_pm_suspend,
 189         .resume = ast_pm_resume,
 190         .freeze = ast_pm_freeze,
 191         .thaw = ast_pm_thaw,
 192         .poweroff = ast_pm_poweroff,
 193         .restore = ast_pm_resume,
 194 };
 195 
 196 static struct pci_driver ast_pci_driver = {
 197         .name = DRIVER_NAME,
 198         .id_table = pciidlist,
 199         .probe = ast_pci_probe,
 200         .remove = ast_pci_remove,
 201         .driver.pm = &ast_pm_ops,
 202 };
 203 
 204 static const struct file_operations ast_fops = {
 205         .owner = THIS_MODULE,
 206         DRM_VRAM_MM_FILE_OPERATIONS
 207 };
 208 
 209 static struct drm_driver driver = {
 210         .driver_features = DRIVER_MODESET | DRIVER_GEM,
 211 
 212         .load = ast_driver_load,
 213         .unload = ast_driver_unload,
 214 
 215         .fops = &ast_fops,
 216         .name = DRIVER_NAME,
 217         .desc = DRIVER_DESC,
 218         .date = DRIVER_DATE,
 219         .major = DRIVER_MAJOR,
 220         .minor = DRIVER_MINOR,
 221         .patchlevel = DRIVER_PATCHLEVEL,
 222 
 223         DRM_GEM_VRAM_DRIVER
 224 };
 225 
 226 static int __init ast_init(void)
 227 {
 228         if (vgacon_text_force() && ast_modeset == -1)
 229                 return -EINVAL;
 230 
 231         if (ast_modeset == 0)
 232                 return -EINVAL;
 233         return pci_register_driver(&ast_pci_driver);
 234 }
 235 static void __exit ast_exit(void)
 236 {
 237         pci_unregister_driver(&ast_pci_driver);
 238 }
 239 
 240 module_init(ast_init);
 241 module_exit(ast_exit);
 242 
 243 MODULE_AUTHOR(DRIVER_AUTHOR);
 244 MODULE_DESCRIPTION(DRIVER_DESC);
 245 MODULE_LICENSE("GPL and additional rights");
 246
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/gpu/drm/ast/ast_drv.c

DEFINITIONS
