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 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 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_helper_resume_force_mode(dev); 98 99 console_lock(); 100 ast_fbdev_set_suspend(dev, 0); 101 console_unlock(); 102 return error; 103 } 104 105 static 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 } 119 120 static 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 } 134 static 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 } 140 141 static 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 } 151 152 static 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 } 158 159 static 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 } 166 167 static 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 }; 175 176 static 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 }; 183 184 static 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 }; 194 195 static 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 }; 214 215 static 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 } 224 static void __exit ast_exit(void) 225 { 226 pci_unregister_driver(&ast_pci_driver); 227 } 228 229 module_init(ast_init); 230 module_exit(ast_exit); 231 232 MODULE_AUTHOR(DRIVER_AUTHOR); 233 MODULE_DESCRIPTION(DRIVER_DESC); 234 MODULE_LICENSE("GPL and additional rights"); 235 236