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 void ast_kick_out_firmware_fb(struct pci_dev *pdev) 64 { 65 struct apertures_struct *ap; 66 bool primary = false; 67 68 ap = alloc_apertures(1); 69 if (!ap) 70 return; 71 72 ap->ranges[0].base = pci_resource_start(pdev, 0); 73 ap->ranges[0].size = pci_resource_len(pdev, 0); 74 75 #ifdef CONFIG_X86 76 primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW; 77 #endif 78 drm_fb_helper_remove_conflicting_framebuffers(ap, "astdrmfb", primary); 79 kfree(ap); 80 } 81 82 static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 83 { 84 ast_kick_out_firmware_fb(pdev); 85 86 return drm_get_pci_dev(pdev, ent, &driver); 87 } 88 89 static void 90 ast_pci_remove(struct pci_dev *pdev) 91 { 92 struct drm_device *dev = pci_get_drvdata(pdev); 93 94 drm_put_dev(dev); 95 } 96 97 98 99 static int ast_drm_freeze(struct drm_device *dev) 100 { 101 drm_kms_helper_poll_disable(dev); 102 103 pci_save_state(dev->pdev); 104 105 console_lock(); 106 ast_fbdev_set_suspend(dev, 1); 107 console_unlock(); 108 return 0; 109 } 110 111 static int ast_drm_thaw(struct drm_device *dev) 112 { 113 int error = 0; 114 115 ast_post_gpu(dev); 116 117 drm_mode_config_reset(dev); 118 drm_helper_resume_force_mode(dev); 119 120 console_lock(); 121 ast_fbdev_set_suspend(dev, 0); 122 console_unlock(); 123 return error; 124 } 125 126 static int ast_drm_resume(struct drm_device *dev) 127 { 128 int ret; 129 130 if (pci_enable_device(dev->pdev)) 131 return -EIO; 132 133 ret = ast_drm_thaw(dev); 134 if (ret) 135 return ret; 136 137 drm_kms_helper_poll_enable(dev); 138 return 0; 139 } 140 141 static int ast_pm_suspend(struct device *dev) 142 { 143 struct pci_dev *pdev = to_pci_dev(dev); 144 struct drm_device *ddev = pci_get_drvdata(pdev); 145 int error; 146 147 error = ast_drm_freeze(ddev); 148 if (error) 149 return error; 150 151 pci_disable_device(pdev); 152 pci_set_power_state(pdev, PCI_D3hot); 153 return 0; 154 } 155 static int ast_pm_resume(struct device *dev) 156 { 157 struct pci_dev *pdev = to_pci_dev(dev); 158 struct drm_device *ddev = pci_get_drvdata(pdev); 159 return ast_drm_resume(ddev); 160 } 161 162 static int ast_pm_freeze(struct device *dev) 163 { 164 struct pci_dev *pdev = to_pci_dev(dev); 165 struct drm_device *ddev = pci_get_drvdata(pdev); 166 167 if (!ddev || !ddev->dev_private) 168 return -ENODEV; 169 return ast_drm_freeze(ddev); 170 171 } 172 173 static int ast_pm_thaw(struct device *dev) 174 { 175 struct pci_dev *pdev = to_pci_dev(dev); 176 struct drm_device *ddev = pci_get_drvdata(pdev); 177 return ast_drm_thaw(ddev); 178 } 179 180 static int ast_pm_poweroff(struct device *dev) 181 { 182 struct pci_dev *pdev = to_pci_dev(dev); 183 struct drm_device *ddev = pci_get_drvdata(pdev); 184 185 return ast_drm_freeze(ddev); 186 } 187 188 static const struct dev_pm_ops ast_pm_ops = { 189 .suspend = ast_pm_suspend, 190 .resume = ast_pm_resume, 191 .freeze = ast_pm_freeze, 192 .thaw = ast_pm_thaw, 193 .poweroff = ast_pm_poweroff, 194 .restore = ast_pm_resume, 195 }; 196 197 static struct pci_driver ast_pci_driver = { 198 .name = DRIVER_NAME, 199 .id_table = pciidlist, 200 .probe = ast_pci_probe, 201 .remove = ast_pci_remove, 202 .driver.pm = &ast_pm_ops, 203 }; 204 205 static const struct file_operations ast_fops = { 206 .owner = THIS_MODULE, 207 .open = drm_open, 208 .release = drm_release, 209 .unlocked_ioctl = drm_ioctl, 210 .mmap = ast_mmap, 211 .poll = drm_poll, 212 .compat_ioctl = drm_compat_ioctl, 213 .read = drm_read, 214 }; 215 216 static struct drm_driver driver = { 217 .driver_features = DRIVER_MODESET | DRIVER_GEM, 218 219 .load = ast_driver_load, 220 .unload = ast_driver_unload, 221 222 .fops = &ast_fops, 223 .name = DRIVER_NAME, 224 .desc = DRIVER_DESC, 225 .date = DRIVER_DATE, 226 .major = DRIVER_MAJOR, 227 .minor = DRIVER_MINOR, 228 .patchlevel = DRIVER_PATCHLEVEL, 229 230 .gem_free_object_unlocked = ast_gem_free_object, 231 .dumb_create = ast_dumb_create, 232 .dumb_map_offset = ast_dumb_mmap_offset, 233 234 }; 235 236 static int __init ast_init(void) 237 { 238 if (vgacon_text_force() && ast_modeset == -1) 239 return -EINVAL; 240 241 if (ast_modeset == 0) 242 return -EINVAL; 243 return pci_register_driver(&ast_pci_driver); 244 } 245 static void __exit ast_exit(void) 246 { 247 pci_unregister_driver(&ast_pci_driver); 248 } 249 250 module_init(ast_init); 251 module_exit(ast_exit); 252 253 MODULE_AUTHOR(DRIVER_AUTHOR); 254 MODULE_DESCRIPTION(DRIVER_DESC); 255 MODULE_LICENSE("GPL and additional rights"); 256 257