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_fb_helper.h> 36 #include <drm/drm_gem_vram_helper.h> 37 #include <drm/drm_probe_helper.h> 38 39 #include "ast_drv.h" 40 41 int ast_modeset = -1; 42 43 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting"); 44 module_param_named(modeset, ast_modeset, int, 0400); 45 46 #define PCI_VENDOR_ASPEED 0x1a03 47 48 static struct drm_driver driver; 49 50 #define AST_VGA_DEVICE(id, info) { \ 51 .class = PCI_BASE_CLASS_DISPLAY << 16, \ 52 .class_mask = 0xff0000, \ 53 .vendor = PCI_VENDOR_ASPEED, \ 54 .device = id, \ 55 .subvendor = PCI_ANY_ID, \ 56 .subdevice = PCI_ANY_ID, \ 57 .driver_data = (unsigned long) info } 58 59 static const struct pci_device_id pciidlist[] = { 60 AST_VGA_DEVICE(PCI_CHIP_AST2000, NULL), 61 AST_VGA_DEVICE(PCI_CHIP_AST2100, NULL), 62 /* AST_VGA_DEVICE(PCI_CHIP_AST1180, NULL), - don't bind to 1180 for now */ 63 {0, 0, 0}, 64 }; 65 66 MODULE_DEVICE_TABLE(pci, pciidlist); 67 68 static void ast_kick_out_firmware_fb(struct pci_dev *pdev) 69 { 70 struct apertures_struct *ap; 71 bool primary = false; 72 73 ap = alloc_apertures(1); 74 if (!ap) 75 return; 76 77 ap->ranges[0].base = pci_resource_start(pdev, 0); 78 ap->ranges[0].size = pci_resource_len(pdev, 0); 79 80 #ifdef CONFIG_X86 81 primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW; 82 #endif 83 drm_fb_helper_remove_conflicting_framebuffers(ap, "astdrmfb", primary); 84 kfree(ap); 85 } 86 87 static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 88 { 89 struct drm_device *dev; 90 int ret; 91 92 ast_kick_out_firmware_fb(pdev); 93 94 ret = pci_enable_device(pdev); 95 if (ret) 96 return ret; 97 98 dev = drm_dev_alloc(&driver, &pdev->dev); 99 if (IS_ERR(dev)) { 100 ret = PTR_ERR(dev); 101 goto err_pci_disable_device; 102 } 103 104 dev->pdev = pdev; 105 pci_set_drvdata(pdev, dev); 106 107 ret = ast_driver_load(dev, ent->driver_data); 108 if (ret) 109 goto err_drm_dev_put; 110 111 ret = drm_dev_register(dev, ent->driver_data); 112 if (ret) 113 goto err_ast_driver_unload; 114 115 drm_fbdev_generic_setup(dev, 32); 116 117 return 0; 118 119 err_ast_driver_unload: 120 ast_driver_unload(dev); 121 err_drm_dev_put: 122 drm_dev_put(dev); 123 err_pci_disable_device: 124 pci_disable_device(pdev); 125 return ret; 126 127 } 128 129 static void 130 ast_pci_remove(struct pci_dev *pdev) 131 { 132 struct drm_device *dev = pci_get_drvdata(pdev); 133 134 drm_dev_unregister(dev); 135 ast_driver_unload(dev); 136 drm_dev_put(dev); 137 } 138 139 static int ast_drm_freeze(struct drm_device *dev) 140 { 141 int error; 142 143 error = drm_mode_config_helper_suspend(dev); 144 if (error) 145 return error; 146 pci_save_state(dev->pdev); 147 return 0; 148 } 149 150 static int ast_drm_thaw(struct drm_device *dev) 151 { 152 ast_post_gpu(dev); 153 154 return drm_mode_config_helper_resume(dev); 155 } 156 157 static int ast_drm_resume(struct drm_device *dev) 158 { 159 int ret; 160 161 if (pci_enable_device(dev->pdev)) 162 return -EIO; 163 164 ret = ast_drm_thaw(dev); 165 if (ret) 166 return ret; 167 return 0; 168 } 169 170 static int ast_pm_suspend(struct device *dev) 171 { 172 struct pci_dev *pdev = to_pci_dev(dev); 173 struct drm_device *ddev = pci_get_drvdata(pdev); 174 int error; 175 176 error = ast_drm_freeze(ddev); 177 if (error) 178 return error; 179 180 pci_disable_device(pdev); 181 pci_set_power_state(pdev, PCI_D3hot); 182 return 0; 183 } 184 185 static int ast_pm_resume(struct device *dev) 186 { 187 struct pci_dev *pdev = to_pci_dev(dev); 188 struct drm_device *ddev = pci_get_drvdata(pdev); 189 return ast_drm_resume(ddev); 190 } 191 192 static int ast_pm_freeze(struct device *dev) 193 { 194 struct pci_dev *pdev = to_pci_dev(dev); 195 struct drm_device *ddev = pci_get_drvdata(pdev); 196 197 if (!ddev || !ddev->dev_private) 198 return -ENODEV; 199 return ast_drm_freeze(ddev); 200 } 201 202 static int ast_pm_thaw(struct device *dev) 203 { 204 struct pci_dev *pdev = to_pci_dev(dev); 205 struct drm_device *ddev = pci_get_drvdata(pdev); 206 return ast_drm_thaw(ddev); 207 } 208 209 static int ast_pm_poweroff(struct device *dev) 210 { 211 struct pci_dev *pdev = to_pci_dev(dev); 212 struct drm_device *ddev = pci_get_drvdata(pdev); 213 214 return ast_drm_freeze(ddev); 215 } 216 217 static const struct dev_pm_ops ast_pm_ops = { 218 .suspend = ast_pm_suspend, 219 .resume = ast_pm_resume, 220 .freeze = ast_pm_freeze, 221 .thaw = ast_pm_thaw, 222 .poweroff = ast_pm_poweroff, 223 .restore = ast_pm_resume, 224 }; 225 226 static struct pci_driver ast_pci_driver = { 227 .name = DRIVER_NAME, 228 .id_table = pciidlist, 229 .probe = ast_pci_probe, 230 .remove = ast_pci_remove, 231 .driver.pm = &ast_pm_ops, 232 }; 233 234 DEFINE_DRM_GEM_FOPS(ast_fops); 235 236 static struct drm_driver driver = { 237 .driver_features = DRIVER_ATOMIC | 238 DRIVER_GEM | 239 DRIVER_MODESET, 240 241 .fops = &ast_fops, 242 .name = DRIVER_NAME, 243 .desc = DRIVER_DESC, 244 .date = DRIVER_DATE, 245 .major = DRIVER_MAJOR, 246 .minor = DRIVER_MINOR, 247 .patchlevel = DRIVER_PATCHLEVEL, 248 249 DRM_GEM_VRAM_DRIVER 250 }; 251 252 static int __init ast_init(void) 253 { 254 if (vgacon_text_force() && ast_modeset == -1) 255 return -EINVAL; 256 257 if (ast_modeset == 0) 258 return -EINVAL; 259 return pci_register_driver(&ast_pci_driver); 260 } 261 static void __exit ast_exit(void) 262 { 263 pci_unregister_driver(&ast_pci_driver); 264 } 265 266 module_init(ast_init); 267 module_exit(ast_exit); 268 269 MODULE_AUTHOR(DRIVER_AUTHOR); 270 MODULE_DESCRIPTION(DRIVER_DESC); 271 MODULE_LICENSE("GPL and additional rights"); 272 273