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 {0, 0, 0}, 63 }; 64 65 MODULE_DEVICE_TABLE(pci, pciidlist); 66 67 static void ast_kick_out_firmware_fb(struct pci_dev *pdev) 68 { 69 struct apertures_struct *ap; 70 bool primary = false; 71 72 ap = alloc_apertures(1); 73 if (!ap) 74 return; 75 76 ap->ranges[0].base = pci_resource_start(pdev, 0); 77 ap->ranges[0].size = pci_resource_len(pdev, 0); 78 79 #ifdef CONFIG_X86 80 primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW; 81 #endif 82 drm_fb_helper_remove_conflicting_framebuffers(ap, "astdrmfb", primary); 83 kfree(ap); 84 } 85 86 static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 87 { 88 struct drm_device *dev; 89 int ret; 90 91 ast_kick_out_firmware_fb(pdev); 92 93 ret = pcim_enable_device(pdev); 94 if (ret) 95 return ret; 96 97 dev = drm_dev_alloc(&driver, &pdev->dev); 98 if (IS_ERR(dev)) 99 return PTR_ERR(dev); 100 101 dev->pdev = pdev; 102 pci_set_drvdata(pdev, dev); 103 104 ret = ast_driver_load(dev, ent->driver_data); 105 if (ret) 106 goto err_drm_dev_put; 107 108 ret = drm_dev_register(dev, ent->driver_data); 109 if (ret) 110 goto err_ast_driver_unload; 111 112 drm_fbdev_generic_setup(dev, 32); 113 114 return 0; 115 116 err_ast_driver_unload: 117 ast_driver_unload(dev); 118 err_drm_dev_put: 119 drm_dev_put(dev); 120 return ret; 121 122 } 123 124 static void 125 ast_pci_remove(struct pci_dev *pdev) 126 { 127 struct drm_device *dev = pci_get_drvdata(pdev); 128 129 drm_dev_unregister(dev); 130 ast_driver_unload(dev); 131 drm_dev_put(dev); 132 } 133 134 static int ast_drm_freeze(struct drm_device *dev) 135 { 136 int error; 137 138 error = drm_mode_config_helper_suspend(dev); 139 if (error) 140 return error; 141 pci_save_state(dev->pdev); 142 return 0; 143 } 144 145 static int ast_drm_thaw(struct drm_device *dev) 146 { 147 ast_post_gpu(dev); 148 149 return drm_mode_config_helper_resume(dev); 150 } 151 152 static int ast_drm_resume(struct drm_device *dev) 153 { 154 int ret; 155 156 if (pci_enable_device(dev->pdev)) 157 return -EIO; 158 159 ret = ast_drm_thaw(dev); 160 if (ret) 161 return ret; 162 return 0; 163 } 164 165 static int ast_pm_suspend(struct device *dev) 166 { 167 struct pci_dev *pdev = to_pci_dev(dev); 168 struct drm_device *ddev = pci_get_drvdata(pdev); 169 int error; 170 171 error = ast_drm_freeze(ddev); 172 if (error) 173 return error; 174 175 pci_disable_device(pdev); 176 pci_set_power_state(pdev, PCI_D3hot); 177 return 0; 178 } 179 180 static int ast_pm_resume(struct device *dev) 181 { 182 struct pci_dev *pdev = to_pci_dev(dev); 183 struct drm_device *ddev = pci_get_drvdata(pdev); 184 return ast_drm_resume(ddev); 185 } 186 187 static int ast_pm_freeze(struct device *dev) 188 { 189 struct pci_dev *pdev = to_pci_dev(dev); 190 struct drm_device *ddev = pci_get_drvdata(pdev); 191 return ast_drm_freeze(ddev); 192 } 193 194 static int ast_pm_thaw(struct device *dev) 195 { 196 struct pci_dev *pdev = to_pci_dev(dev); 197 struct drm_device *ddev = pci_get_drvdata(pdev); 198 return ast_drm_thaw(ddev); 199 } 200 201 static int ast_pm_poweroff(struct device *dev) 202 { 203 struct pci_dev *pdev = to_pci_dev(dev); 204 struct drm_device *ddev = pci_get_drvdata(pdev); 205 206 return ast_drm_freeze(ddev); 207 } 208 209 static const struct dev_pm_ops ast_pm_ops = { 210 .suspend = ast_pm_suspend, 211 .resume = ast_pm_resume, 212 .freeze = ast_pm_freeze, 213 .thaw = ast_pm_thaw, 214 .poweroff = ast_pm_poweroff, 215 .restore = ast_pm_resume, 216 }; 217 218 static struct pci_driver ast_pci_driver = { 219 .name = DRIVER_NAME, 220 .id_table = pciidlist, 221 .probe = ast_pci_probe, 222 .remove = ast_pci_remove, 223 .driver.pm = &ast_pm_ops, 224 }; 225 226 DEFINE_DRM_GEM_FOPS(ast_fops); 227 228 static struct drm_driver driver = { 229 .driver_features = DRIVER_ATOMIC | 230 DRIVER_GEM | 231 DRIVER_MODESET, 232 233 .fops = &ast_fops, 234 .name = DRIVER_NAME, 235 .desc = DRIVER_DESC, 236 .date = DRIVER_DATE, 237 .major = DRIVER_MAJOR, 238 .minor = DRIVER_MINOR, 239 .patchlevel = DRIVER_PATCHLEVEL, 240 241 DRM_GEM_VRAM_DRIVER 242 }; 243 244 static int __init ast_init(void) 245 { 246 if (vgacon_text_force() && ast_modeset == -1) 247 return -EINVAL; 248 249 if (ast_modeset == 0) 250 return -EINVAL; 251 return pci_register_driver(&ast_pci_driver); 252 } 253 static void __exit ast_exit(void) 254 { 255 pci_unregister_driver(&ast_pci_driver); 256 } 257 258 module_init(ast_init); 259 module_exit(ast_exit); 260 261 MODULE_AUTHOR(DRIVER_AUTHOR); 262 MODULE_DESCRIPTION(DRIVER_DESC); 263 MODULE_LICENSE("GPL and additional rights"); 264 265