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_atomic_helper.h> 34 #include <drm/drm_crtc_helper.h> 35 #include <drm/drm_drv.h> 36 #include <drm/drm_fb_helper.h> 37 #include <drm/drm_gem_vram_helper.h> 38 #include <drm/drm_probe_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 /* 48 * DRM driver 49 */ 50 51 DEFINE_DRM_GEM_FOPS(ast_fops); 52 53 static const struct drm_driver ast_driver = { 54 .driver_features = DRIVER_ATOMIC | 55 DRIVER_GEM | 56 DRIVER_MODESET, 57 58 .fops = &ast_fops, 59 .name = DRIVER_NAME, 60 .desc = DRIVER_DESC, 61 .date = DRIVER_DATE, 62 .major = DRIVER_MAJOR, 63 .minor = DRIVER_MINOR, 64 .patchlevel = DRIVER_PATCHLEVEL, 65 66 DRM_GEM_VRAM_DRIVER 67 }; 68 69 /* 70 * PCI driver 71 */ 72 73 #define PCI_VENDOR_ASPEED 0x1a03 74 75 #define AST_VGA_DEVICE(id, info) { \ 76 .class = PCI_BASE_CLASS_DISPLAY << 16, \ 77 .class_mask = 0xff0000, \ 78 .vendor = PCI_VENDOR_ASPEED, \ 79 .device = id, \ 80 .subvendor = PCI_ANY_ID, \ 81 .subdevice = PCI_ANY_ID, \ 82 .driver_data = (unsigned long) info } 83 84 static const struct pci_device_id ast_pciidlist[] = { 85 AST_VGA_DEVICE(PCI_CHIP_AST2000, NULL), 86 AST_VGA_DEVICE(PCI_CHIP_AST2100, NULL), 87 {0, 0, 0}, 88 }; 89 90 MODULE_DEVICE_TABLE(pci, ast_pciidlist); 91 92 static void ast_kick_out_firmware_fb(struct pci_dev *pdev) 93 { 94 struct apertures_struct *ap; 95 bool primary = false; 96 97 ap = alloc_apertures(1); 98 if (!ap) 99 return; 100 101 ap->ranges[0].base = pci_resource_start(pdev, 0); 102 ap->ranges[0].size = pci_resource_len(pdev, 0); 103 104 #ifdef CONFIG_X86 105 primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW; 106 #endif 107 drm_fb_helper_remove_conflicting_framebuffers(ap, "astdrmfb", primary); 108 kfree(ap); 109 } 110 111 static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 112 { 113 struct ast_private *ast; 114 struct drm_device *dev; 115 int ret; 116 117 ast_kick_out_firmware_fb(pdev); 118 119 ret = pcim_enable_device(pdev); 120 if (ret) 121 return ret; 122 123 ast = ast_device_create(&ast_driver, pdev, ent->driver_data); 124 if (IS_ERR(ast)) 125 return PTR_ERR(ast); 126 dev = &ast->base; 127 128 ret = drm_dev_register(dev, ent->driver_data); 129 if (ret) 130 return ret; 131 132 drm_fbdev_generic_setup(dev, 32); 133 134 return 0; 135 } 136 137 static void ast_pci_remove(struct pci_dev *pdev) 138 { 139 struct drm_device *dev = pci_get_drvdata(pdev); 140 141 drm_dev_unregister(dev); 142 drm_atomic_helper_shutdown(dev); 143 } 144 145 static int ast_drm_freeze(struct drm_device *dev) 146 { 147 int error; 148 149 error = drm_mode_config_helper_suspend(dev); 150 if (error) 151 return error; 152 pci_save_state(to_pci_dev(dev->dev)); 153 return 0; 154 } 155 156 static int ast_drm_thaw(struct drm_device *dev) 157 { 158 ast_post_gpu(dev); 159 160 return drm_mode_config_helper_resume(dev); 161 } 162 163 static int ast_drm_resume(struct drm_device *dev) 164 { 165 int ret; 166 167 if (pci_enable_device(to_pci_dev(dev->dev))) 168 return -EIO; 169 170 ret = ast_drm_thaw(dev); 171 if (ret) 172 return ret; 173 return 0; 174 } 175 176 static int ast_pm_suspend(struct device *dev) 177 { 178 struct pci_dev *pdev = to_pci_dev(dev); 179 struct drm_device *ddev = pci_get_drvdata(pdev); 180 int error; 181 182 error = ast_drm_freeze(ddev); 183 if (error) 184 return error; 185 186 pci_disable_device(pdev); 187 pci_set_power_state(pdev, PCI_D3hot); 188 return 0; 189 } 190 191 static int ast_pm_resume(struct device *dev) 192 { 193 struct pci_dev *pdev = to_pci_dev(dev); 194 struct drm_device *ddev = pci_get_drvdata(pdev); 195 return ast_drm_resume(ddev); 196 } 197 198 static int ast_pm_freeze(struct device *dev) 199 { 200 struct pci_dev *pdev = to_pci_dev(dev); 201 struct drm_device *ddev = pci_get_drvdata(pdev); 202 return ast_drm_freeze(ddev); 203 } 204 205 static int ast_pm_thaw(struct device *dev) 206 { 207 struct pci_dev *pdev = to_pci_dev(dev); 208 struct drm_device *ddev = pci_get_drvdata(pdev); 209 return ast_drm_thaw(ddev); 210 } 211 212 static int ast_pm_poweroff(struct device *dev) 213 { 214 struct pci_dev *pdev = to_pci_dev(dev); 215 struct drm_device *ddev = pci_get_drvdata(pdev); 216 217 return ast_drm_freeze(ddev); 218 } 219 220 static const struct dev_pm_ops ast_pm_ops = { 221 .suspend = ast_pm_suspend, 222 .resume = ast_pm_resume, 223 .freeze = ast_pm_freeze, 224 .thaw = ast_pm_thaw, 225 .poweroff = ast_pm_poweroff, 226 .restore = ast_pm_resume, 227 }; 228 229 static struct pci_driver ast_pci_driver = { 230 .name = DRIVER_NAME, 231 .id_table = ast_pciidlist, 232 .probe = ast_pci_probe, 233 .remove = ast_pci_remove, 234 .driver.pm = &ast_pm_ops, 235 }; 236 237 static int __init ast_init(void) 238 { 239 if (vgacon_text_force() && ast_modeset == -1) 240 return -EINVAL; 241 242 if (ast_modeset == 0) 243 return -EINVAL; 244 return pci_register_driver(&ast_pci_driver); 245 } 246 static void __exit ast_exit(void) 247 { 248 pci_unregister_driver(&ast_pci_driver); 249 } 250 251 module_init(ast_init); 252 module_exit(ast_exit); 253 254 MODULE_AUTHOR(DRIVER_AUTHOR); 255 MODULE_DESCRIPTION(DRIVER_DESC); 256 MODULE_LICENSE("GPL and additional rights"); 257