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 DEFINE_PCI_DEVICE_TABLE(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 mutex_lock(&dev->mode_config.mutex); 98 drm_helper_resume_force_mode(dev); 99 mutex_unlock(&dev->mode_config.mutex); 100 101 console_lock(); 102 ast_fbdev_set_suspend(dev, 0); 103 console_unlock(); 104 return error; 105 } 106 107 static int ast_drm_resume(struct drm_device *dev) 108 { 109 int ret; 110 111 if (pci_enable_device(dev->pdev)) 112 return -EIO; 113 114 ret = ast_drm_thaw(dev); 115 if (ret) 116 return ret; 117 118 drm_kms_helper_poll_enable(dev); 119 return 0; 120 } 121 122 static int ast_pm_suspend(struct device *dev) 123 { 124 struct pci_dev *pdev = to_pci_dev(dev); 125 struct drm_device *ddev = pci_get_drvdata(pdev); 126 int error; 127 128 error = ast_drm_freeze(ddev); 129 if (error) 130 return error; 131 132 pci_disable_device(pdev); 133 pci_set_power_state(pdev, PCI_D3hot); 134 return 0; 135 } 136 static int ast_pm_resume(struct device *dev) 137 { 138 struct pci_dev *pdev = to_pci_dev(dev); 139 struct drm_device *ddev = pci_get_drvdata(pdev); 140 return ast_drm_resume(ddev); 141 } 142 143 static int ast_pm_freeze(struct device *dev) 144 { 145 struct pci_dev *pdev = to_pci_dev(dev); 146 struct drm_device *ddev = pci_get_drvdata(pdev); 147 148 if (!ddev || !ddev->dev_private) 149 return -ENODEV; 150 return ast_drm_freeze(ddev); 151 152 } 153 154 static int ast_pm_thaw(struct device *dev) 155 { 156 struct pci_dev *pdev = to_pci_dev(dev); 157 struct drm_device *ddev = pci_get_drvdata(pdev); 158 return ast_drm_thaw(ddev); 159 } 160 161 static int ast_pm_poweroff(struct device *dev) 162 { 163 struct pci_dev *pdev = to_pci_dev(dev); 164 struct drm_device *ddev = pci_get_drvdata(pdev); 165 166 return ast_drm_freeze(ddev); 167 } 168 169 static const struct dev_pm_ops ast_pm_ops = { 170 .suspend = ast_pm_suspend, 171 .resume = ast_pm_resume, 172 .freeze = ast_pm_freeze, 173 .thaw = ast_pm_thaw, 174 .poweroff = ast_pm_poweroff, 175 .restore = ast_pm_resume, 176 }; 177 178 static struct pci_driver ast_pci_driver = { 179 .name = DRIVER_NAME, 180 .id_table = pciidlist, 181 .probe = ast_pci_probe, 182 .remove = ast_pci_remove, 183 .driver.pm = &ast_pm_ops, 184 }; 185 186 static const struct file_operations ast_fops = { 187 .owner = THIS_MODULE, 188 .open = drm_open, 189 .release = drm_release, 190 .unlocked_ioctl = drm_ioctl, 191 .mmap = ast_mmap, 192 .poll = drm_poll, 193 .fasync = drm_fasync, 194 #ifdef CONFIG_COMPAT 195 .compat_ioctl = drm_compat_ioctl, 196 #endif 197 .read = drm_read, 198 }; 199 200 static struct drm_driver driver = { 201 .driver_features = DRIVER_USE_MTRR | DRIVER_MODESET | DRIVER_GEM, 202 .dev_priv_size = 0, 203 204 .load = ast_driver_load, 205 .unload = ast_driver_unload, 206 207 .fops = &ast_fops, 208 .name = DRIVER_NAME, 209 .desc = DRIVER_DESC, 210 .date = DRIVER_DATE, 211 .major = DRIVER_MAJOR, 212 .minor = DRIVER_MINOR, 213 .patchlevel = DRIVER_PATCHLEVEL, 214 215 .gem_init_object = ast_gem_init_object, 216 .gem_free_object = ast_gem_free_object, 217 .dumb_create = ast_dumb_create, 218 .dumb_map_offset = ast_dumb_mmap_offset, 219 .dumb_destroy = ast_dumb_destroy, 220 221 }; 222 223 static int __init ast_init(void) 224 { 225 #ifdef CONFIG_VGA_CONSOLE 226 if (vgacon_text_force() && ast_modeset == -1) 227 return -EINVAL; 228 #endif 229 230 if (ast_modeset == 0) 231 return -EINVAL; 232 return drm_pci_init(&driver, &ast_pci_driver); 233 } 234 static void __exit ast_exit(void) 235 { 236 drm_pci_exit(&driver, &ast_pci_driver); 237 } 238 239 module_init(ast_init); 240 module_exit(ast_exit); 241 242 MODULE_AUTHOR(DRIVER_AUTHOR); 243 MODULE_DESCRIPTION(DRIVER_DESC); 244 MODULE_LICENSE("GPL and additional rights"); 245 246