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 "drmP.h" 32 #include "drm.h" 33 #include "drm_crtc_helper.h" 34 35 #include "ast_drv.h" 36 37 int ast_modeset = -1; 38 39 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting"); 40 module_param_named(modeset, ast_modeset, int, 0400); 41 42 #define PCI_VENDOR_ASPEED 0x1a03 43 44 static struct drm_driver driver; 45 46 #define AST_VGA_DEVICE(id, info) { \ 47 .class = PCI_BASE_CLASS_DISPLAY << 16, \ 48 .class_mask = 0xff0000, \ 49 .vendor = PCI_VENDOR_ASPEED, \ 50 .device = id, \ 51 .subvendor = PCI_ANY_ID, \ 52 .subdevice = PCI_ANY_ID, \ 53 .driver_data = (unsigned long) info } 54 55 static DEFINE_PCI_DEVICE_TABLE(pciidlist) = { 56 AST_VGA_DEVICE(PCI_CHIP_AST2000, NULL), 57 AST_VGA_DEVICE(PCI_CHIP_AST2100, NULL), 58 /* AST_VGA_DEVICE(PCI_CHIP_AST1180, NULL), - don't bind to 1180 for now */ 59 {0, 0, 0}, 60 }; 61 62 MODULE_DEVICE_TABLE(pci, pciidlist); 63 64 static int __devinit 65 ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 66 { 67 return drm_get_pci_dev(pdev, ent, &driver); 68 } 69 70 static void 71 ast_pci_remove(struct pci_dev *pdev) 72 { 73 struct drm_device *dev = pci_get_drvdata(pdev); 74 75 drm_put_dev(dev); 76 } 77 78 79 80 static int ast_drm_freeze(struct drm_device *dev) 81 { 82 drm_kms_helper_poll_disable(dev); 83 84 pci_save_state(dev->pdev); 85 86 console_lock(); 87 ast_fbdev_set_suspend(dev, 1); 88 console_unlock(); 89 return 0; 90 } 91 92 static int ast_drm_thaw(struct drm_device *dev) 93 { 94 int error = 0; 95 96 ast_post_gpu(dev); 97 98 drm_mode_config_reset(dev); 99 mutex_lock(&dev->mode_config.mutex); 100 drm_helper_resume_force_mode(dev); 101 mutex_unlock(&dev->mode_config.mutex); 102 103 console_lock(); 104 ast_fbdev_set_suspend(dev, 0); 105 console_unlock(); 106 return error; 107 } 108 109 static int ast_drm_resume(struct drm_device *dev) 110 { 111 int ret; 112 113 if (pci_enable_device(dev->pdev)) 114 return -EIO; 115 116 ret = ast_drm_thaw(dev); 117 if (ret) 118 return ret; 119 120 drm_kms_helper_poll_enable(dev); 121 return 0; 122 } 123 124 static int ast_pm_suspend(struct device *dev) 125 { 126 struct pci_dev *pdev = to_pci_dev(dev); 127 struct drm_device *ddev = pci_get_drvdata(pdev); 128 int error; 129 130 error = ast_drm_freeze(ddev); 131 if (error) 132 return error; 133 134 pci_disable_device(pdev); 135 pci_set_power_state(pdev, PCI_D3hot); 136 return 0; 137 } 138 static int ast_pm_resume(struct device *dev) 139 { 140 struct pci_dev *pdev = to_pci_dev(dev); 141 struct drm_device *ddev = pci_get_drvdata(pdev); 142 return ast_drm_resume(ddev); 143 } 144 145 static int ast_pm_freeze(struct device *dev) 146 { 147 struct pci_dev *pdev = to_pci_dev(dev); 148 struct drm_device *ddev = pci_get_drvdata(pdev); 149 150 if (!ddev || !ddev->dev_private) 151 return -ENODEV; 152 return ast_drm_freeze(ddev); 153 154 } 155 156 static int ast_pm_thaw(struct device *dev) 157 { 158 struct pci_dev *pdev = to_pci_dev(dev); 159 struct drm_device *ddev = pci_get_drvdata(pdev); 160 return ast_drm_thaw(ddev); 161 } 162 163 static int ast_pm_poweroff(struct device *dev) 164 { 165 struct pci_dev *pdev = to_pci_dev(dev); 166 struct drm_device *ddev = pci_get_drvdata(pdev); 167 168 return ast_drm_freeze(ddev); 169 } 170 171 static const struct dev_pm_ops ast_pm_ops = { 172 .suspend = ast_pm_suspend, 173 .resume = ast_pm_resume, 174 .freeze = ast_pm_freeze, 175 .thaw = ast_pm_thaw, 176 .poweroff = ast_pm_poweroff, 177 .restore = ast_pm_resume, 178 }; 179 180 static struct pci_driver ast_pci_driver = { 181 .name = DRIVER_NAME, 182 .id_table = pciidlist, 183 .probe = ast_pci_probe, 184 .remove = ast_pci_remove, 185 .driver.pm = &ast_pm_ops, 186 }; 187 188 static const struct file_operations ast_fops = { 189 .owner = THIS_MODULE, 190 .open = drm_open, 191 .release = drm_release, 192 .unlocked_ioctl = drm_ioctl, 193 .mmap = ast_mmap, 194 .poll = drm_poll, 195 .fasync = drm_fasync, 196 .read = drm_read, 197 }; 198 199 static struct drm_driver driver = { 200 .driver_features = DRIVER_USE_MTRR | DRIVER_MODESET | DRIVER_GEM, 201 .dev_priv_size = 0, 202 203 .load = ast_driver_load, 204 .unload = ast_driver_unload, 205 206 .fops = &ast_fops, 207 .name = DRIVER_NAME, 208 .desc = DRIVER_DESC, 209 .date = DRIVER_DATE, 210 .major = DRIVER_MAJOR, 211 .minor = DRIVER_MINOR, 212 .patchlevel = DRIVER_PATCHLEVEL, 213 214 .gem_init_object = ast_gem_init_object, 215 .gem_free_object = ast_gem_free_object, 216 .dumb_create = ast_dumb_create, 217 .dumb_map_offset = ast_dumb_mmap_offset, 218 .dumb_destroy = ast_dumb_destroy, 219 220 }; 221 222 static int __init ast_init(void) 223 { 224 #ifdef CONFIG_VGA_CONSOLE 225 if (vgacon_text_force() && ast_modeset == -1) 226 return -EINVAL; 227 #endif 228 229 if (ast_modeset == 0) 230 return -EINVAL; 231 return drm_pci_init(&driver, &ast_pci_driver); 232 } 233 static void __exit ast_exit(void) 234 { 235 drm_pci_exit(&driver, &ast_pci_driver); 236 } 237 238 module_init(ast_init); 239 module_exit(ast_exit); 240 241 MODULE_AUTHOR(DRIVER_AUTHOR); 242 MODULE_DESCRIPTION(DRIVER_DESC); 243 MODULE_LICENSE("GPL and additional rights"); 244 245