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 __devinit 64 ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 65 { 66 return drm_get_pci_dev(pdev, ent, &driver); 67 } 68 69 static void 70 ast_pci_remove(struct pci_dev *pdev) 71 { 72 struct drm_device *dev = pci_get_drvdata(pdev); 73 74 drm_put_dev(dev); 75 } 76 77 78 79 static int ast_drm_freeze(struct drm_device *dev) 80 { 81 drm_kms_helper_poll_disable(dev); 82 83 pci_save_state(dev->pdev); 84 85 console_lock(); 86 ast_fbdev_set_suspend(dev, 1); 87 console_unlock(); 88 return 0; 89 } 90 91 static int ast_drm_thaw(struct drm_device *dev) 92 { 93 int error = 0; 94 95 ast_post_gpu(dev); 96 97 drm_mode_config_reset(dev); 98 mutex_lock(&dev->mode_config.mutex); 99 drm_helper_resume_force_mode(dev); 100 mutex_unlock(&dev->mode_config.mutex); 101 102 console_lock(); 103 ast_fbdev_set_suspend(dev, 0); 104 console_unlock(); 105 return error; 106 } 107 108 static int ast_drm_resume(struct drm_device *dev) 109 { 110 int ret; 111 112 if (pci_enable_device(dev->pdev)) 113 return -EIO; 114 115 ret = ast_drm_thaw(dev); 116 if (ret) 117 return ret; 118 119 drm_kms_helper_poll_enable(dev); 120 return 0; 121 } 122 123 static int ast_pm_suspend(struct device *dev) 124 { 125 struct pci_dev *pdev = to_pci_dev(dev); 126 struct drm_device *ddev = pci_get_drvdata(pdev); 127 int error; 128 129 error = ast_drm_freeze(ddev); 130 if (error) 131 return error; 132 133 pci_disable_device(pdev); 134 pci_set_power_state(pdev, PCI_D3hot); 135 return 0; 136 } 137 static int ast_pm_resume(struct device *dev) 138 { 139 struct pci_dev *pdev = to_pci_dev(dev); 140 struct drm_device *ddev = pci_get_drvdata(pdev); 141 return ast_drm_resume(ddev); 142 } 143 144 static int ast_pm_freeze(struct device *dev) 145 { 146 struct pci_dev *pdev = to_pci_dev(dev); 147 struct drm_device *ddev = pci_get_drvdata(pdev); 148 149 if (!ddev || !ddev->dev_private) 150 return -ENODEV; 151 return ast_drm_freeze(ddev); 152 153 } 154 155 static int ast_pm_thaw(struct device *dev) 156 { 157 struct pci_dev *pdev = to_pci_dev(dev); 158 struct drm_device *ddev = pci_get_drvdata(pdev); 159 return ast_drm_thaw(ddev); 160 } 161 162 static int ast_pm_poweroff(struct device *dev) 163 { 164 struct pci_dev *pdev = to_pci_dev(dev); 165 struct drm_device *ddev = pci_get_drvdata(pdev); 166 167 return ast_drm_freeze(ddev); 168 } 169 170 static const struct dev_pm_ops ast_pm_ops = { 171 .suspend = ast_pm_suspend, 172 .resume = ast_pm_resume, 173 .freeze = ast_pm_freeze, 174 .thaw = ast_pm_thaw, 175 .poweroff = ast_pm_poweroff, 176 .restore = ast_pm_resume, 177 }; 178 179 static struct pci_driver ast_pci_driver = { 180 .name = DRIVER_NAME, 181 .id_table = pciidlist, 182 .probe = ast_pci_probe, 183 .remove = ast_pci_remove, 184 .driver.pm = &ast_pm_ops, 185 }; 186 187 static const struct file_operations ast_fops = { 188 .owner = THIS_MODULE, 189 .open = drm_open, 190 .release = drm_release, 191 .unlocked_ioctl = drm_ioctl, 192 .mmap = ast_mmap, 193 .poll = drm_poll, 194 .fasync = drm_fasync, 195 #ifdef CONFIG_COMPAT 196 .compat_ioctl = drm_compat_ioctl, 197 #endif 198 .read = drm_read, 199 }; 200 201 static struct drm_driver driver = { 202 .driver_features = DRIVER_USE_MTRR | DRIVER_MODESET | DRIVER_GEM, 203 .dev_priv_size = 0, 204 205 .load = ast_driver_load, 206 .unload = ast_driver_unload, 207 208 .fops = &ast_fops, 209 .name = DRIVER_NAME, 210 .desc = DRIVER_DESC, 211 .date = DRIVER_DATE, 212 .major = DRIVER_MAJOR, 213 .minor = DRIVER_MINOR, 214 .patchlevel = DRIVER_PATCHLEVEL, 215 216 .gem_init_object = ast_gem_init_object, 217 .gem_free_object = ast_gem_free_object, 218 .dumb_create = ast_dumb_create, 219 .dumb_map_offset = ast_dumb_mmap_offset, 220 .dumb_destroy = ast_dumb_destroy, 221 222 }; 223 224 static int __init ast_init(void) 225 { 226 #ifdef CONFIG_VGA_CONSOLE 227 if (vgacon_text_force() && ast_modeset == -1) 228 return -EINVAL; 229 #endif 230 231 if (ast_modeset == 0) 232 return -EINVAL; 233 return drm_pci_init(&driver, &ast_pci_driver); 234 } 235 static void __exit ast_exit(void) 236 { 237 drm_pci_exit(&driver, &ast_pci_driver); 238 } 239 240 module_init(ast_init); 241 module_exit(ast_exit); 242 243 MODULE_AUTHOR(DRIVER_AUTHOR); 244 MODULE_DESCRIPTION(DRIVER_DESC); 245 MODULE_LICENSE("GPL and additional rights"); 246 247