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/module.h> 30 #include <linux/pci.h> 31 32 #include <drm/drm_aperture.h> 33 #include <drm/drm_atomic_helper.h> 34 #include <drm/drm_drv.h> 35 #include <drm/drm_fbdev_generic.h> 36 #include <drm/drm_gem_shmem_helper.h> 37 #include <drm/drm_module.h> 38 #include <drm/drm_probe_helper.h> 39 40 #include "ast_drv.h" 41 42 static 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_SHMEM_DRIVER_OPS 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 int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 93 { 94 struct ast_device *ast; 95 struct drm_device *dev; 96 int ret; 97 98 ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &ast_driver); 99 if (ret) 100 return ret; 101 102 ret = pcim_enable_device(pdev); 103 if (ret) 104 return ret; 105 106 ast = ast_device_create(&ast_driver, pdev, ent->driver_data); 107 if (IS_ERR(ast)) 108 return PTR_ERR(ast); 109 dev = &ast->base; 110 111 ret = drm_dev_register(dev, ent->driver_data); 112 if (ret) 113 return ret; 114 115 drm_fbdev_generic_setup(dev, 32); 116 117 return 0; 118 } 119 120 static void ast_pci_remove(struct pci_dev *pdev) 121 { 122 struct drm_device *dev = pci_get_drvdata(pdev); 123 124 drm_dev_unregister(dev); 125 drm_atomic_helper_shutdown(dev); 126 } 127 128 static int ast_drm_freeze(struct drm_device *dev) 129 { 130 int error; 131 132 error = drm_mode_config_helper_suspend(dev); 133 if (error) 134 return error; 135 pci_save_state(to_pci_dev(dev->dev)); 136 return 0; 137 } 138 139 static int ast_drm_thaw(struct drm_device *dev) 140 { 141 ast_post_gpu(dev); 142 143 return drm_mode_config_helper_resume(dev); 144 } 145 146 static int ast_drm_resume(struct drm_device *dev) 147 { 148 if (pci_enable_device(to_pci_dev(dev->dev))) 149 return -EIO; 150 151 return ast_drm_thaw(dev); 152 } 153 154 static int ast_pm_suspend(struct device *dev) 155 { 156 struct pci_dev *pdev = to_pci_dev(dev); 157 struct drm_device *ddev = pci_get_drvdata(pdev); 158 int error; 159 160 error = ast_drm_freeze(ddev); 161 if (error) 162 return error; 163 164 pci_disable_device(pdev); 165 pci_set_power_state(pdev, PCI_D3hot); 166 return 0; 167 } 168 169 static int ast_pm_resume(struct device *dev) 170 { 171 struct pci_dev *pdev = to_pci_dev(dev); 172 struct drm_device *ddev = pci_get_drvdata(pdev); 173 return ast_drm_resume(ddev); 174 } 175 176 static int ast_pm_freeze(struct device *dev) 177 { 178 struct pci_dev *pdev = to_pci_dev(dev); 179 struct drm_device *ddev = pci_get_drvdata(pdev); 180 return ast_drm_freeze(ddev); 181 } 182 183 static int ast_pm_thaw(struct device *dev) 184 { 185 struct pci_dev *pdev = to_pci_dev(dev); 186 struct drm_device *ddev = pci_get_drvdata(pdev); 187 return ast_drm_thaw(ddev); 188 } 189 190 static int ast_pm_poweroff(struct device *dev) 191 { 192 struct pci_dev *pdev = to_pci_dev(dev); 193 struct drm_device *ddev = pci_get_drvdata(pdev); 194 195 return ast_drm_freeze(ddev); 196 } 197 198 static const struct dev_pm_ops ast_pm_ops = { 199 .suspend = ast_pm_suspend, 200 .resume = ast_pm_resume, 201 .freeze = ast_pm_freeze, 202 .thaw = ast_pm_thaw, 203 .poweroff = ast_pm_poweroff, 204 .restore = ast_pm_resume, 205 }; 206 207 static struct pci_driver ast_pci_driver = { 208 .name = DRIVER_NAME, 209 .id_table = ast_pciidlist, 210 .probe = ast_pci_probe, 211 .remove = ast_pci_remove, 212 .driver.pm = &ast_pm_ops, 213 }; 214 215 drm_module_pci_driver_if_modeset(ast_pci_driver, ast_modeset); 216 217 MODULE_AUTHOR(DRIVER_AUTHOR); 218 MODULE_DESCRIPTION(DRIVER_DESC); 219 MODULE_LICENSE("GPL and additional rights"); 220