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
 36int ast_modeset = -1;
 37
 38MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
 39module_param_named(modeset, ast_modeset, int, 0400);
 40
 41#define PCI_VENDOR_ASPEED 0x1a03
 42
 43static 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
 54static 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
 61MODULE_DEVICE_TABLE(pci, pciidlist);
 62
 63static 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
 68static void
 69ast_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
 78static 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
 90static 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	drm_modeset_lock_all(dev);
 98	drm_helper_resume_force_mode(dev);
 99	drm_modeset_unlock_all(dev);
100
101	console_lock();
102	ast_fbdev_set_suspend(dev, 0);
103	console_unlock();
104	return error;
105}
106
107static 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
122static 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}
136static 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
143static 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
154static 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
161static 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
169static 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
178static 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
186static 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#ifdef CONFIG_COMPAT
194	.compat_ioctl = drm_compat_ioctl,
195#endif
196	.read = drm_read,
197};
198
199static struct drm_driver driver = {
200	.driver_features = 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_free_object = ast_gem_free_object,
215	.dumb_create = ast_dumb_create,
216	.dumb_map_offset = ast_dumb_mmap_offset,
217	.dumb_destroy = drm_gem_dumb_destroy,
218
219};
220
221static int __init ast_init(void)
222{
223#ifdef CONFIG_VGA_CONSOLE
224	if (vgacon_text_force() && ast_modeset == -1)
225		return -EINVAL;
226#endif
227
228	if (ast_modeset == 0)
229		return -EINVAL;
230	return drm_pci_init(&driver, &ast_pci_driver);
231}
232static void __exit ast_exit(void)
233{
234	drm_pci_exit(&driver, &ast_pci_driver);
235}
236
237module_init(ast_init);
238module_exit(ast_exit);
239
240MODULE_AUTHOR(DRIVER_AUTHOR);
241MODULE_DESCRIPTION(DRIVER_DESC);
242MODULE_LICENSE("GPL and additional rights");
243