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
 37int ast_modeset = -1;
 38
 39MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
 40module_param_named(modeset, ast_modeset, int, 0400);
 41
 42#define PCI_VENDOR_ASPEED 0x1a03
 43
 44static 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
 55static 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
 62MODULE_DEVICE_TABLE(pci, pciidlist);
 63
 64static int __devinit
 65ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 66{
 67	return drm_get_pci_dev(pdev, ent, &driver);
 68}
 69
 70static void
 71ast_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
 80static 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
 92static 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
109static 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
124static 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}
138static 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
145static 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
156static 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
163static 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
171static 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
180static 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
188static 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
199static 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
222static 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}
233static void __exit ast_exit(void)
234{
235	drm_pci_exit(&driver, &ast_pci_driver);
236}
237
238module_init(ast_init);
239module_exit(ast_exit);
240
241MODULE_AUTHOR(DRIVER_AUTHOR);
242MODULE_DESCRIPTION(DRIVER_DESC);
243MODULE_LICENSE("GPL and additional rights");
244