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10#include <linux/module.h>
11#include <linux/of_address.h>
12#include <linux/of_platform.h>
13
14#include <linux/dma-mapping.h>
15#include <asm/dma-iommu.h>
16
17#include "drm.h"
18
19#define DRIVER_NAME "tegra"
20#define DRIVER_DESC "NVIDIA Tegra graphics"
21#define DRIVER_DATE "20120330"
22#define DRIVER_MAJOR 0
23#define DRIVER_MINOR 0
24#define DRIVER_PATCHLEVEL 0
25
26static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
27{
28 struct device *dev = drm->dev;
29 struct host1x *host1x;
30 int err;
31
32 host1x = dev_get_drvdata(dev);
33 drm->dev_private = host1x;
34 host1x->drm = drm;
35
36 drm_mode_config_init(drm);
37
38 err = host1x_drm_init(host1x, drm);
39 if (err < 0)
40 return err;
41
42 err = drm_vblank_init(drm, drm->mode_config.num_crtc);
43 if (err < 0)
44 return err;
45
46 err = tegra_drm_fb_init(drm);
47 if (err < 0)
48 return err;
49
50 drm_kms_helper_poll_init(drm);
51
52 return 0;
53}
54
55static int tegra_drm_unload(struct drm_device *drm)
56{
57 drm_kms_helper_poll_fini(drm);
58 tegra_drm_fb_exit(drm);
59
60 drm_mode_config_cleanup(drm);
61
62 return 0;
63}
64
65static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp)
66{
67 return 0;
68}
69
70static void tegra_drm_lastclose(struct drm_device *drm)
71{
72 struct host1x *host1x = drm->dev_private;
73
74 drm_fbdev_cma_restore_mode(host1x->fbdev);
75}
76
77static struct drm_ioctl_desc tegra_drm_ioctls[] = {
78};
79
80static const struct file_operations tegra_drm_fops = {
81 .owner = THIS_MODULE,
82 .open = drm_open,
83 .release = drm_release,
84 .unlocked_ioctl = drm_ioctl,
85 .mmap = drm_gem_cma_mmap,
86 .poll = drm_poll,
87 .fasync = drm_fasync,
88 .read = drm_read,
89#ifdef CONFIG_COMPAT
90 .compat_ioctl = drm_compat_ioctl,
91#endif
92 .llseek = noop_llseek,
93};
94
95static struct drm_crtc *tegra_crtc_from_pipe(struct drm_device *drm, int pipe)
96{
97 struct drm_crtc *crtc;
98
99 list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) {
100 struct tegra_dc *dc = to_tegra_dc(crtc);
101
102 if (dc->pipe == pipe)
103 return crtc;
104 }
105
106 return NULL;
107}
108
109static u32 tegra_drm_get_vblank_counter(struct drm_device *dev, int crtc)
110{
111
112 return drm_vblank_count(dev, crtc);
113}
114
115static int tegra_drm_enable_vblank(struct drm_device *drm, int pipe)
116{
117 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
118 struct tegra_dc *dc = to_tegra_dc(crtc);
119
120 if (!crtc)
121 return -ENODEV;
122
123 tegra_dc_enable_vblank(dc);
124
125 return 0;
126}
127
128static void tegra_drm_disable_vblank(struct drm_device *drm, int pipe)
129{
130 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
131 struct tegra_dc *dc = to_tegra_dc(crtc);
132
133 if (crtc)
134 tegra_dc_disable_vblank(dc);
135}
136
137static void tegra_drm_preclose(struct drm_device *drm, struct drm_file *file)
138{
139 struct drm_crtc *crtc;
140
141 list_for_each_entry(crtc, &drm->mode_config.crtc_list, head)
142 tegra_dc_cancel_page_flip(crtc, file);
143}
144
145#ifdef CONFIG_DEBUG_FS
146static int tegra_debugfs_framebuffers(struct seq_file *s, void *data)
147{
148 struct drm_info_node *node = (struct drm_info_node *)s->private;
149 struct drm_device *drm = node->minor->dev;
150 struct drm_framebuffer *fb;
151
152 mutex_lock(&drm->mode_config.fb_lock);
153
154 list_for_each_entry(fb, &drm->mode_config.fb_list, head) {
155 seq_printf(s, "%3d: user size: %d x %d, depth %d, %d bpp, refcount %d\n",
156 fb->base.id, fb->width, fb->height, fb->depth,
157 fb->bits_per_pixel,
158 atomic_read(&fb->refcount.refcount));
159 }
160
161 mutex_unlock(&drm->mode_config.fb_lock);
162
163 return 0;
164}
165
166static struct drm_info_list tegra_debugfs_list[] = {
167 { "framebuffers", tegra_debugfs_framebuffers, 0 },
168};
169
170static int tegra_debugfs_init(struct drm_minor *minor)
171{
172 return drm_debugfs_create_files(tegra_debugfs_list,
173 ARRAY_SIZE(tegra_debugfs_list),
174 minor->debugfs_root, minor);
175}
176
177static void tegra_debugfs_cleanup(struct drm_minor *minor)
178{
179 drm_debugfs_remove_files(tegra_debugfs_list,
180 ARRAY_SIZE(tegra_debugfs_list), minor);
181}
182#endif
183
184struct drm_driver tegra_drm_driver = {
185 .driver_features = DRIVER_BUS_PLATFORM | DRIVER_MODESET | DRIVER_GEM,
186 .load = tegra_drm_load,
187 .unload = tegra_drm_unload,
188 .open = tegra_drm_open,
189 .preclose = tegra_drm_preclose,
190 .lastclose = tegra_drm_lastclose,
191
192 .get_vblank_counter = tegra_drm_get_vblank_counter,
193 .enable_vblank = tegra_drm_enable_vblank,
194 .disable_vblank = tegra_drm_disable_vblank,
195
196#if defined(CONFIG_DEBUG_FS)
197 .debugfs_init = tegra_debugfs_init,
198 .debugfs_cleanup = tegra_debugfs_cleanup,
199#endif
200
201 .gem_free_object = drm_gem_cma_free_object,
202 .gem_vm_ops = &drm_gem_cma_vm_ops,
203 .dumb_create = drm_gem_cma_dumb_create,
204 .dumb_map_offset = drm_gem_cma_dumb_map_offset,
205 .dumb_destroy = drm_gem_cma_dumb_destroy,
206
207 .ioctls = tegra_drm_ioctls,
208 .num_ioctls = ARRAY_SIZE(tegra_drm_ioctls),
209 .fops = &tegra_drm_fops,
210
211 .name = DRIVER_NAME,
212 .desc = DRIVER_DESC,
213 .date = DRIVER_DATE,
214 .major = DRIVER_MAJOR,
215 .minor = DRIVER_MINOR,
216 .patchlevel = DRIVER_PATCHLEVEL,
217};
218
