2 * Copyright (C) 2012 Avionic Design GmbH
3 * Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
10 #include <linux/module.h>
11 #include <linux/of_address.h>
12 #include <linux/of_platform.h>
14 #include <linux/dma-mapping.h>
15 #include <asm/dma-iommu.h>
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
26 static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
28 struct device *dev = drm->dev;
29 struct host1x *host1x;
32 host1x = dev_get_drvdata(dev);
33 drm->dev_private = host1x;
36 drm_mode_config_init(drm);
38 err = host1x_drm_init(host1x, drm);
42 err = drm_vblank_init(drm, drm->mode_config.num_crtc);
46 err = tegra_drm_fb_init(drm);
50 drm_kms_helper_poll_init(drm);
55 static int tegra_drm_unload(struct drm_device *drm)
57 drm_kms_helper_poll_fini(drm);
58 tegra_drm_fb_exit(drm);
60 drm_mode_config_cleanup(drm);
65 static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp)
70 static void tegra_drm_lastclose(struct drm_device *drm)
72 struct host1x *host1x = drm->dev_private;
74 drm_fbdev_cma_restore_mode(host1x->fbdev);
77 static struct drm_ioctl_desc tegra_drm_ioctls[] = {
80 static const struct file_operations tegra_drm_fops = {
83 .release = drm_release,
84 .unlocked_ioctl = drm_ioctl,
85 .mmap = drm_gem_cma_mmap,
90 .compat_ioctl = drm_compat_ioctl,
92 .llseek = noop_llseek,
95 static struct drm_crtc *tegra_crtc_from_pipe(struct drm_device *drm, int pipe)
97 struct drm_crtc *crtc;
99 list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) {
100 struct tegra_dc *dc = to_tegra_dc(crtc);
102 if (dc->pipe == pipe)
109 static u32 tegra_drm_get_vblank_counter(struct drm_device *dev, int crtc)
111 /* TODO: implement real hardware counter using syncpoints */
112 return drm_vblank_count(dev, crtc);
115 static int tegra_drm_enable_vblank(struct drm_device *drm, int pipe)
117 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
118 struct tegra_dc *dc = to_tegra_dc(crtc);
123 tegra_dc_enable_vblank(dc);
128 static void tegra_drm_disable_vblank(struct drm_device *drm, int pipe)
130 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
131 struct tegra_dc *dc = to_tegra_dc(crtc);
134 tegra_dc_disable_vblank(dc);
137 static void tegra_drm_preclose(struct drm_device *drm, struct drm_file *file)
139 struct drm_crtc *crtc;
141 list_for_each_entry(crtc, &drm->mode_config.crtc_list, head)
142 tegra_dc_cancel_page_flip(crtc, file);
145 #ifdef CONFIG_DEBUG_FS
146 static int tegra_debugfs_framebuffers(struct seq_file *s, void *data)
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;
152 mutex_lock(&drm->mode_config.fb_lock);
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,
158 atomic_read(&fb->refcount.refcount));
161 mutex_unlock(&drm->mode_config.fb_lock);
166 static struct drm_info_list tegra_debugfs_list[] = {
167 { "framebuffers", tegra_debugfs_framebuffers, 0 },
170 static int tegra_debugfs_init(struct drm_minor *minor)
172 return drm_debugfs_create_files(tegra_debugfs_list,
173 ARRAY_SIZE(tegra_debugfs_list),
174 minor->debugfs_root, minor);
177 static void tegra_debugfs_cleanup(struct drm_minor *minor)
179 drm_debugfs_remove_files(tegra_debugfs_list,
180 ARRAY_SIZE(tegra_debugfs_list), minor);
184 struct 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,
192 .get_vblank_counter = tegra_drm_get_vblank_counter,
193 .enable_vblank = tegra_drm_enable_vblank,
194 .disable_vblank = tegra_drm_disable_vblank,
196 #if defined(CONFIG_DEBUG_FS)
197 .debugfs_init = tegra_debugfs_init,
198 .debugfs_cleanup = tegra_debugfs_cleanup,
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,
207 .ioctls = tegra_drm_ioctls,
208 .num_ioctls = ARRAY_SIZE(tegra_drm_ioctls),
209 .fops = &tegra_drm_fops,
214 .major = DRIVER_MAJOR,
215 .minor = DRIVER_MINOR,
216 .patchlevel = DRIVER_PATCHLEVEL,