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/*
* Copyright (C) 2012 Avionic Design GmbH
* Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/dma-mapping.h>
#include <asm/dma-iommu.h>
#include "drm.h"
#define DRIVER_NAME "tegra"
#define DRIVER_DESC "NVIDIA Tegra graphics"
#define DRIVER_DATE "20120330"
#define DRIVER_MAJOR 0
#define DRIVER_MINOR 0
#define DRIVER_PATCHLEVEL 0
static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
{
struct device *dev = drm->dev;
struct host1x *host1x;
int err;
host1x = dev_get_drvdata(dev);
drm->dev_private = host1x;
host1x->drm = drm;
drm_mode_config_init(drm);
err = host1x_drm_init(host1x, drm);
if (err < 0)
return err;
err = drm_vblank_init(drm, drm->mode_config.num_crtc);
if (err < 0)
return err;
err = tegra_drm_fb_init(drm);
if (err < 0)
return err;
drm_kms_helper_poll_init(drm);
return 0;
}
static int tegra_drm_unload(struct drm_device *drm)
{
drm_kms_helper_poll_fini(drm);
tegra_drm_fb_exit(drm);
drm_mode_config_cleanup(drm);
return 0;
}
static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp)
{
return 0;
}
static void tegra_drm_lastclose(struct drm_device *drm)
{
struct host1x *host1x = drm->dev_private;
drm_fbdev_cma_restore_mode(host1x->fbdev);
}
static struct drm_ioctl_desc tegra_drm_ioctls[] = {
};
static const struct file_operations tegra_drm_fops = {
.owner = THIS_MODULE,
.open = drm_open,
.release = drm_release,
.unlocked_ioctl = drm_ioctl,
.mmap = drm_gem_cma_mmap,
.poll = drm_poll,
.fasync = drm_fasync,
.read = drm_read,
#ifdef CONFIG_COMPAT
.compat_ioctl = drm_compat_ioctl,
#endif
.llseek = noop_llseek,
};
static struct drm_crtc *tegra_crtc_from_pipe(struct drm_device *drm, int pipe)
{
struct drm_crtc *crtc;
list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) {
struct tegra_dc *dc = to_tegra_dc(crtc);
if (dc->pipe == pipe)
return crtc;
}
return NULL;
}
static u32 tegra_drm_get_vblank_counter(struct drm_device *dev, int crtc)
{
/* TODO: implement real hardware counter using syncpoints */
return drm_vblank_count(dev, crtc);
}
static int tegra_drm_enable_vblank(struct drm_device *drm, int pipe)
{
struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
struct tegra_dc *dc = to_tegra_dc(crtc);
if (!crtc)
return -ENODEV;
tegra_dc_enable_vblank(dc);
return 0;
}
static void tegra_drm_disable_vblank(struct drm_device *drm, int pipe)
{
struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
struct tegra_dc *dc = to_tegra_dc(crtc);
if (crtc)
tegra_dc_disable_vblank(dc);
}
static void tegra_drm_preclose(struct drm_device *drm, struct drm_file *file)
{
struct drm_crtc *crtc;
list_for_each_entry(crtc, &drm->mode_config.crtc_list, head)
tegra_dc_cancel_page_flip(crtc, file);
}
#ifdef CONFIG_DEBUG_FS
static int tegra_debugfs_framebuffers(struct seq_file *s, void *data)
{
struct drm_info_node *node = (struct drm_info_node *)s->private;
struct drm_device *drm = node->minor->dev;
struct drm_framebuffer *fb;
mutex_lock(&drm->mode_config.fb_lock);
list_for_each_entry(fb, &drm->mode_config.fb_list, head) {
seq_printf(s, "%3d: user size: %d x %d, depth %d, %d bpp, refcount %d\n",
fb->base.id, fb->width, fb->height, fb->depth,
fb->bits_per_pixel,
atomic_read(&fb->refcount.refcount));
}
mutex_unlock(&drm->mode_config.fb_lock);
return 0;
}
static struct drm_info_list tegra_debugfs_list[] = {
{ "framebuffers", tegra_debugfs_framebuffers, 0 },
};
static int tegra_debugfs_init(struct drm_minor *minor)
{
return drm_debugfs_create_files(tegra_debugfs_list,
ARRAY_SIZE(tegra_debugfs_list),
minor->debugfs_root, minor);
}
static void tegra_debugfs_cleanup(struct drm_minor *minor)
{
drm_debugfs_remove_files(tegra_debugfs_list,
ARRAY_SIZE(tegra_debugfs_list), minor);
}
#endif
struct drm_driver tegra_drm_driver = {
.driver_features = DRIVER_BUS_PLATFORM | DRIVER_MODESET | DRIVER_GEM,
.load = tegra_drm_load,
.unload = tegra_drm_unload,
.open = tegra_drm_open,
.preclose = tegra_drm_preclose,
.lastclose = tegra_drm_lastclose,
.get_vblank_counter = tegra_drm_get_vblank_counter,
.enable_vblank = tegra_drm_enable_vblank,
.disable_vblank = tegra_drm_disable_vblank,
#if defined(CONFIG_DEBUG_FS)
.debugfs_init = tegra_debugfs_init,
.debugfs_cleanup = tegra_debugfs_cleanup,
#endif
.gem_free_object = drm_gem_cma_free_object,
.gem_vm_ops = &drm_gem_cma_vm_ops,
.dumb_create = drm_gem_cma_dumb_create,
.dumb_map_offset = drm_gem_cma_dumb_map_offset,
.dumb_destroy = drm_gem_cma_dumb_destroy,
.ioctls = tegra_drm_ioctls,
.num_ioctls = ARRAY_SIZE(tegra_drm_ioctls),
.fops = &tegra_drm_fops,
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.date = DRIVER_DATE,
.major = DRIVER_MAJOR,
.minor = DRIVER_MINOR,
.patchlevel = DRIVER_PATCHLEVEL,
};
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