diff options
Diffstat (limited to 'drivers/gpu/host1x/drm/drm.c')
| -rw-r--r-- | drivers/gpu/host1x/drm/drm.c | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/drivers/gpu/host1x/drm/drm.c b/drivers/gpu/host1x/drm/drm.c new file mode 100644 index 00000000000..9d452df5bca --- /dev/null +++ b/drivers/gpu/host1x/drm/drm.c @@ -0,0 +1,217 @@ +/* + * 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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