2011-10-04 18:19:01 +08:00
|
|
|
/* exynos_drm_fb.c
|
|
|
|
*
|
|
|
|
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
|
|
|
|
* Authors:
|
|
|
|
* Inki Dae <inki.dae@samsung.com>
|
|
|
|
* Joonyoung Shim <jy0922.shim@samsung.com>
|
|
|
|
* Seung-Woo Kim <sw0312.kim@samsung.com>
|
|
|
|
*
|
2012-12-18 01:30:17 +08:00
|
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
|
|
* under the terms of the GNU General Public License as published by the
|
|
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
|
|
* option) any later version.
|
2011-10-04 18:19:01 +08:00
|
|
|
*/
|
|
|
|
|
2012-10-03 01:01:07 +08:00
|
|
|
#include <drm/drmP.h>
|
2015-06-01 23:04:52 +08:00
|
|
|
#include <drm/drm_atomic.h>
|
2015-06-01 23:04:46 +08:00
|
|
|
#include <drm/drm_atomic_helper.h>
|
2019-01-18 05:03:34 +08:00
|
|
|
#include <drm/drm_crtc.h>
|
|
|
|
#include <drm/drm_fb_helper.h>
|
2018-03-30 22:11:30 +08:00
|
|
|
#include <drm/drm_gem_framebuffer_helper.h>
|
2019-01-18 05:03:34 +08:00
|
|
|
#include <drm/drm_probe_helper.h>
|
2012-10-20 22:53:42 +08:00
|
|
|
#include <uapi/drm/exynos_drm.h>
|
2011-10-04 18:19:01 +08:00
|
|
|
|
2011-10-18 15:58:05 +08:00
|
|
|
#include "exynos_drm_drv.h"
|
2011-10-04 18:19:01 +08:00
|
|
|
#include "exynos_drm_fb.h"
|
2014-03-17 18:27:17 +08:00
|
|
|
#include "exynos_drm_fbdev.h"
|
2014-02-19 20:02:55 +08:00
|
|
|
#include "exynos_drm_crtc.h"
|
2011-10-04 18:19:01 +08:00
|
|
|
|
2012-10-20 22:53:42 +08:00
|
|
|
static int check_fb_gem_memory_type(struct drm_device *drm_dev,
|
2015-10-02 08:33:47 +08:00
|
|
|
struct exynos_drm_gem *exynos_gem)
|
2012-10-20 22:53:42 +08:00
|
|
|
{
|
|
|
|
unsigned int flags;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* if exynos drm driver supports iommu then framebuffer can use
|
|
|
|
* all the buffer types.
|
|
|
|
*/
|
|
|
|
if (is_drm_iommu_supported(drm_dev))
|
|
|
|
return 0;
|
|
|
|
|
2015-10-02 08:33:47 +08:00
|
|
|
flags = exynos_gem->flags;
|
2012-10-20 22:53:42 +08:00
|
|
|
|
|
|
|
/*
|
2016-08-09 07:48:20 +08:00
|
|
|
* Physically non-contiguous memory type for framebuffer is not
|
|
|
|
* supported without IOMMU.
|
2012-10-20 22:53:42 +08:00
|
|
|
*/
|
|
|
|
if (IS_NONCONTIG_BUFFER(flags)) {
|
2019-04-15 13:24:36 +08:00
|
|
|
DRM_DEV_ERROR(drm_dev->dev,
|
|
|
|
"Non-contiguous GEM memory is not supported.\n");
|
2012-10-20 22:53:42 +08:00
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-12-15 19:21:06 +08:00
|
|
|
static const struct drm_framebuffer_funcs exynos_drm_fb_funcs = {
|
2018-03-30 22:11:30 +08:00
|
|
|
.destroy = drm_gem_fb_destroy,
|
|
|
|
.create_handle = drm_gem_fb_create_handle,
|
2011-10-04 18:19:01 +08:00
|
|
|
};
|
|
|
|
|
2011-12-13 13:46:57 +08:00
|
|
|
struct drm_framebuffer *
|
|
|
|
exynos_drm_framebuffer_init(struct drm_device *dev,
|
2015-11-12 01:11:29 +08:00
|
|
|
const struct drm_mode_fb_cmd2 *mode_cmd,
|
2015-10-02 08:33:47 +08:00
|
|
|
struct exynos_drm_gem **exynos_gem,
|
2015-09-01 15:22:52 +08:00
|
|
|
int count)
|
2011-10-04 18:19:01 +08:00
|
|
|
{
|
2018-03-30 22:11:32 +08:00
|
|
|
struct drm_framebuffer *fb;
|
2015-09-01 15:22:52 +08:00
|
|
|
int i;
|
2011-10-04 18:19:01 +08:00
|
|
|
int ret;
|
|
|
|
|
2018-03-30 22:11:32 +08:00
|
|
|
fb = kzalloc(sizeof(*fb), GFP_KERNEL);
|
|
|
|
if (!fb)
|
2011-10-04 18:19:01 +08:00
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
|
2015-09-01 15:22:52 +08:00
|
|
|
for (i = 0; i < count; i++) {
|
2015-10-02 08:33:47 +08:00
|
|
|
ret = check_fb_gem_memory_type(dev, exynos_gem[i]);
|
2015-09-01 15:22:52 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
2018-03-30 22:11:32 +08:00
|
|
|
fb->obj[i] = &exynos_gem[i]->base;
|
2015-09-01 15:22:52 +08:00
|
|
|
}
|
|
|
|
|
2018-03-30 22:11:32 +08:00
|
|
|
drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
|
2015-09-01 15:22:47 +08:00
|
|
|
|
2018-03-30 22:11:32 +08:00
|
|
|
ret = drm_framebuffer_init(dev, fb, &exynos_drm_fb_funcs);
|
2015-09-01 15:22:52 +08:00
|
|
|
if (ret < 0) {
|
2019-04-15 13:24:36 +08:00
|
|
|
DRM_DEV_ERROR(dev->dev,
|
|
|
|
"failed to initialize framebuffer\n");
|
2015-09-01 15:22:52 +08:00
|
|
|
goto err;
|
2011-10-04 18:19:01 +08:00
|
|
|
}
|
|
|
|
|
2018-03-30 22:11:32 +08:00
|
|
|
return fb;
|
2015-09-01 15:22:52 +08:00
|
|
|
|
|
|
|
err:
|
2018-03-30 22:11:32 +08:00
|
|
|
kfree(fb);
|
2015-09-01 15:22:52 +08:00
|
|
|
return ERR_PTR(ret);
|
2011-10-04 18:19:01 +08:00
|
|
|
}
|
|
|
|
|
2011-12-13 13:46:57 +08:00
|
|
|
static struct drm_framebuffer *
|
|
|
|
exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
|
2015-11-12 01:11:29 +08:00
|
|
|
const struct drm_mode_fb_cmd2 *mode_cmd)
|
2011-10-04 18:19:01 +08:00
|
|
|
{
|
2017-07-12 18:09:22 +08:00
|
|
|
const struct drm_format_info *info = drm_get_format_info(dev, mode_cmd);
|
2015-10-02 08:33:47 +08:00
|
|
|
struct exynos_drm_gem *exynos_gem[MAX_FB_BUFFER];
|
2015-09-01 15:22:53 +08:00
|
|
|
struct drm_framebuffer *fb;
|
|
|
|
int i;
|
|
|
|
int ret;
|
2011-12-15 13:36:22 +08:00
|
|
|
|
2017-07-12 18:09:22 +08:00
|
|
|
for (i = 0; i < info->num_planes; i++) {
|
|
|
|
unsigned int height = (i == 0) ? mode_cmd->height :
|
|
|
|
DIV_ROUND_UP(mode_cmd->height, info->vsub);
|
|
|
|
unsigned long size = height * mode_cmd->pitches[i] +
|
|
|
|
mode_cmd->offsets[i];
|
|
|
|
|
2018-07-09 21:44:32 +08:00
|
|
|
exynos_gem[i] = exynos_drm_gem_get(file_priv,
|
|
|
|
mode_cmd->handles[i]);
|
|
|
|
if (!exynos_gem[i]) {
|
2019-04-15 13:24:36 +08:00
|
|
|
DRM_DEV_ERROR(dev->dev,
|
|
|
|
"failed to lookup gem object\n");
|
2013-02-12 20:23:54 +08:00
|
|
|
ret = -ENOENT;
|
2015-09-01 15:22:51 +08:00
|
|
|
goto err;
|
2011-12-15 13:36:22 +08:00
|
|
|
}
|
|
|
|
|
2017-07-12 18:09:22 +08:00
|
|
|
if (size > exynos_gem[i]->size) {
|
|
|
|
i++;
|
|
|
|
ret = -EINVAL;
|
|
|
|
goto err;
|
|
|
|
}
|
2011-12-15 13:36:22 +08:00
|
|
|
}
|
|
|
|
|
2015-10-02 08:33:47 +08:00
|
|
|
fb = exynos_drm_framebuffer_init(dev, mode_cmd, exynos_gem, i);
|
2015-09-01 15:22:53 +08:00
|
|
|
if (IS_ERR(fb)) {
|
|
|
|
ret = PTR_ERR(fb);
|
2015-09-01 15:22:51 +08:00
|
|
|
goto err;
|
2012-12-14 12:39:03 +08:00
|
|
|
}
|
|
|
|
|
2015-09-01 15:22:53 +08:00
|
|
|
return fb;
|
2013-02-12 20:23:54 +08:00
|
|
|
|
2015-09-01 15:22:51 +08:00
|
|
|
err:
|
2015-09-01 15:22:53 +08:00
|
|
|
while (i--)
|
2018-07-09 21:44:32 +08:00
|
|
|
exynos_drm_gem_put(exynos_gem[i]);
|
2013-02-12 20:23:54 +08:00
|
|
|
|
|
|
|
return ERR_PTR(ret);
|
2011-10-04 18:19:01 +08:00
|
|
|
}
|
|
|
|
|
2015-11-30 21:53:21 +08:00
|
|
|
dma_addr_t exynos_drm_fb_dma_addr(struct drm_framebuffer *fb, int index)
|
2011-10-04 18:19:01 +08:00
|
|
|
{
|
2018-03-30 22:11:31 +08:00
|
|
|
struct exynos_drm_gem *exynos_gem;
|
2011-10-04 18:19:01 +08:00
|
|
|
|
2017-05-22 16:40:52 +08:00
|
|
|
if (WARN_ON_ONCE(index >= MAX_FB_BUFFER))
|
|
|
|
return 0;
|
2011-12-15 13:36:22 +08:00
|
|
|
|
2018-03-30 22:11:31 +08:00
|
|
|
exynos_gem = to_exynos_gem(fb->obj[index]);
|
|
|
|
return exynos_gem->dma_addr + fb->offsets[index];
|
2011-10-04 18:19:01 +08:00
|
|
|
}
|
|
|
|
|
2017-01-20 11:51:41 +08:00
|
|
|
static struct drm_mode_config_helper_funcs exynos_drm_mode_config_helpers = {
|
2017-07-20 21:01:16 +08:00
|
|
|
.atomic_commit_tail = drm_atomic_helper_commit_tail_rpm,
|
2017-01-20 11:51:41 +08:00
|
|
|
};
|
|
|
|
|
2012-05-17 19:27:23 +08:00
|
|
|
static const struct drm_mode_config_funcs exynos_drm_mode_config_funcs = {
|
2011-12-13 13:46:57 +08:00
|
|
|
.fb_create = exynos_user_fb_create,
|
2017-12-06 02:24:57 +08:00
|
|
|
.output_poll_changed = drm_fb_helper_output_poll_changed,
|
2018-03-21 18:20:25 +08:00
|
|
|
.atomic_check = drm_atomic_helper_check,
|
2017-01-20 11:51:41 +08:00
|
|
|
.atomic_commit = drm_atomic_helper_commit,
|
2011-10-04 18:19:01 +08:00
|
|
|
};
|
|
|
|
|
|
|
|
void exynos_drm_mode_config_init(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
dev->mode_config.min_width = 0;
|
|
|
|
dev->mode_config.min_height = 0;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* set max width and height as default value(4096x4096).
|
|
|
|
* this value would be used to check framebuffer size limitation
|
|
|
|
* at drm_mode_addfb().
|
|
|
|
*/
|
|
|
|
dev->mode_config.max_width = 4096;
|
|
|
|
dev->mode_config.max_height = 4096;
|
|
|
|
|
|
|
|
dev->mode_config.funcs = &exynos_drm_mode_config_funcs;
|
2017-01-20 11:51:41 +08:00
|
|
|
dev->mode_config.helper_private = &exynos_drm_mode_config_helpers;
|
2017-08-22 22:19:37 +08:00
|
|
|
|
|
|
|
dev->mode_config.allow_fb_modifiers = true;
|
2018-03-21 18:20:25 +08:00
|
|
|
|
|
|
|
dev->mode_config.normalize_zpos = true;
|
2011-10-04 18:19:01 +08:00
|
|
|
}
|