![Noralf Trønnes](/assets/img/avatar_default.png)
This driver can use drm_fb_helper_lastclose() as its .lastclose callback. It can also use drm_fb_helper_output_poll_changed() as its .output_poll_changed callback. Cc: Inki Dae <inki.dae@samsung.com> Cc: Joonyoung Shim <jy0922.shim@samsung.com> Cc: Seung-Woo Kim <sw0312.kim@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Inki Dae <inki.dae@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171205182504.41923-5-noralf@tronnes.org
231 lines
5.6 KiB
C
231 lines
5.6 KiB
C
/* 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>
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <drm/drmP.h>
|
|
#include <drm/drm_crtc.h>
|
|
#include <drm/drm_crtc_helper.h>
|
|
#include <drm/drm_fb_helper.h>
|
|
#include <drm/drm_atomic.h>
|
|
#include <drm/drm_atomic_helper.h>
|
|
#include <uapi/drm/exynos_drm.h>
|
|
|
|
#include "exynos_drm_drv.h"
|
|
#include "exynos_drm_fb.h"
|
|
#include "exynos_drm_fbdev.h"
|
|
#include "exynos_drm_iommu.h"
|
|
#include "exynos_drm_crtc.h"
|
|
|
|
#define to_exynos_fb(x) container_of(x, struct exynos_drm_fb, fb)
|
|
|
|
/*
|
|
* exynos specific framebuffer structure.
|
|
*
|
|
* @fb: drm framebuffer obejct.
|
|
* @exynos_gem: array of exynos specific gem object containing a gem object.
|
|
*/
|
|
struct exynos_drm_fb {
|
|
struct drm_framebuffer fb;
|
|
struct exynos_drm_gem *exynos_gem[MAX_FB_BUFFER];
|
|
dma_addr_t dma_addr[MAX_FB_BUFFER];
|
|
};
|
|
|
|
static int check_fb_gem_memory_type(struct drm_device *drm_dev,
|
|
struct exynos_drm_gem *exynos_gem)
|
|
{
|
|
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;
|
|
|
|
flags = exynos_gem->flags;
|
|
|
|
/*
|
|
* Physically non-contiguous memory type for framebuffer is not
|
|
* supported without IOMMU.
|
|
*/
|
|
if (IS_NONCONTIG_BUFFER(flags)) {
|
|
DRM_ERROR("Non-contiguous GEM memory is not supported.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void exynos_drm_fb_destroy(struct drm_framebuffer *fb)
|
|
{
|
|
struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb);
|
|
unsigned int i;
|
|
|
|
drm_framebuffer_cleanup(fb);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(exynos_fb->exynos_gem); i++) {
|
|
struct drm_gem_object *obj;
|
|
|
|
if (exynos_fb->exynos_gem[i] == NULL)
|
|
continue;
|
|
|
|
obj = &exynos_fb->exynos_gem[i]->base;
|
|
drm_gem_object_unreference_unlocked(obj);
|
|
}
|
|
|
|
kfree(exynos_fb);
|
|
exynos_fb = NULL;
|
|
}
|
|
|
|
static int exynos_drm_fb_create_handle(struct drm_framebuffer *fb,
|
|
struct drm_file *file_priv,
|
|
unsigned int *handle)
|
|
{
|
|
struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb);
|
|
|
|
return drm_gem_handle_create(file_priv,
|
|
&exynos_fb->exynos_gem[0]->base, handle);
|
|
}
|
|
|
|
static const struct drm_framebuffer_funcs exynos_drm_fb_funcs = {
|
|
.destroy = exynos_drm_fb_destroy,
|
|
.create_handle = exynos_drm_fb_create_handle,
|
|
};
|
|
|
|
struct drm_framebuffer *
|
|
exynos_drm_framebuffer_init(struct drm_device *dev,
|
|
const struct drm_mode_fb_cmd2 *mode_cmd,
|
|
struct exynos_drm_gem **exynos_gem,
|
|
int count)
|
|
{
|
|
struct exynos_drm_fb *exynos_fb;
|
|
int i;
|
|
int ret;
|
|
|
|
exynos_fb = kzalloc(sizeof(*exynos_fb), GFP_KERNEL);
|
|
if (!exynos_fb)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
for (i = 0; i < count; i++) {
|
|
ret = check_fb_gem_memory_type(dev, exynos_gem[i]);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
exynos_fb->exynos_gem[i] = exynos_gem[i];
|
|
exynos_fb->dma_addr[i] = exynos_gem[i]->dma_addr
|
|
+ mode_cmd->offsets[i];
|
|
}
|
|
|
|
drm_helper_mode_fill_fb_struct(dev, &exynos_fb->fb, mode_cmd);
|
|
|
|
ret = drm_framebuffer_init(dev, &exynos_fb->fb, &exynos_drm_fb_funcs);
|
|
if (ret < 0) {
|
|
DRM_ERROR("failed to initialize framebuffer\n");
|
|
goto err;
|
|
}
|
|
|
|
return &exynos_fb->fb;
|
|
|
|
err:
|
|
kfree(exynos_fb);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
static struct drm_framebuffer *
|
|
exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
|
|
const struct drm_mode_fb_cmd2 *mode_cmd)
|
|
{
|
|
const struct drm_format_info *info = drm_get_format_info(dev, mode_cmd);
|
|
struct exynos_drm_gem *exynos_gem[MAX_FB_BUFFER];
|
|
struct drm_gem_object *obj;
|
|
struct drm_framebuffer *fb;
|
|
int i;
|
|
int ret;
|
|
|
|
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];
|
|
|
|
obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[i]);
|
|
if (!obj) {
|
|
DRM_ERROR("failed to lookup gem object\n");
|
|
ret = -ENOENT;
|
|
goto err;
|
|
}
|
|
|
|
exynos_gem[i] = to_exynos_gem(obj);
|
|
|
|
if (size > exynos_gem[i]->size) {
|
|
i++;
|
|
ret = -EINVAL;
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
fb = exynos_drm_framebuffer_init(dev, mode_cmd, exynos_gem, i);
|
|
if (IS_ERR(fb)) {
|
|
ret = PTR_ERR(fb);
|
|
goto err;
|
|
}
|
|
|
|
return fb;
|
|
|
|
err:
|
|
while (i--)
|
|
drm_gem_object_unreference_unlocked(&exynos_gem[i]->base);
|
|
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
dma_addr_t exynos_drm_fb_dma_addr(struct drm_framebuffer *fb, int index)
|
|
{
|
|
struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb);
|
|
|
|
if (WARN_ON_ONCE(index >= MAX_FB_BUFFER))
|
|
return 0;
|
|
|
|
return exynos_fb->dma_addr[index];
|
|
}
|
|
|
|
static struct drm_mode_config_helper_funcs exynos_drm_mode_config_helpers = {
|
|
.atomic_commit_tail = drm_atomic_helper_commit_tail_rpm,
|
|
};
|
|
|
|
static const struct drm_mode_config_funcs exynos_drm_mode_config_funcs = {
|
|
.fb_create = exynos_user_fb_create,
|
|
.output_poll_changed = drm_fb_helper_output_poll_changed,
|
|
.atomic_check = exynos_atomic_check,
|
|
.atomic_commit = drm_atomic_helper_commit,
|
|
};
|
|
|
|
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;
|
|
dev->mode_config.helper_private = &exynos_drm_mode_config_helpers;
|
|
|
|
dev->mode_config.allow_fb_modifiers = true;
|
|
}
|