![Seung-Woo Kim](/assets/img/avatar_default.png)
These formats(NV12M, NV12MT and YUV420M) have non contiguous multi planes, so each plane uses different buffer. The exynos drm should support multi buffer for them. Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com> Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
491 lines
12 KiB
C
491 lines
12 KiB
C
/* exynos_drm_fbdev.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>
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#include "drmP.h"
|
|
#include "drm_crtc.h"
|
|
#include "drm_fb_helper.h"
|
|
#include "drm_crtc_helper.h"
|
|
|
|
#include "exynos_drm_drv.h"
|
|
#include "exynos_drm_fb.h"
|
|
#include "exynos_drm_gem.h"
|
|
|
|
#define MAX_CONNECTOR 4
|
|
#define PREFERRED_BPP 32
|
|
|
|
#define to_exynos_fbdev(x) container_of(x, struct exynos_drm_fbdev,\
|
|
drm_fb_helper)
|
|
|
|
struct exynos_drm_fbdev {
|
|
struct drm_fb_helper drm_fb_helper;
|
|
struct exynos_drm_gem_obj *exynos_gem_obj;
|
|
};
|
|
|
|
static int exynos_drm_fbdev_set_par(struct fb_info *info)
|
|
{
|
|
struct fb_var_screeninfo *var = &info->var;
|
|
|
|
switch (var->bits_per_pixel) {
|
|
case 32:
|
|
case 24:
|
|
case 18:
|
|
case 16:
|
|
case 12:
|
|
info->fix.visual = FB_VISUAL_TRUECOLOR;
|
|
break;
|
|
case 1:
|
|
info->fix.visual = FB_VISUAL_MONO01;
|
|
break;
|
|
default:
|
|
info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
|
|
break;
|
|
}
|
|
|
|
info->fix.line_length = (var->xres_virtual * var->bits_per_pixel) / 8;
|
|
|
|
return drm_fb_helper_set_par(info);
|
|
}
|
|
|
|
|
|
static struct fb_ops exynos_drm_fb_ops = {
|
|
.owner = THIS_MODULE,
|
|
.fb_fillrect = cfb_fillrect,
|
|
.fb_copyarea = cfb_copyarea,
|
|
.fb_imageblit = cfb_imageblit,
|
|
.fb_check_var = drm_fb_helper_check_var,
|
|
.fb_set_par = exynos_drm_fbdev_set_par,
|
|
.fb_blank = drm_fb_helper_blank,
|
|
.fb_pan_display = drm_fb_helper_pan_display,
|
|
.fb_setcmap = drm_fb_helper_setcmap,
|
|
};
|
|
|
|
static int exynos_drm_fbdev_update(struct drm_fb_helper *helper,
|
|
struct drm_framebuffer *fb)
|
|
{
|
|
struct fb_info *fbi = helper->fbdev;
|
|
struct drm_device *dev = helper->dev;
|
|
struct exynos_drm_gem_buf *buffer;
|
|
unsigned int size = fb->width * fb->height * (fb->bits_per_pixel >> 3);
|
|
unsigned long offset;
|
|
|
|
DRM_DEBUG_KMS("%s\n", __FILE__);
|
|
|
|
drm_fb_helper_fill_fix(fbi, fb->pitches[0], fb->depth);
|
|
drm_fb_helper_fill_var(fbi, helper, fb->width, fb->height);
|
|
|
|
/* RGB formats use only one buffer */
|
|
buffer = exynos_drm_fb_buffer(fb, 0);
|
|
if (!buffer) {
|
|
DRM_LOG_KMS("buffer is null.\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
offset = fbi->var.xoffset * (fb->bits_per_pixel >> 3);
|
|
offset += fbi->var.yoffset * fb->pitches[0];
|
|
|
|
dev->mode_config.fb_base = (resource_size_t)buffer->dma_addr;
|
|
fbi->screen_base = buffer->kvaddr + offset;
|
|
fbi->fix.smem_start = (unsigned long)(buffer->dma_addr + offset);
|
|
fbi->screen_size = size;
|
|
fbi->fix.smem_len = size;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int exynos_drm_fbdev_create(struct drm_fb_helper *helper,
|
|
struct drm_fb_helper_surface_size *sizes)
|
|
{
|
|
struct exynos_drm_fbdev *exynos_fbdev = to_exynos_fbdev(helper);
|
|
struct exynos_drm_gem_obj *exynos_gem_obj;
|
|
struct drm_device *dev = helper->dev;
|
|
struct fb_info *fbi;
|
|
struct drm_mode_fb_cmd2 mode_cmd = { 0 };
|
|
struct platform_device *pdev = dev->platformdev;
|
|
unsigned long size;
|
|
int ret;
|
|
|
|
DRM_DEBUG_KMS("%s\n", __FILE__);
|
|
|
|
DRM_DEBUG_KMS("surface width(%d), height(%d) and bpp(%d\n",
|
|
sizes->surface_width, sizes->surface_height,
|
|
sizes->surface_bpp);
|
|
|
|
mode_cmd.width = sizes->surface_width;
|
|
mode_cmd.height = sizes->surface_height;
|
|
mode_cmd.pitches[0] = sizes->surface_width * (sizes->surface_bpp >> 3);
|
|
mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
|
|
sizes->surface_depth);
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
|
|
fbi = framebuffer_alloc(0, &pdev->dev);
|
|
if (!fbi) {
|
|
DRM_ERROR("failed to allocate fb info.\n");
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
size = mode_cmd.pitches[0] * mode_cmd.height;
|
|
exynos_gem_obj = exynos_drm_gem_create(dev, size);
|
|
if (IS_ERR(exynos_gem_obj)) {
|
|
ret = PTR_ERR(exynos_gem_obj);
|
|
goto out;
|
|
}
|
|
|
|
exynos_fbdev->exynos_gem_obj = exynos_gem_obj;
|
|
|
|
helper->fb = exynos_drm_framebuffer_init(dev, &mode_cmd,
|
|
&exynos_gem_obj->base);
|
|
if (IS_ERR_OR_NULL(helper->fb)) {
|
|
DRM_ERROR("failed to create drm framebuffer.\n");
|
|
ret = PTR_ERR(helper->fb);
|
|
goto out;
|
|
}
|
|
|
|
helper->fbdev = fbi;
|
|
|
|
fbi->par = helper;
|
|
fbi->flags = FBINFO_FLAG_DEFAULT;
|
|
fbi->fbops = &exynos_drm_fb_ops;
|
|
|
|
ret = fb_alloc_cmap(&fbi->cmap, 256, 0);
|
|
if (ret) {
|
|
DRM_ERROR("failed to allocate cmap.\n");
|
|
goto out;
|
|
}
|
|
|
|
ret = exynos_drm_fbdev_update(helper, helper->fb);
|
|
if (ret < 0) {
|
|
fb_dealloc_cmap(&fbi->cmap);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* if failed, all resources allocated above would be released by
|
|
* drm_mode_config_cleanup() when drm_load() had been called prior
|
|
* to any specific driver such as fimd or hdmi driver.
|
|
*/
|
|
out:
|
|
mutex_unlock(&dev->struct_mutex);
|
|
return ret;
|
|
}
|
|
|
|
static bool
|
|
exynos_drm_fbdev_is_samefb(struct drm_framebuffer *fb,
|
|
struct drm_fb_helper_surface_size *sizes)
|
|
{
|
|
if (fb->width != sizes->surface_width)
|
|
return false;
|
|
if (fb->height != sizes->surface_height)
|
|
return false;
|
|
if (fb->bits_per_pixel != sizes->surface_bpp)
|
|
return false;
|
|
if (fb->depth != sizes->surface_depth)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
static int exynos_drm_fbdev_recreate(struct drm_fb_helper *helper,
|
|
struct drm_fb_helper_surface_size *sizes)
|
|
{
|
|
struct drm_device *dev = helper->dev;
|
|
struct exynos_drm_fbdev *exynos_fbdev = to_exynos_fbdev(helper);
|
|
struct exynos_drm_gem_obj *exynos_gem_obj;
|
|
struct drm_framebuffer *fb = helper->fb;
|
|
struct drm_mode_fb_cmd2 mode_cmd = { 0 };
|
|
unsigned long size;
|
|
|
|
DRM_DEBUG_KMS("%s\n", __FILE__);
|
|
|
|
if (exynos_drm_fbdev_is_samefb(fb, sizes))
|
|
return 0;
|
|
|
|
mode_cmd.width = sizes->surface_width;
|
|
mode_cmd.height = sizes->surface_height;
|
|
mode_cmd.pitches[0] = sizes->surface_width * (sizes->surface_bpp >> 3);
|
|
mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
|
|
sizes->surface_depth);
|
|
|
|
if (exynos_fbdev->exynos_gem_obj)
|
|
exynos_drm_gem_destroy(exynos_fbdev->exynos_gem_obj);
|
|
|
|
if (fb->funcs->destroy)
|
|
fb->funcs->destroy(fb);
|
|
|
|
size = mode_cmd.pitches[0] * mode_cmd.height;
|
|
exynos_gem_obj = exynos_drm_gem_create(dev, size);
|
|
if (IS_ERR(exynos_gem_obj))
|
|
return PTR_ERR(exynos_gem_obj);
|
|
|
|
exynos_fbdev->exynos_gem_obj = exynos_gem_obj;
|
|
|
|
helper->fb = exynos_drm_framebuffer_init(dev, &mode_cmd,
|
|
&exynos_gem_obj->base);
|
|
if (IS_ERR_OR_NULL(helper->fb)) {
|
|
DRM_ERROR("failed to create drm framebuffer.\n");
|
|
return PTR_ERR(helper->fb);
|
|
}
|
|
|
|
return exynos_drm_fbdev_update(helper, helper->fb);
|
|
}
|
|
|
|
static int exynos_drm_fbdev_probe(struct drm_fb_helper *helper,
|
|
struct drm_fb_helper_surface_size *sizes)
|
|
{
|
|
int ret = 0;
|
|
|
|
DRM_DEBUG_KMS("%s\n", __FILE__);
|
|
|
|
if (!helper->fb) {
|
|
ret = exynos_drm_fbdev_create(helper, sizes);
|
|
if (ret < 0) {
|
|
DRM_ERROR("failed to create fbdev.\n");
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* fb_helper expects a value more than 1 if succeed
|
|
* because register_framebuffer() should be called.
|
|
*/
|
|
ret = 1;
|
|
} else {
|
|
ret = exynos_drm_fbdev_recreate(helper, sizes);
|
|
if (ret < 0) {
|
|
DRM_ERROR("failed to reconfigure fbdev\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct drm_fb_helper_funcs exynos_drm_fb_helper_funcs = {
|
|
.fb_probe = exynos_drm_fbdev_probe,
|
|
};
|
|
|
|
int exynos_drm_fbdev_init(struct drm_device *dev)
|
|
{
|
|
struct exynos_drm_fbdev *fbdev;
|
|
struct exynos_drm_private *private = dev->dev_private;
|
|
struct drm_fb_helper *helper;
|
|
unsigned int num_crtc;
|
|
int ret;
|
|
|
|
DRM_DEBUG_KMS("%s\n", __FILE__);
|
|
|
|
if (!dev->mode_config.num_crtc || !dev->mode_config.num_connector)
|
|
return 0;
|
|
|
|
fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
|
|
if (!fbdev) {
|
|
DRM_ERROR("failed to allocate drm fbdev.\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
private->fb_helper = helper = &fbdev->drm_fb_helper;
|
|
helper->funcs = &exynos_drm_fb_helper_funcs;
|
|
|
|
num_crtc = dev->mode_config.num_crtc;
|
|
|
|
ret = drm_fb_helper_init(dev, helper, num_crtc, MAX_CONNECTOR);
|
|
if (ret < 0) {
|
|
DRM_ERROR("failed to initialize drm fb helper.\n");
|
|
goto err_init;
|
|
}
|
|
|
|
ret = drm_fb_helper_single_add_all_connectors(helper);
|
|
if (ret < 0) {
|
|
DRM_ERROR("failed to register drm_fb_helper_connector.\n");
|
|
goto err_setup;
|
|
|
|
}
|
|
|
|
ret = drm_fb_helper_initial_config(helper, PREFERRED_BPP);
|
|
if (ret < 0) {
|
|
DRM_ERROR("failed to set up hw configuration.\n");
|
|
goto err_setup;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_setup:
|
|
drm_fb_helper_fini(helper);
|
|
|
|
err_init:
|
|
private->fb_helper = NULL;
|
|
kfree(fbdev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void exynos_drm_fbdev_destroy(struct drm_device *dev,
|
|
struct drm_fb_helper *fb_helper)
|
|
{
|
|
struct drm_framebuffer *fb;
|
|
|
|
/* release drm framebuffer and real buffer */
|
|
if (fb_helper->fb && fb_helper->fb->funcs) {
|
|
fb = fb_helper->fb;
|
|
if (fb && fb->funcs->destroy)
|
|
fb->funcs->destroy(fb);
|
|
}
|
|
|
|
/* release linux framebuffer */
|
|
if (fb_helper->fbdev) {
|
|
struct fb_info *info;
|
|
int ret;
|
|
|
|
info = fb_helper->fbdev;
|
|
ret = unregister_framebuffer(info);
|
|
if (ret < 0)
|
|
DRM_DEBUG_KMS("failed unregister_framebuffer()\n");
|
|
|
|
if (info->cmap.len)
|
|
fb_dealloc_cmap(&info->cmap);
|
|
|
|
framebuffer_release(info);
|
|
}
|
|
|
|
drm_fb_helper_fini(fb_helper);
|
|
}
|
|
|
|
void exynos_drm_fbdev_fini(struct drm_device *dev)
|
|
{
|
|
struct exynos_drm_private *private = dev->dev_private;
|
|
struct exynos_drm_fbdev *fbdev;
|
|
|
|
if (!private || !private->fb_helper)
|
|
return;
|
|
|
|
fbdev = to_exynos_fbdev(private->fb_helper);
|
|
|
|
if (fbdev->exynos_gem_obj)
|
|
exynos_drm_gem_destroy(fbdev->exynos_gem_obj);
|
|
|
|
exynos_drm_fbdev_destroy(dev, private->fb_helper);
|
|
kfree(fbdev);
|
|
private->fb_helper = NULL;
|
|
}
|
|
|
|
void exynos_drm_fbdev_restore_mode(struct drm_device *dev)
|
|
{
|
|
struct exynos_drm_private *private = dev->dev_private;
|
|
|
|
if (!private || !private->fb_helper)
|
|
return;
|
|
|
|
drm_fb_helper_restore_fbdev_mode(private->fb_helper);
|
|
}
|
|
|
|
int exynos_drm_fbdev_reinit(struct drm_device *dev)
|
|
{
|
|
struct exynos_drm_private *private = dev->dev_private;
|
|
struct drm_fb_helper *fb_helper;
|
|
int ret;
|
|
|
|
if (!private)
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* if all sub drivers were unloaded then num_connector is 0
|
|
* so at this time, the framebuffers also should be destroyed.
|
|
*/
|
|
if (!dev->mode_config.num_connector) {
|
|
exynos_drm_fbdev_fini(dev);
|
|
return 0;
|
|
}
|
|
|
|
fb_helper = private->fb_helper;
|
|
|
|
if (fb_helper) {
|
|
struct list_head temp_list;
|
|
|
|
INIT_LIST_HEAD(&temp_list);
|
|
|
|
/*
|
|
* fb_helper is reintialized but kernel fb is reused
|
|
* so kernel_fb_list need to be backuped and restored
|
|
*/
|
|
if (!list_empty(&fb_helper->kernel_fb_list))
|
|
list_replace_init(&fb_helper->kernel_fb_list,
|
|
&temp_list);
|
|
|
|
drm_fb_helper_fini(fb_helper);
|
|
|
|
ret = drm_fb_helper_init(dev, fb_helper,
|
|
dev->mode_config.num_crtc, MAX_CONNECTOR);
|
|
if (ret < 0) {
|
|
DRM_ERROR("failed to initialize drm fb helper\n");
|
|
return ret;
|
|
}
|
|
|
|
if (!list_empty(&temp_list))
|
|
list_replace(&temp_list, &fb_helper->kernel_fb_list);
|
|
|
|
ret = drm_fb_helper_single_add_all_connectors(fb_helper);
|
|
if (ret < 0) {
|
|
DRM_ERROR("failed to add fb helper to connectors\n");
|
|
goto err;
|
|
}
|
|
|
|
ret = drm_fb_helper_initial_config(fb_helper, PREFERRED_BPP);
|
|
if (ret < 0) {
|
|
DRM_ERROR("failed to set up hw configuration.\n");
|
|
goto err;
|
|
}
|
|
} else {
|
|
/*
|
|
* if drm_load() failed whem drm load() was called prior
|
|
* to specific drivers, fb_helper must be NULL and so
|
|
* this fuction should be called again to re-initialize and
|
|
* re-configure the fb helper. it means that this function
|
|
* has been called by the specific drivers.
|
|
*/
|
|
ret = exynos_drm_fbdev_init(dev);
|
|
}
|
|
|
|
return ret;
|
|
|
|
err:
|
|
/*
|
|
* if drm_load() failed when drm load() was called prior
|
|
* to specific drivers, the fb_helper must be NULL and so check it.
|
|
*/
|
|
if (fb_helper)
|
|
drm_fb_helper_fini(fb_helper);
|
|
|
|
return ret;
|
|
}
|
|
|
|
MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
|
|
MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
|
|
MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
|
|
MODULE_DESCRIPTION("Samsung SoC DRM FBDEV Driver");
|
|
MODULE_LICENSE("GPL");
|