Commit 742547b7 authored by Archit Taneja's avatar Archit Taneja Committed by Daniel Vetter

drm/fb_helper: Create wrappers for blit, copyarea and fillrect funcs

drm drivers that emulate fbdev populate their fb_fillrect, fb_copyarea
and fb_imageblit fb_ops with the help of cfb_* or sys_* fbdev core
helper functions.

Create drm_fb_helper functions that wrap around these calls.

This is part of an effort to prevent drm drivers from calling fbdev
functions directly, in order to make fbdev emulation a top level drm
option.

v3:
- Fixed kerneldoc errors

v2:
- Added kerneldocs
- Follow the drm way of aligning of arguments in func definitions
- Remove unnecessary checks for non NULL fb_info
Signed-off-by: default avatarArchit Taneja <architt@codeaurora.org>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent cbb1a82e
...@@ -38,6 +38,12 @@ config DRM_KMS_FB_HELPER ...@@ -38,6 +38,12 @@ config DRM_KMS_FB_HELPER
select FRAMEBUFFER_CONSOLE if !EXPERT select FRAMEBUFFER_CONSOLE if !EXPERT
select FRAMEBUFFER_CONSOLE_DETECT_PRIMARY if FRAMEBUFFER_CONSOLE select FRAMEBUFFER_CONSOLE_DETECT_PRIMARY if FRAMEBUFFER_CONSOLE
select FB_SYS_FOPS select FB_SYS_FOPS
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT
help help
FBDEV helpers for KMS drivers. FBDEV helpers for KMS drivers.
......
...@@ -793,6 +793,90 @@ ssize_t drm_fb_helper_sys_write(struct fb_info *info, const char __user *buf, ...@@ -793,6 +793,90 @@ ssize_t drm_fb_helper_sys_write(struct fb_info *info, const char __user *buf,
} }
EXPORT_SYMBOL(drm_fb_helper_sys_write); EXPORT_SYMBOL(drm_fb_helper_sys_write);
/**
* drm_fb_helper_sys_fillrect - wrapper around sys_fillrect
* @info: fbdev registered by the helper
* @rect: info about rectangle to fill
*
* A wrapper around sys_fillrect implemented by fbdev core
*/
void drm_fb_helper_sys_fillrect(struct fb_info *info,
const struct fb_fillrect *rect)
{
sys_fillrect(info, rect);
}
EXPORT_SYMBOL(drm_fb_helper_sys_fillrect);
/**
* drm_fb_helper_sys_copyarea - wrapper around sys_copyarea
* @info: fbdev registered by the helper
* @area: info about area to copy
*
* A wrapper around sys_copyarea implemented by fbdev core
*/
void drm_fb_helper_sys_copyarea(struct fb_info *info,
const struct fb_copyarea *area)
{
sys_copyarea(info, area);
}
EXPORT_SYMBOL(drm_fb_helper_sys_copyarea);
/**
* drm_fb_helper_sys_imageblit - wrapper around sys_imageblit
* @info: fbdev registered by the helper
* @image: info about image to blit
*
* A wrapper around sys_imageblit implemented by fbdev core
*/
void drm_fb_helper_sys_imageblit(struct fb_info *info,
const struct fb_image *image)
{
sys_imageblit(info, image);
}
EXPORT_SYMBOL(drm_fb_helper_sys_imageblit);
/**
* drm_fb_helper_cfb_fillrect - wrapper around cfb_fillrect
* @info: fbdev registered by the helper
* @rect: info about rectangle to fill
*
* A wrapper around cfb_imageblit implemented by fbdev core
*/
void drm_fb_helper_cfb_fillrect(struct fb_info *info,
const struct fb_fillrect *rect)
{
cfb_fillrect(info, rect);
}
EXPORT_SYMBOL(drm_fb_helper_cfb_fillrect);
/**
* drm_fb_helper_cfb_copyarea - wrapper around cfb_copyarea
* @info: fbdev registered by the helper
* @area: info about area to copy
*
* A wrapper around cfb_copyarea implemented by fbdev core
*/
void drm_fb_helper_cfb_copyarea(struct fb_info *info,
const struct fb_copyarea *area)
{
cfb_copyarea(info, area);
}
EXPORT_SYMBOL(drm_fb_helper_cfb_copyarea);
/**
* drm_fb_helper_cfb_imageblit - wrapper around cfb_imageblit
* @info: fbdev registered by the helper
* @image: info about image to blit
*
* A wrapper around cfb_imageblit implemented by fbdev core
*/
void drm_fb_helper_cfb_imageblit(struct fb_info *info,
const struct fb_image *image)
{
cfb_imageblit(info, image);
}
EXPORT_SYMBOL(drm_fb_helper_cfb_imageblit);
static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green,
u16 blue, u16 regno, struct fb_info *info) u16 blue, u16 regno, struct fb_info *info)
{ {
......
...@@ -152,6 +152,20 @@ ssize_t drm_fb_helper_sys_read(struct fb_info *info, char __user *buf, ...@@ -152,6 +152,20 @@ ssize_t drm_fb_helper_sys_read(struct fb_info *info, char __user *buf,
ssize_t drm_fb_helper_sys_write(struct fb_info *info, const char __user *buf, ssize_t drm_fb_helper_sys_write(struct fb_info *info, const char __user *buf,
size_t count, loff_t *ppos); size_t count, loff_t *ppos);
void drm_fb_helper_sys_fillrect(struct fb_info *info,
const struct fb_fillrect *rect);
void drm_fb_helper_sys_copyarea(struct fb_info *info,
const struct fb_copyarea *area);
void drm_fb_helper_sys_imageblit(struct fb_info *info,
const struct fb_image *image);
void drm_fb_helper_cfb_fillrect(struct fb_info *info,
const struct fb_fillrect *rect);
void drm_fb_helper_cfb_copyarea(struct fb_info *info,
const struct fb_copyarea *area);
void drm_fb_helper_cfb_imageblit(struct fb_info *info,
const struct fb_image *image);
int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info); int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper); int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);
......
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