diff options
| author | Helge Deller <deller@gmx.de> | 2022-02-02 14:55:31 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2022-02-02 15:16:26 +0100 |
| commit | a3f781a9d6114c1d1e01defb7aa234dec45d2a5f (patch) | |
| tree | 793b04ca3aa06e007ab561bbb14929aba2ae3266 /drivers/video/fbdev/core/fbcon_ud.c | |
| parent | 87ab9f6b7417349aa197a6c7098d4fdd4beebb74 (diff) | |
fbcon: Add option to enable legacy hardware acceleration
Add a config option CONFIG_FRAMEBUFFER_CONSOLE_LEGACY_ACCELERATION to
enable bitblt and fillrect hardware acceleration in the framebuffer
console. If disabled, such acceleration will not be used, even if it is
supported by the graphics hardware driver.
If you plan to use DRM as your main graphics output system, you should
disable this option since it will prevent compiling in code which isn't
used later on when DRM takes over.
For all other configurations, e.g. if none of your graphic cards support
DRM (yet), DRM isn't available for your architecture, or you can't be
sure that the graphic card in the target system will support DRM, you
most likely want to enable this option.
In the non-accelerated case (e.g. when DRM is used), the inlined
fb_scrollmode() function is hardcoded to return SCROLL_REDRAW and as such the
compiler is able to optimize much unneccesary code away.
In this v3 patch version I additionally changed the GETVYRES() and GETVXRES()
macros to take a pointer to the fbcon_display struct. This fixes the build when
console rotation is enabled and helps the compiler again to optimize out code.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # v5.10+
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220202135531.92183-4-deller@gmx.de
Diffstat (limited to 'drivers/video/fbdev/core/fbcon_ud.c')
| -rw-r--r-- | drivers/video/fbdev/core/fbcon_ud.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/video/fbdev/core/fbcon_ud.c b/drivers/video/fbdev/core/fbcon_ud.c index 8d5e66b1bdfb..23bc045769d0 100644 --- a/drivers/video/fbdev/core/fbcon_ud.c +++ b/drivers/video/fbdev/core/fbcon_ud.c @@ -50,8 +50,8 @@ static void ud_bmove(struct vc_data *vc, struct fb_info *info, int sy, { struct fbcon_ops *ops = info->fbcon_par; struct fb_copyarea area; - u32 vyres = GETVYRES(ops->p->scrollmode, info); - u32 vxres = GETVXRES(ops->p->scrollmode, info); + u32 vyres = GETVYRES(ops->p, info); + u32 vxres = GETVXRES(ops->p, info); area.sy = vyres - ((sy + height) * vc->vc_font.height); area.sx = vxres - ((sx + width) * vc->vc_font.width); @@ -69,8 +69,8 @@ static void ud_clear(struct vc_data *vc, struct fb_info *info, int sy, struct fbcon_ops *ops = info->fbcon_par; struct fb_fillrect region; int bgshift = (vc->vc_hi_font_mask) ? 13 : 12; - u32 vyres = GETVYRES(ops->p->scrollmode, info); - u32 vxres = GETVXRES(ops->p->scrollmode, info); + u32 vyres = GETVYRES(ops->p, info); + u32 vxres = GETVXRES(ops->p, info); region.color = attr_bgcol_ec(bgshift,vc,info); region.dy = vyres - ((sy + height) * vc->vc_font.height); @@ -162,8 +162,8 @@ static void ud_putcs(struct vc_data *vc, struct fb_info *info, u32 mod = vc->vc_font.width % 8, cnt, pitch, size; u32 attribute = get_attribute(info, scr_readw(s)); u8 *dst, *buf = NULL; - u32 vyres = GETVYRES(ops->p->scrollmode, info); - u32 vxres = GETVXRES(ops->p->scrollmode, info); + u32 vyres = GETVYRES(ops->p, info); + u32 vxres = GETVXRES(ops->p, info); if (!ops->fontbuffer) return; @@ -259,8 +259,8 @@ static void ud_cursor(struct vc_data *vc, struct fb_info *info, int mode, int attribute, use_sw = vc->vc_cursor_type & CUR_SW; int err = 1, dx, dy; char *src; - u32 vyres = GETVYRES(ops->p->scrollmode, info); - u32 vxres = GETVXRES(ops->p->scrollmode, info); + u32 vyres = GETVYRES(ops->p, info); + u32 vxres = GETVXRES(ops->p, info); if (!ops->fontbuffer) return; @@ -410,8 +410,8 @@ static int ud_update_start(struct fb_info *info) { struct fbcon_ops *ops = info->fbcon_par; int xoffset, yoffset; - u32 vyres = GETVYRES(ops->p->scrollmode, info); - u32 vxres = GETVXRES(ops->p->scrollmode, info); + u32 vyres = GETVYRES(ops->p, info); + u32 vxres = GETVXRES(ops->p, info); int err; xoffset = vxres - info->var.xres - ops->var.xoffset; |