* Kill ->fb_rotate?
@ 2016-01-20 21:16 Rasmus Villemoes
2016-02-09 18:56 ` [PATCH] fbdev: kill fb_rotate Rasmus Villemoes
0 siblings, 1 reply; 3+ messages in thread
From: Rasmus Villemoes @ 2016-01-20 21:16 UTC (permalink / raw)
To: linux-fbdev
Hi,
it seems that the fb_rotate method in struct fb_ops is never actually
invoked, and it's been that way in the entire history of git (in fact,
the last occurrence of the string '->fb_rotate' vanished over 10 years
ago, with b4d8aea6d6). Is there any reason not to nuke the few dozen
lines of dead code in the few drivers that actually implement it and
reduce sizeof(struct fb_ops) by sizeof(void*)?
Rasmus
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH] fbdev: kill fb_rotate
2016-01-20 21:16 Kill ->fb_rotate? Rasmus Villemoes
@ 2016-02-09 18:56 ` Rasmus Villemoes
2016-02-26 11:30 ` Tomi Valkeinen
0 siblings, 1 reply; 3+ messages in thread
From: Rasmus Villemoes @ 2016-02-09 18:56 UTC (permalink / raw)
To: Jean-Christophe Plagniol-Villard, Tomi Valkeinen
Cc: Rasmus Villemoes, linux-fbdev, linux-kernel, linux-omap
The fb_rotate method in struct fb_ops is never actually invoked, and
it's been that way in the entire history of git (in fact, the last
occurrence of the string '->fb_rotate' vanished over 10 years ago,
with b4d8aea6d6, and that merely tested whether the callback
existed). So remove some dead code and make struct fb_obs a little
smaller.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
---
drivers/video/fbdev/atafb.c | 3 ---
drivers/video/fbdev/au1100fb.c | 22 ----------------------
drivers/video/fbdev/bf537-lq035.c | 23 -----------------------
drivers/video/fbdev/omap/omapfb_main.c | 22 ----------------------
drivers/video/fbdev/skeletonfb.c | 17 -----------------
include/linux/fb.h | 3 ---
6 files changed, 90 deletions(-)
diff --git a/drivers/video/fbdev/atafb.c b/drivers/video/fbdev/atafb.c
index d6ce613e12ad..fcd2dd670a65 100644
--- a/drivers/video/fbdev/atafb.c
+++ b/drivers/video/fbdev/atafb.c
@@ -313,9 +313,6 @@ extern unsigned char fontdata_8x16[];
* * Draws cursor *
* int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);
*
- * * Rotates the display *
- * void (*fb_rotate)(struct fb_info *info, int angle);
- *
* * wait for blit idle, optional *
* int (*fb_sync)(struct fb_info *info);
*
diff --git a/drivers/video/fbdev/au1100fb.c b/drivers/video/fbdev/au1100fb.c
index 59560189b24a..35df2c1a8a63 100644
--- a/drivers/video/fbdev/au1100fb.c
+++ b/drivers/video/fbdev/au1100fb.c
@@ -334,27 +334,6 @@ int au1100fb_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *fbi)
return 0;
}
-/* fb_rotate
- * Rotate the display of this angle. This doesn't seems to be used by the core,
- * but as our hardware supports it, so why not implementing it...
- */
-void au1100fb_fb_rotate(struct fb_info *fbi, int angle)
-{
- struct au1100fb_device *fbdev = to_au1100fb_device(fbi);
-
- print_dbg("fb_rotate %p %d", fbi, angle);
-
- if (fbdev && (angle > 0) && !(angle % 90)) {
-
- fbdev->regs->lcd_control &= ~LCD_CONTROL_GO;
-
- fbdev->regs->lcd_control &= ~(LCD_CONTROL_SM_MASK);
- fbdev->regs->lcd_control |= ((angle/90) << LCD_CONTROL_SM_BIT);
-
- fbdev->regs->lcd_control |= LCD_CONTROL_GO;
- }
-}
-
/* fb_mmap
* Map video memory in user space. We don't use the generic fb_mmap method mainly
* to allow the use of the TLB streaming flag (CCA=6)
@@ -380,7 +359,6 @@ static struct fb_ops au1100fb_ops .fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
- .fb_rotate = au1100fb_fb_rotate,
.fb_mmap = au1100fb_fb_mmap,
};
diff --git a/drivers/video/fbdev/bf537-lq035.c b/drivers/video/fbdev/bf537-lq035.c
index 7db3052b471d..ef29fb425122 100644
--- a/drivers/video/fbdev/bf537-lq035.c
+++ b/drivers/video/fbdev/bf537-lq035.c
@@ -554,28 +554,6 @@ static int bfin_lq035_fb_check_var(struct fb_var_screeninfo *var,
return 0;
}
-/* fb_rotate
- * Rotate the display of this angle. This doesn't seems to be used by the core,
- * but as our hardware supports it, so why not implementing it...
- */
-static void bfin_lq035_fb_rotate(struct fb_info *fbi, int angle)
-{
- pr_debug("%s: %p %d", __func__, fbi, angle);
-#if (defined(UD) && defined(LBR))
- switch (angle) {
-
- case 180:
- gpio_set_value(LBR, 0);
- gpio_set_value(UD, 1);
- break;
- default:
- gpio_set_value(LBR, 1);
- gpio_set_value(UD, 0);
- break;
- }
-#endif
-}
-
static int bfin_lq035_fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
{
if (nocursor)
@@ -623,7 +601,6 @@ static struct fb_ops bfin_lq035_fb_ops = {
.fb_open = bfin_lq035_fb_open,
.fb_release = bfin_lq035_fb_release,
.fb_check_var = bfin_lq035_fb_check_var,
- .fb_rotate = bfin_lq035_fb_rotate,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
diff --git a/drivers/video/fbdev/omap/omapfb_main.c b/drivers/video/fbdev/omap/omapfb_main.c
index 393ae1bc07e8..6429f33167f5 100644
--- a/drivers/video/fbdev/omap/omapfb_main.c
+++ b/drivers/video/fbdev/omap/omapfb_main.c
@@ -594,27 +594,6 @@ static int set_fb_var(struct fb_info *fbi,
}
-/* Set rotation (0, 90, 180, 270 degree), and switch to the new mode. */
-static void omapfb_rotate(struct fb_info *fbi, int rotate)
-{
- struct omapfb_plane_struct *plane = fbi->par;
- struct omapfb_device *fbdev = plane->fbdev;
-
- omapfb_rqueue_lock(fbdev);
- if (rotate != fbi->var.rotate) {
- struct fb_var_screeninfo *new_var = &fbdev->new_var;
-
- memcpy(new_var, &fbi->var, sizeof(*new_var));
- new_var->rotate = rotate;
- if (set_fb_var(fbi, new_var) = 0 &&
- memcmp(new_var, &fbi->var, sizeof(*new_var))) {
- memcpy(&fbi->var, new_var, sizeof(*new_var));
- ctrl_change_mode(fbi);
- }
- }
- omapfb_rqueue_unlock(fbdev);
-}
-
/*
* Set new x,y offsets in the virtual display for the visible area and switch
* to the new mode.
@@ -1256,7 +1235,6 @@ static struct fb_ops omapfb_ops = {
.fb_ioctl = omapfb_ioctl,
.fb_check_var = omapfb_check_var,
.fb_set_par = omapfb_set_par,
- .fb_rotate = omapfb_rotate,
.fb_pan_display = omapfb_pan_display,
};
diff --git a/drivers/video/fbdev/skeletonfb.c b/drivers/video/fbdev/skeletonfb.c
index fefde7c6add7..f948baa16d82 100644
--- a/drivers/video/fbdev/skeletonfb.c
+++ b/drivers/video/fbdev/skeletonfb.c
@@ -614,22 +614,6 @@ int xxxfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
}
/**
- * xxxfb_rotate - NOT a required function. If your hardware
- * supports rotation the whole screen then
- * you would provide a hook for this.
- *
- * @info: frame buffer structure that represents a single frame buffer
- * @angle: The angle we rotate the screen.
- *
- * This operation is used to set or alter the properities of the
- * cursor.
- */
-void xxxfb_rotate(struct fb_info *info, int angle)
-{
-/* Will be deprecated */
-}
-
-/**
* xxxfb_sync - NOT a required function. Normally the accel engine
* for a graphics card take a specific amount of time.
* Often we have to wait for the accelerator to finish
@@ -665,7 +649,6 @@ static struct fb_ops xxxfb_ops = {
.fb_copyarea = xxxfb_copyarea, /* Needed !!! */
.fb_imageblit = xxxfb_imageblit, /* Needed !!! */
.fb_cursor = xxxfb_cursor, /* Optional !!! */
- .fb_rotate = xxxfb_rotate,
.fb_sync = xxxfb_sync,
.fb_ioctl = xxxfb_ioctl,
.fb_mmap = xxxfb_mmap,
diff --git a/include/linux/fb.h b/include/linux/fb.h
index 55433f86f0a3..dfe88351341f 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -296,9 +296,6 @@ struct fb_ops {
/* Draws cursor */
int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);
- /* Rotates the display */
- void (*fb_rotate)(struct fb_info *info, int angle);
-
/* wait for blit idle, optional */
int (*fb_sync)(struct fb_info *info);
--
2.1.4
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] fbdev: kill fb_rotate
2016-02-09 18:56 ` [PATCH] fbdev: kill fb_rotate Rasmus Villemoes
@ 2016-02-26 11:30 ` Tomi Valkeinen
0 siblings, 0 replies; 3+ messages in thread
From: Tomi Valkeinen @ 2016-02-26 11:30 UTC (permalink / raw)
To: Rasmus Villemoes, Jean-Christophe Plagniol-Villard
Cc: linux-fbdev, linux-kernel, linux-omap
[-- Attachment #1.1: Type: text/plain, Size: 934 bytes --]
On 09/02/16 20:56, Rasmus Villemoes wrote:
> The fb_rotate method in struct fb_ops is never actually invoked, and
> it's been that way in the entire history of git (in fact, the last
> occurrence of the string '->fb_rotate' vanished over 10 years ago,
> with b4d8aea6d6, and that merely tested whether the callback
> existed). So remove some dead code and make struct fb_obs a little
> smaller.
>
> Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
> ---
> drivers/video/fbdev/atafb.c | 3 ---
> drivers/video/fbdev/au1100fb.c | 22 ----------------------
> drivers/video/fbdev/bf537-lq035.c | 23 -----------------------
> drivers/video/fbdev/omap/omapfb_main.c | 22 ----------------------
> drivers/video/fbdev/skeletonfb.c | 17 -----------------
> include/linux/fb.h | 3 ---
> 6 files changed, 90 deletions(-)
Thanks, queued for 4.6.
Tomi
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2016-01-20 21:16 Kill ->fb_rotate? Rasmus Villemoes
2016-02-09 18:56 ` [PATCH] fbdev: kill fb_rotate Rasmus Villemoes
2016-02-26 11:30 ` Tomi Valkeinen
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