* [PATCH] video: move CNVT_TOHW to a common place
@ 2012-08-08 12:06 Manjunathappa, Prakash
2012-08-08 17:02 ` Geert Uytterhoeven
2012-08-13 5:27 ` Manjunathappa, Prakash
0 siblings, 2 replies; 3+ messages in thread
From: Manjunathappa, Prakash @ 2012-08-08 12:06 UTC (permalink / raw)
To: linux-fbdev
Replace macro "CNVT_TOHW" by inline function. Also moving it to a
common place linux/fb.h so that it can be accessed from all framebuffer
drivers.
Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
---
Applies on top of fbdev tree[1].
[1] git://github.com/schandinat/linux-2.6.git fbdev-next
drivers/video/68328fb.c | 2 --
drivers/video/fb-puv3.c | 2 --
drivers/video/fsl-diu-fb.c | 5 -----
drivers/video/grvga.c | 6 ------
drivers/video/imxfb.c | 1 -
drivers/video/matrox/matroxfb_base.h | 2 --
drivers/video/pm2fb.c | 2 --
drivers/video/pm3fb.c | 2 --
drivers/video/skeletonfb.c | 2 --
drivers/video/tdfxfb.c | 3 ---
drivers/video/vfb.c | 2 --
drivers/video/xen-fbfront.c | 2 --
include/linux/fb.h | 5 +++++
13 files changed, 5 insertions(+), 31 deletions(-)
diff --git a/drivers/video/68328fb.c b/drivers/video/68328fb.c
index a425d65..5a1f360 100644
--- a/drivers/video/68328fb.c
+++ b/drivers/video/68328fb.c
@@ -318,7 +318,6 @@ static int mc68x328fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
* (blue << blue.offset) | (transp << transp.offset)
* RAMDAC does not exist
*/
-#define CNVT_TOHW(val,width) ((((val)<<(width))+0x7FFF-(val))>>16)
switch (info->fix.visual) {
case FB_VISUAL_TRUECOLOR:
case FB_VISUAL_PSEUDOCOLOR:
@@ -335,7 +334,6 @@ static int mc68x328fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
transp = CNVT_TOHW(transp, 8);
break;
}
-#undef CNVT_TOHW
/* Truecolor has hardware independent palette */
if (info->fix.visual = FB_VISUAL_TRUECOLOR) {
u32 v;
diff --git a/drivers/video/fb-puv3.c b/drivers/video/fb-puv3.c
index 60a787f..c84a907 100644
--- a/drivers/video/fb-puv3.c
+++ b/drivers/video/fb-puv3.c
@@ -565,7 +565,6 @@ static int unifb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
(red * 77 + green * 151 + blue * 28) >> 8;
}
-#define CNVT_TOHW(val, width) ((((val)<<(width))+0x7FFF-(val))>>16)
switch (info->fix.visual) {
case FB_VISUAL_TRUECOLOR:
case FB_VISUAL_PSEUDOCOLOR:
@@ -582,7 +581,6 @@ static int unifb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
transp = CNVT_TOHW(transp, 8);
break;
}
-#undef CNVT_TOHW
/* Truecolor has hardware independent palette */
if (info->fix.visual = FB_VISUAL_TRUECOLOR) {
u32 v;
diff --git a/drivers/video/fsl-diu-fb.c b/drivers/video/fsl-diu-fb.c
index 458c006..878c588 100644
--- a/drivers/video/fsl-diu-fb.c
+++ b/drivers/video/fsl-diu-fb.c
@@ -1008,11 +1008,6 @@ static int fsl_diu_set_par(struct fb_info *info)
return 0;
}
-static inline __u32 CNVT_TOHW(__u32 val, __u32 width)
-{
- return ((val << width) + 0x7FFF - val) >> 16;
-}
-
/*
* Set a single color register. The values supplied have a 16 bit magnitude
* which needs to be scaled in this function for the hardware. Things to take
diff --git a/drivers/video/grvga.c b/drivers/video/grvga.c
index 5245f9a..452038f 100644
--- a/drivers/video/grvga.c
+++ b/drivers/video/grvga.c
@@ -203,17 +203,11 @@ static int grvga_setcolreg(unsigned regno, unsigned red, unsigned green, unsigne
red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
}
-
-
-#define CNVT_TOHW(val, width) ((((val)<<(width))+0x7FFF-(val))>>16)
-
red = CNVT_TOHW(red, info->var.red.length);
green = CNVT_TOHW(green, info->var.green.length);
blue = CNVT_TOHW(blue, info->var.blue.length);
transp = CNVT_TOHW(transp, info->var.transp.length);
-#undef CNVT_TOHW
-
/* In PSEUDOCOLOR we use the hardware CLUT */
if (info->fix.visual = FB_VISUAL_PSEUDOCOLOR)
__raw_writel((regno << 24) | (red << 16) | (green << 8) | blue,
diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index caad368..b008fde 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -224,7 +224,6 @@ static int imxfb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue,
struct imxfb_info *fbi = info->par;
u_int val, ret = 1;
-#define CNVT_TOHW(val,width) ((((val)<<(width))+0x7FFF-(val))>>16)
if (regno < fbi->palette_size) {
val = (CNVT_TOHW(red, 4) << 8) |
(CNVT_TOHW(green,4) << 4) |
diff --git a/drivers/video/matrox/matroxfb_base.h b/drivers/video/matrox/matroxfb_base.h
index 11ed57b..ace1e12 100644
--- a/drivers/video/matrox/matroxfb_base.h
+++ b/drivers/video/matrox/matroxfb_base.h
@@ -116,8 +116,6 @@
#define MX_VISUAL_DIRECTCOLOR FB_VISUAL_TRUECOLOR
#define MX_VISUAL_PSEUDOCOLOR FB_VISUAL_PSEUDOCOLOR
-#define CNVT_TOHW(val,width) ((((val)<<(width))+0x7FFF-(val))>>16)
-
/* G-series and Mystique have (almost) same DAC */
#undef NEED_DAC1064
#if defined(CONFIG_FB_MATROX_MYSTIQUE) || defined(CONFIG_FB_MATROX_G)
diff --git a/drivers/video/pm2fb.c b/drivers/video/pm2fb.c
index df31a24..85e810c 100644
--- a/drivers/video/pm2fb.c
+++ b/drivers/video/pm2fb.c
@@ -908,7 +908,6 @@ static int pm2fb_setcolreg(unsigned regno, unsigned red, unsigned green,
* (blue << blue.offset) | (transp << transp.offset)
* RAMDAC does not exist
*/
-#define CNVT_TOHW(val, width) ((((val) << (width)) + 0x7FFF -(val)) >> 16)
switch (info->fix.visual) {
case FB_VISUAL_TRUECOLOR:
case FB_VISUAL_PSEUDOCOLOR:
@@ -927,7 +926,6 @@ static int pm2fb_setcolreg(unsigned regno, unsigned red, unsigned green,
transp = CNVT_TOHW(transp, 8);
break;
}
-#undef CNVT_TOHW
/* Truecolor has hardware independent palette */
if (info->fix.visual = FB_VISUAL_TRUECOLOR) {
u32 v;
diff --git a/drivers/video/pm3fb.c b/drivers/video/pm3fb.c
index 055e527..8cb30f8 100644
--- a/drivers/video/pm3fb.c
+++ b/drivers/video/pm3fb.c
@@ -1109,12 +1109,10 @@ static int pm3fb_setcolreg(unsigned regno, unsigned red, unsigned green,
* This is the point where the color is converted to something that
* is acceptable by the hardware.
*/
-#define CNVT_TOHW(val, width) ((((val) << (width)) + 0x7FFF - (val)) >> 16)
red = CNVT_TOHW(red, info->var.red.length);
green = CNVT_TOHW(green, info->var.green.length);
blue = CNVT_TOHW(blue, info->var.blue.length);
transp = CNVT_TOHW(transp, info->var.transp.length);
-#undef CNVT_TOHW
if (info->fix.visual = FB_VISUAL_TRUECOLOR ||
info->fix.visual = FB_VISUAL_DIRECTCOLOR) {
diff --git a/drivers/video/skeletonfb.c b/drivers/video/skeletonfb.c
index 5b6abc6..fbf8b75 100644
--- a/drivers/video/skeletonfb.c
+++ b/drivers/video/skeletonfb.c
@@ -359,12 +359,10 @@ static int xxxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
* This is the point where the color is converted to something that
* is acceptable by the hardware.
*/
-#define CNVT_TOHW(val,width) ((((val)<<(width))+0x7FFF-(val))>>16)
red = CNVT_TOHW(red, info->var.red.length);
green = CNVT_TOHW(green, info->var.green.length);
blue = CNVT_TOHW(blue, info->var.blue.length);
transp = CNVT_TOHW(transp, info->var.transp.length);
-#undef CNVT_TOHW
/*
* This is the point where the function feeds the color to the hardware
* palette after converting the colors to something acceptable by
diff --git a/drivers/video/tdfxfb.c b/drivers/video/tdfxfb.c
index e026724..2eb6c63 100644
--- a/drivers/video/tdfxfb.c
+++ b/drivers/video/tdfxfb.c
@@ -752,9 +752,6 @@ static int tdfxfb_set_par(struct fb_info *info)
return 0;
}
-/* A handy macro shamelessly pinched from matroxfb */
-#define CNVT_TOHW(val, width) ((((val) << (width)) + 0x7FFF - (val)) >> 16)
-
static int tdfxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
unsigned blue, unsigned transp,
struct fb_info *info)
diff --git a/drivers/video/vfb.c b/drivers/video/vfb.c
index 501a922..bec437c 100644
--- a/drivers/video/vfb.c
+++ b/drivers/video/vfb.c
@@ -335,7 +335,6 @@ static int vfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
* (blue << blue.offset) | (transp << transp.offset)
* RAMDAC does not exist
*/
-#define CNVT_TOHW(val,width) ((((val)<<(width))+0x7FFF-(val))>>16)
switch (info->fix.visual) {
case FB_VISUAL_TRUECOLOR:
case FB_VISUAL_PSEUDOCOLOR:
@@ -352,7 +351,6 @@ static int vfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
transp = CNVT_TOHW(transp, 8);
break;
}
-#undef CNVT_TOHW
/* Truecolor has hardware independent palette */
if (info->fix.visual = FB_VISUAL_TRUECOLOR) {
u32 v;
diff --git a/drivers/video/xen-fbfront.c b/drivers/video/xen-fbfront.c
index b7f5173..6896744 100644
--- a/drivers/video/xen-fbfront.c
+++ b/drivers/video/xen-fbfront.c
@@ -217,12 +217,10 @@ static int xenfb_setcolreg(unsigned regno, unsigned red, unsigned green,
if (regno > info->cmap.len)
return 1;
-#define CNVT_TOHW(val, width) ((((val)<<(width))+0x7FFF-(val))>>16)
red = CNVT_TOHW(red, info->var.red.length);
green = CNVT_TOHW(green, info->var.green.length);
blue = CNVT_TOHW(blue, info->var.blue.length);
transp = CNVT_TOHW(transp, info->var.transp.length);
-#undef CNVT_TOHW
v = (red << info->var.red.offset) |
(green << info->var.green.offset) |
diff --git a/include/linux/fb.h b/include/linux/fb.h
index ac3f1c6..8a2b3ca 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -397,6 +397,11 @@ struct fb_cursor {
struct fb_image image; /* Cursor image */
};
+static inline __u32 CNVT_TOHW(__u32 val, __u32 width)
+{
+ return ((val << width) + 0x7FFF - val) >> 16;
+}
+
#ifdef CONFIG_FB_BACKLIGHT
/* Settings for the generic backlight code */
#define FB_BACKLIGHT_LEVELS 128
--
1.7.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] video: move CNVT_TOHW to a common place
2012-08-08 12:06 [PATCH] video: move CNVT_TOHW to a common place Manjunathappa, Prakash
@ 2012-08-08 17:02 ` Geert Uytterhoeven
2012-08-13 5:27 ` Manjunathappa, Prakash
1 sibling, 0 replies; 3+ messages in thread
From: Geert Uytterhoeven @ 2012-08-08 17:02 UTC (permalink / raw)
To: linux-fbdev
On Wed, Aug 8, 2012 at 1:54 PM, Manjunathappa, Prakash
<prakash.pm@ti.com> wrote:
> --- a/include/linux/fb.h
> +++ b/include/linux/fb.h
> @@ -397,6 +397,11 @@ struct fb_cursor {
> struct fb_image image; /* Cursor image */
> };
>
> +static inline __u32 CNVT_TOHW(__u32 val, __u32 width)
"__u32" is a bit misleading, as "val" is actually an unsigned 16-bit value.
> +{
> + return ((val << width) + 0x7FFF - val) >> 16;
> +}
Also, if you move it to a public header, perhaps the function needs a more
descriptive name? What it does is remap a 16-bit value "val" onto a value with
"width" bits of resolution, where "width" must be smaller than 16.
"reduce_resolution()"?
Also, it can become more generic, not limiting to 16-bit input values.
The "0x7fff" part is "(1 << (width -1)) - 1". But I'm not sure it's
worth the effort
(are there places where this is needed?).
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply [flat|nested] 3+ messages in thread
* RE: [PATCH] video: move CNVT_TOHW to a common place
2012-08-08 12:06 [PATCH] video: move CNVT_TOHW to a common place Manjunathappa, Prakash
2012-08-08 17:02 ` Geert Uytterhoeven
@ 2012-08-13 5:27 ` Manjunathappa, Prakash
1 sibling, 0 replies; 3+ messages in thread
From: Manjunathappa, Prakash @ 2012-08-13 5:27 UTC (permalink / raw)
To: linux-fbdev
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^ permalink raw reply [flat|nested] 3+ messages in thread
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2012-08-08 12:06 [PATCH] video: move CNVT_TOHW to a common place Manjunathappa, Prakash
2012-08-08 17:02 ` Geert Uytterhoeven
2012-08-13 5:27 ` Manjunathappa, Prakash
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