void-packages/srcpkgs/fbset/patches/add-support-for-custom-sync-flags.patch

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>From cb00e6fade39afdb2adb0727647e9c97ce0fd02c Mon Sep 17 00:00:00 2001
From: David Kozub <zub@linux.fjfi.cvut.cz>
Date: Thu, 7 Jun 2012 15:46:16 +0200
Subject: [PATCH] add support for custom sync flags
---
fb.modes.5 | 3 +++
fbset.8 | 4 ++++
fbset.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
fbset.h | 3 +++
modes.l | 3 ++-
modes.y | 10 +++++++++-
6 files changed, 66 insertions(+), 2 deletions(-)
--- a/fb.modes.5
+++ b/fb.modes.5
@@ -120,6 +120,9 @@ generated by the frame buffer device and
instead. Note that this option may not be supported by every frame buffer
device
.TP
+.IR \fBsync "\ <" number >
+custom sync flags (frame buffer driver dependent)
+.TP
.IR \fBlaced "\ {" false | true }
enable or disable interlace. If enabled the display will be split in two
frames, each frame contains only even and odd lines respectively. These two
--- a/fbset.8
+++ b/fbset.8
@@ -191,6 +191,10 @@ generated by the frame buffer device and
instead. Note that this option may not be supported by every frame buffer
device
.TP
+.IR \fB\-sync "\ <" \fIvalue >
+set custom sync flags. If specified, this value is bitwise or-ed to the
+other sync flags. This is useful for drivers that use custom sync flags
+.TP
.IR \fB\-bcast "\ {" false | true }
enable or disable broadcast modes. If enabled the frame buffer generates the
exact timings for several broadcast modes (e.g. PAL or NTSC). Note that
--- a/fbset.c
+++ b/fbset.c
@@ -16,6 +16,9 @@
* Brad Midgley <brad@exodus.pht.com>:
* -match
*
+ * David Kozub <zub@linux.fjfi.cvut.cz>:
+ * -sync
+ *
*/
@@ -52,6 +55,12 @@ struct inode;
/*
+ * Mask to zero-out all known sync flags
+ */
+#define FB_CUSTOM_SYNC_MASK ~(FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT| \
+ FB_SYNC_COMP_HIGH_ACT|FB_SYNC_ON_GREEN|FB_SYNC_EXT|FB_SYNC_BROADCAST)
+
+ /*
* Command Line Options
*/
@@ -86,6 +95,7 @@ static const char *Opt_vsync = NULL;
static const char *Opt_csync = NULL;
static const char *Opt_gsync = NULL;
static const char *Opt_extsync = NULL;
+static const char *Opt_sync = NULL;
static const char *Opt_bcast = NULL;
static const char *Opt_laced = NULL;
static const char *Opt_double = NULL;
@@ -123,6 +133,7 @@ static struct {
{ "-csync", &Opt_csync, 1 },
{ "-gsync", &Opt_gsync, 1 },
{ "-extsync", &Opt_extsync, 1 },
+ { "-sync", &Opt_sync, 1 },
{ "-bcast", &Opt_bcast, 1 },
{ "-laced", &Opt_laced, 1 },
{ "-double", &Opt_double, 1 },
@@ -402,6 +413,7 @@ static void ConvertFromVideoMode(const s
var->sync |= FB_SYNC_EXT;
if (vmode->bcast == TRUE)
var->sync |= FB_SYNC_BROADCAST;
+ var->sync |= vmode->sync;
if (vmode->laced == TRUE)
var->vmode = FB_VMODE_INTERLACED;
else if (vmode->dblscan == TRUE)
@@ -445,6 +457,7 @@ static void ConvertToVideoMode(const str
vmode->gsync = var->sync & FB_SYNC_ON_GREEN ? TRUE : FALSE;
vmode->extsync = var->sync & FB_SYNC_EXT ? TRUE : FALSE;
vmode->bcast = var->sync & FB_SYNC_BROADCAST ? TRUE : FALSE;
+ vmode->sync = var->sync & FB_CUSTOM_SYNC_MASK;
vmode->grayscale = var->grayscale;
vmode->laced = FALSE;
vmode->dblscan = FALSE;
@@ -554,6 +567,27 @@ void makeRGBA(struct VideoMode *vmode, c
}
/*
+ * Take known bits from sync and set appropriate flags instead
+ */
+
+void fixCustomSync(struct VideoMode *vmode)
+{
+ if (vmode->sync & FB_SYNC_HOR_HIGH_ACT)
+ vmode->hsync = 1;
+ if (vmode->sync & FB_SYNC_VERT_HIGH_ACT)
+ vmode->vsync = 1;
+ if (vmode->sync & FB_SYNC_COMP_HIGH_ACT)
+ vmode->csync = 1;
+ if (vmode->sync & FB_SYNC_ON_GREEN)
+ vmode->gsync = 1;
+ if (vmode->sync & FB_SYNC_EXT)
+ vmode->extsync =1;
+ if (vmode->sync & FB_SYNC_BROADCAST)
+ vmode->bcast = 1;
+ vmode->sync &= FB_CUSTOM_SYNC_MASK;
+}
+
+ /*
* Find a Video Mode
*/
@@ -617,6 +651,12 @@ static void ModifyVideoMode(struct Video
vmode->extsync = atoboolean(Opt_extsync);
if (Opt_bcast)
vmode->bcast = atoboolean(Opt_bcast);
+ if (Opt_sync)
+ {
+ vmode->sync = strtoul(Opt_sync, NULL, 0);
+ // call this only once all the other sync fields are determined!
+ fixCustomSync(vmode);
+ }
if (Opt_laced)
vmode->laced = atoboolean(Opt_laced);
if (Opt_double)
@@ -693,6 +733,8 @@ static void DisplayVModeInfo(struct Vide
puts(" extsync true");
if (vmode->bcast)
puts(" bcast true");
+ if (vmode->sync)
+ printf(" sync 0x%x\n", vmode->sync);
if (vmode->laced)
puts(" laced true");
if (vmode->dblscan)
@@ -745,6 +787,8 @@ static void DisplayVModeInfo(struct Vide
puts(" # Warning: XFree86 doesn't support extsync\n");
if (vmode->bcast)
printf(" \"bcast\"");
+ if (vmode->sync)
+ puts(" # Warning: XFree86 doesn't support custom sync values\n");
if (vmode->accel_flags)
puts(" # Warning: XFree86 doesn't support accel\n");
if (vmode->grayscale)
@@ -931,6 +975,7 @@ static void Usage(void)
" -csync <value> : composite sync polarity (low or high)\n"
" -gsync <value> : synch on green (false or true)\n"
" -extsync <value> : external sync enable (false or true)\n"
+ " -sync <value> : custom (driver specific) sync value\n"
" -bcast <value> : broadcast enable (false or true)\n"
" -laced <value> : interlace enable (false or true)\n"
" -double <value> : doublescan enable (false or true)\n"
--- a/fbset.h
+++ b/fbset.h
@@ -64,6 +64,8 @@ struct VideoMode {
unsigned laced : 1;
unsigned dblscan : 1;
unsigned grayscale : 1;
+ /* extra (fb driver specific) sync bits */
+ __u32 sync;
/* scanrates */
double drate;
double hrate;
@@ -80,3 +82,4 @@ extern int yyparse(void);
extern void Die(const char *fmt, ...) __attribute__ ((noreturn));
extern void AddVideoMode(const struct VideoMode *vmode);
extern void makeRGBA(struct VideoMode *vmode, const char* opt);
+extern void fixCustomSync(struct VideoMode *vmode);
--- a/modes.l
+++ b/modes.l
@@ -38,6 +38,7 @@ static struct keyword keywords[] = {
{ "csync", CSYNC, 0 },
{ "gsync", GSYNC, 0 },
{ "extsync", EXTSYNC, 0 },
+ { "sync", SYNC, 0 },
{ "bcast", BCAST, 0 },
{ "laced", LACED, 0 },
{ "double", DOUBLE, 0 },
@@ -98,7 +99,7 @@ static const char *CopyString(const char
%}
keyword [a-zA-Z][a-zA-Z0-9]*
-number [0-9]*
+number (0x)?[0-9]*
colors [0-9/,]*
string \"[^\"\n]*\"
comment \#([^\n]*)
--- a/modes.y
+++ b/modes.y
@@ -40,7 +40,7 @@ static void ClearVideoMode(void)
%start file
-%token MODE GEOMETRY TIMINGS HSYNC VSYNC CSYNC GSYNC EXTSYNC BCAST LACED DOUBLE
+%token MODE GEOMETRY TIMINGS HSYNC VSYNC CSYNC GSYNC EXTSYNC SYNC BCAST LACED DOUBLE
RGBA NONSTD ACCEL GRAYSCALE
ENDMODE POLARITY BOOLEAN STRING NUMBER COLORS
@@ -91,6 +91,7 @@ options : /* empty */
| options csync
| options gsync
| options extsync
+ | options sync
| options bcast
| options laced
| options double
@@ -130,6 +131,13 @@ extsync : EXTSYNC BOOLEAN
}
;
+sync: SYNC NUMBER
+ {
+ VideoMode.sync = $2;
+ fixCustomSync(&VideoMode);
+ }
+ ;
+
bcast : BCAST BOOLEAN
{
VideoMode.bcast = $2;