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Add a new sysctl, hw.sevenseg.freq, to control the update frequency.

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This commit is contained in:
Olivier Houchard 2005-01-16 13:18:52 +00:00
parent fde8140fde
commit a9357c744c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=140350
1 changed files with 6 additions and 1 deletions
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7
sys/arm/xscale/i80321/iq31244_7seg.c
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@ -47,6 +47,7 @@ __FBSDID("$FreeBSD$");
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/sysctl.h>
#include <machine/bus.h>
@ -333,6 +334,10 @@ static const uint8_t snakemap[][2] = {
{ ~SEG_B, ~SEG_F },
};
SYSCTL_NODE(_hw, OID_AUTO, sevenseg, CTLFLAG_RD, 0, "7 seg");
static int freq = 100;
SYSCTL_INT(_hw_sevenseg, OID_AUTO, freq, CTLFLAG_RW, &freq, 0,
"7 Seg update frequency");
static void
iq31244_7seg_snake(void)
{
@ -340,7 +345,7 @@ iq31244_7seg_snake(void)
int cur = snakestate;
snakefreq++;
if ((snakefreq & (0xff)))
if ((snakefreq % freq))
return;
WRITE(IQ80321_7SEG_MSB, snakemap[cur][0]);
WRITE(IQ80321_7SEG_LSB, snakemap[cur][1]);