mirror/freebsd
1
0
Fork 0
mirror of https://git.FreeBSD.org/src.git synced 2024-12-16 10:20:30 +00:00
Code Issues Releases Activity

Document kernel config flags better and add bidirectional override

Browse Source
This commit is contained in:
Paul Traina 1996-02-04 10:23:33 +00:00
parent dccb8efe94
commit 56d073db13
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=13905
1 changed files with 22 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
sys/i386/isa/qcam.c
View File

@ -65,6 +65,7 @@ static struct qcam_softc {
u_char *buffer; /* frame buffer */
u_char *buffer_end; /* end of frame buffer */
u_int flags;
u_int conf_flags; /* config file flags */
u_int iobase;
int unit; /* device */
void (*scanner)(struct qcam_softc *);
@ -88,6 +89,23 @@ static struct qcam_softc {
#endif
} qcam_softc[NQCAM];
/* flags in softc */
#define QC_OPEN 0x01 /* device open */
#define QC_ALIVE 0x02 /* probed and attached */
#define QC_BIDIR_HW 0x04 /* bidir parallel port */
/* flags from kernel configuration - these are temporary only! */
#define QC_CONF_NODETECT 0x01 /* always assume camera is present */
#define QC_CONF_FORCEUNI 0x02 /* force unidirectional transfers */
#define QC_MAXFRAMEBUFSIZE (QC_MAX_XSIZE*QC_MAX_YSIZE)
static const u_char qcam_zoommode[3][3] = {
{ QC_XFER_WIDE, QC_XFER_WIDE, QC_XFER_WIDE },
{ QC_XFER_NARROW, QC_XFER_WIDE, QC_XFER_WIDE },
{ QC_XFER_TIGHT, QC_XFER_NARROW, QC_XFER_WIDE }
};
static struct kern_devconf kdc_qcam_template = {
0, 0, 0, /* filled in by dev_attach() */
"qcam", /* kdc_name */
@ -108,19 +126,6 @@ static struct kern_devconf kdc_qcam_template = {
DC_CLS_MISC /* class */
};
/* flags in softc */
#define QC_OPEN 0x01 /* device open */
#define QC_ALIVE 0x02 /* probed and attached */
#define QC_BIDIR_HW 0x04 /* bidir parallel port */
#define QC_MAXFRAMEBUFSIZE (QC_MAX_XSIZE*QC_MAX_YSIZE)
static const u_char qcam_zoommode[3][3] = {
{ QC_XFER_WIDE, QC_XFER_WIDE, QC_XFER_WIDE },
{ QC_XFER_NARROW, QC_XFER_WIDE, QC_XFER_WIDE },
{ QC_XFER_TIGHT, QC_XFER_NARROW, QC_XFER_WIDE }
};
#define UNIT(dev) minor(dev)
static int qcam_probe(struct isa_device *id);
@ -215,7 +220,8 @@ qcam_reset (struct qcam_softc *qs)
write_control(iobase, 0x20);
write_data (iobase, 0x75);
if (read_data(iobase) != 0x75)
if ((read_data(iobase) != 0x75) &&
!(qs->conf_flags & QC_CONF_FORCEUNI))
qs->flags |= QC_BIDIR_HW; /* bidirectional parallel port */
else
qs->flags &= ~QC_BIDIR_HW;
@ -474,7 +480,7 @@ qcam_probe (struct isa_device *devp)
* check.
*/
if (!(devp->id_flags & 1)) {
if (!(devp->id_flags & QC_CONF_NODETECT)) {
write_control(devp->id_iobase, 0x20);
write_control(devp->id_iobase, 0x0b);
write_control(devp->id_iobase, 0x0e);
@ -533,6 +539,7 @@ qcam_attach (struct isa_device *devp)
qs->iobase = devp->id_iobase;
qs->unit = devp->id_unit;
qs->conf_flags = devp->id_flags;
qs->kdc.kdc_state = DC_IDLE;
qs->flags |= QC_ALIVE;