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V4L/DVB: gspca_ov519: Add support for the button on ov518 based cams 

Due to hardware limitations this only works while the camera is
streaming.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans de Goede 2010-02-20 04:30:45 -03:00 committed by Mauro Carvalho Chehab
parent 417a4d2659
commit 92e232acd6
1 changed files with 29 additions and 25 deletions
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54
drivers/media/video/gspca/ov519.c
View File

@ -2702,6 +2702,11 @@ static void sd_reset_snapshot(struct gspca_dev *gspca_dev)
sd->snapshot_needs_reset = 0;
switch (sd->bridge) {
case BRIDGE_OV518:
case BRIDGE_OV518PLUS:
reg_w(sd, R51x_SYS_SNAP, 0x02); /* Reset */
reg_w(sd, R51x_SYS_SNAP, 0x01); /* Enable */
break;
case BRIDGE_OV519:
reg_w(sd, R51x_SYS_RESET, 0x40);
reg_w(sd, R51x_SYS_RESET, 0x00);
@ -3977,6 +3982,28 @@ static void sd_stop0(struct gspca_dev *gspca_dev)
w9968cf_stop0(sd);
}
static void ov51x_handle_button(struct gspca_dev *gspca_dev, u8 state)
{
struct sd *sd = (struct sd *) gspca_dev;
if (sd->snapshot_pressed != state) {
#ifdef CONFIG_INPUT
input_report_key(gspca_dev->input_dev, KEY_CAMERA, state);
input_sync(gspca_dev->input_dev);
#endif
if (state)
sd->snapshot_needs_reset = 1;
sd->snapshot_pressed = state;
} else {
/* On the ov519 we need to reset the button state multiple
times, as resetting does not work as long as the button
stays pressed */
if (sd->bridge == BRIDGE_OV519 && state)
sd->snapshot_needs_reset = 1;
}
}
static void ov511_pkt_scan(struct gspca_dev *gspca_dev,
u8 *in, /* isoc packet */
int len) /* iso packet length */
@ -4035,6 +4062,7 @@ static void ov518_pkt_scan(struct gspca_dev *gspca_dev,
/* A false positive here is likely, until OVT gives me
* the definitive SOF/EOF format */
if ((!(data[0] | data[1] | data[2] | data[3] | data[5])) && data[6]) {
ov51x_handle_button(gspca_dev, (data[6] >> 1) & 1);
gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0);
sd->packet_nr = 0;
@ -4063,30 +4091,6 @@ static void ov518_pkt_scan(struct gspca_dev *gspca_dev,
gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
}
static void ov519_handle_button(struct gspca_dev *gspca_dev, u8 state)
{
struct sd *sd = (struct sd *) gspca_dev;
/* This should never happen, but better to check */
if (state != 0 && state != 1)
return;
/* We may need to reset the button state multiple times, as resetting
does not work as long as the button stays pressed, so always set
snapshot_needs_reset (instead of only on a state change to 1). */
if (state)
sd->snapshot_needs_reset = 1;
if (sd->snapshot_pressed != state) {
#ifdef CONFIG_INPUT
input_report_key(gspca_dev->input_dev, KEY_CAMERA, state);
input_sync(gspca_dev->input_dev);
#endif
sd->snapshot_pressed = state;
}
}
static void ov519_pkt_scan(struct gspca_dev *gspca_dev,
u8 *data, /* isoc packet */
int len) /* iso packet length */
@ -4120,7 +4124,7 @@ static void ov519_pkt_scan(struct gspca_dev *gspca_dev,
gspca_dev->last_packet_type = DISCARD_PACKET;
return;
case 0x51: /* end of frame */
ov519_handle_button(gspca_dev, data[11]);
ov51x_handle_button(gspca_dev, data[11] & 1);
if (data[9] != 0)
gspca_dev->last_packet_type = DISCARD_PACKET;
gspca_frame_add(gspca_dev, LAST_PACKET,