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V4L/DVB (11423): gspca - m5602-ov9650: Add a disconnect hook, setup a ctrl cache ctrl. 

Reading and writing to a register doesn't always work reliably. Add a cache
and ensure that it is deallocated properly upon module disconnect.

Signed-off-by: Erik Andr?n <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Erik Andr?n 2009-01-03 12:10:11 -03:00 committed by Mauro Carvalho Chehab
parent 1a3dd5d91a
commit d9c700d415
5 changed files with 54 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/media/video/gspca/m5602/m5602_bridge.h
View File

@ -117,6 +117,9 @@ struct sd {
struct sd_desc *desc;
/* Sensor private data */
void *sensor_priv;
/* The current frame's id, used to detect frame boundaries */
u8 frame_id;

13
drivers/media/video/gspca/m5602/m5602_core.c
View File

@ -362,6 +362,17 @@ static int m5602_probe(struct usb_interface *intf,
THIS_MODULE);
}
void m5602_disconnect(struct usb_interface *intf)
{
struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
struct sd *sd = (struct sd *) gspca_dev;
if (sd->sensor->disconnect)
sd->sensor->disconnect(sd);
gspca_disconnect(intf);
}
static struct usb_driver sd_driver = {
.name = MODULE_NAME,
.id_table = m5602_table,
@ -370,7 +381,7 @@ static struct usb_driver sd_driver = {
.suspend = gspca_suspend,
.resume = gspca_resume,
#endif
.disconnect = gspca_disconnect
.disconnect = m5602_disconnect
};
/* -- module insert / remove -- */

42
drivers/media/video/gspca/m5602/m5602_ov9650.c
View File

@ -220,6 +220,7 @@ int ov9650_probe(struct sd *sd)
{
int err = 0;
u8 prod_id = 0, ver_id = 0, i;
s32 *sensor_settings;
if (force_sensor) {
if (force_sensor == OV9650_SENSOR) {
@ -238,9 +239,10 @@ int ov9650_probe(struct sd *sd)
u8 data = preinit_ov9650[i][2];
if (preinit_ov9650[i][0] == SENSOR)
err = m5602_write_sensor(sd,
preinit_ov9650[i][1], &data, 1);
preinit_ov9650[i][1], &data, 1);
else
err = m5602_write_bridge(sd, preinit_ov9650[i][1], data);
err = m5602_write_bridge(sd,
preinit_ov9650[i][1], data);
}
if (err < 0)
@ -260,10 +262,21 @@ int ov9650_probe(struct sd *sd)
return -ENODEV;
sensor_found:
sensor_settings = kmalloc(
ARRAY_SIZE(ov9650_ctrls) * sizeof(s32), GFP_KERNEL);
if (!sensor_settings)
return -ENOMEM;
sd->gspca_dev.cam.cam_mode = ov9650_modes;
sd->gspca_dev.cam.nmodes = ARRAY_SIZE(ov9650_modes);
sd->desc->ctrls = ov9650_ctrls;
sd->desc->nctrls = ARRAY_SIZE(ov9650_ctrls);
for (i = 0; i < ARRAY_SIZE(ov9650_ctrls); i++)
sensor_settings[i] = ov9650_ctrls[i].qctrl.default_value;
sd->sensor_priv = sensor_settings;
return 0;
}
@ -324,7 +337,8 @@ int ov9650_start(struct sd *sd)
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, ((ver_offs >> 8) & 0xff));
err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA,
((ver_offs >> 8) & 0xff));
if (err < 0)
return err;
@ -344,13 +358,13 @@ int ov9650_start(struct sd *sd)
if (err < 0)
return err;
for (i = 0; i < 2 && !err; i++) {
for (i = 0; i < 2 && !err; i++)
err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
}
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, (hor_offs >> 8) & 0xff);
err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA,
(hor_offs >> 8) & 0xff);
if (err < 0)
return err;
@ -358,11 +372,13 @@ int ov9650_start(struct sd *sd)
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, ((width + hor_offs) >> 8) & 0xff);
err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA,
((width + hor_offs) >> 8) & 0xff);
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, ((width + hor_offs) & 0xff));
err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA,
((width + hor_offs) & 0xff));
if (err < 0)
return err;
@ -431,6 +447,16 @@ int ov9650_power_down(struct sd *sd)
return err;
}
void ov9650_disconnect(struct sd *sd)
{
ov9650_stop(sd);
ov9650_power_down(sd);
sd->sensor = NULL;
kfree(sd->sensor_priv);
}
int ov9650_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;

2
drivers/media/video/gspca/m5602/m5602_ov9650.h
View File

@ -138,6 +138,7 @@ int ov9650_init(struct sd *sd);
int ov9650_start(struct sd *sd);
int ov9650_stop(struct sd *sd);
int ov9650_power_down(struct sd *sd);
void ov9650_disconnect(struct sd *sd);
int ov9650_set_exposure(struct gspca_dev *gspca_dev, __s32 val);
int ov9650_get_exposure(struct gspca_dev *gspca_dev, __s32 *val);
@ -167,6 +168,7 @@ const static struct m5602_sensor ov9650 = {
.start = ov9650_start,
.stop = ov9650_stop,
.power_down = ov9650_power_down,
.disconnect = ov9650_disconnect,
};
static const unsigned char preinit_ov9650[][3] =

3
drivers/media/video/gspca/m5602/m5602_sensor.h
View File

@ -59,6 +59,9 @@ struct m5602_sensor {
/* Executed when the camera ends to send data */
int (*stop)(struct sd *sd);
/* Executed when the device is disconnected */
void (*disconnect)(struct sd *sd);
/* Performs a power down sequence */
int (*power_down)(struct sd *sd);
};