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V4L/DVB (11636): gspca - m5602-ov7660: Design probe function

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Signed-off-by: Erik Andrén <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Erik Andrén 2009-01-21 13:39:17 -03:00 committed by Mauro Carvalho Chehab
parent 4763fa84d9
commit ea8f74b168
3 changed files with 67 additions and 1 deletions
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61
drivers/media/video/gspca/m5602/m5602_ov7660.c
View file

@ -38,7 +38,68 @@ static void ov7660_dump_registers(struct sd *sd);
int ov7660_probe(struct sd *sd)
{
int err = 0, i;
u8 prod_id = 0, ver_id = 0;
s32 *sensor_settings;
if (force_sensor) {
if (force_sensor == OV7660_SENSOR) {
info("Forcing an %s sensor", ov7660.name);
goto sensor_found;
}
/* If we want to force another sensor,
don't try to probe this one */
return -ENODEV;
}
/* Do the preinit */
for (i = 0; i < ARRAY_SIZE(preinit_ov7660) && !err; i++) {
u8 data[2];
if (preinit_ov7660[i][0] == BRIDGE) {
err = m5602_write_bridge(sd,
preinit_ov7660[i][1],
preinit_ov7660[i][2]);
} else {
data[0] = preinit_ov7660[i][2];
err = m5602_write_sensor(sd,
preinit_ov7660[i][1], data, 1);
}
}
if (err < 0)
return err;
if (m5602_read_sensor(sd, OV7660_PID, &prod_id, 1))
return -ENODEV;
if (m5602_read_sensor(sd, OV7660_VER, &ver_id, 1))
return -ENODEV;
info("Sensor reported 0x%x%x", prod_id, ver_id);
if ((prod_id == 0x76) && (ver_id == 0x60)) {
info("Detected a ov7660 sensor");
goto sensor_found;
}
return -ENODEV;
sensor_found:
sensor_settings = kmalloc(
ARRAY_SIZE(ov7660_ctrls) * sizeof(s32), GFP_KERNEL);
if (!sensor_settings)
return -ENOMEM;
sd->gspca_dev.cam.cam_mode = ov7660_modes;
sd->gspca_dev.cam.nmodes = ARRAY_SIZE(ov7660_modes);
sd->desc->ctrls = ov7660_ctrls;
sd->desc->nctrls = ARRAY_SIZE(ov7660_ctrls);
for (i = 0; i < ARRAY_SIZE(ov7660_ctrls); i++)
sensor_settings[i] = ov7660_ctrls[i].qctrl.default_value;
sd->sensor_priv = sensor_settings;
return 0;
}
int ov7660_init(struct sd *sd)

4
drivers/media/video/gspca/m5602/m5602_ov7660.h
View file

@ -84,6 +84,10 @@
#define DEFAULT_SATURATION 0x00
#define DEFAULT_EXPOSURE 0x20
/* Kernel module parameters */
extern int force_sensor;
extern int dump_sensor;
int ov7660_probe(struct sd *sd);
int ov7660_init(struct sd *sd);
int ov7660_start(struct sd *sd);

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

@ -30,7 +30,8 @@ enum sensors {
S5K83A_SENSOR = 2,
S5K4AA_SENSOR = 3,
MT9M111_SENSOR = 4,
PO1030_SENSOR = 5
PO1030_SENSOR = 5,
OV7660_SENSOR = 6,
};
/* Enumerates all possible instruction types */