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[media] m5mols: Move the control handler initialization to probe()

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This is prerequisite for enabling the sub-device node.

The control handler is now initialized in driver's probe callback
in order to allow the user space access controls before the device
power is enabled with s_power. This is needed due to s_power being
currently called only by the host driver.

It also adds the subdev internal operations, only open() for now
for the TRY format initialization.

Acked-by: HeungJun Kim <riverful.kim@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Sylwester Nawrocki 2011-12-03 14:53:30 -03:00 committed by Mauro Carvalho Chehab
parent 5d4294b8dd
commit aa1f4601ed
1 changed files with 46 additions and 15 deletions
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61
drivers/media/video/m5mols/m5mols_core.c
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@ -685,16 +685,25 @@ static int m5mols_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct v4l2_subdev *sd = to_sd(ctrl);
struct m5mols_info *info = to_m5mols(sd);
int isp_state = info->mode;
int ret = 0;
int ispstate = info->mode;
int ret;
/*
* If needed, defer restoring the controls until
* the device is fully initialized.
*/
if (!info->isp_ready) {
info->ctrl_sync = 0;
return 0;
}
ret = m5mols_mode(info, REG_PARAMETER);
if (!ret)
ret = m5mols_set_ctrl(ctrl);
if (!ret)
ret = m5mols_mode(info, isp_state);
return ret;
if (ret < 0)
return ret;
ret = m5mols_set_ctrl(ctrl);
if (ret < 0)
return ret;
return m5mols_mode(info, ispstate);
}
static const struct v4l2_ctrl_ops m5mols_ctrl_ops = {
@ -855,8 +864,6 @@ static int m5mols_s_power(struct v4l2_subdev *sd, int on)
ret = m5mols_sensor_power(info, true);
if (!ret)
ret = m5mols_fw_start(sd);
if (!ret)
ret = m5mols_init_controls(info);
if (ret)
return ret;
@ -881,10 +888,7 @@ static int m5mols_s_power(struct v4l2_subdev *sd, int on)
}
ret = m5mols_sensor_power(info, false);
if (!ret) {
v4l2_ctrl_handler_free(&info->handle);
info->ctrl_sync = 0;
}
info->ctrl_sync = 0;
return ret;
}
@ -910,6 +914,21 @@ static const struct v4l2_subdev_core_ops m5mols_core_ops = {
.log_status = m5mols_log_status,
};
/*
* V4L2 subdev internal operations
*/
static int m5mols_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
struct v4l2_mbus_framefmt *format = v4l2_subdev_get_try_format(fh, 0);
*format = m5mols_default_ffmt[0];
return 0;
}
static const struct v4l2_subdev_internal_ops m5mols_subdev_internal_ops = {
.open = m5mols_open,
};
static const struct v4l2_subdev_ops m5mols_ops = {
.core = &m5mols_core_ops,
.pad = &m5mols_pad_ops,
@ -973,6 +992,7 @@ static int __devinit m5mols_probe(struct i2c_client *client,
strlcpy(sd->name, MODULE_NAME, sizeof(sd->name));
v4l2_i2c_subdev_init(sd, client, &m5mols_ops);
sd->internal_ops = &m5mols_subdev_internal_ops;
info->pad.flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_init(&sd->entity, 1, &info->pad, 0);
if (ret < 0)
@ -988,7 +1008,17 @@ static int __devinit m5mols_probe(struct i2c_client *client,
}
info->res_type = M5MOLS_RESTYPE_MONITOR;
return 0;
ret = m5mols_sensor_power(info, true);
if (ret)
goto out_me;
ret = m5mols_fw_start(sd);
if (!ret)
ret = m5mols_init_controls(info);
m5mols_sensor_power(info, false);
if (!ret)
return 0;
out_me:
media_entity_cleanup(&sd->entity);
out_reg:
@ -1006,6 +1036,7 @@ static int __devexit m5mols_remove(struct i2c_client *client)
struct m5mols_info *info = to_m5mols(sd);
v4l2_device_unregister_subdev(sd);
v4l2_ctrl_handler_free(sd->ctrl_handler);
free_irq(client->irq, sd);
regulator_bulk_free(ARRAY_SIZE(supplies), supplies);