[media] m5mols: Move the control handler initialization to probe()
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>
diff --git a/drivers/media/video/m5mols/m5mols_core.c b/drivers/media/video/m5mols/m5mols_core.c
index 9966d2e..ea594cf 100644
--- a/drivers/media/video/m5mols/m5mols_core.c
+++ b/drivers/media/video/m5mols/m5mols_core.c
@@ -685,16 +685,25 @@
{
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 @@
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 @@
}
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 @@
.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 @@
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 @@
}
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 @@
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);