From aa1f4601ed35820a9bd720cc5b1e3fe3c4ff7c5f Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Sat, 3 Dec 2011 14:53:30 -0300 Subject: [PATCH] [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 Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/m5mols/m5mols_core.c | 61 ++++++++++++++++++------ 1 file changed, 46 insertions(+), 15 deletions(-) diff --git a/drivers/media/video/m5mols/m5mols_core.c b/drivers/media/video/m5mols/m5mols_core.c index 9966d2e687f..ea594cf0fa5 100644 --- a/drivers/media/video/m5mols/m5mols_core.c +++ b/drivers/media/video/m5mols/m5mols_core.c @@ -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; - ret = m5mols_mode(info, REG_PARAMETER); - if (!ret) - ret = m5mols_set_ctrl(ctrl); - if (!ret) - ret = m5mols_mode(info, isp_state); + /* + * If needed, defer restoring the controls until + * the device is fully initialized. + */ + if (!info->isp_ready) { + info->ctrl_sync = 0; + return 0; + } - return ret; + ret = m5mols_mode(info, REG_PARAMETER); + 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); -- 2.39.5