1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2015--2017 Intel Corporation.
8 #include <media/v4l2-ctrls.h>
9 #include <media/v4l2-device.h>
14  * This sets the minimum granularity for the focus positions.
15  * A value of 1 gives maximum accuracy for a desired focus position
19  * This acts as the minimum granularity of lens movement.
21  * uniformly adjusted for gradual lens movement, with desired
42 	return container_of(ctrl->handler, struct dw9714_device, ctrls_vcm);  in to_dw9714_vcm()
57 		dev_err(&client->dev, "I2C write fail\n");  in dw9714_i2c_write()
58 		return -EIO;  in dw9714_i2c_write()
65 	struct i2c_client *client = v4l2_get_subdevdata(&dw9714_dev->sd);  in dw9714_t_focus_vcm()
67 	dw9714_dev->current_val = val;  in dw9714_t_focus_vcm()
76 	if (ctrl->id == V4L2_CID_FOCUS_ABSOLUTE)  in dw9714_set_ctrl()
77 		return dw9714_t_focus_vcm(dev_vcm, ctrl->val);  in dw9714_set_ctrl()
79 	return -EINVAL;  in dw9714_set_ctrl()
88 	return pm_runtime_resume_and_get(sd->dev);  in dw9714_open()
93 	pm_runtime_put(sd->dev);  in dw9714_close()
107 	v4l2_async_unregister_subdev(&dw9714_dev->sd);  in dw9714_subdev_cleanup()
108 	v4l2_ctrl_handler_free(&dw9714_dev->ctrls_vcm);  in dw9714_subdev_cleanup()
109 	media_entity_cleanup(&dw9714_dev->sd.entity);  in dw9714_subdev_cleanup()
114 	struct v4l2_ctrl_handler *hdl = &dev_vcm->ctrls_vcm;  in dw9714_init_controls()
122 	if (hdl->error)  in dw9714_init_controls()
123 		dev_err(dev_vcm->sd.dev, "%s fail error: 0x%x\n",  in dw9714_init_controls()
124 			__func__, hdl->error);  in dw9714_init_controls()
125 	dev_vcm->sd.ctrl_handler = hdl;  in dw9714_init_controls()
126 	return hdl->error;  in dw9714_init_controls()
134 	dw9714_dev = devm_kzalloc(&client->dev, sizeof(*dw9714_dev),  in dw9714_probe()
137 		return -ENOMEM;  in dw9714_probe()
139 	v4l2_i2c_subdev_init(&dw9714_dev->sd, client, &dw9714_ops);  in dw9714_probe()
140 	dw9714_dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;  in dw9714_probe()
141 	dw9714_dev->sd.internal_ops = &dw9714_int_ops;  in dw9714_probe()
147 	rval = media_entity_pads_init(&dw9714_dev->sd.entity, 0, NULL);  in dw9714_probe()
151 	dw9714_dev->sd.entity.function = MEDIA_ENT_F_LENS;  in dw9714_probe()
153 	rval = v4l2_async_register_subdev(&dw9714_dev->sd);  in dw9714_probe()
157 	pm_runtime_set_active(&client->dev);  in dw9714_probe()
158 	pm_runtime_enable(&client->dev);  in dw9714_probe()
159 	pm_runtime_idle(&client->dev);  in dw9714_probe()
164 	v4l2_ctrl_handler_free(&dw9714_dev->ctrls_vcm);  in dw9714_probe()
165 	media_entity_cleanup(&dw9714_dev->sd.entity);  in dw9714_probe()
175 	pm_runtime_disable(&client->dev);  in dw9714_remove()
183  * The lens position is gradually moved in units of DW9714_CTRL_STEPS,
193 	for (val = dw9714_dev->current_val & ~(DW9714_CTRL_STEPS - 1);  in dw9714_vcm_suspend()
194 	     val >= 0; val -= DW9714_CTRL_STEPS) {  in dw9714_vcm_suspend()
207  * The lens position is gradually moved in units of DW9714_CTRL_STEPS,
217 	for (val = dw9714_dev->current_val % DW9714_CTRL_STEPS;  in dw9714_vcm_resume()
218 	     val < dw9714_dev->current_val + DW9714_CTRL_STEPS - 1;  in dw9714_vcm_resume()