// SPDX-License-Identifier: GPL-2.0 // Copyright (C) 2018 Intel Corporation #include <linux/acpi.h> #include <linux/delay.h> #include <linux/i2c.h> #include <linux/iopoll.h> #include <linux/module.h> #include <linux/pm_runtime.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-device.h> #define DW9807_MAX_FOCUS_POS … /* * This sets the minimum granularity for the focus positions. * A value of 1 gives maximum accuracy for a desired focus position. */ #define DW9807_FOCUS_STEPS … /* * This acts as the minimum granularity of lens movement. * Keep this value power of 2, so the control steps can be * uniformly adjusted for gradual lens movement, with desired * number of control steps. */ #define DW9807_CTRL_STEPS … #define DW9807_CTRL_DELAY_US … #define DW9807_CTL_ADDR … /* * DW9807 separates two registers to control the VCM position. * One for MSB value, another is LSB value. */ #define DW9807_MSB_ADDR … #define DW9807_LSB_ADDR … #define DW9807_STATUS_ADDR … #define DW9807_MODE_ADDR … #define DW9807_RESONANCE_ADDR … #define MAX_RETRY … struct dw9807_device { … }; static inline struct dw9807_device *sd_to_dw9807_vcm( struct v4l2_subdev *subdev) { … } static int dw9807_i2c_check(struct i2c_client *client) { … } static int dw9807_set_dac(struct i2c_client *client, u16 data) { … } static int dw9807_set_ctrl(struct v4l2_ctrl *ctrl) { … } static const struct v4l2_ctrl_ops dw9807_vcm_ctrl_ops = …; static int dw9807_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { … } static int dw9807_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { … } static const struct v4l2_subdev_internal_ops dw9807_int_ops = …; static const struct v4l2_subdev_ops dw9807_ops = …; static void dw9807_subdev_cleanup(struct dw9807_device *dw9807_dev) { … } static int dw9807_init_controls(struct dw9807_device *dev_vcm) { … } static int dw9807_probe(struct i2c_client *client) { … } static void dw9807_remove(struct i2c_client *client) { … } /* * This function sets the vcm position, so it consumes least current * The lens position is gradually moved in units of DW9807_CTRL_STEPS, * to make the movements smoothly. */ static int __maybe_unused dw9807_vcm_suspend(struct device *dev) { … } /* * This function sets the vcm position to the value set by the user * through v4l2_ctrl_ops s_ctrl handler * The lens position is gradually moved in units of DW9807_CTRL_STEPS, * to make the movements smoothly. */ static int __maybe_unused dw9807_vcm_resume(struct device *dev) { … } static const struct of_device_id dw9807_of_table[] = …; MODULE_DEVICE_TABLE(of, dw9807_of_table); static const struct dev_pm_ops dw9807_pm_ops = …; static struct i2c_driver dw9807_i2c_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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