// SPDX-License-Identifier: GPL-2.0 /* * video-i2c.c - Support for I2C transport video devices * * Copyright (C) 2018 Matt Ranostay <[email protected]> * * Supported: * - Panasonic AMG88xx Grid-Eye Sensors * - Melexis MLX90640 Thermal Cameras */ #include <linux/bits.h> #include <linux/delay.h> #include <linux/freezer.h> #include <linux/hwmon.h> #include <linux/kthread.h> #include <linux/i2c.h> #include <linux/list.h> #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/pm_runtime.h> #include <linux/nvmem-provider.h> #include <linux/regmap.h> #include <linux/sched.h> #include <linux/slab.h> #include <linux/videodev2.h> #include <media/v4l2-common.h> #include <media/v4l2-device.h> #include <media/v4l2-event.h> #include <media/v4l2-fh.h> #include <media/v4l2-ioctl.h> #include <media/videobuf2-v4l2.h> #include <media/videobuf2-vmalloc.h> #define VIDEO_I2C_DRIVER … /* Power control register */ #define AMG88XX_REG_PCTL … #define AMG88XX_PCTL_NORMAL … #define AMG88XX_PCTL_SLEEP … /* Reset register */ #define AMG88XX_REG_RST … #define AMG88XX_RST_FLAG … #define AMG88XX_RST_INIT … /* Frame rate register */ #define AMG88XX_REG_FPSC … #define AMG88XX_FPSC_1FPS … /* Thermistor register */ #define AMG88XX_REG_TTHL … /* Temperature register */ #define AMG88XX_REG_T01L … /* RAM */ #define MLX90640_RAM_START_ADDR … /* EEPROM */ #define MLX90640_EEPROM_START_ADDR … /* Control register */ #define MLX90640_REG_CTL1 … #define MLX90640_REG_CTL1_MASK … #define MLX90640_REG_CTL1_MASK_SHIFT … struct video_i2c_chip; struct video_i2c_buffer { … }; struct video_i2c_data { … }; static const struct v4l2_fmtdesc amg88xx_format = …; static const struct v4l2_frmsize_discrete amg88xx_size = …; static const struct v4l2_fmtdesc mlx90640_format = …; static const struct v4l2_frmsize_discrete mlx90640_size = …; static const struct regmap_config amg88xx_regmap_config = …; static const struct regmap_config mlx90640_regmap_config = …; struct video_i2c_chip { … }; static int mlx90640_nvram_read(void *priv, unsigned int offset, void *val, size_t bytes) { … } static struct nvmem_config mlx90640_nvram_config = …; static int amg88xx_xfer(struct video_i2c_data *data, char *buf) { … } static int mlx90640_xfer(struct video_i2c_data *data, char *buf) { … } static int amg88xx_setup(struct video_i2c_data *data) { … } static int mlx90640_setup(struct video_i2c_data *data) { … } static int amg88xx_set_power_on(struct video_i2c_data *data) { … } static int amg88xx_set_power_off(struct video_i2c_data *data) { … } static int amg88xx_set_power(struct video_i2c_data *data, bool on) { … } #if IS_REACHABLE(CONFIG_HWMON) static const u32 amg88xx_temp_config[] = …; static const struct hwmon_channel_info amg88xx_temp = …; static const struct hwmon_channel_info * const amg88xx_info[] = …; static umode_t amg88xx_is_visible(const void *drvdata, enum hwmon_sensor_types type, u32 attr, int channel) { … } static int amg88xx_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *val) { … } static const struct hwmon_ops amg88xx_hwmon_ops = …; static const struct hwmon_chip_info amg88xx_chip_info = …; static int amg88xx_hwmon_init(struct video_i2c_data *data) { … } #else #define amg88xx_hwmon_init … #endif enum { … }; static const struct v4l2_fract amg88xx_frame_intervals[] = …; static const struct v4l2_fract mlx90640_frame_intervals[] = …; static const struct video_i2c_chip video_i2c_chip[] = …; static const struct v4l2_file_operations video_i2c_fops = …; static int queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) { … } static int buffer_prepare(struct vb2_buffer *vb) { … } static void buffer_queue(struct vb2_buffer *vb) { … } static int video_i2c_thread_vid_cap(void *priv) { … } static void video_i2c_del_list(struct vb2_queue *vq, enum vb2_buffer_state state) { … } static int start_streaming(struct vb2_queue *vq, unsigned int count) { … } static void stop_streaming(struct vb2_queue *vq) { … } static const struct vb2_ops video_i2c_video_qops = …; static int video_i2c_querycap(struct file *file, void *priv, struct v4l2_capability *vcap) { … } static int video_i2c_g_input(struct file *file, void *fh, unsigned int *inp) { … } static int video_i2c_s_input(struct file *file, void *fh, unsigned int inp) { … } static int video_i2c_enum_input(struct file *file, void *fh, struct v4l2_input *vin) { … } static int video_i2c_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *fmt) { … } static int video_i2c_enum_framesizes(struct file *file, void *fh, struct v4l2_frmsizeenum *fsize) { … } static int video_i2c_enum_frameintervals(struct file *file, void *priv, struct v4l2_frmivalenum *fe) { … } static int video_i2c_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt) { … } static int video_i2c_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt) { … } static int video_i2c_g_parm(struct file *filp, void *priv, struct v4l2_streamparm *parm) { … } static int video_i2c_s_parm(struct file *filp, void *priv, struct v4l2_streamparm *parm) { … } static const struct v4l2_ioctl_ops video_i2c_ioctl_ops = …; static void video_i2c_release(struct video_device *vdev) { … } static int video_i2c_probe(struct i2c_client *client) { … } static void video_i2c_remove(struct i2c_client *client) { … } #ifdef CONFIG_PM static int video_i2c_pm_runtime_suspend(struct device *dev) { … } static int video_i2c_pm_runtime_resume(struct device *dev) { … } #endif static const struct dev_pm_ops video_i2c_pm_ops = …; static const struct i2c_device_id video_i2c_id_table[] = …; MODULE_DEVICE_TABLE(i2c, video_i2c_id_table); static const struct of_device_id video_i2c_of_match[] = …; MODULE_DEVICE_TABLE(of, video_i2c_of_match); static struct i2c_driver video_i2c_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
Codebase Browser
linux