// SPDX-License-Identifier: GPL-2.0 // // mt9v011 -Micron 1/4-Inch VGA Digital Image Sensor // // Copyright (c) 2009 Mauro Carvalho Chehab <[email protected]> #include <linux/i2c.h> #include <linux/slab.h> #include <linux/videodev2.h> #include <linux/delay.h> #include <linux/module.h> #include <asm/div64.h> #include <media/v4l2-device.h> #include <media/v4l2-ctrls.h> #include <media/i2c/mt9v011.h> MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; static int debug; module_param(debug, int, 0); MODULE_PARM_DESC(…) …; #define R00_MT9V011_CHIP_VERSION … #define R01_MT9V011_ROWSTART … #define R02_MT9V011_COLSTART … #define R03_MT9V011_HEIGHT … #define R04_MT9V011_WIDTH … #define R05_MT9V011_HBLANK … #define R06_MT9V011_VBLANK … #define R07_MT9V011_OUT_CTRL … #define R09_MT9V011_SHUTTER_WIDTH … #define R0A_MT9V011_CLK_SPEED … #define R0B_MT9V011_RESTART … #define R0C_MT9V011_SHUTTER_DELAY … #define R0D_MT9V011_RESET … #define R1E_MT9V011_DIGITAL_ZOOM … #define R20_MT9V011_READ_MODE … #define R2B_MT9V011_GREEN_1_GAIN … #define R2C_MT9V011_BLUE_GAIN … #define R2D_MT9V011_RED_GAIN … #define R2E_MT9V011_GREEN_2_GAIN … #define R35_MT9V011_GLOBAL_GAIN … #define RF1_MT9V011_CHIP_ENABLE … #define MT9V011_VERSION … #define MT9V011_REV_B_VERSION … struct mt9v011 { … }; static inline struct mt9v011 *to_mt9v011(struct v4l2_subdev *sd) { … } static int mt9v011_read(struct v4l2_subdev *sd, unsigned char addr) { … } static void mt9v011_write(struct v4l2_subdev *sd, unsigned char addr, u16 value) { … } struct i2c_reg_value { … }; /* * Values used at the original driver * Some values are marked as Reserved at the datasheet */ static const struct i2c_reg_value mt9v011_init_default[] = …; static u16 calc_mt9v011_gain(s16 lineargain) { … } static void set_balance(struct v4l2_subdev *sd) { … } static void calc_fps(struct v4l2_subdev *sd, u32 *numerator, u32 *denominator) { … } static u16 calc_speed(struct v4l2_subdev *sd, u32 numerator, u32 denominator) { … } static void set_res(struct v4l2_subdev *sd) { struct mt9v011 *core = to_mt9v011(sd); unsigned vstart, hstart; /* * The mt9v011 doesn't have scaling. So, in order to select the desired * resolution, we're cropping at the middle of the sensor. * hblank and vblank should be adjusted, in order to warrant that * we'll preserve the line timings for 30 fps, no matter what resolution * is selected. * NOTE: datasheet says that width (and height) should be filled with * width-1. However, this doesn't work, since one pixel per line will * be missing. */ hstart = 20 + (640 - core->width) / 2; mt9v011_write(sd, R02_MT9V011_COLSTART, hstart); mt9v011_write(sd, R04_MT9V011_WIDTH, core->width); mt9v011_write(sd, R05_MT9V011_HBLANK, 771 - core->width); vstart = 8 + (480 - core->height) / 2; mt9v011_write(sd, R01_MT9V011_ROWSTART, vstart); mt9v011_write(sd, R03_MT9V011_HEIGHT, core->height); mt9v011_write(sd, R06_MT9V011_VBLANK, 508 - core->height); calc_fps(sd, NULL, NULL); }; static void set_read_mode(struct v4l2_subdev *sd) { … } static int mt9v011_reset(struct v4l2_subdev *sd, u32 val) { … } static int mt9v011_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) { … } static int mt9v011_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *format) { … } static int mt9v011_get_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_interval *ival) { … } static int mt9v011_set_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_interval *ival) { … } #ifdef CONFIG_VIDEO_ADV_DEBUG static int mt9v011_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) { … } static int mt9v011_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg) { … } #endif static int mt9v011_s_ctrl(struct v4l2_ctrl *ctrl) { … } static const struct v4l2_ctrl_ops mt9v011_ctrl_ops = …; static const struct v4l2_subdev_core_ops mt9v011_core_ops = …; static const struct v4l2_subdev_pad_ops mt9v011_pad_ops = …; static const struct v4l2_subdev_ops mt9v011_ops = …; /**************************************************************************** I2C Client & Driver ****************************************************************************/ static int mt9v011_probe(struct i2c_client *c) { … } static void mt9v011_remove(struct i2c_client *c) { … } /* ----------------------------------------------------------------------- */ static const struct i2c_device_id mt9v011_id[] = …; MODULE_DEVICE_TABLE(i2c, mt9v011_id); static struct i2c_driver mt9v011_driver = …; module_i2c_driver(…) …;
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