482 static int ov2640_write_reg(const struct i2c_dt_spec *spec, uint8_t reg_addr,  in ov2640_write_reg()  function
537 		err = ov2640_write_reg(&cfg->i2c, regs[i].addr, regs[i].value);  in ov2640_write_all()
552 	ret |= ov2640_write_reg(&cfg->i2c, BANK_SEL, BANK_SEL_SENSOR);  in ov2640_soft_reset()
555 	ret |= ov2640_write_reg(&cfg->i2c, COM7, COM7_SRST);  in ov2640_soft_reset()
572 	ret |= ov2640_write_reg(&cfg->i2c, BANK_SEL, BANK_SEL_DSP);  in ov2640_set_level()
575 		ret |= ov2640_write_reg(&cfg->i2c, regs[0][i], regs[level][i]);  in ov2640_set_level()
630 	ret |= ov2640_write_reg(&cfg->i2c, BANK_SEL, BANK_SEL_DSP);  in ov2640_set_output_format()
634 		ret |= ov2640_write_reg(&cfg->i2c, IMAGE_MODE, IMAGE_MODE_JPEG_EN);  in ov2640_set_output_format()
637 		ret |= ov2640_write_reg(&cfg->i2c, IMAGE_MODE, IMAGE_MODE_RGB565);  in ov2640_set_output_format()
653 	ret |= ov2640_write_reg(&cfg->i2c, BANK_SEL, BANK_SEL_DSP);  in ov2640_set_quality()
656 	ret |= ov2640_write_reg(&cfg->i2c, QS, qs);  in ov2640_set_quality()
669 	ret |= ov2640_write_reg(&cfg->i2c, BANK_SEL, BANK_SEL_SENSOR);  in ov2640_set_colorbar()
680 	ret |= ov2640_write_reg(&cfg->i2c, COM7, reg);  in ov2640_set_colorbar()
693 	ret |= ov2640_write_reg(&cfg->i2c, BANK_SEL, BANK_SEL_SENSOR);  in ov2640_set_white_bal()
704 	ret |= ov2640_write_reg(&cfg->i2c, CTRL1, reg);  in ov2640_set_white_bal()
717 	ret |= ov2640_write_reg(&cfg->i2c, BANK_SEL, BANK_SEL_SENSOR);  in ov2640_set_gain_ctrl()
728 	ret |= ov2640_write_reg(&cfg->i2c, COM8, reg);  in ov2640_set_gain_ctrl()
741 	ret |= ov2640_write_reg(&cfg->i2c, BANK_SEL, BANK_SEL_SENSOR);  in ov2640_set_exposure_ctrl()
752 	ret |= ov2640_write_reg(&cfg->i2c, COM8, reg);  in ov2640_set_exposure_ctrl()
766 	ret |= ov2640_write_reg(&cfg->i2c, BANK_SEL, BANK_SEL_SENSOR);  in ov2640_set_horizontal_mirror()
777 	ret |= ov2640_write_reg(&cfg->i2c, REG04, reg);  in ov2640_set_horizontal_mirror()
790 	ret |= ov2640_write_reg(&cfg->i2c, BANK_SEL, BANK_SEL_SENSOR);  in ov2640_set_vertical_flip()
801 	ret |= ov2640_write_reg(&cfg->i2c, REG04, reg);  in ov2640_set_vertical_flip()
816 	ret |= ov2640_write_reg(&cfg->i2c, BANK_SEL, BANK_SEL_DSP);  in ov2640_set_resolution()
817 	ret |= ov2640_write_reg(&cfg->i2c, R_BYPASS, R_BYPASS_DSP_BYPAS);  in ov2640_set_resolution()
820 	ret |= ov2640_write_reg(&cfg->i2c, ZMOW, (w >> 2) & 0xFF); /* OUTW[7:0] (real/4) */  in ov2640_set_resolution()
821 	ret |= ov2640_write_reg(&cfg->i2c, ZMOH, (h >> 2) & 0xFF); /* OUTH[7:0] (real/4) */  in ov2640_set_resolution()
822 	ret |= ov2640_write_reg(&cfg->i2c, ZMHH, ((h >> 8) & 0x04) |  in ov2640_set_resolution()
826 	ret |= ov2640_write_reg(&cfg->i2c, BANK_SEL, BANK_SEL_SENSOR);  in ov2640_set_resolution()
827 	ret |= ov2640_write_reg(&cfg->i2c, CLKRC, cfg->clock_rate_control);  in ov2640_set_resolution()
833 	ret |= ov2640_write_reg(&cfg->i2c, BANK_SEL, BANK_SEL_DSP);  in ov2640_set_resolution()
834 	ret |= ov2640_write_reg(&cfg->i2c, R_BYPASS, R_BYPASS_DSP_EN);  in ov2640_set_resolution()
848 	ret |= ov2640_write_reg(&cfg->i2c, BANK_SEL, BANK_SEL_SENSOR);  in ov2640_check_connection()