// SPDX-License-Identifier: GPL-2.0 /* * Microchip eXtended Image Sensor Controller (XISC) driver * * Copyright (C) 2019-2021 Microchip Technology, Inc. and its subsidiaries * * Author: Eugen Hristev <[email protected]> * * Sensor-->PFE-->DPC-->WB-->CFA-->CC-->GAM-->VHXS-->CSC-->CBHS-->SUB-->RLP-->DMA-->HIS * * ISC video pipeline integrates the following submodules: * PFE: Parallel Front End to sample the camera sensor input stream * DPC: Defective Pixel Correction with black offset correction, green disparity * correction and defective pixel correction (3 modules total) * WB: Programmable white balance in the Bayer domain * CFA: Color filter array interpolation module * CC: Programmable color correction * GAM: Gamma correction *VHXS: Vertical and Horizontal Scaler * CSC: Programmable color space conversion *CBHS: Contrast Brightness Hue and Saturation control * SUB: This module performs YCbCr444 to YCbCr420 chrominance subsampling * RLP: This module performs rounding, range limiting * and packing of the incoming data * DMA: This module performs DMA master accesses to write frames to external RAM * HIS: Histogram module performs statistic counters on the frames */ #include <linux/clk.h> #include <linux/clkdev.h> #include <linux/clk-provider.h> #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/math64.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_graph.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/regmap.h> #include <linux/videodev2.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-device.h> #include <media/v4l2-event.h> #include <media/v4l2-image-sizes.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-fwnode.h> #include <media/v4l2-subdev.h> #include <media/videobuf2-dma-contig.h> #include "microchip-isc-regs.h" #include "microchip-isc.h" #define ISC_SAMA7G5_MAX_SUPPORT_WIDTH … #define ISC_SAMA7G5_MAX_SUPPORT_HEIGHT … #define ISC_SAMA7G5_PIPELINE … /* This is a list of the formats that the ISC can *output* */ static const struct isc_format sama7g5_controller_formats[] = …; /* This is a list of formats that the ISC can receive as *input* */ static struct isc_format sama7g5_formats_list[] = …; static void isc_sama7g5_config_csc(struct isc_device *isc) { … } static void isc_sama7g5_config_cbc(struct isc_device *isc) { … } static void isc_sama7g5_config_cc(struct isc_device *isc) { … } static void isc_sama7g5_config_ctrls(struct isc_device *isc, const struct v4l2_ctrl_ops *ops) { … } static void isc_sama7g5_config_dpc(struct isc_device *isc) { … } static void isc_sama7g5_config_gam(struct isc_device *isc) { … } static void isc_sama7g5_config_rlp(struct isc_device *isc) { … } static void isc_sama7g5_adapt_pipeline(struct isc_device *isc) { … } /* Gamma table with gamma 1/2.2 */ static const u32 isc_sama7g5_gamma_table[][GAMMA_ENTRIES] = …; static int xisc_parse_dt(struct device *dev, struct isc_device *isc) { … } static int microchip_xisc_probe(struct platform_device *pdev) { … } static void microchip_xisc_remove(struct platform_device *pdev) { … } static int __maybe_unused xisc_runtime_suspend(struct device *dev) { … } static int __maybe_unused xisc_runtime_resume(struct device *dev) { … } static const struct dev_pm_ops microchip_xisc_dev_pm_ops = …; #if IS_ENABLED(CONFIG_OF) static const struct of_device_id microchip_xisc_of_match[] = …; MODULE_DEVICE_TABLE(of, microchip_xisc_of_match); #endif static struct platform_driver microchip_xisc_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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