// SPDX-License-Identifier: GPL-2.0-or-later /* * Video Capture Driver (Video for Linux 1/2) * for the Matrox Marvel G200,G400 and Rainbow Runner-G series * * This module is an interface to the KS0127 video decoder chip. * * Copyright (C) 1999 Ryan Drake <[email protected]> * ***************************************************************************** * * Modified and extended by * Mike Bernson <[email protected]> * Gerard v.d. Horst * Leon van Stuivenberg <[email protected]> * Gernot Ziegler <[email protected]> * * Version History: * V1.0 Ryan Drake Initial version by Ryan Drake * V1.1 Gerard v.d. Horst Added some debugoutput, reset the video-standard */ #include <linux/init.h> #include <linux/module.h> #include <linux/delay.h> #include <linux/errno.h> #include <linux/kernel.h> #include <linux/i2c.h> #include <linux/videodev2.h> #include <linux/slab.h> #include <media/v4l2-device.h> #include "ks0127.h" MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; /* Addresses */ #define I2C_KS0127_ADDON … #define I2C_KS0127_ONBOARD … /* ks0127 control registers */ #define KS_STAT … #define KS_CMDA … #define KS_CMDB … #define KS_CMDC … #define KS_CMDD … #define KS_HAVB … #define KS_HAVE … #define KS_HS1B … #define KS_HS1E … #define KS_HS2B … #define KS_HS2E … #define KS_AGC … #define KS_HXTRA … #define KS_CDEM … #define KS_PORTAB … #define KS_LUMA … #define KS_CON … #define KS_BRT … #define KS_CHROMA … #define KS_CHROMB … #define KS_DEMOD … #define KS_SAT … #define KS_HUE … #define KS_VERTIA … #define KS_VERTIB … #define KS_VERTIC … #define KS_HSCLL … #define KS_HSCLH … #define KS_VSCLL … #define KS_VSCLH … #define KS_OFMTA … #define KS_OFMTB … #define KS_VBICTL … #define KS_CCDAT2 … #define KS_CCDAT1 … #define KS_VBIL30 … #define KS_VBIL74 … #define KS_VBIL118 … #define KS_VBIL1512 … #define KS_TTFRAM … #define KS_TESTA … #define KS_UVOFFH … #define KS_UVOFFL … #define KS_UGAIN … #define KS_VGAIN … #define KS_VAVB … #define KS_VAVE … #define KS_CTRACK … #define KS_POLCTL … #define KS_REFCOD … #define KS_INVALY … #define KS_INVALU … #define KS_INVALV … #define KS_UNUSEY … #define KS_UNUSEU … #define KS_UNUSEV … #define KS_USRSAV … #define KS_USREAV … #define KS_SHS1A … #define KS_SHS1B … #define KS_SHS1C … #define KS_CMDE … #define KS_VSDEL … #define KS_CMDF … #define KS_GAMMA0 … #define KS_GAMMA1 … #define KS_GAMMA2 … #define KS_GAMMA3 … #define KS_GAMMA4 … #define KS_GAMMA5 … #define KS_GAMMA6 … #define KS_GAMMA7 … #define KS_GAMMA8 … #define KS_GAMMA9 … #define KS_GAMMA10 … #define KS_GAMMA11 … #define KS_GAMMA12 … #define KS_GAMMA13 … #define KS_GAMMA14 … #define KS_GAMMA15 … #define KS_GAMMA16 … #define KS_GAMMA17 … #define KS_GAMMA18 … #define KS_GAMMA19 … #define KS_GAMMA20 … #define KS_GAMMA21 … #define KS_GAMMA22 … #define KS_GAMMA23 … #define KS_GAMMA24 … #define KS_GAMMA25 … #define KS_GAMMA26 … #define KS_GAMMA27 … #define KS_GAMMA28 … #define KS_GAMMA29 … #define KS_GAMMA30 … #define KS_GAMMA31 … #define KS_GAMMAD0 … #define KS_GAMMAD1 … #define KS_GAMMAD2 … #define KS_GAMMAD3 … #define KS_GAMMAD4 … #define KS_GAMMAD5 … #define KS_GAMMAD6 … #define KS_GAMMAD7 … #define KS_GAMMAD8 … #define KS_GAMMAD9 … #define KS_GAMMAD10 … #define KS_GAMMAD11 … #define KS_GAMMAD12 … #define KS_GAMMAD13 … #define KS_GAMMAD14 … #define KS_GAMMAD15 … #define KS_GAMMAD16 … #define KS_GAMMAD17 … #define KS_GAMMAD18 … #define KS_GAMMAD19 … #define KS_GAMMAD20 … #define KS_GAMMAD21 … #define KS_GAMMAD22 … #define KS_GAMMAD23 … #define KS_GAMMAD24 … #define KS_GAMMAD25 … #define KS_GAMMAD26 … #define KS_GAMMAD27 … #define KS_GAMMAD28 … #define KS_GAMMAD29 … #define KS_GAMMAD30 … #define KS_GAMMAD31 … /**************************************************************************** * mga_dev : represents one ks0127 chip. ****************************************************************************/ struct ks0127 { … }; static inline struct ks0127 *to_ks0127(struct v4l2_subdev *sd) { … } static int debug; /* insmod parameter */ module_param(debug, int, 0); MODULE_PARM_DESC(…) …; static u8 reg_defaults[64]; static void init_reg_defaults(void) { … } /* We need to manually read because of a bug in the KS0127 chip. * * An explanation from [email protected]: * * During I2C reads, the KS0127 only samples for a stop condition * during the place where the acknowledge bit should be. Any standard * I2C implementation (correctly) throws in another clock transition * at the 9th bit, and the KS0127 will not recognize the stop condition * and will continue to clock out data. * * So we have to do the read ourself. Big deal. * workaround in i2c-algo-bit */ static u8 ks0127_read(struct v4l2_subdev *sd, u8 reg) { … } static void ks0127_write(struct v4l2_subdev *sd, u8 reg, u8 val) { … } /* generic bit-twiddling */ static void ks0127_and_or(struct v4l2_subdev *sd, u8 reg, u8 and_v, u8 or_v) { … } /**************************************************************************** * ks0127 private api ****************************************************************************/ static void ks0127_init(struct v4l2_subdev *sd) { … } static int ks0127_s_routing(struct v4l2_subdev *sd, u32 input, u32 output, u32 config) { … } static int ks0127_s_std(struct v4l2_subdev *sd, v4l2_std_id std) { … } static int ks0127_s_stream(struct v4l2_subdev *sd, int enable) { … } static int ks0127_status(struct v4l2_subdev *sd, u32 *pstatus, v4l2_std_id *pstd) { … } static int ks0127_querystd(struct v4l2_subdev *sd, v4l2_std_id *std) { … } static int ks0127_g_input_status(struct v4l2_subdev *sd, u32 *status) { … } /* ----------------------------------------------------------------------- */ static const struct v4l2_subdev_video_ops ks0127_video_ops = …; static const struct v4l2_subdev_ops ks0127_ops = …; /* ----------------------------------------------------------------------- */ static int ks0127_probe(struct i2c_client *client) { … } static void ks0127_remove(struct i2c_client *client) { … } static const struct i2c_device_id ks0127_id[] = …; MODULE_DEVICE_TABLE(i2c, ks0127_id); static struct i2c_driver ks0127_driver = …; module_i2c_driver(…) …;
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