// SPDX-License-Identifier: GPL-2.0-or-later /* * * keyboard input driver for i2c IR remote controls * * Copyright (c) 2000-2003 Gerd Knorr <[email protected]> * modified for PixelView (BT878P+W/FM) by * Michal Kochanowicz <[email protected]> * Christoph Bartelmus <[email protected]> * modified for KNC ONE TV Station/Anubis Typhoon TView Tuner by * Ulrich Mueller <[email protected]> * modified for em2820 based USB TV tuners by * Markus Rechberger <[email protected]> * modified for DViCO Fusion HDTV 5 RT GOLD by * Chaogui Zhang <[email protected]> * modified for MSI TV@nywhere Plus by * Henry Wong <[email protected]> * Mark Schultz <[email protected]> * Brian Rogers <[email protected]> * modified for AVerMedia Cardbus by * Oldrich Jedlicka <[email protected]> * Zilog Transmitter portions/ideas were derived from GPLv2+ sources: * - drivers/char/pctv_zilogir.[ch] from Hauppauge Broadway product * Copyright 2011 Hauppauge Computer works * - drivers/staging/media/lirc/lirc_zilog.c * Copyright (c) 2000 Gerd Knorr <[email protected]> * Michal Kochanowicz <[email protected]> * Christoph Bartelmus <[email protected]> * Ulrich Mueller <[email protected]> * Stefan Jahn <[email protected]> * Jerome Brock <[email protected]> * Thomas Reitmayr ([email protected]) * Mark Weaver <[email protected]> * Jarod Wilson <[email protected]> * Copyright (C) 2011 Andy Walls <[email protected]> */ #include <linux/unaligned.h> #include <linux/module.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/string.h> #include <linux/timer.h> #include <linux/delay.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/i2c.h> #include <linux/workqueue.h> #include <media/rc-core.h> #include <media/i2c/ir-kbd-i2c.h> #define FLAG_TX … #define FLAG_HDPVR … static bool enable_hdpvr; module_param(enable_hdpvr, bool, 0644); static int get_key_haup_common(struct IR_i2c *ir, enum rc_proto *protocol, u32 *scancode, u8 *ptoggle, int size) { … } static int get_key_haup(struct IR_i2c *ir, enum rc_proto *protocol, u32 *scancode, u8 *toggle) { … } static int get_key_haup_xvr(struct IR_i2c *ir, enum rc_proto *protocol, u32 *scancode, u8 *toggle) { … } static int get_key_pixelview(struct IR_i2c *ir, enum rc_proto *protocol, u32 *scancode, u8 *toggle) { … } static int get_key_fusionhdtv(struct IR_i2c *ir, enum rc_proto *protocol, u32 *scancode, u8 *toggle) { … } static int get_key_knc1(struct IR_i2c *ir, enum rc_proto *protocol, u32 *scancode, u8 *toggle) { … } static int get_key_geniatech(struct IR_i2c *ir, enum rc_proto *protocol, u32 *scancode, u8 *toggle) { … } static int get_key_avermedia_cardbus(struct IR_i2c *ir, enum rc_proto *protocol, u32 *scancode, u8 *toggle) { … } /* ----------------------------------------------------------------------- */ static int ir_key_poll(struct IR_i2c *ir) { … } static void ir_work(struct work_struct *work) { … } static int ir_open(struct rc_dev *dev) { … } static void ir_close(struct rc_dev *dev) { … } /* Zilog Transmit Interface */ #define XTAL_FREQ … #define ZILOG_SEND … #define ZILOG_UIR_END … #define ZILOG_INIT_END … #define ZILOG_LIR_END … #define ZILOG_STATUS_OK … #define ZILOG_STATUS_TX … #define ZILOG_STATUS_SET … /* * As you can see here, very few different lengths of pulse and space * can be encoded. This means that the hardware does not work well with * recorded IR. It's best to work with generated IR, like from ir-ctl or * the in-kernel encoders. */ struct code_block { … } __packed; static int send_data_block(struct IR_i2c *ir, int cmd, struct code_block *code_block) { … } static int zilog_init(struct IR_i2c *ir) { … } /* * If the last slot for pulse is the same as the current slot for pulse, * then use slot no 7. */ static void copy_codes(u8 *dst, u8 *src, unsigned int count) { … } /* * When looking for repeats, we don't care about the trailing space. This * is set to the shortest possible anyway. */ static int cmp_no_trail(u8 *a, u8 *b, unsigned int count) { … } static int find_slot(u16 *array, unsigned int size, u16 val) { … } static int zilog_ir_format(struct rc_dev *rcdev, unsigned int *txbuf, unsigned int count, struct code_block *code_block) { … } static int zilog_tx(struct rc_dev *rcdev, unsigned int *txbuf, unsigned int count) { … } static int zilog_tx_carrier(struct rc_dev *dev, u32 carrier) { … } static int zilog_tx_duty_cycle(struct rc_dev *dev, u32 duty_cycle) { … } static int ir_probe(struct i2c_client *client) { … } static void ir_remove(struct i2c_client *client) { … } static const struct i2c_device_id ir_kbd_id[] = …; MODULE_DEVICE_TABLE(i2c, ir_kbd_id); static struct i2c_driver ir_kbd_driver = …; module_i2c_driver(…) …; /* ----------------------------------------------------------------------- */ MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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