diff options
Diffstat (limited to 'drivers/media/rc/rc-core-priv.h')
| -rw-r--r-- | drivers/media/rc/rc-core-priv.h | 154 |
1 files changed, 112 insertions, 42 deletions
diff --git a/drivers/media/rc/rc-core-priv.h b/drivers/media/rc/rc-core-priv.h index b3e7cac2c3ee..4967d87ec4b7 100644 --- a/drivers/media/rc/rc-core-priv.h +++ b/drivers/media/rc/rc-core-priv.h @@ -1,36 +1,46 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * Remote Controller core raw events header * * Copyright (C) 2010 by Mauro Carvalho Chehab - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #ifndef _RC_CORE_PRIV #define _RC_CORE_PRIV +#define RC_DEV_MAX 256 /* Define the max number of pulse/space transitions to buffer */ #define MAX_IR_EVENT_SIZE 512 #include <linux/slab.h> +#include <uapi/linux/bpf.h> #include <media/rc-core.h> +/** + * rc_open - Opens a RC device + * + * @rdev: pointer to struct rc_dev. + */ +int rc_open(struct rc_dev *rdev); + +/** + * rc_close - Closes a RC device + * + * @rdev: pointer to struct rc_dev. + */ +void rc_close(struct rc_dev *rdev); + struct ir_raw_handler { struct list_head list; u64 protocols; /* which are handled by this handler */ int (*decode)(struct rc_dev *dev, struct ir_raw_event event); - int (*encode)(enum rc_type protocol, u32 scancode, + int (*encode)(enum rc_proto protocol, u32 scancode, struct ir_raw_event *events, unsigned int max); + u32 carrier; + u32 min_timeout; - /* These two should only be used by the lirc decoder */ + /* These two should only be used by the mce kbd decoder */ int (*raw_register)(struct rc_dev *dev); int (*raw_unregister)(struct rc_dev *dev); }; @@ -41,12 +51,20 @@ struct ir_raw_event_ctrl { /* fifo for the pulse/space durations */ DECLARE_KFIFO(kfifo, struct ir_raw_event, MAX_IR_EVENT_SIZE); ktime_t last_event; /* when last event occurred */ - enum raw_event_type last_type; /* last event type */ struct rc_dev *dev; /* pointer to the parent rc_dev */ + /* handle delayed ir_raw_event_store_edge processing */ + spinlock_t edge_spinlock; + struct timer_list edge_handle; /* raw decoder state follows */ struct ir_raw_event prev_ev; struct ir_raw_event this_ev; + +#ifdef CONFIG_BPF_LIRC_MODE2 + u32 bpf_sample; + struct bpf_prog_array __rcu *progs; +#endif +#if IS_ENABLED(CONFIG_IR_NEC_DECODER) struct nec_dec { int state; unsigned count; @@ -54,25 +72,33 @@ struct ir_raw_event_ctrl { bool is_nec_x; bool necx_repeat; } nec; +#endif +#if IS_ENABLED(CONFIG_IR_RC5_DECODER) struct rc5_dec { int state; u32 bits; unsigned count; bool is_rc5x; } rc5; +#endif +#if IS_ENABLED(CONFIG_IR_RC6_DECODER) struct rc6_dec { int state; u8 header; - u32 body; bool toggle; + u32 body; unsigned count; unsigned wanted_bits; } rc6; +#endif +#if IS_ENABLED(CONFIG_IR_SONY_DECODER) struct sony_dec { int state; u32 bits; unsigned count; } sony; +#endif +#if IS_ENABLED(CONFIG_IR_JVC_DECODER) struct jvc_dec { int state; u16 bits; @@ -81,46 +107,62 @@ struct ir_raw_event_ctrl { bool first; bool toggle; } jvc; +#endif +#if IS_ENABLED(CONFIG_IR_SANYO_DECODER) struct sanyo_dec { int state; unsigned count; u64 bits; } sanyo; +#endif +#if IS_ENABLED(CONFIG_IR_SHARP_DECODER) struct sharp_dec { int state; unsigned count; u32 bits; unsigned int pulse_len; } sharp; +#endif +#if IS_ENABLED(CONFIG_IR_MCE_KBD_DECODER) struct mce_kbd_dec { - struct input_dev *idev; - struct timer_list rx_timeout; - char name[64]; - char phys[64]; + /* locks key up timer */ + spinlock_t keylock; int state; + struct timer_list rx_timeout; u8 header; u32 body; unsigned count; unsigned wanted_bits; } mce_kbd; - struct lirc_codec { - struct rc_dev *dev; - struct lirc_driver *drv; - int carrier_low; - - ktime_t gap_start; - u64 gap_duration; - bool gap; - bool send_timeout_reports; - - } lirc; +#endif +#if IS_ENABLED(CONFIG_IR_XMP_DECODER) struct xmp_dec { int state; unsigned count; u32 durations[16]; } xmp; +#endif +#if IS_ENABLED(CONFIG_IR_IMON_DECODER) + struct imon_dec { + int state; + int count; + int last_chk; + unsigned int bits; + bool stick_keyboard; + } imon; +#endif +#if IS_ENABLED(CONFIG_IR_RCMM_DECODER) + struct rcmm_dec { + int state; + unsigned int count; + u32 bits; + } rcmm; +#endif }; +/* Mutex for locking raw IR processing and handler change */ +extern struct mutex ir_raw_handler_lock; + /* macros for IR decoders */ static inline bool geq_margin(unsigned d1, unsigned d2, unsigned margin) { @@ -148,36 +190,37 @@ static inline void decrease_duration(struct ir_raw_event *ev, unsigned duration) /* Returns true if event is normal pulse/space event */ static inline bool is_timing_event(struct ir_raw_event ev) { - return !ev.carrier_report && !ev.reset; + return !ev.carrier_report && !ev.overflow; } -#define TO_US(duration) DIV_ROUND_CLOSEST((duration), 1000) #define TO_STR(is_pulse) ((is_pulse) ? "pulse" : "space") /* functions for IR encoders */ +bool rc_validate_scancode(enum rc_proto proto, u32 scancode); static inline void init_ir_raw_event_duration(struct ir_raw_event *ev, unsigned int pulse, u32 duration) { - init_ir_raw_event(ev); - ev->duration = duration; - ev->pulse = pulse; + *ev = (struct ir_raw_event) { + .duration = duration, + .pulse = pulse + }; } /** * struct ir_raw_timings_manchester - Manchester coding timings - * @leader: duration of leader pulse (if any) 0 if continuing - * existing signal (see @pulse_space_start) - * @pulse_space_start: 1 for starting with pulse (0 for starting with space) + * @leader_pulse: duration of leader pulse (if any) 0 if continuing + * existing signal + * @leader_space: duration of leader space (if any) * @clock: duration of each pulse/space in ns * @invert: if set clock logic is inverted * (0 = space + pulse, 1 = pulse + space) * @trailer_space: duration of trailer space in ns */ struct ir_raw_timings_manchester { - unsigned int leader; - unsigned int pulse_space_start:1; + unsigned int leader_pulse; + unsigned int leader_space; unsigned int clock; unsigned int invert:1; unsigned int trailer_space; @@ -269,13 +312,40 @@ void ir_raw_event_free(struct rc_dev *dev); void ir_raw_event_unregister(struct rc_dev *dev); int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler); void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler); +void ir_raw_load_modules(u64 *protocols); void ir_raw_init(void); /* - * Decoder initialization code - * - * Those load logic are called during ir-core init, and automatically - * loads the compiled decoders for their usage with IR raw events + * lirc interface + */ +#ifdef CONFIG_LIRC +int lirc_dev_init(void); +void lirc_dev_exit(void); +void lirc_raw_event(struct rc_dev *dev, struct ir_raw_event ev); +void lirc_scancode_event(struct rc_dev *dev, struct lirc_scancode *lsc); +int lirc_register(struct rc_dev *dev); +void lirc_unregister(struct rc_dev *dev); +struct rc_dev *rc_dev_get_from_fd(int fd, bool write); +#else +static inline int lirc_dev_init(void) { return 0; } +static inline void lirc_dev_exit(void) {} +static inline void lirc_raw_event(struct rc_dev *dev, + struct ir_raw_event ev) { } +static inline void lirc_scancode_event(struct rc_dev *dev, + struct lirc_scancode *lsc) { } +static inline int lirc_register(struct rc_dev *dev) { return 0; } +static inline void lirc_unregister(struct rc_dev *dev) { } +#endif + +/* + * bpf interface */ +#ifdef CONFIG_BPF_LIRC_MODE2 +void lirc_bpf_free(struct rc_dev *dev); +void lirc_bpf_run(struct rc_dev *dev, u32 sample); +#else +static inline void lirc_bpf_free(struct rc_dev *dev) { } +static inline void lirc_bpf_run(struct rc_dev *dev, u32 sample) { } +#endif #endif /* _RC_CORE_PRIV */ |