Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 351 insertions, 0 deletions

diff --git a/drivers/media/rc/rc-core-priv.h b/drivers/media/rc/rc-core-priv.h
new file mode 100644
index 0000000000..ef1e95e1af
--- /dev/null
+++ b/drivers/media/rc/rc-core-priv.h
@@ -0,0 +1,351 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Remote Controller core raw events header
+ *
+ * Copyright (C) 2010 by Mauro Carvalho Chehab
+ */
+
+#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_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 mce kbd decoder */
+	int (*raw_register)(struct rc_dev *dev);
+	int (*raw_unregister)(struct rc_dev *dev);
+};
+
+struct ir_raw_event_ctrl {
+	struct list_head		list;		/* to keep track of raw clients */
+	struct task_struct		*thread;
+	/* 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 */
+	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;
+		u32 bits;
+		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;
+		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;
+		u16 old_bits;
+		unsigned count;
+		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 {
+		/* locks key up timer */
+		spinlock_t keylock;
+		struct timer_list rx_timeout;
+		int state;
+		u8 header;
+		u32 body;
+		unsigned count;
+		unsigned wanted_bits;
+	} mce_kbd;
+#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)
+{
+	return d1 > (d2 - margin);
+}
+
+static inline bool eq_margin(unsigned d1, unsigned d2, unsigned margin)
+{
+	return ((d1 > (d2 - margin)) && (d1 < (d2 + margin)));
+}
+
+static inline bool is_transition(struct ir_raw_event *x, struct ir_raw_event *y)
+{
+	return x->pulse != y->pulse;
+}
+
+static inline void decrease_duration(struct ir_raw_event *ev, unsigned duration)
+{
+	if (duration > ev->duration)
+		ev->duration = 0;
+	else
+		ev->duration -= 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.overflow;
+}
+
+#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)
+{
+	*ev = (struct ir_raw_event) {
+		.duration = duration,
+		.pulse = pulse
+	};
+}
+
+/**
+ * struct ir_raw_timings_manchester - Manchester coding timings
+ * @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_pulse;
+	unsigned int leader_space;
+	unsigned int clock;
+	unsigned int invert:1;
+	unsigned int trailer_space;
+};
+
+int ir_raw_gen_manchester(struct ir_raw_event **ev, unsigned int max,
+			  const struct ir_raw_timings_manchester *timings,
+			  unsigned int n, u64 data);
+
+/**
+ * ir_raw_gen_pulse_space() - generate pulse and space raw events.
+ * @ev:			Pointer to pointer to next free raw event.
+ *			Will be incremented for each raw event written.
+ * @max:		Pointer to number of raw events available in buffer.
+ *			Will be decremented for each raw event written.
+ * @pulse_width:	Width of pulse in ns.
+ * @space_width:	Width of space in ns.
+ *
+ * Returns:	0 on success.
+ *		-ENOBUFS if there isn't enough buffer space to write both raw
+ *		events. In this case @max events will have been written.
+ */
+static inline int ir_raw_gen_pulse_space(struct ir_raw_event **ev,
+					 unsigned int *max,
+					 unsigned int pulse_width,
+					 unsigned int space_width)
+{
+	if (!*max)
+		return -ENOBUFS;
+	init_ir_raw_event_duration((*ev)++, 1, pulse_width);
+	if (!--*max)
+		return -ENOBUFS;
+	init_ir_raw_event_duration((*ev)++, 0, space_width);
+	--*max;
+	return 0;
+}
+
+/**
+ * struct ir_raw_timings_pd - pulse-distance modulation timings
+ * @header_pulse:	duration of header pulse in ns (0 for none)
+ * @header_space:	duration of header space in ns
+ * @bit_pulse:		duration of bit pulse in ns
+ * @bit_space:		duration of bit space (for logic 0 and 1) in ns
+ * @trailer_pulse:	duration of trailer pulse in ns
+ * @trailer_space:	duration of trailer space in ns
+ * @msb_first:		1 if most significant bit is sent first
+ */
+struct ir_raw_timings_pd {
+	unsigned int header_pulse;
+	unsigned int header_space;
+	unsigned int bit_pulse;
+	unsigned int bit_space[2];
+	unsigned int trailer_pulse;
+	unsigned int trailer_space;
+	unsigned int msb_first:1;
+};
+
+int ir_raw_gen_pd(struct ir_raw_event **ev, unsigned int max,
+		  const struct ir_raw_timings_pd *timings,
+		  unsigned int n, u64 data);
+
+/**
+ * struct ir_raw_timings_pl - pulse-length modulation timings
+ * @header_pulse:	duration of header pulse in ns (0 for none)
+ * @bit_space:		duration of bit space in ns
+ * @bit_pulse:		duration of bit pulse (for logic 0 and 1) in ns
+ * @trailer_space:	duration of trailer space in ns
+ * @msb_first:		1 if most significant bit is sent first
+ */
+struct ir_raw_timings_pl {
+	unsigned int header_pulse;
+	unsigned int bit_space;
+	unsigned int bit_pulse[2];
+	unsigned int trailer_space;
+	unsigned int msb_first:1;
+};
+
+int ir_raw_gen_pl(struct ir_raw_event **ev, unsigned int max,
+		  const struct ir_raw_timings_pl *timings,
+		  unsigned int n, u64 data);
+
+/*
+ * Routines from rc-raw.c to be used internally and by decoders
+ */
+u64 ir_raw_get_allowed_protocols(void);
+int ir_raw_event_prepare(struct rc_dev *dev);
+int ir_raw_event_register(struct rc_dev *dev);
+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);
+
+/*
+ * 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);
+#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 */