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Revision 46f5c0cc3af0ecb76224a91d2997d74e35ff7821 authored by Linus Torvalds on 20 July 2019, 18:06:12 UTC, committed by Linus Torvalds on 20 July 2019, 18:06:12 UTC 
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
 
Pull perf tooling updates from Thomas Gleixner:
 "A set of perf improvements and fixes:

  perf db-export:
   - Improvements in how COMM details are exported to databases for post
     processing and use in the sql-viewer.py UI.

   - Export switch events to the database.

  BPF:
   - Bump rlimit(MEMLOCK) for 'perf test bpf' and 'perf trace', just
     like selftests/bpf/bpf_rlimit.h do, which makes errors due to
     exhaustion of this limit, which are kinda cryptic (EPERM sometimes)
     less frequent.

  perf version:
   - Fix segfault due to missing OPT_END(), noticed on PowerPC.

  perf vendor events:
   - Add JSON files for IBM s/390 machine type 8561.

  perf cs-etm (ARM):
   - Fix two cases of error returns not bing done properly: Invalid
     ERR_PTR() use and loss of propagation error codes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (28 commits)
  perf version: Fix segfault due to missing OPT_END()
  perf vendor events s390: Add JSON files for machine type 8561
  perf cs-etm: Return errcode in cs_etm__process_auxtrace_info()
  perf cs-etm: Remove errnoeous ERR_PTR() usage in cs_etm__process_auxtrace_info
  perf scripts python: export-to-postgresql.py: Export switch events
  perf scripts python: export-to-sqlite.py: Export switch events
  perf db-export: Export switch events
  perf db-export: Factor out db_export__threads()
  perf script: Add scripting operation process_switch()
  perf scripts python: exported-sql-viewer.py: Use new 'has_calls' column
  perf scripts python: exported-sql-viewer.py: Remove redundant semi-colons
  perf scripts python: export-to-postgresql.py: Add has_calls column to comms table
  perf scripts python: export-to-sqlite.py: Add has_calls column to comms table
  perf db-export: Also export thread's current comm
  perf db-export: Factor out db_export__comm()
  perf scripts python: export-to-postgresql.py: Export comm details
  perf scripts python: export-to-sqlite.py: Export comm details
  perf db-export: Export comm details
  perf db-export: Fix a white space issue in db_export__sample()
  perf db-export: Move export__comm_thread into db_export__sample()
  ...
2 parent s e6023ad + e0c5c5e
Raw File
cec-pin.h 
/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * cec-pin.h - low-level CEC pin control
 *
 * Copyright 2017 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
 */

#ifndef LINUX_CEC_PIN_H
#define LINUX_CEC_PIN_H

#include <linux/types.h>
#include <media/cec.h>

/**
 * struct cec_pin_ops - low-level CEC pin operations
 * @read:	read the CEC pin. Return true if high, false if low.
 * @low:	drive the CEC pin low.
 * @high:	stop driving the CEC pin. The pull-up will drive the pin
 *		high, unless someone else is driving the pin low.
 * @enable_irq:	optional, enable the interrupt to detect pin voltage changes.
 * @disable_irq: optional, disable the interrupt.
 * @free:	optional. Free any allocated resources. Called when the
 *		adapter is deleted.
 * @status:	optional, log status information.
 * @read_hpd:	read the HPD pin. Return true if high, false if low or
 *		an error if negative. If NULL or -ENOTTY is returned,
 *		then this is not supported.
 * @read_5v:	read the 5V pin. Return true if high, false if low or
 *		an error if negative. If NULL or -ENOTTY is returned,
 *		then this is not supported.
 *
 * These operations are used by the cec pin framework to manipulate
 * the CEC pin.
 */
struct cec_pin_ops {
	bool (*read)(struct cec_adapter *adap);
	void (*low)(struct cec_adapter *adap);
	void (*high)(struct cec_adapter *adap);
	bool (*enable_irq)(struct cec_adapter *adap);
	void (*disable_irq)(struct cec_adapter *adap);
	void (*free)(struct cec_adapter *adap);
	void (*status)(struct cec_adapter *adap, struct seq_file *file);
	int  (*read_hpd)(struct cec_adapter *adap);
	int  (*read_5v)(struct cec_adapter *adap);
};

/**
 * cec_pin_changed() - update pin state from interrupt
 *
 * @adap:	pointer to the cec adapter
 * @value:	when true the pin is high, otherwise it is low
 *
 * If changes of the CEC voltage are detected via an interrupt, then
 * cec_pin_changed is called from the interrupt with the new value.
 */
void cec_pin_changed(struct cec_adapter *adap, bool value);

/**
 * cec_pin_allocate_adapter() - allocate a pin-based cec adapter
 *
 * @pin_ops:	low-level pin operations
 * @priv:	will be stored in adap->priv and can be used by the adapter ops.
 *		Use cec_get_drvdata(adap) to get the priv pointer.
 * @name:	the name of the CEC adapter. Note: this name will be copied.
 * @caps:	capabilities of the CEC adapter. This will be ORed with
 *		CEC_CAP_MONITOR_ALL and CEC_CAP_MONITOR_PIN.
 *
 * Allocate a cec adapter using the cec pin framework.
 *
 * Return: a pointer to the cec adapter or an error pointer
 */
struct cec_adapter *cec_pin_allocate_adapter(const struct cec_pin_ops *pin_ops,
					void *priv, const char *name, u32 caps);

#endif
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