Merge tag 'media/v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - videobuf2 was moved to a media/common dir, as it is now used by the
   DVB subsystem too

 - Digital TV core memory mapped support interface

 - new sensor driver: ov7740

 - several improvements at ddbridge driver

 - new V4L2 driver: IPU3 CIO2 CSI-2 receiver unit, found on some Intel
   SoCs

 - new tuner driver: tda18250

 - finally got rid of all LIRC staging drivers

 - as we don't have old lirc drivers anymore, restruct the lirc device
   code

 - add support for UVC metadata

 - add a new staging driver for NVIDIA Tegra Video Decoder Engine

 - DVB kAPI headers moved to include/media

 - synchronize the kAPI and uAPI for the DVB subsystem, removing the gap
   for non-legacy APIs

 - reduce the kAPI gap for V4L2

 - lots of other driver enhancements, cleanups, etc.

* tag 'media/v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (407 commits)
  media: v4l2-compat-ioctl32.c: make ctrl_is_pointer work for subdevs
  media: v4l2-compat-ioctl32.c: refactor compat ioctl32 logic
  media: v4l2-compat-ioctl32.c: don't copy back the result for certain errors
  media: v4l2-compat-ioctl32.c: drop pr_info for unknown buffer type
  media: v4l2-compat-ioctl32.c: copy clip list in put_v4l2_window32
  media: v4l2-compat-ioctl32.c: fix ctrl_is_pointer
  media: v4l2-compat-ioctl32.c: copy m.userptr in put_v4l2_plane32
  media: v4l2-compat-ioctl32.c: avoid sizeof(type)
  media: v4l2-compat-ioctl32.c: move 'helper' functions to __get/put_v4l2_format32
  media: v4l2-compat-ioctl32.c: fix the indentation
  media: v4l2-compat-ioctl32.c: add missing VIDIOC_PREPARE_BUF
  media: v4l2-ioctl.c: don't copy back the result for -ENOTTY
  media: v4l2-ioctl.c: use check_fmt for enum/g/s/try_fmt
  media: vivid: fix module load error when enabling fb and no_error_inj=1
  media: dvb_demux: improve debug messages
  media: dvb_demux: Better handle discontinuity errors
  media: cxusb, dib0700: ignore XC2028_I2C_FLUSH
  media: ts2020: avoid integer overflows on 32 bit machines
  media: i2c: ov7740: use gpio/consumer.h instead of gpio.h
  media: entity: Add a nop variant of media_entity_cleanup
  ...

1 files changed, 212 insertions, 0 deletions

diff --git a/include/media/dmxdev.h b/include/media/dmxdev.h
new file mode 100644
index 000000000000..2f5cb2c7b6a7
--- /dev/null
+++ b/include/media/dmxdev.h
@@ -0,0 +1,212 @@
+/*
+ * dmxdev.h
+ *
+ * Copyright (C) 2000 Ralph Metzler & Marcus Metzler
+ *                    for convergence integrated media GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1
+ * of the License, or (at your option) any later version.
+ *
+ * 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 _DMXDEV_H_
+#define _DMXDEV_H_
+
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/kernel.h>
+#include <linux/time.h>
+#include <linux/timer.h>
+#include <linux/wait.h>
+#include <linux/fs.h>
+#include <linux/string.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+
+#include <linux/dvb/dmx.h>
+
+#include <media/dvbdev.h>
+#include <media/demux.h>
+#include <media/dvb_ringbuffer.h>
+#include <media/dvb_vb2.h>
+
+/**
+ * enum dmxdev_type - type of demux filter type.
+ *
+ * @DMXDEV_TYPE_NONE:	no filter set.
+ * @DMXDEV_TYPE_SEC:	section filter.
+ * @DMXDEV_TYPE_PES:	Program Elementary Stream (PES) filter.
+ */
+enum dmxdev_type {
+	DMXDEV_TYPE_NONE,
+	DMXDEV_TYPE_SEC,
+	DMXDEV_TYPE_PES,
+};
+
+/**
+ * enum dmxdev_state - state machine for the dmxdev.
+ *
+ * @DMXDEV_STATE_FREE:		indicates that the filter is freed.
+ * @DMXDEV_STATE_ALLOCATED:	indicates that the filter was allocated
+ *				to be used.
+ * @DMXDEV_STATE_SET:		indicates that the filter parameters are set.
+ * @DMXDEV_STATE_GO:		indicates that the filter is running.
+ * @DMXDEV_STATE_DONE:		indicates that a packet was already filtered
+ *				and the filter is now disabled.
+ *				Set only if %DMX_ONESHOT. See
+ *				&dmx_sct_filter_params.
+ * @DMXDEV_STATE_TIMEDOUT:	Indicates a timeout condition.
+ */
+enum dmxdev_state {
+	DMXDEV_STATE_FREE,
+	DMXDEV_STATE_ALLOCATED,
+	DMXDEV_STATE_SET,
+	DMXDEV_STATE_GO,
+	DMXDEV_STATE_DONE,
+	DMXDEV_STATE_TIMEDOUT
+};
+
+/**
+ * struct dmxdev_feed - digital TV dmxdev feed
+ *
+ * @pid:	Program ID to be filtered
+ * @ts:		pointer to &struct dmx_ts_feed
+ * @next:	&struct list_head pointing to the next feed.
+ */
+
+struct dmxdev_feed {
+	u16 pid;
+	struct dmx_ts_feed *ts;
+	struct list_head next;
+};
+
+/**
+ * struct dmxdev_filter - digital TV dmxdev filter
+ *
+ * @filter:	a union describing a dmxdev filter.
+ *		Currently used only for section filters.
+ * @filter.sec: a &struct dmx_section_filter pointer.
+ *		For section filter only.
+ * @feed:	a union describing a dmxdev feed.
+ *		Depending on the filter type, it can be either
+ *		@feed.ts or @feed.sec.
+ * @feed.ts:	a &struct list_head list.
+ *		For TS and PES feeds.
+ * @feed.sec:	a &struct dmx_section_feed pointer.
+ *		For section feed only.
+ * @params:	a union describing dmxdev filter parameters.
+ *		Depending on the filter type, it can be either
+ *		@params.sec or @params.pes.
+ * @params.sec:	a &struct dmx_sct_filter_params embedded struct.
+ *		For section filter only.
+ * @params.pes:	a &struct dmx_pes_filter_params embedded struct.
+ *		For PES filter only.
+ * @type:	type of the dmxdev filter, as defined by &enum dmxdev_type.
+ * @state:	state of the dmxdev filter, as defined by &enum dmxdev_state.
+ * @dev:	pointer to &struct dmxdev.
+ * @buffer:	an embedded &struct dvb_ringbuffer buffer.
+ * @vb2_ctx:	control struct for VB2 handler
+ * @mutex:	protects the access to &struct dmxdev_filter.
+ * @timer:	&struct timer_list embedded timer, used to check for
+ *		feed timeouts.
+ *		Only for section filter.
+ * @todo:	index for the @secheader.
+ *		Only for section filter.
+ * @secheader:	buffer cache to parse the section header.
+ *		Only for section filter.
+ */
+struct dmxdev_filter {
+	union {
+		struct dmx_section_filter *sec;
+	} filter;
+
+	union {
+		/* list of TS and PES feeds (struct dmxdev_feed) */
+		struct list_head ts;
+		struct dmx_section_feed *sec;
+	} feed;
+
+	union {
+		struct dmx_sct_filter_params sec;
+		struct dmx_pes_filter_params pes;
+	} params;
+
+	enum dmxdev_type type;
+	enum dmxdev_state state;
+	struct dmxdev *dev;
+	struct dvb_ringbuffer buffer;
+	struct dvb_vb2_ctx vb2_ctx;
+
+	struct mutex mutex;
+
+	/* only for sections */
+	struct timer_list timer;
+	int todo;
+	u8 secheader[3];
+};
+
+/**
+ * struct dmxdev - Describes a digital TV demux device.
+ *
+ * @dvbdev:		pointer to &struct dvb_device associated with
+ *			the demux device node.
+ * @dvr_dvbdev:		pointer to &struct dvb_device associated with
+ *			the dvr device node.
+ * @filter:		pointer to &struct dmxdev_filter.
+ * @demux:		pointer to &struct dmx_demux.
+ * @filternum:		number of filters.
+ * @capabilities:	demux capabilities as defined by &enum dmx_demux_caps.
+ * @exit:		flag to indicate that the demux is being released.
+ * @dvr_orig_fe:	pointer to &struct dmx_frontend.
+ * @dvr_buffer:		embedded &struct dvb_ringbuffer for DVB output.
+ * @dvr_vb2_ctx:	control struct for VB2 handler
+ * @mutex:		protects the usage of this structure.
+ * @lock:		protects access to &dmxdev->filter->data.
+ */
+struct dmxdev {
+	struct dvb_device *dvbdev;
+	struct dvb_device *dvr_dvbdev;
+
+	struct dmxdev_filter *filter;
+	struct dmx_demux *demux;
+
+	int filternum;
+	int capabilities;
+
+	unsigned int exit:1;
+#define DMXDEV_CAP_DUPLEX 1
+	struct dmx_frontend *dvr_orig_fe;
+
+	struct dvb_ringbuffer dvr_buffer;
+#define DVR_BUFFER_SIZE (10*188*1024)
+
+	struct dvb_vb2_ctx dvr_vb2_ctx;
+
+	struct mutex mutex;
+	spinlock_t lock;
+};
+
+/**
+ * dvb_dmxdev_init - initializes a digital TV demux and registers both demux
+ *	and DVR devices.
+ *
+ * @dmxdev: pointer to &struct dmxdev.
+ * @adap: pointer to &struct dvb_adapter.
+ */
+int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *adap);
+
+/**
+ * dvb_dmxdev_release - releases a digital TV demux and unregisters it.
+ *
+ * @dmxdev: pointer to &struct dmxdev.
+ */
+void dvb_dmxdev_release(struct dmxdev *dmxdev);
+
+#endif /* _DMXDEV_H_ */