mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 12:28:41 +08:00
[media] pci: Add tw5864 driver
Support for boards based on Techwell TW5864 chip which provides multichannel video & audio grabbing and encoding (H.264, MJPEG, ADPCM G.726). This submission implements only H.264 encoding of all channels at D1 resolution. Thanks to Mark Thompson <sw@jkqxz.net> for help, and for contribution of H.264 startcode emulation prevention code. Signed-off-by: Andrey Utkin <andrey.utkin@corp.bluecherry.net> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Andrey Utkin
Mauro Carvalho Chehab
parent
2ba775d0f6
commit
34d1324edd
@ -11839,6 +11839,14 @@ T: git git://linuxtv.org/media_tree.git
|
||||
S: Odd fixes
|
||||
F: drivers/media/usb/tm6000/
|
||||
|
||||
TW5864 VIDEO4LINUX DRIVER
|
||||
M: Bluecherry Maintainers <maintainers@bluecherrydvr.com>
|
||||
M: Andrey Utkin <andrey.utkin@corp.bluecherry.net>
|
||||
M: Andrey Utkin <andrey_utkin@fastmail.com>
|
||||
L: linux-media@vger.kernel.org
|
||||
S: Supported
|
||||
F: drivers/media/pci/tw5864/
|
||||
|
||||
TW68 VIDEO4LINUX DRIVER
|
||||
M: Hans Verkuil <hverkuil@xs4all.nl>
|
||||
L: linux-media@vger.kernel.org
|
||||
|
||||
@ -13,6 +13,7 @@ if MEDIA_CAMERA_SUPPORT
|
||||
source "drivers/media/pci/meye/Kconfig"
|
||||
source "drivers/media/pci/solo6x10/Kconfig"
|
||||
source "drivers/media/pci/sta2x11/Kconfig"
|
||||
source "drivers/media/pci/tw5864/Kconfig"
|
||||
source "drivers/media/pci/tw68/Kconfig"
|
||||
source "drivers/media/pci/tw686x/Kconfig"
|
||||
source "drivers/media/pci/zoran/Kconfig"
|
||||
|
||||
@ -31,3 +31,4 @@ obj-$(CONFIG_VIDEO_MEYE) += meye/
|
||||
obj-$(CONFIG_STA2X11_VIP) += sta2x11/
|
||||
obj-$(CONFIG_VIDEO_SOLO6X10) += solo6x10/
|
||||
obj-$(CONFIG_VIDEO_COBALT) += cobalt/
|
||||
obj-$(CONFIG_VIDEO_TW5864) += tw5864/
|
||||
|
||||
11
drivers/media/pci/tw5864/Kconfig
Normal file
11
drivers/media/pci/tw5864/Kconfig
Normal file
@ -0,0 +1,11 @@
|
||||
config VIDEO_TW5864
|
||||
tristate "Techwell TW5864 video/audio grabber and encoder"
|
||||
depends on VIDEO_DEV && PCI && VIDEO_V4L2
|
||||
select VIDEOBUF2_DMA_CONTIG
|
||||
---help---
|
||||
Support for boards based on Techwell TW5864 chip which provides
|
||||
multichannel video & audio grabbing and encoding (H.264, MJPEG,
|
||||
ADPCM G.726).
|
||||
|
||||
To compile this driver as a module, choose M here: the
|
||||
module will be called tw5864.
|
||||
3
drivers/media/pci/tw5864/Makefile
Normal file
3
drivers/media/pci/tw5864/Makefile
Normal file
@ -0,0 +1,3 @@
|
||||
tw5864-objs := tw5864-core.o tw5864-video.o tw5864-h264.o tw5864-util.o
|
||||
|
||||
obj-$(CONFIG_VIDEO_TW5864) += tw5864.o
|
||||
359
drivers/media/pci/tw5864/tw5864-core.c
Normal file
359
drivers/media/pci/tw5864/tw5864-core.c
Normal file
@ -0,0 +1,359 @@
|
||||
/*
|
||||
* TW5864 driver - core functions
|
||||
*
|
||||
* Copyright (C) 2016 Bluecherry, LLC <maintainers@bluecherrydvr.com>
|
||||
*
|
||||
* 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; either version 2 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.
|
||||
*/
|
||||
|
||||
#include <linux/init.h>
|
||||
#include <linux/list.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/kmod.h>
|
||||
#include <linux/sound.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/dma-mapping.h>
|
||||
#include <linux/pm.h>
|
||||
#include <linux/pci_ids.h>
|
||||
#include <linux/jiffies.h>
|
||||
#include <asm/dma.h>
|
||||
#include <media/v4l2-dev.h>
|
||||
|
||||
#include "tw5864.h"
|
||||
#include "tw5864-reg.h"
|
||||
|
||||
MODULE_DESCRIPTION("V4L2 driver module for tw5864-based multimedia capture & encoding devices");
|
||||
MODULE_AUTHOR("Bluecherry Maintainers <maintainers@bluecherrydvr.com>");
|
||||
MODULE_AUTHOR("Andrey Utkin <andrey.utkin@corp.bluecherry.net>");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
/*
|
||||
* BEWARE OF KNOWN ISSUES WITH VIDEO QUALITY
|
||||
*
|
||||
* This driver was developed by Bluecherry LLC by deducing behaviour of
|
||||
* original manufacturer's driver, from both source code and execution traces.
|
||||
* It is known that there are some artifacts on output video with this driver:
|
||||
* - on all known hardware samples: random pixels of wrong color (mostly
|
||||
* white, red or blue) appearing and disappearing on sequences of P-frames;
|
||||
* - on some hardware samples (known with H.264 core version e006:2800):
|
||||
* total madness on P-frames: blocks of wrong luminance; blocks of wrong
|
||||
* colors "creeping" across the picture.
|
||||
* There is a workaround for both issues: avoid P-frames by setting GOP size
|
||||
* to 1. To do that, run this command on device files created by this driver:
|
||||
*
|
||||
* v4l2-ctl --device /dev/videoX --set-ctrl=video_gop_size=1
|
||||
*
|
||||
* These issues are not decoding errors; all produced H.264 streams are decoded
|
||||
* properly. Streams without P-frames don't have these artifacts so it's not
|
||||
* analog-to-digital conversion issues nor internal memory errors; we conclude
|
||||
* it's internal H.264 encoder issues.
|
||||
* We cannot even check the original driver's behaviour because it has never
|
||||
* worked properly at all in our development environment. So these issues may
|
||||
* be actually related to firmware or hardware. However it may be that there's
|
||||
* just some more register settings missing in the driver which would please
|
||||
* the hardware.
|
||||
* Manufacturer didn't help much on our inquiries, but feel free to disturb
|
||||
* again the support of Intersil (owner of former Techwell).
|
||||
*/
|
||||
|
||||
/* take first free /dev/videoX indexes by default */
|
||||
static unsigned int video_nr[] = {[0 ... (TW5864_INPUTS - 1)] = -1 };
|
||||
|
||||
module_param_array(video_nr, int, NULL, 0444);
|
||||
MODULE_PARM_DESC(video_nr, "video devices numbers array");
|
||||
|
||||
/*
|
||||
* Please add any new PCI IDs to: http://pci-ids.ucw.cz. This keeps
|
||||
* the PCI ID database up to date. Note that the entries must be
|
||||
* added under vendor 0x1797 (Techwell Inc.) as subsystem IDs.
|
||||
*/
|
||||
static const struct pci_device_id tw5864_pci_tbl[] = {
|
||||
{PCI_DEVICE(PCI_VENDOR_ID_TECHWELL, PCI_DEVICE_ID_TECHWELL_5864)},
|
||||
{0,}
|
||||
};
|
||||
|
||||
void tw5864_irqmask_apply(struct tw5864_dev *dev)
|
||||
{
|
||||
tw_writel(TW5864_INTR_ENABLE_L, dev->irqmask & 0xffff);
|
||||
tw_writel(TW5864_INTR_ENABLE_H, (dev->irqmask >> 16));
|
||||
}
|
||||
|
||||
static void tw5864_interrupts_disable(struct tw5864_dev *dev)
|
||||
{
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&dev->slock, flags);
|
||||
dev->irqmask = 0;
|
||||
tw5864_irqmask_apply(dev);
|
||||
spin_unlock_irqrestore(&dev->slock, flags);
|
||||
}
|
||||
|
||||
static void tw5864_timer_isr(struct tw5864_dev *dev);
|
||||
static void tw5864_h264_isr(struct tw5864_dev *dev);
|
||||
|
||||
static irqreturn_t tw5864_isr(int irq, void *dev_id)
|
||||
{
|
||||
struct tw5864_dev *dev = dev_id;
|
||||
u32 status;
|
||||
|
||||
status = tw_readl(TW5864_INTR_STATUS_L) |
|
||||
tw_readl(TW5864_INTR_STATUS_H) << 16;
|
||||
if (!status)
|
||||
return IRQ_NONE;
|
||||
|
||||
tw_writel(TW5864_INTR_CLR_L, 0xffff);
|
||||
tw_writel(TW5864_INTR_CLR_H, 0xffff);
|
||||
|
||||
if (status & TW5864_INTR_VLC_DONE)
|
||||
tw5864_h264_isr(dev);
|
||||
|
||||
if (status & TW5864_INTR_TIMER)
|
||||
tw5864_timer_isr(dev);
|
||||
|
||||
if (!(status & (TW5864_INTR_TIMER | TW5864_INTR_VLC_DONE))) {
|
||||
dev_dbg(&dev->pci->dev, "Unknown interrupt, status 0x%08X\n",
|
||||
status);
|
||||
}
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static void tw5864_h264_isr(struct tw5864_dev *dev)
|
||||
{
|
||||
int channel = tw_readl(TW5864_DSP) & TW5864_DSP_ENC_CHN;
|
||||
struct tw5864_input *input = &dev->inputs[channel];
|
||||
int cur_frame_index, next_frame_index;
|
||||
struct tw5864_h264_frame *cur_frame, *next_frame;
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&dev->slock, flags);
|
||||
|
||||
cur_frame_index = dev->h264_buf_w_index;
|
||||
next_frame_index = (cur_frame_index + 1) % H264_BUF_CNT;
|
||||
cur_frame = &dev->h264_buf[cur_frame_index];
|
||||
next_frame = &dev->h264_buf[next_frame_index];
|
||||
|
||||
if (next_frame_index != dev->h264_buf_r_index) {
|
||||
cur_frame->vlc_len = tw_readl(TW5864_VLC_LENGTH) << 2;
|
||||
cur_frame->checksum = tw_readl(TW5864_VLC_CRC_REG);
|
||||
cur_frame->input = input;
|
||||
cur_frame->timestamp = ktime_get_ns();
|
||||
cur_frame->seqno = input->frame_seqno;
|
||||
cur_frame->gop_seqno = input->frame_gop_seqno;
|
||||
|
||||
dev->h264_buf_w_index = next_frame_index;
|
||||
tasklet_schedule(&dev->tasklet);
|
||||
|
||||
cur_frame = next_frame;
|
||||
|
||||
spin_lock_irqsave(&input->slock, flags);
|
||||
input->frame_seqno++;
|
||||
input->frame_gop_seqno++;
|
||||
if (input->frame_gop_seqno >= input->gop)
|
||||
input->frame_gop_seqno = 0;
|
||||
spin_unlock_irqrestore(&input->slock, flags);
|
||||
} else {
|
||||
dev_err(&dev->pci->dev,
|
||||
"Skipped frame on input %d because all buffers busy\n",
|
||||
channel);
|
||||
}
|
||||
|
||||
dev->encoder_busy = 0;
|
||||
|
||||
spin_unlock_irqrestore(&dev->slock, flags);
|
||||
|
||||
tw_writel(TW5864_VLC_STREAM_BASE_ADDR, cur_frame->vlc.dma_addr);
|
||||
tw_writel(TW5864_MV_STREAM_BASE_ADDR, cur_frame->mv.dma_addr);
|
||||
|
||||
/* Additional ack for this interrupt */
|
||||
tw_writel(TW5864_VLC_DSP_INTR, 0x00000001);
|
||||
tw_writel(TW5864_PCI_INTR_STATUS, TW5864_VLC_DONE_INTR);
|
||||
}
|
||||
|
||||
static void tw5864_input_deadline_update(struct tw5864_input *input)
|
||||
{
|
||||
input->new_frame_deadline = jiffies + msecs_to_jiffies(1000);
|
||||
}
|
||||
|
||||
static void tw5864_timer_isr(struct tw5864_dev *dev)
|
||||
{
|
||||
unsigned long flags;
|
||||
int i;
|
||||
int encoder_busy;
|
||||
|
||||
/* Additional ack for this interrupt */
|
||||
tw_writel(TW5864_PCI_INTR_STATUS, TW5864_TIMER_INTR);
|
||||
|
||||
spin_lock_irqsave(&dev->slock, flags);
|
||||
encoder_busy = dev->encoder_busy;
|
||||
spin_unlock_irqrestore(&dev->slock, flags);
|
||||
|
||||
if (encoder_busy)
|
||||
return;
|
||||
|
||||
/*
|
||||
* Traversing inputs in round-robin fashion, starting from next to the
|
||||
* last processed one
|
||||
*/
|
||||
for (i = 0; i < TW5864_INPUTS; i++) {
|
||||
int next_input = (i + dev->next_input) % TW5864_INPUTS;
|
||||
struct tw5864_input *input = &dev->inputs[next_input];
|
||||
int raw_buf_id; /* id of internal buf with last raw frame */
|
||||
|
||||
spin_lock_irqsave(&input->slock, flags);
|
||||
if (!input->enabled)
|
||||
goto next;
|
||||
|
||||
/* Check if new raw frame is available */
|
||||
raw_buf_id = tw_mask_shift_readl(TW5864_SENIF_ORG_FRM_PTR1, 0x3,
|
||||
2 * input->nr);
|
||||
|
||||
if (input->buf_id != raw_buf_id) {
|
||||
input->buf_id = raw_buf_id;
|
||||
tw5864_input_deadline_update(input);
|
||||
spin_unlock_irqrestore(&input->slock, flags);
|
||||
|
||||
spin_lock_irqsave(&dev->slock, flags);
|
||||
dev->encoder_busy = 1;
|
||||
dev->next_input = (next_input + 1) % TW5864_INPUTS;
|
||||
spin_unlock_irqrestore(&dev->slock, flags);
|
||||
|
||||
tw5864_request_encoded_frame(input);
|
||||
break;
|
||||
}
|
||||
|
||||
/* No new raw frame; check if channel is stuck */
|
||||
if (time_is_after_jiffies(input->new_frame_deadline)) {
|
||||
/* If stuck, request new raw frames again */
|
||||
tw_mask_shift_writel(TW5864_ENC_BUF_PTR_REC1, 0x3,
|
||||
2 * input->nr, input->buf_id + 3);
|
||||
tw5864_input_deadline_update(input);
|
||||
}
|
||||
next:
|
||||
spin_unlock_irqrestore(&input->slock, flags);
|
||||
}
|
||||
}
|
||||
|
||||
static int tw5864_initdev(struct pci_dev *pci_dev,
|
||||
const struct pci_device_id *pci_id)
|
||||
{
|
||||
struct tw5864_dev *dev;
|
||||
int err;
|
||||
|
||||
dev = devm_kzalloc(&pci_dev->dev, sizeof(*dev), GFP_KERNEL);
|
||||
if (!dev)
|
||||
return -ENOMEM;
|
||||
|
||||
snprintf(dev->name, sizeof(dev->name), "tw5864:%s", pci_name(pci_dev));
|
||||
|
||||
err = v4l2_device_register(&pci_dev->dev, &dev->v4l2_dev);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
/* pci init */
|
||||
dev->pci = pci_dev;
|
||||
err = pci_enable_device(pci_dev);
|
||||
if (err) {
|
||||
dev_err(&dev->pci->dev, "pci_enable_device() failed\n");
|
||||
goto unreg_v4l2;
|
||||
}
|
||||
|
||||
pci_set_master(pci_dev);
|
||||
|
||||
err = pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32));
|
||||
if (err) {
|
||||
dev_err(&dev->pci->dev, "32 bit PCI DMA is not supported\n");
|
||||
goto disable_pci;
|
||||
}
|
||||
|
||||
/* get mmio */
|
||||
err = pci_request_regions(pci_dev, dev->name);
|
||||
if (err) {
|
||||
dev_err(&dev->pci->dev, "Cannot request regions for MMIO\n");
|
||||
goto disable_pci;
|
||||
}
|
||||
dev->mmio = pci_ioremap_bar(pci_dev, 0);
|
||||
if (!dev->mmio) {
|
||||
err = -EIO;
|
||||
dev_err(&dev->pci->dev, "can't ioremap() MMIO memory\n");
|
||||
goto release_mmio;
|
||||
}
|
||||
|
||||
spin_lock_init(&dev->slock);
|
||||
|
||||
dev_info(&pci_dev->dev, "TW5864 hardware version: %04x\n",
|
||||
tw_readl(TW5864_HW_VERSION));
|
||||
dev_info(&pci_dev->dev, "TW5864 H.264 core version: %04x:%04x\n",
|
||||
tw_readl(TW5864_H264REV),
|
||||
tw_readl(TW5864_UNDECLARED_H264REV_PART2));
|
||||
|
||||
err = tw5864_video_init(dev, video_nr);
|
||||
if (err)
|
||||
goto unmap_mmio;
|
||||
|
||||
/* get irq */
|
||||
err = devm_request_irq(&pci_dev->dev, pci_dev->irq, tw5864_isr,
|
||||
IRQF_SHARED, "tw5864", dev);
|
||||
if (err < 0) {
|
||||
dev_err(&dev->pci->dev, "can't get IRQ %d\n", pci_dev->irq);
|
||||
goto fini_video;
|
||||
}
|
||||
|
||||
dev_info(&pci_dev->dev, "Note: there are known video quality issues. For details\n");
|
||||
dev_info(&pci_dev->dev, "see the comment in drivers/media/pci/tw5864/tw5864-core.c.\n");
|
||||
|
||||
return 0;
|
||||
|
||||
fini_video:
|
||||
tw5864_video_fini(dev);
|
||||
unmap_mmio:
|
||||
iounmap(dev->mmio);
|
||||
release_mmio:
|
||||
pci_release_regions(pci_dev);
|
||||
disable_pci:
|
||||
pci_disable_device(pci_dev);
|
||||
unreg_v4l2:
|
||||
v4l2_device_unregister(&dev->v4l2_dev);
|
||||
return err;
|
||||
}
|
||||
|
||||
static void tw5864_finidev(struct pci_dev *pci_dev)
|
||||
{
|
||||
struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
|
||||
struct tw5864_dev *dev =
|
||||
container_of(v4l2_dev, struct tw5864_dev, v4l2_dev);
|
||||
|
||||
/* shutdown subsystems */
|
||||
tw5864_interrupts_disable(dev);
|
||||
|
||||
/* unregister */
|
||||
tw5864_video_fini(dev);
|
||||
|
||||
/* release resources */
|
||||
iounmap(dev->mmio);
|
||||
release_mem_region(pci_resource_start(pci_dev, 0),
|
||||
pci_resource_len(pci_dev, 0));
|
||||
|
||||
v4l2_device_unregister(&dev->v4l2_dev);
|
||||
devm_kfree(&pci_dev->dev, dev);
|
||||
}
|
||||
|
||||
static struct pci_driver tw5864_pci_driver = {
|
||||
.name = "tw5864",
|
||||
.id_table = tw5864_pci_tbl,
|
||||
.probe = tw5864_initdev,
|
||||
.remove = tw5864_finidev,
|
||||
};
|
||||
|
||||
module_pci_driver(tw5864_pci_driver);
|
||||
259
drivers/media/pci/tw5864/tw5864-h264.c
Normal file
259
drivers/media/pci/tw5864/tw5864-h264.c
Normal file
@ -0,0 +1,259 @@
|
||||
/*
|
||||
* TW5864 driver - H.264 headers generation functions
|
||||
*
|
||||
* Copyright (C) 2016 Bluecherry, LLC <maintainers@bluecherrydvr.com>
|
||||
*
|
||||
* 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; either version 2 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.
|
||||
*/
|
||||
|
||||
#include <linux/log2.h>
|
||||
|
||||
#include "tw5864.h"
|
||||
|
||||
static u8 marker[] = { 0x00, 0x00, 0x00, 0x01 };
|
||||
|
||||
/*
|
||||
* Exponential-Golomb coding functions
|
||||
*
|
||||
* These functions are used for generation of H.264 bitstream headers.
|
||||
*
|
||||
* This code is derived from tw5864 reference driver by manufacturers, which
|
||||
* itself apparently was derived from x264 project.
|
||||
*/
|
||||
|
||||
/* Bitstream writing context */
|
||||
struct bs {
|
||||
u8 *buf; /* pointer to buffer beginning */
|
||||
u8 *buf_end; /* pointer to buffer end */
|
||||
u8 *ptr; /* pointer to current byte in buffer */
|
||||
unsigned int bits_left; /* number of available bits in current byte */
|
||||
};
|
||||
|
||||
static void bs_init(struct bs *s, void *buf, int size)
|
||||
{
|
||||
s->buf = buf;
|
||||
s->ptr = buf;
|
||||
s->buf_end = s->ptr + size;
|
||||
s->bits_left = 8;
|
||||
}
|
||||
|
||||
static int bs_len(struct bs *s)
|
||||
{
|
||||
return s->ptr - s->buf;
|
||||
}
|
||||
|
||||
static void bs_write(struct bs *s, int count, u32 bits)
|
||||
{
|
||||
if (s->ptr >= s->buf_end - 4)
|
||||
return;
|
||||
while (count > 0) {
|
||||
if (count < 32)
|
||||
bits &= (1 << count) - 1;
|
||||
if (count < s->bits_left) {
|
||||
*s->ptr = (*s->ptr << count) | bits;
|
||||
s->bits_left -= count;
|
||||
break;
|
||||
}
|
||||
*s->ptr = (*s->ptr << s->bits_left) |
|
||||
(bits >> (count - s->bits_left));
|
||||
count -= s->bits_left;
|
||||
s->ptr++;
|
||||
s->bits_left = 8;
|
||||
}
|
||||
}
|
||||
|
||||
static void bs_write1(struct bs *s, u32 bit)
|
||||
{
|
||||
if (s->ptr < s->buf_end) {
|
||||
*s->ptr <<= 1;
|
||||
*s->ptr |= bit;
|
||||
s->bits_left--;
|
||||
if (s->bits_left == 0) {
|
||||
s->ptr++;
|
||||
s->bits_left = 8;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void bs_write_ue(struct bs *s, u32 val)
|
||||
{
|
||||
if (val == 0) {
|
||||
bs_write1(s, 1);
|
||||
} else {
|
||||
val++;
|
||||
bs_write(s, 2 * fls(val) - 1, val);
|
||||
}
|
||||
}
|
||||
|
||||
static void bs_write_se(struct bs *s, int val)
|
||||
{
|
||||
bs_write_ue(s, val <= 0 ? -val * 2 : val * 2 - 1);
|
||||
}
|
||||
|
||||
static void bs_rbsp_trailing(struct bs *s)
|
||||
{
|
||||
bs_write1(s, 1);
|
||||
if (s->bits_left != 8)
|
||||
bs_write(s, s->bits_left, 0x00);
|
||||
}
|
||||
|
||||
/* H.264 headers generation functions */
|
||||
|
||||
static int tw5864_h264_gen_sps_rbsp(u8 *buf, size_t size, int width, int height)
|
||||
{
|
||||
struct bs bs, *s;
|
||||
|
||||
s = &bs;
|
||||
bs_init(s, buf, size);
|
||||
bs_write(s, 8, 0x42); /* profile_idc, baseline */
|
||||
bs_write(s, 1, 1); /* constraint_set0_flag */
|
||||
bs_write(s, 1, 1); /* constraint_set1_flag */
|
||||
bs_write(s, 1, 0); /* constraint_set2_flag */
|
||||
bs_write(s, 5, 0); /* reserved_zero_5bits */
|
||||
bs_write(s, 8, 0x1e); /* level_idc */
|
||||
bs_write_ue(s, 0); /* seq_parameter_set_id */
|
||||
bs_write_ue(s, ilog2(MAX_GOP_SIZE) - 4); /* log2_max_frame_num_minus4 */
|
||||
bs_write_ue(s, 0); /* pic_order_cnt_type */
|
||||
/* log2_max_pic_order_cnt_lsb_minus4 */
|
||||
bs_write_ue(s, ilog2(MAX_GOP_SIZE) - 4);
|
||||
bs_write_ue(s, 1); /* num_ref_frames */
|
||||
bs_write(s, 1, 0); /* gaps_in_frame_num_value_allowed_flag */
|
||||
bs_write_ue(s, width / 16 - 1); /* pic_width_in_mbs_minus1 */
|
||||
bs_write_ue(s, height / 16 - 1); /* pic_height_in_map_units_minus1 */
|
||||
bs_write(s, 1, 1); /* frame_mbs_only_flag */
|
||||
bs_write(s, 1, 0); /* direct_8x8_inference_flag */
|
||||
bs_write(s, 1, 0); /* frame_cropping_flag */
|
||||
bs_write(s, 1, 0); /* vui_parameters_present_flag */
|
||||
bs_rbsp_trailing(s);
|
||||
return bs_len(s);
|
||||
}
|
||||
|
||||
static int tw5864_h264_gen_pps_rbsp(u8 *buf, size_t size, int qp)
|
||||
{
|
||||
struct bs bs, *s;
|
||||
|
||||
s = &bs;
|
||||
bs_init(s, buf, size);
|
||||
bs_write_ue(s, 0); /* pic_parameter_set_id */
|
||||
bs_write_ue(s, 0); /* seq_parameter_set_id */
|
||||
bs_write(s, 1, 0); /* entropy_coding_mode_flag */
|
||||
bs_write(s, 1, 0); /* pic_order_present_flag */
|
||||
bs_write_ue(s, 0); /* num_slice_groups_minus1 */
|
||||
bs_write_ue(s, 0); /* i_num_ref_idx_l0_active_minus1 */
|
||||
bs_write_ue(s, 0); /* i_num_ref_idx_l1_active_minus1 */
|
||||
bs_write(s, 1, 0); /* weighted_pred_flag */
|
||||
bs_write(s, 2, 0); /* weighted_bipred_idc */
|
||||
bs_write_se(s, qp - 26); /* pic_init_qp_minus26 */
|
||||
bs_write_se(s, qp - 26); /* pic_init_qs_minus26 */
|
||||
bs_write_se(s, 0); /* chroma_qp_index_offset */
|
||||
bs_write(s, 1, 0); /* deblocking_filter_control_present_flag */
|
||||
bs_write(s, 1, 0); /* constrained_intra_pred_flag */
|
||||
bs_write(s, 1, 0); /* redundant_pic_cnt_present_flag */
|
||||
bs_rbsp_trailing(s);
|
||||
return bs_len(s);
|
||||
}
|
||||
|
||||
static int tw5864_h264_gen_slice_head(u8 *buf, size_t size,
|
||||
unsigned int idr_pic_id,
|
||||
unsigned int frame_gop_seqno,
|
||||
int *tail_nb_bits, u8 *tail)
|
||||
{
|
||||
struct bs bs, *s;
|
||||
int is_i_frame = frame_gop_seqno == 0;
|
||||
|
||||
s = &bs;
|
||||
bs_init(s, buf, size);
|
||||
bs_write_ue(s, 0); /* first_mb_in_slice */
|
||||
bs_write_ue(s, is_i_frame ? 2 : 5); /* slice_type - I or P */
|
||||
bs_write_ue(s, 0); /* pic_parameter_set_id */
|
||||
bs_write(s, ilog2(MAX_GOP_SIZE), frame_gop_seqno); /* frame_num */
|
||||
if (is_i_frame)
|
||||
bs_write_ue(s, idr_pic_id);
|
||||
|
||||
/* pic_order_cnt_lsb */
|
||||
bs_write(s, ilog2(MAX_GOP_SIZE), frame_gop_seqno);
|
||||
|
||||
if (is_i_frame) {
|
||||
bs_write1(s, 0); /* no_output_of_prior_pics_flag */
|
||||
bs_write1(s, 0); /* long_term_reference_flag */
|
||||
} else {
|
||||
bs_write1(s, 0); /* num_ref_idx_active_override_flag */
|
||||
bs_write1(s, 0); /* ref_pic_list_reordering_flag_l0 */
|
||||
bs_write1(s, 0); /* adaptive_ref_pic_marking_mode_flag */
|
||||
}
|
||||
|
||||
bs_write_se(s, 0); /* slice_qp_delta */
|
||||
|
||||
if (s->bits_left != 8) {
|
||||
*tail = ((s->ptr[0]) << s->bits_left);
|
||||
*tail_nb_bits = 8 - s->bits_left;
|
||||
} else {
|
||||
*tail = 0;
|
||||
*tail_nb_bits = 0;
|
||||
}
|
||||
|
||||
return bs_len(s);
|
||||
}
|
||||
|
||||
void tw5864_h264_put_stream_header(u8 **buf, size_t *space_left, int qp,
|
||||
int width, int height)
|
||||
{
|
||||
int nal_len;
|
||||
|
||||
/* SPS */
|
||||
memcpy(*buf, marker, sizeof(marker));
|
||||
*buf += 4;
|
||||
*space_left -= 4;
|
||||
|
||||
**buf = 0x67; /* SPS NAL header */
|
||||
*buf += 1;
|
||||
*space_left -= 1;
|
||||
|
||||
nal_len = tw5864_h264_gen_sps_rbsp(*buf, *space_left, width, height);
|
||||
*buf += nal_len;
|
||||
*space_left -= nal_len;
|
||||
|
||||
/* PPS */
|
||||
memcpy(*buf, marker, sizeof(marker));
|
||||
*buf += 4;
|
||||
*space_left -= 4;
|
||||
|
||||
**buf = 0x68; /* PPS NAL header */
|
||||
*buf += 1;
|
||||
*space_left -= 1;
|
||||
|
||||
nal_len = tw5864_h264_gen_pps_rbsp(*buf, *space_left, qp);
|
||||
*buf += nal_len;
|
||||
*space_left -= nal_len;
|
||||
}
|
||||
|
||||
void tw5864_h264_put_slice_header(u8 **buf, size_t *space_left,
|
||||
unsigned int idr_pic_id,
|
||||
unsigned int frame_gop_seqno,
|
||||
int *tail_nb_bits, u8 *tail)
|
||||
{
|
||||
int nal_len;
|
||||
|
||||
memcpy(*buf, marker, sizeof(marker));
|
||||
*buf += 4;
|
||||
*space_left -= 4;
|
||||
|
||||
/* Frame NAL header */
|
||||
**buf = (frame_gop_seqno == 0) ? 0x25 : 0x21;
|
||||
*buf += 1;
|
||||
*space_left -= 1;
|
||||
|
||||
nal_len = tw5864_h264_gen_slice_head(*buf, *space_left, idr_pic_id,
|
||||
frame_gop_seqno, tail_nb_bits,
|
||||
tail);
|
||||
*buf += nal_len;
|
||||
*space_left -= nal_len;
|
||||
}
|
||||
2133
drivers/media/pci/tw5864/tw5864-reg.h
Normal file
2133
drivers/media/pci/tw5864/tw5864-reg.h
Normal file
File diff suppressed because it is too large
Load Diff
37
drivers/media/pci/tw5864/tw5864-util.c
Normal file
37
drivers/media/pci/tw5864/tw5864-util.c
Normal file
@ -0,0 +1,37 @@
|
||||
#include "tw5864.h"
|
||||
|
||||
void tw5864_indir_writeb(struct tw5864_dev *dev, u16 addr, u8 data)
|
||||
{
|
||||
int retries = 30000;
|
||||
|
||||
while (tw_readl(TW5864_IND_CTL) & BIT(31) && --retries)
|
||||
;
|
||||
if (!retries)
|
||||
dev_err(&dev->pci->dev,
|
||||
"tw_indir_writel() retries exhausted before writing\n");
|
||||
|
||||
tw_writel(TW5864_IND_DATA, data);
|
||||
tw_writel(TW5864_IND_CTL, addr << 2 | TW5864_RW | TW5864_ENABLE);
|
||||
}
|
||||
|
||||
u8 tw5864_indir_readb(struct tw5864_dev *dev, u16 addr)
|
||||
{
|
||||
int retries = 30000;
|
||||
|
||||
while (tw_readl(TW5864_IND_CTL) & BIT(31) && --retries)
|
||||
;
|
||||
if (!retries)
|
||||
dev_err(&dev->pci->dev,
|
||||
"tw_indir_readl() retries exhausted before reading\n");
|
||||
|
||||
tw_writel(TW5864_IND_CTL, addr << 2 | TW5864_ENABLE);
|
||||
|
||||
retries = 30000;
|
||||
while (tw_readl(TW5864_IND_CTL) & BIT(31) && --retries)
|
||||
;
|
||||
if (!retries)
|
||||
dev_err(&dev->pci->dev,
|
||||
"tw_indir_readl() retries exhausted at reading\n");
|
||||
|
||||
return tw_readl(TW5864_IND_DATA);
|
||||
}
|
||||
1514
drivers/media/pci/tw5864/tw5864-video.c
Normal file
1514
drivers/media/pci/tw5864/tw5864-video.c
Normal file
File diff suppressed because it is too large
Load Diff
205
drivers/media/pci/tw5864/tw5864.h
Normal file
205
drivers/media/pci/tw5864/tw5864.h
Normal file
@ -0,0 +1,205 @@
|
||||
/*
|
||||
* TW5864 driver - common header file
|
||||
*
|
||||
* Copyright (C) 2016 Bluecherry, LLC <maintainers@bluecherrydvr.com>
|
||||
*
|
||||
* 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; either version 2 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.
|
||||
*/
|
||||
|
||||
#include <linux/pci.h>
|
||||
#include <linux/videodev2.h>
|
||||
#include <linux/notifier.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/interrupt.h>
|
||||
|
||||
#include <media/v4l2-common.h>
|
||||
#include <media/v4l2-ioctl.h>
|
||||
#include <media/v4l2-ctrls.h>
|
||||
#include <media/v4l2-device.h>
|
||||
#include <media/videobuf2-dma-sg.h>
|
||||
|
||||
#include "tw5864-reg.h"
|
||||
|
||||
#define PCI_DEVICE_ID_TECHWELL_5864 0x5864
|
||||
|
||||
#define TW5864_NORMS V4L2_STD_ALL
|
||||
|
||||
/* ----------------------------------------------------------- */
|
||||
/* card configuration */
|
||||
|
||||
#define TW5864_INPUTS 4
|
||||
|
||||
/* The TW5864 uses 192 (16x12) detection cells in full screen for motion
|
||||
* detection. Each detection cell is composed of 44 pixels and 20 lines for
|
||||
* NTSC and 24 lines for PAL.
|
||||
*/
|
||||
#define MD_CELLS_HOR 16
|
||||
#define MD_CELLS_VERT 12
|
||||
#define MD_CELLS (MD_CELLS_HOR * MD_CELLS_VERT)
|
||||
|
||||
#define H264_VLC_BUF_SIZE 0x80000
|
||||
#define H264_MV_BUF_SIZE 0x2000 /* device writes 5396 bytes */
|
||||
#define QP_VALUE 28
|
||||
#define MAX_GOP_SIZE 255
|
||||
#define GOP_SIZE MAX_GOP_SIZE
|
||||
|
||||
enum resolution {
|
||||
D1 = 1,
|
||||
HD1 = 2, /* half d1 - 360x(240|288) */
|
||||
CIF = 3,
|
||||
QCIF = 4,
|
||||
};
|
||||
|
||||
/* ----------------------------------------------------------- */
|
||||
/* device / file handle status */
|
||||
|
||||
struct tw5864_dev; /* forward delclaration */
|
||||
|
||||
/* buffer for one video/vbi/ts frame */
|
||||
struct tw5864_buf {
|
||||
struct vb2_v4l2_buffer vb;
|
||||
struct list_head list;
|
||||
|
||||
unsigned int size;
|
||||
};
|
||||
|
||||
struct tw5864_dma_buf {
|
||||
void *addr;
|
||||
dma_addr_t dma_addr;
|
||||
};
|
||||
|
||||
enum tw5864_vid_std {
|
||||
STD_NTSC = 0, /* NTSC (M) */
|
||||
STD_PAL = 1, /* PAL (B, D, G, H, I) */
|
||||
STD_SECAM = 2, /* SECAM */
|
||||
STD_NTSC443 = 3, /* NTSC4.43 */
|
||||
STD_PAL_M = 4, /* PAL (M) */
|
||||
STD_PAL_CN = 5, /* PAL (CN) */
|
||||
STD_PAL_60 = 6, /* PAL 60 */
|
||||
STD_INVALID = 7,
|
||||
STD_AUTO = 7,
|
||||
};
|
||||
|
||||
struct tw5864_input {
|
||||
int nr; /* input number */
|
||||
struct tw5864_dev *root;
|
||||
struct mutex lock; /* used for vidq and vdev */
|
||||
spinlock_t slock; /* used for sync between ISR, tasklet & V4L2 API */
|
||||
struct video_device vdev;
|
||||
struct v4l2_ctrl_handler hdl;
|
||||
struct vb2_queue vidq;
|
||||
struct list_head active;
|
||||
enum resolution resolution;
|
||||
unsigned int width, height;
|
||||
unsigned int frame_seqno;
|
||||
unsigned int frame_gop_seqno;
|
||||
unsigned int h264_idr_pic_id;
|
||||
int enabled;
|
||||
enum tw5864_vid_std std;
|
||||
v4l2_std_id v4l2_std;
|
||||
int tail_nb_bits;
|
||||
u8 tail;
|
||||
u8 *buf_cur_ptr;
|
||||
int buf_cur_space_left;
|
||||
|
||||
u32 reg_interlacing;
|
||||
u32 reg_vlc;
|
||||
u32 reg_dsp_codec;
|
||||
u32 reg_dsp;
|
||||
u32 reg_emu;
|
||||
u32 reg_dsp_qp;
|
||||
u32 reg_dsp_ref_mvp_lambda;
|
||||
u32 reg_dsp_i4x4_weight;
|
||||
u32 buf_id;
|
||||
|
||||
struct tw5864_buf *vb;
|
||||
|
||||
struct v4l2_ctrl *md_threshold_grid_ctrl;
|
||||
u16 md_threshold_grid_values[12 * 16];
|
||||
int qp;
|
||||
int gop;
|
||||
|
||||
/*
|
||||
* In (1/MAX_FPS) units.
|
||||
* For max FPS (default), set to 1.
|
||||
* For 1 FPS, set to e.g. 32.
|
||||
*/
|
||||
int frame_interval;
|
||||
unsigned long new_frame_deadline;
|
||||
};
|
||||
|
||||
struct tw5864_h264_frame {
|
||||
struct tw5864_dma_buf vlc;
|
||||
struct tw5864_dma_buf mv;
|
||||
int vlc_len;
|
||||
u32 checksum;
|
||||
struct tw5864_input *input;
|
||||
u64 timestamp;
|
||||
unsigned int seqno;
|
||||
unsigned int gop_seqno;
|
||||
};
|
||||
|
||||
/* global device status */
|
||||
struct tw5864_dev {
|
||||
spinlock_t slock; /* used for sync between ISR, tasklet & V4L2 API */
|
||||
struct v4l2_device v4l2_dev;
|
||||
struct tw5864_input inputs[TW5864_INPUTS];
|
||||
#define H264_BUF_CNT 4
|
||||
struct tw5864_h264_frame h264_buf[H264_BUF_CNT];
|
||||
int h264_buf_r_index;
|
||||
int h264_buf_w_index;
|
||||
|
||||
struct tasklet_struct tasklet;
|
||||
|
||||
int encoder_busy;
|
||||
/* Input number to check next for ready raw picture (in RR fashion) */
|
||||
int next_input;
|
||||
|
||||
/* pci i/o */
|
||||
char name[64];
|
||||
struct pci_dev *pci;
|
||||
void __iomem *mmio;
|
||||
u32 irqmask;
|
||||
};
|
||||
|
||||
#define tw_readl(reg) readl(dev->mmio + reg)
|
||||
#define tw_mask_readl(reg, mask) \
|
||||
(tw_readl(reg) & (mask))
|
||||
#define tw_mask_shift_readl(reg, mask, shift) \
|
||||
(tw_mask_readl((reg), ((mask) << (shift))) >> (shift))
|
||||
|
||||
#define tw_writel(reg, value) writel((value), dev->mmio + reg)
|
||||
#define tw_mask_writel(reg, mask, value) \
|
||||
tw_writel(reg, (tw_readl(reg) & ~(mask)) | ((value) & (mask)))
|
||||
#define tw_mask_shift_writel(reg, mask, shift, value) \
|
||||
tw_mask_writel((reg), ((mask) << (shift)), ((value) << (shift)))
|
||||
|
||||
#define tw_setl(reg, bit) tw_writel((reg), tw_readl(reg) | (bit))
|
||||
#define tw_clearl(reg, bit) tw_writel((reg), tw_readl(reg) & ~(bit))
|
||||
|
||||
u8 tw5864_indir_readb(struct tw5864_dev *dev, u16 addr);
|
||||
#define tw_indir_readb(addr) tw5864_indir_readb(dev, addr)
|
||||
void tw5864_indir_writeb(struct tw5864_dev *dev, u16 addr, u8 data);
|
||||
#define tw_indir_writeb(addr, data) tw5864_indir_writeb(dev, addr, data)
|
||||
|
||||
void tw5864_irqmask_apply(struct tw5864_dev *dev);
|
||||
int tw5864_video_init(struct tw5864_dev *dev, int *video_nr);
|
||||
void tw5864_video_fini(struct tw5864_dev *dev);
|
||||
void tw5864_prepare_frame_headers(struct tw5864_input *input);
|
||||
void tw5864_h264_put_stream_header(u8 **buf, size_t *space_left, int qp,
|
||||
int width, int height);
|
||||
void tw5864_h264_put_slice_header(u8 **buf, size_t *space_left,
|
||||
unsigned int idr_pic_id,
|
||||
unsigned int frame_gop_seqno,
|
||||
int *tail_nb_bits, u8 *tail);
|
||||
void tw5864_request_encoded_frame(struct tw5864_input *input);
|
||||
Loading…
Reference in New Issue
Block a user