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v4l2-enc.c
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/*
* Copyright (C) 2010-2013 Bluecherry, LLC <http://www.bluecherrydvr.com>
*
* Original author:
* Ben Collins <bcollins@ubuntu.com>
*
* Additional work by:
* John Brooks <john.brooks@bluecherry.net>
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-common.h>
#include <media/videobuf-dma-sg.h>
#include "solo6x10.h"
#include "tw28.h"
#include "solo6x10-jpeg.h"
#define MIN_VID_BUFFERS 2
#define FRAME_BUF_SIZE (196 * 1024)
#define MP4_QS 16
#define DMA_ALIGN 4096
enum solo_enc_types {
SOLO_ENC_TYPE_STD,
SOLO_ENC_TYPE_EXT,
};
struct solo_enc_fh {
struct solo_enc_dev *enc;
u32 fmt;
u8 enc_on;
enum solo_enc_types type;
struct videobuf_queue vidq;
struct list_head vidq_active;
int desc_count;
int desc_nelts;
struct solo_p2m_desc *desc_items;
dma_addr_t desc_dma;
spinlock_t av_lock;
struct list_head list;
};
struct solo_videobuf {
struct videobuf_buffer vb;
unsigned int flags;
};
/* 6010 M4V */
static unsigned char vop_6010_ntsc_d1[] = {
0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x20,
0x02, 0x48, 0x1d, 0xc0, 0x00, 0x40, 0x00, 0x40,
0x00, 0x40, 0x00, 0x80, 0x00, 0x97, 0x53, 0x04,
0x1f, 0x4c, 0x58, 0x10, 0xf0, 0x71, 0x18, 0x3f,
};
static unsigned char vop_6010_ntsc_cif[] = {
0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x20,
0x02, 0x48, 0x1d, 0xc0, 0x00, 0x40, 0x00, 0x40,
0x00, 0x40, 0x00, 0x80, 0x00, 0x97, 0x53, 0x04,
0x1f, 0x4c, 0x2c, 0x10, 0x78, 0x51, 0x18, 0x3f,
};
static unsigned char vop_6010_pal_d1[] = {
0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x20,
0x02, 0x48, 0x15, 0xc0, 0x00, 0x40, 0x00, 0x40,
0x00, 0x40, 0x00, 0x80, 0x00, 0x97, 0x53, 0x04,
0x1f, 0x4c, 0x58, 0x11, 0x20, 0x71, 0x18, 0x3f,
};
static unsigned char vop_6010_pal_cif[] = {
0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x20,
0x02, 0x48, 0x15, 0xc0, 0x00, 0x40, 0x00, 0x40,
0x00, 0x40, 0x00, 0x80, 0x00, 0x97, 0x53, 0x04,
0x1f, 0x4c, 0x2c, 0x10, 0x90, 0x51, 0x18, 0x3f,
};
/* 6110 h.264 */
static unsigned char vop_6110_ntsc_d1[] = {
0x00, 0x00, 0x00, 0x01, 0x67, 0x42, 0x00, 0x1e,
0x9a, 0x74, 0x05, 0x81, 0xec, 0x80, 0x00, 0x00,
0x00, 0x01, 0x68, 0xce, 0x32, 0x28, 0x00, 0x00,
};
static unsigned char vop_6110_ntsc_cif[] = {
0x00, 0x00, 0x00, 0x01, 0x67, 0x42, 0x00, 0x1e,
0x9a, 0x74, 0x0b, 0x0f, 0xc8, 0x00, 0x00, 0x00,
0x01, 0x68, 0xce, 0x32, 0x28, 0x00, 0x00, 0x00,
};
static unsigned char vop_6110_pal_d1[] = {
0x00, 0x00, 0x00, 0x01, 0x67, 0x42, 0x00, 0x1e,
0x9a, 0x74, 0x05, 0x80, 0x93, 0x20, 0x00, 0x00,
0x00, 0x01, 0x68, 0xce, 0x32, 0x28, 0x00, 0x00,
};
static unsigned char vop_6110_pal_cif[] = {
0x00, 0x00, 0x00, 0x01, 0x67, 0x42, 0x00, 0x1e,
0x9a, 0x74, 0x0b, 0x04, 0xb2, 0x00, 0x00, 0x00,
0x01, 0x68, 0xce, 0x32, 0x28, 0x00, 0x00, 0x00,
};
static const u32 solo_user_ctrls[] = {
V4L2_CID_BRIGHTNESS,
V4L2_CID_CONTRAST,
V4L2_CID_SATURATION,
V4L2_CID_HUE,
#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28)
V4L2_CID_SHARPNESS,
#endif
0
};
static const u32 solo_mpeg_ctrls[] = {
V4L2_CID_MPEG_VIDEO_ENCODING,
V4L2_CID_MPEG_VIDEO_GOP_SIZE,
0
};
static const u32 solo_private_ctrls[] = {
V4L2_CID_MOTION_ENABLE,
V4L2_CID_MOTION_THRESHOLD,
0
};
static const u32 solo_fmtx_ctrls[] = {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 32)
V4L2_CID_RDS_TX_RADIO_TEXT,
#endif
0
};
static const u32 *solo_ctrl_classes[] = {
solo_user_ctrls,
solo_mpeg_ctrls,
solo_fmtx_ctrls,
solo_private_ctrls,
NULL
};
struct vop_header {
/* VE_STATUS0 */
u32 mpeg_size:20, sad_motion_flag:1, video_motion_flag:1, vop_type:2,
channel:5, source_fl:1, interlace:1, progressive:1;
/* VE_STATUS1 */
u32 vsize:8, hsize:8, last_queue:4, nop0:8, scale:4;
/* VE_STATUS2 */
u32 mpeg_off;
/* VE_STATUS3 */
u32 jpeg_off;
/* VE_STATUS4 */
u32 jpeg_size:20, interval:10, nop1:2;
/* VE_STATUS5/6 */
u32 sec, usec;
/* VE_STATUS7/8/9 */
u32 nop2[3];
/* VE_STATUS10 */
u32 mpeg_size_alt:20, nop3:12;
u32 end_nops[5];
} __packed;
struct solo_enc_buf {
enum solo_enc_types type;
struct vop_header *vh;
int motion;
};
static int solo_is_motion_on(struct solo_enc_dev *solo_enc)
{
struct solo_dev *solo_dev = solo_enc->solo_dev;
return (solo_dev->motion_mask >> solo_enc->ch) & 1;
}
static int solo_motion_detected(struct solo_enc_dev *solo_enc)
{
struct solo_dev *solo_dev = solo_enc->solo_dev;
unsigned long flags;
u32 ch_mask = 1 << solo_enc->ch;
int ret = 0;
spin_lock_irqsave(&solo_enc->motion_lock, flags);
if (solo_reg_read(solo_dev, SOLO_VI_MOT_STATUS) & ch_mask) {
solo_reg_write(solo_dev, SOLO_VI_MOT_CLEAR, ch_mask);
ret = 1;
}
spin_unlock_irqrestore(&solo_enc->motion_lock, flags);
return ret;
}
static void solo_motion_toggle(struct solo_enc_dev *solo_enc, int on)
{
struct solo_dev *solo_dev = solo_enc->solo_dev;
u32 mask = 1 << solo_enc->ch;
unsigned long flags;
spin_lock_irqsave(&solo_enc->motion_lock, flags);
if (on)
solo_dev->motion_mask |= mask;
else
solo_dev->motion_mask &= ~mask;
solo_reg_write(solo_dev, SOLO_VI_MOT_CLEAR, mask);
solo_reg_write(solo_dev, SOLO_VI_MOT_ADR,
SOLO_VI_MOTION_EN(solo_dev->motion_mask) |
(SOLO_MOTION_EXT_ADDR(solo_dev) >> 16));
spin_unlock_irqrestore(&solo_enc->motion_lock, flags);
}
/* MUST be called with solo_enc->enable_lock held */
static void solo_update_mode(struct solo_enc_dev *solo_enc)
{
struct solo_dev *solo_dev = solo_enc->solo_dev;
int vop_len;
unsigned char *vop;
solo_enc->interlaced = (solo_enc->mode & 0x08) ? 1 : 0;
solo_enc->bw_weight = max(solo_dev->fps / solo_enc->interval, 1);
if (solo_enc->mode == SOLO_ENC_MODE_CIF) {
solo_enc->width = solo_dev->video_hsize >> 1;
solo_enc->height = solo_dev->video_vsize;
if (solo_dev->type == SOLO_DEV_6110) {
if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC) {
vop = vop_6110_ntsc_cif;
vop_len = sizeof(vop_6110_ntsc_cif);
} else {
vop = vop_6110_pal_cif;
vop_len = sizeof(vop_6110_pal_cif);
}
} else {
if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC) {
vop = vop_6010_ntsc_cif;
vop_len = sizeof(vop_6010_ntsc_cif);
} else {
vop = vop_6010_pal_cif;
vop_len = sizeof(vop_6010_pal_cif);
}
}
} else {
solo_enc->width = solo_dev->video_hsize;
solo_enc->height = solo_dev->video_vsize << 1;
solo_enc->bw_weight <<= 2;
if (solo_dev->type == SOLO_DEV_6110) {
if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC) {
vop = vop_6110_ntsc_d1;
vop_len = sizeof(vop_6110_ntsc_d1);
} else {
vop = vop_6110_pal_d1;
vop_len = sizeof(vop_6110_pal_d1);
}
} else {
if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC) {
vop = vop_6010_ntsc_d1;
vop_len = sizeof(vop_6010_ntsc_d1);
} else {
vop = vop_6010_pal_d1;
vop_len = sizeof(vop_6010_pal_d1);
}
}
}
memcpy(solo_enc->vop, vop, vop_len);
/* Some fixups for 6010/M4V */
if (solo_dev->type == SOLO_DEV_6010) {
u16 fps = solo_dev->fps * 1000;
u16 interval = solo_enc->interval * 1000;
vop = solo_enc->vop;
/* Frame rate and interval */
vop[22] = fps >> 4;
vop[23] = ((fps << 4) & 0xf0) | 0x0c
| ((interval >> 13) & 0x3);
vop[24] = (interval >> 5) & 0xff;
vop[25] = ((interval << 3) & 0xf8) | 0x04;
}
solo_enc->vop_len = vop_len;
/* Now handle the jpeg header */
vop = solo_enc->jpeg_header;
vop[SOF0_START + 5] = 0xff & (solo_enc->height >> 8);
vop[SOF0_START + 6] = 0xff & solo_enc->height;
vop[SOF0_START + 7] = 0xff & (solo_enc->width >> 8);
vop[SOF0_START + 8] = 0xff & solo_enc->width;
memcpy(vop + DQT_START,
jpeg_dqt[solo_g_jpeg_qp(solo_dev, solo_enc->ch)], DQT_LEN);
}
/* MUST be called with solo_enc->enable_lock held */
static int __solo_enc_on(struct solo_enc_fh *fh)
{
struct solo_enc_dev *solo_enc = fh->enc;
u8 ch = solo_enc->ch;
struct solo_dev *solo_dev = solo_enc->solo_dev;
u8 interval;
BUG_ON(!mutex_is_locked(&solo_enc->enable_lock));
if (fh->enc_on)
return 0;
solo_update_mode(solo_enc);
/* Make sure to bw check on first reader */
if (!atomic_read(&solo_enc->readers)) {
if (solo_enc->bw_weight > solo_dev->enc_bw_remain)
return -EBUSY;
else
solo_dev->enc_bw_remain -= solo_enc->bw_weight;
}
fh->enc_on = 1;
list_add(&fh->list, &solo_enc->listeners);
if (fh->type == SOLO_ENC_TYPE_EXT)
solo_reg_write(solo_dev, SOLO_CAP_CH_COMP_ENA_E(ch), 1);
/* Reset the encoder if we are the first mpeg reader, else only reset
* on the first mjpeg reader. */
if (fh->fmt == V4L2_PIX_FMT_MPEG) {
atomic_inc(&solo_enc->readers);
if (atomic_inc_return(&solo_enc->mpeg_readers) > 1)
return 0;
} else if (atomic_inc_return(&solo_enc->readers) > 1) {
return 0;
}
/* Disable all encoding for this channel */
solo_reg_write(solo_dev, SOLO_CAP_CH_SCALE(ch), 0);
/* Common for both std and ext encoding */
solo_reg_write(solo_dev, SOLO_VE_CH_INTL(ch),
solo_enc->interlaced ? 1 : 0);
if (solo_enc->interlaced)
interval = solo_enc->interval - 1;
else
interval = solo_enc->interval;
/* Standard encoding only */
solo_reg_write(solo_dev, SOLO_VE_CH_GOP(ch), solo_enc->gop);
solo_reg_write(solo_dev, SOLO_VE_CH_QP(ch), solo_enc->qp);
solo_reg_write(solo_dev, SOLO_CAP_CH_INTV(ch), interval);
/* Extended encoding only */
solo_reg_write(solo_dev, SOLO_VE_CH_GOP_E(ch), solo_enc->gop);
solo_reg_write(solo_dev, SOLO_VE_CH_QP_E(ch), solo_enc->qp);
solo_reg_write(solo_dev, SOLO_CAP_CH_INTV_E(ch), interval);
/* Enables the standard encoder */
solo_reg_write(solo_dev, SOLO_CAP_CH_SCALE(ch), solo_enc->mode);
return 0;
}
static int solo_enc_on(struct solo_enc_fh *fh)
{
struct solo_enc_dev *solo_enc = fh->enc;
int ret;
mutex_lock(&solo_enc->enable_lock);
ret = __solo_enc_on(fh);
mutex_unlock(&solo_enc->enable_lock);
return ret;
}
static void __solo_enc_off(struct solo_enc_fh *fh)
{
struct solo_enc_dev *solo_enc = fh->enc;
struct solo_dev *solo_dev = solo_enc->solo_dev;
BUG_ON(!mutex_is_locked(&solo_enc->enable_lock));
if (!fh->enc_on)
return;
list_del(&fh->list);
fh->enc_on = 0;
if (fh->fmt == V4L2_PIX_FMT_MPEG)
atomic_dec(&solo_enc->mpeg_readers);
if (atomic_dec_return(&solo_enc->readers) > 0)
return;
solo_dev->enc_bw_remain += solo_enc->bw_weight;
solo_reg_write(solo_dev, SOLO_CAP_CH_SCALE(solo_enc->ch), 0);
solo_reg_write(solo_dev, SOLO_CAP_CH_COMP_ENA_E(solo_enc->ch), 0);
}
static void solo_enc_off(struct solo_enc_fh *fh)
{
struct solo_enc_dev *solo_enc = fh->enc;
mutex_lock(&solo_enc->enable_lock);
__solo_enc_off(fh);
mutex_unlock(&solo_enc->enable_lock);
}
static int enc_get_mpeg_dma(struct solo_dev *solo_dev, dma_addr_t dma,
unsigned int off, unsigned int size)
{
int ret;
if (off > SOLO_MP4E_EXT_SIZE(solo_dev))
return -EINVAL;
/* Single shot */
if (off + size <= SOLO_MP4E_EXT_SIZE(solo_dev)) {
return solo_p2m_dma_t(solo_dev, 0, dma,
SOLO_MP4E_EXT_ADDR(solo_dev) + off, size,
0, 0);
}
/* Buffer wrap */
ret = solo_p2m_dma_t(solo_dev, 0, dma,
SOLO_MP4E_EXT_ADDR(solo_dev) + off,
SOLO_MP4E_EXT_SIZE(solo_dev) - off, 0, 0);
if (!ret) {
ret = solo_p2m_dma_t(solo_dev, 0,
dma + SOLO_MP4E_EXT_SIZE(solo_dev) - off,
SOLO_MP4E_EXT_ADDR(solo_dev),
size + off - SOLO_MP4E_EXT_SIZE(solo_dev), 0, 0);
}
return ret;
}
/* Build a descriptor queue out of an SG list and send it to the P2M for
* processing. */
static int solo_send_desc(struct solo_enc_fh *fh, int skip,
struct videobuf_dmabuf *vbuf, int off, int size,
unsigned int base, unsigned int base_size)
{
struct solo_dev *solo_dev = fh->enc->solo_dev;
struct scatterlist *sg;
int i;
int ret;
if (WARN_ON_ONCE(size > FRAME_BUF_SIZE))
return -EINVAL;
fh->desc_count = 1;
for_each_sg(vbuf->sglist, sg, vbuf->sglen, i) {
struct solo_p2m_desc *desc;
dma_addr_t dma;
int len;
int left = base_size - off;
desc = &fh->desc_items[fh->desc_count++];
dma = sg_dma_address(sg);
len = sg_dma_len(sg);
/* We assume this is smaller than the scatter size */
BUG_ON(skip >= len);
if (skip) {
len -= skip;
dma += skip;
size -= skip;
skip = 0;
}
len = min(len, size);
if (len <= left) {
/* Single descriptor */
solo_p2m_fill_desc(desc, 0, dma, base + off,
len, 0, 0);
} else {
/* Buffer wrap */
/* XXX: Do these as separate DMA requests, to avoid
timeout errors triggered by awkwardly sized
descriptors. See
<https://github.com/bluecherrydvr/solo6x10/issues/8>
*/
ret = solo_p2m_dma_t(solo_dev, 0, dma, base + off,
left, 0, 0);
if (ret)
return ret;
ret = solo_p2m_dma_t(solo_dev, 0, dma + left, base,
len - left, 0, 0);
if (ret)
return ret;
fh->desc_count--;
}
size -= len;
if (size <= 0)
break;
off += len;
if (off >= base_size)
off -= base_size;
/* Because we may use two descriptors per loop */
if (fh->desc_count >= (fh->desc_nelts - 1)) {
ret = solo_p2m_dma_desc(solo_dev, fh->desc_items,
fh->desc_dma,
fh->desc_count - 1);
if (ret)
return ret;
fh->desc_count = 1;
}
}
if (fh->desc_count <= 1)
return 0;
return solo_p2m_dma_desc(solo_dev, fh->desc_items, fh->desc_dma,
fh->desc_count - 1);
}
static int solo_fill_jpeg(struct solo_enc_fh *fh, struct videobuf_buffer *vb,
struct videobuf_dmabuf *vbuf, struct vop_header *vh)
{
struct solo_enc_dev *solo_enc = fh->enc;
struct solo_dev *solo_dev = solo_enc->solo_dev;
struct solo_videobuf *svb = (struct solo_videobuf *)vb;
int frame_size;
svb->flags |= V4L2_BUF_FLAG_KEYFRAME;
if (vb->bsize < (vh->jpeg_size + solo_enc->jpeg_len))
return -EIO;
vb->width = solo_enc->width;
vb->height = solo_enc->height;
vb->size = vh->jpeg_size + solo_enc->jpeg_len;
sg_copy_from_buffer(vbuf->sglist, vbuf->sglen,
solo_enc->jpeg_header,
solo_enc->jpeg_len);
frame_size = (vh->jpeg_size + solo_enc->jpeg_len + (DMA_ALIGN - 1))
& ~(DMA_ALIGN - 1);
return solo_send_desc(fh, solo_enc->jpeg_len, vbuf, vh->jpeg_off,
frame_size, SOLO_JPEG_EXT_ADDR(solo_dev),
SOLO_JPEG_EXT_SIZE(solo_dev));
}
static int solo_fill_mpeg(struct solo_enc_fh *fh, struct videobuf_buffer *vb,
struct videobuf_dmabuf *vbuf, struct vop_header *vh)
{
struct solo_enc_dev *solo_enc = fh->enc;
struct solo_dev *solo_dev = solo_enc->solo_dev;
struct solo_videobuf *svb = (struct solo_videobuf *)vb;
int frame_off, frame_size;
int skip = 0;
if (vb->bsize < vh->mpeg_size)
return -EIO;
vb->width = vh->hsize << 4;
vb->height = vh->vsize << 4;
vb->size = vh->mpeg_size;
/* If this is a key frame, add extra header */
if (!vh->vop_type) {
sg_copy_from_buffer(vbuf->sglist, vbuf->sglen,
solo_enc->vop,
solo_enc->vop_len);
skip = solo_enc->vop_len;
vb->size += solo_enc->vop_len;
svb->flags |= V4L2_BUF_FLAG_KEYFRAME;
} else {
svb->flags |= V4L2_BUF_FLAG_PFRAME;
}
/* Now get the actual mpeg payload */
frame_off = (vh->mpeg_off + sizeof(*vh))
% SOLO_MP4E_EXT_SIZE(solo_dev);
frame_size = (vh->mpeg_size + skip + (DMA_ALIGN - 1))
& ~(DMA_ALIGN - 1);
return solo_send_desc(fh, skip, vbuf, frame_off, frame_size,
SOLO_MP4E_EXT_ADDR(solo_dev),
SOLO_MP4E_EXT_SIZE(solo_dev));
}
static int solo_enc_fillbuf(struct solo_enc_fh *fh,
struct videobuf_buffer *vb,
struct solo_enc_buf *enc_buf)
{
struct solo_enc_dev *solo_enc = fh->enc;
struct solo_videobuf *svb = (struct solo_videobuf *)vb;
struct videobuf_dmabuf *vbuf = NULL;
struct vop_header *vh = enc_buf->vh;
int ret;
vbuf = videobuf_to_dma(vb);
if (WARN_ON_ONCE(!vbuf)) {
ret = -EIO;
goto vbuf_error;
}
/* Setup some common flags for both types */
svb->flags = V4L2_BUF_FLAG_TIMECODE;
vb->ts.tv_sec = vh->sec;
vb->ts.tv_usec = vh->usec;
/* Check for motion flags */
if (solo_is_motion_on(solo_enc)) {
svb->flags |= V4L2_BUF_FLAG_MOTION_ON;
if (enc_buf->motion)
svb->flags |= V4L2_BUF_FLAG_MOTION_DETECTED;
}
if (fh->fmt == V4L2_PIX_FMT_MPEG)
ret = solo_fill_mpeg(fh, vb, vbuf, vh);
else
ret = solo_fill_jpeg(fh, vb, vbuf, vh);
vbuf_error:
/* On error, we push this buffer back into the queue. The
* videobuf-core doesn't handle error packets very well. Plus
* we recover nicely internally anyway. */
if (ret) {
unsigned long flags;
spin_lock_irqsave(&fh->av_lock, flags);
list_add(&vb->queue, &fh->vidq_active);
vb->state = VIDEOBUF_QUEUED;
spin_unlock_irqrestore(&fh->av_lock, flags);
} else {
vb->state = VIDEOBUF_DONE;
vb->field_count++;
vb->width = solo_enc->width;
vb->height = solo_enc->height;
wake_up(&vb->done);
}
return ret;
}
static void solo_enc_handle_one(struct solo_enc_dev *solo_enc,
struct solo_enc_buf *enc_buf)
{
struct solo_enc_fh *fh;
mutex_lock(&solo_enc->enable_lock);
list_for_each_entry(fh, &solo_enc->listeners, list) {
struct videobuf_buffer *vb;
unsigned long flags;
if (fh->type != enc_buf->type)
continue;
if (list_empty(&fh->vidq_active))
continue;
spin_lock_irqsave(&fh->av_lock, flags);
vb = list_first_entry(&fh->vidq_active,
struct videobuf_buffer, queue);
list_del(&vb->queue);
vb->state = VIDEOBUF_ACTIVE;
spin_unlock_irqrestore(&fh->av_lock, flags);
solo_enc_fillbuf(fh, vb, enc_buf);
}
mutex_unlock(&solo_enc->enable_lock);
}
void solo_enc_v4l2_isr(struct solo_dev *solo_dev)
{
wake_up_interruptible_all(&solo_dev->ring_thread_wait);
}
static void solo_handle_ring(struct solo_dev *solo_dev)
{
for (;;) {
struct solo_enc_dev *solo_enc;
struct solo_enc_buf enc_buf;
u32 mpeg_current, off;
u8 ch;
u8 cur_q;
/* Check if the hardware has any new ones in the queue */
cur_q = solo_reg_read(solo_dev, SOLO_VE_STATE(11)) & 0xff;
if (cur_q == solo_dev->enc_idx)
break;
mpeg_current = solo_reg_read(solo_dev,
SOLO_VE_MPEG4_QUE(solo_dev->enc_idx));
solo_dev->enc_idx = (solo_dev->enc_idx + 1) % MP4_QS;
ch = (mpeg_current >> 24) & 0x1f;
off = mpeg_current & 0x00ffffff;
if (ch >= SOLO_MAX_CHANNELS) {
ch -= SOLO_MAX_CHANNELS;
enc_buf.type = SOLO_ENC_TYPE_EXT;
} else
enc_buf.type = SOLO_ENC_TYPE_STD;
solo_enc = solo_dev->v4l2_enc[ch];
if (solo_enc == NULL) {
dev_err(&solo_dev->pdev->dev,
"Got spurious packet for channel %d\n", ch);
continue;
}
/* FAIL... */
if (enc_get_mpeg_dma(solo_dev, solo_dev->vh_dma, off,
sizeof(struct vop_header)))
continue;
enc_buf.vh = (struct vop_header *)solo_dev->vh_buf;
enc_buf.vh->mpeg_off -= SOLO_MP4E_EXT_ADDR(solo_dev);
enc_buf.vh->jpeg_off -= SOLO_JPEG_EXT_ADDR(solo_dev);
/* Sanity check */
if (enc_buf.vh->mpeg_off != off)
continue;
if (solo_motion_detected(solo_enc))
enc_buf.motion = 1;
else
enc_buf.motion = 0;
solo_enc_handle_one(solo_enc, &enc_buf);
}
}
static int solo_ring_thread(void *data)
{
struct solo_dev *solo_dev = data;
DECLARE_WAITQUEUE(wait, current);
set_freezable();
add_wait_queue(&solo_dev->ring_thread_wait, &wait);
for (;;) {
long timeout = schedule_timeout_interruptible(HZ);
if (timeout == -ERESTARTSYS || kthread_should_stop())
break;
solo_irq_off(solo_dev, SOLO_IRQ_ENCODER);
solo_handle_ring(solo_dev);
solo_irq_on(solo_dev, SOLO_IRQ_ENCODER);
try_to_freeze();
}
remove_wait_queue(&solo_dev->ring_thread_wait, &wait);
return 0;
}
static int solo_enc_buf_setup(struct videobuf_queue *vq, unsigned int *count,
unsigned int *size)
{
*size = FRAME_BUF_SIZE;
if (*count < MIN_VID_BUFFERS)
*count = MIN_VID_BUFFERS;
return 0;
}
static int solo_enc_buf_prepare(struct videobuf_queue *vq,
struct videobuf_buffer *vb,
enum v4l2_field field)
{
vb->size = FRAME_BUF_SIZE;
if (vb->baddr != 0 && vb->bsize < vb->size)
return -EINVAL;
/* This property only change when queue is idle */
vb->field = field;
if (vb->state == VIDEOBUF_NEEDS_INIT) {
int rc = videobuf_iolock(vq, vb, NULL);
if (rc < 0) {
struct videobuf_dmabuf *dma = videobuf_to_dma(vb);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 36)
videobuf_dma_unmap(vq, dma);
#else
videobuf_dma_unmap(vq->dev, dma);
#endif
videobuf_dma_free(dma);
return rc;
}
}
vb->state = VIDEOBUF_PREPARED;
return 0;
}
static void solo_enc_buf_queue(struct videobuf_queue *vq,
struct videobuf_buffer *vb)
{
struct solo_enc_fh *fh = vq->priv_data;
vb->state = VIDEOBUF_QUEUED;
list_add_tail(&vb->queue, &fh->vidq_active);
}
static void solo_enc_buf_release(struct videobuf_queue *vq,
struct videobuf_buffer *vb)
{
struct videobuf_dmabuf *dma = videobuf_to_dma(vb);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 35)
videobuf_dma_unmap(vq, dma);
#else
videobuf_dma_unmap(vq->dev, dma);
#endif
videobuf_dma_free(dma);
vb->state = VIDEOBUF_NEEDS_INIT;
}
static const struct videobuf_queue_ops solo_enc_video_qops = {
.buf_setup = solo_enc_buf_setup,
.buf_prepare = solo_enc_buf_prepare,
.buf_queue = solo_enc_buf_queue,
.buf_release = solo_enc_buf_release,
};
static unsigned int solo_enc_poll(struct file *file,
struct poll_table_struct *wait)
{
struct solo_enc_fh *fh = file->private_data;
return videobuf_poll_stream(file, &fh->vidq, wait);
}
static int solo_enc_mmap(struct file *file, struct vm_area_struct *vma)
{
struct solo_enc_fh *fh = file->private_data;
return videobuf_mmap_mapper(&fh->vidq, vma);
}
static int solo_ring_start(struct solo_dev *solo_dev)
{
if (atomic_inc_return(&solo_dev->enc_users) > 1)
return 0;
solo_dev->ring_thread = kthread_run(solo_ring_thread, solo_dev,
SOLO6X10_NAME "_ring");
if (IS_ERR(solo_dev->ring_thread)) {
int err = PTR_ERR(solo_dev->ring_thread);
solo_dev->ring_thread = NULL;
return err;
}
solo_irq_on(solo_dev, SOLO_IRQ_ENCODER);
return 0;
}
static void solo_ring_stop(struct solo_dev *solo_dev)
{
if (atomic_dec_return(&solo_dev->enc_users) > 0)
return;
if (solo_dev->ring_thread) {
kthread_stop(solo_dev->ring_thread);
solo_dev->ring_thread = NULL;
}
solo_irq_off(solo_dev, SOLO_IRQ_ENCODER);
}
#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28)
static int solo_enc_open(struct file *file)
#else
static int solo_enc_open(struct inode *ino, struct file *file)
#endif
{
struct solo_enc_dev *solo_enc = video_drvdata(file);
struct solo_dev *solo_dev = solo_enc->solo_dev;
struct solo_enc_fh *fh;
int ret;
ret = solo_ring_start(solo_dev);
if (ret)
return ret;
fh = kzalloc(sizeof(*fh), GFP_KERNEL);
if (fh == NULL) {
solo_ring_stop(solo_dev);
return -ENOMEM;
}
fh->desc_nelts = 32;
fh->desc_items = pci_alloc_consistent(solo_dev->pdev,
sizeof(struct solo_p2m_desc) *
fh->desc_nelts, &fh->desc_dma);
if (fh->desc_items == NULL) {
kfree(fh);
solo_ring_stop(solo_dev);
return -ENOMEM;
}
fh->enc = solo_enc;
spin_lock_init(&fh->av_lock);
file->private_data = fh;
INIT_LIST_HEAD(&fh->vidq_active);
fh->fmt = V4L2_PIX_FMT_MPEG;
fh->type = SOLO_ENC_TYPE_STD;
#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 37)
videobuf_queue_sg_init(&fh->vidq, &solo_enc_video_qops,
&solo_dev->pdev->dev,
&fh->av_lock,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_INTERLACED,
sizeof(struct solo_videobuf),
fh, NULL);
#else
videobuf_queue_sg_init(&fh->vidq, &solo_enc_video_qops,
&solo_dev->pdev->dev,
&fh->av_lock,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_INTERLACED,
sizeof(struct solo_videobuf), fh);
#endif
return 0;
}
static ssize_t solo_enc_read(struct file *file, char __user *data,
size_t count, loff_t *ppos)
{
struct solo_enc_fh *fh = file->private_data;
int ret;
/* Make sure the encoder is on */
ret = solo_enc_on(fh);
if (ret)
return ret;
return videobuf_read_stream(&fh->vidq, data, count, ppos, 0,
file->f_flags & O_NONBLOCK);
}
#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28)
static int solo_enc_release(struct file *file)
#else
static int solo_enc_release(struct inode *ino, struct file *file)
#endif
{
struct solo_enc_fh *fh = file->private_data;
struct solo_dev *solo_dev = fh->enc->solo_dev;
solo_enc_off(fh);
videobuf_stop(&fh->vidq);
videobuf_mmap_free(&fh->vidq);