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linuxdebug/drivers/media/pci/solo6x10/solo6x10-v4l2-enc.c

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null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2010-2013 Bluecherry, LLC <https://www.bluecherrydvr.com>
*
* Original author:
* Ben Collins <bcollins@ubuntu.com>
*
* Additional work by:
* John Brooks <john.brooks@bluecherry.net>
*/
#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/v4l2-event.h>
#include <media/videobuf2-dma-sg.h>
#include "solo6x10.h"
#include "solo6x10-tw28.h"
#include "solo6x10-jpeg.h"
#define MIN_VID_BUFFERS 2
#define FRAME_BUF_SIZE (400 * 1024)
#define MP4_QS 16
#define DMA_ALIGN 4096
/* 6010 M4V */
static u8 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 u8 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 u8 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 u8 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 u8 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 u8 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 u8 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 u8 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,
};
typedef __le32 vop_header[16];
struct solo_enc_buf {
enum solo_enc_types type;
const 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);
}
void solo_update_mode(struct solo_enc_dev *solo_enc)
{
struct solo_dev *solo_dev = solo_enc->solo_dev;
int vop_len;
u8 *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);
}
static int solo_enc_on(struct solo_enc_dev *solo_enc)
{
u8 ch = solo_enc->ch;
struct solo_dev *solo_dev = solo_enc->solo_dev;
u8 interval;
solo_update_mode(solo_enc);
/* Make sure to do a bandwidth check */
if (solo_enc->bw_weight > solo_dev->enc_bw_remain)
return -EBUSY;
solo_enc->sequence = 0;
solo_dev->enc_bw_remain -= solo_enc->bw_weight;
if (solo_enc->type == SOLO_ENC_TYPE_EXT)
solo_reg_write(solo_dev, SOLO_CAP_CH_COMP_ENA_E(ch), 1);
/* 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 void solo_enc_off(struct solo_enc_dev *solo_enc)
{
struct solo_dev *solo_dev = solo_enc->solo_dev;
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 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_dev *solo_enc, int skip,
struct sg_table *vbuf, int off, int size,
unsigned int base, unsigned int base_size)
{
struct solo_dev *solo_dev = solo_enc->solo_dev;
struct scatterlist *sg;
int i;
int ret;
if (WARN_ON_ONCE(size > FRAME_BUF_SIZE))
return -EINVAL;
solo_enc->desc_count = 1;
for_each_sg(vbuf->sgl, sg, vbuf->nents, i) {
struct solo_p2m_desc *desc;
dma_addr_t dma;
int len;
int left = base_size - off;
desc = &solo_enc->desc_items[solo_enc->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;
solo_enc->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 (solo_enc->desc_count >= (solo_enc->desc_nelts - 1)) {
ret = solo_p2m_dma_desc(solo_dev, solo_enc->desc_items,
solo_enc->desc_dma,
solo_enc->desc_count - 1);
if (ret)
return ret;
solo_enc->desc_count = 1;
}
}
if (solo_enc->desc_count <= 1)
return 0;
return solo_p2m_dma_desc(solo_dev, solo_enc->desc_items,
solo_enc->desc_dma, solo_enc->desc_count - 1);
}
/* Extract values from VOP header - VE_STATUSxx */
static inline __always_unused int vop_interlaced(const vop_header *vh)
{
return (__le32_to_cpu((*vh)[0]) >> 30) & 1;
}
static inline __always_unused u8 vop_channel(const vop_header *vh)
{
return (__le32_to_cpu((*vh)[0]) >> 24) & 0x1F;
}
static inline u8 vop_type(const vop_header *vh)
{
return (__le32_to_cpu((*vh)[0]) >> 22) & 3;
}
static inline u32 vop_mpeg_size(const vop_header *vh)
{
return __le32_to_cpu((*vh)[0]) & 0xFFFFF;
}
static inline u8 __always_unused vop_hsize(const vop_header *vh)
{
return (__le32_to_cpu((*vh)[1]) >> 8) & 0xFF;
}
static inline u8 __always_unused vop_vsize(const vop_header *vh)
{
return __le32_to_cpu((*vh)[1]) & 0xFF;
}
static inline u32 vop_mpeg_offset(const vop_header *vh)
{
return __le32_to_cpu((*vh)[2]);
}
static inline u32 vop_jpeg_offset(const vop_header *vh)
{
return __le32_to_cpu((*vh)[3]);
}
static inline u32 vop_jpeg_size(const vop_header *vh)
{
return __le32_to_cpu((*vh)[4]) & 0xFFFFF;
}
static inline u32 __always_unused vop_sec(const vop_header *vh)
{
return __le32_to_cpu((*vh)[5]);
}
static inline __always_unused u32 vop_usec(const vop_header *vh)
{
return __le32_to_cpu((*vh)[6]);
}
static int solo_fill_jpeg(struct solo_enc_dev *solo_enc,
struct vb2_buffer *vb, const vop_header *vh)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct solo_dev *solo_dev = solo_enc->solo_dev;
struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
int frame_size;
vbuf->flags |= V4L2_BUF_FLAG_KEYFRAME;
if (vb2_plane_size(vb, 0) < vop_jpeg_size(vh) + solo_enc->jpeg_len)
return -EIO;
frame_size = ALIGN(vop_jpeg_size(vh) + solo_enc->jpeg_len, DMA_ALIGN);
vb2_set_plane_payload(vb, 0, vop_jpeg_size(vh) + solo_enc->jpeg_len);
return solo_send_desc(solo_enc, solo_enc->jpeg_len, sgt,
vop_jpeg_offset(vh) - SOLO_JPEG_EXT_ADDR(solo_dev),
frame_size, SOLO_JPEG_EXT_ADDR(solo_dev),
SOLO_JPEG_EXT_SIZE(solo_dev));
}
static int solo_fill_mpeg(struct solo_enc_dev *solo_enc,
struct vb2_buffer *vb, const vop_header *vh)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct solo_dev *solo_dev = solo_enc->solo_dev;
struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
int frame_off, frame_size;
int skip = 0;
if (vb2_plane_size(vb, 0) < vop_mpeg_size(vh))
return -EIO;
/* If this is a key frame, add extra header */
vbuf->flags &= ~(V4L2_BUF_FLAG_KEYFRAME | V4L2_BUF_FLAG_PFRAME |
V4L2_BUF_FLAG_BFRAME);
if (!vop_type(vh)) {
skip = solo_enc->vop_len;
vbuf->flags |= V4L2_BUF_FLAG_KEYFRAME;
vb2_set_plane_payload(vb, 0, vop_mpeg_size(vh) +
solo_enc->vop_len);
} else {
vbuf->flags |= V4L2_BUF_FLAG_PFRAME;
vb2_set_plane_payload(vb, 0, vop_mpeg_size(vh));
}
/* Now get the actual mpeg payload */
frame_off = (vop_mpeg_offset(vh) - SOLO_MP4E_EXT_ADDR(solo_dev) +
sizeof(*vh)) % SOLO_MP4E_EXT_SIZE(solo_dev);
frame_size = ALIGN(vop_mpeg_size(vh) + skip, DMA_ALIGN);
return solo_send_desc(solo_enc, skip, sgt, frame_off, frame_size,
SOLO_MP4E_EXT_ADDR(solo_dev),
SOLO_MP4E_EXT_SIZE(solo_dev));
}
static int solo_enc_fillbuf(struct solo_enc_dev *solo_enc,
struct vb2_buffer *vb, struct solo_enc_buf *enc_buf)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
const vop_header *vh = enc_buf->vh;
int ret;
switch (solo_enc->fmt) {
case V4L2_PIX_FMT_MPEG4:
case V4L2_PIX_FMT_H264:
ret = solo_fill_mpeg(solo_enc, vb, vh);
break;
default: /* V4L2_PIX_FMT_MJPEG */
ret = solo_fill_jpeg(solo_enc, vb, vh);
break;
}
if (!ret) {
vbuf->sequence = solo_enc->sequence++;
vb->timestamp = ktime_get_ns();
/* Check for motion flags */
if (solo_is_motion_on(solo_enc) && enc_buf->motion) {
struct v4l2_event ev = {
.type = V4L2_EVENT_MOTION_DET,
.u.motion_det = {
.flags
= V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ,
.frame_sequence = vbuf->sequence,
.region_mask = enc_buf->motion ? 1 : 0,
},
};
v4l2_event_queue(solo_enc->vfd, &ev);
}
}
vb2_buffer_done(vb, ret ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
return ret;
}
static void solo_enc_handle_one(struct solo_enc_dev *solo_enc,
struct solo_enc_buf *enc_buf)
{
struct solo_vb2_buf *vb;
unsigned long flags;
mutex_lock(&solo_enc->lock);
if (solo_enc->type != enc_buf->type)
goto unlock;
spin_lock_irqsave(&solo_enc->av_lock, flags);
if (list_empty(&solo_enc->vidq_active)) {
spin_unlock_irqrestore(&solo_enc->av_lock, flags);
goto unlock;
}
vb = list_first_entry(&solo_enc->vidq_active, struct solo_vb2_buf,
list);
list_del(&vb->list);
spin_unlock_irqrestore(&solo_enc->av_lock, flags);
solo_enc_fillbuf(solo_enc, &vb->vb.vb2_buf, enc_buf);
unlock:
mutex_unlock(&solo_enc->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(vop_header)))
continue;
enc_buf.vh = solo_dev->vh_buf;
/* Sanity check */
if (vop_mpeg_offset(enc_buf.vh) !=
SOLO_MP4E_EXT_ADDR(solo_dev) + 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_handle_ring(solo_dev);
try_to_freeze();
}
remove_wait_queue(&solo_dev->ring_thread_wait, &wait);
return 0;
}
static int solo_enc_queue_setup(struct vb2_queue *q,
unsigned int *num_buffers,
unsigned int *num_planes, unsigned int sizes[],
struct device *alloc_devs[])
{
sizes[0] = FRAME_BUF_SIZE;
*num_planes = 1;
if (*num_buffers < MIN_VID_BUFFERS)
*num_buffers = MIN_VID_BUFFERS;
return 0;
}
static void solo_enc_buf_queue(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct vb2_queue *vq = vb->vb2_queue;
struct solo_enc_dev *solo_enc = vb2_get_drv_priv(vq);
struct solo_vb2_buf *solo_vb =
container_of(vbuf, struct solo_vb2_buf, vb);
spin_lock(&solo_enc->av_lock);
list_add_tail(&solo_vb->list, &solo_enc->vidq_active);
spin_unlock(&solo_enc->av_lock);
}
static int solo_ring_start(struct solo_dev *solo_dev)
{
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 (solo_dev->ring_thread) {
kthread_stop(solo_dev->ring_thread);
solo_dev->ring_thread = NULL;
}
solo_irq_off(solo_dev, SOLO_IRQ_ENCODER);
}
static int solo_enc_start_streaming(struct vb2_queue *q, unsigned int count)
{
struct solo_enc_dev *solo_enc = vb2_get_drv_priv(q);
return solo_enc_on(solo_enc);
}
static void solo_enc_stop_streaming(struct vb2_queue *q)
{
struct solo_enc_dev *solo_enc = vb2_get_drv_priv(q);
unsigned long flags;
spin_lock_irqsave(&solo_enc->av_lock, flags);
solo_enc_off(solo_enc);
while (!list_empty(&solo_enc->vidq_active)) {
struct solo_vb2_buf *buf = list_entry(
solo_enc->vidq_active.next,
struct solo_vb2_buf, list);
list_del(&buf->list);
vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
}
spin_unlock_irqrestore(&solo_enc->av_lock, flags);
}
static void solo_enc_buf_finish(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct solo_enc_dev *solo_enc = vb2_get_drv_priv(vb->vb2_queue);
struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
switch (solo_enc->fmt) {
case V4L2_PIX_FMT_MPEG4:
case V4L2_PIX_FMT_H264:
if (vbuf->flags & V4L2_BUF_FLAG_KEYFRAME)
sg_copy_from_buffer(sgt->sgl, sgt->nents,
solo_enc->vop, solo_enc->vop_len);
break;
default: /* V4L2_PIX_FMT_MJPEG */
sg_copy_from_buffer(sgt->sgl, sgt->nents,
solo_enc->jpeg_header, solo_enc->jpeg_len);
break;
}
}
static const struct vb2_ops solo_enc_video_qops = {
.queue_setup = solo_enc_queue_setup,
.buf_queue = solo_enc_buf_queue,
.buf_finish = solo_enc_buf_finish,
.start_streaming = solo_enc_start_streaming,
.stop_streaming = solo_enc_stop_streaming,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};
static int solo_enc_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
struct solo_enc_dev *solo_enc = video_drvdata(file);
strscpy(cap->driver, SOLO6X10_NAME, sizeof(cap->driver));
snprintf(cap->card, sizeof(cap->card), "Softlogic 6x10 Enc %d",
solo_enc->ch);
return 0;
}
static int solo_enc_enum_input(struct file *file, void *priv,
struct v4l2_input *input)
{
struct solo_enc_dev *solo_enc = video_drvdata(file);
struct solo_dev *solo_dev = solo_enc->solo_dev;
if (input->index)
return -EINVAL;
snprintf(input->name, sizeof(input->name), "Encoder %d",
solo_enc->ch + 1);
input->type = V4L2_INPUT_TYPE_CAMERA;
input->std = solo_enc->vfd->tvnorms;
if (!tw28_get_video_status(solo_dev, solo_enc->ch))
input->status = V4L2_IN_ST_NO_SIGNAL;
return 0;
}
static int solo_enc_set_input(struct file *file, void *priv,
unsigned int index)
{
if (index)
return -EINVAL;
return 0;
}
static int solo_enc_get_input(struct file *file, void *priv,
unsigned int *index)
{
*index = 0;
return 0;
}
static int solo_enc_enum_fmt_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
struct solo_enc_dev *solo_enc = video_drvdata(file);
int dev_type = solo_enc->solo_dev->type;
switch (f->index) {
case 0:
switch (dev_type) {
case SOLO_DEV_6010:
f->pixelformat = V4L2_PIX_FMT_MPEG4;
break;
case SOLO_DEV_6110:
f->pixelformat = V4L2_PIX_FMT_H264;
break;
}
break;
case 1:
f->pixelformat = V4L2_PIX_FMT_MJPEG;
break;
default:
return -EINVAL;
}
return 0;
}
static inline int solo_valid_pixfmt(u32 pixfmt, int dev_type)
{
return (pixfmt == V4L2_PIX_FMT_H264 && dev_type == SOLO_DEV_6110)
|| (pixfmt == V4L2_PIX_FMT_MPEG4 && dev_type == SOLO_DEV_6010)
|| pixfmt == V4L2_PIX_FMT_MJPEG ? 0 : -EINVAL;
}
static int solo_enc_try_fmt_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct solo_enc_dev *solo_enc = video_drvdata(file);
struct solo_dev *solo_dev = solo_enc->solo_dev;
struct v4l2_pix_format *pix = &f->fmt.pix;
if (solo_valid_pixfmt(pix->pixelformat, solo_dev->type))
return -EINVAL;
if (pix->width < solo_dev->video_hsize ||
pix->height < solo_dev->video_vsize << 1) {
/* Default to CIF 1/2 size */
pix->width = solo_dev->video_hsize >> 1;
pix->height = solo_dev->video_vsize;
} else {
/* Full frame */
pix->width = solo_dev->video_hsize;
pix->height = solo_dev->video_vsize << 1;
}
switch (pix->field) {
case V4L2_FIELD_NONE:
case V4L2_FIELD_INTERLACED:
break;
case V4L2_FIELD_ANY:
default:
pix->field = V4L2_FIELD_INTERLACED;
break;
}
/* Just set these */
pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
pix->sizeimage = FRAME_BUF_SIZE;
pix->bytesperline = 0;
return 0;
}
static int solo_enc_set_fmt_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct solo_enc_dev *solo_enc = video_drvdata(file);
struct solo_dev *solo_dev = solo_enc->solo_dev;
struct v4l2_pix_format *pix = &f->fmt.pix;
int ret;
if (vb2_is_busy(&solo_enc->vidq))
return -EBUSY;
ret = solo_enc_try_fmt_cap(file, priv, f);
if (ret)
return ret;
if (pix->width == solo_dev->video_hsize)
solo_enc->mode = SOLO_ENC_MODE_D1;
else
solo_enc->mode = SOLO_ENC_MODE_CIF;
/* This does not change the encoder at all */
solo_enc->fmt = pix->pixelformat;
/*
* More information is needed about these 'extended' types. As far
* as I can tell these are basically additional video streams with
* different MPEG encoding attributes that can run in parallel with
* the main stream. If so, then this should be implemented as a
* second video node. Abusing priv like this is certainly not the
* right approach.
if (pix->priv)
solo_enc->type = SOLO_ENC_TYPE_EXT;
*/
solo_update_mode(solo_enc);
return 0;
}
static int solo_enc_get_fmt_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct solo_enc_dev *solo_enc = video_drvdata(file);
struct v4l2_pix_format *pix = &f->fmt.pix;
pix->width = solo_enc->width;
pix->height = solo_enc->height;
pix->pixelformat = solo_enc->fmt;
pix->field = solo_enc->interlaced ? V4L2_FIELD_INTERLACED :
V4L2_FIELD_NONE;
pix->sizeimage = FRAME_BUF_SIZE;
pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
return 0;
}
static int solo_enc_g_std(struct file *file, void *priv, v4l2_std_id *i)
{
struct solo_enc_dev *solo_enc = video_drvdata(file);
struct solo_dev *solo_dev = solo_enc->solo_dev;
if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC)
*i = V4L2_STD_NTSC_M;
else
*i = V4L2_STD_PAL;
return 0;
}
static int solo_enc_s_std(struct file *file, void *priv, v4l2_std_id std)
{
struct solo_enc_dev *solo_enc = video_drvdata(file);
return solo_set_video_type(solo_enc->solo_dev, std & V4L2_STD_625_50);
}
static int solo_enum_framesizes(struct file *file, void *priv,
struct v4l2_frmsizeenum *fsize)
{
struct solo_enc_dev *solo_enc = video_drvdata(file);
struct solo_dev *solo_dev = solo_enc->solo_dev;
if (solo_valid_pixfmt(fsize->pixel_format, solo_dev->type))
return -EINVAL;
switch (fsize->index) {
case 0:
fsize->discrete.width = solo_dev->video_hsize >> 1;
fsize->discrete.height = solo_dev->video_vsize;
break;
case 1:
fsize->discrete.width = solo_dev->video_hsize;
fsize->discrete.height = solo_dev->video_vsize << 1;
break;
default:
return -EINVAL;
}
fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
return 0;
}
static int solo_enum_frameintervals(struct file *file, void *priv,
struct v4l2_frmivalenum *fintv)
{
struct solo_enc_dev *solo_enc = video_drvdata(file);
struct solo_dev *solo_dev = solo_enc->solo_dev;
if (solo_valid_pixfmt(fintv->pixel_format, solo_dev->type))
return -EINVAL;
if (fintv->index)
return -EINVAL;
if ((fintv->width != solo_dev->video_hsize >> 1 ||
fintv->height != solo_dev->video_vsize) &&
(fintv->width != solo_dev->video_hsize ||
fintv->height != solo_dev->video_vsize << 1))
return -EINVAL;
fintv->type = V4L2_FRMIVAL_TYPE_STEPWISE;
fintv->stepwise.min.numerator = 1;
fintv->stepwise.min.denominator = solo_dev->fps;
fintv->stepwise.max.numerator = 15;
fintv->stepwise.max.denominator = solo_dev->fps;
fintv->stepwise.step.numerator = 1;
fintv->stepwise.step.denominator = solo_dev->fps;
return 0;
}
static int solo_g_parm(struct file *file, void *priv,
struct v4l2_streamparm *sp)
{
struct solo_enc_dev *solo_enc = video_drvdata(file);
struct v4l2_captureparm *cp = &sp->parm.capture;
cp->capability = V4L2_CAP_TIMEPERFRAME;
cp->timeperframe.numerator = solo_enc->interval;
cp->timeperframe.denominator = solo_enc->solo_dev->fps;
cp->capturemode = 0;
/* XXX: Shouldn't we be able to get/set this from vb2? */
cp->readbuffers = 2;
return 0;
}
static inline int calc_interval(u8 fps, u32 n, u32 d)
{
if (!n || !d)
return 1;
if (d == fps)
return n;
n *= fps;
return min(15U, n / d + (n % d >= (fps >> 1)));
}
static int solo_s_parm(struct file *file, void *priv,
struct v4l2_streamparm *sp)
{
struct solo_enc_dev *solo_enc = video_drvdata(file);
struct v4l2_fract *t = &sp->parm.capture.timeperframe;
u8 fps = solo_enc->solo_dev->fps;
if (vb2_is_streaming(&solo_enc->vidq))
return -EBUSY;
solo_enc->interval = calc_interval(fps, t->numerator, t->denominator);
solo_update_mode(solo_enc);
return solo_g_parm(file, priv, sp);
}
static int solo_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct solo_enc_dev *solo_enc =
container_of(ctrl->handler, struct solo_enc_dev, hdl);
struct solo_dev *solo_dev = solo_enc->solo_dev;
int err;
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
case V4L2_CID_CONTRAST:
case V4L2_CID_SATURATION:
case V4L2_CID_HUE:
case V4L2_CID_SHARPNESS:
return tw28_set_ctrl_val(solo_dev, ctrl->id, solo_enc->ch,
ctrl->val);
case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
solo_enc->gop = ctrl->val;
solo_reg_write(solo_dev, SOLO_VE_CH_GOP(solo_enc->ch), solo_enc->gop);
solo_reg_write(solo_dev, SOLO_VE_CH_GOP_E(solo_enc->ch), solo_enc->gop);
return 0;
case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
solo_enc->qp = ctrl->val;
solo_reg_write(solo_dev, SOLO_VE_CH_QP(solo_enc->ch), solo_enc->qp);
solo_reg_write(solo_dev, SOLO_VE_CH_QP_E(solo_enc->ch), solo_enc->qp);
return 0;
case V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD:
solo_enc->motion_thresh = ctrl->val << 8;
if (!solo_enc->motion_global || !solo_enc->motion_enabled)
return 0;
return solo_set_motion_threshold(solo_dev, solo_enc->ch,
solo_enc->motion_thresh);
case V4L2_CID_DETECT_MD_MODE:
solo_enc->motion_global = ctrl->val == V4L2_DETECT_MD_MODE_GLOBAL;
solo_enc->motion_enabled = ctrl->val > V4L2_DETECT_MD_MODE_DISABLED;
if (ctrl->val) {
if (solo_enc->motion_global)
err = solo_set_motion_threshold(solo_dev, solo_enc->ch,
solo_enc->motion_thresh);
else
err = solo_set_motion_block(solo_dev, solo_enc->ch,
solo_enc->md_thresholds->p_cur.p_u16);
if (err)
return err;
}
solo_motion_toggle(solo_enc, ctrl->val);
return 0;
case V4L2_CID_DETECT_MD_THRESHOLD_GRID:
if (solo_enc->motion_enabled && !solo_enc->motion_global)
return solo_set_motion_block(solo_dev, solo_enc->ch,
solo_enc->md_thresholds->p_new.p_u16);
break;
case V4L2_CID_OSD_TEXT:
strscpy(solo_enc->osd_text, ctrl->p_new.p_char,
sizeof(solo_enc->osd_text));
return solo_osd_print(solo_enc);
default:
return -EINVAL;
}
return 0;
}
static int solo_subscribe_event(struct v4l2_fh *fh,
const struct v4l2_event_subscription *sub)
{
switch (sub->type) {
case V4L2_EVENT_MOTION_DET:
/* Allow for up to 30 events (1 second for NTSC) to be
* stored. */
return v4l2_event_subscribe(fh, sub, 30, NULL);
default:
return v4l2_ctrl_subscribe_event(fh, sub);
}
}
static const struct v4l2_file_operations solo_enc_fops = {
.owner = THIS_MODULE,
.open = v4l2_fh_open,
.release = vb2_fop_release,
.read = vb2_fop_read,
.poll = vb2_fop_poll,
.mmap = vb2_fop_mmap,
.unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops solo_enc_ioctl_ops = {
.vidioc_querycap = solo_enc_querycap,
.vidioc_s_std = solo_enc_s_std,
.vidioc_g_std = solo_enc_g_std,
/* Input callbacks */
.vidioc_enum_input = solo_enc_enum_input,
.vidioc_s_input = solo_enc_set_input,
.vidioc_g_input = solo_enc_get_input,
/* Video capture format callbacks */
.vidioc_enum_fmt_vid_cap = solo_enc_enum_fmt_cap,
.vidioc_try_fmt_vid_cap = solo_enc_try_fmt_cap,
.vidioc_s_fmt_vid_cap = solo_enc_set_fmt_cap,
.vidioc_g_fmt_vid_cap = solo_enc_get_fmt_cap,
/* Streaming I/O */
.vidioc_reqbufs = vb2_ioctl_reqbufs,
.vidioc_querybuf = vb2_ioctl_querybuf,
.vidioc_qbuf = vb2_ioctl_qbuf,
.vidioc_dqbuf = vb2_ioctl_dqbuf,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
/* Frame size and interval */
.vidioc_enum_framesizes = solo_enum_framesizes,
.vidioc_enum_frameintervals = solo_enum_frameintervals,
/* Video capture parameters */
.vidioc_s_parm = solo_s_parm,
.vidioc_g_parm = solo_g_parm,
/* Logging and events */
.vidioc_log_status = v4l2_ctrl_log_status,
.vidioc_subscribe_event = solo_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
static const struct video_device solo_enc_template = {
.name = SOLO6X10_NAME,
.fops = &solo_enc_fops,
.ioctl_ops = &solo_enc_ioctl_ops,
.minor = -1,
.release = video_device_release,
.tvnorms = V4L2_STD_NTSC_M | V4L2_STD_PAL,
.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
V4L2_CAP_STREAMING,
};
static const struct v4l2_ctrl_ops solo_ctrl_ops = {
.s_ctrl = solo_s_ctrl,
};
static const struct v4l2_ctrl_config solo_osd_text_ctrl = {
.ops = &solo_ctrl_ops,
.id = V4L2_CID_OSD_TEXT,
.name = "OSD Text",
.type = V4L2_CTRL_TYPE_STRING,
.max = OSD_TEXT_MAX,
.step = 1,
};
/* Motion Detection Threshold matrix */
static const struct v4l2_ctrl_config solo_md_thresholds = {
.ops = &solo_ctrl_ops,
.id = V4L2_CID_DETECT_MD_THRESHOLD_GRID,
.dims = { SOLO_MOTION_SZ, SOLO_MOTION_SZ },
.def = SOLO_DEF_MOT_THRESH,
.max = 65535,
.step = 1,
};
static struct solo_enc_dev *solo_enc_alloc(struct solo_dev *solo_dev,
u8 ch, unsigned nr)
{
struct solo_enc_dev *solo_enc;
struct v4l2_ctrl_handler *hdl;
int ret;
solo_enc = kzalloc(sizeof(*solo_enc), GFP_KERNEL);
if (!solo_enc)
return ERR_PTR(-ENOMEM);
hdl = &solo_enc->hdl;
v4l2_ctrl_handler_init(hdl, 10);
v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
V4L2_CID_CONTRAST, 0, 255, 1, 128);
v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
V4L2_CID_SATURATION, 0, 255, 1, 128);
v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
V4L2_CID_HUE, 0, 255, 1, 128);
if (tw28_has_sharpness(solo_dev, ch))
v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
V4L2_CID_SHARPNESS, 0, 15, 1, 0);
v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1, 255, 1, solo_dev->fps);
v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_MIN_QP, 0, 31, 1, SOLO_DEFAULT_QP);
v4l2_ctrl_new_std_menu(hdl, &solo_ctrl_ops,
V4L2_CID_DETECT_MD_MODE,
V4L2_DETECT_MD_MODE_THRESHOLD_GRID, 0,
V4L2_DETECT_MD_MODE_DISABLED);
v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD, 0, 0xff, 1,
SOLO_DEF_MOT_THRESH >> 8);
v4l2_ctrl_new_custom(hdl, &solo_osd_text_ctrl, NULL);
solo_enc->md_thresholds =
v4l2_ctrl_new_custom(hdl, &solo_md_thresholds, NULL);
if (hdl->error) {
ret = hdl->error;
goto hdl_free;
}
solo_enc->solo_dev = solo_dev;
solo_enc->ch = ch;
mutex_init(&solo_enc->lock);
spin_lock_init(&solo_enc->av_lock);
INIT_LIST_HEAD(&solo_enc->vidq_active);
solo_enc->fmt = (solo_dev->type == SOLO_DEV_6010) ?
V4L2_PIX_FMT_MPEG4 : V4L2_PIX_FMT_H264;
solo_enc->type = SOLO_ENC_TYPE_STD;
solo_enc->qp = SOLO_DEFAULT_QP;
solo_enc->gop = solo_dev->fps;
solo_enc->interval = 1;
solo_enc->mode = SOLO_ENC_MODE_CIF;
solo_enc->motion_global = true;
solo_enc->motion_thresh = SOLO_DEF_MOT_THRESH;
solo_enc->vidq.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
solo_enc->vidq.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
solo_enc->vidq.ops = &solo_enc_video_qops;
solo_enc->vidq.mem_ops = &vb2_dma_sg_memops;
solo_enc->vidq.drv_priv = solo_enc;
solo_enc->vidq.gfp_flags = __GFP_DMA32 | __GFP_KSWAPD_RECLAIM;
solo_enc->vidq.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
solo_enc->vidq.buf_struct_size = sizeof(struct solo_vb2_buf);
solo_enc->vidq.lock = &solo_enc->lock;
solo_enc->vidq.dev = &solo_dev->pdev->dev;
ret = vb2_queue_init(&solo_enc->vidq);
if (ret)
goto hdl_free;
solo_update_mode(solo_enc);
spin_lock_init(&solo_enc->motion_lock);
/* Initialize this per encoder */
solo_enc->jpeg_len = sizeof(jpeg_header);
memcpy(solo_enc->jpeg_header, jpeg_header, solo_enc->jpeg_len);
solo_enc->desc_nelts = 32;
solo_enc->desc_items = dma_alloc_coherent(&solo_dev->pdev->dev,
sizeof(struct solo_p2m_desc) *
solo_enc->desc_nelts,
&solo_enc->desc_dma,
GFP_KERNEL);
ret = -ENOMEM;
if (solo_enc->desc_items == NULL)
goto hdl_free;
solo_enc->vfd = video_device_alloc();
if (!solo_enc->vfd)
goto pci_free;
*solo_enc->vfd = solo_enc_template;
solo_enc->vfd->v4l2_dev = &solo_dev->v4l2_dev;
solo_enc->vfd->ctrl_handler = hdl;
solo_enc->vfd->queue = &solo_enc->vidq;
solo_enc->vfd->lock = &solo_enc->lock;
video_set_drvdata(solo_enc->vfd, solo_enc);
ret = video_register_device(solo_enc->vfd, VFL_TYPE_VIDEO, nr);
if (ret < 0)
goto vdev_release;
snprintf(solo_enc->vfd->name, sizeof(solo_enc->vfd->name),
"%s-enc (%i/%i)", SOLO6X10_NAME, solo_dev->vfd->num,
solo_enc->vfd->num);
return solo_enc;
vdev_release:
video_device_release(solo_enc->vfd);
pci_free:
dma_free_coherent(&solo_enc->solo_dev->pdev->dev,
sizeof(struct solo_p2m_desc) * solo_enc->desc_nelts,
solo_enc->desc_items, solo_enc->desc_dma);
hdl_free:
v4l2_ctrl_handler_free(hdl);
kfree(solo_enc);
return ERR_PTR(ret);
}
static void solo_enc_free(struct solo_enc_dev *solo_enc)
{
if (solo_enc == NULL)
return;
dma_free_coherent(&solo_enc->solo_dev->pdev->dev,
sizeof(struct solo_p2m_desc) * solo_enc->desc_nelts,
solo_enc->desc_items, solo_enc->desc_dma);
video_unregister_device(solo_enc->vfd);
v4l2_ctrl_handler_free(&solo_enc->hdl);
kfree(solo_enc);
}
int solo_enc_v4l2_init(struct solo_dev *solo_dev, unsigned nr)
{
int i;
init_waitqueue_head(&solo_dev->ring_thread_wait);
solo_dev->vh_size = sizeof(vop_header);
solo_dev->vh_buf = dma_alloc_coherent(&solo_dev->pdev->dev,
solo_dev->vh_size,
&solo_dev->vh_dma, GFP_KERNEL);
if (solo_dev->vh_buf == NULL)
return -ENOMEM;
for (i = 0; i < solo_dev->nr_chans; i++) {
solo_dev->v4l2_enc[i] = solo_enc_alloc(solo_dev, i, nr);
if (IS_ERR(solo_dev->v4l2_enc[i]))
break;
}
if (i != solo_dev->nr_chans) {
int ret = PTR_ERR(solo_dev->v4l2_enc[i]);
while (i--)
solo_enc_free(solo_dev->v4l2_enc[i]);
dma_free_coherent(&solo_dev->pdev->dev, solo_dev->vh_size,
solo_dev->vh_buf, solo_dev->vh_dma);
solo_dev->vh_buf = NULL;
return ret;
}
if (solo_dev->type == SOLO_DEV_6010)
solo_dev->enc_bw_remain = solo_dev->fps * 4 * 4;
else
solo_dev->enc_bw_remain = solo_dev->fps * 4 * 5;
dev_info(&solo_dev->pdev->dev, "Encoders as /dev/video%d-%d\n",
solo_dev->v4l2_enc[0]->vfd->num,
solo_dev->v4l2_enc[solo_dev->nr_chans - 1]->vfd->num);
return solo_ring_start(solo_dev);
}
void solo_enc_v4l2_exit(struct solo_dev *solo_dev)
{
int i;
solo_ring_stop(solo_dev);
for (i = 0; i < solo_dev->nr_chans; i++)
solo_enc_free(solo_dev->v4l2_enc[i]);
if (solo_dev->vh_buf)
dma_free_coherent(&solo_dev->pdev->dev, solo_dev->vh_size,
solo_dev->vh_buf, solo_dev->vh_dma);
}