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Subject[PATCH RFT/RFC 38/49] staging: media: zoran: Add vb_queue
Date
This patchs adds a vb_queue without using it.
This reduce the final VB2 conversion patch.

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/staging/media/zoran/Kconfig | 1 +
drivers/staging/media/zoran/zoran.h | 30 +++
drivers/staging/media/zoran/zoran_card.c | 7 +
drivers/staging/media/zoran/zoran_driver.c | 233 +++++++++++++++++++++
4 files changed, 271 insertions(+)

diff --git a/drivers/staging/media/zoran/Kconfig b/drivers/staging/media/zoran/Kconfig
index 34a18135ede0..ddf38a931c01 100644
--- a/drivers/staging/media/zoran/Kconfig
+++ b/drivers/staging/media/zoran/Kconfig
@@ -2,6 +2,7 @@ config VIDEO_ZORAN
tristate "Zoran ZR36057/36067 Video For Linux (Deprecated)"
depends on PCI && I2C_ALGOBIT && VIDEO_V4L2 && VIRT_TO_BUS
depends on !ALPHA
+ select VIDEOBUF2_DMA_CONTIG
help
Say Y for support for MJPEG capture cards based on the Zoran
36057/36067 PCI controller chipset. This includes the Iomega
diff --git a/drivers/staging/media/zoran/zoran.h b/drivers/staging/media/zoran/zoran.h
index 727ba67afd56..294e52d78e1b 100644
--- a/drivers/staging/media/zoran/zoran.h
+++ b/drivers/staging/media/zoran/zoran.h
@@ -21,6 +21,9 @@
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-fh.h>
+#include <media/videobuf2-core.h>
+#include <media/videobuf2-v4l2.h>
+#include <media/videobuf2-dma-contig.h>

#define ZR_NORM_PAL 0
#define ZR_NORM_NTSC 1
@@ -33,6 +36,18 @@ struct zoran_sync {
u64 ts; /* timestamp */
};

+struct zr_buffer {
+ /* common v4l buffer stuff -- must be first */
+ struct vb2_v4l2_buffer vbuf;
+ struct list_head queue;
+};
+
+static inline struct zr_buffer *vb2_to_zr_buffer(struct vb2_buffer *vb)
+{
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+
+ return container_of(vbuf, struct zr_buffer, vbuf);
+}

#define ZORAN_NAME "ZORAN" /* name of the device */

@@ -104,6 +119,7 @@ enum zoran_buffer_state {
};

enum zoran_map_mode {
+ ZORAN_MAP_MODE_NONE,
ZORAN_MAP_MODE_RAW,
ZORAN_MAP_MODE_JPG_REC,
#define ZORAN_MAP_MODE_JPG ZORAN_MAP_MODE_JPG_REC
@@ -250,6 +266,7 @@ struct zoran {
struct v4l2_device v4l2_dev;
struct v4l2_ctrl_handler hdl;
struct video_device *video_dev;
+ struct vb2_queue vq;

struct i2c_adapter i2c_adapter; /* */
struct i2c_algo_bit_data i2c_algo; /* */
@@ -320,6 +337,7 @@ struct zoran {
unsigned long jpg_err_seq; /* last seq_num before error */
unsigned long jpg_err_shift;
unsigned long jpg_queued_num; /* count of frames queued since grab/play started */
+ unsigned long vbseq;

/* zr36057's code buffer table */
__le32 *stat_com; /* stat_com[i] is indexed by dma_head/tail & BUZ_MASK_STAT_COM */
@@ -350,15 +368,23 @@ struct zoran {
int num_errors;
int JPEG_max_missed;
int JPEG_min_missed;
+ unsigned int prepared;
+ unsigned int queued;

u32 last_isr;
unsigned long frame_num;
+ int running;
+ int buf_in_reserve;

wait_queue_head_t test_q;

dma_addr_t p_sc;
__le32 *stat_comb;
dma_addr_t p_scb;
+ enum zoran_map_mode map_mode;
+ struct list_head queued_bufs;
+ spinlock_t queued_bufs_lock; /* Protects queued_bufs */
+ struct zr_buffer *inuse[BUZ_NUM_STAT_COM * 2];
};

static inline struct zoran *to_zoran(struct v4l2_device *v4l2_dev)
@@ -376,3 +402,7 @@ static inline struct zoran *to_zoran(struct v4l2_device *v4l2_dev)
#define btaor(dat, mask, adr) btwrite((dat) | ((mask) & btread(adr)), adr)

#endif
+
+int zoran_queue_init(struct zoran *zr, struct vb2_queue *vq);
+void zoran_queue_exit(struct zoran *zr);
+int zr_set_buf(struct zoran *zr);
diff --git a/drivers/staging/media/zoran/zoran_card.c b/drivers/staging/media/zoran/zoran_card.c
index d956bd45194f..93318ae1803a 100644
--- a/drivers/staging/media/zoran/zoran_card.c
+++ b/drivers/staging/media/zoran/zoran_card.c
@@ -961,6 +961,9 @@ static int zr36057_init(struct zoran *zr)
* another day.
*/
zr->video_dev->vfl_dir = VFL_DIR_M2M;
+
+ zoran_queue_init(zr, &zr->vq);
+
err = video_register_device(zr->video_dev, VFL_TYPE_VIDEO, video_nr[zr->id]);
if (err < 0)
goto exit_statcomb;
@@ -996,6 +999,8 @@ static void zoran_remove(struct pci_dev *pdev)
if (!zr->initialized)
goto exit_free;

+ zoran_queue_exit(zr);
+
/* unregister videocodec bus */
if (zr->codec)
videocodec_detach(zr->codec);
@@ -1270,6 +1275,8 @@ static int zoran_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if (zr36057_init(zr) < 0)
goto zr_detach_vfe;

+ zr->map_mode = ZORAN_MAP_MODE_RAW;
+
return 0;

zr_detach_vfe:
diff --git a/drivers/staging/media/zoran/zoran_driver.c b/drivers/staging/media/zoran/zoran_driver.c
index a326c0a16e0c..2c1e70cf2f0c 100644
--- a/drivers/staging/media/zoran/zoran_driver.c
+++ b/drivers/staging/media/zoran/zoran_driver.c
@@ -2255,3 +2255,236 @@ const struct video_device zoran_template = {
.tvnorms = V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM,
};

+static int zr_vb2_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, unsigned int *nplanes,
+ unsigned int sizes[], struct device *alloc_devs[])
+{
+ struct zoran *zr = vb2_get_drv_priv(vq);
+ unsigned int size = zr->buffer_size;
+
+ pci_dbg(zr->pci_dev, "%s nbuf=%u nplanes=%u", __func__, *nbuffers, *nplanes);
+
+ zr->buf_in_reserve = 0;
+
+ if (*nbuffers < vq->min_buffers_needed)
+ *nbuffers = vq->min_buffers_needed;
+
+ if (*nplanes)
+ if (sizes[0] < size)
+ return -EINVAL;
+ else
+ return 0;
+ *nplanes = 1;
+ sizes[0] = size;
+
+ return 0;
+}
+
+static void zr_vb2_queue(struct vb2_buffer *vb)
+{
+ struct zoran *zr = vb2_get_drv_priv(vb->vb2_queue);
+ struct zr_buffer *buf = vb2_to_zr_buffer(vb);
+ unsigned long flags;
+
+ spin_lock_irqsave(&zr->queued_bufs_lock, flags);
+ list_add_tail(&buf->queue, &zr->queued_bufs);
+ zr->buf_in_reserve++;
+ spin_unlock_irqrestore(&zr->queued_bufs_lock, flags);
+ if (zr->running == ZORAN_MAP_MODE_JPG_REC)
+ zoran_feed_stat_com(zr);
+ zr->queued++;
+}
+
+static int zr_vb2_prepare(struct vb2_buffer *vb)
+{
+ struct zoran *zr = vb2_get_drv_priv(vb->vb2_queue);
+
+ zr->prepared++;
+ return 0;
+}
+
+int zr_set_buf(struct zoran *zr)
+{
+ struct zr_buffer *buf;
+ struct vb2_v4l2_buffer *vbuf;
+ dma_addr_t phys_addr;
+ unsigned long flags;
+ u32 reg;
+
+ if (zr->running == ZORAN_MAP_MODE_NONE)
+ return 0;
+
+ if (zr->inuse[0]) {
+ buf = zr->inuse[0];
+ buf->vbuf.vb2_buf.timestamp = ktime_get_ns();
+ buf->vbuf.sequence = zr->vbseq++;
+ vbuf = &buf->vbuf;
+
+ buf->vbuf.field = V4L2_FIELD_INTERLACED;
+ vb2_set_plane_payload(&buf->vbuf.vb2_buf, 0, zr->buffer_size);
+ vb2_buffer_done(&buf->vbuf.vb2_buf, VB2_BUF_STATE_DONE);
+ zr->inuse[0] = NULL;
+ }
+
+ spin_lock_irqsave(&zr->queued_bufs_lock, flags);
+ if (list_empty(&zr->queued_bufs)) {
+ btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
+ vb2_queue_error(zr->video_dev->queue);
+ spin_unlock_irqrestore(&zr->queued_bufs_lock, flags);
+ return -EINVAL;
+ }
+ buf = list_first_entry_or_null(&zr->queued_bufs, struct zr_buffer, queue);
+ if (!buf) {
+ btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
+ vb2_queue_error(zr->video_dev->queue);
+ spin_unlock_irqrestore(&zr->queued_bufs_lock, flags);
+ return -EINVAL;
+ }
+ list_del(&buf->queue);
+ spin_unlock_irqrestore(&zr->queued_bufs_lock, flags);
+
+ vbuf = &buf->vbuf;
+ vbuf->vb2_buf.state = VB2_BUF_STATE_ACTIVE;
+ phys_addr = vb2_dma_contig_plane_dma_addr(&vbuf->vb2_buf, 0);
+
+ if (!phys_addr)
+ return -EINVAL;
+
+ zr->inuse[0] = buf;
+
+ reg = phys_addr;
+ btwrite(reg, ZR36057_VDTR);
+ if (zr->v4l_settings.height > BUZ_MAX_HEIGHT / 2)
+ reg += zr->v4l_settings.bytesperline;
+ btwrite(reg, ZR36057_VDBR);
+
+ reg = 0;
+ if (zr->v4l_settings.height > BUZ_MAX_HEIGHT / 2)
+ reg += zr->v4l_settings.bytesperline;
+ reg = (reg << ZR36057_VSSFGR_DispStride);
+ reg |= ZR36057_VSSFGR_VidOvf;
+ reg |= ZR36057_VSSFGR_SnapShot;
+ reg |= ZR36057_VSSFGR_FrameGrab;
+ btwrite(reg, ZR36057_VSSFGR);
+
+ btor(ZR36057_VDCR_VidEn, ZR36057_VDCR);
+ return 0;
+}
+
+static int zr_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
+{
+ struct zoran *zr = vq->drv_priv;
+ int j;
+
+ for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
+ zr->stat_com[j] = cpu_to_le32(1);
+ zr->inuse[j] = NULL;
+ }
+
+ if (zr->map_mode != ZORAN_MAP_MODE_RAW) {
+ pci_info(zr->pci_dev, "START JPG\n");
+ zr36057_restart(zr);
+ zoran_init_hardware(zr);
+ if (zr->map_mode == ZORAN_MAP_MODE_JPG_REC)
+ zr36057_enable_jpg(zr, BUZ_MODE_MOTION_DECOMPRESS);
+ else
+ zr36057_enable_jpg(zr, BUZ_MODE_MOTION_COMPRESS);
+ zoran_feed_stat_com(zr);
+ jpeg_start(zr);
+ zr->running = zr->map_mode;
+ btor(ZR36057_ICR_IntPinEn, ZR36057_ICR);
+ return 0;
+ }
+
+ pci_info(zr->pci_dev, "START RAW\n");
+ zr36057_restart(zr);
+ zoran_init_hardware(zr);
+
+ zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
+ zr36057_set_memgrab(zr, 1);
+ zr->running = zr->map_mode;
+ btor(ZR36057_ICR_IntPinEn, ZR36057_ICR);
+ return 0;
+}
+
+static void zr_vb2_stop_streaming(struct vb2_queue *vq)
+{
+ struct zoran *zr = vq->drv_priv;
+ struct zr_buffer *buf;
+ unsigned long flags;
+ int j;
+
+ btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
+ if (zr->map_mode != ZORAN_MAP_MODE_RAW)
+ zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
+ zr36057_set_memgrab(zr, 0);
+ zr->running = ZORAN_MAP_MODE_NONE;
+
+ zoran_set_pci_master(zr, 0);
+
+ if (!pass_through) { /* Switch to color bar */
+ decoder_call(zr, video, s_stream, 0);
+ encoder_call(zr, video, s_routing, 2, 0, 0);
+ }
+
+ for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
+ zr->stat_com[j] = cpu_to_le32(1);
+ if (!zr->inuse[j])
+ continue;
+ buf = zr->inuse[j];
+ pci_dbg(zr->pci_dev, "%s clean buf %d\n", __func__, j);
+ vb2_buffer_done(&buf->vbuf.vb2_buf, VB2_BUF_STATE_ERROR);
+ zr->inuse[j] = NULL;
+ }
+
+ spin_lock_irqsave(&zr->queued_bufs_lock, flags);
+ while (!list_empty(&zr->queued_bufs)) {
+ buf = list_entry(zr->queued_bufs.next, struct zr_buffer, queue);
+ list_del(&buf->queue);
+ vb2_buffer_done(&buf->vbuf.vb2_buf, VB2_BUF_STATE_ERROR);
+ zr->buf_in_reserve--;
+ }
+ spin_unlock_irqrestore(&zr->queued_bufs_lock, flags);
+ if (zr->buf_in_reserve)
+ pci_err(zr->pci_dev, "Buffer remaining %d\n", zr->buf_in_reserve);
+ zr->map_mode = ZORAN_MAP_MODE_RAW;
+}
+
+static const struct vb2_ops zr_video_qops = {
+ .queue_setup = zr_vb2_queue_setup,
+ .buf_queue = zr_vb2_queue,
+ .buf_prepare = zr_vb2_prepare,
+ .start_streaming = zr_vb2_start_streaming,
+ .stop_streaming = zr_vb2_stop_streaming,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+};
+
+int zoran_queue_init(struct zoran *zr, struct vb2_queue *vq)
+{
+ int err;
+
+ spin_lock_init(&zr->queued_bufs_lock);
+ INIT_LIST_HEAD(&zr->queued_bufs);
+
+ vq->dev = &zr->pci_dev->dev;
+ vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ vq->io_modes = VB2_USERPTR | VB2_DMABUF | VB2_MMAP | VB2_READ | VB2_WRITE;
+ vq->drv_priv = zr;
+ vq->buf_struct_size = sizeof(struct zr_buffer);
+ vq->ops = &zr_video_qops;
+ vq->mem_ops = &vb2_dma_contig_memops;
+ vq->gfp_flags = GFP_DMA32,
+ vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+ vq->min_buffers_needed = 9;
+ vq->lock = &zr->lock;
+ err = vb2_queue_init(vq);
+ if (err)
+ return err;
+ zr->video_dev->queue = vq;
+ return 0;
+}
+
+void zoran_queue_exit(struct zoran *zr)
+{
+ vb2_queue_release(zr->video_dev->queue);
+}
--
2.26.2
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