To simulate the behaviour of real hardware with such limitations or to
connect vivid to real hardware with such limitations, add an option to
let vivid use the dma-contig allocator instead of vmalloc.
Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
---
drivers/media/platform/vivid/Kconfig | 1 +
drivers/media/platform/vivid/vivid-core.c | 30 +++++++++++++++++++++++-----
drivers/media/platform/vivid/vivid-core.h | 1 +
drivers/media/platform/vivid/vivid-vid-cap.c | 4 +++-
drivers/media/platform/vivid/vivid-vid-out.c | 5 ++++-
5 files changed, 34 insertions(+), 7 deletions(-)
diff --git a/drivers/media/platform/vivid/Kconfig b/drivers/media/platform/vivid/Kconfig
index 3bfda25..f48c998 100644
--- a/drivers/media/platform/vivid/Kconfig
+++ b/drivers/media/platform/vivid/Kconfig
@@ -4,6 +4,7 @@ config VIDEO_VIVID
select FONT_SUPPORT
select FONT_8x16
select VIDEOBUF2_VMALLOC
+ select VIDEOBUF2_DMA_CONTIG
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT
diff --git a/drivers/media/platform/vivid/vivid-core.c b/drivers/media/platform/vivid/vivid-core.c
index c79d60d..4c4fc3d 100644
--- a/drivers/media/platform/vivid/vivid-core.c
+++ b/drivers/media/platform/vivid/vivid-core.c
@@ -29,6 +29,7 @@
#include <linux/platform_device.h>
#include <linux/videodev2.h>
#include <linux/v4l2-dv-timings.h>
+#include <media/videobuf2-dma-contig.h>
#include <media/videobuf2-vmalloc.h>
#include <media/v4l2-dv-timings.h>
#include <media/v4l2-ioctl.h>
@@ -107,6 +108,11 @@ MODULE_PARM_DESC(multiplanar, " 0 (default) is alternating single and multiplana
"\t\t 1 is single planar devices,\n"
"\t\t 2 is multiplanar devices");
+static unsigned allocators[VIVID_MAX_DEVS];
+module_param_array(allocators, uint, NULL, 0444);
+MODULE_PARM_DESC(allocators, " memory allocator selection, default is 0.\n"
+ "\t\t 0=vmalloc, 1=dma-contig");
+
/* Default: video + vbi-cap (raw and sliced) + radio rx + radio tx + sdr + vbi-out + vid-out */
static unsigned node_types[VIVID_MAX_DEVS] = { [0 ... (VIVID_MAX_DEVS - 1)] = 0x1d3d };
module_param_array(node_types, uint, NULL, 0444);
@@ -640,6 +646,10 @@ static int __init vivid_create_instance(int inst)
{
static const struct v4l2_dv_timings def_dv_timings =
V4L2_DV_BT_CEA_1280X720P60;
+ static const struct vb2_mem_ops * const vivid_mem_ops[2] = {
+ &vb2_vmalloc_memops,
+ &vb2_dma_contig_memops,
+ };
unsigned in_type_counter[4] = { 0, 0, 0, 0 };
unsigned out_type_counter[4] = { 0, 0, 0, 0 };
int ccs_cap = ccs_cap_mode[inst];
@@ -650,6 +660,7 @@ static int __init vivid_create_instance(int inst)
struct video_device *vfd;
struct vb2_queue *q;
unsigned node_type = node_types[inst];
+ unsigned allocator = allocators[inst];
v4l2_std_id tvnorms_cap = 0, tvnorms_out = 0;
int ret;
int i;
@@ -1001,6 +1012,15 @@ static int __init vivid_create_instance(int inst)
dev->fb_cap.fmt.bytesperline = dev->src_rect.width * tpg_g_twopixelsize(&dev->tpg, 0) / 2;
dev->fb_cap.fmt.sizeimage = dev->src_rect.height * dev->fb_cap.fmt.bytesperline;
+ /* initialize allocator context */
+ if (allocator == 1) {
+ dev->alloc_ctx = vb2_dma_contig_init_ctx(dev->v4l2_dev.dev);
+ if (IS_ERR(dev->alloc_ctx))
+ goto unreg_dev;
+ } else if (allocator >= ARRAY_SIZE(vivid_mem_ops)) {
+ allocator = 0;
+ }
+
/* initialize locks */
spin_lock_init(&dev->slock);
mutex_init(&dev->mutex);
@@ -1022,7 +1042,7 @@ static int __init vivid_create_instance(int inst)
q->drv_priv = dev;
q->buf_struct_size = sizeof(struct vivid_buffer);
q->ops = &vivid_vid_cap_qops;
- q->mem_ops = &vb2_vmalloc_memops;
+ q->mem_ops = vivid_mem_ops[allocator];
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
q->min_buffers_needed = 2;
@@ -1040,7 +1060,7 @@ static int __init vivid_create_instance(int inst)
q->drv_priv = dev;
q->buf_struct_size = sizeof(struct vivid_buffer);
q->ops = &vivid_vid_out_qops;
- q->mem_ops = &vb2_vmalloc_memops;
+ q->mem_ops = vivid_mem_ops[allocator];
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
q->min_buffers_needed = 2;
@@ -1058,7 +1078,7 @@ static int __init vivid_create_instance(int inst)
q->drv_priv = dev;
q->buf_struct_size = sizeof(struct vivid_buffer);
q->ops = &vivid_vbi_cap_qops;
- q->mem_ops = &vb2_vmalloc_memops;
+ q->mem_ops = vivid_mem_ops[allocator];
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
q->min_buffers_needed = 2;
@@ -1076,7 +1096,7 @@ static int __init vivid_create_instance(int inst)
q->drv_priv = dev;
q->buf_struct_size = sizeof(struct vivid_buffer);
q->ops = &vivid_vbi_out_qops;
- q->mem_ops = &vb2_vmalloc_memops;
+ q->mem_ops = vivid_mem_ops[allocator];
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
q->min_buffers_needed = 2;
@@ -1093,7 +1113,7 @@ static int __init vivid_create_instance(int inst)
q->drv_priv = dev;
q->buf_struct_size = sizeof(struct vivid_buffer);
q->ops = &vivid_sdr_cap_qops;
- q->mem_ops = &vb2_vmalloc_memops;
+ q->mem_ops = vivid_mem_ops[allocator];
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
q->min_buffers_needed = 8;
diff --git a/drivers/media/platform/vivid/vivid-core.h b/drivers/media/platform/vivid/vivid-core.h
index 811c286..4fefb0d 100644
--- a/drivers/media/platform/vivid/vivid-core.h
+++ b/drivers/media/platform/vivid/vivid-core.h
@@ -142,6 +142,7 @@ struct vivid_dev {
struct v4l2_ctrl_handler ctrl_hdl_radio_tx;
struct video_device sdr_cap_dev;
struct v4l2_ctrl_handler ctrl_hdl_sdr_cap;
+ struct vb2_alloc_ctx *alloc_ctx;
spinlock_t slock;
struct mutex mutex;
diff --git a/drivers/media/platform/vivid/vivid-vid-cap.c b/drivers/media/platform/vivid/vivid-vid-cap.c
index 331c544..04b5fbf 100644
--- a/drivers/media/platform/vivid/vivid-vid-cap.c
+++ b/drivers/media/platform/vivid/vivid-vid-cap.c
@@ -151,8 +151,10 @@ static int vid_cap_queue_setup(struct vb2_queue *vq, const struct v4l2_format *f
/*
* videobuf2-vmalloc allocator is context-less so no need to set
- * alloc_ctxs array.
+ * alloc_ctxs array. videobuf2-dma-contig needs a context, though.
*/
+ for (p = 0; p < planes; p++)
+ alloc_ctxs[p] = dev->alloc_ctx;
if (planes == 2)
dprintk(dev, 1, "%s, count=%d, sizes=%u, %u\n", __func__,
diff --git a/drivers/media/platform/vivid/vivid-vid-out.c b/drivers/media/platform/vivid/vivid-vid-out.c
index 69c2dbd..6b8dfd6 100644
--- a/drivers/media/platform/vivid/vivid-vid-out.c
+++ b/drivers/media/platform/vivid/vivid-vid-out.c
@@ -39,6 +39,7 @@ static int vid_out_queue_setup(struct vb2_queue *vq, const struct v4l2_format *f
unsigned planes = dev->fmt_out->planes;
unsigned h = dev->fmt_out_rect.height;
unsigned size = dev->bytesperline_out[0] * h;
+ unsigned p;
if (dev->field_out == V4L2_FIELD_ALTERNATE) {
/*
@@ -98,8 +99,10 @@ static int vid_out_queue_setup(struct vb2_queue *vq, const struct v4l2_format *f
/*
* videobuf2-vmalloc allocator is context-less so no need to set
- * alloc_ctxs array.
+ * alloc_ctxs array. videobuf2-dma-contig needs a context, though.
*/
+ for (p = 0; p < planes; p++)
+ alloc_ctxs[p] = dev->alloc_ctx;
if (planes == 2)
dprintk(dev, 1, "%s, count=%d, sizes=%u, %u\n", __func__,
--
2.1.1
--
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