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Date: Tue, 20 Feb 2018 13:44:23 +0900
From: Alexandre Courbot <acourbot@...omium.org>
To: Mauro Carvalho Chehab <mchehab@...nel.org>,
Hans Verkuil <hverkuil@...all.nl>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Pawel Osciak <posciak@...omium.org>,
Marek Szyprowski <m.szyprowski@...sung.com>,
Tomasz Figa <tfiga@...omium.org>,
Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc: Gustavo Padovan <gustavo.padovan@...labora.com>,
linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
Alexandre Courbot <acourbot@...omium.org>
Subject: [RFCv4 19/21] media: vim2m: add request support
Set the necessary ops for supporting requests in vim2m.
Signed-off-by: Alexandre Courbot <acourbot@...omium.org>
---
drivers/media/platform/Kconfig | 1 +
drivers/media/platform/vim2m.c | 75 ++++++++++++++++++++++++++++++++++
2 files changed, 76 insertions(+)
diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index 614fbef08ddc..09be0b5f9afe 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -534,6 +534,7 @@ source "drivers/media/platform/vivid/Kconfig"
config VIDEO_VIM2M
tristate "Virtual Memory-to-Memory Driver"
depends on VIDEO_DEV && VIDEO_V4L2
+ select MEDIA_REQUEST_API
select VIDEOBUF2_VMALLOC
select V4L2_MEM2MEM_DEV
default n
diff --git a/drivers/media/platform/vim2m.c b/drivers/media/platform/vim2m.c
index 065483e62db4..02793dd9a330 100644
--- a/drivers/media/platform/vim2m.c
+++ b/drivers/media/platform/vim2m.c
@@ -30,6 +30,8 @@
#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
#include <media/videobuf2-vmalloc.h>
+#include <media/v4l2-request.h>
+#include <media/videobuf2-v4l2.h>
MODULE_DESCRIPTION("Virtual device for mem2mem framework testing");
MODULE_AUTHOR("Pawel Osciak, <pawel@...iak.com>");
@@ -148,6 +150,8 @@ struct vim2m_dev {
struct timer_list timer;
struct v4l2_m2m_dev *m2m_dev;
+
+ struct v4l2_request_mgr req_mgr;
};
struct vim2m_ctx {
@@ -155,6 +159,7 @@ struct vim2m_ctx {
struct vim2m_dev *dev;
struct v4l2_ctrl_handler hdl;
+ struct v4l2_request_entity req_entity;
/* Processed buffers in this transaction */
u8 num_processed;
@@ -367,6 +372,24 @@ static void job_abort(void *priv)
ctx->aborting = 1;
}
+static int apply_request_params(struct media_request *req,
+ struct vim2m_ctx *ctx)
+{
+ struct v4l2_request_entity_data *data;
+
+ if (!req)
+ return -EINVAL;
+
+ data = to_v4l2_entity_data(media_request_get_entity_data(req,
+ &ctx->req_entity.base));
+ if (WARN_ON(IS_ERR(data)))
+ return PTR_ERR(data);
+
+ v4l2_ctrl_request_setup(&data->ctrls);
+
+ return 0;
+}
+
/* device_run() - prepares and starts the device
*
* This simulates all the immediate preparations required before starting
@@ -382,6 +405,19 @@ static void device_run(void *priv)
src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+ WARN_ON(dst_buf->vb2_buf.request != NULL &&
+ dst_buf->vb2_buf.request != src_buf->vb2_buf.request);
+
+ /* Apply request if needed */
+ if (src_buf->vb2_buf.request) {
+ int ret = apply_request_params(src_buf->vb2_buf.request, ctx);
+ if (ret) {
+ dprintk(dev, "error applying request parameters: %d\n",
+ ret);
+ return;
+ }
+ }
+
device_process(ctx, src_buf, dst_buf);
/* Run a timer, which simulates a hardware irq */
@@ -393,6 +429,7 @@ static void device_isr(struct timer_list *t)
struct vim2m_dev *vim2m_dev = from_timer(vim2m_dev, t, timer);
struct vim2m_ctx *curr_ctx;
struct vb2_v4l2_buffer *src_vb, *dst_vb;
+ struct media_request *req;
unsigned long flags;
curr_ctx = v4l2_m2m_get_curr_priv(vim2m_dev->m2m_dev);
@@ -404,6 +441,7 @@ static void device_isr(struct timer_list *t)
src_vb = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx);
dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx);
+ req = src_vb->vb2_buf.request;
curr_ctx->num_processed++;
@@ -411,6 +449,8 @@ static void device_isr(struct timer_list *t)
v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_DONE);
v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_DONE);
spin_unlock_irqrestore(&vim2m_dev->irqlock, flags);
+ if (req)
+ media_request_entity_complete(req, &curr_ctx->req_entity.base);
if (curr_ctx->num_processed == curr_ctx->translen
|| curr_ctx->aborting) {
@@ -838,6 +878,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *ds
src_vq->mem_ops = &vb2_vmalloc_memops;
src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
src_vq->lock = &ctx->dev->dev_mutex;
+ src_vq->allow_requests = true;
ret = vb2_queue_init(src_vq);
if (ret)
@@ -851,6 +892,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *ds
dst_vq->mem_ops = &vb2_vmalloc_memops;
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = &ctx->dev->dev_mutex;
+ dst_vq->allow_requests = true;
return vb2_queue_init(dst_vq);
}
@@ -877,6 +919,31 @@ static const struct v4l2_ctrl_config vim2m_ctrl_trans_num_bufs = {
.step = 1,
};
+struct media_request_entity_data *
+vim2m_entity_data_alloc(struct media_request *req,
+ struct media_request_entity *entity)
+{
+ struct vim2m_ctx *ctx;
+
+ ctx = container_of(entity, struct vim2m_ctx, req_entity.base);
+ return v4l2_request_entity_data_alloc(req, &ctx->hdl);
+}
+
+static int vim2m_request_submit(struct media_request *req,
+ struct media_request_entity_data *_data)
+{
+ struct v4l2_request_entity_data *data;
+
+ data = to_v4l2_entity_data(_data);
+ return vb2_request_submit(data);
+}
+
+static const struct media_request_entity_ops vim2m_request_entity_ops = {
+ .data_alloc = vim2m_entity_data_alloc,
+ .data_free = v4l2_request_entity_data_free,
+ .submit = vim2m_request_submit,
+};
+
/*
* File operations
*/
@@ -900,6 +967,9 @@ static int vim2m_open(struct file *file)
ctx->dev = dev;
hdl = &ctx->hdl;
v4l2_ctrl_handler_init(hdl, 4);
+ v4l2_request_entity_init(&ctx->req_entity, &vim2m_request_entity_ops,
+ &ctx->dev->vfd);
+ ctx->fh.entity = &ctx->req_entity.base;
v4l2_ctrl_new_std(hdl, &vim2m_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
v4l2_ctrl_new_std(hdl, &vim2m_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
v4l2_ctrl_new_custom(hdl, &vim2m_ctrl_trans_time_msec, NULL);
@@ -999,6 +1069,9 @@ static int vim2m_probe(struct platform_device *pdev)
if (!dev)
return -ENOMEM;
+ v4l2_request_mgr_init(&dev->req_mgr, &dev->vfd,
+ &v4l2_request_ops);
+
spin_lock_init(&dev->irqlock);
ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
@@ -1012,6 +1085,7 @@ static int vim2m_probe(struct platform_device *pdev)
vfd = &dev->vfd;
vfd->lock = &dev->dev_mutex;
vfd->v4l2_dev = &dev->v4l2_dev;
+ vfd->req_mgr = &dev->req_mgr.base;
ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
if (ret) {
@@ -1054,6 +1128,7 @@ static int vim2m_remove(struct platform_device *pdev)
del_timer_sync(&dev->timer);
video_unregister_device(&dev->vfd);
v4l2_device_unregister(&dev->v4l2_dev);
+ v4l2_request_mgr_free(&dev->req_mgr);
return 0;
}
--
2.16.1.291.g4437f3f132-goog
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