From: "Niklas Söderlund" <niklas.soderlund+renesas@ragnatech.se>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
linux-media@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org,
"Niklas Söderlund" <niklas.soderlund+renesas@ragnatech.se>
Subject: [PATCH 1/2] rcar-vin: Move hardware buffer tracking to own struct
Date: Thu, 5 Sep 2019 23:49:14 +0200 [thread overview]
Message-ID: <20190905214915.13919-2-niklas.soderlund+renesas@ragnatech.se> (raw)
In-Reply-To: <20190905214915.13919-1-niklas.soderlund+renesas@ragnatech.se>
To support SEQ_TB/BT not all buffers given to the hardware will be
equal, the driver needs to keep track of different buffer types. Move
the tracking of buffers given to hardware into a struct so additional
tracking fields can be associated with each buffer.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
---
drivers/media/platform/rcar-vin/rcar-dma.c | 27 +++++++++++-----------
drivers/media/platform/rcar-vin/rcar-vin.h | 9 ++++----
2 files changed, 19 insertions(+), 17 deletions(-)
diff --git a/drivers/media/platform/rcar-vin/rcar-dma.c b/drivers/media/platform/rcar-vin/rcar-dma.c
index af4f774149f08597..a9fffadc268e96ba 100644
--- a/drivers/media/platform/rcar-vin/rcar-dma.c
+++ b/drivers/media/platform/rcar-vin/rcar-dma.c
@@ -841,20 +841,20 @@ static void rvin_fill_hw_slot(struct rvin_dev *vin, int slot)
dma_addr_t phys_addr;
/* A already populated slot shall never be overwritten. */
- if (WARN_ON(vin->queue_buf[slot] != NULL))
+ if (WARN_ON(vin->buf_hw[slot].buffer != NULL))
return;
vin_dbg(vin, "Filling HW slot: %d\n", slot);
if (list_empty(&vin->buf_list)) {
- vin->queue_buf[slot] = NULL;
+ vin->buf_hw[slot].buffer = NULL;
phys_addr = vin->scratch_phys;
} else {
/* Keep track of buffer we give to HW */
buf = list_entry(vin->buf_list.next, struct rvin_buffer, list);
vbuf = &buf->vb;
list_del_init(to_buf_list(vbuf));
- vin->queue_buf[slot] = vbuf;
+ vin->buf_hw[slot].buffer = vbuf;
/* Setup DMA */
phys_addr = vb2_dma_contig_plane_dma_addr(&vbuf->vb2_buf, 0);
@@ -950,13 +950,14 @@ static irqreturn_t rvin_irq(int irq, void *data)
}
/* Capture frame */
- if (vin->queue_buf[slot]) {
- vin->queue_buf[slot]->field = rvin_get_active_field(vin, vnms);
- vin->queue_buf[slot]->sequence = vin->sequence;
- vin->queue_buf[slot]->vb2_buf.timestamp = ktime_get_ns();
- vb2_buffer_done(&vin->queue_buf[slot]->vb2_buf,
+ if (vin->buf_hw[slot].buffer) {
+ vin->buf_hw[slot].buffer->field =
+ rvin_get_active_field(vin, vnms);
+ vin->buf_hw[slot].buffer->sequence = vin->sequence;
+ vin->buf_hw[slot].buffer->vb2_buf.timestamp = ktime_get_ns();
+ vb2_buffer_done(&vin->buf_hw[slot].buffer->vb2_buf,
VB2_BUF_STATE_DONE);
- vin->queue_buf[slot] = NULL;
+ vin->buf_hw[slot].buffer = NULL;
} else {
/* Scratch buffer was used, dropping frame. */
vin_dbg(vin, "Dropping frame %u\n", vin->sequence);
@@ -980,10 +981,10 @@ static void return_all_buffers(struct rvin_dev *vin,
int i;
for (i = 0; i < HW_BUFFER_NUM; i++) {
- if (vin->queue_buf[i]) {
- vb2_buffer_done(&vin->queue_buf[i]->vb2_buf,
+ if (vin->buf_hw[i].buffer) {
+ vb2_buffer_done(&vin->buf_hw[i].buffer->vb2_buf,
state);
- vin->queue_buf[i] = NULL;
+ vin->buf_hw[i].buffer = NULL;
}
}
@@ -1288,7 +1289,7 @@ int rvin_dma_register(struct rvin_dev *vin, int irq)
vin->state = STOPPED;
for (i = 0; i < HW_BUFFER_NUM; i++)
- vin->queue_buf[i] = NULL;
+ vin->buf_hw[i].buffer = NULL;
/* buffer queue */
q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
diff --git a/drivers/media/platform/rcar-vin/rcar-vin.h b/drivers/media/platform/rcar-vin/rcar-vin.h
index 86e9bad44484092c..9031fe7f569b908e 100644
--- a/drivers/media/platform/rcar-vin/rcar-vin.h
+++ b/drivers/media/platform/rcar-vin/rcar-vin.h
@@ -162,9 +162,8 @@ struct rvin_info {
* @scratch: cpu address for scratch buffer
* @scratch_phys: physical address of the scratch buffer
*
- * @qlock: protects @queue_buf, @buf_list, @sequence
- * @state
- * @queue_buf: Keeps track of buffers given to HW slot
+ * @qlock: protects @buf_hw, @buf_list, @sequence and @state
+ * @buf_hw: Keeps track of buffers given to HW slot
* @buf_list: list of queued buffers
* @sequence: V4L2 buffers sequence number
* @state: keeps track of operation state
@@ -203,7 +202,9 @@ struct rvin_dev {
dma_addr_t scratch_phys;
spinlock_t qlock;
- struct vb2_v4l2_buffer *queue_buf[HW_BUFFER_NUM];
+ struct {
+ struct vb2_v4l2_buffer *buffer;
+ } buf_hw[HW_BUFFER_NUM];
struct list_head buf_list;
unsigned int sequence;
enum rvin_dma_state state;
--
2.23.0
next prev parent reply other threads:[~2019-09-05 21:51 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-05 21:49 [PATCH 0/2] rcar-vin: Support V4L2_FIELD_SEQ_{TB,BT} Niklas Söderlund
2019-09-05 21:49 ` Niklas Söderlund [this message]
2019-09-05 21:49 ` [PATCH 2/2] rcar-vin: Add support for V4L2_FIELD_SEQ_{TB,BT} Niklas Söderlund
2019-09-06 10:23 ` Sergei Shtylyov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190905214915.13919-2-niklas.soderlund+renesas@ragnatech.se \
--to=niklas.soderlund+renesas@ragnatech.se \
--cc=laurent.pinchart@ideasonboard.com \
--cc=linux-media@vger.kernel.org \
--cc=linux-renesas-soc@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).