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From:   Benjamin Gaignard <benjamin.gaignard@collabora.com>
To:     mchehab@kernel.org, tfiga@chromium.org, m.szyprowski@samsung.com,
        ming.qian@nxp.com, ezequiel@vanguardiasur.com.ar,
        p.zabel@pengutronix.de, gregkh@linuxfoundation.org,
        hverkuil-cisco@xs4all.nl, nicolas.dufresne@collabora.com
Cc:     linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org,
        linux-rockchip@lists.infradead.org, linux-staging@lists.linux.dev,
        kernel@collabora.com,
        Benjamin Gaignard <benjamin.gaignard@collabora.com>,
        Daniel Almeida <daniel.almeida@collabora.com>
Subject: [PATCH v12 30/56] media: test-drivers: Stop direct calls to queue num_buffers field
Date:   Tue, 17 Oct 2023 16:47:30 +0200
Message-Id: <20231017144756.34719-31-benjamin.gaignard@collabora.com>
In-Reply-To: <20231017144756.34719-1-benjamin.gaignard@collabora.com>
References: <20231017144756.34719-1-benjamin.gaignard@collabora.com>
MIME-Version: 1.0
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Precedence: bulk

Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
futur.
If 'min_buffers_needed' is set remove useless checks in queue setup
functions.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Daniel Almeida <daniel.almeida@collabora.com>
---
 drivers/media/test-drivers/visl/visl-dec.c         | 4 ++--
 drivers/media/test-drivers/vivid/vivid-meta-cap.c  | 3 ---
 drivers/media/test-drivers/vivid/vivid-meta-out.c  | 5 +++--
 drivers/media/test-drivers/vivid/vivid-touch-cap.c | 5 +++--
 drivers/media/test-drivers/vivid/vivid-vbi-cap.c   | 5 +++--
 drivers/media/test-drivers/vivid/vivid-vbi-out.c   | 5 +++--
 drivers/media/test-drivers/vivid/vivid-vid-cap.c   | 5 +++--
 drivers/media/test-drivers/vivid/vivid-vid-out.c   | 5 +----
 8 files changed, 18 insertions(+), 19 deletions(-)

diff --git a/drivers/media/test-drivers/visl/visl-dec.c b/drivers/media/test-drivers/visl/visl-dec.c
index ba20ea998d19..4672dc5e52bb 100644
--- a/drivers/media/test-drivers/visl/visl-dec.c
+++ b/drivers/media/test-drivers/visl/visl-dec.c
@@ -287,7 +287,7 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
 	frame_dprintk(ctx->dev, run->dst->sequence, "%s\n", buf);
 
 	len = 0;
-	for (i = 0; i < out_q->num_buffers; i++) {
+	for (i = 0; i < vb2_get_num_buffers(out_q); i++) {
 		char entry[] = "index: %u, state: %s, request_fd: %d, ";
 		u32 old_len = len;
 		struct vb2_buffer *vb2;
@@ -347,7 +347,7 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
 	frame_dprintk(ctx->dev, run->dst->sequence, "%s\n", buf);
 
 	len = 0;
-	for (i = 0; i < cap_q->num_buffers; i++) {
+	for (i = 0; i < vb2_get_num_buffers(cap_q); i++) {
 		u32 old_len = len;
 		struct vb2_buffer *vb2;
 		char *q_status;
diff --git a/drivers/media/test-drivers/vivid/vivid-meta-cap.c b/drivers/media/test-drivers/vivid/vivid-meta-cap.c
index 780f96860a6d..0a718d037e59 100644
--- a/drivers/media/test-drivers/vivid/vivid-meta-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-meta-cap.c
@@ -30,9 +30,6 @@ static int meta_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
 		sizes[0] = size;
 	}
 
-	if (vq->num_buffers + *nbuffers < 2)
-		*nbuffers = 2 - vq->num_buffers;
-
 	*nplanes = 1;
 	return 0;
 }
diff --git a/drivers/media/test-drivers/vivid/vivid-meta-out.c b/drivers/media/test-drivers/vivid/vivid-meta-out.c
index 95835b52b58f..4a569a6e58be 100644
--- a/drivers/media/test-drivers/vivid/vivid-meta-out.c
+++ b/drivers/media/test-drivers/vivid/vivid-meta-out.c
@@ -18,6 +18,7 @@ static int meta_out_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
 				struct device *alloc_devs[])
 {
 	struct vivid_dev *dev = vb2_get_drv_priv(vq);
+	unsigned int q_num_bufs = vb2_get_num_buffers(vq);
 	unsigned int size =  sizeof(struct vivid_meta_out_buf);
 
 	if (!vivid_is_webcam(dev))
@@ -30,8 +31,8 @@ static int meta_out_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
 		sizes[0] = size;
 	}
 
-	if (vq->num_buffers + *nbuffers < 2)
-		*nbuffers = 2 - vq->num_buffers;
+	if (q_num_bufs + *nbuffers < 2)
+		*nbuffers = 2 - q_num_bufs;
 
 	*nplanes = 1;
 	return 0;
diff --git a/drivers/media/test-drivers/vivid/vivid-touch-cap.c b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
index c7f6e23df51e..4b3c6ea0afde 100644
--- a/drivers/media/test-drivers/vivid/vivid-touch-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
@@ -13,6 +13,7 @@ static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
 				 struct device *alloc_devs[])
 {
 	struct vivid_dev *dev = vb2_get_drv_priv(vq);
+	unsigned int q_num_bufs = vb2_get_num_buffers(vq);
 	struct v4l2_pix_format *f = &dev->tch_format;
 	unsigned int size = f->sizeimage;
 
@@ -23,8 +24,8 @@ static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
 		sizes[0] = size;
 	}
 
-	if (vq->num_buffers + *nbuffers < 2)
-		*nbuffers = 2 - vq->num_buffers;
+	if (q_num_bufs + *nbuffers < 2)
+		*nbuffers = 2 - q_num_bufs;
 
 	*nplanes = 1;
 	return 0;
diff --git a/drivers/media/test-drivers/vivid/vivid-vbi-cap.c b/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
index b65b02eeeb97..fcd7f40385e9 100644
--- a/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
@@ -124,6 +124,7 @@ static int vbi_cap_queue_setup(struct vb2_queue *vq,
 		       unsigned sizes[], struct device *alloc_devs[])
 {
 	struct vivid_dev *dev = vb2_get_drv_priv(vq);
+	unsigned int q_num_bufs = vb2_get_num_buffers(vq);
 	bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
 	unsigned size = vq->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
 		36 * sizeof(struct v4l2_sliced_vbi_data) :
@@ -134,8 +135,8 @@ static int vbi_cap_queue_setup(struct vb2_queue *vq,
 
 	sizes[0] = size;
 
-	if (vq->num_buffers + *nbuffers < 2)
-		*nbuffers = 2 - vq->num_buffers;
+	if (q_num_bufs + *nbuffers < 2)
+		*nbuffers = 2 - q_num_bufs;
 
 	*nplanes = 1;
 	return 0;
diff --git a/drivers/media/test-drivers/vivid/vivid-vbi-out.c b/drivers/media/test-drivers/vivid/vivid-vbi-out.c
index cd56476902a2..8f0da5d88bcc 100644
--- a/drivers/media/test-drivers/vivid/vivid-vbi-out.c
+++ b/drivers/media/test-drivers/vivid/vivid-vbi-out.c
@@ -20,6 +20,7 @@ static int vbi_out_queue_setup(struct vb2_queue *vq,
 		       unsigned sizes[], struct device *alloc_devs[])
 {
 	struct vivid_dev *dev = vb2_get_drv_priv(vq);
+	unsigned int q_num_bufs = vb2_get_num_buffers(vq);
 	bool is_60hz = dev->std_out & V4L2_STD_525_60;
 	unsigned size = vq->type == V4L2_BUF_TYPE_SLICED_VBI_OUTPUT ?
 		36 * sizeof(struct v4l2_sliced_vbi_data) :
@@ -30,8 +31,8 @@ static int vbi_out_queue_setup(struct vb2_queue *vq,
 
 	sizes[0] = size;
 
-	if (vq->num_buffers + *nbuffers < 2)
-		*nbuffers = 2 - vq->num_buffers;
+	if (q_num_bufs + *nbuffers < 2)
+		*nbuffers = 2 - q_num_bufs;
 
 	*nplanes = 1;
 	return 0;
diff --git a/drivers/media/test-drivers/vivid/vivid-vid-cap.c b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
index 3a06df35a2d7..0cc7602b9fb2 100644
--- a/drivers/media/test-drivers/vivid/vivid-vid-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
@@ -77,6 +77,7 @@ static int vid_cap_queue_setup(struct vb2_queue *vq,
 		       unsigned sizes[], struct device *alloc_devs[])
 {
 	struct vivid_dev *dev = vb2_get_drv_priv(vq);
+	unsigned int q_num_bufs = vb2_get_num_buffers(vq);
 	unsigned buffers = tpg_g_buffers(&dev->tpg);
 	unsigned h = dev->fmt_cap_rect.height;
 	unsigned p;
@@ -117,8 +118,8 @@ static int vid_cap_queue_setup(struct vb2_queue *vq,
 					dev->fmt_cap->data_offset[p];
 	}
 
-	if (vq->num_buffers + *nbuffers < 2)
-		*nbuffers = 2 - vq->num_buffers;
+	if (q_num_bufs + *nbuffers < 2)
+		*nbuffers = 2 - q_num_bufs;
 
 	*nplanes = buffers;
 
diff --git a/drivers/media/test-drivers/vivid/vivid-vid-out.c b/drivers/media/test-drivers/vivid/vivid-vid-out.c
index 184a6df2c29f..24c6dc896255 100644
--- a/drivers/media/test-drivers/vivid/vivid-vid-out.c
+++ b/drivers/media/test-drivers/vivid/vivid-vid-out.c
@@ -73,12 +73,9 @@ static int vid_out_queue_setup(struct vb2_queue *vq,
 				       vfmt->data_offset[p] : size;
 	}
 
-	if (vq->num_buffers + *nbuffers < 2)
-		*nbuffers = 2 - vq->num_buffers;
-
 	*nplanes = planes;
 
-	dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
+	dprintk(dev, 1, "%s: count=%u\n", __func__, vb2_get_num_buffers(vq));
 	for (p = 0; p < planes; p++)
 		dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
 	return 0;
-- 
2.39.2