linux-kernel - [PATCH v3 2/3] media: atmel-isi: move configure_geometry() to start

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Message-ID: <1440144494-11800-2-git-send-email-josh.wu@atmel.com>
Date:	Fri, 21 Aug 2015 16:08:13 +0800
From:	Josh Wu <josh.wu@...el.com>
To:	Linux Media Mailing List <linux-media@...r.kernel.org>,
	"Guennadi Liakhovetski" <g.liakhovetski@....de>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>
CC:	Josh Wu <josh.wu@...el.com>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH v3 2/3] media: atmel-isi: move configure_geometry() to start_streaming()

As in set_fmt() function we only need to know which format is been set,
we don't need to access the ISI hardware in this moment.

So move the configure_geometry(), which access the ISI hardware, to
start_streaming() will make code more consistent and simpler.

Signed-off-by: Josh Wu <josh.wu@...el.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
---

Changes in v3: None
Changes in v2:
- Add Laurent's reviewed-by tag.

 drivers/media/platform/soc_camera/atmel-isi.c | 17 +++++------------
 1 file changed, 5 insertions(+), 12 deletions(-)

diff --git a/drivers/media/platform/soc_camera/atmel-isi.c b/drivers/media/platform/soc_camera/atmel-isi.c
index b67da70..fe9247a 100644
--- a/drivers/media/platform/soc_camera/atmel-isi.c
+++ b/drivers/media/platform/soc_camera/atmel-isi.c
@@ -390,6 +390,11 @@ static int start_streaming(struct vb2_queue *vq, unsigned int count)
 	/* Disable all interrupts */
 	isi_writel(isi, ISI_INTDIS, (u32)~0UL);
 
+	ret = configure_geometry(isi, icd->user_width, icd->user_height,
+				icd->current_fmt->code);
+	if (ret < 0)
+		return ret;
+
 	spin_lock_irq(&isi->lock);
 	/* Clear any pending interrupt */
 	isi_readl(isi, ISI_STATUS);
@@ -477,8 +482,6 @@ static int isi_camera_init_videobuf(struct vb2_queue *q,
 static int isi_camera_set_fmt(struct soc_camera_device *icd,
 			      struct v4l2_format *f)
 {
-	struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
-	struct atmel_isi *isi = ici->priv;
 	struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
 	const struct soc_camera_format_xlate *xlate;
 	struct v4l2_pix_format *pix = &f->fmt.pix;
@@ -511,16 +514,6 @@ static int isi_camera_set_fmt(struct soc_camera_device *icd,
 	if (mf->code != xlate->code)
 		return -EINVAL;
 
-	/* Enable PM and peripheral clock before operate isi registers */
-	pm_runtime_get_sync(ici->v4l2_dev.dev);
-
-	ret = configure_geometry(isi, pix->width, pix->height, xlate->code);
-
-	pm_runtime_put(ici->v4l2_dev.dev);
-
-	if (ret < 0)
-		return ret;
-
 	pix->width		= mf->width;
 	pix->height		= mf->height;
 	pix->field		= mf->field;
-- 
1.9.1

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