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Subject[PATCH 2/6] media: staging/imx: Pass device to alloc/free_dma_buf
Date
Allocate and free a DMA coherent buffer in imx_media_alloc/free_dma_buf()
from the given device. This allows DMA alloc and free using a device
that is backed by real hardware, which for the imx5/6/7 CSI is the CSI
unit, and for the internal IPU sub-devices, is the parent IPU.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
---
drivers/staging/media/imx/imx-ic-prpencvf.c | 18 +++++++++---------
drivers/staging/media/imx/imx-media-csi.c | 6 +++---
drivers/staging/media/imx/imx-media-utils.c | 13 ++++++-------
drivers/staging/media/imx/imx-media.h | 4 ++--
drivers/staging/media/imx/imx7-media-csi.c | 4 ++--
5 files changed, 22 insertions(+), 23 deletions(-)

diff --git a/drivers/staging/media/imx/imx-ic-prpencvf.c b/drivers/staging/media/imx/imx-ic-prpencvf.c
index 069cce512280..ddcd87a17c71 100644
--- a/drivers/staging/media/imx/imx-ic-prpencvf.c
+++ b/drivers/staging/media/imx/imx-ic-prpencvf.c
@@ -464,13 +464,13 @@ static int prp_setup_rotation(struct prp_priv *priv)
incc = priv->cc[PRPENCVF_SINK_PAD];
outcc = vdev->cc;

- ret = imx_media_alloc_dma_buf(ic_priv->md, &priv->rot_buf[0],
+ ret = imx_media_alloc_dma_buf(ic_priv->ipu_dev, &priv->rot_buf[0],
outfmt->sizeimage);
if (ret) {
v4l2_err(&ic_priv->sd, "failed to alloc rot_buf[0], %d\n", ret);
return ret;
}
- ret = imx_media_alloc_dma_buf(ic_priv->md, &priv->rot_buf[1],
+ ret = imx_media_alloc_dma_buf(ic_priv->ipu_dev, &priv->rot_buf[1],
outfmt->sizeimage);
if (ret) {
v4l2_err(&ic_priv->sd, "failed to alloc rot_buf[1], %d\n", ret);
@@ -543,9 +543,9 @@ static int prp_setup_rotation(struct prp_priv *priv)
unsetup_vb2:
prp_unsetup_vb2_buf(priv, VB2_BUF_STATE_QUEUED);
free_rot1:
- imx_media_free_dma_buf(ic_priv->md, &priv->rot_buf[1]);
+ imx_media_free_dma_buf(ic_priv->ipu_dev, &priv->rot_buf[1]);
free_rot0:
- imx_media_free_dma_buf(ic_priv->md, &priv->rot_buf[0]);
+ imx_media_free_dma_buf(ic_priv->ipu_dev, &priv->rot_buf[0]);
return ret;
}

@@ -563,8 +563,8 @@ static void prp_unsetup_rotation(struct prp_priv *priv)

ipu_ic_disable(priv->ic);

- imx_media_free_dma_buf(ic_priv->md, &priv->rot_buf[0]);
- imx_media_free_dma_buf(ic_priv->md, &priv->rot_buf[1]);
+ imx_media_free_dma_buf(ic_priv->ipu_dev, &priv->rot_buf[0]);
+ imx_media_free_dma_buf(ic_priv->ipu_dev, &priv->rot_buf[1]);
}

static int prp_setup_norotation(struct prp_priv *priv)
@@ -656,7 +656,7 @@ static int prp_start(struct prp_priv *priv)

outfmt = &vdev->fmt.fmt.pix;

- ret = imx_media_alloc_dma_buf(ic_priv->md, &priv->underrun_buf,
+ ret = imx_media_alloc_dma_buf(ic_priv->ipu_dev, &priv->underrun_buf,
outfmt->sizeimage);
if (ret)
goto out_put_ipu;
@@ -726,7 +726,7 @@ static int prp_start(struct prp_priv *priv)
out_unsetup:
prp_unsetup(priv, VB2_BUF_STATE_QUEUED);
out_free_underrun:
- imx_media_free_dma_buf(ic_priv->md, &priv->underrun_buf);
+ imx_media_free_dma_buf(ic_priv->ipu_dev, &priv->underrun_buf);
out_put_ipu:
prp_put_ipu_resources(priv);
return ret;
@@ -763,7 +763,7 @@ static void prp_stop(struct prp_priv *priv)

prp_unsetup(priv, VB2_BUF_STATE_ERROR);

- imx_media_free_dma_buf(ic_priv->md, &priv->underrun_buf);
+ imx_media_free_dma_buf(ic_priv->ipu_dev, &priv->underrun_buf);

/* cancel the EOF timeout timer */
del_timer_sync(&priv->eof_timeout_timer);
diff --git a/drivers/staging/media/imx/imx-media-csi.c b/drivers/staging/media/imx/imx-media-csi.c
index 93b107eab5f5..ea3d13103c91 100644
--- a/drivers/staging/media/imx/imx-media-csi.c
+++ b/drivers/staging/media/imx/imx-media-csi.c
@@ -612,7 +612,7 @@ static int csi_idmac_start(struct csi_priv *priv)

outfmt = &vdev->fmt.fmt.pix;

- ret = imx_media_alloc_dma_buf(priv->md, &priv->underrun_buf,
+ ret = imx_media_alloc_dma_buf(priv->dev, &priv->underrun_buf,
outfmt->sizeimage);
if (ret)
goto out_put_ipu;
@@ -666,7 +666,7 @@ static int csi_idmac_start(struct csi_priv *priv)
out_unsetup:
csi_idmac_unsetup(priv, VB2_BUF_STATE_QUEUED);
out_free_dma_buf:
- imx_media_free_dma_buf(priv->md, &priv->underrun_buf);
+ imx_media_free_dma_buf(priv->dev, &priv->underrun_buf);
out_put_ipu:
csi_idmac_put_ipu_resources(priv);
return ret;
@@ -698,7 +698,7 @@ static void csi_idmac_stop(struct csi_priv *priv)

csi_idmac_unsetup(priv, VB2_BUF_STATE_ERROR);

- imx_media_free_dma_buf(priv->md, &priv->underrun_buf);
+ imx_media_free_dma_buf(priv->dev, &priv->underrun_buf);

/* cancel the EOF timeout timer */
del_timer_sync(&priv->eof_timeout_timer);
diff --git a/drivers/staging/media/imx/imx-media-utils.c b/drivers/staging/media/imx/imx-media-utils.c
index 1c63a2765a81..c52aa59acd05 100644
--- a/drivers/staging/media/imx/imx-media-utils.c
+++ b/drivers/staging/media/imx/imx-media-utils.c
@@ -679,29 +679,28 @@ int imx_media_ipu_image_to_mbus_fmt(struct v4l2_mbus_framefmt *mbus,
}
EXPORT_SYMBOL_GPL(imx_media_ipu_image_to_mbus_fmt);

-void imx_media_free_dma_buf(struct imx_media_dev *imxmd,
+void imx_media_free_dma_buf(struct device *dev,
struct imx_media_dma_buf *buf)
{
if (buf->virt)
- dma_free_coherent(imxmd->md.dev, buf->len,
- buf->virt, buf->phys);
+ dma_free_coherent(dev, buf->len, buf->virt, buf->phys);

buf->virt = NULL;
buf->phys = 0;
}
EXPORT_SYMBOL_GPL(imx_media_free_dma_buf);

-int imx_media_alloc_dma_buf(struct imx_media_dev *imxmd,
+int imx_media_alloc_dma_buf(struct device *dev,
struct imx_media_dma_buf *buf,
int size)
{
- imx_media_free_dma_buf(imxmd, buf);
+ imx_media_free_dma_buf(dev, buf);

buf->len = PAGE_ALIGN(size);
- buf->virt = dma_alloc_coherent(imxmd->md.dev, buf->len, &buf->phys,
+ buf->virt = dma_alloc_coherent(dev, buf->len, &buf->phys,
GFP_DMA | GFP_KERNEL);
if (!buf->virt) {
- dev_err(imxmd->md.dev, "failed to alloc dma buffer\n");
+ dev_err(dev, "%s: failed\n", __func__);
return -ENOMEM;
}

diff --git a/drivers/staging/media/imx/imx-media.h b/drivers/staging/media/imx/imx-media.h
index fadde3435cb7..ba2d75bcc4c9 100644
--- a/drivers/staging/media/imx/imx-media.h
+++ b/drivers/staging/media/imx/imx-media.h
@@ -208,9 +208,9 @@ struct imx_media_dma_buf {
unsigned long len;
};

-void imx_media_free_dma_buf(struct imx_media_dev *imxmd,
+void imx_media_free_dma_buf(struct device *dev,
struct imx_media_dma_buf *buf);
-int imx_media_alloc_dma_buf(struct imx_media_dev *imxmd,
+int imx_media_alloc_dma_buf(struct device *dev,
struct imx_media_dma_buf *buf,
int size);

diff --git a/drivers/staging/media/imx/imx7-media-csi.c b/drivers/staging/media/imx/imx7-media-csi.c
index 95f3808762b4..96d01d8af874 100644
--- a/drivers/staging/media/imx/imx7-media-csi.c
+++ b/drivers/staging/media/imx/imx7-media-csi.c
@@ -714,7 +714,7 @@ static int imx7_csi_dma_start(struct imx7_csi *csi)
struct v4l2_pix_format *out_pix = &vdev->fmt.fmt.pix;
int ret;

- ret = imx_media_alloc_dma_buf(csi->imxmd, &csi->underrun_buf,
+ ret = imx_media_alloc_dma_buf(csi->dev, &csi->underrun_buf,
out_pix->sizeimage);
if (ret < 0) {
v4l2_warn(&csi->sd, "consider increasing the CMA area\n");
@@ -754,7 +754,7 @@ static void imx7_csi_dma_stop(struct imx7_csi *csi)

imx7_csi_dma_unsetup_vb2_buf(csi, VB2_BUF_STATE_ERROR);

- imx_media_free_dma_buf(csi->imxmd, &csi->underrun_buf);
+ imx_media_free_dma_buf(csi->dev, &csi->underrun_buf);
}

static int imx7_csi_configure(struct imx7_csi *csi)
--
2.17.1
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