diff options
author | Steve Longerbeam <slongerbeam@gmail.com> | 2019-02-20 18:53:32 -0500 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-03-19 13:42:52 -0400 |
commit | dee747f88167124884a918855c1f438e2f7f39e2 (patch) | |
tree | f57997c6b36119ebbdb8bc5a4c9d44626a1f9fb1 /drivers | |
parent | 085b26da62211cb77622008082adff56aefa771d (diff) | |
download | linux-dee747f88167124884a918855c1f438e2f7f39e2.tar.bz2 |
media: imx: Don't register IPU subdevs/links if CSI port missing
The second IPU internal sub-devices were being registered and links
to them created even when the second IPU is not present. This is wrong
for i.MX6 S/DL and i.MX53 which have only a single IPU.
Fixes: e130291212df5 ("[media] media: Add i.MX media core driver")
Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/staging/media/imx/imx-media-dev.c | 7 | ||||
-rw-r--r-- | drivers/staging/media/imx/imx-media-internal-sd.c | 22 | ||||
-rw-r--r-- | drivers/staging/media/imx/imx-media-of.c | 58 | ||||
-rw-r--r-- | drivers/staging/media/imx/imx-media.h | 3 | ||||
-rw-r--r-- | drivers/staging/media/imx/imx7-media-csi.c | 2 |
5 files changed, 46 insertions, 46 deletions
diff --git a/drivers/staging/media/imx/imx-media-dev.c b/drivers/staging/media/imx/imx-media-dev.c index fc35508d9396..10a63a4fa90b 100644 --- a/drivers/staging/media/imx/imx-media-dev.c +++ b/drivers/staging/media/imx/imx-media-dev.c @@ -477,13 +477,6 @@ static int imx_media_probe(struct platform_device *pdev) goto cleanup; } - ret = imx_media_add_ipu_internal_subdevs(imxmd); - if (ret) { - v4l2_err(&imxmd->v4l2_dev, - "add_ipu_internal_subdevs failed with %d\n", ret); - goto cleanup; - } - ret = imx_media_dev_notifier_register(imxmd); if (ret) goto del_int; diff --git a/drivers/staging/media/imx/imx-media-internal-sd.c b/drivers/staging/media/imx/imx-media-internal-sd.c index e620f4adb755..dc510dcfe160 100644 --- a/drivers/staging/media/imx/imx-media-internal-sd.c +++ b/drivers/staging/media/imx/imx-media-internal-sd.c @@ -298,13 +298,14 @@ static int add_internal_subdev(struct imx_media_dev *imxmd, } /* adds the internal subdevs in one ipu */ -static int add_ipu_internal_subdevs(struct imx_media_dev *imxmd, int ipu_id) +int imx_media_add_ipu_internal_subdevs(struct imx_media_dev *imxmd, + int ipu_id) { enum isd_enum i; + int ret; for (i = 0; i < num_isd; i++) { const struct internal_subdev *isd = &int_subdev[i]; - int ret; /* * the CSIs are represented in the device-tree, so those @@ -322,25 +323,10 @@ static int add_ipu_internal_subdevs(struct imx_media_dev *imxmd, int ipu_id) } if (ret) - return ret; + goto remove; } return 0; -} - -int imx_media_add_ipu_internal_subdevs(struct imx_media_dev *imxmd) -{ - int ret; - - ret = add_ipu_internal_subdevs(imxmd, 0); - if (ret) - goto remove; - - ret = add_ipu_internal_subdevs(imxmd, 1); - if (ret) - goto remove; - - return 0; remove: imx_media_remove_ipu_internal_subdevs(imxmd); diff --git a/drivers/staging/media/imx/imx-media-of.c b/drivers/staging/media/imx/imx-media-of.c index a26bdeb1af34..12383f4785ad 100644 --- a/drivers/staging/media/imx/imx-media-of.c +++ b/drivers/staging/media/imx/imx-media-of.c @@ -23,36 +23,25 @@ int imx_media_of_add_csi(struct imx_media_dev *imxmd, struct device_node *csi_np) { - int ret; - if (!of_device_is_available(csi_np)) { dev_dbg(imxmd->md.dev, "%s: %pOFn not enabled\n", __func__, csi_np); - /* unavailable is not an error */ - return 0; + return -ENODEV; } /* add CSI fwnode to async notifier */ - ret = imx_media_add_async_subdev(imxmd, of_fwnode_handle(csi_np), NULL); - if (ret) { - if (ret == -EEXIST) { - /* already added, everything is fine */ - return 0; - } - - /* other error, can't continue */ - return ret; - } - - return 0; + return imx_media_add_async_subdev(imxmd, of_fwnode_handle(csi_np), + NULL); } EXPORT_SYMBOL_GPL(imx_media_of_add_csi); int imx_media_add_of_subdevs(struct imx_media_dev *imxmd, struct device_node *np) { + bool ipu_found[2] = {false, false}; struct device_node *csi_np; int i, ret; + u32 ipu_id; for (i = 0; ; i++) { csi_np = of_parse_phandle(np, "ports", i); @@ -60,12 +49,43 @@ int imx_media_add_of_subdevs(struct imx_media_dev *imxmd, break; ret = imx_media_of_add_csi(imxmd, csi_np); - of_node_put(csi_np); - if (ret) - return ret; + if (ret) { + /* unavailable or already added is not an error */ + if (ret == -ENODEV || ret == -EEXIST) { + of_node_put(csi_np); + continue; + } + + /* other error, can't continue */ + goto err_out; + } + + ret = of_alias_get_id(csi_np->parent, "ipu"); + if (ret < 0) + goto err_out; + if (ret > 1) { + ret = -EINVAL; + goto err_out; + } + + ipu_id = ret; + + if (!ipu_found[ipu_id]) { + ret = imx_media_add_ipu_internal_subdevs(imxmd, + ipu_id); + if (ret) + goto err_out; + } + + ipu_found[ipu_id] = true; } return 0; + +err_out: + imx_media_remove_ipu_internal_subdevs(imxmd); + of_node_put(csi_np); + return ret; } /* diff --git a/drivers/staging/media/imx/imx-media.h b/drivers/staging/media/imx/imx-media.h index ccbfc4438c85..dd603a6b3a70 100644 --- a/drivers/staging/media/imx/imx-media.h +++ b/drivers/staging/media/imx/imx-media.h @@ -252,7 +252,8 @@ struct imx_media_fim *imx_media_fim_init(struct v4l2_subdev *sd); void imx_media_fim_free(struct imx_media_fim *fim); /* imx-media-internal-sd.c */ -int imx_media_add_ipu_internal_subdevs(struct imx_media_dev *imxmd); +int imx_media_add_ipu_internal_subdevs(struct imx_media_dev *imxmd, + int ipu_id); int imx_media_create_ipu_internal_links(struct imx_media_dev *imxmd, struct v4l2_subdev *sd); void imx_media_remove_ipu_internal_subdevs(struct imx_media_dev *imxmd); diff --git a/drivers/staging/media/imx/imx7-media-csi.c b/drivers/staging/media/imx/imx7-media-csi.c index 3fba7c27c0ec..1ba62fcdcae8 100644 --- a/drivers/staging/media/imx/imx7-media-csi.c +++ b/drivers/staging/media/imx/imx7-media-csi.c @@ -1271,7 +1271,7 @@ static int imx7_csi_probe(struct platform_device *pdev) platform_set_drvdata(pdev, &csi->sd); ret = imx_media_of_add_csi(imxmd, node); - if (ret < 0) + if (ret < 0 && ret != -ENODEV && ret != -EEXIST) goto cleanup; ret = imx_media_dev_notifier_register(imxmd); |