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path: root/drivers/media/video/sh_mobile_csi2.c
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Diffstat (limited to 'drivers/media/video/sh_mobile_csi2.c')
-rw-r--r--drivers/media/video/sh_mobile_csi2.c135
1 files changed, 73 insertions, 62 deletions
diff --git a/drivers/media/video/sh_mobile_csi2.c b/drivers/media/video/sh_mobile_csi2.c
index 98b87481fa94..2893a0134c7e 100644
--- a/drivers/media/video/sh_mobile_csi2.c
+++ b/drivers/media/video/sh_mobile_csi2.c
@@ -16,6 +16,7 @@
#include <linux/slab.h>
#include <linux/videodev2.h>
+#include <media/sh_mobile_ceu.h>
#include <media/sh_mobile_csi2.h>
#include <media/soc_camera.h>
#include <media/v4l2-common.h>
@@ -33,7 +34,6 @@
struct sh_csi2 {
struct v4l2_subdev subdev;
struct list_head list;
- struct notifier_block notifier;
unsigned int irq;
void __iomem *base;
struct platform_device *pdev;
@@ -132,13 +132,6 @@ static struct v4l2_subdev_video_ops sh_csi2_subdev_video_ops = {
.try_mbus_fmt = sh_csi2_try_fmt,
};
-static struct v4l2_subdev_core_ops sh_csi2_subdev_core_ops;
-
-static struct v4l2_subdev_ops sh_csi2_subdev_ops = {
- .core = &sh_csi2_subdev_core_ops,
- .video = &sh_csi2_subdev_video_ops,
-};
-
static void sh_csi2_hwinit(struct sh_csi2 *priv)
{
struct sh_csi2_pdata *pdata = priv->pdev->dev.platform_data;
@@ -186,65 +179,84 @@ static unsigned long sh_csi2_query_bus_param(struct soc_camera_device *icd)
return soc_camera_apply_sensor_flags(icl, flags);
}
-static int sh_csi2_notify(struct notifier_block *nb,
- unsigned long action, void *data)
+static int sh_csi2_client_connect(struct sh_csi2 *priv)
{
- struct device *dev = data;
- struct soc_camera_device *icd = to_soc_camera_dev(dev);
- struct v4l2_device *v4l2_dev = dev_get_drvdata(dev->parent);
- struct sh_csi2 *priv =
- container_of(nb, struct sh_csi2, notifier);
struct sh_csi2_pdata *pdata = priv->pdev->dev.platform_data;
- int ret, i;
+ struct v4l2_subdev *sd, *csi2_sd = &priv->subdev;
+ struct soc_camera_device *icd = NULL;
+ struct device *dev = v4l2_get_subdevdata(&priv->subdev);
+ int i;
+
+ v4l2_device_for_each_subdev(sd, csi2_sd->v4l2_dev)
+ if (sd->grp_id) {
+ icd = (struct soc_camera_device *)sd->grp_id;
+ break;
+ }
+
+ if (!icd)
+ return -EINVAL;
for (i = 0; i < pdata->num_clients; i++)
if (&pdata->clients[i].pdev->dev == icd->pdev)
break;
- dev_dbg(dev, "%s(%p): action = %lu, found #%d\n", __func__, dev, action, i);
+ dev_dbg(dev, "%s(%p): found #%d\n", __func__, dev, i);
if (i == pdata->num_clients)
- return NOTIFY_DONE;
+ return -ENODEV;
- switch (action) {
- case BUS_NOTIFY_BOUND_DRIVER:
- snprintf(priv->subdev.name, V4L2_SUBDEV_NAME_SIZE, "%s%s",
- dev_name(v4l2_dev->dev), ".mipi-csi");
- priv->subdev.grp_id = (long)icd;
- ret = v4l2_device_register_subdev(v4l2_dev, &priv->subdev);
- dev_dbg(dev, "%s(%p): ret(register_subdev) = %d\n", __func__, priv, ret);
- if (ret < 0)
- return NOTIFY_DONE;
+ priv->client = pdata->clients + i;
- priv->client = pdata->clients + i;
+ priv->set_bus_param = icd->ops->set_bus_param;
+ priv->query_bus_param = icd->ops->query_bus_param;
+ icd->ops->set_bus_param = sh_csi2_set_bus_param;
+ icd->ops->query_bus_param = sh_csi2_query_bus_param;
- priv->set_bus_param = icd->ops->set_bus_param;
- priv->query_bus_param = icd->ops->query_bus_param;
- icd->ops->set_bus_param = sh_csi2_set_bus_param;
- icd->ops->query_bus_param = sh_csi2_query_bus_param;
+ csi2_sd->grp_id = (long)icd;
- pm_runtime_get_sync(v4l2_get_subdevdata(&priv->subdev));
+ pm_runtime_get_sync(dev);
- sh_csi2_hwinit(priv);
- break;
- case BUS_NOTIFY_UNBIND_DRIVER:
- priv->client = NULL;
+ sh_csi2_hwinit(priv);
- /* Driver is about to be unbound */
- icd->ops->set_bus_param = priv->set_bus_param;
- icd->ops->query_bus_param = priv->query_bus_param;
- priv->set_bus_param = NULL;
- priv->query_bus_param = NULL;
+ return 0;
+}
- v4l2_device_unregister_subdev(&priv->subdev);
+static void sh_csi2_client_disconnect(struct sh_csi2 *priv)
+{
+ struct soc_camera_device *icd = (struct soc_camera_device *)priv->subdev.grp_id;
- pm_runtime_put(v4l2_get_subdevdata(&priv->subdev));
- break;
- }
+ priv->client = NULL;
+ priv->subdev.grp_id = 0;
- return NOTIFY_OK;
+ /* Driver is about to be unbound */
+ icd->ops->set_bus_param = priv->set_bus_param;
+ icd->ops->query_bus_param = priv->query_bus_param;
+ priv->set_bus_param = NULL;
+ priv->query_bus_param = NULL;
+
+ pm_runtime_put(v4l2_get_subdevdata(&priv->subdev));
}
+static int sh_csi2_s_power(struct v4l2_subdev *sd, int on)
+{
+ struct sh_csi2 *priv = container_of(sd, struct sh_csi2, subdev);
+
+ if (on)
+ return sh_csi2_client_connect(priv);
+
+ sh_csi2_client_disconnect(priv);
+ return 0;
+}
+
+static struct v4l2_subdev_core_ops sh_csi2_subdev_core_ops = {
+ .s_power = sh_csi2_s_power,
+};
+
+static struct v4l2_subdev_ops sh_csi2_subdev_ops = {
+ .core = &sh_csi2_subdev_core_ops,
+ .video = &sh_csi2_subdev_video_ops,
+};
+
static __devinit int sh_csi2_probe(struct platform_device *pdev)
{
struct resource *res;
@@ -274,14 +286,6 @@ static __devinit int sh_csi2_probe(struct platform_device *pdev)
return -ENOMEM;
priv->irq = irq;
- priv->notifier.notifier_call = sh_csi2_notify;
-
- /* We MUST attach after the MIPI sensor */
- ret = bus_register_notifier(&soc_camera_bus_type, &priv->notifier);
- if (ret < 0) {
- dev_err(&pdev->dev, "CSI2 cannot register notifier\n");
- goto ernotify;
- }
if (!request_mem_region(res->start, resource_size(res), pdev->name)) {
dev_err(&pdev->dev, "CSI2 register region already claimed\n");
@@ -297,11 +301,17 @@ static __devinit int sh_csi2_probe(struct platform_device *pdev)
}
priv->pdev = pdev;
+ platform_set_drvdata(pdev, priv);
v4l2_subdev_init(&priv->subdev, &sh_csi2_subdev_ops);
v4l2_set_subdevdata(&priv->subdev, &pdev->dev);
- platform_set_drvdata(pdev, priv);
+ snprintf(priv->subdev.name, V4L2_SUBDEV_NAME_SIZE, "%s.mipi-csi",
+ dev_name(pdata->v4l2_dev->dev));
+ ret = v4l2_device_register_subdev(pdata->v4l2_dev, &priv->subdev);
+ dev_dbg(&pdev->dev, "%s(%p): ret(register_subdev) = %d\n", __func__, priv, ret);
+ if (ret < 0)
+ goto esdreg;
pm_runtime_enable(&pdev->dev);
@@ -309,11 +319,11 @@ static __devinit int sh_csi2_probe(struct platform_device *pdev)
return 0;
+esdreg:
+ iounmap(priv->base);
eremap:
release_mem_region(res->start, resource_size(res));
ereqreg:
- bus_unregister_notifier(&soc_camera_bus_type, &priv->notifier);
-ernotify:
kfree(priv);
return ret;
@@ -324,7 +334,7 @@ static __devexit int sh_csi2_remove(struct platform_device *pdev)
struct sh_csi2 *priv = platform_get_drvdata(pdev);
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- bus_unregister_notifier(&soc_camera_bus_type, &priv->notifier);
+ v4l2_device_unregister_subdev(&priv->subdev);
pm_runtime_disable(&pdev->dev);
iounmap(priv->base);
release_mem_region(res->start, resource_size(res));
@@ -335,8 +345,9 @@ static __devexit int sh_csi2_remove(struct platform_device *pdev)
}
static struct platform_driver __refdata sh_csi2_pdrv = {
- .remove = __devexit_p(sh_csi2_remove),
- .driver = {
+ .remove = __devexit_p(sh_csi2_remove),
+ .probe = sh_csi2_probe,
+ .driver = {
.name = "sh-mobile-csi2",
.owner = THIS_MODULE,
},
@@ -344,7 +355,7 @@ static struct platform_driver __refdata sh_csi2_pdrv = {
static int __init sh_csi2_init(void)
{
- return platform_driver_probe(&sh_csi2_pdrv, sh_csi2_probe);
+ return platform_driver_register(&sh_csi2_pdrv);
}
static void __exit sh_csi2_exit(void)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-30 09:12:39 +0000