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authorMauro Carvalho Chehab <mchehab@osg.samsung.com>2016-03-15 07:48:28 -0300
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2016-03-15 07:48:28 -0300
commit8331c055b23c4155b896a2c3791704ae68992d2b (patch)
tree7b8055caa7363b2194dd33de8ba27ee96a9d2505 /drivers/media/media-device.c
parentb562e44f507e863c6792946e4e1b1449fbbac85d (diff)
parent840f5b0572ea9ddaca2bf5540a171013e92c97bd (diff)
Merge commit '840f5b0572ea' into v4l_for_linusmedia/v4.6-1
* commit '840f5b0572ea': (381 commits) media: au0828 disable tuner to demod link in au0828_media_device_register() [media] touptek: cast char types on %x printk [media] touptek: don't DMA at the stack [media] mceusb: use %*ph for small buffer dumps [media] v4l: exynos4-is: Drop unneeded check when setting up fimc-lite links [media] v4l: vsp1: Check if an entity is a subdev with the right function [media] hide unused functions for !MEDIA_CONTROLLER [media] em28xx: fix Terratec Grabby AC97 codec detection [media] media: add prefixes to interface types [media] media: rc: nuvoton: switch attribute wakeup_data to text [media] v4l2-ioctl: fix YUV422P pixel format description [media] media: fix null pointer dereference in v4l_vb2q_enable_media_source() [media] v4l2-mc.h: fix yet more compiler errors [media] staging/media: add missing TODO files [media] media.h: always start with 1 for the audio entities [media] sound/usb: Use meaninful names for goto labels [media] v4l2-mc.h: fix compiler warnings [media] media: au0828 audio mixer isn't connected to decoder [media] sound/usb: Use Media Controller API to share media resources [media] dw2102: add support for TeVii S662 ...
Diffstat (limited to 'drivers/media/media-device.c')
-rw-r--r--drivers/media/media-device.c145
1 files changed, 134 insertions, 11 deletions
diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c
index e9219f528d7e..6e43c95629ea 100644
--- a/drivers/media/media-device.c
+++ b/drivers/media/media-device.c
@@ -30,6 +30,8 @@
#include <linux/media.h>
#include <linux/slab.h>
#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/usb.h>
#include <media/media-device.h>
#include <media/media-devnode.h>
@@ -41,6 +43,11 @@
* Userspace API
*/
+static inline void __user *media_get_uptr(__u64 arg)
+{
+ return (void __user *)(uintptr_t)arg;
+}
+
static int media_device_open(struct file *filp)
{
return 0;
@@ -58,7 +65,11 @@ static int media_device_get_info(struct media_device *dev,
memset(&info, 0, sizeof(info));
- strlcpy(info.driver, dev->dev->driver->name, sizeof(info.driver));
+ if (dev->driver_name[0])
+ strlcpy(info.driver, dev->driver_name, sizeof(info.driver));
+ else
+ strlcpy(info.driver, dev->dev->driver->name, sizeof(info.driver));
+
strlcpy(info.model, dev->model, sizeof(info.model));
strlcpy(info.serial, dev->serial, sizeof(info.serial));
strlcpy(info.bus_info, dev->bus_info, sizeof(info.bus_info));
@@ -257,7 +268,6 @@ static long media_device_setup_link(struct media_device *mdev,
return ret;
}
-#if 0 /* Let's postpone it to Kernel 4.6 */
static long __media_device_get_topology(struct media_device *mdev,
struct media_v2_topology *topo)
{
@@ -265,10 +275,10 @@ static long __media_device_get_topology(struct media_device *mdev,
struct media_interface *intf;
struct media_pad *pad;
struct media_link *link;
- struct media_v2_entity kentity, *uentity;
- struct media_v2_interface kintf, *uintf;
- struct media_v2_pad kpad, *upad;
- struct media_v2_link klink, *ulink;
+ struct media_v2_entity kentity, __user *uentity;
+ struct media_v2_interface kintf, __user *uintf;
+ struct media_v2_pad kpad, __user *upad;
+ struct media_v2_link klink, __user *ulink;
unsigned int i;
int ret = 0;
@@ -413,7 +423,6 @@ static long media_device_get_topology(struct media_device *mdev,
return 0;
}
-#endif
static long media_device_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg)
@@ -447,14 +456,13 @@ static long media_device_ioctl(struct file *filp, unsigned int cmd,
mutex_unlock(&dev->graph_mutex);
break;
-#if 0 /* Let's postpone it to Kernel 4.6 */
case MEDIA_IOC_G_TOPOLOGY:
mutex_lock(&dev->graph_mutex);
ret = media_device_get_topology(dev,
(struct media_v2_topology __user *)arg);
mutex_unlock(&dev->graph_mutex);
break;
-#endif
+
default:
ret = -ENOIOCTLCMD;
}
@@ -503,9 +511,7 @@ static long media_device_compat_ioctl(struct file *filp, unsigned int cmd,
case MEDIA_IOC_DEVICE_INFO:
case MEDIA_IOC_ENUM_ENTITIES:
case MEDIA_IOC_SETUP_LINK:
-#if 0 /* Let's postpone it to Kernel 4.6 */
case MEDIA_IOC_G_TOPOLOGY:
-#endif
return media_device_ioctl(filp, cmd, arg);
case MEDIA_IOC_ENUM_LINKS32:
@@ -564,6 +570,7 @@ static void media_device_release(struct media_devnode *mdev)
int __must_check media_device_register_entity(struct media_device *mdev,
struct media_entity *entity)
{
+ struct media_entity_notify *notify, *next;
unsigned int i;
int ret;
@@ -603,8 +610,33 @@ int __must_check media_device_register_entity(struct media_device *mdev,
media_gobj_create(mdev, MEDIA_GRAPH_PAD,
&entity->pads[i].graph_obj);
+ /* invoke entity_notify callbacks */
+ list_for_each_entry_safe(notify, next, &mdev->entity_notify, list) {
+ (notify)->notify(entity, notify->notify_data);
+ }
+
spin_unlock(&mdev->lock);
+ mutex_lock(&mdev->graph_mutex);
+ if (mdev->entity_internal_idx_max
+ >= mdev->pm_count_walk.ent_enum.idx_max) {
+ struct media_entity_graph new = { .top = 0 };
+
+ /*
+ * Initialise the new graph walk before cleaning up
+ * the old one in order not to spoil the graph walk
+ * object of the media device if graph walk init fails.
+ */
+ ret = media_entity_graph_walk_init(&new, mdev);
+ if (ret) {
+ mutex_unlock(&mdev->graph_mutex);
+ return ret;
+ }
+ media_entity_graph_walk_cleanup(&mdev->pm_count_walk);
+ mdev->pm_count_walk = new;
+ }
+ mutex_unlock(&mdev->graph_mutex);
+
return 0;
}
EXPORT_SYMBOL_GPL(media_device_register_entity);
@@ -636,6 +668,8 @@ static void __media_device_unregister_entity(struct media_entity *entity)
/* Remove the entity */
media_gobj_destroy(&entity->graph_obj);
+ /* invoke entity_notify callbacks to handle entity removal?? */
+
entity->graph_obj.mdev = NULL;
}
@@ -668,6 +702,7 @@ void media_device_init(struct media_device *mdev)
INIT_LIST_HEAD(&mdev->interfaces);
INIT_LIST_HEAD(&mdev->pads);
INIT_LIST_HEAD(&mdev->links);
+ INIT_LIST_HEAD(&mdev->entity_notify);
spin_lock_init(&mdev->lock);
mutex_init(&mdev->graph_mutex);
ida_init(&mdev->entity_internal_idx);
@@ -680,6 +715,7 @@ void media_device_cleanup(struct media_device *mdev)
{
ida_destroy(&mdev->entity_internal_idx);
mdev->entity_internal_idx_max = 0;
+ media_entity_graph_walk_cleanup(&mdev->pm_count_walk);
mutex_destroy(&mdev->graph_mutex);
}
EXPORT_SYMBOL_GPL(media_device_cleanup);
@@ -713,11 +749,40 @@ int __must_check __media_device_register(struct media_device *mdev,
}
EXPORT_SYMBOL_GPL(__media_device_register);
+int __must_check media_device_register_entity_notify(struct media_device *mdev,
+ struct media_entity_notify *nptr)
+{
+ spin_lock(&mdev->lock);
+ list_add_tail(&nptr->list, &mdev->entity_notify);
+ spin_unlock(&mdev->lock);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(media_device_register_entity_notify);
+
+/*
+ * Note: Should be called with mdev->lock held.
+ */
+static void __media_device_unregister_entity_notify(struct media_device *mdev,
+ struct media_entity_notify *nptr)
+{
+ list_del(&nptr->list);
+}
+
+void media_device_unregister_entity_notify(struct media_device *mdev,
+ struct media_entity_notify *nptr)
+{
+ spin_lock(&mdev->lock);
+ __media_device_unregister_entity_notify(mdev, nptr);
+ spin_unlock(&mdev->lock);
+}
+EXPORT_SYMBOL_GPL(media_device_unregister_entity_notify);
+
void media_device_unregister(struct media_device *mdev)
{
struct media_entity *entity;
struct media_entity *next;
struct media_interface *intf, *tmp_intf;
+ struct media_entity_notify *notify, *nextp;
if (mdev == NULL)
return;
@@ -734,6 +799,10 @@ void media_device_unregister(struct media_device *mdev)
list_for_each_entry_safe(entity, next, &mdev->entities, graph_obj.list)
__media_device_unregister_entity(entity);
+ /* Remove all entity_notify callbacks from the media device */
+ list_for_each_entry_safe(notify, nextp, &mdev->entity_notify, list)
+ __media_device_unregister_entity_notify(mdev, notify);
+
/* Remove all interfaces from the media device */
list_for_each_entry_safe(intf, tmp_intf, &mdev->interfaces,
graph_obj.list) {
@@ -777,4 +846,58 @@ struct media_device *media_device_find_devres(struct device *dev)
}
EXPORT_SYMBOL_GPL(media_device_find_devres);
+void media_device_pci_init(struct media_device *mdev,
+ struct pci_dev *pci_dev,
+ const char *name)
+{
+#ifdef CONFIG_PCI
+ mdev->dev = &pci_dev->dev;
+
+ if (name)
+ strlcpy(mdev->model, name, sizeof(mdev->model));
+ else
+ strlcpy(mdev->model, pci_name(pci_dev), sizeof(mdev->model));
+
+ sprintf(mdev->bus_info, "PCI:%s", pci_name(pci_dev));
+
+ mdev->hw_revision = (pci_dev->subsystem_vendor << 16)
+ | pci_dev->subsystem_device;
+
+ mdev->driver_version = LINUX_VERSION_CODE;
+
+ media_device_init(mdev);
+#endif
+}
+EXPORT_SYMBOL_GPL(media_device_pci_init);
+
+void __media_device_usb_init(struct media_device *mdev,
+ struct usb_device *udev,
+ const char *board_name,
+ const char *driver_name)
+{
+#ifdef CONFIG_USB
+ mdev->dev = &udev->dev;
+
+ if (driver_name)
+ strlcpy(mdev->driver_name, driver_name,
+ sizeof(mdev->driver_name));
+
+ if (board_name)
+ strlcpy(mdev->model, board_name, sizeof(mdev->model));
+ else if (udev->product)
+ strlcpy(mdev->model, udev->product, sizeof(mdev->model));
+ else
+ strlcpy(mdev->model, "unknown model", sizeof(mdev->model));
+ if (udev->serial)
+ strlcpy(mdev->serial, udev->serial, sizeof(mdev->serial));
+ usb_make_path(udev, mdev->bus_info, sizeof(mdev->bus_info));
+ mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
+ mdev->driver_version = LINUX_VERSION_CODE;
+
+ media_device_init(mdev);
+#endif
+}
+EXPORT_SYMBOL_GPL(__media_device_usb_init);
+
+
#endif /* CONFIG_MEDIA_CONTROLLER */

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