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adapt to mainline kernel changes

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This commit is contained in:
internal
2023-05-05 13:08:01 +02:00
parent 626aa6d7be
commit e9399971f8
12 changed files with 279 additions and 128 deletions
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14
include/linux/media/dvb_frontend.h
View File

@@ -369,6 +369,10 @@ struct dvb_frontend_internal_info {
* allocated by the driver.
* @init: callback function used to initialize the tuner device.
* @sleep: callback function used to put the tuner to sleep.
* @suspend: callback function used to inform that the Kernel will
* suspend.
* @resume: callback function used to inform that the Kernel is
* resuming from suspend.
* @write: callback function used by some demod legacy drivers to
* allow other drivers to write data into their registers.
* Should not be used on new drivers.
@@ -438,7 +442,6 @@ struct dvb_frontend_internal_info {
* @analog_ops: pointer to &struct analog_demod_ops
*/
struct dvb_frontend_ops {
struct dvb_frontend_internal_info info;
u8 delsys[MAX_DELSYS];
@@ -449,6 +452,8 @@ struct dvb_frontend_ops {
int (*init)(struct dvb_frontend* fe);
int (*sleep)(struct dvb_frontend* fe);
int (*suspend)(struct dvb_frontend *fe);
int (*resume)(struct dvb_frontend *fe);
int (*write)(struct dvb_frontend* fe, const u8 buf[], int len);
@@ -765,7 +770,8 @@ void dvb_frontend_detach(struct dvb_frontend *fe);
* &dvb_frontend_ops.tuner_ops.suspend\(\) is available, it calls it. Otherwise,
* it will call &dvb_frontend_ops.tuner_ops.sleep\(\), if available.
*
* It will also call &dvb_frontend_ops.sleep\(\) to put the demod to suspend.
* It will also call &dvb_frontend_ops.suspend\(\) to put the demod to suspend,
* if available. Otherwise it will call &dvb_frontend_ops.sleep\(\).
*
* The drivers should also call dvb_frontend_suspend\(\) as part of their
* handler for the &device_driver.suspend\(\).
@@ -779,7 +785,9 @@ int dvb_frontend_suspend(struct dvb_frontend *fe);
*
* This function resumes the usual operation of the tuner after resume.
*
* In order to resume the frontend, it calls the demod &dvb_frontend_ops.init\(\).
* In order to resume the frontend, it calls the demod
* &dvb_frontend_ops.resume\(\) if available. Otherwise it calls demod
* &dvb_frontend_ops.init\(\).
*
* If &dvb_frontend_ops.tuner_ops.resume\(\) is available, It, it calls it.
* Otherwise,t will call &dvb_frontend_ops.tuner_ops.init\(\), if available.

2
include/linux/media/dvb_ringbuffer.h
View File

@@ -214,7 +214,7 @@ extern ssize_t dvb_ringbuffer_write_user(struct dvb_ringbuffer *rbuf,
* @buf: Buffer to write.
* @len: Length of buffer (currently limited to 65535 bytes max).
*
* Return: Number of bytes written, or -EFAULT, -ENOMEM, -EVINAL.
* Return: Number of bytes written, or -EFAULT, -ENOMEM, -EINVAL.
*/
extern ssize_t dvb_ringbuffer_pkt_write(struct dvb_ringbuffer *rbuf, u8 *buf,
size_t len);

41
include/linux/media/dvbdev.h
View File

@@ -35,7 +35,7 @@
#endif
#endif
#define DVB_MAX_ADAPTERS 64
#define DVB_MAX_ADAPTERS 64
#define DVB_UNSET (-1)
@@ -96,7 +96,11 @@ struct dvb_frontend;
* @device: pointer to struct device
* @module: pointer to struct module
* @mfe_shared: indicates mutually exclusive frontends.
* Use of this flag is currently deprecated.
* 1 = legacy exclusion behavior: blocking any open() call
* 2 = enhanced exclusion behavior, emulating the standard
* behavior of busy frontends: allowing read-only sharing
* and otherwise returning immediately with -EBUSY when any
* of the frontends is already opened with write access.
* @mfe_dvbdev: Frontend device in use, in the case of MFE
* @mfe_lock: Lock to prevent using the other frontends when MFE is
* used.
@@ -135,6 +139,7 @@ struct dvb_adapter {
* struct dvb_device - represents a DVB device node
*
* @list_head: List head with all DVB devices
* @ref: reference counter
* @fops: pointer to struct file_operations
* @adapter: pointer to the adapter that holds this device node
* @type: type of the device, as defined by &enum dvb_device_type.
@@ -165,6 +170,7 @@ struct dvb_adapter {
*/
struct dvb_device {
struct list_head list_head;
struct kref ref;
const struct file_operations *fops;
struct dvb_adapter *adapter;
enum dvb_device_type type;
@@ -196,6 +202,20 @@ struct dvb_device {
void *priv;
};
/**
* dvb_device_get - Increase dvb_device reference
*
* @dvbdev: pointer to struct dvb_device
*/
struct dvb_device *dvb_device_get(struct dvb_device *dvbdev);
/**
* dvb_device_put - Decrease dvb_device reference
*
* @dvbdev: pointer to struct dvb_device
*/
void dvb_device_put(struct dvb_device *dvbdev);
/**
* dvb_register_adapter - Registers a new DVB adapter
*
@@ -240,29 +260,16 @@ int dvb_register_device(struct dvb_adapter *adap,
/**
* dvb_remove_device - Remove a registered DVB device
*
* This does not free memory. To do that, call dvb_free_device().
* This does not free memory. dvb_free_device() will do that when
* reference counter is empty
*
* @dvbdev: pointer to struct dvb_device
*/
void dvb_remove_device(struct dvb_device *dvbdev);
/**
* dvb_free_device - Free memory occupied by a DVB device.
*
* Call dvb_unregister_device() before calling this function.
*
* @dvbdev: pointer to struct dvb_device
*/
void dvb_free_device(struct dvb_device *dvbdev);
/**
* dvb_unregister_device - Unregisters a DVB device
*
* This is a combination of dvb_remove_device() and dvb_free_device().
* Using this function is usually a mistake, and is often an indicator
* for a use-after-free bug (when a userspace process keeps a file
* handle to a detached device).
*
* @dvbdev: pointer to struct dvb_device
*/
void dvb_unregister_device(struct dvb_device *dvbdev);