From a9bf24d26fd28acaed839977e1d050c468d5a55e Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 16 Sep 2009 10:24:52 -0300 Subject: staging-specs: Move xml entities to kernel Documentation/DocBook From: Mauro Carvalho Chehab kernel-sync: Priority: normal Signed-off-by: Mauro Carvalho Chehab --- linux/Documentation/DocBook/dvb/ca.xml | 221 +++++++++++++++++++++++++++++++++ 1 file changed, 221 insertions(+) create mode 100644 linux/Documentation/DocBook/dvb/ca.xml (limited to 'linux/Documentation/DocBook/dvb/ca.xml') diff --git a/linux/Documentation/DocBook/dvb/ca.xml b/linux/Documentation/DocBook/dvb/ca.xml new file mode 100644 index 000000000..b1f1d2fad --- /dev/null +++ b/linux/Documentation/DocBook/dvb/ca.xml @@ -0,0 +1,221 @@ +DVB CA Device +The DVB CA device controls the conditional access hardware. It can be accessed through +/dev/dvb/adapter0/ca0. Data types and and ioctl definitions can be accessed by +including linux/dvb/ca.h in your application. + + +
+CA Data Types + + +
+ca_slot_info_t + + /⋆ slot interface types and info ⋆/ + + typedef struct ca_slot_info_s { + int num; /⋆ slot number ⋆/ + + int type; /⋆ CA interface this slot supports ⋆/ + #define CA_CI 1 /⋆ CI high level interface ⋆/ + #define CA_CI_LINK 2 /⋆ CI link layer level interface ⋆/ + #define CA_CI_PHYS 4 /⋆ CI physical layer level interface ⋆/ + #define CA_SC 128 /⋆ simple smart card interface ⋆/ + + unsigned int flags; + #define CA_CI_MODULE_PRESENT 1 /⋆ module (or card) inserted ⋆/ + #define CA_CI_MODULE_READY 2 + } ca_slot_info_t; + + +
+
+ca_descr_info_t + + typedef struct ca_descr_info_s { + unsigned int num; /⋆ number of available descramblers (keys) ⋆/ + unsigned int type; /⋆ type of supported scrambling system ⋆/ + #define CA_ECD 1 + #define CA_NDS 2 + #define CA_DSS 4 + } ca_descr_info_t; + + +
+
+ca_cap_t + + typedef struct ca_cap_s { + unsigned int slot_num; /⋆ total number of CA card and module slots ⋆/ + unsigned int slot_type; /⋆ OR of all supported types ⋆/ + unsigned int descr_num; /⋆ total number of descrambler slots (keys) ⋆/ + unsigned int descr_type;/⋆ OR of all supported types ⋆/ + } ca_cap_t; + + +
+
+ca_msg_t + + /⋆ a message to/from a CI-CAM ⋆/ + typedef struct ca_msg_s { + unsigned int index; + unsigned int type; + unsigned int length; + unsigned char msg[256]; + } ca_msg_t; + + +
+
+ca_descr_t + + typedef struct ca_descr_s { + unsigned int index; + unsigned int parity; + unsigned char cw[8]; + } ca_descr_t; + +
+
+CA Function Calls + + +
+open() +DESCRIPTION + + +This system call opens a named ca device (e.g. /dev/ost/ca) for subsequent use. +When an open() call has succeeded, the device will be ready for use. + The significance of blocking or non-blocking mode is described in the + documentation for functions where there is a difference. It does not affect the + semantics of the open() call itself. A device opened in blocking mode can later + be put into non-blocking mode (and vice versa) using the F_SETFL command + of the fcntl system call. This is a standard system call, documented in the Linux + manual page for fcntl. Only one user can open the CA Device in O_RDWR + mode. All other attempts to open the device in this mode will fail, and an error + code will be returned. + + +SYNOPSIS + + +int open(const char ⋆deviceName, int flags); + + +PARAMETERS + + +const char + *deviceName + +Name of specific video device. + + +int flags + +A bit-wise OR of the following flags: + + + +O_RDONLY read-only access + + + +O_RDWR read/write access + + + +O_NONBLOCK open in non-blocking mode + + + +(blocking mode is the default) + + +ERRORS + + +ENODEV + +Device driver not loaded/available. + + +EINTERNAL + +Internal error. + + +EBUSY + +Device or resource busy. + + +EINVAL + +Invalid argument. + + + +
+
+close() +DESCRIPTION + + +This system call closes a previously opened audio device. + + +SYNOPSIS + + +int close(int fd); + + +PARAMETERS + + +int fd + +File descriptor returned by a previous call to open(). + + +ERRORS + + +EBADF + +fd is not a valid open file descriptor. + + +
+
-- cgit v1.2.3