diff options
Diffstat (limited to 'doc/driver-model/UDM-stdio.txt')
| -rw-r--r-- | doc/driver-model/UDM-stdio.txt | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/doc/driver-model/UDM-stdio.txt b/doc/driver-model/UDM-stdio.txt index a6c484f..c0b1c90 100644 --- a/doc/driver-model/UDM-stdio.txt +++ b/doc/driver-model/UDM-stdio.txt @@ -17,29 +17,29 @@ Each device that wants to register with STDIO subsystem has to define struct stdio_dev, defined in include/stdio_dev.h and containing the following fields: struct stdio_dev { - int flags; /* Device flags: input/output/system */ - int ext; /* Supported extensions */ - char name[16]; /* Device name */ + int flags; /* Device flags: input/output/system */ + int ext; /* Supported extensions */ + char name[16]; /* Device name */ /* GENERAL functions */ - int (*start) (void); /* To start the device */ - int (*stop) (void); /* To stop the device */ + int (*start) (void); /* To start the device */ + int (*stop) (void); /* To stop the device */ /* OUTPUT functions */ - void (*putc) (const char c); /* To put a char */ - void (*puts) (const char *s); /* To put a string (accelerator) */ + void (*putc) (const char c); /* To put a char */ + void (*puts) (const char *s); /* To put a string (accelerator) */ /* INPUT functions */ - int (*tstc) (void); /* To test if a char is ready... */ - int (*getc) (void); /* To get that char */ + int (*tstc) (void); /* To test if a char is ready... */ + int (*getc) (void); /* To get that char */ /* Other functions */ - void *priv; /* Private extensions */ - struct list_head list; + void *priv; /* Private extensions */ + struct list_head list; }; Currently used flags are DEV_FLAGS_INPUT, DEV_FLAGS_OUTPUT and DEV_FLAGS_SYSTEM, @@ -139,13 +139,13 @@ II) Approach purpose. The following flags will be defined: STDIO_FLG_STDIN ..... This device will be used as an input device. All input - from all devices with this flag set will be received + from all devices with this flag set will be received and passed to the upper layers. STDIO_FLG_STDOUT .... This device will be used as an output device. All - output sent to stdout will be routed to all devices + output sent to stdout will be routed to all devices with this flag set. STDIO_FLG_STDERR .... This device will be used as an standard error output - device. All output sent to stderr will be routed to + device. All output sent to stderr will be routed to all devices with this flag set. The "list" member of this structure allows to have a linked list of all |