isdn: kerneldoc for capiutil.c

Add kerneldoc comments for the exported funtions in capiutil.c.

Impact: documentation
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 62 insertions, 3 deletions

diff --git a/drivers/isdn/capi/capiutil.c b/drivers/isdn/capi/capiutil.c
index 29419a8d31dc..c7c29022a23a 100644
--- a/drivers/isdn/capi/capiutil.c
+++ b/drivers/isdn/capi/capiutil.c
@@ -490,7 +490,14 @@ static void pars_2_message(_cmsg * cmsg)
         }
 }
 
-/*-------------------------------------------------------*/
+/**
+ * capi_cmsg2message() - assemble CAPI 2.0 message from _cmsg structure
+ * @cmsg:       _cmsg structure
+ * @msg:        buffer for assembled message
+ *
+ * Return value: 0 for success
+ */
+
 unsigned capi_cmsg2message(_cmsg * cmsg, u8 * msg)
 {
         cmsg->m = msg;
@@ -553,7 +560,14 @@ static void message_2_pars(_cmsg * cmsg)
         }
 }
 
-/*-------------------------------------------------------*/
+/**
+ * capi_message2cmsg() - disassemble CAPI 2.0 message into _cmsg structure
+ * @cmsg:       _cmsg structure
+ * @msg:        buffer for assembled message
+ *
+ * Return value: 0 for success
+ */
+
 unsigned capi_message2cmsg(_cmsg * cmsg, u8 * msg)
 {
         memset(cmsg, 0, sizeof(_cmsg));
@@ -573,7 +587,18 @@ unsigned capi_message2cmsg(_cmsg * cmsg, u8 * msg)
         return 0;
 }
 
-/*-------------------------------------------------------*/
+/**
+ * capi_cmsg_header() - initialize header part of _cmsg structure
+ * @cmsg:       _cmsg structure
+ * @_ApplId:    ApplID field value
+ * @_Command:   Command field value
+ * @_Subcommand:        Subcommand field value
+ * @_Messagenumber:     Message Number field value
+ * @_Controller:        Controller/PLCI/NCCI field value
+ *
+ * Return value: 0 for success
+ */
+
 unsigned capi_cmsg_header(_cmsg * cmsg, u16 _ApplId,
                           u8 _Command, u8 _Subcommand,
                           u16 _Messagenumber, u32 _Controller)
@@ -641,6 +666,14 @@ static char *mnames[] =
         [0x4e] = "MANUFACTURER_RESP"
 };
 
+/**
+ * capi_cmd2str() - convert CAPI 2.0 command/subcommand number to name
+ * @cmd:        command number
+ * @subcmd:     subcommand number
+ *
+ * Return value: static string, NULL if command/subcommand unknown
+ */
+
 char *capi_cmd2str(u8 cmd, u8 subcmd)
 {
         return mnames[command_2_index(cmd, subcmd)];
@@ -879,6 +912,11 @@ init:
         return cdb;
 }
 
+/**
+ * cdebbuf_free() - free CAPI debug buffer
+ * @cdb:        buffer to free
+ */
+
 void cdebbuf_free(_cdebbuf *cdb)
 {
         if (likely(cdb == g_debbuf)) {
@@ -891,6 +929,16 @@ void cdebbuf_free(_cdebbuf *cdb)
 }
 
 
+/**
+ * capi_message2str() - format CAPI 2.0 message for printing
+ * @msg:        CAPI 2.0 message
+ *
+ * Allocates a CAPI debug buffer and fills it with a printable representation
+ * of the CAPI 2.0 message in @msg.
+ * Return value: allocated debug buffer, NULL on error
+ * The returned buffer should be freed by a call to cdebbuf_free() after use.
+ */
+
 _cdebbuf *capi_message2str(u8 * msg)
 {
         _cdebbuf *cdb;
@@ -926,6 +974,17 @@ _cdebbuf *capi_message2str(u8 * msg)
         return cdb;
 }
 
+/**
+ * capi_cmsg2str() - format _cmsg structure for printing
+ * @cmsg:       _cmsg structure
+ *
+ * Allocates a CAPI debug buffer and fills it with a printable representation
+ * of the CAPI 2.0 message stored in @cmsg by a previous call to
+ * capi_cmsg2message() or capi_message2cmsg().
+ * Return value: allocated debug buffer, NULL on error
+ * The returned buffer should be freed by a call to cdebbuf_free() after use.
+ */
+
 _cdebbuf *capi_cmsg2str(_cmsg * cmsg)
 {
         _cdebbuf *cdb;