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Diffstat (limited to 'include/uapi/linux/tty_flags.h')
-rw-r--r--include/uapi/linux/tty_flags.h19
1 files changed, 13 insertions, 6 deletions
diff --git a/include/uapi/linux/tty_flags.h b/include/uapi/linux/tty_flags.h
index eefcb48..fae4864 100644
--- a/include/uapi/linux/tty_flags.h
+++ b/include/uapi/linux/tty_flags.h
@@ -6,27 +6,31 @@
* shared by the tty_port flags structures.
*
* Define ASYNCB_* for convenient use with {test,set,clear}_bit.
+ *
+ * Bits [0..ASYNCB_LAST_USER] are userspace defined/visible/changeable
+ * [x] in the bit comments indicates the flag is defunct and no longer used.
*/
#define ASYNCB_HUP_NOTIFY 0 /* Notify getty on hangups and closes
* on the callout port */
#define ASYNCB_FOURPORT 1 /* Set OU1, OUT2 per AST Fourport settings */
#define ASYNCB_SAK 2 /* Secure Attention Key (Orange book) */
-#define ASYNCB_SPLIT_TERMIOS 3 /* Separate termios for dialin/callout */
+#define ASYNCB_SPLIT_TERMIOS 3 /* [x] Separate termios for dialin/callout */
#define ASYNCB_SPD_HI 4 /* Use 56000 instead of 38400 bps */
#define ASYNCB_SPD_VHI 5 /* Use 115200 instead of 38400 bps */
#define ASYNCB_SKIP_TEST 6 /* Skip UART test during autoconfiguration */
#define ASYNCB_AUTO_IRQ 7 /* Do automatic IRQ during
* autoconfiguration */
-#define ASYNCB_SESSION_LOCKOUT 8 /* Lock out cua opens based on session */
-#define ASYNCB_PGRP_LOCKOUT 9 /* Lock out cua opens based on pgrp */
-#define ASYNCB_CALLOUT_NOHUP 10 /* Don't do hangups for cua device */
+#define ASYNCB_SESSION_LOCKOUT 8 /* [x] Lock out cua opens based on session */
+#define ASYNCB_PGRP_LOCKOUT 9 /* [x] Lock out cua opens based on pgrp */
+#define ASYNCB_CALLOUT_NOHUP 10 /* [x] Don't do hangups for cua device */
#define ASYNCB_HARDPPS_CD 11 /* Call hardpps when CD goes high */
#define ASYNCB_SPD_SHI 12 /* Use 230400 instead of 38400 bps */
#define ASYNCB_LOW_LATENCY 13 /* Request low latency behaviour */
#define ASYNCB_BUGGY_UART 14 /* This is a buggy UART, skip some safety
* checks. Note: can be dangerous! */
-#define ASYNCB_AUTOPROBE 15 /* Port was autoprobed by PCI or PNP code */
-#define ASYNCB_LAST_USER 15
+#define ASYNCB_AUTOPROBE 15 /* [x] Port was autoprobed by PCI/PNP code */
+#define ASYNCB_MAGIC_MULTIPLIER 16 /* Use special CLK or divisor */
+#define ASYNCB_LAST_USER 16
/* Internal flags used only by kernel */
#define ASYNCB_INITIALIZED 31 /* Serial port was initialized */
@@ -57,8 +61,11 @@
#define ASYNC_LOW_LATENCY (1U << ASYNCB_LOW_LATENCY)
#define ASYNC_BUGGY_UART (1U << ASYNCB_BUGGY_UART)
#define ASYNC_AUTOPROBE (1U << ASYNCB_AUTOPROBE)
+#define ASYNC_MAGIC_MULTIPLIER (1U << ASYNCB_MAGIC_MULTIPLIER)
#define ASYNC_FLAGS ((1U << (ASYNCB_LAST_USER + 1)) - 1)
+#define ASYNC_DEPRECATED (ASYNC_SESSION_LOCKOUT | ASYNC_PGRP_LOCKOUT | \
+ ASYNC_CALLOUT_NOHUP | ASYNC_AUTOPROBE)
#define ASYNC_USR_MASK (ASYNC_SPD_MASK|ASYNC_CALLOUT_NOHUP| \
ASYNC_LOW_LATENCY)
#define ASYNC_SPD_CUST (ASYNC_SPD_HI|ASYNC_SPD_VHI)
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