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authorLinus Torvalds <torvalds@linux-foundation.org>2014-06-03 09:01:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-03 09:01:02 -0700
commit49eb7b0750d9483c74e9c14ae6ea1e9d62481c3c (patch)
tree68f76b18328d070a4b5182f9ed82c2134cae16d2 /include
parent5142c33ed86acbcef5c63a63d2b7384b9210d39f (diff)
parent9ce4f8f3f45443922c98e25133b8c9790fc7949a (diff)
Merge tag 'tty-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty into next
Pull tty/serial driver updates from Greg KH: "Here is the big tty / serial driver pull request for 3.16-rc1. A variety of different serial driver fixes and updates and additions, nothing huge, and no real major core tty changes at all. All have been in linux-next for a while" * tag 'tty-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (84 commits) Revert "serial: imx: remove the DMA wait queue" serial: kgdb_nmi: Improve console integration with KDB I/O serial: kgdb_nmi: Switch from tasklets to real timers serial: kgdb_nmi: Use container_of() to locate private data serial: cpm_uart: No LF conversion in put_poll_char() serial: sirf: Fix compilation failure console: Remove superfluous readonly check console: Use explicit pointer type for vc_uni_pagedir* fields vgacon: Fix & cleanup refcounting ARM: tty: Move HVC DCC assembly to arch/arm tty/hvc/hvc_console: Fix wakeup of HVC thread on hvc_kick() drivers/tty/n_hdlc.c: replace kmalloc/memset by kzalloc vt: emulate 8- and 24-bit colour codes. printk/of_serial: fix serial console cessation part way through boot. serial: 8250_dma: check the result of TX buffer mapping serial: uart: add hw flow control support configuration tty/serial: at91: add interrupts for modem control lines tty/serial: at91: use mctrl_gpio helpers tty/serial: Add GPIOLIB helpers for controlling modem lines ARM: at91: gpio: implement get_direction ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/console_struct.h5
-rw-r--r--include/linux/platform_data/atmel.h1
-rw-r--r--include/linux/serial_core.h16
-rw-r--r--include/linux/tty_ldisc.h5
-rw-r--r--include/uapi/linux/serial_core.h8
-rw-r--r--include/uapi/linux/serial_reg.h2
6 files changed, 31 insertions, 6 deletions
diff --git a/include/linux/console_struct.h b/include/linux/console_struct.h
index 7f0c32908568..e859c98d1767 100644
--- a/include/linux/console_struct.h
+++ b/include/linux/console_struct.h
@@ -17,6 +17,7 @@
#include <linux/workqueue.h>
struct vt_struct;
+struct uni_pagedir;
#define NPAR 16
@@ -104,8 +105,8 @@ struct vc_data {
unsigned int vc_bell_pitch; /* Console bell pitch */
unsigned int vc_bell_duration; /* Console bell duration */
struct vc_data **vc_display_fg; /* [!] Ptr to var holding fg console for this display */
- unsigned long vc_uni_pagedir;
- unsigned long *vc_uni_pagedir_loc; /* [!] Location of uni_pagedir variable for this console */
+ struct uni_pagedir *vc_uni_pagedir;
+ struct uni_pagedir **vc_uni_pagedir_loc; /* [!] Location of uni_pagedir variable for this console */
bool vc_panic_force_write; /* when oops/panic this VC can accept forced output/blanking */
/* additional information is in vt_kern.h */
};
diff --git a/include/linux/platform_data/atmel.h b/include/linux/platform_data/atmel.h
index 1466443797d7..4b452c6a2f7b 100644
--- a/include/linux/platform_data/atmel.h
+++ b/include/linux/platform_data/atmel.h
@@ -84,7 +84,6 @@ struct atmel_uart_data {
short use_dma_rx; /* use receive DMA? */
void __iomem *regs; /* virt. base address, if any */
struct serial_rs485 rs485; /* rs485 settings */
- int rts_gpio; /* optional RTS GPIO */
};
/* CAN */
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index f729be981da0..7a15b5b24c0b 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -285,6 +285,22 @@ static inline int uart_poll_timeout(struct uart_port *port)
/*
* Console helpers.
*/
+struct earlycon_device {
+ struct console *con;
+ struct uart_port port;
+ char options[16]; /* e.g., 115200n8 */
+ unsigned int baud;
+};
+int setup_earlycon(char *buf, const char *match,
+ int (*setup)(struct earlycon_device *, const char *));
+
+#define EARLYCON_DECLARE(name, func) \
+static int __init name ## _setup_earlycon(char *buf) \
+{ \
+ return setup_earlycon(buf, __stringify(name), func); \
+} \
+early_param("earlycon", name ## _setup_earlycon);
+
struct uart_port *uart_get_console(struct uart_port *ports, int nr,
struct console *c);
void uart_parse_options(char *options, int *baud, int *parity, int *bits,
diff --git a/include/linux/tty_ldisc.h b/include/linux/tty_ldisc.h
index add26da2faeb..00c9d688d7b7 100644
--- a/include/linux/tty_ldisc.h
+++ b/include/linux/tty_ldisc.h
@@ -92,7 +92,10 @@
* This function is called by the low-level tty driver to signal
* that line discpline should try to send more characters to the
* low-level driver for transmission. If the line discpline does
- * not have any more data to send, it can just return.
+ * not have any more data to send, it can just return. If the line
+ * discipline does have some data to send, please arise a tasklet
+ * or workqueue to do the real data transfer. Do not send data in
+ * this hook, it may leads to a deadlock.
*
* int (*hangup)(struct tty_struct *)
*
diff --git a/include/uapi/linux/serial_core.h b/include/uapi/linux/serial_core.h
index b47dba2c1e6f..5820269aa132 100644
--- a/include/uapi/linux/serial_core.h
+++ b/include/uapi/linux/serial_core.h
@@ -211,7 +211,7 @@
/* VIA VT8500 SoC */
#define PORT_VT8500 97
-/* Xilinx PSS UART */
+/* Cadence (Xilinx Zynq) UART */
#define PORT_XUARTPS 98
/* Atheros AR933X SoC */
@@ -238,4 +238,10 @@
/* Tilera TILE-Gx UART */
#define PORT_TILEGX 106
+/* MEN 16z135 UART */
+#define PORT_MEN_Z135 107
+
+/* SC16IS74xx */
+#define PORT_SC16IS7XX 108
+
#endif /* _UAPILINUX_SERIAL_CORE_H */
diff --git a/include/uapi/linux/serial_reg.h b/include/uapi/linux/serial_reg.h
index e6322605b138..99b47058816a 100644
--- a/include/uapi/linux/serial_reg.h
+++ b/include/uapi/linux/serial_reg.h
@@ -32,7 +32,7 @@
#define UART_IIR 2 /* In: Interrupt ID Register */
#define UART_IIR_NO_INT 0x01 /* No interrupts pending */
-#define UART_IIR_ID 0x06 /* Mask for the interrupt ID */
+#define UART_IIR_ID 0x0e /* Mask for the interrupt ID */
#define UART_IIR_MSI 0x00 /* Modem status interrupt */
#define UART_IIR_THRI 0x02 /* Transmitter holding register empty */
#define UART_IIR_RDI 0x04 /* Receiver data interrupt */