Merge tag 'tty-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver updates from Greg KH:
 "Here's the tty and serial driver patches for 4.2-rc1.

  A number of individual driver updates, some code cleanups, and other
  minor things, full details in the shortlog.

  All have been in linux-next for a while with no reported issues"

* tag 'tty-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (152 commits)
  Doc: serial-rs485.txt: update RS485 driver interface
  Doc: tty.txt: remove mention of the BKL
  MAINTAINERS: tty: add serial docs directory
  serial: sprd: check for NULL after calling devm_clk_get
  serial: 8250_pci: Correct uartclk for xr17v35x expansion chips
  serial: 8250_pci: Add support for 12 port Exar boards
  serial: 8250_uniphier: add bindings document for UniPhier UART
  serial: core: cleanup in uart_get_baud_rate()
  serial: stm32-usart: Add STM32 USART Driver
  tty/serial: kill off set_irq_flags usage
  tty: move linux/gsmmux.h to uapi
  doc: dt: add documentation for nxp,lpc1850-uart
  serial: 8250: add LPC18xx/43xx UART driver
  serial: 8250_uniphier: add UniPhier serial driver
  serial: 8250_dw: support ACPI platforms with integrated DMA engine
  serial: of_serial: check the return value of clk_prepare_enable()
  serial: of_serial: use devm_clk_get() instead of clk_get()
  serial: earlycon: Add support for big-endian MMIO accesses
  serial: sirf: use hrtimer for data rx
  serial: sirf: correct the fifo empty_bit
  ...

9 files changed, 25 insertions, 78 deletions

diff --git a/include/linux/console_struct.h b/include/linux/console_struct.h
index e859c98d1767..e329ee2667e1 100644
--- a/include/linux/console_struct.h
+++ b/include/linux/console_struct.h
@@ -104,6 +104,7 @@ struct vc_data {
 	unsigned int    vc_resize_user;         /* resize request from user */
 	unsigned int	vc_bell_pitch;		/* Console bell pitch */
 	unsigned int	vc_bell_duration;	/* Console bell duration */
+	unsigned short	vc_cur_blink_ms;	/* Cursor blink duration */
 	struct vc_data **vc_display_fg;		/* [!] Ptr to var holding fg console for this display */
 	struct uni_pagedir *vc_uni_pagedir;
 	struct uni_pagedir **vc_uni_pagedir_loc; /* [!] Location of uni_pagedir variable for this console */
diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index 78097e7a330a..ba82c07feb95 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -12,6 +12,7 @@
 #define _LINUX_SERIAL_8250_H
 
 #include <linux/serial_core.h>
+#include <linux/serial_reg.h>
 #include <linux/platform_device.h>
 
 /*
@@ -137,6 +138,8 @@ extern int early_serial_setup(struct uart_port *port);
 
 extern unsigned int serial8250_early_in(struct uart_port *port, int offset);
 extern void serial8250_early_out(struct uart_port *port, int offset, int value);
+extern int early_serial8250_setup(struct earlycon_device *device,
+					 const char *options);
 extern void serial8250_do_set_termios(struct uart_port *port,
 		struct ktermios *termios, struct ktermios *old);
 extern int serial8250_do_startup(struct uart_port *port);
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 025dad9dcde4..297d4fa1cfe5 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -35,7 +35,7 @@
 #define uart_console(port) \
 	((port)->cons && (port)->cons->index == (port)->line)
 #else
-#define uart_console(port)      (0)
+#define uart_console(port)      ({ (void)port; 0; })
 #endif
 
 struct uart_port;
diff --git a/include/linux/serial_sci.h b/include/linux/serial_sci.h
index 6c5e3bb282b0..7c536ac5be05 100644
--- a/include/linux/serial_sci.h
+++ b/include/linux/serial_sci.h
@@ -1,6 +1,7 @@
 #ifndef __LINUX_SERIAL_SCI_H
 #define __LINUX_SERIAL_SCI_H
 
+#include <linux/bitops.h>
 #include <linux/serial_core.h>
 #include <linux/sh_dma.h>
 
@@ -10,59 +11,16 @@
 
 #define SCIx_NOT_SUPPORTED	(-1)
 
-/* SCSMR (Serial Mode Register) */
-#define SCSMR_CHR	(1 << 6)	/* 7-bit Character Length */
-#define SCSMR_PE	(1 << 5)	/* Parity Enable */
-#define SCSMR_ODD	(1 << 4)	/* Odd Parity */
-#define SCSMR_STOP	(1 << 3)	/* Stop Bit Length */
-#define SCSMR_CKS	0x0003		/* Clock Select */
-
 /* Serial Control Register (@ = not supported by all parts) */
-#define SCSCR_TIE	(1 << 7)	/* Transmit Interrupt Enable */
-#define SCSCR_RIE	(1 << 6)	/* Receive Interrupt Enable */
-#define SCSCR_TE	(1 << 5)	/* Transmit Enable */
-#define SCSCR_RE	(1 << 4)	/* Receive Enable */
-#define SCSCR_REIE	(1 << 3)	/* Receive Error Interrupt Enable @ */
-#define SCSCR_TOIE	(1 << 2)	/* Timeout Interrupt Enable @ */
-#define SCSCR_CKE1	(1 << 1)	/* Clock Enable 1 */
-#define SCSCR_CKE0	(1 << 0)	/* Clock Enable 0 */
-/* SCIFA/SCIFB only */
-#define SCSCR_TDRQE	(1 << 15)	/* Tx Data Transfer Request Enable */
-#define SCSCR_RDRQE	(1 << 14)	/* Rx Data Transfer Request Enable */
-
-/* SCxSR (Serial Status Register) on SCI */
-#define SCI_TDRE  0x80			/* Transmit Data Register Empty */
-#define SCI_RDRF  0x40			/* Receive Data Register Full */
-#define SCI_ORER  0x20			/* Overrun Error */
-#define SCI_FER   0x10			/* Framing Error */
-#define SCI_PER   0x08			/* Parity Error */
-#define SCI_TEND  0x04			/* Transmit End */
-
-#define SCI_DEFAULT_ERROR_MASK (SCI_PER | SCI_FER)
-
-/* SCxSR (Serial Status Register) on SCIF, HSCIF */
-#define SCIF_ER    0x0080		/* Receive Error */
-#define SCIF_TEND  0x0040		/* Transmission End */
-#define SCIF_TDFE  0x0020		/* Transmit FIFO Data Empty */
-#define SCIF_BRK   0x0010		/* Break Detect */
-#define SCIF_FER   0x0008		/* Framing Error */
-#define SCIF_PER   0x0004		/* Parity Error */
-#define SCIF_RDF   0x0002		/* Receive FIFO Data Full */
-#define SCIF_DR    0x0001		/* Receive Data Ready */
-
-#define SCIF_DEFAULT_ERROR_MASK (SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK)
-
-/* SCFCR (FIFO Control Register) */
-#define SCFCR_LOOP	(1 << 0)	/* Loopback Test */
-
-/* SCSPTR (Serial Port Register), optional */
-#define SCSPTR_RTSIO	(1 << 7)	/* Serial Port RTS Pin Input/Output */
-#define SCSPTR_CTSIO	(1 << 5)	/* Serial Port CTS Pin Input/Output */
-#define SCSPTR_SPB2IO	(1 << 1)	/* Serial Port Break Input/Output */
-#define SCSPTR_SPB2DT	(1 << 0)	/* Serial Port Break Data */
-
-/* HSSRR HSCIF */
-#define HSCIF_SRE	0x8000		/* Sampling Rate Register Enable */
+#define SCSCR_TIE	BIT(7)	/* Transmit Interrupt Enable */
+#define SCSCR_RIE	BIT(6)	/* Receive Interrupt Enable */
+#define SCSCR_TE	BIT(5)	/* Transmit Enable */
+#define SCSCR_RE	BIT(4)	/* Receive Enable */
+#define SCSCR_REIE	BIT(3)	/* Receive Error Interrupt Enable @ */
+#define SCSCR_TOIE	BIT(2)	/* Timeout Interrupt Enable @ */
+#define SCSCR_CKE1	BIT(1)	/* Clock Enable 1 */
+#define SCSCR_CKE0	BIT(0)	/* Clock Enable 0 */
+
 
 enum {
 	SCIx_PROBE_REGTYPE,
@@ -82,28 +40,6 @@ enum {
 	SCIx_NR_REGTYPES,
 };
 
-/*
- * SCI register subset common for all port types.
- * Not all registers will exist on all parts.
- */
-enum {
-	SCSMR,				/* Serial Mode Register */
-	SCBRR,				/* Bit Rate Register */
-	SCSCR,				/* Serial Control Register */
-	SCxSR,				/* Serial Status Register */
-	SCFCR,				/* FIFO Control Register */
-	SCFDR,				/* FIFO Data Count Register */
-	SCxTDR,				/* Transmit (FIFO) Data Register */
-	SCxRDR,				/* Receive (FIFO) Data Register */
-	SCLSR,				/* Line Status Register */
-	SCTFDR,				/* Transmit FIFO Data Count Register */
-	SCRFDR,				/* Receive FIFO Data Count Register */
-	SCSPTR,				/* Serial Port Register */
-	HSSRR,				/* Sampling Rate Register */
-
-	SCIx_NR_REGS,
-};
-
 struct device;
 
 struct plat_sci_port_ops {
@@ -113,7 +49,7 @@ struct plat_sci_port_ops {
 /*
  * Port-specific capabilities
  */
-#define SCIx_HAVE_RTSCTS	(1 << 0)
+#define SCIx_HAVE_RTSCTS	BIT(0)
 
 /*
  * Platform device specific platform_data struct
diff --git a/include/linux/tty.h b/include/linux/tty.h
index d76631f615c2..ad6c8913aa3e 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -422,7 +422,7 @@ static inline struct tty_struct *tty_kref_get(struct tty_struct *tty)
 
 extern int tty_paranoia_check(struct tty_struct *tty, struct inode *inode,
 			      const char *routine);
-extern char *tty_name(struct tty_struct *tty, char *buf);
+extern const char *tty_name(const struct tty_struct *tty);
 extern void tty_wait_until_sent(struct tty_struct *tty, long timeout);
 extern int tty_check_change(struct tty_struct *tty);
 extern void __stop_tty(struct tty_struct *tty);
diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild
index baa7c80da6af..c1c23f19d4a2 100644
--- a/include/uapi/linux/Kbuild
+++ b/include/uapi/linux/Kbuild
@@ -138,6 +138,7 @@ header-y += genetlink.h
 header-y += gen_stats.h
 header-y += gfs2_ondisk.h
 header-y += gigaset_dev.h
+header-y += gsmmux.h
 header-y += hdlcdrv.h
 header-y += hdlc.h
 header-y += hdreg.h
diff --git a/include/linux/gsmmux.h b/include/uapi/linux/gsmmux.h
index c25e9477f7c3..c06742d52856 100644
--- a/include/linux/gsmmux.h
+++ b/include/uapi/linux/gsmmux.h
@@ -1,6 +1,9 @@
 #ifndef _LINUX_GSMMUX_H
 #define _LINUX_GSMMUX_H
 
+#include <linux/if.h>
+#include <linux/ioctl.h>
+
 struct gsm_config
 {
 	unsigned int adaption;
diff --git a/include/uapi/linux/serial_core.h b/include/uapi/linux/serial_core.h
index b2122813f18a..93ba148f923e 100644
--- a/include/uapi/linux/serial_core.h
+++ b/include/uapi/linux/serial_core.h
@@ -258,4 +258,7 @@
 /* Cris v10 / v32 SoC */
 #define PORT_CRIS	112
 
+/* STM32 USART */
+#define PORT_STM32	113
+
 #endif /* _UAPILINUX_SERIAL_CORE_H */
diff --git a/include/uapi/linux/tty_flags.h b/include/uapi/linux/tty_flags.h
index fae4864737fa..072e41e45ee2 100644
--- a/include/uapi/linux/tty_flags.h
+++ b/include/uapi/linux/tty_flags.h
@@ -15,7 +15,7 @@
 #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 /* [x] Separate termios for dialin/callout */
-#define ASYNCB_SPD_HI		 4 /* Use 56000 instead of 38400 bps */
+#define ASYNCB_SPD_HI		 4 /* Use 57600 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