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Author SHA1 Message Date
Peter Hurley 998b4a4571 tty: Improve tty_debug() macro 
Incorporate suggestions for tty core debug macro improvements
 - printk(KERN_DEBUG) => pr_debug()
 - ##args => ##__VA_ARGS__
 - remove do {} while()
 - output tty_name() first

cc: Joe Perches <joe@perches.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Russell King 9f25bc510e tty: amba-pl011: prepare REG_* register indexes 
Prepare for REG_* register accessors.  This change involves introducing
pl011_reg_to_offset() to convert REG_* to the hardware register offset,
and converting all call sites to use REG_* names.  We need to fix up
locations where we check for equivalence of register offsets as well.

Much of this change was made via these sed expressions:
s/ST_UART01[1x]\(_[^_]*\|_LCRH_[TR]X\)\>/REG_ST\1/
s/UART01[1x]_\(DR\|RSR\|ECR\|FR\|ILPR\|[IF]BRD\|LCRH\|CR\|IFLS\|IMSC\|RIS\|MIS\|ICR\|DMACR\)\>/REG_\1/g

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Russell King 7fe9a5a9d9 tty: amba-pl011: add helper to detect split LCRH register 
Add a helper to detect the split LCRH register found on ST variants.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Russell King b2a4e24c2e tty: amba-pl011: convert accessor functions to take uart_amba_port 
Convert the new accessor functions to take the uart_amba_port instead
of the port base address.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Russell King 7583633921 tty: amba-pl011: add register accessor functions 
Add register accessor functions to amba-pl011.  Much of this
transformation was done using the sed expression below, with any
left-overs fixed up manually afterwards, and code formatted to remain
within coding style.

s/readw(\(uap->port.membase\|regs\|port->membase\) +/pl011_read(\1,/g
s/writew(\(.*\) +/pl011_write(\1,/g

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Masahiro Yamada bd94c4077a serial: support 16-bit register interface for console 
Currently, 8-bit (MMIO) and 32-bit (MMIO32) register interfaces are
supported for the 8250 console, but the 16-bit (MMIO16) is not.
The 8250 UART device on my board is connected to a 16-bit bus and
my main motivation is to use earlycon with it.
(Refer to arch/arm/boot/dts/uniphier-support-card.dtsi)

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Masahiro Yamada 004e2ed5cc serial: 8250_early: squash wait_for_xmitr() into serial_putc() 
Now, wait_for_xmitr() is only called from serial_putc(), and both
are short enough.  They can be merged into a single function.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Masahiro Yamada f2bfdb0628 serial: 8250_early: confirm empty transmitter after sending characters 
The current code waits until the transmitter becomes empty,
before sending each character, and after finishing the whole string.
This seems a bit redundant.

It can be more efficient by checking the transmitter only after sending
each character.  This should be safe because the transmitter is already
empty at the first entry of serial_putc().

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Masahiro Yamada 2cda227bba serial: 8250_early: do not save and restore IER in write callback 
The IER has already been masked in early_serial8250_setup(), there is
no reason to save and restore it every time early_serial8250_write()
is called.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Denys Vlasenko c0f160a735 vt: Deinline save_screen, save 238 bytes 
This function compiles to 79 bytes of machine code.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Jiri Slaby <jslaby@suse.com>
CC: linux-serial@vger.kernel.org
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Denys Vlasenko 5ef6504e9d tty: Deinline __ldsem_down_write_nested, save 128 bytes 
This function compiles to 491 bytes of machine code.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Jiri Slaby <jslaby@suse.com>
CC: linux-serial@vger.kernel.org
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Denys Vlasenko fc0285f210 tty: Deinline __ldsem_down_read_nested, save 128 bytes 
This function compiles to 479 bytes of machine code.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Jiri Slaby <jslaby@suse.com>
CC: linux-serial@vger.kernel.org
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Denys Vlasenko eba3b47b26 serial/vt8500_serial: Deinline wait_for_xmitr, save 165 bytes 
This function compiles to 141 bytes of machine code.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Jiri Slaby <jslaby@suse.com>
CC: linux-serial@vger.kernel.org
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Denys Vlasenko 0d5547ca1b serial/sunsu: Deinline wait_for_xmitr, save 165 bytes 
This function compiles to 141 bytes of machine code.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Jiri Slaby <jslaby@suse.com>
CC: linux-serial@vger.kernel.org
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Denys Vlasenko 63744a6902 serial/sprd_serial: Deinline wait_for_xmitr, save 165 bytes 
This function compiles to 141 bytes of machine code.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Jiri Slaby <jslaby@suse.com>
CC: linux-serial@vger.kernel.org
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Denys Vlasenko be9ae5d9f7 serial/pxa: Deinline wait_for_xmitr, save 165 bytes 
This function compiles to 141 bytes of machine code.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Jiri Slaby <jslaby@suse.com>
CC: linux-serial@vger.kernel.org
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Denys Vlasenko 2172076d23 serial/omap-serial: Deinline wait_for_xmitr, save 165 bytes 
This function compiles to 141 bytes of machine code.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Jiri Slaby <jslaby@suse.com>
CC: linux-serial@vger.kernel.org
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Denys Vlasenko fed76af0c7 serial/men_z135_uart: Deinline men_z135_reg_clr, save 176 bytes 
This function compiles to 98 bytes of machine code.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CC: Peter Hurley <peter@hurleysoftware.com>
CC: Jiri Slaby <jslaby@suse.com>
CC: linux-serial@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Denys Vlasenko 9cdb933274 serial/m32r_sio: Deinline wait_for_xmitr, save 165 bytes 
This function compiles to 141 bytes of machine code.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Jiri Slaby <jslaby@suse.com>
CC: linux-serial@vger.kernel.org
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Denys Vlasenko 9428d712d1 isicom: Deinline drop_dtr, save 112 bytes 
This function compiles to 181 bytes of machine code.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Jiri Slaby <jslaby@suse.com>
CC: linux-serial@vger.kernel.org
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Denys Vlasenko 1c82363eef cyclades: Deinline cyz_is_loaded, save 240 bytes 
This function compiles to 58 bytes of machine code.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Jiri Slaby <jslaby@suse.com>
CC: linux-serial@vger.kernel.org
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Denys Vlasenko cb128f69ca tty/tty_ldisc: Deinline tty_ldisc_put, save 368 bytes 
This function compiles to 72 bytes of machine code.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Jiri Slaby <jslaby@suse.com>
CC: linux-serial@vger.kernel.org
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Denys Vlasenko f4581cab8d serial_core: Deinline uart_update_mctrl, save 304 bytes 
This function compiles to 92 bytes of machine code.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Jiri Slaby <jslaby@suse.com>
CC: linux-serial@vger.kernel.org
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Denys Vlasenko 6d70f46ba0 serial/jsm: Deinline neo_parse_isr, save 688 bytes 
This function compiles to 811 bytes of machine code.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Jiri Slaby <jslaby@suse.com>
CC: linux-serial@vger.kernel.org
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00
Denys Vlasenko 1a5b34ebeb serial/bcm63xx_uart: Deinline wait_for_xmitr, save 374 bytes 
This function compiles to 141 bytes of machine code.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Jiri Slaby <jslaby@suse.com>
CC: linux-serial@vger.kernel.org
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-12-13 19:59:48 -08:00