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linux/drivers/tty/Kconfig

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tty: Added a CONFIG_TTY option to allow removal of TTY The option allows you to remove TTY and compile without errors. This saves space on systems that won't support TTY interfaces anyway. bloat-o-meter output is below. The bulk of this patch consists of Kconfig changes adding "depends on TTY" to various serial devices and similar drivers that require the TTY layer. Ideally, these dependencies would occur on a common intermediate symbol such as SERIO, but most drivers "select SERIO" rather than "depends on SERIO", and "select" does not respect dependencies. bloat-o-meter output comparing our previous minimal to new minimal by removing TTY. The list is filtered to not show removed entries with awk '$3 != "-"' as the list was very long. add/remove: 0/226 grow/shrink: 2/14 up/down: 6/-35356 (-35350) function old new delta chr_dev_init 166 170 +4 allow_signal 80 82 +2 static.__warned 143 142 -1 disallow_signal 63 62 -1 __set_special_pids 95 94 -1 unregister_console 126 121 -5 start_kernel 546 541 -5 register_console 593 588 -5 copy_from_user 45 40 -5 sys_setsid 128 120 -8 sys_vhangup 32 19 -13 do_exit 1543 1526 -17 bitmap_zero 60 40 -20 arch_local_irq_save 137 117 -20 release_task 674 652 -22 static.spin_unlock_irqrestore 308 260 -48 Signed-off-by: Joe Millenbach <jmillenbach@gmail.com> Reviewed-by: Jamey Sharp <jamey@minilop.net> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 22:44:22 -08:00
tty: move Kconfig entries into drivers/tty from drivers/char The Kconfig options for the drivers/tty/ files still were hanging around in the "big" drivers/char/Kconfig file, so move them to the proper location under drivers/tty and drivers/tty/hvc/ Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 15:41:47 -08:00
um: switch to use of drivers/Kconfig Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2011-08-18 20:11:59 +01:00
tty: move Kconfig entries into drivers/tty from drivers/char The Kconfig options for the drivers/tty/ files still were hanging around in the "big" drivers/char/Kconfig file, so move them to the proper location under drivers/tty and drivers/tty/hvc/ Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 15:41:47 -08:00
PM / VT: Cleanup #if defined uglyness and fix compile error Introduce the config option CONFIG_VT_CONSOLE_SLEEP in order to cleanup the #if defined ugliness for the vt suspend support functions. Note that CONFIG_VT_CONSOLE is already dependant on CONFIG_VT. The function pm_set_vt_switch is actually dependant on CONFIG_VT and not CONFIG_PM_SLEEP. This fixes a compile error when CONFIG_PM_SLEEP is not set: drivers/tty/vt/vt_ioctl.c:1794: error: redefinition of 'pm_set_vt_switch' include/linux/suspend.h:17: error: previous definition of 'pm_set_vt_switch' was here Also, remove the incorrect path from the comment in console.c. [rjw: Replaced #if defined() with #ifdef in suspend.h.] Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2011-09-21 22:47:55 +02:00
tty: move Kconfig entries into drivers/tty from drivers/char The Kconfig options for the drivers/tty/ files still were hanging around in the "big" drivers/char/Kconfig file, so move them to the proper location under drivers/tty and drivers/tty/hvc/ Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 15:41:47 -08:00
tty: drop superfluous dependency in Kconfig HW_CONSOLE doesn't need to depend on both VT and !S390 as VT already depends on !S390. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-10-12 14:40:02 +02:00
tty: move Kconfig entries into drivers/tty from drivers/char The Kconfig options for the drivers/tty/ files still were hanging around in the "big" drivers/char/Kconfig file, so move them to the proper location under drivers/tty and drivers/tty/hvc/ Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 15:41:47 -08:00
tty: move a number of tty drivers from drivers/char/ to drivers/tty/ As planned by Arnd Bergmann, this moves the following drivers from drivers/char/ to drivers/tty/ as that's where they really belong: amiserial nozomi synclink rocket cyclades moxa mxser isicom bfin_jtag_comm Cc: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 16:14:56 -08:00
tty/serial: remove CONFIG_EXPERIMENTAL dependencies As discussed at the kernel summit this year, CONFIG_EXPERIMENTAL means nothing, so let's get rid of it. Cc: Kees Cook <keescook@chromium.org> Cc: Alan Cox <alan@linux.intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-18 16:19:27 +01:00
tty: move a number of tty drivers from drivers/char/ to drivers/tty/ As planned by Arnd Bergmann, this moves the following drivers from drivers/char/ to drivers/tty/ as that's where they really belong: amiserial nozomi synclink rocket cyclades moxa mxser isicom bfin_jtag_comm Cc: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 16:14:56 -08:00
tty/serial: remove CONFIG_EXPERIMENTAL dependencies As discussed at the kernel summit this year, CONFIG_EXPERIMENTAL means nothing, so let's get rid of it. Cc: Kees Cook <keescook@chromium.org> Cc: Alan Cox <alan@linux.intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-18 16:19:27 +01:00
tty: move a number of tty drivers from drivers/char/ to drivers/tty/ As planned by Arnd Bergmann, this moves the following drivers from drivers/char/ to drivers/tty/ as that's where they really belong: amiserial nozomi synclink rocket cyclades moxa mxser isicom bfin_jtag_comm Cc: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 16:14:56 -08:00
tty/serial: remove CONFIG_EXPERIMENTAL dependencies As discussed at the kernel summit this year, CONFIG_EXPERIMENTAL means nothing, so let's get rid of it. Cc: Kees Cook <keescook@chromium.org> Cc: Alan Cox <alan@linux.intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-18 16:19:27 +01:00
tty: move a number of tty drivers from drivers/char/ to drivers/tty/ As planned by Arnd Bergmann, this moves the following drivers from drivers/char/ to drivers/tty/ as that's where they really belong: amiserial nozomi synclink rocket cyclades moxa mxser isicom bfin_jtag_comm Cc: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 16:14:56 -08:00
tty/serial: put (EXPERIMENTAL) marking back on N_GSM and SERIAL_IFX6X60 Alan says these are not production ready, and users should be told this, so put the "(EXPERIMENTAL)" marking back in the Kconfig entry string. Reported-by: Alan Cox <alan@linux.intel.com> Cc: Kees Cook <keescook@chromium.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-18 17:17:56 +01:00
tty: move a number of tty drivers from drivers/char/ to drivers/tty/ As planned by Arnd Bergmann, this moves the following drivers from drivers/char/ to drivers/tty/ as that's where they really belong: amiserial nozomi synclink rocket cyclades moxa mxser isicom bfin_jtag_comm Cc: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 16:14:56 -08:00
tty: move Kconfig entries into drivers/tty from drivers/char The Kconfig options for the drivers/tty/ files still were hanging around in the "big" drivers/char/Kconfig file, so move them to the proper location under drivers/tty and drivers/tty/hvc/ Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 15:41:47 -08:00
n_tracerouter and n_tracesink ldisc additions. The n_tracerouter and n_tracesink line discpline drivers use the Linux tty line discpline framework to route trace data coming from a tty port (say UART for example) to the trace sink line discipline driver and to another tty port(say USB). Those these two line discipline drivers can be used together, independently from pti.c, they are part of the original implementation solution of the MIPI P1149.7, compact JTAG, PTI solution for Intel mobile platforms starting with the Medfield platform. Signed-off-by: J Freyensee <james_p_freyensee@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-06 16:56:50 -07:00
tty/powerpc: introduce the ePAPR embedded hypervisor byte channel driver The ePAPR embedded hypervisor specification provides an API for "byte channels", which are serial-like virtual devices for sending and receiving streams of bytes. This driver provides Linux kernel support for byte channels via three distinct interfaces: 1) An early-console (udbg) driver. This provides early console output through a byte channel. The byte channel handle must be specified in a Kconfig option. 2) A normal console driver. Output is sent to the byte channel designated for stdout in the device tree. The console driver is for handling kernel printk calls. 3) A tty driver, which is used to handle user-space input and output. The byte channel used for the console is designated as the default tty. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-08 19:06:12 -05:00
drivers/tty: ehv_bytechan fails to build as a module ehv_bytechan is marked tristate but fails to build as a module: drivers/tty/ehv_bytechan.c:363:1: error: type defaults to ‘int’ in declaration of ‘console_initcall’ [-Werror=implicit-int] It doesn't make much sense for a console driver to be built as a module, so change it to a bool. Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Scott Wood <scottwood@freescale.com>
2013-12-09 16:03:10 +11:00
tty/powerpc: introduce the ePAPR embedded hypervisor byte channel driver The ePAPR embedded hypervisor specification provides an API for "byte channels", which are serial-like virtual devices for sending and receiving streams of bytes. This driver provides Linux kernel support for byte channels via three distinct interfaces: 1) An early-console (udbg) driver. This provides early console output through a byte channel. The byte channel handle must be specified in a Kconfig option. 2) A normal console driver. Output is sent to the byte channel designated for stdout in the device tree. The console driver is for handling kernel printk calls. 3) A tty driver, which is used to handle user-space input and output. The byte channel used for the console is designated as the default tty. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-08 19:06:12 -05:00
PPC: select EPAPR_PARAVIRT for all users of epapr hcalls Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2012-07-03 05:48:54 +00:00
tty/powerpc: introduce the ePAPR embedded hypervisor byte channel driver The ePAPR embedded hypervisor specification provides an API for "byte channels", which are serial-like virtual devices for sending and receiving streams of bytes. This driver provides Linux kernel support for byte channels via three distinct interfaces: 1) An early-console (udbg) driver. This provides early console output through a byte channel. The byte channel handle must be specified in a Kconfig option. 2) A normal console driver. Output is sent to the byte channel designated for stdout in the device tree. The console driver is for handling kernel printk calls. 3) A tty driver, which is used to handle user-space input and output. The byte channel used for the console is designated as the default tty. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-08 19:06:12 -05:00
tty/powerpc: early udbg consoles can't be modules Fixes these build errors: ERROR: ".udbg_printf" [drivers/tty/ehv_bytechan.ko] undefined! ERROR: ".register_early_udbg_console" [drivers/tty/ehv_bytechan.ko] undefined! ERROR: "udbg_putc" [drivers/tty/ehv_bytechan.ko] undefined! Cc: Timur Tabi <timur@freescale.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-20 07:22:38 +11:00
tty/powerpc: introduce the ePAPR embedded hypervisor byte channel driver The ePAPR embedded hypervisor specification provides an API for "byte channels", which are serial-like virtual devices for sending and receiving streams of bytes. This driver provides Linux kernel support for byte channels via three distinct interfaces: 1) An early-console (udbg) driver. This provides early console output through a byte channel. The byte channel handle must be specified in a Kconfig option. 2) A normal console driver. Output is sent to the byte channel designated for stdout in the device tree. The console driver is for handling kernel printk calls. 3) A tty driver, which is used to handle user-space input and output. The byte channel used for the console is designated as the default tty. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-08 19:06:12 -05:00
tty: Added a CONFIG_TTY option to allow removal of TTY The option allows you to remove TTY and compile without errors. This saves space on systems that won't support TTY interfaces anyway. bloat-o-meter output is below. The bulk of this patch consists of Kconfig changes adding "depends on TTY" to various serial devices and similar drivers that require the TTY layer. Ideally, these dependencies would occur on a common intermediate symbol such as SERIO, but most drivers "select SERIO" rather than "depends on SERIO", and "select" does not respect dependencies. bloat-o-meter output comparing our previous minimal to new minimal by removing TTY. The list is filtered to not show removed entries with awk '$3 != "-"' as the list was very long. add/remove: 0/226 grow/shrink: 2/14 up/down: 6/-35356 (-35350) function old new delta chr_dev_init 166 170 +4 allow_signal 80 82 +2 static.__warned 143 142 -1 disallow_signal 63 62 -1 __set_special_pids 95 94 -1 unregister_console 126 121 -5 start_kernel 546 541 -5 register_console 593 588 -5 copy_from_user 45 40 -5 sys_setsid 128 120 -8 sys_vhangup 32 19 -13 do_exit 1543 1526 -17 bitmap_zero 60 40 -20 arch_local_irq_save 137 117 -20 release_task 674 652 -22 static.spin_unlock_irqrestore 308 260 -48 Signed-off-by: Joe Millenbach <jmillenbach@gmail.com> Reviewed-by: Jamey Sharp <jamey@minilop.net> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 22:44:22 -08:00
goldfish: tty driver This provides a console driver for the Goldfish virtual platform. The original is from Arve with changes from Jun Nakajima and Tom Keel. This has been then been ported to the current kernel and to the tty port mechanism by Alan Cox. In the process it gained proper POSIX semantics and vhangup works. The default name is not ttyS as this belongs to the 8250 driver. Instead ttyGFx is now used. In the normal usage case the first port serves as a kernel logging console and the second one carries various other data streams for the emulation. Signed-off-by: Arve Hjønnevåg <arve@google.com> [Cleaned up to handle x86] Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com> Signed-off-by: Xiaohui Xin <xiaohui.xin@intel.com> Signed-off-by: Jun Nakajima <jun.nakajima@intel.com> Signed-off-by: Bruce Beare <bruce.j.beare@intel.com> [Moved to 3.7 and chunks rewritten to use tty_port layer] Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-21 23:38:47 +00:00
tty: metag_da: Add metag DA TTY driver Add a TTY driver for communicating over a Meta DA (Debug Adapter) channel using the bios channel SWITCH operation. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Jiri Slaby <jslaby@suse.cz> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-06 14:45:01 +00:00
tty: Added a CONFIG_TTY option to allow removal of TTY The option allows you to remove TTY and compile without errors. This saves space on systems that won't support TTY interfaces anyway. bloat-o-meter output is below. The bulk of this patch consists of Kconfig changes adding "depends on TTY" to various serial devices and similar drivers that require the TTY layer. Ideally, these dependencies would occur on a common intermediate symbol such as SERIO, but most drivers "select SERIO" rather than "depends on SERIO", and "select" does not respect dependencies. bloat-o-meter output comparing our previous minimal to new minimal by removing TTY. The list is filtered to not show removed entries with awk '$3 != "-"' as the list was very long. add/remove: 0/226 grow/shrink: 2/14 up/down: 6/-35356 (-35350) function old new delta chr_dev_init 166 170 +4 allow_signal 80 82 +2 static.__warned 143 142 -1 disallow_signal 63 62 -1 __set_special_pids 95 94 -1 unregister_console 126 121 -5 start_kernel 546 541 -5 register_console 593 588 -5 copy_from_user 45 40 -5 sys_setsid 128 120 -8 sys_vhangup 32 19 -13 do_exit 1543 1526 -17 bitmap_zero 60 40 -20 arch_local_irq_save 137 117 -20 release_task 674 652 -22 static.spin_unlock_irqrestore 308 260 -48 Signed-off-by: Joe Millenbach <jmillenbach@gmail.com> Reviewed-by: Jamey Sharp <jamey@minilop.net> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 22:44:22 -08:00