M: Greg Kroah-Hartman <gregkh@suse.de>
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6.git
-F: drivers/tty/*
+F: drivers/tty/
F: drivers/tty/serial/serial_core.c
F: include/linux/serial_core.h
F: include/linux/serial.h
--- /dev/null
+#
+# The 8250/16550 serial drivers. You shouldn't be in this list unless
+# you somehow have an implicit or explicit dependency on SERIAL_8250.
+#
+
+config SERIAL_8250
+ tristate "8250/16550 and compatible serial support"
+ select SERIAL_CORE
+ ---help---
+ This selects whether you want to include the driver for the standard
+ serial ports. The standard answer is Y. People who might say N
+ here are those that are setting up dedicated Ethernet WWW/FTP
+ servers, or users that have one of the various bus mice instead of a
+ serial mouse and don't intend to use their machine's standard serial
+ port for anything. (Note that the Cyclades and Stallion multi
+ serial port drivers do not need this driver built in for them to
+ work.)
+
+ To compile this driver as a module, choose M here: the
+ module will be called 8250.
+ [WARNING: Do not compile this driver as a module if you are using
+ non-standard serial ports, since the configuration information will
+ be lost when the driver is unloaded. This limitation may be lifted
+ in the future.]
+
+ BTW1: If you have a mouseman serial mouse which is not recognized by
+ the X window system, try running gpm first.
+
+ BTW2: If you intend to use a software modem (also called Winmodem)
+ under Linux, forget it. These modems are crippled and require
+ proprietary drivers which are only available under Windows.
+
+ Most people will say Y or M here, so that they can use serial mice,
+ modems and similar devices connecting to the standard serial ports.
+
+config SERIAL_8250_CONSOLE
+ bool "Console on 8250/16550 and compatible serial port"
+ depends on SERIAL_8250=y
+ select SERIAL_CORE_CONSOLE
+ ---help---
+ If you say Y here, it will be possible to use a serial port as the
+ system console (the system console is the device which receives all
+ kernel messages and warnings and which allows logins in single user
+ mode). This could be useful if some terminal or printer is connected
+ to that serial port.
+
+ Even if you say Y here, the currently visible virtual console
+ (/dev/tty0) will still be used as the system console by default, but
+ you can alter that using a kernel command line option such as
+ "console=ttyS1". (Try "man bootparam" or see the documentation of
+ your boot loader (grub or lilo or loadlin) about how to pass options
+ to the kernel at boot time.)
+
+ If you don't have a VGA card installed and you say Y here, the
+ kernel will automatically use the first serial line, /dev/ttyS0, as
+ system console.
+
+ You can set that using a kernel command line option such as
+ "console=uart8250,io,0x3f8,9600n8"
+ "console=uart8250,mmio,0xff5e0000,115200n8".
+ and it will switch to normal serial console when the corresponding
+ port is ready.
+ "earlycon=uart8250,io,0x3f8,9600n8"
+ "earlycon=uart8250,mmio,0xff5e0000,115200n8".
+ it will not only setup early console.
+
+ If unsure, say N.
+
+config FIX_EARLYCON_MEM
+ bool
+ depends on X86
+ default y
+
+config SERIAL_8250_GSC
+ tristate
+ depends on SERIAL_8250 && GSC
+ default SERIAL_8250
+
+config SERIAL_8250_PCI
+ tristate "8250/16550 PCI device support" if EXPERT
+ depends on SERIAL_8250 && PCI
+ default SERIAL_8250
+ help
+ This builds standard PCI serial support. You may be able to
+ disable this feature if you only need legacy serial support.
+ Saves about 9K.
+
+config SERIAL_8250_PNP
+ tristate "8250/16550 PNP device support" if EXPERT
+ depends on SERIAL_8250 && PNP
+ default SERIAL_8250
+ help
+ This builds standard PNP serial support. You may be able to
+ disable this feature if you only need legacy serial support.
+
+config SERIAL_8250_HP300
+ tristate
+ depends on SERIAL_8250 && HP300
+ default SERIAL_8250
+
+config SERIAL_8250_CS
+ tristate "8250/16550 PCMCIA device support"
+ depends on PCMCIA && SERIAL_8250
+ ---help---
+ Say Y here to enable support for 16-bit PCMCIA serial devices,
+ including serial port cards, modems, and the modem functions of
+ multi-function Ethernet/modem cards. (PCMCIA- or PC-cards are
+ credit-card size devices often used with laptops.)
+
+ To compile this driver as a module, choose M here: the
+ module will be called serial_cs.
+
+ If unsure, say N.
+
+config SERIAL_8250_NR_UARTS
+ int "Maximum number of 8250/16550 serial ports"
+ depends on SERIAL_8250
+ default "4"
+ help
+ Set this to the number of serial ports you want the driver
+ to support. This includes any ports discovered via ACPI or
+ PCI enumeration and any ports that may be added at run-time
+ via hot-plug, or any ISA multi-port serial cards.
+
+config SERIAL_8250_RUNTIME_UARTS
+ int "Number of 8250/16550 serial ports to register at runtime"
+ depends on SERIAL_8250
+ range 0 SERIAL_8250_NR_UARTS
+ default "4"
+ help
+ Set this to the maximum number of serial ports you want
+ the kernel to register at boot time. This can be overridden
+ with the module parameter "nr_uarts", or boot-time parameter
+ 8250.nr_uarts
+
+config SERIAL_8250_EXTENDED
+ bool "Extended 8250/16550 serial driver options"
+ depends on SERIAL_8250
+ help
+ If you wish to use any non-standard features of the standard "dumb"
+ driver, say Y here. This includes HUB6 support, shared serial
+ interrupts, special multiport support, support for more than the
+ four COM 1/2/3/4 boards, etc.
+
+ Note that the answer to this question won't directly affect the
+ kernel: saying N will just cause the configurator to skip all
+ the questions about serial driver options. If unsure, say N.
+
+config SERIAL_8250_MANY_PORTS
+ bool "Support more than 4 legacy serial ports"
+ depends on SERIAL_8250_EXTENDED && !IA64
+ help
+ Say Y here if you have dumb serial boards other than the four
+ standard COM 1/2/3/4 ports. This may happen if you have an AST
+ FourPort, Accent Async, Boca (read the Boca mini-HOWTO, available
+ from <http://www.tldp.org/docs.html#howto>), or other custom
+ serial port hardware which acts similar to standard serial port
+ hardware. If you only use the standard COM 1/2/3/4 ports, you can
+ say N here to save some memory. You can also say Y if you have an
+ "intelligent" multiport card such as Cyclades, Digiboards, etc.
+
+#
+# Multi-port serial cards
+#
+
+config SERIAL_8250_FOURPORT
+ tristate "Support Fourport cards"
+ depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
+ help
+ Say Y here if you have an AST FourPort serial board.
+
+ To compile this driver as a module, choose M here: the module
+ will be called 8250_fourport.
+
+config SERIAL_8250_ACCENT
+ tristate "Support Accent cards"
+ depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
+ help
+ Say Y here if you have an Accent Async serial board.
+
+ To compile this driver as a module, choose M here: the module
+ will be called 8250_accent.
+
+config SERIAL_8250_BOCA
+ tristate "Support Boca cards"
+ depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
+ help
+ Say Y here if you have a Boca serial board. Please read the Boca
+ mini-HOWTO, available from <http://www.tldp.org/docs.html#howto>
+
+ To compile this driver as a module, choose M here: the module
+ will be called 8250_boca.
+
+config SERIAL_8250_EXAR_ST16C554
+ tristate "Support Exar ST16C554/554D Quad UART"
+ depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
+ help
+ The Uplogix Envoy TU301 uses this Exar Quad UART. If you are
+ tinkering with your Envoy TU301, or have a machine with this UART,
+ say Y here.
+
+ To compile this driver as a module, choose M here: the module
+ will be called 8250_exar_st16c554.
+
+config SERIAL_8250_HUB6
+ tristate "Support Hub6 cards"
+ depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
+ help
+ Say Y here if you have a HUB6 serial board.
+
+ To compile this driver as a module, choose M here: the module
+ will be called 8250_hub6.
+
+#
+# Misc. options/drivers.
+#
+
+config SERIAL_8250_SHARE_IRQ
+ bool "Support for sharing serial interrupts"
+ depends on SERIAL_8250_EXTENDED
+ help
+ Some serial boards have hardware support which allows multiple dumb
+ serial ports on the same board to share a single IRQ. To enable
+ support for this in the serial driver, say Y here.
+
+config SERIAL_8250_DETECT_IRQ
+ bool "Autodetect IRQ on standard ports (unsafe)"
+ depends on SERIAL_8250_EXTENDED
+ help
+ Say Y here if you want the kernel to try to guess which IRQ
+ to use for your serial port.
+
+ This is considered unsafe; it is far better to configure the IRQ in
+ a boot script using the setserial command.
+
+ If unsure, say N.
+
+config SERIAL_8250_RSA
+ bool "Support RSA serial ports"
+ depends on SERIAL_8250_EXTENDED
+ help
+ ::: To be written :::
+
+config SERIAL_8250_MCA
+ tristate "Support 8250-type ports on MCA buses"
+ depends on SERIAL_8250 != n && MCA
+ help
+ Say Y here if you have a MCA serial ports.
+
+ To compile this driver as a module, choose M here: the module
+ will be called 8250_mca.
+
+config SERIAL_8250_ACORN
+ tristate "Acorn expansion card serial port support"
+ depends on ARCH_ACORN && SERIAL_8250
+ help
+ If you have an Atomwide Serial card or Serial Port card for an Acorn
+ system, say Y to this option. The driver can handle 1, 2, or 3 port
+ cards. If unsure, say N.
+
+config SERIAL_8250_RM9K
+ bool "Support for MIPS RM9xxx integrated serial port"
+ depends on SERIAL_8250 != n && SERIAL_RM9000
+ select SERIAL_8250_SHARE_IRQ
+ help
+ Selecting this option will add support for the integrated serial
+ port hardware found on MIPS RM9122 and similar processors.
+ If unsure, say N.
+
+config SERIAL_8250_FSL
+ bool
+ depends on SERIAL_8250_CONSOLE && PPC_UDBG_16550
+ default PPC
+
+config SERIAL_8250_DW
+ tristate "Support for Synopsys DesignWare 8250 quirks"
+ depends on SERIAL_8250 && OF
+ help
+ Selecting this option will enable handling of the extra features
+ present in the Synopsys DesignWare APB UART.
--- /dev/null
+#
+# Makefile for the 8250 serial device drivers.
+#
+
+obj-$(CONFIG_SERIAL_8250) += 8250.o
+obj-$(CONFIG_SERIAL_8250_PNP) += 8250_pnp.o
+obj-$(CONFIG_SERIAL_8250_GSC) += 8250_gsc.o
+obj-$(CONFIG_SERIAL_8250_PCI) += 8250_pci.o
+obj-$(CONFIG_SERIAL_8250_HP300) += 8250_hp300.o
+obj-$(CONFIG_SERIAL_8250_CS) += serial_cs.o
+obj-$(CONFIG_SERIAL_8250_ACORN) += 8250_acorn.o
+obj-$(CONFIG_SERIAL_8250_CONSOLE) += 8250_early.o
+obj-$(CONFIG_SERIAL_8250_FOURPORT) += 8250_fourport.o
+obj-$(CONFIG_SERIAL_8250_ACCENT) += 8250_accent.o
+obj-$(CONFIG_SERIAL_8250_BOCA) += 8250_boca.o
+obj-$(CONFIG_SERIAL_8250_EXAR_ST16C554) += 8250_exar_st16c554.o
+obj-$(CONFIG_SERIAL_8250_HUB6) += 8250_hub6.o
+obj-$(CONFIG_SERIAL_8250_MCA) += 8250_mca.o
+obj-$(CONFIG_SERIAL_8250_FSL) += 8250_fsl.o
+obj-$(CONFIG_SERIAL_8250_DW) += 8250_dw.o
menu "Serial drivers"
depends on HAS_IOMEM
-#
-# The new 8250/16550 serial drivers
-config SERIAL_8250
- tristate "8250/16550 and compatible serial support"
- select SERIAL_CORE
- ---help---
- This selects whether you want to include the driver for the standard
- serial ports. The standard answer is Y. People who might say N
- here are those that are setting up dedicated Ethernet WWW/FTP
- servers, or users that have one of the various bus mice instead of a
- serial mouse and don't intend to use their machine's standard serial
- port for anything. (Note that the Cyclades and Stallion multi
- serial port drivers do not need this driver built in for them to
- work.)
-
- To compile this driver as a module, choose M here: the
- module will be called 8250.
- [WARNING: Do not compile this driver as a module if you are using
- non-standard serial ports, since the configuration information will
- be lost when the driver is unloaded. This limitation may be lifted
- in the future.]
-
- BTW1: If you have a mouseman serial mouse which is not recognized by
- the X window system, try running gpm first.
-
- BTW2: If you intend to use a software modem (also called Winmodem)
- under Linux, forget it. These modems are crippled and require
- proprietary drivers which are only available under Windows.
-
- Most people will say Y or M here, so that they can use serial mice,
- modems and similar devices connecting to the standard serial ports.
-
-config SERIAL_8250_CONSOLE
- bool "Console on 8250/16550 and compatible serial port"
- depends on SERIAL_8250=y
- select SERIAL_CORE_CONSOLE
- ---help---
- If you say Y here, it will be possible to use a serial port as the
- system console (the system console is the device which receives all
- kernel messages and warnings and which allows logins in single user
- mode). This could be useful if some terminal or printer is connected
- to that serial port.
-
- Even if you say Y here, the currently visible virtual console
- (/dev/tty0) will still be used as the system console by default, but
- you can alter that using a kernel command line option such as
- "console=ttyS1". (Try "man bootparam" or see the documentation of
- your boot loader (grub or lilo or loadlin) about how to pass options
- to the kernel at boot time.)
-
- If you don't have a VGA card installed and you say Y here, the
- kernel will automatically use the first serial line, /dev/ttyS0, as
- system console.
-
- You can set that using a kernel command line option such as
- "console=uart8250,io,0x3f8,9600n8"
- "console=uart8250,mmio,0xff5e0000,115200n8".
- and it will switch to normal serial console when the corresponding
- port is ready.
- "earlycon=uart8250,io,0x3f8,9600n8"
- "earlycon=uart8250,mmio,0xff5e0000,115200n8".
- it will not only setup early console.
-
- If unsure, say N.
-
-config FIX_EARLYCON_MEM
- bool
- depends on X86
- default y
-
-config SERIAL_8250_GSC
- tristate
- depends on SERIAL_8250 && GSC
- default SERIAL_8250
-
-config SERIAL_8250_PCI
- tristate "8250/16550 PCI device support" if EXPERT
- depends on SERIAL_8250 && PCI
- default SERIAL_8250
- help
- This builds standard PCI serial support. You may be able to
- disable this feature if you only need legacy serial support.
- Saves about 9K.
-
-config SERIAL_8250_PNP
- tristate "8250/16550 PNP device support" if EXPERT
- depends on SERIAL_8250 && PNP
- default SERIAL_8250
- help
- This builds standard PNP serial support. You may be able to
- disable this feature if you only need legacy serial support.
-
-config SERIAL_8250_FSL
- bool
- depends on SERIAL_8250_CONSOLE && PPC_UDBG_16550
- default PPC
-
-config SERIAL_8250_HP300
- tristate
- depends on SERIAL_8250 && HP300
- default SERIAL_8250
-
-config SERIAL_8250_CS
- tristate "8250/16550 PCMCIA device support"
- depends on PCMCIA && SERIAL_8250
- ---help---
- Say Y here to enable support for 16-bit PCMCIA serial devices,
- including serial port cards, modems, and the modem functions of
- multi-function Ethernet/modem cards. (PCMCIA- or PC-cards are
- credit-card size devices often used with laptops.)
-
- To compile this driver as a module, choose M here: the
- module will be called serial_cs.
-
- If unsure, say N.
-
-config SERIAL_8250_NR_UARTS
- int "Maximum number of 8250/16550 serial ports"
- depends on SERIAL_8250
- default "4"
- help
- Set this to the number of serial ports you want the driver
- to support. This includes any ports discovered via ACPI or
- PCI enumeration and any ports that may be added at run-time
- via hot-plug, or any ISA multi-port serial cards.
-
-config SERIAL_8250_RUNTIME_UARTS
- int "Number of 8250/16550 serial ports to register at runtime"
- depends on SERIAL_8250
- range 0 SERIAL_8250_NR_UARTS
- default "4"
- help
- Set this to the maximum number of serial ports you want
- the kernel to register at boot time. This can be overridden
- with the module parameter "nr_uarts", or boot-time parameter
- 8250.nr_uarts
-
-config SERIAL_8250_EXTENDED
- bool "Extended 8250/16550 serial driver options"
- depends on SERIAL_8250
- help
- If you wish to use any non-standard features of the standard "dumb"
- driver, say Y here. This includes HUB6 support, shared serial
- interrupts, special multiport support, support for more than the
- four COM 1/2/3/4 boards, etc.
-
- Note that the answer to this question won't directly affect the
- kernel: saying N will just cause the configurator to skip all
- the questions about serial driver options. If unsure, say N.
-
-config SERIAL_8250_MANY_PORTS
- bool "Support more than 4 legacy serial ports"
- depends on SERIAL_8250_EXTENDED && !IA64
- help
- Say Y here if you have dumb serial boards other than the four
- standard COM 1/2/3/4 ports. This may happen if you have an AST
- FourPort, Accent Async, Boca (read the Boca mini-HOWTO, available
- from <http://www.tldp.org/docs.html#howto>), or other custom
- serial port hardware which acts similar to standard serial port
- hardware. If you only use the standard COM 1/2/3/4 ports, you can
- say N here to save some memory. You can also say Y if you have an
- "intelligent" multiport card such as Cyclades, Digiboards, etc.
-
-#
-# Multi-port serial cards
-#
-
-config SERIAL_8250_FOURPORT
- tristate "Support Fourport cards"
- depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
- help
- Say Y here if you have an AST FourPort serial board.
-
- To compile this driver as a module, choose M here: the module
- will be called 8250_fourport.
-
-config SERIAL_8250_ACCENT
- tristate "Support Accent cards"
- depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
- help
- Say Y here if you have an Accent Async serial board.
-
- To compile this driver as a module, choose M here: the module
- will be called 8250_accent.
-
-config SERIAL_8250_BOCA
- tristate "Support Boca cards"
- depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
- help
- Say Y here if you have a Boca serial board. Please read the Boca
- mini-HOWTO, available from <http://www.tldp.org/docs.html#howto>
-
- To compile this driver as a module, choose M here: the module
- will be called 8250_boca.
-
-config SERIAL_8250_EXAR_ST16C554
- tristate "Support Exar ST16C554/554D Quad UART"
- depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
- help
- The Uplogix Envoy TU301 uses this Exar Quad UART. If you are
- tinkering with your Envoy TU301, or have a machine with this UART,
- say Y here.
-
- To compile this driver as a module, choose M here: the module
- will be called 8250_exar_st16c554.
-
-config SERIAL_8250_HUB6
- tristate "Support Hub6 cards"
- depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
- help
- Say Y here if you have a HUB6 serial board.
-
- To compile this driver as a module, choose M here: the module
- will be called 8250_hub6.
-
-config SERIAL_8250_SHARE_IRQ
- bool "Support for sharing serial interrupts"
- depends on SERIAL_8250_EXTENDED
- help
- Some serial boards have hardware support which allows multiple dumb
- serial ports on the same board to share a single IRQ. To enable
- support for this in the serial driver, say Y here.
-
-config SERIAL_8250_DETECT_IRQ
- bool "Autodetect IRQ on standard ports (unsafe)"
- depends on SERIAL_8250_EXTENDED
- help
- Say Y here if you want the kernel to try to guess which IRQ
- to use for your serial port.
-
- This is considered unsafe; it is far better to configure the IRQ in
- a boot script using the setserial command.
-
- If unsure, say N.
-
-config SERIAL_8250_RSA
- bool "Support RSA serial ports"
- depends on SERIAL_8250_EXTENDED
- help
- ::: To be written :::
-
-config SERIAL_8250_MCA
- tristate "Support 8250-type ports on MCA buses"
- depends on SERIAL_8250 != n && MCA
- help
- Say Y here if you have a MCA serial ports.
-
- To compile this driver as a module, choose M here: the module
- will be called 8250_mca.
-
-config SERIAL_8250_ACORN
- tristate "Acorn expansion card serial port support"
- depends on ARCH_ACORN && SERIAL_8250
- help
- If you have an Atomwide Serial card or Serial Port card for an Acorn
- system, say Y to this option. The driver can handle 1, 2, or 3 port
- cards. If unsure, say N.
-
-config SERIAL_8250_RM9K
- bool "Support for MIPS RM9xxx integrated serial port"
- depends on SERIAL_8250 != n && SERIAL_RM9000
- select SERIAL_8250_SHARE_IRQ
- help
- Selecting this option will add support for the integrated serial
- port hardware found on MIPS RM9122 and similar processors.
- If unsure, say N.
-
-config SERIAL_8250_DW
- tristate "Support for Synopsys DesignWare 8250 quirks"
- depends on SERIAL_8250 && OF
- help
- Selecting this option will enable handling of the extra features
- present in the Synopsys DesignWare APB UART.
+source "drivers/tty/serial/8250/Kconfig"
comment "Non-8250 serial port support"
help
MAX3107 chip support
-config SERIAL_MAX3107_AAVA
- tristate "MAX3107 AAVA platform support"
- depends on X86_MRST && SERIAL_MAX3107 && GPIOLIB
- select SERIAL_CORE
- help
- Support for the MAX3107 chip configuration found on the AAVA
- platform. Includes the extra initialisation and GPIO support
- neded for this device.
-
config SERIAL_DZ
bool "DECstation DZ serial driver"
depends on MACH_DECSTATION && 32BIT
obj-$(CONFIG_SERIAL_SUNSU) += sunsu.o
obj-$(CONFIG_SERIAL_SUNSAB) += sunsab.o
-obj-$(CONFIG_SERIAL_8250) += 8250.o
-obj-$(CONFIG_SERIAL_8250_PNP) += 8250_pnp.o
-obj-$(CONFIG_SERIAL_8250_GSC) += 8250_gsc.o
-obj-$(CONFIG_SERIAL_8250_PCI) += 8250_pci.o
-obj-$(CONFIG_SERIAL_8250_HP300) += 8250_hp300.o
-obj-$(CONFIG_SERIAL_8250_CS) += serial_cs.o
-obj-$(CONFIG_SERIAL_8250_ACORN) += 8250_acorn.o
-obj-$(CONFIG_SERIAL_8250_CONSOLE) += 8250_early.o
-obj-$(CONFIG_SERIAL_8250_FOURPORT) += 8250_fourport.o
-obj-$(CONFIG_SERIAL_8250_ACCENT) += 8250_accent.o
-obj-$(CONFIG_SERIAL_8250_BOCA) += 8250_boca.o
-obj-$(CONFIG_SERIAL_8250_EXAR_ST16C554) += 8250_exar_st16c554.o
-obj-$(CONFIG_SERIAL_8250_HUB6) += 8250_hub6.o
-obj-$(CONFIG_SERIAL_8250_MCA) += 8250_mca.o
-obj-$(CONFIG_SERIAL_8250_FSL) += 8250_fsl.o
-obj-$(CONFIG_SERIAL_8250_DW) += 8250_dw.o
+# Now bring in any enabled 8250/16450/16550 type drivers.
+obj-$(CONFIG_SERIAL_8250) += 8250/
+
obj-$(CONFIG_SERIAL_AMBA_PL010) += amba-pl010.o
obj-$(CONFIG_SERIAL_AMBA_PL011) += amba-pl011.o
obj-$(CONFIG_SERIAL_CLPS711X) += clps711x.o
obj-$(CONFIG_SERIAL_SAMSUNG) += samsung.o
obj-$(CONFIG_SERIAL_MAX3100) += max3100.o
obj-$(CONFIG_SERIAL_MAX3107) += max3107.o
-obj-$(CONFIG_SERIAL_MAX3107_AAVA) += max3107-aava.o
obj-$(CONFIG_SERIAL_IP22_ZILOG) += ip22zilog.o
obj-$(CONFIG_SERIAL_MUX) += mux.o
obj-$(CONFIG_SERIAL_68328) += 68328serial.o
unsigned int fifosize; /* vendor-specific */
unsigned int lcrh_tx; /* vendor-specific */
unsigned int lcrh_rx; /* vendor-specific */
+ unsigned int old_cr; /* state during shutdown */
bool autorts;
char type[12];
bool interrupt_may_hang; /* vendor-specific */
while (readw(uap->port.membase + UART01x_FR) & UART01x_FR_BUSY)
barrier();
- cr = UART01x_CR_UARTEN | UART011_CR_RXE | UART011_CR_TXE;
+ /* restore RTS and DTR */
+ cr = uap->old_cr & (UART011_CR_RTS | UART011_CR_DTR);
+ cr |= UART01x_CR_UARTEN | UART011_CR_RXE | UART011_CR_TXE;
writew(cr, uap->port.membase + UART011_CR);
/* Clear pending error interrupts */
static void pl011_shutdown(struct uart_port *port)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
+ unsigned int cr;
/*
* disable all interrupts
/*
* disable the port
+ * disable the port. It should not disable RTS and DTR.
+ * Also RTS and DTR state should be preserved to restore
+ * it during startup().
*/
uap->autorts = false;
- writew(UART01x_CR_UARTEN | UART011_CR_TXE, uap->port.membase + UART011_CR);
+ cr = readw(uap->port.membase + UART011_CR);
+ uap->old_cr = cr;
+ cr &= UART011_CR_RTS | UART011_CR_DTR;
+ cr |= UART01x_CR_UARTEN | UART011_CR_TXE;
+ writew(cr, uap->port.membase + UART011_CR);
/*
* disable break condition and fifos
{
struct uart_amba_port *uap = amba_ports[co->index];
unsigned int status, old_cr, new_cr;
+ unsigned long flags;
+ int locked = 1;
clk_enable(uap->clk);
+ local_irq_save(flags);
+ if (uap->port.sysrq)
+ locked = 0;
+ else if (oops_in_progress)
+ locked = spin_trylock(&uap->port.lock);
+ else
+ spin_lock(&uap->port.lock);
+
/*
* First save the CR then disable the interrupts
*/
} while (status & UART01x_FR_BUSY);
writew(old_cr, uap->port.membase + UART011_CR);
+ if (locked)
+ spin_unlock(&uap->port.lock);
+ local_irq_restore(flags);
+
clk_disable(uap->clk);
}
uap->vendor = vendor;
uap->lcrh_rx = vendor->lcrh_rx;
uap->lcrh_tx = vendor->lcrh_tx;
+ uap->old_cr = 0;
uap->fifosize = vendor->fifosize;
uap->interrupt_may_hang = vendor->interrupt_may_hang;
uap->port.dev = &dev->dev;
struct jsm_board *brd = pci_get_drvdata(pdev);
pci_restore_state(pdev);
+ pci_save_state(pdev);
jsm_uart_port_init(brd);
}
+++ /dev/null
-/*
- * max3107.c - spi uart protocol driver for Maxim 3107
- * Based on max3100.c
- * by Christian Pellegrin <chripell@evolware.org>
- * and max3110.c
- * by Feng Tang <feng.tang@intel.com>
- *
- * Copyright (C) Aavamobile 2009
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- */
-
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/serial_core.h>
-#include <linux/serial.h>
-#include <linux/spi/spi.h>
-#include <linux/freezer.h>
-#include <linux/platform_device.h>
-#include <linux/gpio.h>
-#include <linux/sfi.h>
-#include <linux/module.h>
-#include <asm/mrst.h>
-#include "max3107.h"
-
-/* GPIO direction to input function */
-static int max3107_gpio_direction_in(struct gpio_chip *chip, unsigned offset)
-{
- struct max3107_port *s = container_of(chip, struct max3107_port, chip);
- u16 buf[1]; /* Buffer for SPI transfer */
-
- if (offset >= MAX3107_GPIO_COUNT) {
- dev_err(&s->spi->dev, "Invalid GPIO\n");
- return -EINVAL;
- }
-
- /* Read current GPIO configuration register */
- buf[0] = MAX3107_GPIOCFG_REG;
- /* Perform SPI transfer */
- if (max3107_rw(s, (u8 *)buf, (u8 *)buf, 2)) {
- dev_err(&s->spi->dev, "SPI transfer GPIO read failed\n");
- return -EIO;
- }
- buf[0] &= MAX3107_SPI_RX_DATA_MASK;
-
- /* Set GPIO to input */
- buf[0] &= ~(0x0001 << offset);
-
- /* Write new GPIO configuration register value */
- buf[0] |= (MAX3107_WRITE_BIT | MAX3107_GPIOCFG_REG);
- /* Perform SPI transfer */
- if (max3107_rw(s, (u8 *)buf, NULL, 2)) {
- dev_err(&s->spi->dev, "SPI transfer GPIO write failed\n");
- return -EIO;
- }
- return 0;
-}
-
-/* GPIO direction to output function */
-static int max3107_gpio_direction_out(struct gpio_chip *chip, unsigned offset,
- int value)
-{
- struct max3107_port *s = container_of(chip, struct max3107_port, chip);
- u16 buf[2]; /* Buffer for SPI transfers */
-
- if (offset >= MAX3107_GPIO_COUNT) {
- dev_err(&s->spi->dev, "Invalid GPIO\n");
- return -EINVAL;
- }
-
- /* Read current GPIO configuration and data registers */
- buf[0] = MAX3107_GPIOCFG_REG;
- buf[1] = MAX3107_GPIODATA_REG;
- /* Perform SPI transfer */
- if (max3107_rw(s, (u8 *)buf, (u8 *)buf, 4)) {
- dev_err(&s->spi->dev, "SPI transfer gpio failed\n");
- return -EIO;
- }
- buf[0] &= MAX3107_SPI_RX_DATA_MASK;
- buf[1] &= MAX3107_SPI_RX_DATA_MASK;
-
- /* Set GPIO to output */
- buf[0] |= (0x0001 << offset);
- /* Set value */
- if (value)
- buf[1] |= (0x0001 << offset);
- else
- buf[1] &= ~(0x0001 << offset);
-
- /* Write new GPIO configuration and data register values */
- buf[0] |= (MAX3107_WRITE_BIT | MAX3107_GPIOCFG_REG);
- buf[1] |= (MAX3107_WRITE_BIT | MAX3107_GPIODATA_REG);
- /* Perform SPI transfer */
- if (max3107_rw(s, (u8 *)buf, NULL, 4)) {
- dev_err(&s->spi->dev,
- "SPI transfer for GPIO conf data w failed\n");
- return -EIO;
- }
- return 0;
-}
-
-/* GPIO value query function */
-static int max3107_gpio_get(struct gpio_chip *chip, unsigned offset)
-{
- struct max3107_port *s = container_of(chip, struct max3107_port, chip);
- u16 buf[1]; /* Buffer for SPI transfer */
-
- if (offset >= MAX3107_GPIO_COUNT) {
- dev_err(&s->spi->dev, "Invalid GPIO\n");
- return -EINVAL;
- }
-
- /* Read current GPIO data register */
- buf[0] = MAX3107_GPIODATA_REG;
- /* Perform SPI transfer */
- if (max3107_rw(s, (u8 *)buf, (u8 *)buf, 2)) {
- dev_err(&s->spi->dev, "SPI transfer GPIO data r failed\n");
- return -EIO;
- }
- buf[0] &= MAX3107_SPI_RX_DATA_MASK;
-
- /* Return value */
- return buf[0] & (0x0001 << offset);
-}
-
-/* GPIO value set function */
-static void max3107_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
-{
- struct max3107_port *s = container_of(chip, struct max3107_port, chip);
- u16 buf[2]; /* Buffer for SPI transfers */
-
- if (offset >= MAX3107_GPIO_COUNT) {
- dev_err(&s->spi->dev, "Invalid GPIO\n");
- return;
- }
-
- /* Read current GPIO configuration registers*/
- buf[0] = MAX3107_GPIODATA_REG;
- buf[1] = MAX3107_GPIOCFG_REG;
- /* Perform SPI transfer */
- if (max3107_rw(s, (u8 *)buf, (u8 *)buf, 4)) {
- dev_err(&s->spi->dev,
- "SPI transfer for GPIO data and config read failed\n");
- return;
- }
- buf[0] &= MAX3107_SPI_RX_DATA_MASK;
- buf[1] &= MAX3107_SPI_RX_DATA_MASK;
-
- if (!(buf[1] & (0x0001 << offset))) {
- /* Configured as input, can't set value */
- dev_warn(&s->spi->dev,
- "Trying to set value for input GPIO\n");
- return;
- }
-
- /* Set value */
- if (value)
- buf[0] |= (0x0001 << offset);
- else
- buf[0] &= ~(0x0001 << offset);
-
- /* Write new GPIO data register value */
- buf[0] |= (MAX3107_WRITE_BIT | MAX3107_GPIODATA_REG);
- /* Perform SPI transfer */
- if (max3107_rw(s, (u8 *)buf, NULL, 2))
- dev_err(&s->spi->dev, "SPI transfer GPIO data w failed\n");
-}
-
-/* GPIO chip data */
-static struct gpio_chip max3107_gpio_chip = {
- .owner = THIS_MODULE,
- .direction_input = max3107_gpio_direction_in,
- .direction_output = max3107_gpio_direction_out,
- .get = max3107_gpio_get,
- .set = max3107_gpio_set,
- .can_sleep = 1,
- .base = MAX3107_GPIO_BASE,
- .ngpio = MAX3107_GPIO_COUNT,
-};
-
-/**
- * max3107_aava_reset - reset on AAVA systems
- * @spi: The SPI device we are probing
- *
- * Reset the device ready for probing.
- */
-
-static int max3107_aava_reset(struct spi_device *spi)
-{
- /* Reset the chip */
- if (gpio_request(MAX3107_RESET_GPIO, "max3107")) {
- pr_err("Requesting RESET GPIO failed\n");
- return -EIO;
- }
- if (gpio_direction_output(MAX3107_RESET_GPIO, 0)) {
- pr_err("Setting RESET GPIO to 0 failed\n");
- gpio_free(MAX3107_RESET_GPIO);
- return -EIO;
- }
- msleep(MAX3107_RESET_DELAY);
- if (gpio_direction_output(MAX3107_RESET_GPIO, 1)) {
- pr_err("Setting RESET GPIO to 1 failed\n");
- gpio_free(MAX3107_RESET_GPIO);
- return -EIO;
- }
- gpio_free(MAX3107_RESET_GPIO);
- msleep(MAX3107_WAKEUP_DELAY);
- return 0;
-}
-
-static int max3107_aava_configure(struct max3107_port *s)
-{
- int retval;
-
- /* Initialize GPIO chip data */
- s->chip = max3107_gpio_chip;
- s->chip.label = s->spi->modalias;
- s->chip.dev = &s->spi->dev;
-
- /* Add GPIO chip */
- retval = gpiochip_add(&s->chip);
- if (retval) {
- dev_err(&s->spi->dev, "Adding GPIO chip failed\n");
- return retval;
- }
-
- /* Temporary fix for EV2 boot problems, set modem reset to 0 */
- max3107_gpio_direction_out(&s->chip, 3, 0);
- return 0;
-}
-
-#if 0
-/* This will get enabled once we have the board stuff merged for this
- specific case */
-
-static const struct baud_table brg13_ext[] = {
- { 300, MAX3107_BRG13_B300 },
- { 600, MAX3107_BRG13_B600 },
- { 1200, MAX3107_BRG13_B1200 },
- { 2400, MAX3107_BRG13_B2400 },
- { 4800, MAX3107_BRG13_B4800 },
- { 9600, MAX3107_BRG13_B9600 },
- { 19200, MAX3107_BRG13_B19200 },
- { 57600, MAX3107_BRG13_B57600 },
- { 115200, MAX3107_BRG13_B115200 },
- { 230400, MAX3107_BRG13_B230400 },
- { 460800, MAX3107_BRG13_B460800 },
- { 921600, MAX3107_BRG13_B921600 },
- { 0, 0 }
-};
-
-static void max3107_aava_init(struct max3107_port *s)
-{
- /*override for AAVA SC specific*/
- if (mrst_platform_id() == MRST_PLATFORM_AAVA_SC) {
- if (get_koski_build_id() <= KOSKI_EV2)
- if (s->ext_clk) {
- s->brg_cfg = MAX3107_BRG13_B9600;
- s->baud_tbl = (struct baud_table *)brg13_ext;
- }
- }
-}
-#endif
-
-static int __devexit max3107_aava_remove(struct spi_device *spi)
-{
- struct max3107_port *s = dev_get_drvdata(&spi->dev);
-
- /* Remove GPIO chip */
- if (gpiochip_remove(&s->chip))
- dev_warn(&spi->dev, "Removing GPIO chip failed\n");
-
- /* Then do the default remove */
- return max3107_remove(spi);
-}
-
-/* Platform data */
-static struct max3107_plat aava_plat_data = {
- .loopback = 0,
- .ext_clk = 1,
-/* .init = max3107_aava_init, */
- .configure = max3107_aava_configure,
- .hw_suspend = max3107_hw_susp,
- .polled_mode = 0,
- .poll_time = 0,
-};
-
-
-static int __devinit max3107_probe_aava(struct spi_device *spi)
-{
- int err = max3107_aava_reset(spi);
- if (err < 0)
- return err;
- return max3107_probe(spi, &aava_plat_data);
-}
-
-/* Spi driver data */
-static struct spi_driver max3107_driver = {
- .driver = {
- .name = "aava-max3107",
- .owner = THIS_MODULE,
- },
- .probe = max3107_probe_aava,
- .remove = __devexit_p(max3107_aava_remove),
- .suspend = max3107_suspend,
- .resume = max3107_resume,
-};
-
-/* Driver init function */
-static int __init max3107_init(void)
-{
- return spi_register_driver(&max3107_driver);
-}
-
-/* Driver exit function */
-static void __exit max3107_exit(void)
-{
- spi_unregister_driver(&max3107_driver);
-}
-
-module_init(max3107_init);
-module_exit(max3107_exit);
-
-MODULE_DESCRIPTION("MAX3107 driver");
-MODULE_AUTHOR("Aavamobile");
-MODULE_ALIAS("spi:aava-max3107");
-MODULE_LICENSE("GPL v2");
.cons = OMAP_CONSOLE,
};
-#ifdef CONFIG_SUSPEND
+#ifdef CONFIG_PM_SLEEP
static int serial_omap_suspend(struct device *dev)
{
struct uart_omap_port *up = dev_get_drvdata(dev);
}
}
+#ifdef CONFIG_PM_RUNTIME
static void serial_omap_restore_context(struct uart_omap_port *up)
{
if (up->errata & UART_ERRATA_i202_MDR1_ACCESS)
serial_out(up, UART_OMAP_MDR1, up->mdr1);
}
-#ifdef CONFIG_PM_RUNTIME
static int serial_omap_runtime_suspend(struct device *dev)
{
struct uart_omap_port *up = dev_get_drvdata(dev);
*/
tty_dev = tty_register_device(drv->tty_driver, uport->line, uport->dev);
if (likely(!IS_ERR(tty_dev))) {
- device_init_wakeup(tty_dev, 1);
- device_set_wakeup_enable(tty_dev, 0);
- } else
+ device_set_wakeup_capable(tty_dev, 1);
+ } else {
printk(KERN_ERR "Cannot register tty device on line %d\n",
uport->line);
+ }
/*
* Ensure UPF_DEAD is not set.
int do_clocal = 0, retval;
unsigned long flags;
DEFINE_WAIT(wait);
- int cd;
/* block if port is in the process of being closed */
if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) {
retval = -ERESTARTSYS;
break;
}
- /* Probe the carrier. For devices with no carrier detect this
- will always return true */
- cd = tty_port_carrier_raised(port);
+ /*
+ * Probe the carrier. For devices with no carrier detect
+ * tty_port_carrier_raised will always return true.
+ * Never ask drivers if CLOCAL is set, this causes troubles
+ * on some hardware.
+ */
if (!(port->flags & ASYNC_CLOSING) &&
- (do_clocal || cd))
+ (do_clocal || tty_port_carrier_raised(port)))
break;
if (signal_pending(current)) {
retval = -ERESTARTSYS;
projects / linux-beck.git / commitdiff