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linux/arch/cris/Kconfig
Linus Torvalds f991fae5c6 Merge tag 'pm+acpi-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm 
Pull power management and ACPI updates from Rafael Wysocki:
 "This time the total number of ACPI commits is slightly greater than
  the number of cpufreq commits, but Viresh Kumar (who works on cpufreq)
  remains the most active patch submitter.

  To me, the most significant change is the addition of offline/online
  device operations to the driver core (with the Greg's blessing) and
  the related modifications of the ACPI core hotplug code.  Next are the
  freezer updates from Colin Cross that should make the freezing of
  tasks a bit less heavy weight.

  We also have a couple of regression fixes, a number of fixes for
  issues that have not been identified as regressions, two new drivers
  and a bunch of cleanups all over.

  Highlights:

   - Hotplug changes to support graceful hot-removal failures.

     It sometimes is necessary to fail device hot-removal operations
     gracefully if they cannot be carried out completely.  For example,
     if memory from a memory module being hot-removed has been allocated
     for the kernel's own use and cannot be moved elsewhere, it's
     desirable to fail the hot-removal operation in a graceful way
     rather than to crash the kernel, but currenty a success or a kernel
     crash are the only possible outcomes of an attempted memory
     hot-removal.  Needless to say, that is not a very attractive
     alternative and it had to be addressed.

     However, in order to make it work for memory, I first had to make
     it work for CPUs and for this purpose I needed to modify the ACPI
     processor driver.  It's been split into two parts, a resident one
     handling the low-level initialization/cleanup and a modular one
     playing the actual driver's role (but it binds to the CPU system
     device objects rather than to the ACPI device objects representing
     processors).  That's been sort of like a live brain surgery on a
     patient who's riding a bike.

     So this is a little scary, but since we found and fixed a couple of
     regressions it caused to happen during the early linux-next testing
     (a month ago), nobody has complained.

     As a bonus we remove some duplicated ACPI hotplug code, because the
     ACPI-based CPU hotplug is now going to use the common ACPI hotplug
     code.

   - Lighter weight freezing of tasks.

     These changes from Colin Cross and Mandeep Singh Baines are
     targeted at making the freezing of tasks a bit less heavy weight
     operation.  They reduce the number of tasks woken up every time
     during the freezing, by using the observation that the freezer
     simply doesn't need to wake up some of them and wait for them all
     to call refrigerator().  The time needed for the freezer to decide
     to report a failure is reduced too.

     Also reintroduced is the check causing a lockdep warining to
     trigger when try_to_freeze() is called with locks held (which is
     generally unsafe and shouldn't happen).

   - cpufreq updates

     First off, a commit from Srivatsa S Bhat fixes a resume regression
     introduced during the 3.10 cycle causing some cpufreq sysfs
     attributes to return wrong values to user space after resume.  The
     fix is kind of fresh, but also it's pretty obvious once Srivatsa
     has identified the root cause.

     Second, we have a new freqdomain_cpus sysfs attribute for the
     acpi-cpufreq driver to provide information previously available via
     related_cpus.  From Lan Tianyu.

     Finally, we fix a number of issues, mostly related to the
     CPUFREQ_POSTCHANGE notifier and cpufreq Kconfig options and clean
     up some code.  The majority of changes from Viresh Kumar with bits
     from Jacob Shin, Heiko Stübner, Xiaoguang Chen, Ezequiel Garcia,
     Arnd Bergmann, and Tang Yuantian.

   - ACPICA update

     A usual bunch of updates from the ACPICA upstream.

     During the 3.4 cycle we introduced support for ACPI 5 extended
     sleep registers, but they are only supposed to be used if the
     HW-reduced mode bit is set in the FADT flags and the code attempted
     to use them without checking that bit.  That caused suspend/resume
     regressions to happen on some systems.  Fix from Lv Zheng causes
     those registers to be used only if the HW-reduced mode bit is set.

     Apart from this some other ACPICA bugs are fixed and code cleanups
     are made by Bob Moore, Tomasz Nowicki, Lv Zheng, Chao Guan, and
     Zhang Rui.

   - cpuidle updates

     New driver for Xilinx Zynq processors is added by Michal Simek.

     Multidriver support simplification, addition of some missing
     kerneldoc comments and Kconfig-related fixes come from Daniel
     Lezcano.

   - ACPI power management updates

     Changes to make suspend/resume work correctly in Xen guests from
     Konrad Rzeszutek Wilk, sparse warning fix from Fengguang Wu and
     cleanups and fixes of the ACPI device power state selection
     routine.

   - ACPI documentation updates

     Some previously missing pieces of ACPI documentation are added by
     Lv Zheng and Aaron Lu (hopefully, that will help people to
     uderstand how the ACPI subsystem works) and one outdated doc is
     updated by Hanjun Guo.

   - Assorted ACPI updates

     We finally nailed down the IA-64 issue that was the reason for
     reverting commit 9f29ab11dd ("ACPI / scan: do not match drivers
     against objects having scan handlers"), so we can fix it and move
     the ACPI scan handler check added to the ACPI video driver back to
     the core.

     A mechanism for adding CMOS RTC address space handlers is
     introduced by Lan Tianyu to allow some EC-related breakage to be
     fixed on some systems.

     A spec-compliant implementation of acpi_os_get_timer() is added by
     Mika Westerberg.

     The evaluation of _STA is added to do_acpi_find_child() to avoid
     situations in which a pointer to a disabled device object is
     returned instead of an enabled one with the same _ADR value.  From
     Jeff Wu.

     Intel BayTrail PCH (Platform Controller Hub) support is added to
     the ACPI driver for Intel Low-Power Subsystems (LPSS) and that
     driver is modified to work around a couple of known BIOS issues.
     Changes from Mika Westerberg and Heikki Krogerus.

     The EC driver is fixed by Vasiliy Kulikov to use get_user() and
     put_user() instead of dereferencing user space pointers blindly.

     Code cleanups are made by Bjorn Helgaas, Nicholas Mazzuca and Toshi
     Kani.

   - Assorted power management updates

     The "runtime idle" helper routine is changed to take the return
     values of the callbacks executed by it into account and to call
     rpm_suspend() if they return 0, which allows us to reduce the
     overall code bloat a bit (by dropping some code that's not
     necessary any more after that modification).

     The runtime PM documentation is updated by Alan Stern (to reflect
     the "runtime idle" behavior change).

     New trace points for PM QoS are added by Sahara
     (<keun-o.park@windriver.com>).

     PM QoS documentation is updated by Lan Tianyu.

     Code cleanups are made and minor issues are addressed by Bernie
     Thompson, Bjorn Helgaas, Julius Werner, and Shuah Khan.

   - devfreq updates

     New driver for the Exynos5-bus device from Abhilash Kesavan.

     Minor cleanups, fixes and MAINTAINERS update from MyungJoo Ham,
     Abhilash Kesavan, Paul Bolle, Rajagopal Venkat, and Wei Yongjun.

   - OMAP power management updates

     Adaptive Voltage Scaling (AVS) SmartReflex voltage control driver
     updates from Andrii Tseglytskyi and Nishanth Menon."

* tag 'pm+acpi-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (162 commits)
  cpufreq: Fix cpufreq regression after suspend/resume
  ACPI / PM: Fix possible NULL pointer deref in acpi_pm_device_sleep_state()
  PM / Sleep: Warn about system time after resume with pm_trace
  cpufreq: don't leave stale policy pointer in cdbs->cur_policy
  acpi-cpufreq: Add new sysfs attribute freqdomain_cpus
  cpufreq: make sure frequency transitions are serialized
  ACPI: implement acpi_os_get_timer() according the spec
  ACPI / EC: Add HP Folio 13 to ec_dmi_table in order to skip DSDT scan
  ACPI: Add CMOS RTC Operation Region handler support
  ACPI / processor: Drop unused variable from processor_perflib.c
  cpufreq: tegra: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: s3c64xx: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: omap: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: imx6q: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: exynos: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: dbx500: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: davinci: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: arm-big-little: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: powernow-k8: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: pcc: call CPUFREQ_POSTCHANGE notfier in error cases
  ...
2013-07-03 14:35:40 -07:00

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config MMU
bool
default y
config ZONE_DMA
bool
default y
config RWSEM_GENERIC_SPINLOCK
bool
default y
config RWSEM_XCHGADD_ALGORITHM
bool
config ARCH_HAS_ILOG2_U32
bool
default n
config ARCH_HAS_ILOG2_U64
bool
default n
config GENERIC_HWEIGHT
bool
default y
config GENERIC_CALIBRATE_DELAY
bool
default y
config NO_IOPORT
def_bool y
config FORCE_MAX_ZONEORDER
int
default 6
config CRIS
bool
default y
select HAVE_IDE
select GENERIC_ATOMIC64
select HAVE_GENERIC_HARDIRQS
select HAVE_UID16
select VIRT_TO_BUS
select ARCH_WANT_IPC_PARSE_VERSION
select GENERIC_IRQ_SHOW
select GENERIC_IOMAP
select GENERIC_SMP_IDLE_THREAD if ETRAX_ARCH_V32
select GENERIC_CMOS_UPDATE
select MODULES_USE_ELF_RELA
select CLONE_BACKWARDS2
select OLD_SIGSUSPEND
select OLD_SIGACTION
config HZ
int
default 100
source "init/Kconfig"
source "kernel/Kconfig.freezer"
menu "General setup"
source "fs/Kconfig.binfmt"
config ETRAX_CMDLINE
string "Kernel command line"
default "root=/dev/mtdblock3"
help
Pass additional commands to the kernel.
config ETRAX_WATCHDOG
bool "Enable ETRAX watchdog"
help
Enable the built-in watchdog timer support on ETRAX based embedded
network computers.
config ETRAX_WATCHDOG_NICE_DOGGY
bool "Disable watchdog during Oops printouts"
depends on ETRAX_WATCHDOG
help
By enabling this you make sure that the watchdog does not bite while
printing oopses. Recommended for development systems but not for
production releases.
config ETRAX_FAST_TIMER
bool "Enable ETRAX fast timer API"
help
This options enables the API to a fast timer implementation using
timer1 to get sub jiffie resolution timers (primarily one-shot
timers).
This is needed if CONFIG_ETRAX_SERIAL_FAST_TIMER is enabled.
config ETRAX_KMALLOCED_MODULES
bool "Enable module allocation with kmalloc"
help
Enable module allocation with kmalloc instead of vmalloc.
config OOM_REBOOT
bool "Enable reboot at out of memory"
source "kernel/Kconfig.preempt"
source mm/Kconfig
endmenu
menu "Hardware setup"
choice
prompt "Processor type"
default ETRAX100LX
config ETRAX100LX
bool "ETRAX-100LX-v1"
select ARCH_USES_GETTIMEOFFSET
help
Support version 1 of the ETRAX 100LX.
config ETRAX100LX_V2
bool "ETRAX-100LX-v2"
select ARCH_USES_GETTIMEOFFSET
help
Support version 2 of the ETRAX 100LX.
config SVINTO_SIM
bool "ETRAX-100LX-for-xsim-simulator"
select ARCH_USES_GETTIMEOFFSET
help
Support the xsim ETRAX Simulator.
config ETRAXFS
bool "ETRAX-FS-V32"
select CPU_FREQ_TABLE if CPU_FREQ
help
Support CRIS V32.
config CRIS_MACH_ARTPEC3
bool "ARTPEC-3"
select CPU_FREQ_TABLE if CPU_FREQ
help
Support Axis ARTPEC-3.
endchoice
config ETRAX_ARCH_V10
bool
default y if ETRAX100LX || ETRAX100LX_V2
default n if !(ETRAX100LX || ETRAX100LX_V2)
config ETRAX_ARCH_V32
bool
default y if (ETRAXFS || CRIS_MACH_ARTPEC3)
default n if !(ETRAXFS || CRIS_MACH_ARTPEC3)
config ETRAX_DRAM_SIZE
int "DRAM size (dec, in MB)"
default "8"
help
Size of DRAM (decimal in MB) typically 2, 8 or 16.
config ETRAX_VMEM_SIZE
int "Video memory size (dec, in MB)"
depends on ETRAX_ARCH_V32 && !ETRAXFS
default 8 if !ETRAXFS
help
Size of Video accessible memory (decimal, in MB).
config ETRAX_FLASH_BUSWIDTH
int "Buswidth of NOR flash in bytes"
default "2"
help
Width in bytes of the NOR Flash bus (1, 2 or 4). Is usually 2.
config ETRAX_NANDFLASH_BUSWIDTH
int "Buswidth of NAND flash in bytes"
default "1"
help
Width in bytes of the NAND flash (1 or 2).
config ETRAX_FLASH1_SIZE
int "FLASH1 size (dec, in MB. 0 = Unknown)"
default "0"
choice
prompt "Product debug-port"
default ETRAX_DEBUG_PORT0
config ETRAX_DEBUG_PORT0
bool "Serial-0"
help
Choose a serial port for the ETRAX debug console. Default to
port 0.
config ETRAX_DEBUG_PORT1
bool "Serial-1"
help
Use serial port 1 for the console.
config ETRAX_DEBUG_PORT2
bool "Serial-2"
help
Use serial port 2 for the console.
config ETRAX_DEBUG_PORT3
bool "Serial-3"
help
Use serial port 3 for the console.
config ETRAX_DEBUG_PORT_NULL
bool "disabled"
help
Disable serial-port debugging.
endchoice
choice
prompt "Kernel GDB port"
depends on ETRAX_KGDB
default ETRAX_KGDB_PORT0
help
Choose a serial port for kernel debugging. NOTE: This port should
not be enabled under Drivers for built-in interfaces (as it has its
own initialization code) and should not be the same as the debug port.
config ETRAX_KGDB_PORT0
bool "Serial-0"
help
Use serial port 0 for kernel debugging.
config ETRAX_KGDB_PORT1
bool "Serial-1"
help
Use serial port 1 for kernel debugging.
config ETRAX_KGDB_PORT2
bool "Serial-2"
help
Use serial port 2 for kernel debugging.
config ETRAX_KGDB_PORT3
bool "Serial-3"
help
Use serial port 3 for kernel debugging.
endchoice
source arch/cris/arch-v10/Kconfig
source arch/cris/arch-v32/Kconfig
endmenu
source "net/Kconfig"
# bring in ETRAX built-in drivers
menu "Drivers for built-in interfaces"
source arch/cris/arch-v10/drivers/Kconfig
source arch/cris/arch-v32/drivers/Kconfig
config ETRAX_AXISFLASHMAP
bool "Axis flash-map support"
select MTD
select MTD_CFI
select MTD_CFI_AMDSTD
select MTD_JEDECPROBE if ETRAX_ARCH_V32
select MTD_BLOCK
select MTD_COMPLEX_MAPPINGS
help
This option enables MTD mapping of flash devices. Needed to use
flash memories. If unsure, say Y.
config ETRAX_RTC
bool "Real Time Clock support"
depends on ETRAX_I2C
help
Enables drivers for the Real-Time Clock battery-backed chips on
some products. The kernel reads the time when booting, and
the date can be set using ioctl(fd, RTC_SET_TIME, &rt) with rt a
rtc_time struct (see <file:arch/cris/include/asm/rtc.h>) on the
/dev/rtc device. You can check the time with cat /proc/rtc, but
normal time reading should be done using libc function time and
friends.
choice
prompt "RTC chip"
depends on ETRAX_RTC
default ETRAX_DS1302
config ETRAX_DS1302
depends on ETRAX_ARCH_V10
bool "DS1302"
help
Enables the driver for the DS1302 Real-Time Clock battery-backed
chip on some products.
config ETRAX_PCF8563
bool "PCF8563"
help
Enables the driver for the PCF8563 Real-Time Clock battery-backed
chip on some products.
endchoice
config ETRAX_SYNCHRONOUS_SERIAL
bool "Synchronous serial-port support"
help
Select this to enable the synchronous serial port driver.
config ETRAX_SYNCHRONOUS_SERIAL_PORT0
bool "Synchronous serial port 0 enabled"
depends on ETRAX_SYNCHRONOUS_SERIAL
help
Enabled synchronous serial port 0.
config ETRAX_SYNCHRONOUS_SERIAL0_DMA
bool "Enable DMA on synchronous serial port 0."
depends on ETRAX_SYNCHRONOUS_SERIAL_PORT0
help
A synchronous serial port can run in manual or DMA mode.
Selecting this option will make it run in DMA mode.
config ETRAX_SYNCHRONOUS_SERIAL_PORT1
bool "Synchronous serial port 1 enabled"
depends on ETRAX_SYNCHRONOUS_SERIAL && (ETRAXFS || ETRAX_ARCH_V10)
help
Enabled synchronous serial port 1.
config ETRAX_SYNCHRONOUS_SERIAL1_DMA
bool "Enable DMA on synchronous serial port 1."
depends on ETRAX_SYNCHRONOUS_SERIAL_PORT1
help
A synchronous serial port can run in manual or DMA mode.
Selecting this option will make it run in DMA mode.
choice
prompt "Network LED behavior"
depends on ETRAX_ETHERNET
default ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY
config ETRAX_NETWORK_LED_ON_WHEN_LINK
bool "LED_on_when_link"
help
Selecting LED_on_when_link will light the LED when there is a
connection and will flash off when there is activity.
Selecting LED_on_when_activity will light the LED only when
there is activity.
This setting will also affect the behaviour of other activity LEDs
e.g. Bluetooth.
config ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY
bool "LED_on_when_activity"
help
Selecting LED_on_when_link will light the LED when there is a
connection and will flash off when there is activity.
Selecting LED_on_when_activity will light the LED only when
there is activity.
This setting will also affect the behaviour of other activity LEDs
e.g. Bluetooth.
endchoice
choice
prompt "Ser0 DMA out channel"
depends on ETRAX_SERIAL_PORT0
default ETRAX_SERIAL_PORT0_DMA6_OUT if ETRAX_ARCH_V32
default ETRAX_SERIAL_PORT0_NO_DMA_OUT if ETRAX_ARCH_V10
config ETRAX_SERIAL_PORT0_NO_DMA_OUT
bool "Ser0 uses no DMA for output"
help
Do not use DMA for ser0 output.
config ETRAX_SERIAL_PORT0_DMA6_OUT
bool "Ser0 uses DMA6 for output"
depends on ETRAXFS
help
Enables the DMA6 output channel for ser0 (ttyS0).
If you do not enable DMA, an interrupt for each character will be
used when transmitting data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
config ETRAX_SERIAL_PORT0_DMA0_OUT
bool "Ser0 uses DMA0 for output"
depends on CRIS_MACH_ARTPEC3
help
Enables the DMA0 output channel for ser0 (ttyS0).
If you do not enable DMA, an interrupt for each character will be
used when transmitting data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
endchoice
choice
prompt "Ser0 DMA in channel "
depends on ETRAX_SERIAL_PORT0
default ETRAX_SERIAL_PORT0_NO_DMA_IN if ETRAX_ARCH_V32
default ETRAX_SERIAL_PORT0_DMA7_IN if ETRAX_ARCH_V10
help
What DMA channel to use for ser0.
config ETRAX_SERIAL_PORT0_NO_DMA_IN
bool "Ser0 uses no DMA for input"
help
Do not use DMA for ser0 input.
config ETRAX_SERIAL_PORT0_DMA7_IN
bool "Ser0 uses DMA7 for input"
depends on ETRAXFS
help
Enables the DMA7 input channel for ser0 (ttyS0).
If you do not enable DMA, an interrupt for each character will be
used when receiving data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
config ETRAX_SERIAL_PORT0_DMA1_IN
bool "Ser0 uses DMA1 for input"
depends on CRIS_MACH_ARTPEC3
help
Enables the DMA1 input channel for ser0 (ttyS0).
If you do not enable DMA, an interrupt for each character will be
used when receiving data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
endchoice
choice
prompt "Ser1 DMA in channel "
depends on ETRAX_SERIAL_PORT1
default ETRAX_SERIAL_PORT1_NO_DMA_IN if ETRAX_ARCH_V32
default ETRAX_SERIAL_PORT1_DMA9_IN if ETRAX_ARCH_V10
help
What DMA channel to use for ser1.
config ETRAX_SERIAL_PORT1_NO_DMA_IN
bool "Ser1 uses no DMA for input"
help
Do not use DMA for ser1 input.
config ETRAX_SERIAL_PORT1_DMA5_IN
bool "Ser1 uses DMA5 for input"
depends on ETRAX_ARCH_V32
help
Enables the DMA5 input channel for ser1 (ttyS1).
If you do not enable DMA, an interrupt for each character will be
used when receiving data.
Normally you want this on, unless you use the DMA channel for
something else.
config ETRAX_SERIAL_PORT1_DMA9_IN
depends on ETRAX_ARCH_V10
bool "Ser1 uses DMA9 for input"
endchoice
choice
prompt "Ser1 DMA out channel"
depends on ETRAX_SERIAL_PORT1
default ETRAX_SERIAL_PORT1_NO_DMA_OUT if ETRAX_ARCH_V32
default ETRAX_SERIAL_PORT1_DMA8_OUT if ETRAX_ARCH_V10
help
What DMA channel to use for ser1.
config ETRAX_SERIAL_PORT1_NO_DMA_OUT
bool "Ser1 uses no DMA for output"
help
Do not use DMA for ser1 output.
config ETRAX_SERIAL_PORT1_DMA8_OUT
depends on ETRAX_ARCH_V10
bool "Ser1 uses DMA8 for output"
config ETRAX_SERIAL_PORT1_DMA4_OUT
depends on ETRAX_ARCH_V32
bool "Ser1 uses DMA4 for output"
help
Enables the DMA4 output channel for ser1 (ttyS1).
If you do not enable DMA, an interrupt for each character will be
used when transmitting data.
Normally you want this on, unless you use the DMA channel for
something else.
endchoice
choice
prompt "Ser2 DMA out channel"
depends on ETRAX_SERIAL_PORT2
default ETRAX_SERIAL_PORT2_NO_DMA_OUT if ETRAX_ARCH_V32
default ETRAX_SERIAL_PORT2_DMA2_OUT if ETRAX_ARCH_V10
config ETRAX_SERIAL_PORT2_NO_DMA_OUT
bool "Ser2 uses no DMA for output"
help
Do not use DMA for ser2 output.
config ETRAX_SERIAL_PORT2_DMA2_OUT
bool "Ser2 uses DMA2 for output"
depends on ETRAXFS || ETRAX_ARCH_V10
help
Enables the DMA2 output channel for ser2 (ttyS2).
If you do not enable DMA, an interrupt for each character will be
used when transmitting data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
config ETRAX_SERIAL_PORT2_DMA6_OUT
bool "Ser2 uses DMA6 for output"
depends on CRIS_MACH_ARTPEC3
help
Enables the DMA6 output channel for ser2 (ttyS2).
If you do not enable DMA, an interrupt for each character will be
used when transmitting data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
endchoice
choice
prompt "Ser2 DMA in channel"
depends on ETRAX_SERIAL_PORT2
default ETRAX_SERIAL_PORT2_NO_DMA_IN if ETRAX_ARCH_V32
default ETRAX_SERIAL_PORT2_DMA3_IN if ETRAX_ARCH_V10
help
What DMA channel to use for ser2.
config ETRAX_SERIAL_PORT2_NO_DMA_IN
bool "Ser2 uses no DMA for input"
help
Do not use DMA for ser2 input.
config ETRAX_SERIAL_PORT2_DMA3_IN
bool "Ser2 uses DMA3 for input"
depends on ETRAXFS || ETRAX_ARCH_V10
help
Enables the DMA3 input channel for ser2 (ttyS2).
If you do not enable DMA, an interrupt for each character will be
used when receiving data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
config ETRAX_SERIAL_PORT2_DMA7_IN
bool "Ser2 uses DMA7 for input"
depends on CRIS_MACH_ARTPEC3
help
Enables the DMA7 input channel for ser2 (ttyS2).
If you do not enable DMA, an interrupt for each character will be
used when receiving data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
endchoice
choice
prompt "Ser3 DMA in channel"
depends on ETRAX_SERIAL_PORT3
default ETRAX_SERIAL_PORT3_NO_DMA_IN if ETRAX_ARCH_V32
default ETRAX_SERIAL_PORT3_DMA5_IN if ETRAX_ARCH_V10
help
What DMA channel to use for ser3.
config ETRAX_SERIAL_PORT3_NO_DMA_IN
bool "Ser3 uses no DMA for input"
help
Do not use DMA for ser3 input.
config ETRAX_SERIAL_PORT3_DMA5_IN
depends on ETRAX_ARCH_V10
bool "DMA 5"
config ETRAX_SERIAL_PORT3_DMA9_IN
bool "Ser3 uses DMA9 for input"
depends on ETRAXFS
help
Enables the DMA9 input channel for ser3 (ttyS3).
If you do not enable DMA, an interrupt for each character will be
used when receiving data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
config ETRAX_SERIAL_PORT3_DMA3_IN
bool "Ser3 uses DMA3 for input"
depends on CRIS_MACH_ARTPEC3
help
Enables the DMA3 input channel for ser3 (ttyS3).
If you do not enable DMA, an interrupt for each character will be
used when receiving data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
endchoice
choice
prompt "Ser3 DMA out channel"
depends on ETRAX_SERIAL_PORT3
default ETRAX_SERIAL_PORT3_NO_DMA_OUT if ETRAX_ARCH_V32
default ETRAX_SERIAL_PORT3_DMA4_OUT if ETRAX_ARCH_V10
config ETRAX_SERIAL_PORT3_NO_DMA_OUT
bool "Ser3 uses no DMA for output"
help
Do not use DMA for ser3 output.
config ETRAX_SERIAL_PORT3_DMA4_OUT
depends on ETRAX_ARCH_V10
bool "DMA 4"
config ETRAX_SERIAL_PORT3_DMA8_OUT
bool "Ser3 uses DMA8 for output"
depends on ETRAXFS
help
Enables the DMA8 output channel for ser3 (ttyS3).
If you do not enable DMA, an interrupt for each character will be
used when transmitting data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
config ETRAX_SERIAL_PORT3_DMA2_OUT
bool "Ser3 uses DMA2 for output"
depends on CRIS_MACH_ARTPEC3
help
Enables the DMA2 output channel for ser3 (ttyS3).
If you do not enable DMA, an interrupt for each character will be
used when transmitting data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
endchoice
endmenu
source "drivers/Kconfig"
source "fs/Kconfig"
source "arch/cris/Kconfig.debug"
source "security/Kconfig"
source "crypto/Kconfig"
source "lib/Kconfig"
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