* 'uart' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: remove some orphan function declarations.
ARM: OMAP2+: UART: remove unused fields in omap_uart_state.
* 'cleanup-pm' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: PM: share some suspend-related functions across OMAP2, 3, 4
ARM: OMAP2+: omap_device: call all suspend, resume callbacks when OMAP_DEVICE_NO_IDLE_ON_SUSPEND is set
ARM: OMAP: omap_device: remove omap_device_parent
ARM: OMAP2+: PM debug: fix the use of debugfs_create_* API
ARM: OMAP2+: PM: share clkdms_setup() across OMAP2, 3, 4
ARM: OMAP2+: PM: clean up omap_set_pwrdm_state()
ARM: OMAP3: PM: remove superfluous calls to pwrdm_clear_all_prev_pwrst()
ARM: OMAP: convert omap_device_build() and callers to __init
ARM: OMAP2+: Mark omap_hsmmc_init and omap_mux related functions as __init
ARM: OMAP2+: Split omap2_hsmmc_init() to properly support I2C GPIO pins
ARM: OMAP: omap_device: Expose omap_device_{alloc, delete, register}
ARM: OMAP: Fix build error when mmc_omap is built as module
ARM: OMAP: Fix kernel panic with HSMMC when twl4030_gpio is a module
* 'next/cleanup-use-static' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: SAMSUNG: use static declaration when it is not used in other files
ARM: S5PV210: use static declaration when it is not used in other files
ARM: S5PC100: use static declaration when it is not used in other files
ARM: S5P64X0: use static declaration when it is not used in other files
ARM: S3C64XX: use static declaration when it is not used in other files
ARM: S3C24XX: use static declaration when it is not used in other files
ARM: EXYNOS: use static declaration when it is not used in other files
Commit 9890ce44 (ARM: get rid of asm/irq.h in asm/prom.h)
removed include of asm/irq.h in asm/prom.h. This commit
together with recent omap cleanup to remove io.h causes
build breakage:
arrch/arm/mach-omap2/control.c: In function 'omap3_ctrl_write_boot_mode':
arch/arm/mach-omap2/control.c:238: error:
'OMAP343X_CTRL_BASE' undeclared (first use in this function)
...
Fix this by including hardware.h directly where needed
instead of relying on asm/irq.h in asm/prom.h.
Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>
As the clocks can calculate their rate themself now, there is no
need to set it statically.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Currently the rate of clk_p is calculated once and set through the
s3c24xx_setup_clocks call. As the clk_p is a child of clk_h we can
evaluate its divider and calculate the rate in get_rate.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Currently the rate of clk_h is calculated once and set through the
s3c24xx_setup_clocks call. As the clk_h is a child of the prediv
we can evaluate its divider and calculate the rate in get_rate.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
s3c2443_common_setup_clocks is always called through
s3c2443_common_init_clocks, so there is no need to call it separately.
It was also called twice through this separate call.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
The S3C2416 now reuses the dma selection of the S3C2443.
Therefore it is not necessary to keep the S3C2416_DMA option around.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
The dma controller is similar in S3C2443 and S3C2416 and has also
the same register layout with the same REQSEL-bits in the source
select.
The only small difference is the SIO channel of the S3C2443 for the
non-hsmmc controller which is not present on S3C2416/2450 and
second spi channel which is not present on the S3C2416.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Spaces seem to have slipped in at some point in the past.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Includes a small rename of the SETUP_TS option to a S3C24XX prefix.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
The Simtec extension didn't follow a specific naming scheme for files
and config options until now. This distributed the files throughout
the whole mach-s3c24xx directory.
This patch fixes the naming of files and option names and also creates
a simtec.h header instead of using many one-liners.
As the plat/audio-simtec.h only contains the platform-data struct now,
it can also move to include/sound in a later patch.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This includes a rename of the pm-simtec.c to keep the simtec
extensions together a bit and also better naming of the Kconfig
options.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This code is used by boards based on the S3C2410/S3C2440/S3C2416.
The patch includes also a rename of the option, as the smdk code
is not a mach itself, but only an extension with common code.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
The platform_suspend_ops can be shared across OMAP2, 3, and 4, along
with all of the functions referenced in that structure. This patch
shares them. It also removes the suspend_state file-scoped variable
in the OMAP2 and 3 PM code; it does not appear to be actually needed
by anything.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
[khilman@ti.com: minor rework needed due to rebase/merge with conflicting changes]
Signed-off-by: Kevin Hilman <khilman@ti.com>
During system suspend, when OMAP_DEVICE_NO_IDLE_ON_SUSPEND is set on
an omap_device, call the corresponding driver's ->suspend() and
->suspend_noirq() callbacks (if present). Similarly, during resume,
the driver's ->resume() and ->resume_noirq() callbacks must both be
called, if present. (The previous code only called ->suspend_noirq()
and ->resume_noirq().)
If all of these callbacks aren't called, some important driver
suspend/resume code may not get executed.
In current mainline, the bug fixed by this patch is only a problem
under the following conditions:
- the kernel is running on an OMAP4
- an OMAP UART is used as a console
- the kernel command line parameter 'no_console_suspend' is specified
- and the system enters suspend ("echo mem > /sys/power/state").
Under this combined circumstance, the system cannot be awakened via
the serial port after commit be4b028195
("tty: serial: OMAP: block idle while the UART is transferring data in
PIO mode"). This is because the OMAP UART driver's ->suspend()
callback is never called. The ->suspend() callback would have called
uart_suspend_port() which in turn would call enable_irq_wake(). Since
enable_irq_wake() isn't called for the UART's IRQ, check_wakeup_irqs()
would mask off the UART IRQ in the GIC.
On v3.3 kernels prior to the above commit, serial resume from suspend
presumably occurred via the PRCM interrupt. The UART was in
smart-idle mode, so it was able to send a PRCM wakeup which in turn
would be converted into a PRCM interrupt to the GIC, waking up the
kernel. But after the above commit, when the system is suspended in
the middle of a UART transmit, the UART IP block would be in no-idle
mode. In no-idle mode, the UART won't generate wakeups to the PRCM
when incoming characters are received; only GIC interrupts. But since
the UART driver's ->suspend() callback is never called,
uart_suspend_port() and enable_irq_wake() is never called; so the UART
interrupt is masked by check_wakeup_irqs() and the UART can't wake up
the MPU.
The remaining mechanism that could have awakened the system would have
been I/O chain wakeups. These wouldn't be active because the console
UART's clocks are never disabled when no_console_suspend is used,
preventing the full chip from idling. Also, current mainline doesn't
yet support full chip idle states for OMAP4, so I/O chain wakeups are
not enabled.
This patch is the result of a collaboration. John Stultz
<johnstul@us.ibm.com> and Andy Green <andy.green@linaro.org> reported
the serial wakeup problem that led to the discovery of this problem.
Kevin Hilman <khilman@ti.com> narrowed the problem down to the use of
no_console_suspend.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: John Stultz <johnstul@us.ibm.com>
Cc: Andy Green <andy.green@linaro.org>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Currently all omap_devices are forced to have the dummy device
'omap_device_parent' as a parent. This was used to distinguish
omap_devices from "normal" platform_devices in the OMAP PM core code.
Now that we implement the PM core using PM domains, this is no longer
needed, and is removed.
This also frees up omap_devices to have a more complex parent/child
relationships that model actual device relationships.
The only in-tree user of omap_device_parent was the OMAP PM layer to
handle lost-context count for omap_devices. That is now converted to
use the presence of the omap_device_pm_domain instead.
Signed-off-by: Kevin Hilman <khilman@ti.com>
Check the return code pointer value from debugfs_create_dir for error
or NULL.
Also added an additional check to prevent the creation of a 'suspend'
entry at the debugfs root in case a power domain directory cannot be
created.
Signed-off-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
clkdms_setup() is identical across OMAP2, 3, and 4, so share it.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Tested-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Clean up a few different parts of omap_set_pwrdm_state():
- Remove a superfluous call to pwrdm_state_switch(). Not needed
unless LOWPOWERSTATECHANGE is used, because the state switch code is
called by either clkdm_sleep() or clkdm_allow_idle().
- Add code to wait for the power state transition in the OMAP4+ low
power state change. This is speculative, so I would particularly
appreciate feedback on this part.
- Remove a superfluous call to pwrdm_read_pwrst().
- Update variable names to be more meaningful (hopefully) and precise.
- Fix an error path bug that would not place the clockdomain back into
hardware-supervised idle or sleep mode if the power state could not
be programmed.
The documentation for this function still needs major improvements;
that's left for a later patch.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Tested-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Remove some superfluous calls to pwrdm_clear_all_prev_pwrst().
pwrdm_pre_transition(), which appears a few lines after these calls,
invokes pwrdm_clear_all_prev_pwrst() on each powerdomain -- there's no
need to do it twice.
N.B.: some of us have observed that accesses to the previous
powerstate registers seem to be quite slow. Although the writes
removed by this patch should be buffered by the write buffer, there is
a read to a PRM register immediately afterwards. That will block the
OMAP3 MPU until all of those writes complete. So this patch should
result in a minor performance improvement during idle entry.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Tero Kristo <t-kristo@ti.com>
[khilman@ti.com: removed a couple more for OMAP4]
Tested-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Minor fixes that weren't urgent enough to go into 3.3. The two paz00
patches are in mainline already but got merged after the branch point
for this branch, so they're duplicated. I also ended up merging in
rmk/for-armsoc into this later on to fix a bug introduced by it, so it's
included but it's not the base of this branch.
* tag 'tegra-cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/tegra:
ARM: tegra: Enable CPUIdle on Tegra20
ARM: tegra: export usb phy symbols
ARM: tegra: build localtimer support only when needed
ARM: tegra: select CPU_FREQ_TABLE
ARM: tegra: select required CPU and L2 errata options
ARM: tegra: paz00: fix wrong UART port on mini-pcie plug
ARM: tegra: paz00: fix wrong SD1 power gpio
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
As the LP3 code also works for Tegra20, we can enable cpuidle for Tegra20.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
The ehci driver can be a module, so the functions provided
by the tegra platform code used by ehci-tegra need to
be exported.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alan Ott <alan@signal11.us>
Signed-off-by: Olof Johansson <olof@lixom.net>
It is possible to build a tegra kernel without localtimer
support, so the tegra specific parts should only be built
when that is indeed enabled.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alan Ott <alan@signal11.us>
Signed-off-by: Olof Johansson <olof@lixom.net>
The tegra cpufreq implementation relies on the cpu_freq_table
code, so make sure that this is always there when needed.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alan Ott <alan@signal11.us>
Signed-off-by: Olof Johansson <olof@lixom.net>
S3C-SoCs starting with the S3C2443 can share a lot of functionality.
The file can collect more common code of these SocS later on and
therefore gets a new name to reflect this future purpose.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This patch moves S3C2443 stuff into mach-s3c24xx/ directory
so that we can merge the s3c24 series' directories to the
just one mach-s3c24xx/ directory.
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This patch moves S3C2440 stuff into mach-s3c24xx/ directory
so that we can merge the s3c24 series' directories to the
just one mach-s3c24xx/ directory.
And this patch is including following.
- re-ordered alphabetically by option text at Kconfig and Makefile
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This patch moves S3C2416 stuff into mach-s3c24xx/ directory
so that we can merge the s3c24 series' directories to the
just one mach-s3c24xx/ directory.
Cc: Ben Dooks <ben-linux@fluff.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
[kgene.kim@samsung.com: removed compiling s3c2416 as per Heiko's suggestion]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This patch moves S3C2412 stuff into mach-s3c24xx/ directory
so that we can merge the s3c24 series' directories to the
just one mach-s3c24xx/ directory.
And this patch is including following.
- re-ordered alphabetically by option text at Kconfig and Makefile
Cc: Ben Dooks <ben-linux@fluff.org>
[heiko@sntech.de: move 'config S3C2412_PM_SLEEP' to use it for S3C2416]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This patch moves S3C2410 stuff into mach-s3c24xx/ directory
so that we can merge the s3c24 series' directories to the
just one mach-s3c24xx/ directory.
And this patch is including following.
- re-ordered alphabetically by option text at Kconfig and Makefile
- removed unused option, MACH_N35
- fixed duplcated option name, S3C2410_DMA to S3C24XX_DMA which is
in plat-s3c24xx/
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This patch changes the ARCH name to "ARCH_S3C24XX" for Samsung
S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443,
and S3C2450 SoCs so that we can merge the mach-xxx directories
and plat-s3c24xx dir. to just one mach-s3c24xx for them.
I think this should be sent to upstream via samsung tree because
this touches many samsung stuff.
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Chris Ball <cjb@laptop.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
[for the gadget part:]
Acked-by: Felipe Balbi <balbi@ti.com>
[for the framebuffer (video) part:]
Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
[For the watchdog-part:]
Acked-by: Wim Van Sebroeck <wim@iguana.be>
Cc: Sangbeom Kim <sbkim73@samsung.com>
Cc: Liam Girdwood <lrg@ti.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Conflicts:
arch/arm/mach-omap1/gpio16xx.c
drivers/gpio/gpio-omap.c
Merge in the runtime-pm-cleanup branch from the gpio tree into
next/cleanup, this resolves a nonobvious merge conflict between
the two branches. Both branches move parts of the gpio-omap
driver into platform code, this takes the superset of both
changes.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: Fix L4_EMU_34XX_BASE error after iomap changes
ARM: OMAP2+: Limit omap_read/write usage to legacy USB drivers
ARM: OMAP: Remove plat/io.h by splitting it into mach/io.h and mach/hardware.h
ARM: OMAP2+: Move most of plat/io.h into local iomap.h
ARM: OMAP1: Move most of plat/io.h into local iomap.h
ARM: OMAP1: Move 16xx GPIO system clock to platform init code
ARM: OMAP: Move omap_init_consistent_dma_size() to local common.h
ARM: OMAP2+: Move SDRC related functions from io.h into local common.h
ARM: OMAP2+: Drop DISPC L3 firewall code
ARM: OMAP2xxx: PM: remove obsolete timer disable code in the suspend path
ARM: OMAP: McSPI: Remove unused flag from struct omap2_mcspi_device_config
(update to latest rmk/for-arm-soc branch)
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
With the introduction of iomap changes platform init code
fails for emu.c if CONFIG_OMAP3_EMU is selected:
arch/arm/mach-omap2/emu.c:35:8: error:
'L4_EMU_34XX_BASE' undeclared here (not in a function)
Signed-off-by: Tony Lindgren <tony@atomide.com>
Since next alarm time is already calculated in rtc common interface, we
needn't keep this logic in rtc-sa1100.c any more.
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Since periodic timer is already supported by hrtimer in rtc interface,
we needn't keep the duplicated code in rtc-sa1100.c any more.
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
