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Now that we have all the static mappings from iotable_init() located
in the vmalloc area, it is trivial to optimize ioremap by reusing those
static mappings when the requested physical area fits in one of them,
and so in a generic way for all platforms.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Kevin Hilman <khilman@ti.com>
Tested-by: Jamie Iles <jamie@jamieiles.com>
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Firstly, there is no need to have a double pointer here as we're only
walking the vmlist and not modifying it.
Secondly, for the same reason, we don't need a write lock but only a
read lock here, since the lock only protects the coherency of the list
nothing else.
Lastly, the reason for holding a lock is not what the comment says, so
let's remove that misleading piece of information.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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In order to remove the build time variation between different SOCs with
regards to VMALLOC_END, the iotable mappings are now allocated inside
the vmalloc region. This allows for VMALLOC_END to be identical across
all machines.
The value for VMALLOC_END is now set to 0xff000000 which is right where
the consistent DMA area starts.
To accommodate all static mappings on machines with possible highmem usage,
the default vmalloc area size is changed to 240 MB so that VMALLOC_START
is no higher than 0xf0000000 by default.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Kevin Hilman <khilman@ti.com>
Tested-by: Jamie Iles <jamie@jamieiles.com>
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Some upcoming changes must know the VMALLOC_START value, which is based
on high_memory, before bootmem_init() is called.
The best location to set it is in sanity_check_meminfo() where the needed
computation is already done, and in the non MMU case it is trivial to do
now that the meminfo array is already sorted at that point.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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The meminfo array has to be sorted before sanity_check_meminfo() in
arch/arm/mm/mmu.c is called for it to work properly. This also allows
for a simpler find_limits() in arch/arm/mm/init.c.
The sort is moved to arch/arm/kernel/setup.c because that's where the
meminfo array is populated. Eventually this should be improved upon
to make the memory bank parser a bit more robust against problems
such as overlapping memory ranges.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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REALVIEW_EB11MP_GIC_CPU_BASE is not 4KB aligned which causes an
overlapping mapping. Use REALVIEW_EB11MP_SCU_BASE instead which is
aligned.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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REALVIEW_PBX_TILE_GIC_CPU_BASE is not 4KB aligned which causes an
overlapping mapping. Use REALVIEW_PBX_TILE_SCU_BASE instead which is
aligned.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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The map_desc for VERSATILE_GPIO0_BASE overlaps with VERSATILE_SCTL_BASE.
The overlapping entry can be removed.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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A generic version should replace this later.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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A generic version should replace this later.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Reviewed-by: Deepak Saxena <dsaxena@linaro.org>
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A generic version should replace this later.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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A generic version should replace this later.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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Using VMALLOC_END implies a presumption about the layout which is best
avoided, even if in practice this would not change much.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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A generic version should replace this later.
As io.c has become nearly empty, omap_init_consistent_dma_size() is moved
into common.c so that io.c can be removed entirely.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Kevin Hilman <khilman@ti.com>
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A generic version should replace this later.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
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A generic version should replace this later.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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A generic version should replace this later.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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... since it is going to change.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Barry Song <baohua.song@csr.com>
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This include is unnecessary.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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* 'rmobile-fixes-for-linus' of git://github.com/pmundt/linux-sh:
ARM: mach-shmobile: cpuidle single/global and last_state fixes
ARM: mach-shmobile: move helper macro PORTCR to sh_pfc.h
ARM: mach-shmobile: move helper macro PORT_xx to sh_pfc.h
ARM: mach-shmobile: move helper macro PORT_DATA_xx to sh_pfc.h
ARM: mach-shmobile: ap4evb: remove white space from end of line
ARM: mach-shmobile: clock-sh7372: remove un-necessary index
ARM: mach-shmobile: kota2: add comment out separator
ARM: mach-shmobile: sh73a0: add MMC data pin pull-up
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* 'sh-fixes-for-linus' of git://github.com/pmundt/linux-sh:
mailmap: Fix up some renesas attributions
sh: clkfwk: Kill off remaining debugfs cruft.
drivers: sh: Kill off dead pathname for runtime PM stub.
drivers: sh: Generalize runtime PM platform stub.
sh: Wire up process_vm syscalls.
sh: clkfwk: add clk_rate_mult_range_round()
serial: sh-sci: Fix up SH-2A SCIF support.
sh: Fix cached/uncaced address calculation in 29bit mode
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into fixes
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git://git.pengutronix.de/git/imx/linux-2.6 into fixes
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The following error is seen in some case when mounting rootfs from
SD/MMC cards.
Waiting for root device /dev/mmcblk0p1...
mmc1: host does not support reading read-only switch. assuming write-enable.
mmc1: new high speed SDHC card at address b368
mmcblk0: mmc1:b368 SDC 3.74 GiB
mmcblk0: p1
mmc1: Timeout waiting for hardware interrupt.
mmcblk0: error -110 transferring data, sector 3678224, nr 40, cmd response 0x900, card status 0xc00
end_request: I/O error, dev mmcblk0, sector 3678225
Buffer I/O error on device mmcblk0p1, logical block 458754
lost page write due to I/O error on mmcblk0p1
This patch fixes the problem by lowering the usdhc clock and correcting
watermark configuration.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Chris Ball <cjb@laptop.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The AUTO_ZRELADDR selection for ARCH_IMX_V4_V5 and ARCH_MX5 should
really be mutually exclusive to ZBOOT_ROM just like what ARCH_IMX_V6_V7
does.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The config symbol ARCH_MX3 has been removed by commit 'a89cf59
arm/imx: merge i.MX3 and i.MX6', and it should not be referenced
any more.
The patch also change ARCH_MX* to SOC_IMX* for other platforms.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Richard Zhao <richard.zhao@linaro.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The following commits break cpuidle on SH-Mobile ARM:
46bcfad cpuidle: Single/Global registration of idle states
e978aa7 cpuidle: Move dev->last_residency update to driver enter routine; remove dev->last_state
This patch remedies these issues by up-porting the SH-Mobile
code to fit with the above introduced framework changes.
It is worth noting that the new code becomes significantly cleaner,
so these framework changes are very welcome. At the same time this
breakage could probably have been avoided by grepping for "last_state"
and "cpuidle_register_driver".
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This patch moves PORT_xx helper macro to sh_pfc.h,
and it expects CPU_ALL_PORT() macro for each CPU
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This patch move PORT_DATA_xx helper macro to sh_pfc.h.
and pfc-sh7372.c used it
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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it is not necessary to have sh7372_xxxx index on static variable
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This patch adds MMC data pin pull-up option for pfc-sh73a0.c,
and select it on ag5evm board.
The MMC read/write will be error without this patch.
Cc: Takashi YOSHII <takashi.yoshii.zj@renesas.com>
Tested-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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The runtime PM platform support stub in use by ARM-based SH/R-Mobile
platforms contains nothing that's specifically ARM-related and instead of
wholly generic to anything using the clock framework.
The recent runtime PM changes interact rather badly with the lazy
disabling of clocks late in the boot process through the clock framework,
leading to situations where the runtime suspend/resume paths are entered
without a clock being actively driven due to having been lazily gated
off.
In order to correct this we can trivially tie in the aforementioned stub
as a general fallback for all SH platforms that don't presently have
their own runtime PM implementations (the corner case being SH-based
SH-Mobile platforms, which have their own stub through the hwblk API --
which in turn has bitrotted and will be subsequently adapted to use the
same stub as everyone else), regardless of whether the platforms choose
to define power domains of their own or not.
This fixes up regressions for clock framework users who also build in
runtime PM support without any specific power domains of their own, which
was previously causing the serial console to be lost when warring with
lazy clock disabling.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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into fixes
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git://git.kernel.org/pub/scm/linux/kernel/git/olof/tegra into fixes
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Enable the headphone detection gpio on tegra platform.
Signed-off-by: Yufeng Shen <miletus@chromium.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
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Ventana uses the same SDHCI GPIOs as Seaboard; PI6 (70) is the power GPIO
for the SD port, and there is no power GPIO for the MMC chip.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
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*_pinmux_init() register the GPIO and pinmux devices so that they're ready
before any other device needs them.
*_pinmux_init() are also called by board-dt.c in order to set up the GPIO
and pinmux configurations. In this case, if we register the devices, they
end up being probed once due to this registration, and a second time due
to a device-tree node (or vice-versa). The second probe fails since the
memory regions are already requested. Besides, we don't actually want the
duplicated devices.
To avoid this duplicate registration, modify *_pinmux_init() to check
whether it's running on a DT machine. If not, register the pinmux devices.
If so, don't register them.
Finally, modify board-dt.c to call the *_pinmux_init() after all devices have
been instantiated from device-tree. This allows the GPIO and pinmux devices
to be instantiated and initialized before calling functions to configure the
hardware.
This has one disadvantage: The pinmux and GPIO initialization now happens
after /all/ devices are instantiated, rather than after just gpio and
pinmux but before anything else. So the correct HW configuration is not
in place when e.g. the SD/MMC device is probed. Long-term, this should be
solved by doing both:
a) Initializing the HW state from DT nodes during GPIO and pinmux device
probe.
b) Using the deferred driver probe mechanism, so that drivers can defer
their probe until after the gpio and pinmux drivers have probed.
v2: s/int is_dt/bool is_dt/
v3: Use of_machine_is_compatible inside *_pinmux_init() rather than passing
an explicit parameter into the function from outside.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.linaro.org/people/shawnguo/linux-2.6 into fixes
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Since 193ab2a6070039e7ee2b9b9bebea754a7c52fd1b, various AT91 boards don't
register USBA adapters anymore due to depending on a now non-existing
symbol. Fix the symbol name.
Signed-off-by: Jochen Friedrich <jochen@scram.de>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
CC: stable@kernel.org
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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VMALLOC_END is defined in terms of AT91_VIRT_BASE but this needs
mach/hardware.h for it's definition.
In file included from arch/arm/mach-at91/board-usb-a926x.c:26:0:
include/linux/mm.h: In function 'is_vmalloc_addr':
include/linux/mm.h:305:41: error: 'AT91_VIRT_BASE' undeclared (first use in this function)
include/linux/mm.h:305:41: note: each undeclared identifier is reported only once for each function it appears in
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
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In commit fb149f9e28354 we introduce ioremap support for static map_io, we do
not need this register entry anymore.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
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639da5ee3 (ARM: add an extra temp register to the low level debugging
addruart macro) didn't include picoxcell as it hadn't been merged at the
time. Fix up the compile breakage by adding the extra temp parameter.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
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CONFIG_MSM_SCM uses the smc instruction, which with some
toolchains requires a ".arch_extension" directive.
Cc: David Brown <davidb@codeaurora.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: David Brown <davidb@codeaurora.org>
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