Commit Graph

154 Commits

Author SHA1 Message Date
Felix Fietkau 774f0c6419 MIPS: Lantiq: Keep ethernet enabled during boot
Disabling ethernet during reboot (only to enable it again when the
ethernet driver attaches) can put the chip into a faulty state where it
corrupts the header of all incoming packets.

This happens if packets arrive during the time window where the core is
disabled, and it can be easily reproduced by rebooting while sending a
flood ping to the broadcast address.

Fixes: 95135bfa7e ("MIPS: Lantiq: Deactivate most of the devices by default")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: John Crispin <john@phrozen.org>
Cc: hauke.mehrtens@lantiq.com
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 4.4.x-
Patchwork: https://patchwork.linux-mips.org/patch/15078/
Signed-off-by: James Hogan <james.hogan@imgtec.com>
2017-02-17 11:14:29 +00:00
Hauke Mehrtens 9050d50e22 MIPS: lantiq: Set physical_memsize
physical_memsize is needed by the vpe loader code and the platform
specific code has to define it. This value will be given to the
firmware loaded with the VPE loader. I am not aware of any standard
interface or better value to provide here.

Reported-by: kbuild test robot <lkp@intel.com>
Fixes: d9ae4f18c0 ("MIPS: Lantiq: Activate more drivers in default configuration")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: John Crispin <john@phrozen.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14908/
Signed-off-by: James Hogan <james.hogan@imgtec.com>
2017-02-15 10:18:47 +00:00
Paul Gortmaker 26dd3e4ff9 MIPS: Audit and remove any unnecessary uses of module.h
Historically a lot of these existed because we did not have
a distinction between what was modular code and what was providing
support to modules via EXPORT_SYMBOL and friends.  That changed
when we forked out support for the latter into the export.h file.

This means we should be able to reduce the usage of module.h
in code that is obj-y Makefile or bool Kconfig.  In the case of
some code where it is modular, we can extend that to also include
files that are building basic support functionality but not related
to loading or registering the final module; such files also have
no need whatsoever for module.h

The advantage in removing such instances is that module.h itself
sources about 15 other headers; adding significantly to what we feed
cpp, and it can obscure what headers we are effectively using.

Since module.h might have been the implicit source for init.h
(for __init) and for export.h (for EXPORT_SYMBOL) we consider each
instance for the presence of either and replace/add as needed.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

Build coverage of all the mips defconfigs revealed the module.h
header was masking a couple of implicit include instances, so
we add the appropriate headers there.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: David Daney <david.daney@cavium.com>
Cc: John Crispin <john@phrozen.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: "Steven J. Hill" <steven.hill@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15131/
[james.hogan@imgtec.com: Preserve sort order where it already exists]
Signed-off-by: James Hogan <james.hogan@imgtec.com>
2017-02-14 09:00:25 +00:00
Felix Fietkau 6c356eda22 MIPS: Lantiq: Fix cascaded IRQ setup
With the IRQ stack changes integrated, the XRX200 devices started
emitting a constant stream of kernel messages like this:

[  565.415310] Spurious IRQ: CAUSE=0x1100c300

This is caused by IP0 getting handled by plat_irq_dispatch() rather than
its vectored interrupt handler, which is fixed by commit de856416e714
("MIPS: IRQ Stack: Fix erroneous jal to plat_irq_dispatch").

Fix plat_irq_dispatch() to handle non-vectored IPI interrupts correctly
by setting up IP2-6 as proper chained IRQ handlers and calling do_IRQ
for all MIPS CPU interrupts.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15077/
[james.hogan@imgtec.com: tweaked commit message]
Signed-off-by: James Hogan <james.hogan@imgtec.com>
2017-02-13 18:58:53 +00:00
Hauke Mehrtens 98e58b01e1 MIPS: Lantiq: Lock DMA register accesses for SMP
The DMA controller channel and port configuration is changed by
selecting the port or channel in one register and then update the
configuration in other registers. This has to be done in an atomic
operation. Previously only the local interrupts were deactivated which
works for single CPU systems. If the system supports SMP a better
locking is needed, use spinlocks instead.
On more recent SoCs (at least xrx200 and later) there are two memory
regions to change the configuration, there we could use one area for
each CPU and do not have to synchronize between the CPUs and more.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Cc: john@phrozen.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14912/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-25 02:51:12 +01:00
Arnd Bergmann 98ea51cb0c MIPS: Lantiq: Fix another request_mem_region() return code check
Hauke already fixed a couple of them, but one instance remains
that checks for a negative integer when it should check
for a NULL pointer:

arch/mips/lantiq/xway/sysctrl.c: In function 'ltq_soc_init':
arch/mips/lantiq/xway/sysctrl.c:473:19: error: ordered comparison of pointer with integer zero [-Werror=extra]

Fixes: 6e80785267 ("MIPS: Lantiq: Fix check for return value of request_mem_region()")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/15043/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-25 02:51:10 +01:00
Hauke Mehrtens ba735155b9 MIPS: Lantiq: Fix mask of GPE frequency
The hardware documentation says bit 11:10 are used for the GPE
frequency selection. Fix the mask in the define to match these bits.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Thomas Langer <thomas.langer@intel.com>
Cc: linux-mips@linux-mips.org
Cc: john@phrozen.org
Patchwork: https://patchwork.linux-mips.org/patch/14648/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-12-11 11:20:25 +01:00
Paul Gortmaker 6f42e0e384 MIPS: Lantiq: Make xrx200_phy_fw explicitly non-modular
The Kconfig currently controlling compilation of this code is:

arch/mips/lantiq/Kconfig:config XRX200_PHY_FW
arch/mips/lantiq/Kconfig:       bool "XRX200 PHY firmware loader"

...meaning that it currently is not being built as a module by anyone.

Lets remove the couple traces of modular infrastructure use, so that
when reading the driver there is no doubt it is builtin-only.

Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

We also delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.

We don't replace module.h with init.h since the file doesn't need that.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/13932/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-04 16:13:57 +02:00
Paul Gortmaker 0008ef9b15 MIPS: Lantiq: Make vmmc explicitly non-modular
The Makefile entry controlling compilation of this code is:

arch/mips/lantiq/xway/vmmc.o
   ---> arch/mips/lantiq/xway/Makefile:obj-y += vmmc.o

...meaning that it currently is not being built as a module by anyone.

Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

We replace module.h with export.h since the file does actually use
EXPORT_SYMBOL.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/13930/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-04 16:13:57 +02:00
Ralf Baechle 4a89cf8101 Merge branch '4.7-fixes' into mips-for-linux-next 2016-08-03 12:55:49 +02:00
Sudip Mukherjee 891ab0642f MIPS: Lantiq: Fix build failure
Some configs of mips like xway_defconffig are failing with the error:
arch/mips/lantiq/irq.c:209:2: error: initialization from incompatible
pointer type [-Werror]
  "icu",
  ^
arch/mips/lantiq/irq.c:209:2: error: (near initialization for
'ltq_irq_type.parent_device') [-Werror]
arch/mips/lantiq/irq.c:219:2: error: initialization from incompatible
pointer type [-Werror]
  "eiu",
  ^
arch/mips/lantiq/irq.c:219:2: error: (near initialization for
'ltq_eiu_type.parent_device') [-Werror]

The first member of the "struct irq" is no longer a pointer for the
name.

Fixes: be45beb2df ("genirq: Add runtime power management support for IRQ chips")
Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Acked-by: John Crispin <john@phrozen.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/13684/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-03 07:54:49 +02:00
Jonas Gorski 15f37e1588 MIPS: store the appended dtb address in a variable
Instead of rewriting the arguments to match the UHI spec, store the
address of a appended or UHI supplied dtb in fw_supplied_dtb.

That way the original bootloader arugments are kept intact while still
making the use of an appended dtb invisible for mach code.

Mach code can still find out if it is an appended dtb by comparing
fw_arg1 with fw_supplied_dtb.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: John Crispin <john@phrozen.org>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Alban Bedel <albeu@free.fr>
Cc: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Cc: Antony Pavlov <antonynpavlov@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/13699/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-02 14:00:16 +02:00
Hauke Mehrtens 7bf0d5e8e6 MIPS: Lantiq: Register IRQ handler for virtual IRQ number
We used the hardware IRQ number to register the IRQ handler and not the
virtual one. This probably caused some problems because the hardware
IRQ numbers are only unique for each IRQ controller and not in the
system. The virtual IRQ number is managed by Linux and unique in the
system. This was probably the reason there was a gab of 8 IRQ numbers added
before the numbers used for the lantiq IRQ controller. With the current
setup the hardware and the virtual IRQ numbers are the same.

Reported-by: Thomas Langer <thomas.langer@intel.com>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: John Crispin <john@phrozen.org>
Cc: thomas.langer@intel.com
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/13539/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-07-24 12:39:59 +02:00
John Crispin f97e5e8ef8 MIPS: Lantiq: Use the real EXIN count
We runtime load the available external interrupts into an array and store
the number inside exin_avail. Some of the code however uses MAX_EIU for
looping over the array which may partially be 0. This is a cosmetic fix as
the existing code works as is. It is just nicer to only loop over the array
elements that were actually populated during probe.

Signed-off-by: John Crispin <john@phrozen.org>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/13602/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-07-24 12:31:58 +02:00
John Crispin fe46e5032e MIPS: Lantiq: Fix eiu interrupt loading code
Using of_irq_count to load the irq index from the devicetree is incorrect.
This will cause the kernel to map them regardless, even if they dont
actually get used. Change the code to use of_property_count_u32_elems()
instead which is the correct API to use in this case.

Signed-off-by: John Crispin <john@phrozen.org>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/13601/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-07-24 12:31:44 +02:00
John Crispin f0bbe4dc5c MIPS: Lantiq: Fix eiu interrupt loading code
Using of_irq_count to load the irq index from the devicetree is incorrect.
This will cause the kernel to map them regardless, even if they dont
actually get used. Change the code to use of_property_count_u32_elems()
instead which is the correct API to use in this case.

Signed-off-by: John Crispin <john@phrozen.org>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/13601/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-07-24 12:30:28 +02:00
John Crispin 97b921087f MIPS: Change my email address
The old address is no longer valid. Use the my new one instead.

Signed-off-by: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/13201/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:02:18 +02:00
Hauke Mehrtens e791dfb5fb MIPS: Lantiq: Make it possible to build in no device tree
Now it is possible to build in no device tree at all and depend on the
boot loader providing one or someone concatenating a device tree to the
end of the image.

This was copied from arch/mips/bmips/Kconfig

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12899/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:44 +02:00
Hauke Mehrtens 84f47cf49e MIPS: Lantiq: Add support for device tree file from boot loader
This fetches the device tree file like it is specified in the MIPS UHI
interface if one was found. This is also used when the device tree file
was appended to the kernel image with cat.
This code is copied from arch/mips/bmips/setup.c.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12898/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:44 +02:00
Philipp Zabel 24bc827beb MIPS: lantiq: Make reset_control_ops const
The reset_ops structure is never modified. Make it const.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Cc: kernel@pengutronix.de
Patchwork: https://patchwork.linux-mips.org/patch/12619/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:43 +02:00
Jonas Gorski 2bcef9b457 MIPS: Make MIPS_CMDLINE_DTB default
Seval of-enabled machines (bmips, lantiq, xlp, pistachio, ralink) copied
the arguments from dtb to arcs_command_line to prevent the kernel from
overwriting them.

Since there is now an option to keep the dtb arguments, default to the
new option remove the "backup" to arcs_command_line in case of USE_OF is
enabled, except for those platforms that still take the bootloader
arguments or do not use any at all.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: John Crispin <blogic@openwrt.org>
Cc: Ganesan Ramalingam <ganesanr@broadcom.com>
Cc: Jayachandran C <jchandra@broadcom.com>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: James Hartley <james.hartley@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/11285/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:38:37 +01:00
John Crispin 08b3c894e5 MIPS: lantiq: Disable xbar fpi burst mode
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11458/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:38:24 +01:00
John Crispin 9eb8c69e0b MIPS: lantiq: Force the crossbar to big endian
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11450/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:38:23 +01:00
John Crispin 26cfdbe30d MIPS: lantiq: Initialize the USB core on boot
There is a DWC2 USB core in these SoCs. To make USB work we need to first
reset and power the state machine. These are SoC specific registers and
not part of the actual USB core.

Signed-off-by: Antti Seppälä <a.seppala@gmail.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11449/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:38:21 +01:00
John Crispin 1601078df2 MIPS: lantiq: Return correct value for fpi clock on ar9
Some configurations of AR9 reported the incorrect speed for the fpi bus.

Signed-off-by: Ben Mulvihill <ben.mulvihill@gmail.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11448/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:38:18 +01:00
Hauke Mehrtens 6e80785267 MIPS: Lantiq: Fix check for return value of request_mem_region()
request_mem_region() returns a pointer and not an integer with an error
value. A check for "< 0" on a pointer will cause problems, replace it
with not null checks instead. This was found with sparse.

Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11395/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:37:34 +01:00
Hauke Mehrtens 13648d7245 MIPS: Lantiq: Add support for xRX220 SoC
Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11394/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:37:31 +01:00
Hauke Mehrtens 5072d8142a MIPS: Lantiq: Add misc clocks
Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11393/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:37:30 +01:00
Hauke Mehrtens e71f6d356d MIPS: Lantiq: Add 1e103100.deu clock
Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11392/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:37:25 +01:00
Hauke Mehrtens a3a6853498 MIPS: Lantiq: Add clock for mei driver
Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11391/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:37:23 +01:00
Hauke Mehrtens a5c1aad853 MIPS: Lantiq: Add SoC detection for ar10 and grx390
Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11390/
Patchwork: https://patchwork.linux-mips.org/patch/11399/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:37:21 +01:00
Hauke Mehrtens eefee024b0 MIPS: Lantiq: Add support for gphy firmware loading for ar10 and grx390
Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11389/
Patchwork: https://patchwork.linux-mips.org/patch/11398/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:37:18 +01:00
Hauke Mehrtens d0b991e376 MIPS: Lantiq: Add pmu bits for ar10 and grx390
Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11388/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:37:16 +01:00
Hauke Mehrtens e182c98a59 MIPS: Lantiq: Add PMU bits for USB and SDIO devices
This adds the PUM bits for USB and SDIO devices

Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11387/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:37:13 +01:00
Hauke Mehrtens 95135bfa7e MIPS: Lantiq: Deactivate most of the devices by default
When the SoC starts up most of the devices should be deactivated by the
PMU, they should be activated when they get used by their drivers. Some
devices should not get deactivate at startup like the serial, register
them in a special way.

Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11386/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:37:11 +01:00
Hauke Mehrtens 61e371d822 MIPS: Lantiq: Add clock detection for grx390 and ar10
This add detection of some clocks on the ar10 and grx390.

Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11385/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:37:09 +01:00
Hauke Mehrtens 18a3af60fc MIPS: Lantiq: Fix pp32 clock on vr9
The vendor code uses different clock values for this clock.

Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11384/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:37:06 +01:00
Hauke Mehrtens b5a03d0cb3 MIPS: Lantiq: Rename CGU_SYS_VR9 register
This register is also used on other SoCs.

Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11383/
Patchwork: https://patchwork.linux-mips.org/patch/11397/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:37:05 +01:00
Hauke Mehrtens 758d2443ed MIPS: Lantiq: Add support for setting PMU register on AR10 and GRX390
This adds support for setting the PMU register on the AR10 and GRX390.

Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11382/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:37:01 +01:00
Hauke Mehrtens cab7b8363c MIPS: Lantiq: Add locking for PMU register and check status afterwards
The PMU register are accessed in a non atomic way and they could be
accessed by different threads simultaneously, which could cause
problems this patch adds locking around the PMU registers. In
addition we now also wait till the PMU is actually deactivated.

[ralf@linux-mips.org: Fix spelling mistake in commit message as noticed
by Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>.]

Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11381/
Patchwork: https://patchwork.linux-mips.org/patch/11396/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:37:00 +01:00
Hauke Mehrtens 500fab97c6 MIPS: lantiq: add clk_round_rate()
This adds a basic implementation of clk_round_rate()
The clk_round_rate() function is called by multiple drivers and
subsystems now and the lantiq clk driver is supposed to export this,
but doesn't do so, this causes linking problems like this one:
ERROR: "clk_round_rate" [drivers/media/v4l2-core/videodev.ko] undefined!

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: <stable@vger.kernel.org> # 4.1+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11358/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-11-11 08:36:48 +01:00
Felix Fietkau 0cb0985f57 MIPS: Export get_c0_perfcount_int()
get_c0_perfcount_int is tested from oprofile code. If oprofile is
compiled as module, get_c0_perfcount_int needs to be exported, otherwise
it cannot be resolved.

Fixes: a669efc4a3 ("MIPS: Add hook to get C0 performance counter interrupt")
Cc: stable@vger.kernel.org # v3.19+
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: abrestic@chromium.org
Patchwork: https://patchwork.linux-mips.org/patch/10763/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-08-03 09:25:18 +02:00
Alex Smith 4ace6139bf MIPS: SMP: Don't increment irq_count multiple times for call function IPIs
The majority of SMP platforms handle their IPIs through do_IRQ()
which calls irq_{enter/exit}(). When a call function IPI is received,
smp_call_function_interrupt() is called which also calls
irq_{enter,exit}(), meaning irq_count is raised twice.

When tick broadcasting is used (which is implemented via a call
function IPI), this incorrectly causes all CPU idle time on the core
receiving broadcast ticks to be accounted as time spent servicing
IRQs, as account_process_tick() will account as such if irq_count is
greater than 1. This results in 100% CPU usage being reported on a
core which receives its ticks via broadcast.

This patch removes the SMP smp_call_function_interrupt() wrapper which
calls irq_{enter,exit}(). Platforms which handle their IPIs through
do_IRQ() now call generic_smp_call_function_interrupt() directly to
avoid incrementing irq_count a second time. Platforms which don't
(loongson, sgi-ip27, sibyte) call generic_smp_call_function_interrupt()
wrapped in irq_{enter,exit}().

Signed-off-by: Alex Smith <alex.smith@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10770/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-08-03 09:25:12 +02:00
Aaro Koskinen aa816c1b39 MIPS: mark prom_free_prom_memory() everywhere with __init
On OCTEON the function is non-trivial and we can potentially even save
some memory.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9338/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-04-01 17:21:58 +02:00
Wolfram Sang 1e294287bb MIPS: lantiq: xway: drop owner assignment from platform_drivers
This platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8823/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-04-01 17:21:54 +02:00
Linus Torvalds e6b5be2be4 Driver core patches for 3.19-rc1
Here's the set of driver core patches for 3.19-rc1.
 
 They are dominated by the removal of the .owner field in platform
 drivers.  They touch a lot of files, but they are "simple" changes, just
 removing a line in a structure.
 
 Other than that, a few minor driver core and debugfs changes.  There are
 some ath9k patches coming in through this tree that have been acked by
 the wireless maintainers as they relied on the debugfs changes.
 
 Everything has been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core update from Greg KH:
 "Here's the set of driver core patches for 3.19-rc1.

  They are dominated by the removal of the .owner field in platform
  drivers.  They touch a lot of files, but they are "simple" changes,
  just removing a line in a structure.

  Other than that, a few minor driver core and debugfs changes.  There
  are some ath9k patches coming in through this tree that have been
  acked by the wireless maintainers as they relied on the debugfs
  changes.

  Everything has been in linux-next for a while"

* tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
  Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
  fs: debugfs: add forward declaration for struct device type
  firmware class: Deletion of an unnecessary check before the function call "vunmap"
  firmware loader: fix hung task warning dump
  devcoredump: provide a one-way disable function
  device: Add dev_<level>_once variants
  ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
  ath: use seq_file api for ath9k debugfs files
  debugfs: add helper function to create device related seq_file
  drivers/base: cacheinfo: remove noisy error boot message
  Revert "core: platform: add warning if driver has no owner"
  drivers: base: support cpu cache information interface to userspace via sysfs
  drivers: base: add cpu_device_create to support per-cpu devices
  topology: replace custom attribute macros with standard DEVICE_ATTR*
  cpumask: factor out show_cpumap into separate helper function
  driver core: Fix unbalanced device reference in drivers_probe
  driver core: fix race with userland in device_add()
  sysfs/kernfs: make read requests on pre-alloc files use the buffer.
  sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
  fs: sysfs: return EGBIG on write if offset is larger than file size
  ...
2014-12-14 16:10:09 -08:00
John Crispin 9bc7ebcbf1 MIPS: lantiq: add missing spi clock on falcon SoC
Signed-off-by: Thomas Langer <thomas.langer@lantiq.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/8050/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-11-24 07:45:18 +01:00
John Crispin eb5dbd22b6 MIPS: lantiq: the detection of the gpe clock is broken
The code to detect unfused SoCs was broken due to missing register masking.

Signed-off-by: Thomas Langer <thomas.langer@lantiq.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/8049/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-11-24 07:45:18 +01:00
John Crispin 17327862f3 MIPS: lantiq: copy the commandline from the devicetree
This is a regression caused by:
commit afb46f7996
Author: Rob Herring <robh@kernel.org>
Date:   Wed Apr 2 19:07:24 2014 -0500
mips: ralink: convert to use unflatten_and_copy_device_tree

Make the of init code reuse the cmdline defined inside the dts.

Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/8048/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-11-24 07:45:18 +01:00
John Crispin d32caf94e0 MIPS: lantiq: move eiu init after irq_domain register
The eiu init failed as the irq_domain was not yet available.

Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/8047/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-11-24 07:45:18 +01:00