16 Jun, 2020
1 commit
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There is a regular need in the kernel to provide a way to declare having a
dynamically sized set of trailing elements in a structure. Kernel code should
always use “flexible array members”[1] for these cases. The older style of
one-element or zero-length arrays should no longer be used[2].[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://github.com/KSPP/linux/issues/21Signed-off-by: Gustavo A. R. Silva
30 Jul, 2019
1 commit
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Introduce wrappers for {bus/driver/class}_find_device() to
locate devices by its of_node.Cc: Maarten Lankhorst
Cc: Maxime Ripard
Cc: dri-devel@lists.freedesktop.org
Cc: David Airlie
Cc: Daniel Vetter
Cc: devicetree@vger.kernel.org
Cc: Florian Fainelli
Cc: Frank Rowand
Cc: Heiko Stuebner
Cc: Liam Girdwood
Cc: linux-i2c@vger.kernel.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-spi@vger.kernel.org
Cc: Mathieu Poirier
Cc: Rob Herring
Cc: Srinivas Kandagatla
Cc: Takashi Iwai
Cc: Alan Tull
Cc: linux-fpga@vger.kernel.org
Cc: Peter Rosin
Cc: Florian Fainelli
Cc: Heiner Kallweit
Cc: "David S. Miller"
Cc: Andrew Lunn
Cc: Liam Girdwood
Cc: "Rafael J. Wysocki"
Cc: Thor Thayer
Cc: Jiri Slaby
Cc: Andrew Lunn
Cc: Peter Rosin
Signed-off-by: Suzuki K Poulose
Acked-by: Lee Jones
Acked-by: Wolfram Sang # I2C part
Acked-by: Moritz Fischer # For FPGA part
Acked-by: Mark Brown
Link: https://lore.kernel.org/r/20190723221838.12024-3-suzuki.poulose@arm.com
Signed-off-by: Greg Kroah-Hartman
13 Jul, 2019
1 commit
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Pull driver core and debugfs updates from Greg KH:
"Here is the "big" driver core and debugfs changes for 5.3-rc1It's a lot of different patches, all across the tree due to some api
changes and lots of debugfs cleanups.Other than the debugfs cleanups, in this set of changes we have:
- bus iteration function cleanups
- scripts/get_abi.pl tool to display and parse Documentation/ABI
entries in a simple way- cleanups to Documenatation/ABI/ entries to make them parse easier
due to typos and other minor things- default_attrs use for some ktype users
- driver model documentation file conversions to .rst
- compressed firmware file loading
- deferred probe fixes
All of these have been in linux-next for a while, with a bunch of
merge issues that Stephen has been patient with me for"* tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (102 commits)
debugfs: make error message a bit more verbose
orangefs: fix build warning from debugfs cleanup patch
ubifs: fix build warning after debugfs cleanup patch
driver: core: Allow subsystems to continue deferring probe
drivers: base: cacheinfo: Ensure cpu hotplug work is done before Intel RDT
arch_topology: Remove error messages on out-of-memory conditions
lib: notifier-error-inject: no need to check return value of debugfs_create functions
swiotlb: no need to check return value of debugfs_create functions
ceph: no need to check return value of debugfs_create functions
sunrpc: no need to check return value of debugfs_create functions
ubifs: no need to check return value of debugfs_create functions
orangefs: no need to check return value of debugfs_create functions
nfsd: no need to check return value of debugfs_create functions
lib: 842: no need to check return value of debugfs_create functions
debugfs: provide pr_fmt() macro
debugfs: log errors when something goes wrong
drivers: s390/cio: Fix compilation warning about const qualifiers
drivers: Add generic helper to match by of_node
driver_find_device: Unify the match function with class_find_device()
bus_find_device: Unify the match callback with class_find_device
...
24 Jun, 2019
1 commit
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The driver_find_device() accepts a match function pointer to
filter the devices for lookup, similar to bus/class_find_device().
However, there is a minor difference in the prototype for the
match parameter for driver_find_device() with the now unified
version accepted by {bus/class}_find_device(), where it doesn't
accept a "const" qualifier for the data argument. This prevents
us from reusing the generic match functions for driver_find_device().For this reason, change the prototype of the driver_find_device() to
make the "match" parameter in line with {bus/class}_find_device()
and adjust its callers to use the const qualifier. Also, we could
now promote the "data" parameter to const as we pass it down
as a const parameter to the match functions.Cc: Corey Minyard
Cc: Russell King
Cc: Thierry Reding
Cc: Greg Kroah-Hartman
Cc: "Rafael J. Wysocki"
Cc: Will Deacon
Cc: Joerg Roedel
Cc: Peter Oberparleiter
Cc: Sebastian Ott
Cc: David Airlie
Cc: Daniel Vetter
Cc: Nehal Shah
Cc: Shyam Sundar S K
Cc: Lee Jones
Cc: Christian Borntraeger
Signed-off-by: Suzuki K Poulose
Signed-off-by: Greg Kroah-Hartman
05 Jun, 2019
1 commit
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Based on 1 normalized pattern(s):
this software is licensed under the terms of the gnu general public
license version 2 as published by the free software foundation and
may be copied distributed and modified under those terms this
program is distributed in the hope that it will be useful but
without any warranty without even the implied warranty of
merchantability or fitness for a particular purpose see the gnu
general public license for more detailsextracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 285 file(s).
Signed-off-by: Thomas Gleixner
Reviewed-by: Alexios Zavras
Reviewed-by: Allison Randal
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de
Signed-off-by: Greg Kroah-Hartman
08 May, 2019
1 commit
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clang warns about an unused variable when CONFIG_PM is disabled, since
it is only referenced from an #ifdef:drivers/amba/tegra-ahb.c:97:18: error: variable 'tegra_ahb_gizmo' is not needed and will not be emitted [-Werror,-Wunneeded-internal-declaration]
Rather than trying to get the #ifdef right, remove it and use
__maybe_unused here, which is less error prone.Signed-off-by: Arnd Bergmann
Signed-off-by: Thierry Reding
02 Apr, 2015
2 commits
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amba: tegra-ahb: detect and correct bogus base address
From a hardware SoC integration point of view, the starting address of
this IP block in the existing Tegra SoC DT files is off by 4 bytes
from the actual base address. Since we attempt to make old DT files
forward-compatible with newer kernels, we cannot fix the IP block base
address in old DT data. This patch works around the problem by
detecting the four byte base address offset in the driver code, and
correcting it if it's detected. (In general, IP block base addresses
almost always have a null low byte.)Future SoC DT data for Tegra AHB should use the correct Tegra AHB base
address, in cases where there is no DT data backward compatibility
requirement.This patch is a revision of the patch originally titled
"amba: tegra-ahb: use correct base address for future chip support".
This revision implements changes requested by Russell King:http://marc.info/?l=linux-tegra&m=142658851825062&w=2
http://marc.info/?l=linux-tegra&m=142658873925178&w=2Signed-off-by: Paul Walmsley
Cc: Paul Walmsley
Cc: Alexandre Courbot
Cc: Hiroshi DOYU
Cc: Stephen Warren
Cc: Thierry Reding
Cc: linux-kernel@vger.kernel.org
Acked-by: Stephen Warren
Signed-off-by: Russell King -
amba: tegra-ahb: fix register offsets in the macros
From a hardware SoC integration point of view, the offsets of the
Tegra AHB registers that are currently defined in tegra-ahb.c macros
are all off by four bytes. Similarly, the starting address of this IP
block in our existing DT files is also off by four bytes. Since we
attempt to make old DT files forward-compatible with newer kernels, we
cannot fix the IP block base address in old DT data. However, we can
fix the offsets in the driver so that they are correct with respect to
the hardware, which is what this patch does. And a subsequent patch
will allow the offset to be removed for DT 'compatible' strings used
in future DT files for newer Tegra chips that the kernel does not yet
support.Signed-off-by: Paul Walmsley
Cc: Paul Walmsley
Cc: Alexandre Courbot
Cc: Hiroshi DOYU
Cc: Stephen Warren
Cc: Thierry Reding
Cc: linux-kernel@vger.kernel.org
Acked-by: Stephen Warren
Signed-off-by: Russell King
20 Oct, 2014
1 commit
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A platform_driver does not need to set an owner, it will be populated by the
driver core.Signed-off-by: Wolfram Sang
17 Jul, 2014
1 commit
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In order to not clutter the include/linux directory with SoC specific
headers, move the Tegra-specific headers out into a separate directory.Signed-off-by: Thierry Reding
06 Feb, 2014
1 commit
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devm_ioremap_resource does sanity checks on the given resource. No need to
duplicate this in the driver.Signed-off-by: Wolfram Sang
Reviewed-by: Thierry Reding
Signed-off-by: Stephen Warren
16 Mar, 2013
1 commit
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Make this depend on CONFIG_PM. This protection is necessary to not
cause any build errors with any combination of PM features especially
when supporting a new SoC where each PM features are being enabled
one-by-one during its depelopment.Signed-off-by: Hiroshi Doyu
Signed-off-by: Russell King
04 Mar, 2013
1 commit
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Pull late ARM updates from Russell King:
"Here is the late set of ARM updates for this merge window; in here is:- The ARM parts of the broadcast timer support, core parts merged
through tglx's tree. This was left over from the previous merge to
allow the dependency on tglx's tree to be resolved.- A fix to the VFP code which shows up on Raspberry Pi's, as well as
fixing the fallout from a previous commit in this area.- A number of smaller fixes scattered throughout the ARM tree"
* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm:
ARM: Fix broken commit 0cc41e4a21d43 corrupting kernel messages
ARM: fix scheduling while atomic warning in alignment handling code
ARM: VFP: fix emulation of second VFP instruction
ARM: 7656/1: uImage: Error out on build of multiplatform without LOADADDR
ARM: 7640/1: memory: tegra_ahb_enable_smmu() depends on TEGRA_IOMMU_SMMU
ARM: 7654/1: Preserve L_PTE_VALID in pte_modify()
ARM: 7653/2: do not scale loops_per_jiffy when using a constant delay clock
ARM: 7651/1: remove unused smp_timer_broadcast #define
21 Feb, 2013
1 commit
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New SoC, Tegra114 also uses SMMU. Change tegra_ahb_enable_smmu()'s
dependency from ARCH_TEGRA_3x_SOC to TEGRA_IOMMU_SMMU. No need to edit
whenever a new Tegra SoC comes.The following combination caused build error, which this patch fixes.
CONFIG_ARCH_TEGRA_2x_SOC=y
CONFIG_ARCH_TEGRA_114_SOC=ydrivers/iommu/tegra-smmu.c:485: undefined reference to gra_ahb_enable_smmu'
Signed-off-by: Hiroshi Doyu
Tested-by: Stephen Warren
Signed-off-by: Russell King
26 Jan, 2013
1 commit
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Convert all uses of devm_request_and_ioremap() to the newly introduced
devm_ioremap_resource() which provides more consistent error handling.devm_ioremap_resource() provides its own error messages so all explicit
error messages can be removed from the failure code paths.Signed-off-by: Thierry Reding
Cc: Russell King
Signed-off-by: Greg Kroah-Hartman
04 Jan, 2013
1 commit
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CONFIG_HOTPLUG is going away as an option. As a result, the __dev*
markings need to be removed, as well as the use of CONFIG_HOTPLUG.This patch does both, removing the use of CONFIG_HOTPLUG in the
amba/bus.c file, and __devinit and __devinitconst in the tegra-ahb.c
driver.Cc: Bill Pemberton
Cc: Russell King
Signed-off-by: Greg Kroah-Hartman
18 Dec, 2012
1 commit
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…rnel/git/swarren/linux-tegra into fixes
ARM: tegra: fixes for 3.8
This branch contains a few miscellaneous fixes that have shown up in the
last few weeks.By Sivaram Nair (2) and Hiroshi Doyu (1)
via Stephen Warren
* tag 'tegra-for-3.8-fixes-for-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
amba: tegra-ahb: Fix warning w/o PM_SLEEP
ARM: tegra: fix comment in dsib clk set_parent
ARM: tegra: select correct parent clk for pll_pSigned-off-by: Olof Johansson <olof@lixom.net>
27 Nov, 2012
1 commit
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Fix build warning w/o PM_SLEEP.
Signed-off-by: Hiroshi Doyu
Signed-off-by: Stephen Warren
06 Nov, 2012
1 commit
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We wish to empty arch/arm/mach-tegra/include/mach/ as much as possible
to enable single zImage. Move tegra-ahb.h to a more central location
(suggested by Arnd, OK'd by Greg KH), and actually make tegra-ahb.c
include the header to ensure client and provider agree on the prototype.Signed-off-by: Stephen Warren
12 Jun, 2012
1 commit
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Remove unnecessary empty function.
Signed-off-by: Hiroshi DOYU
Signed-off-by: Stephen Warren
09 May, 2012
2 commits
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Add extern func, "tegra_ahb_enable_smmu()" to inform AHB that SMMU is
ready.Signed-off-by: Hiroshi DOYU
Cc: Felipe Balbi
Signed-off-by: Stephen Warren -
Tegra AHB Bus conforms to the AMBA Specification (Rev 2.0) Advanced
High-performance Bus (AHB) architecture.The AHB Arbiter controls AHB bus master arbitration. This effectively
forms a second level of arbitration for access to the memory
controller through the AHB Slave Memory device. The AHB pre-fetch
logic can be configured to enhance performance for devices doing
sequential access. Each AHB master is assigned to either the high or
low priority bin. Both Tegra20/30 have this AHB bus.Some of configuration params could be passed from DT too if needed.
Signed-off-by: Hiroshi DOYU
Acked-by: Arnd Bergmann
Cc: Felipe Balbi
Signed-off-by: Stephen Warren