talos-obmc-linux/drivers/amba, branch dev-4.13

amba: use dev_groups and not dev_attrs for bus_type

2017-06-09T09:00:45+00:00

The dev_attrs field has long been "depreciated" and is finally being removed, so move the driver to use the "correct" dev_groups field instead for struct bus_type. Cc: Russell King Signed-off-by: Greg Kroah-Hartman

ARM: 8596/1: amba: Support clk parents and rates assigned in DT

2016-08-12T15:47:07+00:00

Add the call to of_clk_set_defaults() into the amba probe path so that devices on the amba bus can use the assigned rates and parents feature of the common clock framework. Cc: Michael Turquette Tested-by: Jorge Ramirez Ortiz Signed-off-by: Stephen Boyd Signed-off-by: Russell King

ARM: 8566/1: drivers: amba: properly handle devices with power domains

2016-05-05T18:00:40+00:00

To read pid/cid registers, the probed device need to be properly turned on. When it is inside a power domain, the bus code should ensure that the given power domain is enabled before trying to access device's registers. However in some cases power domain (or clocks) might not be yet available. Returning -EPROBE_DEFER is not a solution in such case, because callers don't handle this special error code. Instead such devices are added to the special list and their registration is retried from periodic worker until all resources are available. Signed-off-by: Marek Szyprowski Signed-off-by: Russell King

amba: Hide TEGRA_AHB symbol

2015-11-24T15:47:25+00:00

The symbol depends on ARCH_TEGRA and will default to y. There are no circumstances under which it is desirable to disable this option. Signed-off-by: Thierry Reding

ARM: 8334/1: amba: tegra-ahb: detect and correct bogus base address

2015-04-02T09:03:55+00:00

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=2 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

ARM: 8333/1: amba: tegra-ahb: fix register offsets in the macros

2015-04-02T09:03:55+00:00

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

ARM: 8256/1: driver coamba: add device binding path 'driver_override'

2015-02-10T10:23:15+00:00

As already demonstrated with PCI [1] and the platform bus [2], a driver_override property in sysfs can be used to bypass the id matching of a device to a AMBA driver. This can be used by VFIO to bind to any AMBA device requested by the user. [1] http://lists-archives.com/linux-kernel/28030441-pci-introduce-new-device-binding-path-using-pci_dev-driver_override.html [2] https://www.redhat.com/archives/libvir-list/2014-April/msg00382.html Signed-off-by: Antonios Motakis Reviewed-by: Kim Phillips Signed-off-by: Russell King

Merge tag 'char-misc-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2014-12-15T00:43:47+00:00

Pull char/misc driver updates from Greg KH: "Here's the big char/misc driver update for 3.19-rc1 Lots of little things all over the place in different drivers, and a new subsystem, "coresight" has been added. Full details are in the shortlog" * tag 'char-misc-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (73 commits) parport: parport_pc, do not remove parent devices early spmi: Remove shutdown/suspend/resume kernel-doc carma-fpga-program: drop videobuf dependency carma-fpga: drop videobuf dependency carma-fpga-program.c: fix compile errors i8k: Fix temperature bug handling in i8k_get_temp() cxl: Name interrupts in /proc/interrupt CXL: Return error to PSL if IRQ demultiplexing fails & print clearer warning coresight-replicator: remove .owner field for driver coresight: fixed comments in coresight.h coresight: fix typo in comment in coresight-priv.h coresight: bindings for coresight drivers coresight: Adding ABI documentation w1: support auto-load of w1_bq27000 module. w1: avoid potential u16 overflow cn: verify msg->len before making callback mei: export fw status registers through sysfs mei: read and print all six FW status registers mei: txe: add cherrytrail device id mei: kill cached host and me csr values ...

Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2014-12-15T00:10:09+00:00

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__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 ...

Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm

2014-12-12T23:26:48+00:00

Pull ARM updates from Russell King: "The major updates included in this update are: - Clang compatible stack pointer accesses by Behan Webster. - SA11x0 updates from Dmitry Eremin-Solenikov. - kgdb handling of breakpoints with read-only text/modules - Support for Privileged-no-execute feature on ARMv7 to prevent userspace code execution by the kernel. - AMBA primecell bus handling of irq-safe runtime PM - Unwinding support for memset/memzero/memmove/memcpy functions - VFP fixes for Krait CPUs and improvements in detecting the VFP architecture - A number of code cleanups (using pr_*, removing or reducing the severity of a couple of kernel messages, splitting ftrace asm code out to a separate file, etc.) - Add machine name to stack dump output" * 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (62 commits) ARM: 8247/2: pcmcia: sa1100: make use of device clock ARM: 8246/2: pcmcia: sa1111: provide device clock ARM: 8245/1: pcmcia: soc-common: enable/disable socket clocks ARM: 8244/1: fbdev: sa1100fb: make use of device clock ARM: 8243/1: sa1100: add a clock alias for sa1111 pcmcia device ARM: 8242/1: sa1100: add cpu clock ARM: 8221/1: PJ4: allow building in Thumb-2 mode ARM: 8234/1: sa1100: reorder IRQ handling code ARM: 8233/1: sa1100: switch to hwirq usage ARM: 8232/1: sa1100: merge GPIO multiplexer IRQ to "normal" irq domain ARM: 8231/1: sa1100: introduce irqdomains support ARM: 8230/1: sa1100: shift IRQs by one ARM: 8229/1: sa1100: replace irq numbers with names in irq driver ARM: 8228/1: sa1100: drop entry-macro.S ARM: 8227/1: sa1100: switch to MULTI_IRQ_HANDLER ARM: 8241/1: Update processor_modes for hyp and monitor mode ARM: 8240/1: MCPM: document mcpm_sync_init() ARM: 8239/1: Introduce {set,clear}_pte_bit ARM: 8238/1: mm: Refine set_memory_* functions ARM: 8237/1: fix flush_pfn_alias ...