Boris Brezillon
3a379bbcea
i3c: Add core I3C infrastructure ...
Add core infrastructure to support I3C in Linux and document it.
This infrastructure adds basic I3C support. Advanced features will be
added afterwards.
There are a few design choices that are worth mentioning because they
impact the way I3C device drivers can interact with their devices:
- all functions used to send I3C/I2C frames must be called in
non-atomic context. Mainly done this way to ease implementation, but
this is not set in stone, and if anyone needs async support, new
functions can be added later on.
- the bus element is a separate object, but it's tightly coupled with
the master object. We thus have a 1:1 relationship between i3c_bus
and i3c_master_controller objects, and if 2 master controllers are
connected to the same bus and both exposed to the same Linux instance
they will appear as two distinct busses, and devices on this bus will
be exposed twice.
- I2C backward compatibility has been designed to be transparent to I2C
drivers and the I2C subsystem. The I3C master just registers an I2C
adapter which creates a new I2C bus. I'd say that, from a
representation PoV it's not ideal because what should appear as a
single I3C bus exposing I3C and I2C devices here appears as 2
different buses connected to each other through the parenting (the
I3C master is the parent of the I2C and I3C busses).
On the other hand, I don't see a better solution if we want something
that is not invasive.
Missing features:
- I3C HDR modes are not supported
- no support for multi-master and the associated concepts (mastership
handover, support for secondary masters, ...)
- I2C devices can only be described using DT because this is the only
use case I have. However, the framework can easily be extended with
ACPI and board info support
- I3C slave framework. This has been completely omitted, but shouldn't
have a huge impact on the I3C framework because I3C slaves don't see
the whole bus, it's only about handling master requests and generating
IBIs. Some of the struct, constant and enum definitions could be
shared, but most of the I3C slave framework logic will be different
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-11-12 10:33:49 +01:00
i40e: Update status codes
2018-10-31 10:57:43 -07:00
libceph: support the RADOS copy-from operation
2018-10-22 10:28:23 +02:00
Merge branch 'clk-ti' into clk-next
2018-10-18 15:41:21 -07:00
fpga: add devm_fpga_region_create
2018-10-16 11:13:50 +02:00
IOMMU Updates for Linux v4.20
2018-10-26 10:50:10 -07:00
This is the bulk of GPIO changes for the v4.20 series:
2018-10-23 08:45:05 +01:00
i3c: Add core I3C infrastructure
2018-11-12 10:33:49 +01:00
KVM updates for v4.20
2018-10-25 17:57:35 -07:00
chrome-platform for v4.20
2018-10-31 16:47:55 -07:00
First merge window pull request
2018-10-26 07:38:19 -07:00
SPI NOR changes:
2018-10-23 01:09:22 +01:00
netfilter: nft_osf: Add ttl option support
2018-10-16 10:01:48 +02:00
USB/PHY patches for 4.20-rc1
2018-10-26 08:14:13 -07:00
platform-drivers-x86 for v4.20-1
2018-11-01 08:42:21 -07:00
First merge window pull request
2018-10-26 07:38:19 -07:00
More power management updates for 4.20-rc1
2018-10-30 09:08:07 -07:00
Merge remote-tracking branch 'spi/topic/of' into spi-next
2018-10-21 17:00:17 +01:00
NFS client bugfixes for Linux 4.20
2018-11-04 08:20:09 -08:00
USB/PHY patches for 4.20-rc1
2018-10-26 08:14:13 -07:00
pci-v4.20-changes
2018-10-25 06:50:48 -07:00
EDAC, skx: Fix randconfig builds
2018-10-31 19:24:21 +01:00
blkcg: revert blkcg cleanups series
2018-11-01 19:59:53 -06:00
linux/bitmap.h: relax comment on compile-time constant nbits
2018-10-31 08:54:12 -07:00
blkcg: revert blkcg cleanups series
2018-11-01 19:59:53 -06:00
blkcg: revert blkcg cleanups series
2018-11-01 19:59:53 -06:00
block: Introduce blk_revalidate_disk_zones()
2018-10-25 11:17:40 -06:00
bpf: add queue and stack maps
2018-10-19 13:24:31 -07:00
bpf: add queue and stack maps
2018-10-19 13:24:31 -07:00
bpf: fix partial copy of map_ptr when dst is scalar
2018-10-31 16:53:17 -07:00
psi: cgroup support
2018-10-26 16:26:32 -07:00
for-linus-20181102
2018-11-02 11:25:48 -07:00
Merge branches 'clk-tegra' and 'clk-bulk-get-all' into clk-next
2018-10-18 15:43:38 -07:00
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-10-25 11:14:36 -07:00
Merge branch 'core/urgent' into x86/urgent, to pick up objtool fix
2018-11-03 23:42:16 +01:00
The Compiler Attributes series
2018-11-01 18:34:46 -07:00
The Compiler Attributes series
2018-11-01 18:34:46 -07:00
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2018-10-25 16:43:35 -07:00
clocksource/drivers/c-sky: Add C-SKY SMP timer
2018-11-02 19:39:54 +01:00
locking/lockdep: Make global debug_locks* variables read-mostly
2018-10-19 07:53:18 +02:00
delayacct: track delays from thrashing cache pages
2018-10-26 16:26:32 -07:00
- Biggest change this cycle is to remove support for the legacy IO path
2018-10-26 12:57:38 -07:00
Driver core patches for 4.20-rc1
2018-10-26 08:42:25 -07:00
swiotlb: remove the overflow buffer
2018-10-19 08:43:46 +02:00
f2fs: guarantee journalled quota data by checkpoint
2018-10-22 17:54:47 -07:00
bpf: add bpf_jit_limit knob to restrict unpriv allocations
2018-10-25 17:11:42 -07:00
vfs: rework data cloning infrastructure
2018-11-02 09:33:08 -07:00
mm, thp: consolidate THP gfp handling into alloc_hugepage_direct_gfpmask
2018-11-03 10:09:37 -07:00
Merge branch 'for-4.20/logitech-highres' into for-linus
2018-10-23 13:35:22 +02:00
mm/hmm: use a structure for update callback parameters
2018-10-31 08:54:12 -07:00
mm/gup: cache dev_pagemap while pinning pages
2018-10-26 16:38:15 -07:00
ida: Convert to XArray
2018-10-21 10:46:33 -04:00
ipv4/igmp: fix v1/v2 switchback timeout based on rfc3376, 8.12
2018-10-29 20:26:06 -07:00
fs/iomap.c: change return type to vm_fault_t
2018-10-26 16:25:18 -07:00
KEYS: Provide key type operations for asymmetric key ops [ver #2 ]
2018-10-26 09:30:46 +01:00
KEYS: Provide key type operations for asymmetric key ops [ver #2 ]
2018-10-26 09:30:46 +01:00
include/linux/linkage.h: align weak symbols
2018-10-26 16:25:18 -07:00
Merge branch 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2018-10-24 11:49:35 +01:00
mm: don't miss the last page because of round-off error
2018-10-26 16:25:19 -07:00
memblock: stop using implicit alignment to SMP_CACHE_BYTES
2018-10-31 08:54:16 -07:00
mm/memcontrol.c: convert mem_cgroup_id::ref to refcount_t type
2018-10-26 16:26:35 -07:00
mm/memory_hotplug: make add_memory() take the device_hotplug_lock
2018-10-31 08:54:17 -07:00
mm, thp: consolidate THP gfp handling into alloc_hugepage_direct_gfpmask
2018-11-03 10:09:37 -07:00
PCI/P2PDMA: Add PCI p2pmem DMA mappings to adjust the bus offset
2018-10-17 12:18:16 -05:00
net: phy: micrel: add Microchip KSZ9131 initial driver
2018-10-19 17:02:23 -07:00
mm: remove CONFIG_HAVE_MEMBLOCK
2018-10-31 08:54:15 -07:00
Revert "mm, mmu_notifier: annotate mmu notifiers with blockable invalidate callbacks"
2018-10-26 16:25:19 -07:00
mm: remove CONFIG_NO_BOOTMEM
2018-10-31 08:54:14 -07:00
i3c: Add core I3C infrastructure
2018-11-12 10:33:49 +01:00
Merge branch 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2018-10-24 11:49:35 +01:00
net: Plumb support for filtering ipv4 and ipv6 multicast route dumps
2018-10-16 00:13:39 -07:00
UAPI: ndctl: Remove use of PAGE_SIZE
2018-10-17 13:56:58 -07:00
netlink: Add answer_flags to netlink_callback
2018-10-16 00:13:12 -07:00
netpoll: allow cleanup to be synchronous
2018-10-19 17:01:43 -07:00
include/linux/notifier.h: SRCU: fix ctags
2018-11-03 10:09:37 -07:00
TTY/Serial patches for 4.20-rc1
2018-10-29 10:42:20 -07:00
mm: create non-atomic version of SetPageReserved for init use
2018-10-26 16:26:34 -07:00
page cache: Convert find_get_entries_tag to XArray
2018-10-21 10:46:35 -04:00
pagevec: Use xa_mark_t
2018-10-21 10:46:39 -04:00
PCI/P2PDMA: Introduce configfs/sysfs enable attribute helpers
2018-10-17 12:18:17 -05:00
pci-v4.20-changes
2018-10-25 06:50:48 -07:00
pci-v4.20-changes
2018-10-25 06:50:48 -07:00
percpu: remove PER_CPU_DEF_ATTRIBUTES macro
2018-10-31 08:54:14 -07:00
mm: dax: add comment for PFN_SPECIAL
2018-10-26 16:26:35 -07:00
PM / Domains: Document flags for genpd
2018-10-18 12:25:10 +02:00
psi: cgroup support
2018-10-26 16:26:32 -07:00
psi: pressure stall information for CPU, memory, and IO
2018-10-26 16:26:32 -07:00
pstore/ram: Clarify resource reservation labels
2018-10-22 07:11:58 -07:00
Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2018-10-24 11:22:39 +01:00
radix tree: Remove multiorder support
2018-10-21 10:46:48 -04:00
lib/rbtree.c: fix typo in comment of rb_insert_augmented()
2018-10-31 08:54:13 -07:00
Merge remote-tracking branches 'regmap/topic/noinc' and 'regmap/topic/single-rw' into regmap-next
2018-10-21 12:07:26 +01:00
remoteproc: Add mechanism for custom dump function assignment
2018-10-19 12:53:55 -07:00
New gcc plugin: stackleak
2018-11-01 11:46:27 -07:00
include/linux/signal.h: mark expected switch fall-throughs
2018-10-31 08:54:14 -07:00
net: skbuff.h: Mark expected switch fall-throughs
2018-10-17 22:31:30 -07:00
bpf: sk_msg program helper bpf_msg_push_data
2018-10-20 21:37:11 +02:00
mm, slab/slub: introduce kmalloc-reclaimable caches
2018-10-26 16:26:31 -07:00
Merge branch 'xarray' of git://git.infradead.org/users/willy/linux-dax
2018-10-28 11:35:40 -07:00
swiotlb: don't dip into swiotlb pool for coherent allocations
2018-10-19 08:48:28 +02:00
tcp: do not change tcp_wstamp_ns in tcp_mstamp_refresh
2018-10-15 22:56:41 -07:00
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-10-25 11:14:36 -07:00
tracepoint: Fix tracepoint array element size mismatch
2018-10-17 15:35:29 -04:00
tracepoint: Fix tracepoint array element size mismatch
2018-10-17 15:35:29 -04:00
iov_iter: Add I/O discard iterator
2018-10-24 00:41:07 +01:00
umh: Add command line to user mode helpers
2018-10-22 19:37:36 -07:00
blkcg: revert blkcg cleanups series
2018-11-01 19:59:53 -06:00
xarray: Add range store functionality
2018-10-21 10:46:46 -04:00
