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* w1: Add subsystem kernel public interfaceAndrew F. Davis2017-06-091-336/+0
| | | | | | | | | | | | | | | | | | | | Like other subsystems we should be able to define slave devices outside of the w1 directory. To do this we move public facing interface definitions to include/linux/w1.h and rename the internal definition file to w1_internal.h. As w1_family.h and w1_int.h contained almost entirely public driver interface definitions we simply removed these files and moved the remaining definitions into w1_internal.h. With this we can now start to move slave devices out of w1/slaves and into the subsystem based on the function they implement, again like other drivers. Signed-off-by: Andrew F. Davis <afd@ti.com> Reviewed-by: Sebastian Reichel <sre@kernel.org> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: Fixup source file headersAndrew F. Davis2017-01-251-7/+0
| | | | | | | | | | | Remove filename from file, this is not done anymore as it doesn't add anything and usually is incorrect as filename change often. Also shorten the GPL to the more common address-less version and remove excess white-space. Signed-off-by: Andrew F. Davis <afd@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: add ability to set (SRAM) and store (EEPROM) configuration for temp ↵Ben Sen2016-05-011-0/+2
| | | | | | | | | | | | | | sensors like DS18B20 Since many temperature sensors come "preconfigured" with a lower precision, people are stuck at that precision when running on a kernel based device (unlike the Dallas 1Wire library for e.g. Arduino, which supports writing the configuration/scratchpad). This patch adds write support for the scratchpad/precision registers via w1_slave sysfs. Signed-off-by: Ben Sen <0.x29a.0@gmail.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: optional bundling of netlink kernel repliesDavid Fries2014-05-271-8/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Applications can submit a set of commands in one packet to the kernel, and in some cases it is required such as reading the temperature sensor results. This adds an option W1_CN_BUNDLE to the flags of cn_msg to request the kernel to reply in one packet for efficiency. The cn_msg flags now check for unknown flag values and return an error if one is seen. See "Proper handling of unknown flags in system calls" http://lwn.net/Articles/588444/ This corrects the ack values returned as per the protocol standard, namely the original ack for status messages and seq + 1 for all others such as the data returned from a read. Some of the common variable names have been standardized as follows. struct cn_msg *cn struct w1_netlink_msg *msg struct w1_netlink_cmd *cmd struct w1_master *dev When an argument and a function scope variable would collide, add req_ to the argument. Signed-off-by: David Fries <David@Fries.net> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: format for DocBook and fixesDavid Fries2014-02-071-43/+93
| | | | | | | | | Switch the code documentation format style to DocBook format, enable DocBook documentation generation, and fix some comments. Signed-off-by: David Fries <David@Fries.net> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: use family_data instead of rom in w1_slaveDavid Fries2014-02-071-1/+0
| | | | | | | | | | | | | | The first line printed from w1_slave gives the context of the w1 device. So does the second line, but if the CRC check failed, the second line contains the last successful result. It is confusing when it prints the temperature next to the line that might be a previous conversion and has nothing to do with that printed temperature value. Modify the code to store the last good conversion in family_data, which is designed for custom data structures. Signed-off-by: David Fries <David@Fries.net> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: reply only to the requester portidDavid Fries2014-02-071-0/+5
| | | | | | | | | | | | Unicast one wire replies back to the sender portid to avoid multiple programs getting each other's messages, especially as the response can't be uniquely identified with the sequence coming from the requesting program when both programs generate the same id. Continue to broadcast events such as add/remove master/slave devices. Signed-off-by: David Fries <David@Fries.net> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: process w1 netlink commands in w1_process threadDavid Fries2014-02-071-2/+30
| | | | | | | | | | | Netlink is a socket interface and is expected to be asynchronous. Clients can now make w1 requests without blocking by making use of the w1_master thread to process netlink commands which was previously only used for doing an automatic bus search. Signed-off-by: David Fries <David@Fries.net> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: new netlink commands, add/remove/list slavesDavid Fries2014-02-071-0/+3
| | | | | | | | | | | | | | | Introduce new commands to add, remove, and list slave devices through the netlink interface. This can be useful to skip the search on a static network. They could previously only be added or removed through automatic search or sysfs, and this allows a program to only use netlink. Only allocate memory when needed, so move kzalloc into w1_get_slaves where it was used. Signed-off-by: David Fries <David@Fries.net> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: continue slave search where previous left offDavid Fries2014-02-071-0/+3
| | | | | | | | | Search will detect at most max_slave_count devices per run, if there are more pick up the next search where the previous left off. Signed-off-by: David Fries <David@Fries.net> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: increase w1_max_slave_count, allow write accessDavid Fries2014-02-071-0/+2
| | | | | | | | | | | | | | w1_max_slave_count is only used to abort the search early or take a fast search (when 1), so there isn't any reason to not allow it to be updated through sysfs. Memory is not allocated based on the current value and 10 is a rather low base number, increasing to 64, and printing a message the first time the count is reached and there were more devices to discover to let the user know why not all the devices were found. Signed-off-by: David Fries <David@Fries.net> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: fixup search to support abort from netlinkDavid Fries2014-02-071-0/+10
| | | | | | | | | | | | | | | | | | | | | Before 63706172f33 "rework kthread_stop()" kthread_should_stop() always returned false when called from a non-kthread task, after it would oops as a non-kthread didn't have that structure and netlink was calling search from a thread which wasn't a kthread. 9d1817cab2f030 "w1: fix oops when w1_search is called from netlink connector", modified the code to avoid calling kthread_stop from a netlink thread. Introduce a w1_master flag and bit W1_ABORT_SEARCH to identify abort to cleanly support both kthread and netlink search abort. A search can take seconds to run, so it is important to abort early if the hardware is removed in the middle of a search. Signed-off-by: David Fries <David@Fries.net> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Cc: Marcin Jurkowski <marcin1j@gmail.com> Cc: Josh Boyer <jwboyer@gmail.com> Cc: Sven Geggus <lists@fuchsschwanzdomain.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* drivers: w1: make w1_slave::flags long to avoid memory corruptionMichal Nazarewicz2013-11-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | On architectures where long is more then 32 bits, modifying a 32-bit field with set_bit (and other atomic bit operations) may cause bytes following the field to by modified. Because the endianness of the bits within a field is the native endianness of the CPU[1], on big-endian machines, bit number zero is in the last byte of the field. Therefore, `set_bit(0, ptr)' on a 64-bit big-endian machine is roughly equivalent to `((char *)ptr)[7] |= 1', and since w1 driver uses a 32-bit field for holding the flags, this causes bytes beyond the field to be modified. [1] From Documentation/atomic_ops.txt: Native atomic bit operations are defined to operate on objects aligned to the size of an "unsigned long" C data type, and are least of that size. The endianness of the bits within each "unsigned long" are the native endianness of the cpu. Signed-off-by: Michal Nazarewicz <mina86@mina86.com> Cc: Evgeniy Polyakov <zbr@ioremap.net> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* W1: split master mutex to avoid deadlocks.NeilBrown2012-06-131-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The 'mutex' in struct w1_master is use for two very different purposes. Firstly it protects various data structures such as the list of all slaves. Secondly it protects the w1 buss against concurrent accesses. This can lead to deadlocks when the ->probe code called while adding a slave needs to talk on the bus, as is the case for power_supply devices. ds2780 and ds2781 drivers contain a work around to track which process hold the lock simply to avoid this deadlock. bq27000 doesn't have that work around and so deadlocks. There are other possible deadlocks involving sysfs. When removing a device the sysfs s_active lock is held, so the lock that protects the slave list must take precedence over s_active. However when access power_supply attributes via sysfs, the s_active lock must take precedence over the lock that protects accesses to the bus. So to avoid deadlocks between w1 slaves and sysfs, these must be two separate locks. Making them separate means that the work around in ds2780 and ds2781 can be removed. So this patch: - adds a new mutex: "bus_mutex" which serialises access to the bus. - takes in mutex in w1_search and ds1wm_search while they access the bus for searching. The mutex is dropped before calling the callback which adds the slave. - changes all slaves to use bus_mutex instead of mutex to protect access to the bus - removes w1_ds2790_io_nolock and w1_ds2781_io_nolock, and the related code from drivers/power/ds278[01]_battery.c which calls them. Signed-off-by: NeilBrown <neilb@suse.de> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Revert "w1: introduce a slave mutex for serializing IO"Greg Kroah-Hartman2012-06-131-1/+0
| | | | | | | | | | | | This reverts commit 59d4467be405316916a4087d5b02d99196eeef04. Turns out it was the wrong version, will apply the correct version after this. Reported-by: NeilBrown <neilb@suse.de> Cc: Evgeniy Polyakov <zbr@ioremap.net> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: introduce a slave mutex for serializing IONeilBrown2012-06-121-0/+1
| | | | | | | | | | | | | | | | | | | | w1 devices need a mutex to serial IO. Most use master->mutex. However that is used for other purposes and they can conflict. In particular master->mutex is held while w1_attach_slave_device is called. For bq27000, this registers a 'powersupply' device which tries to read the current status. The attempt to read will cause a deadlock on master->mutex. So create a new per-slave mutex and use that for serializing IO for bq27000. Signed-off-by: NeilBrown <neilb@suse.de> Cc: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* MAINTAINERS: Evgeniy has movedEvgeniy Polyakov2011-08-251-1/+1
| | | | | | Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* w1: have netlink search update kernel listDavid Fries2011-05-261-1/+3
| | | | | | | | | | | | Reorganize so the netlink connector one wire search command will update the kernel list of detected slave devices. Otherwise, a newly detected device is unusable because unless it's in the kernel list of known devices any commands will result in ENODEV status. Signed-off-by: David Fries <David@Fries.net> Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* w1: add 1-wire (w1) reset and resume command API supportJean-François Dagenais2011-05-261-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The first patch adds generic functionnality to w1_io for Resume Command [A5h] lots of slaves support. I found it useful for multi-commands/reset workflows with the same slave on a multi-slave bus. This DS2408 w1 slave driver is not complete for all the features of the chip, but its sufficient if you use it as a simple IO expander. Enjoy! The ds1wm had Kconfig dependencies towards ARM && HAVE_CLK. I took them out since I was using the ds1wm on an x86_64 platform (ds1wm in a FPGA through pcie) and found them irrelevant. The clock freq/divisors at the top of ds1wm.c did not have the MSB set to 1. This bit is CLK_EN which turns the whole prescaler and dividers on. The driver never mentionned this bit either, so I just included this bit right in the table entries. I also took the liberty to add a couple of entries to the table. The spec doesn't explicitely mentions these possibilities but the description and examination of the core shows the prescalers & dividers can be used for more than the table explicitely shows. The table I enlarged still doesn't cover all possibilities, but it's a good start. I also made a few tweaks to a couple of the read and write algorithms which made sense while I had my head very deep in the ds1wm documentation. We stressed it a lot with 10+ slaves on the bus, many ds2408, ds2431 and ds2433 at the same time doing extensive interaction. It proved quite stable in our production environment. This patch: Add generic functionnality to w1_io for Resume Command [A5h] lots of slaves support. Signed-off-by: Jean-François Dagenais <dagenaisj@sonatest.com> Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu> Cc: Matt Reimer <mreimer@vpop.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* w1: add touch block commandEvgeniy Polyakov2009-01-081-0/+1
| | | | | | | | Writes and returns sampled data back to userspace. Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* w1: export w1_read_8 functionMadhusudhan Chikkature2008-11-121-0/+1
| | | | | | | | | | | Export the w1_read_8 function for use of drivers. The OMAP HDQ driver(drivers/w1/masters/omap_hdq.c) uses this function. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Madhusudhan Chikkature<madhu.cr@ti.com> Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* W1: w1_therm fix user buffer overflow and catDavid Fries2008-10-161-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixed data reading bug by replacing binary attribute with device one. Switching the sysfs read from bin_attribute to device_attribute. The data is far under PAGE_SIZE so the binary interface isn't required. As the device_attribute interface will make one call to w1_therm_read per file open and buffer, the result is, the following problems go away. buffer overflow: Execute a short read on w1_slave and w1_therm_read_bin would still return the full string size worth of data clobbering the user space buffer when it returned. Switching to device_attribute avoids the buffer overflow problems. With the snprintf formatted output dealing with short reads without doing a conversion per read would have been difficult. bad behavior: `cat w1_slave` would cause two temperature conversions to take place. Previously the code assumed W1_SLAVE_DATA_SIZE would be returned with each read. It would not return 0 unless the offset was less than W1_SLAVE_DATA_SIZE. The result was the first read did a temperature conversion, filled the buffer and returned, the offset in the second read would be less than W1_SLAVE_DATA_SIZE and also fill the buffer and return, the third read would finnally have a big enough offset to return 0 and cause cat to stop. Now w1_therm_read will be called at most once per open. Signed-off-by: David Fries <david@fries.net> Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* W1: feature, enable hardware strong pullupDavid Fries2008-10-161-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a strong pullup option to the w1 system. This supplies extra power for parasite powered devices. There is a w1_master_pullup sysfs entry and enable_pullup module parameter to enable or disable the strong pullup. The one wire bus requires at a minimum one wire and ground. The common wire is used for sending and receiving data as well as supplying power to devices that are parasite powered of which temperature sensors can be one example. The bus must be idle and left high while a temperature conversion is in progress, in addition the normal pullup resister on larger networks or even higher temperatures might not supply enough power. The pullup resister can't provide too much pullup current, because devices need to pull the bus down to write a value. This enables the strong pullup for supported hardware, which can supply more current when requested. Unsupported hardware will just delay with the bus high. The hardware USB 2490 one wire bus master has a bit on some commands which will enable the strong pullup as soon as the command finishes executing. To use strong pullup, call the new w1_next_pullup function to register the duration. The next write command will call set_pullup before sending the data, and reset the duration to zero once it returns. Switched from simple_strtol to strict_strtol. Signed-off-by: David Fries <david@fries.net> Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* W1: w1_process, block or sleepDavid Fries2008-10-161-4/+0
| | | | | | | | | | | | | | | | The w1_process thread's sleeping and termination has been modified. msleep_interruptible was replaced by schedule_timeout and schedule to allow for kthread_stop and wake_up_process to interrupt the sleep and the unbounded sleeping when a bus search is disabled. The W1_MASTER_NEED_EXIT and flags variable were removed as they were redundant with kthread_should_stop and kthread_stop. If w1_process is sleeping, requesting a search will immediately wake it up rather than waiting for the end of msleep_interruptible previously. Signed-off-by: David Fries <david@fries.net> Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* W1: fix deadlocks and remove w1_control_threadDavid Fries2008-10-161-4/+15
| | | | | | | | | | | | | | | | | | | | | | | w1_control_thread was removed which would wake up every second and process newly registered family codes and complete some final cleanup for a removed master. Those routines were moved to the threads that were previously requesting those operations. A new function w1_reconnect_slaves takes care of reconnecting existing slave devices when a new family code is registered or removed. The removal case was missing and would cause a deadlock waiting for the family code reference count to decrease, which will now happen. A problem with registering a family code was fixed. A slave device would be unattached if it wasn't yet claimed, then attached at the end of the list, two unclaimed slaves would cause an infinite loop. The struct w1_bus_master.search now takes a pointer to the struct w1_master device to avoid searching for it, which would have caused a lock ordering deadlock with the removal of w1_control_thread. Signed-off-by: David Fries <david@fries.net> Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] drivers/w1/w1.c: fix a compile errorAdrian Bunk2006-06-221-1/+0
| | | | | | | | | | | | From: Adrian Bunk <bunk@stusta.de> drivers/w1/w1.c:197: error: static declaration of 'w1_bus_type' follows non-static declaration drivers/w1/w1.h:217: error: previous declaration of 'w1_bus_type' was here Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] W1: possible cleanupsEvgeniy Polyakov2006-06-221-3/+0
| | | | | | | | | | | | | | | | | | | | | This patch contains the following possible cleanups: - the following file did't #include the header with the prototypes for it's global functions: - w1_int.c - #if 0 the following unused global function: - w1_family.c: w1_family_get() - make the following needlessly global functions static: - w1_family.c: __w1_family_put() - w1_io.c: w1_delay() - w1_io.c: w1_touch_bit() - w1_io.c: w1_read_8() - remove the following unused EXPORT_SYMBOL's: - w1_family.c: w1_family_put - w1_family.c: w1_family_registered Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] W1: cleanupsEvgeniy Polyakov2006-06-221-0/+10
| | | | | | | | | | Nice cleanup spotted by Adrian Bunk, which was lost due to moving to the completely new functionality. Shame-shame-shame on me. Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] w1: Use mutexes instead of semaphores.Evgeniy Polyakov2006-06-221-3/+2
| | | | | | | | Use mutexes instead of semaphores. Patch tested on x86_64 and i386 with test bus master driver. Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] w1: Userspace communication protocol over connector.Evgeniy Polyakov2006-06-221-18/+20
| | | | | | | | | | | There are three types of messages between w1 core and userspace: 1. Events. They are generated each time new master or slave device found either due to automatic or requested search. 2. Userspace commands. Includes read/write and search/alarm search comamnds. 3. Replies to userspace commands. From: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] w1: Added default generic read/write operations.Evgeniy Polyakov2006-06-221-1/+1
| | | | | | | | | | | | | | | | | | | | | Special file in each w1 slave device's directory called "rw" is created each time new slave and no appropriate w1 family is registered. "rw" file supports read and write operations, which allows to perform almost any kind of operations. Each logical operation is a transaction in nature, which can contain several (two or one) low-level operations. Let's see how one can read EEPROM context: 1. one must write control buffer, i.e. buffer containing command byte and two byte address. At this step bus is reset and appropriate device is selected using either W1_SKIP_ROM or W1_MATCH_ROM command. Then provided control buffer is being written to the wire. 2. reading. This will issue reading eeprom response. It is possible that between 1. and 2. w1 master thread will reset bus for searching and slave device will be even removed, but in this case 0xff will be read, since no device was selected. Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] w1: use kthread api.Evgeniy Polyakov2006-03-231-2/+1
| | | | | | | | | This patch removes old-style kernel thread initialization and changes w1 to use kthread api. It is based on Christoph Hellwig <hch@lst.de> work. Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] w1: misc cleanupsAdrian Bunk2006-03-231-0/+10
| | | | | | | | | | | | This patch contains the following cleanups: - make needlessly global code static - declarations for global code belong into header files - w1.c: #if 0 the unused struct w1_slave_device Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] W1: Change the type 'unsigned long' member of 'struct w1_bus_master' ↵Evgeniy Polyakov2006-03-231-12/+12
| | | | | | | | to 'void *'. Signed-off-by: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] w1: added private family data into w1_slave strucutre.Evgeniy Polyakov2005-09-081-0/+1
| | | | | | | | Add family_data to struct w1_slave. Signed-off-by: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] w1: Detouching bug fixed.Evgeniy Polyakov2005-09-081-2/+1
| | | | | Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] w1: Added add/remove slave callbacks.Evgeniy Polyakov2005-09-081-3/+0
| | | | | | | Patch is based on work from Ben Gardner <bgardner@wabtec.com> Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] w1: Added inline functions on top of container_of().Evgeniy Polyakov2005-09-081-0/+15
| | | | | Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] w1: reconnect feature.Evgeniy Polyakov2005-06-211-1/+5
| | | | | | | | | | | | | | | | I've created reconnect feature - if on start there are no registered families all new devices will have defailt family, later when driver for appropriate family is loaded, slaves, which were faound earlier, will still have defult family instead of right one. Reconnect feature will force control thread to run through all master devices and all slaves found and search for slaves with default family id and try to reconnect them. It does not store newly registered family and does not check only those slaves which have reg_num.family the same as being registered one - all slaves with default family are reconnected. Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] w1: Adds a sysfs entry (w1_master_search) that allows you to ↵Evgeniy Polyakov2005-06-211-0/+1
| | | | | | | | | | | disable/enable periodic searches. Adds a sysfs entry (w1_master_search) that allows you to disable/enable periodic searches. Signed-off-by: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] w1: Added the triplet w1 master method and changes w1_search() to ↵Evgeniy Polyakov2005-06-211-20/+67
| | | | | | | | | | use it. Adds the triplet w1 master method and changes w1_search() to use it. Signed-off-by: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] w1: new family structure.Evgeniy Polyakov2005-06-211-1/+1
| | | | | | | | | | Removed some fields which are not required. First step for writing operations. Now only read and read name remain. Patch depends on w1 cleanups patch. Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] w1: cleanups.Evgeniy Polyakov2005-06-211-22/+21
| | | | | | | | | | | | | - white space changes. - list_for_each_entry/list_for_each_entry_safe and reverse changes. - small coding style changes. - removed redundant NULL checks. - use attribute group and macros instead of direct device attributes. Patch is havily based on work from Adrian Bunk and Dmitry Torokhov, thanks guys. Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-161-0/+145
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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