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2024-02-15w1: add UART w1 bus driverChristoph Winklhofer1-0/+10
Add a UART 1-Wire bus driver. The driver utilizes the UART interface via the Serial Device Bus to create the 1-Wire timing patterns. The driver was tested on a "Raspberry Pi 3B" with a DS18B20 and on a "Variscite DART-6UL" with a DS18S20 temperature sensor. The 1-Wire timing pattern and the corresponding UART baud-rate with the interpretation of the transferred bytes are described in the document: Link: https://www.analog.com/en/technical-articles/using-a-uart-to-implement-a-1wire-bus-master.html In short, the UART peripheral must support full-duplex and operate in open-drain mode. The timing patterns are generated by a specific combination of baud-rate and transmitted byte, which corresponds to a 1-Wire read bit, write bit or reset. Signed-off-by: Christoph Winklhofer <[email protected]> Link: https://lore.kernel.org/r/[email protected] [krzysztof: w1_uart_serdev_receive_buf() return type fixup] Signed-off-by: Krzysztof Kozlowski <[email protected]>
2023-11-15w1: Add AXI 1-wire host driver for AMD programmable logic IP coreKris Chaplin1-0/+11
Add a host driver to support the AMD 1-Wire programmable logic IP block. This block guarantees protocol timing for driving off-board devices such as thermal sensors, proms, etc. Add file to MAINTAINERS Co-developed-by: Thomas Delev <[email protected]> Signed-off-by: Thomas Delev <[email protected]> Signed-off-by: Kris Chaplin <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Krzysztof Kozlowski <[email protected]>
2023-04-20w1: omap-hdq: allow compile testingKrzysztof Kozlowski1-1/+1
omap-hdq does not depend on anything from ARCH_OMAP for building. Signed-off-by: Krzysztof Kozlowski <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2023-02-01w1: remove ds1wm driverArnd Bergmann1-7/+0
This driver was used by the mfd/asic3 and mfd/htc-pasic3 drivers, but both of those are removed as part of the PXA spring cleaning, which leaves the w1 support orphaned as well. Cc: Evgeniy Polyakov <[email protected]> Cc: Szabolcs Gyurko <[email protected]> Acked-by: Robert Jarzmik <[email protected]> Signed-off-by: Arnd Bergmann <[email protected]>
2019-09-04w1: add 1-wire master driver for IP block found in SGI ASICsThomas Bogendoerfer1-0/+9
Starting with SGI Origin machines nearly every new SGI ASIC contains an 1-Wire master. They are used for attaching One-Wire prom devices, which contain information about part numbers, revision numbers, serial number etc. and MAC addresses for ethernet interfaces. This patch adds a master driver to support this IP block. It also adds an extra field dev_id to struct w1_bus_master, which could be in used in slave drivers for creating unique device names. Signed-off-by: Thomas Bogendoerfer <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-05-21treewide: Add SPDX license identifier - Makefile/KconfigThomas Gleixner1-0/+1
Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-06-26w1: Allow compile test of GPIO consumers if !GPIOLIBGeert Uytterhoeven1-1/+1
The GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB is not enabled. Hence drivers that depend on GPIOLIB, but use GPIO consumer functionality only, can still be compiled if GPIOLIB is not enabled. Relax the dependency on GPIOLIB if COMPILE_TEST is enabled, where appropriate. Signed-off-by: Geert Uytterhoeven <[email protected]> Acked-by: Linus Walleij <[email protected]> Acked-by: Evgeniy Polyakov <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2014-02-28w1: mxc_w1: Enable driver compilation with COMPILE_TESTAlexander Shiyan1-1/+1
This helps increasing build testing coverage. To do this, __raw_{read,write}b() functions was be replaced with simple {read,write}b() variants. Signed-off-by: Alexander Shiyan <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2014-02-28w1: Remove excess dependencies on W1 for masters and slavesAlexander Shiyan1-2/+1
Configuration for masters and slaves is included only if W1 symbol enabled, so no reason to check it once more. Signed-off-by: Alexander Shiyan <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2013-09-13Remove GENERIC_HARDIRQ config optionMartin Schwidefsky1-1/+1
After the last architecture switched to generic hard irqs the config options HAVE_GENERIC_HARDIRQS & GENERIC_HARDIRQS and the related code for !CONFIG_GENERIC_HARDIRQS can be removed. Signed-off-by: Martin Schwidefsky <[email protected]>
2013-04-16Convert selectors of GENERIC_GPIO to GPIOLIBAlexandre Courbot1-1/+1
GENERIC_GPIO is now equivalent to GPIOLIB and features that depended on GENERIC_GPIO can now depend on GPIOLIB to allow removal of this option. Signed-off-by: Alexandre Courbot <[email protected]> Acked-by: Linus Walleij <[email protected]> Acked-by: Grant Likely <[email protected]>
2012-12-16ARM: OMAP: Fix drivers to depend on omap for internal devicesTony Lindgren1-0/+1
These devices are not available on other architectures, so let's limit them to omap. If the driver subsystem maintainers want to build test system wide changes without building for each target, it's easy to carry a test patch that just strips out the depends entries from Kconfig files. Signed-off-by: Tony Lindgren <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2012-10-24drivers/w1/masters: remove CONFIG_EXPERIMENTALKees Cook1-1/+1
This config item has not carried much meaning for a while now and is almost always enabled by default. As agreed during the Linux kernel summit, remove it. CC: Andrew Morton <[email protected]> CC: Paul Walmsley <[email protected]> CC: Felipe Balbi <[email protected]> Signed-off-by: Kees Cook <[email protected]> Acked-by: Evgeniy Polyakov <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2012-08-16w1: omap-hdq: drop ARCH dependencyFelipe Balbi1-1/+0
Let the driver compile everywhere while also removing unnecessary headers. Signed-off-by: Felipe Balbi <[email protected]> Acked-by: Evgeniy Polyakov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2012-06-21W1: OMAP HDQ1W: allow driver to be built on all OMAP2+Paul Walmsley1-1/+1
Allow the OMAP HDQ1W driver to be built for all OMAP2+ SoCs by adjusting KConfig dependencies. The previous dependency required either SOC_OMAP2430 or ARCH_OMAP3 to be set, but the HDQ IP block is present on OMAP2420 and OMAP44xx SoCs. The driver was still selectable on multi-OMAP kernel configurations, however; so the previous prohibition was rather pointless. Signed-off-by: Paul Walmsley <[email protected]> Cc: Evgeniy Polyakov <[email protected]> Acked-by: Evgeniy Polyakov <[email protected]>
2011-06-15w1: W1_MASTER_DS1WM should depend on GENERIC_HARDIRQSGeert Uytterhoeven1-1/+1
On m68k (which doesn't support generic hardirqs yet): drivers/w1/masters/ds1wm.c: In function `ds1wm_probe': drivers/w1/masters/ds1wm.c: error: implicit declaration of function `irq_set_irq_type' Signed-off-by: Geert Uytterhoeven <[email protected]> Cc: Evgeniy Polyakov <[email protected]> Cc: Jean-Franois Dagenais <[email protected]> Cc: Matt Reimer <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-05-26w1: complete the 1-wire (w1) ds1wm driver search algorithmJean-François Dagenais1-1/+1
This adds multi-slave support of the w1 bus for the ds1wm Synthesizable 1-Wire Bus Master. Also many fixes and tweaks based on the rev3 of the datasheet http://datasheets.maxim-ic.com/en/ds/DS1WM.pdf Signed-off-by: Jean-François Dagenais <[email protected]> Cc: Evgeniy Polyakov <[email protected]> Cc: Szabolcs Gyurko <[email protected]> Cc: Matt Reimer <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-01-27omap: Start using CONFIG_SOC_OMAPTony Lindgren1-1/+1
We want to have just CONFIG_ARCH_OMAP2, 3 and 4. The rest are nowadays just subcategories of these. Search and replace the following: ARCH_OMAP2420 SOC_OMAP2420 ARCH_OMAP2430 SOC_OMAP2430 ARCH_OMAP3430 SOC_OMAP3430 No functional changes. Signed-off-by: Tony Lindgren <[email protected]> Signed-off-by: Thomas Weber <[email protected]> Acked-by: Sourav Poddar <[email protected]>
2010-02-15omap3: Replace ARCH_OMAP34XX with ARCH_OMAP3Tony Lindgren1-1/+1
Replace ARCH_OMAP34XX with ARCH_OMAP3 Signed-off-by: Tony Lindgren <[email protected]>
2009-06-12trivial: Kconfig: .ko is normally not included in module namesPavel Machek1-3/+3
.ko is normally not included in Kconfig help, make it consistent. Signed-off-by: Pavel Machek <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
2009-01-08w1: add 1-wire master driver for i.MX27 / i.MX31Sascha Hauer1-0/+6
This patch adds support for the 1-wire master interface for i.MX27 and i.MX31. Signed-off-by: Luotao Fu <[email protected]> Signed-off-by: Sascha Hauer <[email protected]> Signed-off-by: Evgeniy Polyakov <[email protected]> Cc: Russell King <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-11-30W1_MASTER_DS1WM should depend on HAVE_CLKAl Viro1-1/+1
Uses clk_...() a lot Acked-by: [email protected] Signed-off-by: Al Viro <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-11-12hdq driver for OMAP2430/3430Madhusudhan Chikkature1-0/+7
The HDQ/1-Wire module of TI OMAP2430/3430 platforms implement the hardware protocol of the master functions of the Benchmark HDQ and the Dallas Semiconductor 1-Wire protocols. These protocols use a single wire for communication between the master (HDQ/1-Wire controller) and the slave (HDQ/1-Wire external compliant device). This patch provides the HDQ driver to suppport TI OMAP2430/3430 platforms. Signed-off-by: Madhusudhan Chikkature<[email protected]> Acked-by: Felipe Balbi <[email protected]> Acked-by: Evgeniy Polyakov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-06w1-gpio: add GPIO w1 bus master driverVille Syrjala1-0/+10
Add a GPIO 1-wire bus master driver. The driver used the GPIO API to control the wire and the GPIO pin can be specified using platform data similar to i2c-gpio. The driver was tested with AT91SAM9260 + DS2401. Signed-off-by: Ville Syrjala <[email protected]> Cc: Evgeniy Polyakov <[email protected]> Cc: David Brownell <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-07-16Use menuconfig objects: W1Jan Engelhardt1-4/+3
Use menuconfigs instead of menus, so the whole menu can be disabled at once instead of going through all options. Signed-off-by: Jan Engelhardt <[email protected]> Cc: Evgeniy Polyakov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-05-08Driver for the Maxim DS1WM, a 1-wire bus master ASIC core[email protected]1-0/+8
Cc: Matt Reimer <[email protected]> [[email protected]: kconfig update] Signed-off-by: Matt Reimer <[email protected]> Signed-off-by: Evgeniy Polyakov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-06-22[PATCH] w1: Replace dscore and ds_w1_bridge with ds2490 driver.Evgeniy Polyakov1-18/+9
2006-03-23[PATCH] fix W1_MASTER_DS9490_BRIDGE dependenciesAdrian Bunk1-1/+1
W1_DS9490 was renamed to W1_MASTER_DS9490, but the entry in the dependencies of W1_MASTER_DS9490_BRIDGE was forgotten. Signed-off-by: Adrian Bunk <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2006-03-23[PATCH] W1: Add the DS2482 I2C-to-w1 bridge driver.Evgeniy Polyakov1-0/+10
Signed-off-by: Ben Gardner <[email protected]> Signed-off-by: Evgeniy Polyakov <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2006-03-23[PATCH] W1: Move w1 bus master code into 'w1/masters' and move w1 slave code ↵Evgeniy Polyakov1-0/+38
into 'w1/slaves' Signed-off-by: Ben Gardner <[email protected]> Signed-off-by: Evgeniy Polyakov <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
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