blackbird-op-linux/drivers/i2c/muxes, branch master

i2c: mux: pca954x: support property idle-state

2020-01-03T14:00:53+00:00

This supports property idle-state,if present, overrides i2c-mux-idle-disconnect. My use cases: - Use the property idle-state to fix an errata on LS2085ARDB and LS2088ARDB. - Errata id: E-00013(board LS2085ARDB and LS2088ARDB revision on Rev.B, Rev.C and Rev.D). - About E-00013: - Description: I2C1 and I2C3 buses are missing pull-up. - Impact: When the PCA954x device is tri-stated, the I2C bus will float. This makes the I2C bus and its associated downstream devices inaccessible. - Hardware fix: Populate resistors R189 and R190 for I2C1 and resistors R228 and R229 for I2C3. - Software fix: Remove the tri-state option from the PCA954x driver(PCA954x always on enable status, specify a channel zero in dts to fix the errata E-00013). Tested-by: Ioana Ciornei Signed-off-by: Biwen Li Signed-off-by: Peter Rosin

i2c: mux: pca9541: use the BIT macro

2020-01-03T14:00:53+00:00

Because it looks nice! Reviewed-by: Guenter Roeck Reviewed-by: Vladimir Zapolskiy Signed-off-by: Peter Rosin

i2c: Fix Kconfig indentation

2019-11-25T16:13:51+00:00

Adjust indentation from spaces to tab (+optional two spaces) as in coding style with command like: $ sed -e 's/^ /\t/' -i */Kconfig Signed-off-by: Krzysztof Kozlowski Acked-by: Peter Rosin Signed-off-by: Wolfram Sang

Merge branch 'i2c/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

2019-07-16T04:10:39+00:00

Pull i2c updates from Wolfram Sang: "New stuff from the I2C world: - in the core, getting irqs from ACPI is now similar to OF - new driver for MediaTek MT7621/7628/7688 SoCs - bcm2835, i801, and tegra drivers got some more attention - GPIO API cleanups - cleanups in the core headers - lots of usual driver updates" * 'i2c/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (74 commits) i2c: mt7621: Fix platform_no_drv_owner.cocci warnings i2c: cpm: remove casting dma_alloc dt-bindings: i2c: sun6i-p2wi: Fix the binding example dt-bindings: i2c: mv64xxx: Fix the example compatible i2c: i801: Documentation update i2c: i801: Add support for Intel Tiger Lake i2c: i801: Fix PCI ID sorting dt-bindings: i2c-stm32: document optional dmas i2c: i2c-stm32f7: Add I2C_SMBUS_I2C_BLOCK_DATA support i2c: core: Tidy up handling of init_irq i2c: core: Move ACPI gpio IRQ handling into i2c_acpi_get_irq i2c: core: Move ACPI IRQ handling to probe time i2c: acpi: Factor out getting the IRQ from ACPI i2c: acpi: Use available IRQ helper functions i2c: core: Allow whole core to use i2c_dev_irq_from_resources eeprom: at24: modify a comment referring to platform data dt-bindings: i2c: omap: Add new compatible for J721E SoCs dt-bindings: i2c: mv64xxx: Add YAML schemas dt-bindings: i2c: sun6i-p2wi: Add YAML schemas i2c: mt7621: Add MediaTek MT7621/7628/7688 I2C driver ...

i2c: mux/i801: Switch to use descriptor passing

2019-06-22T05:01:34+00:00

This switches the i801 GPIO mux to use GPIO descriptors for handling the GPIO lines. The previous hack which was reaching inside the GPIO chips etc cannot live on. We pass descriptors along with the GPIO mux device at creation instead. The GPIO mux was only used by way of platform data with a platform device from one place in the kernel: the i801 i2c bus driver. Let's just associate the GPIO descriptor table with the actual device like everyone else and dynamically create a descriptor table passed along with the GPIO i2c mux. This enables simplification of the GPIO i2c mux driver to use only the descriptor API and the OF probe path gets simplified in the process. The i801 driver was registering the GPIO i2c mux with PLATFORM_DEVID_AUTO which would make it hard to predict the device name and assign the descriptor table properly, but this seems to be a mistake to begin with: all of the GPIO mux devices are hardcoded to look up GPIO lines from the "gpio_ich" GPIO chip. If there are more than one mux, there is certainly more than one gpio chip as well, and then we have more serious problems. Switch to PLATFORM_DEVID_NONE instead. There can be only one. Cc: Mika Westerberg Cc: Andy Shevchenko Cc: Peter Rosin Cc: Jean Delvare Signed-off-by: Serge Semin Signed-off-by: Linus Walleij Reviewed-by: Andy Shevchenko Reviewed-by: Mika Westerberg [Removed a newline, suggested by Andy. /Peter] Signed-off-by: Peter Rosin

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55+00:00

Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Enrico Weigelt Reviewed-by: Kate Stewart Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman

i2c: mux: pinctrl: use flexible-array member and struct_size() helper

2019-06-10T07:28:56+00:00

Update the code to use a flexible array member instead of a pointer in structure i2c_mux_pinctrl and use the struct_size() helper. Also, make use of the struct_size() helper instead of an open-coded version in order to avoid any potential type mistakes, in particular in the context in which this code is being used. So, replace the following form: sizeof(*mux) + num_names * sizeof(*mux->states) with: struct_size(mux, states, num_names) This code was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva Signed-off-by: Peter Rosin

i2c: mux: arb-gpio: Rewrite to use GPIO descriptors

2019-06-10T07:28:50+00:00

Instead of complex code picking GPIOs out of the device tree and keeping track of polarity for each GPIO line, use descriptors and pull polarity handling into the gpiolib. We look for "our-claim" and "their-claim" since the gpiolib code will try e.g. "our-claim-gpios" and "our-claim-gpio" in turn to locate these GPIO lines from the device tree. Cc: Krzysztof Kozlowski Cc: Marek Szyprowski Cc: Doug Anderson Signed-off-by: Linus Walleij Tested-by: Marek Szyprowski Reviewed-by: Douglas Anderson Signed-off-by: Peter Rosin

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05T15:37:17+00:00

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation version 2 of the license extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 315 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Armijn Hemel Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531190115.503150771@linutronix.de Signed-off-by: Greg Kroah-Hartman

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282

2019-06-05T15:36:37+00:00

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 details extracted 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