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path: root/drivers/i2c/i2c_core.c
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2020-05-18common: Drop log.h from common headerSimon Glass
Move this header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2017-06-12powerpc, 8xx: remove support for 8xxHeiko Schocher
There was for long time no activity in the 8xx area. We need to go further and convert to Kconfig, but it turned out, nobody is interested anymore in 8xx, so remove it (with a heavy heart, knowing that I remove here the root of U-Boot). Signed-off-by: Heiko Schocher <hs@denx.de>
2017-04-05i2c: Drop unused i2c_soft...() functionsSimon Glass
These are not used in U-Boot. Manual relocation fixup is used by blackfin but that is being removed. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-06-10drivers: i2c: mxc: Add early initYuan Yao
Add early i2c init function with conservative divider when the exact clock rate is not available. Signed-off-by: Yuan Yao <yao.yuan@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
2014-12-08i2c: Correct spelling errorMark Tomlinson
"diconnect" and "disconnet" should both be "disconnect". Signed-off-by: Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz>
2014-12-08i2c: Fix deselection of muxesMark Tomlinson
Due to an uninitialised variable, when muxes were deselected, any value could be written to the mux control register. On the PCA9548, this could result in multiple channels being selected, thus enabling multiple pull-up resistors, and much bus capacitance. The fix is simply to initialise the written value to zero. Signed-off-by: Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz>
2014-11-04i2c: use __weakJeroen Hofstee
Cc: Heiko Schocher <hs@denx.de> Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
2014-01-13i2c: Fix i2c speed commandDarwin Rambo
This corrects i2c core to interpret the value returned by i2c_set_bus_speed as a success indicator rather than the actual speed that was set. When i2c_set_bus_speed returns a failure code, the speed is unknown so the adapter speed is set to zero. Signed-off-by: Darwin Rambo <drambo@broadcom.com> Reviewed-by: Tim Kryger <tim.kryger@linaro.org> Reviewed-by: Steve Rae <srae@broadcom.com> Acked-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
2013-10-17i2c: eliminate warnings in i2c_reloc_fixup functionMasahiro Yamada
The prototype of handlers had changed. This commit uses cast with (void *) rather than the handler-specific prototype. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2013-10-17Fix: nommu I2C adapter relocation errorJens Scharsig (BuS Elektronik)
NoMMU systems have a access violation problem with i2c_reloc_fixup. Blame for it is a double relocation of the adapter itself. The i2c_adap_p is already relocated, if i2c_reloc_fixup is called. This patch removes the relocation of i2c_adap_p from i2c_reloc_fixup to fix this. Signed-off-by: Jens Scharsig (BuS Elektronik) <esw@bus-elektronik.de>
2013-10-17i2c, core: optimze i2c_set_bus_num()Heiko Schocher
check first, if we are on the bus, we want to enable. If so, return immediately, do not calc max adapter number, nor check other things. Signed-off-by: Heiko Schocher <hs@denx.de> Cc: Lukasz Majewski <l.majewski@samsung.com> Acked-by: Lukasz Majewski <l.majewski@samsung.com>
2013-10-17i2c: Zynq: Support for TI PCA9548 bus multiplexerMichael Burr
(Interface is not quite the same as Phillips PCA9547.) Signed-off-by: Michael Burr <michael.burr@logicpd.com> Cc: Heiko Schocher <hs@denx.de> Cc: Michal Simek <monstr@monstr.eu>
2013-07-25drivers/i2c: Update fti2c010.[ch], i2c_core.c to use SPDX identifiersTom Rini
Acked-by: Heiko Schocher <hs@denx.de> Signed-off-by: Tom Rini <trini@ti.com>
2013-07-23i2c: add i2c_core and prepare for new multibus supportHeiko Schocher
This Patch introduce the new i2c_core file, which holds the I2C core functions, for the rework of the multibus/ multiadapter support. Also adds changes in i2c.h for the new I2C multibus/multiadapter support. This new support can be activated with the CONFIG_SYS_I2C define. Signed-off-by: Heiko Schocher <hs@denx.de> Signed-off-by: Simon Glass <sjg@chromium.org> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Stephen Warren <swarren@wwwdotorg.org>