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2020-05-11iopoll: Add readl_poll_sleep_timeoutJagan Teki
Add readl poll API with sleep and timeout support. This change is referenced from Linux from below commit: commit <5f5323a14cad19323060a8cbf9d96f2280a462dd> ("iopoll: introduce read_poll_timeout macro") Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2020-05-11iopoll: Add dealy to read pollJagan Teki
Some drivers and other bsp code not only poll the register with timeout but also required to delay on each transaction. This patch add that requirement by adding sleep_us variable so-that read_poll_timeout now support delay as well. This change is referenced from Linux from below commit: commit <5f5323a14cad19323060a8cbf9d96f2280a462dd> ("iopoll: introduce read_poll_timeout macro") Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2020-05-11iopoll: Add read_poll_timeout common APIJagan Teki
Add read_poll_timeout common API similar to Linux iopoll. readx_poll_timeout will trigger read_poll_timeout with proper op. This will help to extend the functionalities like sleep_us to poll timeout in future. This change is referenced from Linux from below commit: commit <5f5323a14cad19323060a8cbf9d96f2280a462dd> ("iopoll: introduce read_poll_timeout macro") Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
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>
2017-01-14iopoll: import include/linux/iopoll.h from Linux 4.9Masahiro Yamada
This was imported from Linux 4.9 and adjusted for U-Boot. - Replace the license block with SPDX - Drop all *_atomic variants, which make no sense for U-Boot - Remove the sleep_us argument, which makes no sense for U-Boot Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>