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path: root/drivers/clk/sunxi-ng/ccu_div.h
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* treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282Thomas Gleixner2019-06-051-9/+1
| | | | | | | | | | | | | | | | | | | | | | | | | 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 <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* clk: sunxi-ng: div: Add support for fixed post-dividerPriit Laes2017-08-141-1/+2
| | | | | | | | | SATA clock on sun4i/sun7i is of type (parent) / M / 6 where 6 is fixed post-divider. Signed-off-by: Priit Laes <plaes@plaes.org> Signed-off-by: Icenowy Zheng <icenowy@aosc.io> Signed-off-by: Chen-Yu Tsai <wens@csie.org>
* clk: sunxi-ng: Implement factors offsetsMaxime Ripard2017-01-231-1/+9
| | | | | | | | | | | | | | | | | | The factors we've seen so far all had an offset of one. However, on the earlier Allwinner SoCs, some factors could have no offset at all, meaning that the value computed to reach the rate we want to use was the one we had to program in the registers. Implement an additional field for the factors that can have such an offset (linears, not based on a power of two) to specify that offset. This offset is not linked to the extremums that can be specified in those structures too. The minimum and maximum are representing the range of values we can use to try to compute the best rate. The offset comes later on when we want to set the best value in the registers. Acked-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
* clk: sunxi-ng: Rename the internal structuresMaxime Ripard2016-10-201-3/+3
| | | | | | | | Rename the structures meant to be embedded in other structures to make it consistent with the mux structure name Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Chen-Yu Tsai <wens@csie.org>
* clk: sunxi-ng: div: Allow to set a maximumMaxime Ripard2016-09-101-4/+20
| | | | | | | | | | | | | | Some dividers might have a maximum value that is lower than the width of the register. Add a field to _ccu_div to handle those case properly. If the field is set to 0, the code will assume that the maximum value is the maximum one that can be used with the field register width. Otherwise, we'll use whatever value has been set. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Chen-Yu Tsai <wens@csie.org>
* clk: sunxi-ng: div: Add kerneldoc for the _ccu_div structureMaxime Ripard2016-09-101-0/+14
| | | | | | | | | | The internal _ccu_div structure is meant to be embedded into other structures to combine the various dividers and to form the clock classes support. Start to document those structures by using kerneldoc. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
* clk: sunxi-ng: div: Add mux table macrosMaxime Ripard2016-09-101-7/+21
| | | | | | | Add some macros to ease the declaration of clocks that are using them. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Chen-Yu Tsai <wens@csie.org>
* clk: sunxi-ng: mux: Rename mux macro to be consistentMaxime Ripard2016-08-251-1/+1
| | | | | | | Rename the internal mux macro to be consistent with the other internal structure macros. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
* clk: sunxi-ng: Add dividerMaxime Ripard2016-07-081-0/+133
Add support for the various dividers (linear, table or pow-of-two based) found in the CCU. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Michael Turquette <mturquette@baylibre.com> Link: lkml.kernel.org/r/20160629190535.11855-8-maxime.ripard@free-electrons.com