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![Wolfram Sang](/assets/img/avatar_default.png)
MX23/28 use IP cores which follow a register layout I have first seen on STMP3xxx SoCs. In this layout, every register actually has four u32: 1.) to store a value directly 2.) a SET register where every 1-bit sets the corresponding bit, others are unaffected 3.) same with a CLR register 4.) same with a TOG (toggle) register Also, the 2 MSBs in register 0 are always the same and can be used to reset the IP core. All this is strictly speaking not mach-specific (but IP core specific) and, thus, doesn't need to be in mach-mxs/include. At least mx6 also uses IP cores following this stmp-style. So: Introduce a stmp-style device, put the code and defines for that in a public place (lib/), and let drivers for stmp-style devices select that code. To avoid regressions and ease reviewing, the actual code is simply copied from mach-mxs. It definately wants updates, but those need a seperate patch series. Voila, mach dependency gone, reusable code introduced. Note that I didn't remove the duplicated code from mach-mxs yet, first the drivers have to be converted. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Dong Aisheng <dong.aisheng@linaro.org>
20 lines
619 B
C
20 lines
619 B
C
/*
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* basic functions for devices following the "stmp" style register layout
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*
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* Copyright (C) 2011 Wolfram Sang, Pengutronix e.K.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __STMP_DEVICE_H__
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#define __STMP_DEVICE_H__
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#define STMP_OFFSET_REG_SET 0x4
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#define STMP_OFFSET_REG_CLR 0x8
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#define STMP_OFFSET_REG_TOG 0xc
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extern int stmp_reset_block(void __iomem *);
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#endif /* __STMP_DEVICE_H__ */
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