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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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682e2b7d45
The new code calls the clock setup code on registration which can be before the clock system has been fully initialised. The following code re-does this setup at the end of the clock registration and thus we get two printings. Update the calls to only print on the last pass or when doing the necessary resume work. Signed-off-by: Ben Dooks <ben-linux@fluff.org>
84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
/* linux/arch/arm/plat-samsung/include/plat/clock-clksrc.h
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*
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* Parts taken from arch/arm/plat-s3c64xx/clock.c
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* Copyright 2008 Openmoko, Inc.
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* Copyright 2008 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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* http://armlinux.simtec.co.uk/
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*
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* Copyright 2009 Ben Dooks <ben-linux@fluff.org>
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* Copyright 2009 Harald Welte
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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 version 2 as
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* published by the Free Software Foundation.
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*/
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/**
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* struct clksrc_sources - list of sources for a given clock
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* @sources: array of pointers to clocks
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* @nr_sources: The size of @sources
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*/
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struct clksrc_sources {
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unsigned int nr_sources;
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struct clk **sources;
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};
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/**
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* struct clksrc_reg - register definition for clock control bits
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* @reg: pointer to the register in virtual memory.
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* @shift: the shift in bits to where the bitfield is.
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* @size: the size in bits of the bitfield.
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*
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* This specifies the size and position of the bits we are interested
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* in within the register specified by @reg.
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*/
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struct clksrc_reg {
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void __iomem *reg;
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unsigned short shift;
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unsigned short size;
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};
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/**
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* struct clksrc_clk - class of clock for newer style samsung devices.
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* @clk: the standard clock representation
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* @sources: the sources for this clock
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* @reg_src: the register definition for selecting the clock's source
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* @reg_div: the register definition for the clock's output divisor
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*
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* This clock implements the features required by the newer SoCs where
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* the standard clock block provides an input mux and a post-mux divisor
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* to provide the periperhal's clock.
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*
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* The array of @sources provides the mapping of mux position to the
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* clock, and @reg_src shows the code where to modify to change the mux
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* position. The @reg_div defines how to change the divider settings on
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* the output.
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*/
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struct clksrc_clk {
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struct clk clk;
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struct clksrc_sources *sources;
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struct clksrc_reg reg_src;
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struct clksrc_reg reg_div;
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};
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/**
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* s3c_set_clksrc() - setup the clock from the register settings
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* @clk: The clock to setup.
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* @announce: true to announce the setting to printk().
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*
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* Setup the clock from the current register settings, for when the
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* kernel boots or if it is resuming from a possibly unknown state.
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*/
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extern void s3c_set_clksrc(struct clksrc_clk *clk, bool announce);
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/**
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* s3c_register_clksrc() register clocks from an array of clksrc clocks
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* @srcs: The array of clocks to register
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* @size: The size of the @srcs array.
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*
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* Initialise and register the array of clocks described by @srcs.
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*/
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extern void s3c_register_clksrc(struct clksrc_clk *srcs, int size);
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