12a05f9a86
support frameworks(i.e. reset/regulators/phy/tsensors/fuses...). The clock framework significantly simplifies handling of complex clock structures found in modern SoCs. It provides the unified consumers interface, holds and manages actual clock topology, frequency and gating. It's tested on three different ARM boards (Nvidia Tegra TK1, Inforce 6410 and Odroid XU2) and on one MIPS board (Creator Ci20) by kan@. The framework is still far from perfect and probably doesn't have stable interface yet, but we want to start testing it on more real boards and different architectures. Reviewed by: ian, kan (earlier version)
80 lines
2.1 KiB
Objective-C
80 lines
2.1 KiB
Objective-C
#-
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# Copyright 2016 Michal Meloun <mmel@FreeBSD.org>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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INTERFACE clknode;
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HEADER {
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struct clknode;
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}
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#
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# Initialize clock node, get shanpshot of cached values
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#
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METHOD int init {
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struct clknode *clk;
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device_t dev;
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};
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#
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# Recalculate frequency
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# req - in/out recalulated frequency
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#
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METHOD int recalc_freq {
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struct clknode *clk;
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uint64_t *freq;
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};
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#
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# Set frequency
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# fin - parent (input)frequency.
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# fout - requested output freqency. If clock cannot change frequency,
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# then must return new requested frequency for his parent
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METHOD int set_freq {
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struct clknode *clk;
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uint64_t fin;
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uint64_t *fout;
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int flags;
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int *done;
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};
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#
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# Enable/disable clock
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#
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METHOD int set_gate {
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struct clknode *clk;
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bool enable;
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};
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#
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# Set multiplexer
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#
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METHOD int set_mux {
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struct clknode *clk;
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int idx;
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};
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