Remove some duplicate code that end up in r350844
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manu
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@ -288,293 +288,3 @@ aw_clk_m_register(struct clkdom *clkdom, struct aw_clk_m_def *clkdef)
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return (0);
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}
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/*-
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* Copyright (c) 2019 Emmanuel Vadot <manu@freebsd.org>
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <dev/extres/clk/clk.h>
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#include <arm/allwinner/clkng/aw_clk.h>
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#include <arm/allwinner/clkng/aw_clk_m.h>
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#include "clkdev_if.h"
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/*
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* clknode for clocks matching the formula :
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*
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* clk = clkin / m
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* And that needs to potentially :
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* 1) Set the parent freq
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* 2) Support Setting the parent to a multiple
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*
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*/
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struct aw_clk_m_sc {
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uint32_t offset;
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struct aw_clk_factor m;
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uint32_t mux_shift;
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uint32_t mux_mask;
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uint32_t gate_shift;
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uint32_t flags;
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};
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#define WRITE4(_clk, off, val) \
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CLKDEV_WRITE_4(clknode_get_device(_clk), off, val)
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#define READ4(_clk, off, val) \
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CLKDEV_READ_4(clknode_get_device(_clk), off, val)
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#define DEVICE_LOCK(_clk) \
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CLKDEV_DEVICE_LOCK(clknode_get_device(_clk))
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#define DEVICE_UNLOCK(_clk) \
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CLKDEV_DEVICE_UNLOCK(clknode_get_device(_clk))
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static int
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aw_clk_m_init(struct clknode *clk, device_t dev)
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{
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struct aw_clk_m_sc *sc;
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uint32_t val, idx;
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sc = clknode_get_softc(clk);
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idx = 0;
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if ((sc->flags & AW_CLK_HAS_MUX) != 0) {
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DEVICE_LOCK(clk);
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READ4(clk, sc->offset, &val);
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DEVICE_UNLOCK(clk);
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idx = (val & sc->mux_mask) >> sc->mux_shift;
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}
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clknode_init_parent_idx(clk, idx);
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return (0);
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}
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static int
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aw_clk_m_set_gate(struct clknode *clk, bool enable)
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{
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struct aw_clk_m_sc *sc;
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uint32_t val;
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sc = clknode_get_softc(clk);
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if ((sc->flags & AW_CLK_HAS_GATE) == 0)
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return (0);
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DEVICE_LOCK(clk);
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READ4(clk, sc->offset, &val);
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if (enable)
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val |= (1 << sc->gate_shift);
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else
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val &= ~(1 << sc->gate_shift);
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WRITE4(clk, sc->offset, val);
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DEVICE_UNLOCK(clk);
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return (0);
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}
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static int
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aw_clk_m_set_mux(struct clknode *clk, int index)
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{
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struct aw_clk_m_sc *sc;
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uint32_t val;
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sc = clknode_get_softc(clk);
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if ((sc->flags & AW_CLK_HAS_MUX) == 0)
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return (0);
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DEVICE_LOCK(clk);
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READ4(clk, sc->offset, &val);
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val &= ~sc->mux_mask;
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val |= index << sc->mux_shift;
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WRITE4(clk, sc->offset, val);
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DEVICE_UNLOCK(clk);
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return (0);
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}
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static uint64_t
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aw_clk_m_find_best(struct aw_clk_m_sc *sc, uint64_t fparent, uint64_t *fout,
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uint32_t *factor_m)
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{
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uint64_t cur, best;
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uint32_t m, max_m, min_m;
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*factor_m = 0;
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max_m = aw_clk_factor_get_max(&sc->m);
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min_m = aw_clk_factor_get_min(&sc->m);
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for (m = min_m; m <= max_m; ) {
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cur = fparent / m;
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if (abs(*fout - cur) < abs(*fout - best)) {
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best = cur;
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*factor_m = m;
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}
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if ((sc->m.flags & AW_CLK_FACTOR_POWER_OF_TWO) != 0)
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m <<= 1;
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else
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m++;
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}
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return (best);
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}
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static int
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aw_clk_m_set_freq(struct clknode *clk, uint64_t fparent, uint64_t *fout,
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int flags, int *stop)
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{
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struct aw_clk_m_sc *sc;
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struct clknode *p_clk;
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uint64_t cur, best;
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uint32_t val, m, best_m;
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sc = clknode_get_softc(clk);
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best = cur = 0;
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if ((sc->flags & AW_CLK_SET_PARENT) != 0) {
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p_clk = clknode_get_parent(clk);
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if (p_clk == NULL) {
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printf("%s: Cannot get parent for clock %s\n",
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__func__,
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clknode_get_name(clk));
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return (ENXIO);
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}
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clknode_set_freq(p_clk, *fout, CLK_SET_ROUND_MULTIPLE, 0);
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clknode_get_freq(p_clk, &fparent);
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best = aw_clk_m_find_best(sc, fparent, fout,
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&best_m);
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} else {
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best = aw_clk_m_find_best(sc, fparent, fout,
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&best_m);
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}
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if ((flags & CLK_SET_DRYRUN) != 0) {
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*fout = best;
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*stop = 1;
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return (0);
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}
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if ((best < *fout) &&
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((flags & CLK_SET_ROUND_DOWN) == 0)) {
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*stop = 1;
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return (ERANGE);
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}
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if ((best > *fout) &&
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((flags & CLK_SET_ROUND_UP) == 0)) {
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*stop = 1;
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return (ERANGE);
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}
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DEVICE_LOCK(clk);
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READ4(clk, sc->offset, &val);
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m = aw_clk_factor_get_value(&sc->m, best_m);
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val &= ~sc->m.mask;
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val |= m << sc->m.shift;
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WRITE4(clk, sc->offset, val);
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DEVICE_UNLOCK(clk);
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*fout = best;
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*stop = 1;
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return (0);
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}
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static int
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aw_clk_m_recalc(struct clknode *clk, uint64_t *freq)
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{
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struct aw_clk_m_sc *sc;
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uint32_t val, m;
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sc = clknode_get_softc(clk);
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DEVICE_LOCK(clk);
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READ4(clk, sc->offset, &val);
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DEVICE_UNLOCK(clk);
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m = aw_clk_get_factor(val, &sc->m);
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*freq = *freq / m;
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return (0);
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}
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static clknode_method_t aw_m_clknode_methods[] = {
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/* Device interface */
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CLKNODEMETHOD(clknode_init, aw_clk_m_init),
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CLKNODEMETHOD(clknode_set_gate, aw_clk_m_set_gate),
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CLKNODEMETHOD(clknode_set_mux, aw_clk_m_set_mux),
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CLKNODEMETHOD(clknode_recalc_freq, aw_clk_m_recalc),
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CLKNODEMETHOD(clknode_set_freq, aw_clk_m_set_freq),
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CLKNODEMETHOD_END
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};
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DEFINE_CLASS_1(aw_m_clknode, aw_m_clknode_class, aw_m_clknode_methods,
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sizeof(struct aw_clk_m_sc), clknode_class);
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int
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aw_clk_m_register(struct clkdom *clkdom, struct aw_clk_m_def *clkdef)
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{
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struct clknode *clk;
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struct aw_clk_m_sc *sc;
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clk = clknode_create(clkdom, &aw_m_clknode_class, &clkdef->clkdef);
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if (clk == NULL)
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return (1);
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sc = clknode_get_softc(clk);
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sc->offset = clkdef->offset;
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sc->m.shift = clkdef->m.shift;
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sc->m.width = clkdef->m.width;
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sc->m.mask = ((1 << sc->m.width) - 1) << sc->m.shift;
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sc->m.value = clkdef->m.value;
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sc->m.flags = clkdef->m.flags;
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sc->mux_shift = clkdef->mux_shift;
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sc->mux_mask = ((1 << clkdef->mux_width) - 1) << sc->mux_shift;
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sc->gate_shift = clkdef->gate_shift;
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sc->flags = clkdef->flags;
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clknode_register(clkdom, clk);
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return (0);
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}
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@ -46,51 +46,3 @@ struct aw_clk_m_def {
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int aw_clk_m_register(struct clkdom *clkdom, struct aw_clk_m_def *clkdef);
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#endif /* __AW_CLK_M_H__ */
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/*-
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* Copyright (c) 2019 Emmanuel Vadot <manu@freebsd.org>
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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#ifndef __AW_CLK_M_H__
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#define __AW_CLK_M_H__
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#include <dev/extres/clk/clk.h>
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struct aw_clk_m_def {
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struct clknode_init_def clkdef;
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uint32_t offset;
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struct aw_clk_factor m;
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uint32_t mux_shift;
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uint32_t mux_width;
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uint32_t gate_shift;
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uint32_t flags;
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};
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int aw_clk_m_register(struct clkdom *clkdom, struct aw_clk_m_def *clkdef);
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#endif /* __AW_CLK_M_H__ */
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