Author: manu
Date: Mon Oct 14 21:47:20 2019
New Revision: 353525
URL: https://svnweb.freebsd.org/changeset/base/353525
Log:
arm64: allwinner: Add new clock aw_clk_np
This is a clock type present in Allwinner H6 where the formula is :
f = fparent * N / P
MFC after: 1 month
Added:
head/sys/arm/allwinner/clkng/aw_clk_np.c (contents, props changed)
head/sys/arm/allwinner/clkng/aw_clk_np.h (contents, props changed)
Modified:
head/sys/arm/allwinner/clkng/aw_ccung.c
head/sys/arm/allwinner/clkng/aw_ccung.h
head/sys/arm/allwinner/clkng/aw_clk.h
head/sys/conf/files.arm64
Modified: head/sys/arm/allwinner/clkng/aw_ccung.c
==============================================================================
--- head/sys/arm/allwinner/clkng/aw_ccung.c Mon Oct 14 21:45:15 2019
(r353524)
+++ head/sys/arm/allwinner/clkng/aw_ccung.c Mon Oct 14 21:47:20 2019
(r353525)
@@ -316,6 +316,10 @@ aw_ccung_attach(device_t dev)
break;
case AW_CLK_MIPI:
aw_clk_mipi_register(sc->clkdom, sc->clks[i].clk.mipi);
+ break;
+ case AW_CLK_NP:
+ aw_clk_np_register(sc->clkdom, sc->clks[i].clk.np);
+ break;
}
}
Modified: head/sys/arm/allwinner/clkng/aw_ccung.h
==============================================================================
--- head/sys/arm/allwinner/clkng/aw_ccung.h Mon Oct 14 21:45:15 2019
(r353524)
+++ head/sys/arm/allwinner/clkng/aw_ccung.h Mon Oct 14 21:47:20 2019
(r353525)
@@ -35,6 +35,7 @@
#include <arm/allwinner/clkng/aw_clk_mipi.h>
#include <arm/allwinner/clkng/aw_clk_nkmp.h>
#include <arm/allwinner/clkng/aw_clk_nm.h>
+#include <arm/allwinner/clkng/aw_clk_np.h>
#include <arm/allwinner/clkng/aw_clk_prediv_mux.h>
#include <arm/allwinner/clkng/aw_clk_frac.h>
#include <dev/extres/clk/clk_mux.h>
@@ -52,6 +53,7 @@ enum aw_ccung_clk_type {
AW_CLK_FRAC,
AW_CLK_M,
AW_CLK_MIPI,
+ AW_CLK_NP,
};
struct aw_ccung_clk {
@@ -66,6 +68,7 @@ struct aw_ccung_clk {
struct aw_clk_frac_def *frac;
struct aw_clk_m_def *m;
struct aw_clk_mipi_def *mipi;
+ struct aw_clk_np_def *np;
} clk;
};
Modified: head/sys/arm/allwinner/clkng/aw_clk.h
==============================================================================
--- head/sys/arm/allwinner/clkng/aw_clk.h Mon Oct 14 21:45:15 2019
(r353524)
+++ head/sys/arm/allwinner/clkng/aw_clk.h Mon Oct 14 21:47:20 2019
(r353525)
@@ -407,6 +407,35 @@ aw_clk_factor_get_value(struct aw_clk_factor *factor,
.flags = _flags, \
}
+#define NP_CLK(_clkname, _id, _name, _pnames, \
+ _offset, \
+ _nshift, _nwidth, _nvalue, _nflags, \
+ _pshift, _pwidth, _pvalue, _pflags, \
+ _gate_shift, \
+ _lock, _lock_retries, \
+ _flags) \
+ static struct aw_clk_np_def _clkname = { \
+ .clkdef = { \
+ .id = _id, \
+ .name = _name, \
+ .parent_names = _pnames, \
+ .parent_cnt = nitems(_pnames), \
+ }, \
+ .offset = _offset, \
+ .n.shift = _nshift, \
+ .n.width = _nwidth, \
+ .n.value = _nvalue, \
+ .n.flags = _nflags, \
+ .p.shift = _pshift, \
+ .p.width = _pwidth, \
+ .p.value = _pvalue, \
+ .p.flags = _pflags, \
+ .gate_shift = _gate_shift, \
+ .lock_shift = _lock, \
+ .lock_retries = _lock_retries, \
+ .flags = _flags, \
+ }
+
#define PREDIV_CLK(_clkname, _id, _name, _pnames, \
_offset, \
_mux_shift, _mux_width, \
Added: head/sys/arm/allwinner/clkng/aw_clk_np.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/allwinner/clkng/aw_clk_np.c Mon Oct 14 21:47:20 2019
(r353525)
@@ -0,0 +1,267 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2019 Emmanuel Vadot <m...@freebsd.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+
+#include <dev/extres/clk/clk.h>
+
+#include <arm/allwinner/clkng/aw_clk.h>
+#include <arm/allwinner/clkng/aw_clk_np.h>
+
+#include "clkdev_if.h"
+
+/*
+ * clknode for clocks matching the formula :
+ *
+ * clk = clkin * n / p
+ *
+ */
+
+struct aw_clk_np_sc {
+ uint32_t offset;
+
+ struct aw_clk_factor n;
+ struct aw_clk_factor p;
+
+ uint32_t gate_shift;
+ uint32_t lock_shift;
+ uint32_t lock_retries;
+
+ uint32_t flags;
+};
+
+#define WRITE4(_clk, off, val)
\
+ CLKDEV_WRITE_4(clknode_get_device(_clk), off, val)
+#define READ4(_clk, off, val)
\
+ CLKDEV_READ_4(clknode_get_device(_clk), off, val)
+#define DEVICE_LOCK(_clk)
\
+ CLKDEV_DEVICE_LOCK(clknode_get_device(_clk))
+#define DEVICE_UNLOCK(_clk)
\
+ CLKDEV_DEVICE_UNLOCK(clknode_get_device(_clk))
+
+static int
+aw_clk_np_init(struct clknode *clk, device_t dev)
+{
+ struct aw_clk_np_sc *sc;
+
+ sc = clknode_get_softc(clk);
+
+ clknode_init_parent_idx(clk, 0);
+ return (0);
+}
+
+static int
+aw_clk_np_set_gate(struct clknode *clk, bool enable)
+{
+ struct aw_clk_np_sc *sc;
+ uint32_t val;
+
+ sc = clknode_get_softc(clk);
+
+ if ((sc->flags & AW_CLK_HAS_GATE) == 0)
+ return (0);
+
+ DEVICE_LOCK(clk);
+ READ4(clk, sc->offset, &val);
+ if (enable)
+ val |= (1 << sc->gate_shift);
+ else
+ val &= ~(1 << sc->gate_shift);
+ WRITE4(clk, sc->offset, val);
+ DEVICE_UNLOCK(clk);
+
+ return (0);
+}
+
+static uint64_t
+aw_clk_np_find_best(struct aw_clk_np_sc *sc, uint64_t fparent, uint64_t *fout,
+ uint32_t *factor_n, uint32_t *factor_p)
+{
+ uint64_t cur, best;
+ uint32_t n, p, max_n, max_p, min_n, min_p;
+
+ *factor_n = *factor_p = 0;
+
+ max_n = aw_clk_factor_get_max(&sc->n);
+ max_p = aw_clk_factor_get_max(&sc->p);
+ min_n = aw_clk_factor_get_min(&sc->n);
+ min_p = aw_clk_factor_get_min(&sc->p);
+
+ for (p = min_p; p <= max_p; ) {
+ for (n = min_n; n <= max_n; ) {
+ cur = fparent * n / p;
+ if (abs(*fout - cur) < abs(*fout - best)) {
+ best = cur;
+ *factor_n = n;
+ *factor_p = p;
+ }
+
+ n++;
+ }
+ p++;
+ }
+
+ return (best);
+}
+
+static int
+aw_clk_np_set_freq(struct clknode *clk, uint64_t fparent, uint64_t *fout,
+ int flags, int *stop)
+{
+ struct aw_clk_np_sc *sc;
+ uint64_t cur, best;
+ uint32_t val, n, p, best_n, best_p;
+ int retry;
+
+ sc = clknode_get_softc(clk);
+
+ best = cur = 0;
+
+ best = aw_clk_np_find_best(sc, fparent, fout,
+ &best_n, &best_p);
+
+ if ((flags & CLK_SET_DRYRUN) != 0) {
+ *fout = best;
+ *stop = 1;
+ return (0);
+ }
+
+ if ((best < *fout) &&
+ ((flags & CLK_SET_ROUND_DOWN) == 0)) {
+ *stop = 1;
+ return (ERANGE);
+ }
+ if ((best > *fout) &&
+ ((flags & CLK_SET_ROUND_UP) == 0)) {
+ *stop = 1;
+ return (ERANGE);
+ }
+
+ DEVICE_LOCK(clk);
+ READ4(clk, sc->offset, &val);
+
+ n = aw_clk_factor_get_value(&sc->n, best_n);
+ p = aw_clk_factor_get_value(&sc->p, best_p);
+ val &= ~sc->n.mask;
+ val &= ~sc->p.mask;
+ val |= n << sc->n.shift;
+ val |= p << sc->p.shift;
+
+ WRITE4(clk, sc->offset, val);
+ DEVICE_UNLOCK(clk);
+
+ if ((sc->flags & AW_CLK_HAS_LOCK) != 0) {
+ for (retry = 0; retry < sc->lock_retries; retry++) {
+ READ4(clk, sc->offset, &val);
+ if ((val & (1 << sc->lock_shift)) != 0)
+ break;
+ DELAY(1000);
+ }
+ }
+
+ *fout = best;
+ *stop = 1;
+
+ return (0);
+}
+
+static int
+aw_clk_np_recalc(struct clknode *clk, uint64_t *freq)
+{
+ struct aw_clk_np_sc *sc;
+ uint32_t val, n, p;
+
+ sc = clknode_get_softc(clk);
+
+ DEVICE_LOCK(clk);
+ READ4(clk, sc->offset, &val);
+ DEVICE_UNLOCK(clk);
+
+ n = aw_clk_get_factor(val, &sc->n);
+ p = aw_clk_get_factor(val, &sc->p);
+
+ *freq = *freq * n / p;
+
+ return (0);
+}
+
+static clknode_method_t aw_np_clknode_methods[] = {
+ /* Device interface */
+ CLKNODEMETHOD(clknode_init, aw_clk_np_init),
+ CLKNODEMETHOD(clknode_set_gate, aw_clk_np_set_gate),
+ CLKNODEMETHOD(clknode_recalc_freq, aw_clk_np_recalc),
+ CLKNODEMETHOD(clknode_set_freq, aw_clk_np_set_freq),
+ CLKNODEMETHOD_END
+};
+
+DEFINE_CLASS_1(aw_np_clknode, aw_np_clknode_class, aw_np_clknode_methods,
+ sizeof(struct aw_clk_np_sc), clknode_class);
+
+int
+aw_clk_np_register(struct clkdom *clkdom, struct aw_clk_np_def *clkdef)
+{
+ struct clknode *clk;
+ struct aw_clk_np_sc *sc;
+
+ clk = clknode_create(clkdom, &aw_np_clknode_class, &clkdef->clkdef);
+ if (clk == NULL)
+ return (1);
+
+ sc = clknode_get_softc(clk);
+
+ sc->offset = clkdef->offset;
+
+ sc->n.shift = clkdef->n.shift;
+ sc->n.width = clkdef->n.width;
+ sc->n.mask = ((1 << sc->n.width) - 1) << sc->n.shift;
+ sc->n.value = clkdef->n.value;
+ sc->n.flags = clkdef->n.flags;
+
+ sc->p.shift = clkdef->p.shift;
+ sc->p.width = clkdef->p.width;
+ sc->p.mask = ((1 << sc->p.width) - 1) << sc->p.shift;
+ sc->p.value = clkdef->p.value;
+ sc->p.flags = clkdef->p.flags;
+
+ sc->gate_shift = clkdef->gate_shift;
+
+ sc->lock_shift = clkdef->lock_shift;
+ sc->lock_retries = clkdef->lock_retries;
+
+ sc->flags = clkdef->flags;
+
+ clknode_register(clkdom, clk);
+
+ return (0);
+}
Added: head/sys/arm/allwinner/clkng/aw_clk_np.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/allwinner/clkng/aw_clk_np.h Mon Oct 14 21:47:20 2019
(r353525)
@@ -0,0 +1,51 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2019 Emmanuel Vadot <m...@freebsd.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef __AW_CLK_NP_H__
+#define __AW_CLK_NP_H__
+
+#include <dev/extres/clk/clk.h>
+
+struct aw_clk_np_def {
+ struct clknode_init_def clkdef;
+ uint32_t offset;
+
+ struct aw_clk_factor n;
+ struct aw_clk_factor p;
+
+ uint32_t gate_shift;
+ uint32_t lock_shift;
+ uint32_t lock_retries;
+
+ uint32_t flags;
+};
+
+int aw_clk_np_register(struct clkdom *clkdom, struct aw_clk_np_def *clkdef);
+
+#endif /* __AW_CLK_NP_H__ */
Modified: head/sys/conf/files.arm64
==============================================================================
--- head/sys/conf/files.arm64 Mon Oct 14 21:45:15 2019 (r353524)
+++ head/sys/conf/files.arm64 Mon Oct 14 21:47:20 2019 (r353525)
@@ -53,6 +53,7 @@ arm/allwinner/clkng/aw_clk_m.c optional
aw_ccu fdt
arm/allwinner/clkng/aw_clk_mipi.c optional aw_ccu fdt
arm/allwinner/clkng/aw_clk_nkmp.c optional aw_ccu fdt
arm/allwinner/clkng/aw_clk_nm.c optional aw_ccu fdt
+arm/allwinner/clkng/aw_clk_np.c optional aw_ccu fdt
arm/allwinner/clkng/aw_clk_prediv_mux.c optional aw_ccu fdt
arm/allwinner/clkng/ccu_a64.c optional soc_allwinner_a64
aw_ccu fdt
arm/allwinner/clkng/ccu_h3.c optional soc_allwinner_h5 aw_ccu
fdt
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