diff --git a/sys/dev/clk/clk_fixed.c b/sys/dev/clk/clk_fixed.c index 3f828b24c2b2..7aec5b92dfe0 100644 --- a/sys/dev/clk/clk_fixed.c +++ b/sys/dev/clk/clk_fixed.c @@ -1,289 +1,294 @@ /*- * Copyright 2016 Michal Meloun * All rights reserved. * * 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. */ #include #include "opt_platform.h" #include #include #include #include #include #include #include #include #include #include #include #ifdef FDT #include #include #endif #include #define CLK_TYPE_FIXED 1 #define CLK_TYPE_FIXED_FACTOR 2 static int clknode_fixed_init(struct clknode *clk, device_t dev); static int clknode_fixed_recalc(struct clknode *clk, uint64_t *freq); static int clknode_fixed_set_freq(struct clknode *clk, uint64_t fin, uint64_t *fout, int flags, int *stop); struct clknode_fixed_sc { int fixed_flags; uint64_t freq; uint32_t mult; uint32_t div; }; static clknode_method_t clknode_fixed_methods[] = { /* Device interface */ CLKNODEMETHOD(clknode_init, clknode_fixed_init), CLKNODEMETHOD(clknode_recalc_freq, clknode_fixed_recalc), CLKNODEMETHOD(clknode_set_freq, clknode_fixed_set_freq), CLKNODEMETHOD_END }; DEFINE_CLASS_1(clknode_fixed, clknode_fixed_class, clknode_fixed_methods, sizeof(struct clknode_fixed_sc), clknode_class); static int clknode_fixed_init(struct clknode *clk, device_t dev) { struct clknode_fixed_sc *sc; sc = clknode_get_softc(clk); if (sc->freq == 0) clknode_init_parent_idx(clk, 0); return(0); } static int clknode_fixed_recalc(struct clknode *clk, uint64_t *freq) { struct clknode_fixed_sc *sc; sc = clknode_get_softc(clk); if ((sc->mult != 0) && (sc->div != 0)) *freq = (*freq / sc->div) * sc->mult; else *freq = sc->freq; return (0); } static int clknode_fixed_set_freq(struct clknode *clk, uint64_t fin, uint64_t *fout, int flags, int *stop) { struct clknode_fixed_sc *sc; sc = clknode_get_softc(clk); if (sc->mult == 0 || sc->div == 0) { /* Fixed frequency clock. */ *stop = 1; if (*fout != sc->freq) return (ERANGE); return (0); } /* Fixed factor clock. */ *stop = 0; *fout = (*fout / sc->mult) * sc->div; return (0); } int clknode_fixed_register(struct clkdom *clkdom, struct clk_fixed_def *clkdef) { struct clknode *clk; struct clknode_fixed_sc *sc; clk = clknode_create(clkdom, &clknode_fixed_class, &clkdef->clkdef); if (clk == NULL) return (1); sc = clknode_get_softc(clk); sc->fixed_flags = clkdef->fixed_flags; sc->freq = clkdef->freq; sc->mult = clkdef->mult; sc->div = clkdef->div; clknode_register(clkdom, clk); return (0); } #ifdef FDT static struct ofw_compat_data compat_data[] = { {"fixed-clock", CLK_TYPE_FIXED}, {"fixed-factor-clock", CLK_TYPE_FIXED_FACTOR}, {NULL, 0}, }; struct clk_fixed_softc { device_t dev; struct clkdom *clkdom; }; static int clk_fixed_probe(device_t dev) { intptr_t clk_type; clk_type = ofw_bus_search_compatible(dev, compat_data)->ocd_data; switch (clk_type) { case CLK_TYPE_FIXED: if (OF_hasprop(ofw_bus_get_node(dev), "clock-frequency") == 0) { device_printf(dev, "clock-fixed has no clock-frequency\n"); return (ENXIO); } device_set_desc(dev, "Fixed clock"); - return (BUS_PROBE_DEFAULT); + break; case CLK_TYPE_FIXED_FACTOR: device_set_desc(dev, "Fixed factor clock"); - return (BUS_PROBE_DEFAULT); + break; default: return (ENXIO); } + + if (!bootverbose) + device_quiet(dev); + + return (BUS_PROBE_DEFAULT); } static int clk_fixed_init_fixed(struct clk_fixed_softc *sc, phandle_t node, struct clk_fixed_def *def) { uint32_t freq; int rv; def->clkdef.id = 1; rv = OF_getencprop(node, "clock-frequency", &freq, sizeof(freq)); if (rv <= 0) return (ENXIO); def->freq = freq; return (0); } static int clk_fixed_init_fixed_factor(struct clk_fixed_softc *sc, phandle_t node, struct clk_fixed_def *def) { int rv; clk_t parent; def->clkdef.id = 1; rv = OF_getencprop(node, "clock-mult", &def->mult, sizeof(def->mult)); if (rv <= 0) return (ENXIO); rv = OF_getencprop(node, "clock-div", &def->div, sizeof(def->div)); if (rv <= 0) return (ENXIO); /* Get name of parent clock */ rv = clk_get_by_ofw_index(sc->dev, 0, 0, &parent); if (rv != 0) return (ENXIO); def->clkdef.parent_names = malloc(sizeof(char *), M_OFWPROP, M_WAITOK); def->clkdef.parent_names[0] = clk_get_name(parent); def->clkdef.parent_cnt = 1; clk_release(parent); return (0); } static int clk_fixed_attach(device_t dev) { struct clk_fixed_softc *sc; intptr_t clk_type; phandle_t node; struct clk_fixed_def def; int rv; sc = device_get_softc(dev); sc->dev = dev; node = ofw_bus_get_node(dev); clk_type = ofw_bus_search_compatible(dev, compat_data)->ocd_data; bzero(&def, sizeof(def)); if (clk_type == CLK_TYPE_FIXED) rv = clk_fixed_init_fixed(sc, node, &def); else if (clk_type == CLK_TYPE_FIXED_FACTOR) rv = clk_fixed_init_fixed_factor(sc, node, &def); else rv = ENXIO; if (rv != 0) { device_printf(sc->dev, "Cannot FDT parameters.\n"); goto fail; } rv = clk_parse_ofw_clk_name(dev, node, &def.clkdef.name); if (rv != 0) { device_printf(sc->dev, "Cannot parse clock name.\n"); goto fail; } sc->clkdom = clkdom_create(dev); KASSERT(sc->clkdom != NULL, ("Clock domain is NULL")); rv = clknode_fixed_register(sc->clkdom, &def); if (rv != 0) { device_printf(sc->dev, "Cannot register fixed clock.\n"); rv = ENXIO; goto fail; } rv = clkdom_finit(sc->clkdom); if (rv != 0) { device_printf(sc->dev, "Clk domain finit fails.\n"); rv = ENXIO; goto fail; } if (bootverbose) clkdom_dump(sc->clkdom); OF_prop_free(__DECONST(char *, def.clkdef.name)); OF_prop_free(def.clkdef.parent_names); return (bus_generic_attach(dev)); fail: OF_prop_free(__DECONST(char *, def.clkdef.name)); OF_prop_free(def.clkdef.parent_names); return (rv); } static device_method_t clk_fixed_methods[] = { /* Device interface */ DEVMETHOD(device_probe, clk_fixed_probe), DEVMETHOD(device_attach, clk_fixed_attach), DEVMETHOD_END }; DEFINE_CLASS_0(clk_fixed, clk_fixed_driver, clk_fixed_methods, sizeof(struct clk_fixed_softc)); EARLY_DRIVER_MODULE(clk_fixed, simplebus, clk_fixed_driver, 0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE); MODULE_VERSION(clk_fixed, 1); #endif