ls1046a_clkgen.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2020 Alstom Group.
    5  * Copyright (c) 2020 Semihalf.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD$");
   31 
   32 #include <sys/param.h>
   33 #include <sys/bus.h>
   34 #include <sys/kernel.h>
   35 #include <sys/module.h>
   36 #include <sys/mutex.h>
   37 #include <sys/rman.h>
   38 #include <machine/bus.h>
   39 
   40 #include <dev/fdt/simplebus.h>
   41 
   42 #include <dev/ofw/ofw_bus.h>
   43 #include <dev/ofw/ofw_bus_subr.h>
   44 
   45 #include <dev/extres/clk/clk_fixed.h>
   46 
   47 #include <arm64/qoriq/clk/qoriq_clkgen.h>
   48 
   49 static uint8_t ls1046a_pltfrm_pll_divs[] = {
   50         2, 4, 0
   51 };
   52 
   53 static struct qoriq_clk_pll_def ls1046a_pltfrm_pll = {
   54         .clkdef = {
   55                 .name = "ls1046a_platform_pll",
   56                 .id = QORIQ_CLK_ID(QORIQ_TYPE_PLATFORM_PLL, 0),
   57                 .flags = 0
   58         },
   59         .offset = 0xC00,
   60         .shift = 1,
   61         .mask = 0x7E,
   62         .dividers = ls1046a_pltfrm_pll_divs,
   63         .flags = 0
   64 };
   65 
   66 static const uint8_t ls1046a_cga1_pll_divs[] = {
   67         2, 3, 4, 0
   68 };
   69 
   70 static struct qoriq_clk_pll_def ls1046a_cga1_pll = {
   71         .clkdef = {
   72                 .name = "ls1046a_cga_pll1",
   73                 .id = QORIQ_CLK_ID(QORIQ_TYPE_INTERNAL, 0),
   74                 .flags = 0
   75         },
   76         .offset = 0x800,
   77         .shift = 1,
   78         .mask = 0x1FE,
   79         .dividers = ls1046a_cga1_pll_divs,
   80         .flags = QORIQ_CLK_PLL_HAS_KILL_BIT
   81 };
   82 
   83 static struct qoriq_clk_pll_def ls1046a_cga2_pll = {
   84         .clkdef = {
   85                 .name = "ls1046a_cga_pll2",
   86                 .id = QORIQ_CLK_ID(QORIQ_TYPE_INTERNAL, 20),
   87                 .flags = 0
   88         },
   89         .offset = 0x820,
   90         .shift = 1,
   91         .mask = 0x1FE,
   92         .dividers = ls1046a_cga1_pll_divs,
   93         .flags = QORIQ_CLK_PLL_HAS_KILL_BIT
   94 };
   95 
   96 static struct qoriq_clk_pll_def *ls1046a_cga_plls[] = {
   97         &ls1046a_cga1_pll,
   98         &ls1046a_cga2_pll
   99 };
  100 
  101 static const char *ls1046a_cmux0_parent_names[] = {
  102         "ls1046a_cga_pll1",
  103         NULL,
  104         "ls1046a_cga_pll1_div2",
  105         NULL,
  106         "ls1046a_cga_pll2",
  107         NULL,
  108         "ls1046a_cga_pll2_div2"
  109 };
  110 
  111 static struct clk_mux_def ls1046a_cmux0 = {
  112         .clkdef = {
  113                 .name = "ls1046a_cmux0",
  114                 .id = QORIQ_CLK_ID(QORIQ_TYPE_CMUX, 0),
  115                 .parent_names = ls1046a_cmux0_parent_names,
  116                 .parent_cnt = nitems(ls1046a_cmux0_parent_names),
  117                 .flags = 0
  118         },
  119         .offset = 0,
  120         .shift = 27,
  121         .width = 4,
  122         .mux_flags = 0
  123 };
  124 
  125 static const char *ls1046a_hwaccel1_parent_names[] = {
  126         NULL,
  127         NULL,
  128         "ls1046a_cga_pll1_div2",
  129         "ls1046a_cga_pll1_div3",
  130         "ls1046a_cga_pll1_div4",
  131         "ls1046a_platform_pll",
  132         "ls1046a_cga_pll2_div2",
  133         "ls1046a_cga_pll2_div3"
  134 };
  135 
  136 static const char *ls1046a_hwaccel2_parent_names[] = {
  137         NULL,
  138         "ls1046a_cga_pll2",
  139         "ls1046a_cga_pll2_div2",
  140         "ls1046a_cga_pll2_div3",
  141         NULL,
  142         NULL,
  143         "ls1046a_cga_pll1_div2"
  144 };
  145 
  146 static struct clk_mux_def ls1046a_hwaccel1 = {
  147         .clkdef = {
  148                 .name = "ls1046a_hwaccel1",
  149                 .id = QORIQ_CLK_ID(QORIQ_TYPE_HWACCEL, 0),
  150                 .parent_names = ls1046a_hwaccel1_parent_names,
  151                 .parent_cnt = nitems(ls1046a_hwaccel1_parent_names),
  152                 .flags = 0
  153         },
  154         .offset = 0x10,
  155         .shift = 27,
  156         .width = 4,
  157         .mux_flags = 0
  158 };
  159 
  160 static struct clk_mux_def ls1046a_hwaccel2 = {
  161         .clkdef = {
  162                 .name = "ls1046a_hwaccel2",
  163                 .id = QORIQ_CLK_ID(QORIQ_TYPE_HWACCEL, 1),
  164                 .parent_names = ls1046a_hwaccel2_parent_names,
  165                 .parent_cnt = nitems(ls1046a_hwaccel2_parent_names),
  166                 .flags = 0
  167         },
  168         .offset = 0x30,
  169         .shift = 27,
  170         .width = 4,
  171         .mux_flags = 0
  172 };
  173 
  174 static struct clk_mux_def *ls1046a_mux_nodes[] = {
  175         &ls1046a_cmux0,
  176         &ls1046a_hwaccel1,
  177         &ls1046a_hwaccel2
  178 };
  179 
  180 const char *ls1046a_fman_srcs[] = {
  181         "ls1046a_hwaccel1"
  182 };
  183 
  184 static int ls1046a_clkgen_probe(device_t);
  185 static int ls1046a_clkgen_attach(device_t);
  186 
  187 static device_method_t ls1046a_clkgen_methods[] = {
  188         DEVMETHOD(device_probe,         ls1046a_clkgen_probe),
  189         DEVMETHOD(device_attach,        ls1046a_clkgen_attach),
  190 
  191         DEVMETHOD_END
  192 };
  193 
  194 DEFINE_CLASS_1(ls1046a_clkgen, ls1046a_clkgen_driver, ls1046a_clkgen_methods,
  195     sizeof(struct qoriq_clkgen_softc), qoriq_clkgen_driver);
  196 
  197 EARLY_DRIVER_MODULE(ls1046a_clkgen, simplebus, ls1046a_clkgen_driver, 0, 0,
  198     BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE);
  199 
  200 static int
  201 ls1046a_fman_init(device_t dev)
  202 {
  203         struct qoriq_clkgen_softc *sc;
  204         struct clk_fixed_def def;
  205         int error;
  206 
  207         sc = device_get_softc(dev);
  208 
  209         def.clkdef.name = "ls1046a_fman",
  210         def.clkdef.id = QORIQ_CLK_ID(QORIQ_TYPE_FMAN, 0),
  211         def.clkdef.parent_names = ls1046a_fman_srcs;
  212         def.clkdef.parent_cnt = nitems(ls1046a_fman_srcs);
  213         def.clkdef.flags = 0;
  214         def.freq = 0;
  215         def.mult = 1;
  216         def.div = 1;
  217         def.fixed_flags = 0;
  218 
  219         error = clknode_fixed_register(sc->clkdom, &def);
  220         return (error);
  221 }
  222 
  223 static int
  224 ls1046a_clkgen_probe(device_t dev)
  225 {
  226 
  227         if (!ofw_bus_status_okay(dev))
  228                 return (ENXIO);
  229 
  230         if(!ofw_bus_is_compatible(dev, "fsl,ls1046a-clockgen"))
  231                 return (ENXIO);
  232 
  233         device_set_desc(dev, "LS1046A clockgen");
  234         return (BUS_PROBE_DEFAULT);
  235 }
  236 
  237 static int
  238 ls1046a_clkgen_attach(device_t dev)
  239 {
  240         struct qoriq_clkgen_softc *sc;
  241 
  242         sc = device_get_softc(dev);
  243 
  244         sc->pltfrm_pll_def = &ls1046a_pltfrm_pll;
  245         sc->cga_pll = ls1046a_cga_plls;
  246         sc->cga_pll_num = nitems(ls1046a_cga_plls);
  247         sc->mux = ls1046a_mux_nodes;
  248         sc->mux_num = nitems(ls1046a_mux_nodes);
  249         sc->init_func = ls1046a_fman_init;
  250         sc->flags = 0;
  251 
  252         return (qoriq_clkgen_attach(dev));
  253 }

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FreeBSD/Linux Kernel Cross Reference sys/arm64/qoriq/clk/ls1046a_clkgen.c

FreeBSD/Linux Kernel Cross Reference
sys/arm64/qoriq/clk/ls1046a_clkgen.c