FreeBSD/Linux Kernel Cross Reference
sys/arm/mv/clk/a37x0_sb_periph_clk_driver.c

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2021 Semihalf.
      *
      * 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 <sys/param.h>
    #include <sys/bus.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    #include <sys/mutex.h>
    #include <sys/rman.h>
    #include <machine/bus.h>
    
    #include <dev/fdt/simplebus.h>
    
    #include <dev/extres/clk/clk.h>
    #include <dev/extres/clk/clk_fixed.h>
    
    #include <dev/ofw/ofw_bus.h>
    #include <dev/ofw/ofw_bus_subr.h>
    
    #include "clkdev_if.h"
    #include "periph.h"
    
    #define SB_DEV_COUNT 14
    
    static struct a37x0_periph_clknode_def a37x0_sb_devices [] = {
            CLK_MDD("gbe_50", 0, 6, 1, DIV_SEL2, DIV_SEL2, 6, 9,
                "tbg_mux_gbe_50_120", "div1_gbe_50_121", "div2_gbe_50_122"),
            CLK_MDD("gbe_core", 1, 8, 5, DIV_SEL1, DIV_SEL1, 18, 21,
                "tbg_mux_gbe_core_124", "div1_gbe_core_125", "div2_gbe_core_126"),
            CLK_MDD("gbe_125", 2, 10, 3, DIV_SEL1, DIV_SEL1, 6, 9,
                "tbg_mux_gbe_125_128", "div1_gbe_50_129", "div2_gbe_50_130"),
            CLK_GATE("gbe1_50", 3, 0, "gbe_50"),
            CLK_GATE("gbe0_50", 4, 1, "gbe_50"),
            CLK_GATE("gbe1_125", 5, 2, "gbe_125"),
            CLK_GATE("gbe0_125", 6, 3, "gbe_125"),
            CLK_MUX_GATE("gbe1_core", 7, 4, 13, "gbe_core",
                "mux_gbe1_core_136", "fixed_gbe1_core_138"),
            CLK_MUX_GATE("gbe0_core", 8, 5, 14, "gbe_core",
                "mux_gbe0_core_139", "fixed_gbe0_core_141"),
            CLK_MUX_GATE("gbe_bm", 9, 12, 12, "gbe_core",
                "mux_gbe_bm_136", "fixed_gbe_bm_138"),
            CLK_FULL_DD("sdio", 10, 11, 14, 7, DIV_SEL0, DIV_SEL0, 3, 6,
                "tbg_mux_sdio_139", "div1_sdio_140", "div2_sdio_141",
                "clk_mux_sdio_142"),
            CLK_FULL_DD("usb32_usb2_sys", 11, 16, 16, 8, DIV_SEL0, DIV_SEL0, 9, 12,
                "tbg_mux_usb32_usb2_sys_144", "div1_usb32_usb2_sys_145",
                "div2_usb32_usb2_sys_146", "clk_mux_usb32_usb2_sys_147"),
            CLK_FULL_DD("usb32_ss_sys", 12, 17, 18, 9, DIV_SEL0, DIV_SEL0, 15, 18,
                "tbg_mux_usb32_ss_sys_149", "div1_usb32_ss_sys_150",
                "div2_usb32_ss_sys_151", "clk_mux_usb32_ss_sys_152"),
            CLK_GATE("pcie", 13, 14, "gbe_core")
    };
    
    static struct ofw_compat_data a37x0_sb_periph_compat_data[] = {
            { "marvell,armada-3700-periph-clock-sb",        1 },
            { NULL,                                         0 }
    };
    
    static int a37x0_sb_periph_clk_attach(device_t);
    static int a37x0_sb_periph_clk_probe(device_t);
    
    static device_method_t a37x0_sb_periph_clk_methods[] = {
            DEVMETHOD(clkdev_device_unlock,         a37x0_periph_clk_device_unlock),
            DEVMETHOD(clkdev_device_lock,           a37x0_periph_clk_device_lock),
            DEVMETHOD(clkdev_read_4,                a37x0_periph_clk_read_4),
    
            DEVMETHOD(device_attach,                a37x0_sb_periph_clk_attach),
            DEVMETHOD(device_detach,                a37x0_periph_clk_detach),
            DEVMETHOD(device_probe,                 a37x0_sb_periph_clk_probe),
    
            DEVMETHOD_END
    };
    
    static driver_t a37x0_sb_periph_driver = {
            "a37x0_sb_periph_driver",
           a37x0_sb_periph_clk_methods,
           sizeof(struct a37x0_periph_clk_softc)
   };
   
   EARLY_DRIVER_MODULE(a37x0_sb_periph, simplebus, a37x0_sb_periph_driver, 0, 0,
       BUS_PASS_TIMER + BUS_PASS_ORDER_LATE);
   
   static int
   a37x0_sb_periph_clk_attach(device_t dev)
   {
           struct a37x0_periph_clk_softc *sc;
   
           sc = device_get_softc(dev);
           sc->devices = a37x0_sb_devices;
           sc->device_count = SB_DEV_COUNT;
   
           return (a37x0_periph_clk_attach(dev));
   }
   
   static int
   a37x0_sb_periph_clk_probe(device_t dev)
   {
   
           if (!ofw_bus_status_okay(dev))
                   return (ENXIO);
   
           if (!ofw_bus_search_compatible(dev,
               a37x0_sb_periph_compat_data)->ocd_data)
                   return (ENXIO);
   
           device_set_desc(dev, "marvell,armada-3700-sb-periph-clock");
   
           return (BUS_PROBE_DEFAULT);
   }

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