Index: head/sys/arm/allwinner/aw_ccu.c =================================================================== --- head/sys/arm/allwinner/aw_ccu.c (revision 351098) +++ head/sys/arm/allwinner/aw_ccu.c (revision 351099) @@ -1,255 +1,255 @@ /*- * Copyright (c) 2016 Jared McNeill * 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 ``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. * * $FreeBSD$ */ /* * Allwinner oscillator clock */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include "clkdev_if.h" #define CCU_BASE 0x01c20000 #define CCU_SIZE 0x400 struct aw_ccu_softc { struct simplebus_softc sc; bus_space_tag_t bst; bus_space_handle_t bsh; struct mtx mtx; int flags; }; static struct ofw_compat_data compat_data[] = { { "allwinner,sun7i-a20", 1 }, { "allwinner,sun6i-a31", 1 }, { "allwinner,sun6i-a31s", 1 }, { NULL, 0 } }; static int aw_ccu_check_addr(struct aw_ccu_softc *sc, bus_addr_t addr, bus_space_handle_t *pbsh, bus_size_t *poff) { if (addr >= CCU_BASE && addr < (CCU_BASE + CCU_SIZE)) { *poff = addr - CCU_BASE; *pbsh = sc->bsh; return (0); } return (EINVAL); } static int aw_ccu_write_4(device_t dev, bus_addr_t addr, uint32_t val) { struct aw_ccu_softc *sc; bus_space_handle_t bsh; bus_size_t reg; sc = device_get_softc(dev); if (aw_ccu_check_addr(sc, addr, &bsh, ®) != 0) return (EINVAL); mtx_assert(&sc->mtx, MA_OWNED); bus_space_write_4(sc->bst, bsh, reg, val); return (0); } static int aw_ccu_read_4(device_t dev, bus_addr_t addr, uint32_t *val) { struct aw_ccu_softc *sc; bus_space_handle_t bsh; bus_size_t reg; sc = device_get_softc(dev); if (aw_ccu_check_addr(sc, addr, &bsh, ®) != 0) return (EINVAL); mtx_assert(&sc->mtx, MA_OWNED); *val = bus_space_read_4(sc->bst, bsh, reg); return (0); } static int aw_ccu_modify_4(device_t dev, bus_addr_t addr, uint32_t clr, uint32_t set) { struct aw_ccu_softc *sc; bus_space_handle_t bsh; bus_size_t reg; uint32_t val; sc = device_get_softc(dev); if (aw_ccu_check_addr(sc, addr, &bsh, ®) != 0) return (EINVAL); mtx_assert(&sc->mtx, MA_OWNED); val = bus_space_read_4(sc->bst, bsh, reg); val &= ~clr; val |= set; bus_space_write_4(sc->bst, bsh, reg, val); return (0); } static void aw_ccu_device_lock(device_t dev) { struct aw_ccu_softc *sc; sc = device_get_softc(dev); mtx_lock(&sc->mtx); } static void aw_ccu_device_unlock(device_t dev) { struct aw_ccu_softc *sc; sc = device_get_softc(dev); mtx_unlock(&sc->mtx); } static const struct ofw_compat_data * aw_ccu_search_compatible(void) { const struct ofw_compat_data *compat; phandle_t root; root = OF_finddevice("/"); for (compat = compat_data; compat->ocd_str != NULL; compat++) if (ofw_bus_node_is_compatible(root, compat->ocd_str)) break; return (compat); } static int aw_ccu_probe(device_t dev) { const char *name; name = ofw_bus_get_name(dev); if (name == NULL || strcmp(name, "clocks") != 0) return (ENXIO); if (aw_ccu_search_compatible()->ocd_data == 0) return (ENXIO); device_set_desc(dev, "Allwinner Clock Control Unit"); return (BUS_PROBE_SPECIFIC); } static int aw_ccu_attach(device_t dev) { struct aw_ccu_softc *sc; phandle_t node, child; device_t cdev; int error; sc = device_get_softc(dev); node = ofw_bus_get_node(dev); simplebus_init(dev, node); sc->flags = aw_ccu_search_compatible()->ocd_data; /* * Map registers. The DT doesn't have a "reg" property * for the /clocks node and child nodes have conflicting "reg" * properties. */ sc->bst = bus_get_bus_tag(dev); error = bus_space_map(sc->bst, CCU_BASE, CCU_SIZE, 0, &sc->bsh); if (error != 0) { device_printf(dev, "couldn't map CCU: %d\n", error); return (error); } mtx_init(&sc->mtx, device_get_nameunit(dev), NULL, MTX_DEF); /* Attach child devices */ for (child = OF_child(node); child > 0; child = OF_peer(child)) { cdev = simplebus_add_device(dev, child, 0, NULL, -1, NULL); if (cdev != NULL) device_probe_and_attach(cdev); } return (bus_generic_attach(dev)); } static device_method_t aw_ccu_methods[] = { /* Device interface */ DEVMETHOD(device_probe, aw_ccu_probe), DEVMETHOD(device_attach, aw_ccu_attach), /* clkdev interface */ DEVMETHOD(clkdev_write_4, aw_ccu_write_4), DEVMETHOD(clkdev_read_4, aw_ccu_read_4), DEVMETHOD(clkdev_modify_4, aw_ccu_modify_4), DEVMETHOD(clkdev_device_lock, aw_ccu_device_lock), DEVMETHOD(clkdev_device_unlock, aw_ccu_device_unlock), DEVMETHOD_END }; DEFINE_CLASS_1(aw_ccu, aw_ccu_driver, aw_ccu_methods, sizeof(struct aw_ccu_softc), simplebus_driver); static devclass_t aw_ccu_devclass; EARLY_DRIVER_MODULE(aw_ccu, simplebus, aw_ccu_driver, aw_ccu_devclass, - 0, 0, BUS_PASS_RESOURCE + BUS_PASS_ORDER_MIDDLE); + 0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE); MODULE_VERSION(aw_ccu, 1);