Index: head/sys/arm/ti/ti_scm_syscon.c =================================================================== --- head/sys/arm/ti/ti_scm_syscon.c (revision 368020) +++ head/sys/arm/ti/ti_scm_syscon.c (revision 368021) @@ -1,293 +1,298 @@ /*- * Copyright (c) 2019 Emmanuel Vadot * * Copyright (c) 2020 Oskar Holmlund * * 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. * * $FreeBSD$ */ /* Based on sys/arm/ti/ti_sysc.c */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "syscon_if.h" #include #include "clkdev_if.h" +#include + #if 0 #define DPRINTF(dev, msg...) device_printf(dev, msg) #else #define DPRINTF(dev, msg...) #endif MALLOC_DECLARE(M_SYSCON); struct ti_scm_syscon_softc { struct simplebus_softc sc_simplebus; device_t dev; struct syscon * syscon; struct resource * res[1]; bus_space_tag_t bst; bus_space_handle_t bsh; struct mtx mtx; }; static struct resource_spec ti_scm_syscon_res_spec[] = { { SYS_RES_MEMORY, 0, RF_ACTIVE | RF_SHAREABLE }, { -1, 0 } }; /* Device */ static struct ofw_compat_data compat_data[] = { { "syscon", 1 }, { NULL, 0 } }; /* --- dev/extres/syscon syscon_method_t interface --- */ static int ti_scm_syscon_write_4(struct syscon *syscon, bus_size_t offset, uint32_t val) { struct ti_scm_syscon_softc *sc; sc = device_get_softc(syscon->pdev); DPRINTF(sc->dev, "offset=%lx write %x\n", offset, val); mtx_lock(&sc->mtx); bus_space_write_4(sc->bst, sc->bsh, offset, val); mtx_unlock(&sc->mtx); return (0); } static uint32_t ti_scm_syscon_read_4(struct syscon *syscon, bus_size_t offset) { struct ti_scm_syscon_softc *sc; uint32_t val; sc = device_get_softc(syscon->pdev); mtx_lock(&sc->mtx); val = bus_space_read_4(sc->bst, sc->bsh, offset); mtx_unlock(&sc->mtx); DPRINTF(sc->dev, "offset=%lx Read %x\n", offset, val); return (val); } static int ti_scm_syscon_modify_4(struct syscon *syscon, bus_size_t offset, uint32_t clr, uint32_t set) { struct ti_scm_syscon_softc *sc; uint32_t reg; sc = device_get_softc(syscon->pdev); mtx_lock(&sc->mtx); reg = bus_space_read_4(sc->bst, sc->bsh, offset); reg &= ~clr; reg |= set; bus_space_write_4(sc->bst, sc->bsh, offset, reg); mtx_unlock(&sc->mtx); DPRINTF(sc->dev, "offset=%lx reg: %x (clr %x set %x)\n", offset, reg, clr, set); return (0); } static syscon_method_t ti_scm_syscon_reg_methods[] = { SYSCONMETHOD(syscon_read_4, ti_scm_syscon_read_4), SYSCONMETHOD(syscon_write_4, ti_scm_syscon_write_4), SYSCONMETHOD(syscon_modify_4, ti_scm_syscon_modify_4), SYSCONMETHOD_END }; DEFINE_CLASS_1(ti_scm_syscon_reg, ti_scm_syscon_reg_class, ti_scm_syscon_reg_methods, 0, syscon_class); /* device interface */ static int ti_scm_syscon_probe(device_t dev) { if (!ofw_bus_status_okay(dev)) + return (ENXIO); + + if (!ti_soc_is_supported()) return (ENXIO); if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0) return (ENXIO); device_set_desc(dev, "TI OMAP Control Module Syscon"); return(BUS_PROBE_DEFAULT); } static int ti_scm_syscon_attach(device_t dev) { struct ti_scm_syscon_softc *sc; phandle_t node, child; int err; sc = device_get_softc(dev); sc->dev = dev; if (bus_alloc_resources(dev, ti_scm_syscon_res_spec, sc->res)) { device_printf(sc->dev, "Cant allocate resources\n"); return (ENXIO); } sc->dev = dev; sc->bst = rman_get_bustag(sc->res[0]); sc->bsh = rman_get_bushandle(sc->res[0]); mtx_init(&sc->mtx, device_get_nameunit(sc->dev), NULL, MTX_DEF); node = ofw_bus_get_node(sc->dev); /* dev/extres/syscon interface */ sc->syscon = syscon_create_ofw_node(dev, &ti_scm_syscon_reg_class, node); if (sc->syscon == NULL) { device_printf(dev, "Failed to create/register syscon\n"); return (ENXIO); } simplebus_init(sc->dev, node); err = bus_generic_probe(sc->dev); for (child = OF_child(node); child != 0; child = OF_peer(child)) { simplebus_add_device(sc->dev, child, 0, NULL, -1, NULL); } return (bus_generic_attach(sc->dev)); } /* syscon interface */ static int ti_scm_syscon_get_handle(device_t dev, struct syscon **syscon) { struct ti_scm_syscon_softc *sc; sc = device_get_softc(dev); *syscon = sc->syscon; if (*syscon == NULL) return (ENODEV); return (0); } /* clkdev interface */ static int ti_scm_syscon_clk_write_4(device_t dev, bus_addr_t addr, uint32_t val) { struct ti_scm_syscon_softc *sc; sc = device_get_softc(dev); DPRINTF(sc->dev, "offset=%lx write %x\n", addr, val); bus_space_write_4(sc->bst, sc->bsh, addr, val); return (0); } static int ti_scm_syscon_clk_read_4(device_t dev, bus_addr_t addr, uint32_t *val) { struct ti_scm_syscon_softc *sc; sc = device_get_softc(dev); *val = bus_space_read_4(sc->bst, sc->bsh, addr); DPRINTF(sc->dev, "offset=%lx Read %x\n", addr, *val); return (0); } static int ti_scm_syscon_clk_modify_4(device_t dev, bus_addr_t addr, uint32_t clr, uint32_t set) { struct ti_scm_syscon_softc *sc; uint32_t reg; sc = device_get_softc(dev); reg = bus_space_read_4(sc->bst, sc->bsh, addr); reg &= ~clr; reg |= set; bus_space_write_4(sc->bst, sc->bsh, addr, reg); DPRINTF(sc->dev, "offset=%lx reg: %x (clr %x set %x)\n", addr, reg, clr, set); return (0); } static void ti_scm_syscon_clk_device_lock(device_t dev) { struct ti_scm_syscon_softc *sc; sc = device_get_softc(dev); mtx_lock(&sc->mtx); } static void ti_scm_syscon_clk_device_unlock(device_t dev) { struct ti_scm_syscon_softc *sc; sc = device_get_softc(dev); mtx_unlock(&sc->mtx); } static device_method_t ti_scm_syscon_methods[] = { DEVMETHOD(device_probe, ti_scm_syscon_probe), DEVMETHOD(device_attach, ti_scm_syscon_attach), /* syscon interface */ DEVMETHOD(syscon_get_handle, ti_scm_syscon_get_handle), /* clkdev interface */ DEVMETHOD(clkdev_write_4, ti_scm_syscon_clk_write_4), DEVMETHOD(clkdev_read_4, ti_scm_syscon_clk_read_4), DEVMETHOD(clkdev_modify_4, ti_scm_syscon_clk_modify_4), DEVMETHOD(clkdev_device_lock, ti_scm_syscon_clk_device_lock), DEVMETHOD(clkdev_device_unlock, ti_scm_syscon_clk_device_unlock), DEVMETHOD_END }; DEFINE_CLASS_1(ti_scm_syscon, ti_scm_syscon_driver, ti_scm_syscon_methods, sizeof(struct ti_scm_syscon_softc), simplebus_driver); static devclass_t ti_scm_syscon_devclass; EARLY_DRIVER_MODULE(ti_scm_syscon, simplebus, ti_scm_syscon_driver, ti_scm_syscon_devclass, 0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE); MODULE_VERSION(ti_scm_syscon, 1); MODULE_DEPEND(ti_scm_syscon, ti_scm, 1, 1, 1);