/* $NetBSD: ti_com.c,v 1.4.4.1 2019/11/27 13:46:44 martin Exp $ */ /*- * Copyright (c) 2017 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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 __KERNEL_RCSID(1, "$NetBSD: ti_com.c,v 1.4.4.1 2019/11/27 13:46:44 martin Exp $"); #include #include #include #include #include #include #include #include #include #include static int ti_com_match(device_t, cfdata_t, void *); static void ti_com_attach(device_t, device_t, void *); static const char * const compatible[] = { "ti,am3352-uart", "ti,omap3-uart", NULL }; struct ti_com_softc { struct com_softc ssc_sc; void *ssc_ih; }; CFATTACH_DECL_NEW(ti_com, sizeof(struct ti_com_softc), ti_com_match, ti_com_attach, NULL, NULL); static int ti_com_match(device_t parent, cfdata_t cf, void *aux) { struct fdt_attach_args * const faa = aux; return of_match_compatible(faa->faa_phandle, compatible); } static void ti_com_attach(device_t parent, device_t self, void *aux) { struct ti_com_softc * const ssc = device_private(self); struct com_softc * const sc = &ssc->ssc_sc; struct fdt_attach_args * const faa = aux; const int phandle = faa->faa_phandle; bus_space_handle_t bsh; bus_space_tag_t bst; char intrstr[128]; bus_addr_t addr; bus_size_t size; int error; if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { aprint_error(": couldn't get registers\n"); return; } bst = faa->faa_a4x_bst; sc->sc_dev = self; if (of_getprop_uint32(phandle, "clock-frequency", &sc->sc_frequency) != 0) { aprint_error(": missing 'clock-frequency' property\n"); return; } sc->sc_type = COM_TYPE_NORMAL; error = bus_space_map(bst, addr, size, 0, &bsh); if (error) { aprint_error(": couldn't map %#llx: %d", (uint64_t)addr, error); return; } if (ti_prcm_enable_hwmod(phandle, 0) != 0) { aprint_error(": couldn't enable module\n"); return; } com_init_regs(&sc->sc_regs, bst, bsh, addr); com_attach_subr(sc); aprint_naive("\n"); if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) { aprint_error_dev(self, "failed to decode interrupt\n"); return; } ssc->ssc_ih = fdtbus_intr_establish(phandle, 0, IPL_SERIAL, FDT_INTR_MPSAFE, comintr, sc); if (ssc->ssc_ih == NULL) { aprint_error_dev(self, "failed to establish interrupt on %s\n", intrstr); } aprint_normal_dev(self, "interrupting on %s\n", intrstr); } /* * Console support */ static int ti_com_console_match(int phandle) { return of_match_compatible(phandle, compatible); } static void ti_com_console_consinit(struct fdt_attach_args *faa, u_int uart_freq) { const int phandle = faa->faa_phandle; bus_space_tag_t bst = faa->faa_a4x_bst; bus_addr_t addr; tcflag_t flags; int speed; fdtbus_get_reg(phandle, 0, &addr, NULL); speed = fdtbus_get_stdout_speed(); if (speed < 0) speed = 115200; /* default */ flags = fdtbus_get_stdout_flags(); if (comcnattach(bst, addr, speed, uart_freq, COM_TYPE_NORMAL, flags)) panic("Cannot initialize ti com console"); } static const struct fdt_console ti_com_console = { .match = ti_com_console_match, .consinit = ti_com_console_consinit, }; FDT_CONSOLE(ti_com, &ti_com_console);