ti_com.c revision 1.3.2.2
1 1.3.2.2 jdolecek /* $NetBSD: ti_com.c,v 1.3.2.2 2017/12/03 11:35:56 jdolecek Exp $ */ 2 1.3.2.2 jdolecek 3 1.3.2.2 jdolecek /*- 4 1.3.2.2 jdolecek * Copyright (c) 2017 Jared McNeill <jmcneill (at) invisible.ca> 5 1.3.2.2 jdolecek * All rights reserved. 6 1.3.2.2 jdolecek * 7 1.3.2.2 jdolecek * Redistribution and use in source and binary forms, with or without 8 1.3.2.2 jdolecek * modification, are permitted provided that the following conditions 9 1.3.2.2 jdolecek * are met: 10 1.3.2.2 jdolecek * 1. Redistributions of source code must retain the above copyright 11 1.3.2.2 jdolecek * notice, this list of conditions and the following disclaimer. 12 1.3.2.2 jdolecek * 2. Redistributions in binary form must reproduce the above copyright 13 1.3.2.2 jdolecek * notice, this list of conditions and the following disclaimer in the 14 1.3.2.2 jdolecek * documentation and/or other materials provided with the distribution. 15 1.3.2.2 jdolecek * 16 1.3.2.2 jdolecek * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 1.3.2.2 jdolecek * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 1.3.2.2 jdolecek * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 1.3.2.2 jdolecek * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 1.3.2.2 jdolecek * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 1.3.2.2 jdolecek * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 1.3.2.2 jdolecek * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 1.3.2.2 jdolecek * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 1.3.2.2 jdolecek * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 1.3.2.2 jdolecek * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 1.3.2.2 jdolecek * POSSIBILITY OF SUCH DAMAGE. 27 1.3.2.2 jdolecek */ 28 1.3.2.2 jdolecek 29 1.3.2.2 jdolecek #include <sys/cdefs.h> 30 1.3.2.2 jdolecek 31 1.3.2.2 jdolecek __KERNEL_RCSID(1, "$NetBSD: ti_com.c,v 1.3.2.2 2017/12/03 11:35:56 jdolecek Exp $"); 32 1.3.2.2 jdolecek 33 1.3.2.2 jdolecek #include <sys/param.h> 34 1.3.2.2 jdolecek #include <sys/bus.h> 35 1.3.2.2 jdolecek #include <sys/device.h> 36 1.3.2.2 jdolecek #include <sys/intr.h> 37 1.3.2.2 jdolecek #include <sys/systm.h> 38 1.3.2.2 jdolecek #include <sys/time.h> 39 1.3.2.2 jdolecek #include <sys/termios.h> 40 1.3.2.2 jdolecek 41 1.3.2.2 jdolecek #include <dev/ic/comvar.h> 42 1.3.2.2 jdolecek 43 1.3.2.2 jdolecek #include <dev/fdt/fdtvar.h> 44 1.3.2.2 jdolecek 45 1.3.2.2 jdolecek #include <arch/arm/ti/ti_prcm.h> 46 1.3.2.2 jdolecek 47 1.3.2.2 jdolecek static int ti_com_match(device_t, cfdata_t, void *); 48 1.3.2.2 jdolecek static void ti_com_attach(device_t, device_t, void *); 49 1.3.2.2 jdolecek 50 1.3.2.2 jdolecek static const char * const compatible[] = { 51 1.3.2.2 jdolecek "ti,am3352-uart", 52 1.3.2.2 jdolecek "ti,omap3-uart", 53 1.3.2.2 jdolecek NULL 54 1.3.2.2 jdolecek }; 55 1.3.2.2 jdolecek 56 1.3.2.2 jdolecek struct ti_com_softc { 57 1.3.2.2 jdolecek struct com_softc ssc_sc; 58 1.3.2.2 jdolecek void *ssc_ih; 59 1.3.2.2 jdolecek }; 60 1.3.2.2 jdolecek 61 1.3.2.2 jdolecek CFATTACH_DECL_NEW(ti_com, sizeof(struct ti_com_softc), 62 1.3.2.2 jdolecek ti_com_match, ti_com_attach, NULL, NULL); 63 1.3.2.2 jdolecek 64 1.3.2.2 jdolecek static int 65 1.3.2.2 jdolecek ti_com_match(device_t parent, cfdata_t cf, void *aux) 66 1.3.2.2 jdolecek { 67 1.3.2.2 jdolecek struct fdt_attach_args * const faa = aux; 68 1.3.2.2 jdolecek 69 1.3.2.2 jdolecek return of_match_compatible(faa->faa_phandle, compatible); 70 1.3.2.2 jdolecek } 71 1.3.2.2 jdolecek 72 1.3.2.2 jdolecek static void 73 1.3.2.2 jdolecek ti_com_attach(device_t parent, device_t self, void *aux) 74 1.3.2.2 jdolecek { 75 1.3.2.2 jdolecek struct ti_com_softc * const ssc = device_private(self); 76 1.3.2.2 jdolecek struct com_softc * const sc = &ssc->ssc_sc; 77 1.3.2.2 jdolecek struct fdt_attach_args * const faa = aux; 78 1.3.2.2 jdolecek const int phandle = faa->faa_phandle; 79 1.3.2.2 jdolecek bus_space_handle_t bsh; 80 1.3.2.2 jdolecek bus_space_tag_t bst; 81 1.3.2.2 jdolecek char intrstr[128]; 82 1.3.2.2 jdolecek struct clk *hwmod; 83 1.3.2.2 jdolecek bus_addr_t addr; 84 1.3.2.2 jdolecek bus_size_t size; 85 1.3.2.2 jdolecek int error; 86 1.3.2.2 jdolecek 87 1.3.2.2 jdolecek if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { 88 1.3.2.2 jdolecek aprint_error(": couldn't get registers\n"); 89 1.3.2.2 jdolecek return; 90 1.3.2.2 jdolecek } 91 1.3.2.2 jdolecek 92 1.3.2.2 jdolecek bst = faa->faa_a4x_bst; 93 1.3.2.2 jdolecek 94 1.3.2.2 jdolecek sc->sc_dev = self; 95 1.3.2.2 jdolecek 96 1.3.2.2 jdolecek if (of_getprop_uint32(phandle, "clock-frequency", &sc->sc_frequency) != 0) { 97 1.3.2.2 jdolecek aprint_error(": missing 'clock-frequency' property\n"); 98 1.3.2.2 jdolecek return; 99 1.3.2.2 jdolecek } 100 1.3.2.2 jdolecek 101 1.3.2.2 jdolecek sc->sc_type = COM_TYPE_NORMAL; 102 1.3.2.2 jdolecek 103 1.3.2.2 jdolecek error = bus_space_map(bst, addr, size, 0, &bsh); 104 1.3.2.2 jdolecek if (error) { 105 1.3.2.2 jdolecek aprint_error(": couldn't map %#llx: %d", (uint64_t)addr, error); 106 1.3.2.2 jdolecek return; 107 1.3.2.2 jdolecek } 108 1.3.2.2 jdolecek 109 1.3.2.2 jdolecek hwmod = ti_prcm_get_hwmod(phandle, 0); 110 1.3.2.2 jdolecek KASSERT(hwmod != NULL); 111 1.3.2.2 jdolecek if (clk_enable(hwmod) != 0) { 112 1.3.2.2 jdolecek aprint_error(": couldn't enable module\n"); 113 1.3.2.2 jdolecek return; 114 1.3.2.2 jdolecek } 115 1.3.2.2 jdolecek 116 1.3.2.2 jdolecek COM_INIT_REGS(sc->sc_regs, bst, bsh, addr); 117 1.3.2.2 jdolecek 118 1.3.2.2 jdolecek com_attach_subr(sc); 119 1.3.2.2 jdolecek aprint_naive("\n"); 120 1.3.2.2 jdolecek 121 1.3.2.2 jdolecek if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) { 122 1.3.2.2 jdolecek aprint_error_dev(self, "failed to decode interrupt\n"); 123 1.3.2.2 jdolecek return; 124 1.3.2.2 jdolecek } 125 1.3.2.2 jdolecek 126 1.3.2.2 jdolecek ssc->ssc_ih = fdtbus_intr_establish(phandle, 0, IPL_SERIAL, 127 1.3.2.2 jdolecek FDT_INTR_MPSAFE, comintr, sc); 128 1.3.2.2 jdolecek if (ssc->ssc_ih == NULL) { 129 1.3.2.2 jdolecek aprint_error_dev(self, "failed to establish interrupt on %s\n", 130 1.3.2.2 jdolecek intrstr); 131 1.3.2.2 jdolecek } 132 1.3.2.2 jdolecek aprint_normal_dev(self, "interrupting on %s\n", intrstr); 133 1.3.2.2 jdolecek } 134 1.3.2.2 jdolecek 135 1.3.2.2 jdolecek /* 136 1.3.2.2 jdolecek * Console support 137 1.3.2.2 jdolecek */ 138 1.3.2.2 jdolecek 139 1.3.2.2 jdolecek static int 140 1.3.2.2 jdolecek ti_com_console_match(int phandle) 141 1.3.2.2 jdolecek { 142 1.3.2.2 jdolecek return of_match_compatible(phandle, compatible); 143 1.3.2.2 jdolecek } 144 1.3.2.2 jdolecek 145 1.3.2.2 jdolecek static void 146 1.3.2.2 jdolecek ti_com_console_consinit(struct fdt_attach_args *faa, u_int uart_freq) 147 1.3.2.2 jdolecek { 148 1.3.2.2 jdolecek const int phandle = faa->faa_phandle; 149 1.3.2.2 jdolecek bus_space_tag_t bst = faa->faa_a4x_bst; 150 1.3.2.2 jdolecek bus_addr_t addr; 151 1.3.2.2 jdolecek tcflag_t flags; 152 1.3.2.2 jdolecek int speed; 153 1.3.2.2 jdolecek 154 1.3.2.2 jdolecek fdtbus_get_reg(phandle, 0, &addr, NULL); 155 1.3.2.2 jdolecek speed = fdtbus_get_stdout_speed(); 156 1.3.2.2 jdolecek if (speed < 0) 157 1.3.2.2 jdolecek speed = 115200; /* default */ 158 1.3.2.2 jdolecek flags = fdtbus_get_stdout_flags(); 159 1.3.2.2 jdolecek 160 1.3.2.2 jdolecek if (comcnattach(bst, addr, speed, uart_freq, COM_TYPE_NORMAL, flags)) 161 1.3.2.2 jdolecek panic("Cannot initialize ti com console"); 162 1.3.2.2 jdolecek } 163 1.3.2.2 jdolecek 164 1.3.2.2 jdolecek static const struct fdt_console ti_com_console = { 165 1.3.2.2 jdolecek .match = ti_com_console_match, 166 1.3.2.2 jdolecek .consinit = ti_com_console_consinit, 167 1.3.2.2 jdolecek }; 168 1.3.2.2 jdolecek 169 1.3.2.2 jdolecek FDT_CONSOLE(ti_com, &ti_com_console); 170
Indexes created Thu Oct 30 03:10:01 GMT 2025