gttwsi.c revision 1.11.30.1
1 /* $NetBSD: gttwsi.c,v 1.11.30.1 2020/04/08 14:08:07 martin Exp $ */ 2 /* 3 * Copyright (c) 2008 Eiji Kawauchi. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed for the NetBSD Project by 17 * Eiji Kawauchi. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 /* 33 * Copyright (c) 2005 Brocade Communcations, inc. 34 * All rights reserved. 35 * 36 * Written by Matt Thomas for Brocade Communcations, Inc. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. The name of Brocade Communications, Inc. may not be used to endorse 47 * or promote products derived from this software without specific prior 48 * written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY BROCADE COMMUNICATIONS, INC. ``AS IS'' AND 51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 53 * ARE DISCLAIMED. IN NO EVENT SHALL EITHER BROCADE COMMUNICATIONS, INC. BE 54 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 55 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 56 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 57 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 58 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 59 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 60 * OF THE POSSIBILITY OF SUCH DAMAGE. 61 */ 62 //#define TWSI_DEBUG 63 64 /* 65 * Marvell Two-Wire Serial Interface (aka I2C) master driver 66 */ 67 68 #include <sys/cdefs.h> 69 __KERNEL_RCSID(0, "$NetBSD: gttwsi.c,v 1.11.30.1 2020/04/08 14:08:07 martin Exp $"); 70 #include "locators.h" 71 72 #include <sys/param.h> 73 #include <sys/bus.h> 74 #include <sys/condvar.h> 75 #include <sys/device.h> 76 #include <sys/errno.h> 77 #include <sys/kernel.h> 78 #include <sys/mutex.h> 79 #include <sys/systm.h> 80 81 #include <machine/cpu.h> 82 #include <machine/param.h> 83 84 #include <dev/i2c/i2cvar.h> 85 #include <dev/i2c/gttwsireg.h> 86 #include <dev/i2c/gttwsivar.h> 87 88 #include <dev/marvell/marvellvar.h> 89 90 static const bus_size_t marvell_twsi_regmap[GTTWSI_NREGS] = { 91 [TWSI_SLAVEADDR] = TWSI_MARVELL_SLAVEADDR, 92 [TWSI_EXTEND_SLAVEADDR] = TWSI_MARVELL_EXTEND_SLAVEADDR, 93 [TWSI_DATA] = TWSI_MARVELL_DATA, 94 [TWSI_CONTROL] = TWSI_MARVELL_CONTROL, 95 [TWSI_STATUS] = TWSI_MARVELL_STATUS, 96 [TWSI_BAUDRATE] = TWSI_MARVELL_BAUDRATE, 97 [TWSI_SOFTRESET] = TWSI_MARVELL_SOFTRESET, 98 }; 99 100 static int gttwsi_match(device_t, cfdata_t, void *); 101 static void gttwsi_attach(device_t, device_t, void *); 102 103 CFATTACH_DECL_NEW(gttwsi_gt, sizeof(struct gttwsi_softc), 104 gttwsi_match, gttwsi_attach, NULL, NULL); 105 CFATTACH_DECL_NEW(gttwsi_mbus, sizeof(struct gttwsi_softc), 106 gttwsi_match, gttwsi_attach, NULL, NULL); 107 108 /* ARGSUSED */ 109 static int 110 gttwsi_match(device_t parent, cfdata_t match, void *aux) 111 { 112 struct marvell_attach_args *mva = aux; 113 114 if (strcmp(mva->mva_name, match->cf_name) != 0) 115 return 0; 116 if (mva->mva_offset == MVA_OFFSET_DEFAULT || 117 mva->mva_irq == MVA_IRQ_DEFAULT) 118 return 0; 119 120 mva->mva_size = GTTWSI_SIZE; 121 return 1; 122 } 123 124 /* ARGSUSED */ 125 static void 126 gttwsi_attach(device_t parent, device_t self, void *args) 127 { 128 struct marvell_attach_args *mva = args; 129 bus_space_handle_t ioh; 130 131 if (bus_space_subregion(mva->mva_iot, mva->mva_ioh, mva->mva_offset, 132 mva->mva_size, &ioh)) { 133 aprint_error(": cannot map registers\n"); 134 return; 135 } 136 137 gttwsi_attach_subr(self, mva->mva_iot, ioh, marvell_twsi_regmap); 138 139 marvell_intr_establish(mva->mva_irq, IPL_BIO, gttwsi_intr, 140 device_private(self)); 141 142 gttwsi_config_children(self); 143 } 144
Indexes created Tue Oct 07 21:09:53 GMT 2025