1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright (c) 2000-2001 by Sun Microsystems, Inc. 24*0Sstevel@tonic-gate * All rights reserved. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate #include <sys/stat.h> /* ddi_create_minor_node S_IFCHR */ 31*0Sstevel@tonic-gate #include <sys/modctl.h> /* for modldrv */ 32*0Sstevel@tonic-gate #include <sys/open.h> /* for open params. */ 33*0Sstevel@tonic-gate #include <sys/types.h> 34*0Sstevel@tonic-gate #include <sys/kmem.h> 35*0Sstevel@tonic-gate #include <sys/sunddi.h> 36*0Sstevel@tonic-gate #include <sys/conf.h> /* req. by dev_ops flags MTSAFE etc. */ 37*0Sstevel@tonic-gate #include <sys/ddi.h> 38*0Sstevel@tonic-gate #include <sys/file.h> 39*0Sstevel@tonic-gate #include <sys/note.h> 40*0Sstevel@tonic-gate 41*0Sstevel@tonic-gate #include <sys/i2c/clients/pcf8574_impl.h> 42*0Sstevel@tonic-gate 43*0Sstevel@tonic-gate static void *pcf8574soft_statep; 44*0Sstevel@tonic-gate 45*0Sstevel@tonic-gate static int pcf8574_do_attach(dev_info_t *); 46*0Sstevel@tonic-gate static int pcf8574_do_detach(dev_info_t *); 47*0Sstevel@tonic-gate static int pcf8574_do_resume(void); 48*0Sstevel@tonic-gate static int pcf8574_do_suspend(void); 49*0Sstevel@tonic-gate static int pcf8574_get(struct pcf8574_unit *, uchar_t *); 50*0Sstevel@tonic-gate static int pcf8574_set(struct pcf8574_unit *, uchar_t); 51*0Sstevel@tonic-gate 52*0Sstevel@tonic-gate /* 53*0Sstevel@tonic-gate * cb ops (only need ioctl) 54*0Sstevel@tonic-gate */ 55*0Sstevel@tonic-gate static int pcf8574_open(dev_t *, int, int, cred_t *); 56*0Sstevel@tonic-gate static int pcf8574_close(dev_t, int, int, cred_t *); 57*0Sstevel@tonic-gate static int pcf8574_ioctl(dev_t, int, intptr_t, int, cred_t *, int *); 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate static struct cb_ops pcf8574_cbops = { 60*0Sstevel@tonic-gate pcf8574_open, /* open */ 61*0Sstevel@tonic-gate pcf8574_close, /* close */ 62*0Sstevel@tonic-gate nodev, /* strategy */ 63*0Sstevel@tonic-gate nodev, /* print */ 64*0Sstevel@tonic-gate nodev, /* dump */ 65*0Sstevel@tonic-gate nodev, /* read */ 66*0Sstevel@tonic-gate nodev, /* write */ 67*0Sstevel@tonic-gate pcf8574_ioctl, /* ioctl */ 68*0Sstevel@tonic-gate nodev, /* devmap */ 69*0Sstevel@tonic-gate nodev, /* mmap */ 70*0Sstevel@tonic-gate nodev, /* segmap */ 71*0Sstevel@tonic-gate nochpoll, /* poll */ 72*0Sstevel@tonic-gate ddi_prop_op, /* cb_prop_op */ 73*0Sstevel@tonic-gate NULL, /* streamtab */ 74*0Sstevel@tonic-gate D_NEW | D_MP | D_HOTPLUG, /* Driver compatibility flag */ 75*0Sstevel@tonic-gate CB_REV, /* rev */ 76*0Sstevel@tonic-gate nodev, /* int (*cb_aread)() */ 77*0Sstevel@tonic-gate nodev /* int (*cb_awrite)() */ 78*0Sstevel@tonic-gate }; 79*0Sstevel@tonic-gate 80*0Sstevel@tonic-gate /* 81*0Sstevel@tonic-gate * dev ops 82*0Sstevel@tonic-gate */ 83*0Sstevel@tonic-gate static int pcf8574_attach(dev_info_t *dip, ddi_attach_cmd_t cmd); 84*0Sstevel@tonic-gate static int pcf8574_detach(dev_info_t *dip, ddi_detach_cmd_t cmd); 85*0Sstevel@tonic-gate 86*0Sstevel@tonic-gate static struct dev_ops pcf8574_ops = { 87*0Sstevel@tonic-gate DEVO_REV, 88*0Sstevel@tonic-gate 0, 89*0Sstevel@tonic-gate ddi_getinfo_1to1, 90*0Sstevel@tonic-gate nulldev, 91*0Sstevel@tonic-gate nulldev, 92*0Sstevel@tonic-gate pcf8574_attach, 93*0Sstevel@tonic-gate pcf8574_detach, 94*0Sstevel@tonic-gate nodev, 95*0Sstevel@tonic-gate &pcf8574_cbops, 96*0Sstevel@tonic-gate NULL 97*0Sstevel@tonic-gate }; 98*0Sstevel@tonic-gate 99*0Sstevel@tonic-gate extern struct mod_ops mod_driverops; 100*0Sstevel@tonic-gate 101*0Sstevel@tonic-gate static struct modldrv pcf8574_modldrv = { 102*0Sstevel@tonic-gate &mod_driverops, /* type of module - driver */ 103*0Sstevel@tonic-gate "PCF8574 i2c device driver: v%I%", 104*0Sstevel@tonic-gate &pcf8574_ops 105*0Sstevel@tonic-gate }; 106*0Sstevel@tonic-gate 107*0Sstevel@tonic-gate static struct modlinkage pcf8574_modlinkage = { 108*0Sstevel@tonic-gate MODREV_1, 109*0Sstevel@tonic-gate &pcf8574_modldrv, 110*0Sstevel@tonic-gate 0 111*0Sstevel@tonic-gate }; 112*0Sstevel@tonic-gate 113*0Sstevel@tonic-gate 114*0Sstevel@tonic-gate int 115*0Sstevel@tonic-gate _init(void) 116*0Sstevel@tonic-gate { 117*0Sstevel@tonic-gate int error; 118*0Sstevel@tonic-gate 119*0Sstevel@tonic-gate error = mod_install(&pcf8574_modlinkage); 120*0Sstevel@tonic-gate 121*0Sstevel@tonic-gate if (!error) 122*0Sstevel@tonic-gate (void) ddi_soft_state_init(&pcf8574soft_statep, 123*0Sstevel@tonic-gate sizeof (struct pcf8574_unit), 1); 124*0Sstevel@tonic-gate return (error); 125*0Sstevel@tonic-gate } 126*0Sstevel@tonic-gate 127*0Sstevel@tonic-gate int 128*0Sstevel@tonic-gate _fini(void) 129*0Sstevel@tonic-gate { 130*0Sstevel@tonic-gate int error; 131*0Sstevel@tonic-gate 132*0Sstevel@tonic-gate error = mod_remove(&pcf8574_modlinkage); 133*0Sstevel@tonic-gate if (!error) 134*0Sstevel@tonic-gate ddi_soft_state_fini(&pcf8574soft_statep); 135*0Sstevel@tonic-gate 136*0Sstevel@tonic-gate return (error); 137*0Sstevel@tonic-gate } 138*0Sstevel@tonic-gate 139*0Sstevel@tonic-gate int 140*0Sstevel@tonic-gate _info(struct modinfo *modinfop) 141*0Sstevel@tonic-gate { 142*0Sstevel@tonic-gate return (mod_info(&pcf8574_modlinkage, modinfop)); 143*0Sstevel@tonic-gate } 144*0Sstevel@tonic-gate 145*0Sstevel@tonic-gate static int 146*0Sstevel@tonic-gate pcf8574_open(dev_t *devp, int flags, int otyp, cred_t *credp) 147*0Sstevel@tonic-gate { 148*0Sstevel@tonic-gate _NOTE(ARGUNUSED(credp)) 149*0Sstevel@tonic-gate 150*0Sstevel@tonic-gate struct pcf8574_unit *unitp; 151*0Sstevel@tonic-gate int instance; 152*0Sstevel@tonic-gate int error = 0; 153*0Sstevel@tonic-gate 154*0Sstevel@tonic-gate D1CMN_ERR((CE_WARN, "Opening the PCF8574 device\n")); 155*0Sstevel@tonic-gate 156*0Sstevel@tonic-gate instance = getminor(*devp); 157*0Sstevel@tonic-gate 158*0Sstevel@tonic-gate if (instance < 0) { 159*0Sstevel@tonic-gate return (ENXIO); 160*0Sstevel@tonic-gate } 161*0Sstevel@tonic-gate 162*0Sstevel@tonic-gate unitp = (struct pcf8574_unit *) 163*0Sstevel@tonic-gate ddi_get_soft_state(pcf8574soft_statep, instance); 164*0Sstevel@tonic-gate 165*0Sstevel@tonic-gate if (unitp == NULL) { 166*0Sstevel@tonic-gate return (ENXIO); 167*0Sstevel@tonic-gate } 168*0Sstevel@tonic-gate 169*0Sstevel@tonic-gate if (otyp != OTYP_CHR) { 170*0Sstevel@tonic-gate return (EINVAL); 171*0Sstevel@tonic-gate } 172*0Sstevel@tonic-gate 173*0Sstevel@tonic-gate mutex_enter(&unitp->pcf8574_mutex); 174*0Sstevel@tonic-gate 175*0Sstevel@tonic-gate if (flags & FEXCL) { 176*0Sstevel@tonic-gate if (unitp->pcf8574_oflag != 0) { 177*0Sstevel@tonic-gate error = EBUSY; 178*0Sstevel@tonic-gate } else { 179*0Sstevel@tonic-gate unitp->pcf8574_oflag = FEXCL; 180*0Sstevel@tonic-gate } 181*0Sstevel@tonic-gate } else { 182*0Sstevel@tonic-gate if (unitp->pcf8574_oflag == FEXCL) { 183*0Sstevel@tonic-gate error = EBUSY; 184*0Sstevel@tonic-gate } else { 185*0Sstevel@tonic-gate unitp->pcf8574_oflag = FOPEN; 186*0Sstevel@tonic-gate } 187*0Sstevel@tonic-gate } 188*0Sstevel@tonic-gate 189*0Sstevel@tonic-gate mutex_exit(&unitp->pcf8574_mutex); 190*0Sstevel@tonic-gate 191*0Sstevel@tonic-gate return (error); 192*0Sstevel@tonic-gate } 193*0Sstevel@tonic-gate 194*0Sstevel@tonic-gate static int 195*0Sstevel@tonic-gate pcf8574_close(dev_t dev, int flags, int otyp, cred_t *credp) 196*0Sstevel@tonic-gate { 197*0Sstevel@tonic-gate _NOTE(ARGUNUSED(flags, otyp, credp)) 198*0Sstevel@tonic-gate 199*0Sstevel@tonic-gate struct pcf8574_unit *unitp; 200*0Sstevel@tonic-gate int instance; 201*0Sstevel@tonic-gate 202*0Sstevel@tonic-gate instance = getminor(dev); 203*0Sstevel@tonic-gate 204*0Sstevel@tonic-gate if (instance < 0) { 205*0Sstevel@tonic-gate return (ENXIO); 206*0Sstevel@tonic-gate } 207*0Sstevel@tonic-gate unitp = (struct pcf8574_unit *) 208*0Sstevel@tonic-gate ddi_get_soft_state(pcf8574soft_statep, instance); 209*0Sstevel@tonic-gate 210*0Sstevel@tonic-gate if (unitp == NULL) { 211*0Sstevel@tonic-gate return (ENXIO); 212*0Sstevel@tonic-gate } 213*0Sstevel@tonic-gate 214*0Sstevel@tonic-gate mutex_enter(&unitp->pcf8574_mutex); 215*0Sstevel@tonic-gate 216*0Sstevel@tonic-gate unitp->pcf8574_oflag = 0; 217*0Sstevel@tonic-gate 218*0Sstevel@tonic-gate mutex_exit(&unitp->pcf8574_mutex); 219*0Sstevel@tonic-gate return (DDI_SUCCESS); 220*0Sstevel@tonic-gate } 221*0Sstevel@tonic-gate 222*0Sstevel@tonic-gate static int 223*0Sstevel@tonic-gate pcf8574_get(struct pcf8574_unit *unitp, uchar_t *byte) { 224*0Sstevel@tonic-gate i2c_transfer_t *i2c_tran_pointer; 225*0Sstevel@tonic-gate int err = I2C_SUCCESS; 226*0Sstevel@tonic-gate 227*0Sstevel@tonic-gate D1CMN_ERR((CE_WARN, "Entered the pcf8574_get routine\n")); 228*0Sstevel@tonic-gate 229*0Sstevel@tonic-gate (void) i2c_transfer_alloc(unitp->pcf8574_hdl, &i2c_tran_pointer, 230*0Sstevel@tonic-gate 0, 1, I2C_SLEEP); 231*0Sstevel@tonic-gate if (i2c_tran_pointer == NULL) { 232*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "%s: Failed in pcf8574_get " 233*0Sstevel@tonic-gate "i2c_tran_pointer not allocated\n", 234*0Sstevel@tonic-gate unitp->pcf8574_name)); 235*0Sstevel@tonic-gate return (ENOMEM); 236*0Sstevel@tonic-gate } 237*0Sstevel@tonic-gate 238*0Sstevel@tonic-gate i2c_tran_pointer->i2c_flags = I2C_RD; 239*0Sstevel@tonic-gate err = i2c_transfer(unitp->pcf8574_hdl, i2c_tran_pointer); 240*0Sstevel@tonic-gate if (err) { 241*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "%s: Failed in the i2c_transfer routine\n", 242*0Sstevel@tonic-gate unitp->pcf8574_name)); 243*0Sstevel@tonic-gate i2c_transfer_free(unitp->pcf8574_hdl, i2c_tran_pointer); 244*0Sstevel@tonic-gate return (err); 245*0Sstevel@tonic-gate } 246*0Sstevel@tonic-gate 247*0Sstevel@tonic-gate D1CMN_ERR((CE_WARN, "Back from a transfer value is %x\n", 248*0Sstevel@tonic-gate i2c_tran_pointer->i2c_rbuf[0])); 249*0Sstevel@tonic-gate *byte = i2c_tran_pointer->i2c_rbuf[0]; 250*0Sstevel@tonic-gate 251*0Sstevel@tonic-gate i2c_transfer_free(unitp->pcf8574_hdl, i2c_tran_pointer); 252*0Sstevel@tonic-gate return (err); 253*0Sstevel@tonic-gate } 254*0Sstevel@tonic-gate 255*0Sstevel@tonic-gate static int 256*0Sstevel@tonic-gate pcf8574_set(struct pcf8574_unit *unitp, uchar_t byte) { 257*0Sstevel@tonic-gate i2c_transfer_t *i2c_tran_pointer; 258*0Sstevel@tonic-gate int err = I2C_SUCCESS; 259*0Sstevel@tonic-gate 260*0Sstevel@tonic-gate (void) i2c_transfer_alloc(unitp->pcf8574_hdl, &i2c_tran_pointer, 261*0Sstevel@tonic-gate 1, 0, I2C_SLEEP); 262*0Sstevel@tonic-gate if (i2c_tran_pointer == NULL) { 263*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "%s: Failed in pcf8574_set " 264*0Sstevel@tonic-gate "i2c_tran_pointer not allocated\n", 265*0Sstevel@tonic-gate unitp->pcf8574_name)); 266*0Sstevel@tonic-gate return (ENOMEM); 267*0Sstevel@tonic-gate } 268*0Sstevel@tonic-gate 269*0Sstevel@tonic-gate i2c_tran_pointer->i2c_flags = I2C_WR; 270*0Sstevel@tonic-gate i2c_tran_pointer->i2c_wbuf[0] = byte; 271*0Sstevel@tonic-gate D1CMN_ERR((CE_NOTE, "%s: contains %x\n", unitp->pcf8574_name, 272*0Sstevel@tonic-gate i2c_tran_pointer->i2c_wbuf[0])); 273*0Sstevel@tonic-gate 274*0Sstevel@tonic-gate err = i2c_transfer(unitp->pcf8574_hdl, i2c_tran_pointer); 275*0Sstevel@tonic-gate if (err) { 276*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "%s: Failed in the pcf8574_set" 277*0Sstevel@tonic-gate " i2c_transfer routine\n", 278*0Sstevel@tonic-gate unitp->pcf8574_name)); 279*0Sstevel@tonic-gate i2c_transfer_free(unitp->pcf8574_hdl, i2c_tran_pointer); 280*0Sstevel@tonic-gate return (err); 281*0Sstevel@tonic-gate } 282*0Sstevel@tonic-gate i2c_transfer_free(unitp->pcf8574_hdl, i2c_tran_pointer); 283*0Sstevel@tonic-gate return (err); 284*0Sstevel@tonic-gate } 285*0Sstevel@tonic-gate 286*0Sstevel@tonic-gate static int 287*0Sstevel@tonic-gate pcf8574_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, 288*0Sstevel@tonic-gate cred_t *credp, int *rvalp) 289*0Sstevel@tonic-gate { 290*0Sstevel@tonic-gate _NOTE(ARGUNUSED(credp, rvalp)) 291*0Sstevel@tonic-gate 292*0Sstevel@tonic-gate struct pcf8574_unit *unitp; 293*0Sstevel@tonic-gate int instance; 294*0Sstevel@tonic-gate int err = 0; 295*0Sstevel@tonic-gate i2c_bit_t ioctl_bit; 296*0Sstevel@tonic-gate i2c_port_t ioctl_port; 297*0Sstevel@tonic-gate uchar_t byte; 298*0Sstevel@tonic-gate 299*0Sstevel@tonic-gate if (arg == NULL) { 300*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "PCF8574: ioctl: arg passed in to ioctl " 301*0Sstevel@tonic-gate "= NULL\n")); 302*0Sstevel@tonic-gate err = EINVAL; 303*0Sstevel@tonic-gate return (err); 304*0Sstevel@tonic-gate } 305*0Sstevel@tonic-gate 306*0Sstevel@tonic-gate instance = getminor(dev); 307*0Sstevel@tonic-gate unitp = (struct pcf8574_unit *) 308*0Sstevel@tonic-gate ddi_get_soft_state(pcf8574soft_statep, instance); 309*0Sstevel@tonic-gate if (unitp == NULL) { 310*0Sstevel@tonic-gate cmn_err(CE_WARN, "PCF8574: ioctl: unitp not filled\n"); 311*0Sstevel@tonic-gate return (ENOMEM); 312*0Sstevel@tonic-gate } 313*0Sstevel@tonic-gate 314*0Sstevel@tonic-gate mutex_enter(&unitp->pcf8574_mutex); 315*0Sstevel@tonic-gate 316*0Sstevel@tonic-gate switch (cmd) { 317*0Sstevel@tonic-gate case I2C_GET_PORT: 318*0Sstevel@tonic-gate if (ddi_copyin((caddr_t)arg, (caddr_t)&ioctl_port, 319*0Sstevel@tonic-gate sizeof (i2c_port_t), mode) != DDI_SUCCESS) { 320*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "%s: Failed in the I2C_GET_PORT" 321*0Sstevel@tonic-gate " ddi_copyin routine\n", 322*0Sstevel@tonic-gate unitp->pcf8574_name)); 323*0Sstevel@tonic-gate err = EFAULT; 324*0Sstevel@tonic-gate break; 325*0Sstevel@tonic-gate } 326*0Sstevel@tonic-gate 327*0Sstevel@tonic-gate err = pcf8574_get(unitp, &byte); 328*0Sstevel@tonic-gate if (err != I2C_SUCCESS) { 329*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "%s: Failed in the I2C_GET_PORT" 330*0Sstevel@tonic-gate " pcf8574_get routine\n", 331*0Sstevel@tonic-gate unitp->pcf8574_name)); 332*0Sstevel@tonic-gate break; 333*0Sstevel@tonic-gate } 334*0Sstevel@tonic-gate 335*0Sstevel@tonic-gate ioctl_port.value = byte; 336*0Sstevel@tonic-gate if (ddi_copyout((caddr_t)&ioctl_port, (caddr_t)arg, 337*0Sstevel@tonic-gate sizeof (i2c_port_t), mode) != DDI_SUCCESS) { 338*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "%s: Failed in I2C_GET_PORT " 339*0Sstevel@tonic-gate "ddi_copyout routine\n", 340*0Sstevel@tonic-gate unitp->pcf8574_name)); 341*0Sstevel@tonic-gate err = EFAULT; 342*0Sstevel@tonic-gate } 343*0Sstevel@tonic-gate 344*0Sstevel@tonic-gate D1CMN_ERR((CE_NOTE, "%s: contains %x\n", unitp->pcf8574_name, 345*0Sstevel@tonic-gate byte)); 346*0Sstevel@tonic-gate break; 347*0Sstevel@tonic-gate 348*0Sstevel@tonic-gate case I2C_SET_PORT: 349*0Sstevel@tonic-gate if (ddi_copyin((caddr_t)arg, (caddr_t)&ioctl_port, 350*0Sstevel@tonic-gate sizeof (uint8_t), mode) != DDI_SUCCESS) { 351*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "%s: Failed in the I2C_SET_PORT" 352*0Sstevel@tonic-gate "ddi_cpoyin routine\n", 353*0Sstevel@tonic-gate unitp->pcf8574_name)); 354*0Sstevel@tonic-gate err = EFAULT; 355*0Sstevel@tonic-gate break; 356*0Sstevel@tonic-gate } 357*0Sstevel@tonic-gate 358*0Sstevel@tonic-gate err = pcf8574_set(unitp, ioctl_port.value); 359*0Sstevel@tonic-gate if (err != I2C_SUCCESS) { 360*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "%s: Failed in the I2C_SET_PORT" 361*0Sstevel@tonic-gate " pcf8574_set routine\n", 362*0Sstevel@tonic-gate unitp->pcf8574_name)); 363*0Sstevel@tonic-gate break; 364*0Sstevel@tonic-gate } 365*0Sstevel@tonic-gate break; 366*0Sstevel@tonic-gate 367*0Sstevel@tonic-gate case I2C_GET_BIT: 368*0Sstevel@tonic-gate if (ddi_copyin((caddr_t)arg, (caddr_t)&ioctl_bit, 369*0Sstevel@tonic-gate sizeof (i2c_bit_t), mode) != DDI_SUCCESS) { 370*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "%s: Failed in the I2C_GET_BIT" 371*0Sstevel@tonic-gate " ddi_copyin routine\n", 372*0Sstevel@tonic-gate unitp->pcf8574_name)); 373*0Sstevel@tonic-gate err = EFAULT; 374*0Sstevel@tonic-gate break; 375*0Sstevel@tonic-gate } 376*0Sstevel@tonic-gate 377*0Sstevel@tonic-gate if ((ioctl_bit.bit_num < 0) && (ioctl_bit.bit_num > 7)) { 378*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "%s: In I2C_GET_BIT bit num" 379*0Sstevel@tonic-gate " was not between 0 and 7\n", 380*0Sstevel@tonic-gate unitp->pcf8574_name)); 381*0Sstevel@tonic-gate err = EIO; 382*0Sstevel@tonic-gate break; 383*0Sstevel@tonic-gate } 384*0Sstevel@tonic-gate 385*0Sstevel@tonic-gate err = pcf8574_get(unitp, &byte); 386*0Sstevel@tonic-gate if (err != I2C_SUCCESS) { 387*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "%s: Failed in the I2C_GET_BIT" 388*0Sstevel@tonic-gate " pcf8574_get routine\n", 389*0Sstevel@tonic-gate unitp->pcf8574_name)); 390*0Sstevel@tonic-gate break; 391*0Sstevel@tonic-gate } 392*0Sstevel@tonic-gate 393*0Sstevel@tonic-gate D1CMN_ERR((CE_NOTE, "%s: byte returned from device is %x\n", 394*0Sstevel@tonic-gate unitp->pcf8574_name, byte)); 395*0Sstevel@tonic-gate ioctl_bit.bit_value = (boolean_t)PCF8574_BIT_READ_MASK(byte, 396*0Sstevel@tonic-gate ioctl_bit.bit_num); 397*0Sstevel@tonic-gate D1CMN_ERR((CE_NOTE, "%s: byte now contains %x\n", 398*0Sstevel@tonic-gate unitp->pcf8574_name, byte)); 399*0Sstevel@tonic-gate 400*0Sstevel@tonic-gate if (ddi_copyout((caddr_t)&ioctl_bit, (caddr_t)arg, 401*0Sstevel@tonic-gate sizeof (i2c_bit_t), mode) != DDI_SUCCESS) { 402*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "%s: Failed in I2C_GET_BIT" 403*0Sstevel@tonic-gate " ddi_copyout routine\n", 404*0Sstevel@tonic-gate unitp->pcf8574_name)); 405*0Sstevel@tonic-gate err = EFAULT; 406*0Sstevel@tonic-gate } 407*0Sstevel@tonic-gate break; 408*0Sstevel@tonic-gate 409*0Sstevel@tonic-gate case I2C_SET_BIT: 410*0Sstevel@tonic-gate if (ddi_copyin((caddr_t)arg, (caddr_t)&ioctl_bit, 411*0Sstevel@tonic-gate sizeof (i2c_bit_t), mode) != DDI_SUCCESS) { 412*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "%s: Failed in I2C_SET_BIT" 413*0Sstevel@tonic-gate " ddi_copyin routine\n", 414*0Sstevel@tonic-gate unitp->pcf8574_name)); 415*0Sstevel@tonic-gate err = EFAULT; 416*0Sstevel@tonic-gate break; 417*0Sstevel@tonic-gate } 418*0Sstevel@tonic-gate 419*0Sstevel@tonic-gate if ((ioctl_bit.bit_num < 0) && (ioctl_bit.bit_num > 7)) { 420*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "%s: I2C_SET_BIT: bit_num sent" 421*0Sstevel@tonic-gate " in was not between 0 and 7", 422*0Sstevel@tonic-gate unitp->pcf8574_name)); 423*0Sstevel@tonic-gate err = EIO; 424*0Sstevel@tonic-gate break; 425*0Sstevel@tonic-gate } 426*0Sstevel@tonic-gate 427*0Sstevel@tonic-gate err = pcf8574_get(unitp, &byte); 428*0Sstevel@tonic-gate if (err != I2C_SUCCESS) { 429*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "%s: Failed in the I2C_SET_BIT" 430*0Sstevel@tonic-gate " pcf8574_get routine\n", 431*0Sstevel@tonic-gate unitp->pcf8574_name)); 432*0Sstevel@tonic-gate break; 433*0Sstevel@tonic-gate } 434*0Sstevel@tonic-gate 435*0Sstevel@tonic-gate D1CMN_ERR((CE_NOTE, "%s: byte returned from device is %x\n", 436*0Sstevel@tonic-gate unitp->pcf8574_name, byte)); 437*0Sstevel@tonic-gate byte = PCF8574_BIT_WRITE_MASK(byte, ioctl_bit.bit_num, 438*0Sstevel@tonic-gate ioctl_bit.bit_value); 439*0Sstevel@tonic-gate D1CMN_ERR((CE_NOTE, "%s: byte after shifting is %x\n", 440*0Sstevel@tonic-gate unitp->pcf8574_name, byte)); 441*0Sstevel@tonic-gate 442*0Sstevel@tonic-gate err = pcf8574_set(unitp, byte); 443*0Sstevel@tonic-gate if (err != I2C_SUCCESS) { 444*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "%s: Failed in the I2C_SET_BIT" 445*0Sstevel@tonic-gate " pcf8574_set routine\n", 446*0Sstevel@tonic-gate unitp->pcf8574_name)); 447*0Sstevel@tonic-gate break; 448*0Sstevel@tonic-gate } 449*0Sstevel@tonic-gate break; 450*0Sstevel@tonic-gate 451*0Sstevel@tonic-gate default: 452*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "%s: Invalid IOCTL cmd: %x\n", 453*0Sstevel@tonic-gate unitp->pcf8574_name, cmd)); 454*0Sstevel@tonic-gate err = EINVAL; 455*0Sstevel@tonic-gate } 456*0Sstevel@tonic-gate 457*0Sstevel@tonic-gate mutex_exit(&unitp->pcf8574_mutex); 458*0Sstevel@tonic-gate return (err); 459*0Sstevel@tonic-gate } 460*0Sstevel@tonic-gate 461*0Sstevel@tonic-gate static int 462*0Sstevel@tonic-gate pcf8574_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 463*0Sstevel@tonic-gate { 464*0Sstevel@tonic-gate switch (cmd) { 465*0Sstevel@tonic-gate case DDI_ATTACH: 466*0Sstevel@tonic-gate return (pcf8574_do_attach(dip)); 467*0Sstevel@tonic-gate case DDI_RESUME: 468*0Sstevel@tonic-gate return (pcf8574_do_resume()); 469*0Sstevel@tonic-gate default: 470*0Sstevel@tonic-gate return (DDI_FAILURE); 471*0Sstevel@tonic-gate } 472*0Sstevel@tonic-gate } 473*0Sstevel@tonic-gate 474*0Sstevel@tonic-gate static int 475*0Sstevel@tonic-gate pcf8574_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 476*0Sstevel@tonic-gate { 477*0Sstevel@tonic-gate switch (cmd) { 478*0Sstevel@tonic-gate case DDI_DETACH: 479*0Sstevel@tonic-gate return (pcf8574_do_detach(dip)); 480*0Sstevel@tonic-gate case DDI_SUSPEND: 481*0Sstevel@tonic-gate return (pcf8574_do_suspend()); 482*0Sstevel@tonic-gate default: 483*0Sstevel@tonic-gate return (DDI_FAILURE); 484*0Sstevel@tonic-gate } 485*0Sstevel@tonic-gate } 486*0Sstevel@tonic-gate 487*0Sstevel@tonic-gate static int 488*0Sstevel@tonic-gate pcf8574_do_attach(dev_info_t *dip) 489*0Sstevel@tonic-gate { 490*0Sstevel@tonic-gate struct pcf8574_unit *unitp; 491*0Sstevel@tonic-gate int instance; 492*0Sstevel@tonic-gate 493*0Sstevel@tonic-gate instance = ddi_get_instance(dip); 494*0Sstevel@tonic-gate 495*0Sstevel@tonic-gate if (ddi_soft_state_zalloc(pcf8574soft_statep, instance) != 0) { 496*0Sstevel@tonic-gate cmn_err(CE_WARN, "%s%d: failed to zalloc softstate\n", 497*0Sstevel@tonic-gate ddi_get_name(dip), instance); 498*0Sstevel@tonic-gate return (DDI_FAILURE); 499*0Sstevel@tonic-gate } 500*0Sstevel@tonic-gate 501*0Sstevel@tonic-gate unitp = ddi_get_soft_state(pcf8574soft_statep, instance); 502*0Sstevel@tonic-gate 503*0Sstevel@tonic-gate if (unitp == NULL) { 504*0Sstevel@tonic-gate cmn_err(CE_WARN, "%s%d: unitp not filled\n", 505*0Sstevel@tonic-gate ddi_get_name(dip), instance); 506*0Sstevel@tonic-gate return (ENOMEM); 507*0Sstevel@tonic-gate } 508*0Sstevel@tonic-gate 509*0Sstevel@tonic-gate (void) snprintf(unitp->pcf8574_name, sizeof (unitp->pcf8574_name), 510*0Sstevel@tonic-gate "%sd", ddi_node_name(dip), instance); 511*0Sstevel@tonic-gate 512*0Sstevel@tonic-gate 513*0Sstevel@tonic-gate if (ddi_create_minor_node(dip, "pcf8574", S_IFCHR, instance, 514*0Sstevel@tonic-gate "ddi_i2c:ioexp", NULL) == DDI_FAILURE) { 515*0Sstevel@tonic-gate cmn_err(CE_WARN, "%s ddi_create_minor_node failed for " 516*0Sstevel@tonic-gate "%s\n", unitp->pcf8574_name, "pcf8574"); 517*0Sstevel@tonic-gate ddi_soft_state_free(pcf8574soft_statep, instance); 518*0Sstevel@tonic-gate 519*0Sstevel@tonic-gate return (DDI_FAILURE); 520*0Sstevel@tonic-gate } 521*0Sstevel@tonic-gate 522*0Sstevel@tonic-gate if (i2c_client_register(dip, &unitp->pcf8574_hdl) != I2C_SUCCESS) { 523*0Sstevel@tonic-gate ddi_remove_minor_node(dip, NULL); 524*0Sstevel@tonic-gate ddi_soft_state_free(pcf8574soft_statep, instance); 525*0Sstevel@tonic-gate 526*0Sstevel@tonic-gate return (DDI_FAILURE); 527*0Sstevel@tonic-gate } 528*0Sstevel@tonic-gate 529*0Sstevel@tonic-gate mutex_init(&unitp->pcf8574_mutex, NULL, MUTEX_DRIVER, NULL); 530*0Sstevel@tonic-gate 531*0Sstevel@tonic-gate return (DDI_SUCCESS); 532*0Sstevel@tonic-gate } 533*0Sstevel@tonic-gate 534*0Sstevel@tonic-gate static int 535*0Sstevel@tonic-gate pcf8574_do_resume() 536*0Sstevel@tonic-gate { 537*0Sstevel@tonic-gate int ret = DDI_SUCCESS; 538*0Sstevel@tonic-gate 539*0Sstevel@tonic-gate return (ret); 540*0Sstevel@tonic-gate } 541*0Sstevel@tonic-gate 542*0Sstevel@tonic-gate static int 543*0Sstevel@tonic-gate pcf8574_do_suspend() 544*0Sstevel@tonic-gate { 545*0Sstevel@tonic-gate int ret = DDI_SUCCESS; 546*0Sstevel@tonic-gate 547*0Sstevel@tonic-gate return (ret); 548*0Sstevel@tonic-gate } 549*0Sstevel@tonic-gate 550*0Sstevel@tonic-gate static int 551*0Sstevel@tonic-gate pcf8574_do_detach(dev_info_t *dip) 552*0Sstevel@tonic-gate { 553*0Sstevel@tonic-gate struct pcf8574_unit *unitp; 554*0Sstevel@tonic-gate int instance; 555*0Sstevel@tonic-gate 556*0Sstevel@tonic-gate instance = ddi_get_instance(dip); 557*0Sstevel@tonic-gate 558*0Sstevel@tonic-gate unitp = ddi_get_soft_state(pcf8574soft_statep, instance); 559*0Sstevel@tonic-gate 560*0Sstevel@tonic-gate if (unitp == NULL) { 561*0Sstevel@tonic-gate cmn_err(CE_WARN, "%s%d: unitp not filled\n", 562*0Sstevel@tonic-gate ddi_get_name(dip), instance); 563*0Sstevel@tonic-gate return (ENOMEM); 564*0Sstevel@tonic-gate } 565*0Sstevel@tonic-gate 566*0Sstevel@tonic-gate i2c_client_unregister(unitp->pcf8574_hdl); 567*0Sstevel@tonic-gate 568*0Sstevel@tonic-gate ddi_remove_minor_node(dip, NULL); 569*0Sstevel@tonic-gate 570*0Sstevel@tonic-gate mutex_destroy(&unitp->pcf8574_mutex); 571*0Sstevel@tonic-gate 572*0Sstevel@tonic-gate ddi_soft_state_free(pcf8574soft_statep, instance); 573*0Sstevel@tonic-gate 574*0Sstevel@tonic-gate return (DDI_SUCCESS); 575*0Sstevel@tonic-gate 576*0Sstevel@tonic-gate } 577