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/ltc1427_impl.h> 42*0Sstevel@tonic-gate 43*0Sstevel@tonic-gate static void *ltc1427soft_statep; 44*0Sstevel@tonic-gate 45*0Sstevel@tonic-gate 46*0Sstevel@tonic-gate static int ltc1427_do_attach(dev_info_t *); 47*0Sstevel@tonic-gate static int ltc1427_do_detach(dev_info_t *); 48*0Sstevel@tonic-gate static int ltc1427_do_resume(void); 49*0Sstevel@tonic-gate static int ltc1427_do_suspend(void); 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate /* 52*0Sstevel@tonic-gate * cb ops (only need ioctl) 53*0Sstevel@tonic-gate */ 54*0Sstevel@tonic-gate static int ltc1427_open(dev_t *, int, int, cred_t *); 55*0Sstevel@tonic-gate static int ltc1427_close(dev_t, int, int, cred_t *); 56*0Sstevel@tonic-gate static int ltc1427_ioctl(dev_t, int, intptr_t, int, cred_t *, int *); 57*0Sstevel@tonic-gate 58*0Sstevel@tonic-gate static struct cb_ops ltc1427_cbops = { 59*0Sstevel@tonic-gate ltc1427_open, /* open */ 60*0Sstevel@tonic-gate ltc1427_close, /* close */ 61*0Sstevel@tonic-gate nodev, /* strategy */ 62*0Sstevel@tonic-gate nodev, /* print */ 63*0Sstevel@tonic-gate nodev, /* dump */ 64*0Sstevel@tonic-gate nodev, /* read */ 65*0Sstevel@tonic-gate nodev, /* write */ 66*0Sstevel@tonic-gate ltc1427_ioctl, /* ioctl */ 67*0Sstevel@tonic-gate nodev, /* devmap */ 68*0Sstevel@tonic-gate nodev, /* mmap */ 69*0Sstevel@tonic-gate nodev, /* segmap */ 70*0Sstevel@tonic-gate nochpoll, /* poll */ 71*0Sstevel@tonic-gate ddi_prop_op, /* cb_prop_op */ 72*0Sstevel@tonic-gate NULL, /* streamtab */ 73*0Sstevel@tonic-gate D_NEW | D_MP | D_HOTPLUG, /* Driver compatibility flag */ 74*0Sstevel@tonic-gate CB_REV, /* rev */ 75*0Sstevel@tonic-gate nodev, /* int (*cb_aread)() */ 76*0Sstevel@tonic-gate nodev /* int (*cb_awrite)() */ 77*0Sstevel@tonic-gate }; 78*0Sstevel@tonic-gate 79*0Sstevel@tonic-gate /* 80*0Sstevel@tonic-gate * dev ops 81*0Sstevel@tonic-gate */ 82*0Sstevel@tonic-gate static int ltc1427_attach(dev_info_t *dip, ddi_attach_cmd_t cmd); 83*0Sstevel@tonic-gate static int ltc1427_detach(dev_info_t *dip, ddi_detach_cmd_t cmd); 84*0Sstevel@tonic-gate 85*0Sstevel@tonic-gate static struct dev_ops ltc1427_ops = { 86*0Sstevel@tonic-gate DEVO_REV, 87*0Sstevel@tonic-gate 0, 88*0Sstevel@tonic-gate ddi_getinfo_1to1, 89*0Sstevel@tonic-gate nulldev, 90*0Sstevel@tonic-gate nulldev, 91*0Sstevel@tonic-gate ltc1427_attach, 92*0Sstevel@tonic-gate ltc1427_detach, 93*0Sstevel@tonic-gate nodev, 94*0Sstevel@tonic-gate <c1427_cbops, 95*0Sstevel@tonic-gate NULL 96*0Sstevel@tonic-gate }; 97*0Sstevel@tonic-gate 98*0Sstevel@tonic-gate extern struct mod_ops mod_driverops; 99*0Sstevel@tonic-gate 100*0Sstevel@tonic-gate static struct modldrv ltc1427_modldrv = { 101*0Sstevel@tonic-gate &mod_driverops, /* type of module - driver */ 102*0Sstevel@tonic-gate "LTC1427 i2c device driver: v%I%", 103*0Sstevel@tonic-gate <c1427_ops 104*0Sstevel@tonic-gate }; 105*0Sstevel@tonic-gate 106*0Sstevel@tonic-gate static struct modlinkage ltc1427_modlinkage = { 107*0Sstevel@tonic-gate MODREV_1, 108*0Sstevel@tonic-gate <c1427_modldrv, 109*0Sstevel@tonic-gate 0 110*0Sstevel@tonic-gate }; 111*0Sstevel@tonic-gate 112*0Sstevel@tonic-gate 113*0Sstevel@tonic-gate int 114*0Sstevel@tonic-gate _init(void) 115*0Sstevel@tonic-gate { 116*0Sstevel@tonic-gate int error; 117*0Sstevel@tonic-gate 118*0Sstevel@tonic-gate error = mod_install(<c1427_modlinkage); 119*0Sstevel@tonic-gate 120*0Sstevel@tonic-gate if (!error) 121*0Sstevel@tonic-gate (void) ddi_soft_state_init(<c1427soft_statep, 122*0Sstevel@tonic-gate sizeof (struct ltc1427_unit), 1); 123*0Sstevel@tonic-gate return (error); 124*0Sstevel@tonic-gate } 125*0Sstevel@tonic-gate 126*0Sstevel@tonic-gate int 127*0Sstevel@tonic-gate _fini(void) 128*0Sstevel@tonic-gate { 129*0Sstevel@tonic-gate int error; 130*0Sstevel@tonic-gate 131*0Sstevel@tonic-gate error = mod_remove(<c1427_modlinkage); 132*0Sstevel@tonic-gate if (!error) 133*0Sstevel@tonic-gate ddi_soft_state_fini(<c1427soft_statep); 134*0Sstevel@tonic-gate 135*0Sstevel@tonic-gate return (error); 136*0Sstevel@tonic-gate } 137*0Sstevel@tonic-gate 138*0Sstevel@tonic-gate int 139*0Sstevel@tonic-gate _info(struct modinfo *modinfop) 140*0Sstevel@tonic-gate { 141*0Sstevel@tonic-gate return (mod_info(<c1427_modlinkage, modinfop)); 142*0Sstevel@tonic-gate } 143*0Sstevel@tonic-gate 144*0Sstevel@tonic-gate static int 145*0Sstevel@tonic-gate ltc1427_open(dev_t *devp, int flags, int otyp, cred_t *credp) 146*0Sstevel@tonic-gate { 147*0Sstevel@tonic-gate _NOTE(ARGUNUSED(credp)) 148*0Sstevel@tonic-gate 149*0Sstevel@tonic-gate struct ltc1427_unit *unitp; 150*0Sstevel@tonic-gate int instance; 151*0Sstevel@tonic-gate int error = 0; 152*0Sstevel@tonic-gate 153*0Sstevel@tonic-gate instance = getminor(*devp); 154*0Sstevel@tonic-gate 155*0Sstevel@tonic-gate if (instance < 0) { 156*0Sstevel@tonic-gate return (ENXIO); 157*0Sstevel@tonic-gate } 158*0Sstevel@tonic-gate 159*0Sstevel@tonic-gate unitp = (struct ltc1427_unit *) 160*0Sstevel@tonic-gate ddi_get_soft_state(ltc1427soft_statep, instance); 161*0Sstevel@tonic-gate 162*0Sstevel@tonic-gate if (unitp == NULL) { 163*0Sstevel@tonic-gate return (ENXIO); 164*0Sstevel@tonic-gate } 165*0Sstevel@tonic-gate 166*0Sstevel@tonic-gate if (otyp != OTYP_CHR) { 167*0Sstevel@tonic-gate return (EINVAL); 168*0Sstevel@tonic-gate } 169*0Sstevel@tonic-gate 170*0Sstevel@tonic-gate mutex_enter(&unitp->ltc1427_mutex); 171*0Sstevel@tonic-gate 172*0Sstevel@tonic-gate if (flags & FEXCL) { 173*0Sstevel@tonic-gate if (unitp->ltc1427_oflag != 0) { 174*0Sstevel@tonic-gate error = EBUSY; 175*0Sstevel@tonic-gate } else { 176*0Sstevel@tonic-gate unitp->ltc1427_oflag = FEXCL; 177*0Sstevel@tonic-gate } 178*0Sstevel@tonic-gate } else { 179*0Sstevel@tonic-gate if (unitp->ltc1427_oflag == FEXCL) { 180*0Sstevel@tonic-gate error = EBUSY; 181*0Sstevel@tonic-gate } else { 182*0Sstevel@tonic-gate unitp->ltc1427_oflag = FOPEN; 183*0Sstevel@tonic-gate } 184*0Sstevel@tonic-gate } 185*0Sstevel@tonic-gate 186*0Sstevel@tonic-gate mutex_exit(&unitp->ltc1427_mutex); 187*0Sstevel@tonic-gate 188*0Sstevel@tonic-gate return (error); 189*0Sstevel@tonic-gate } 190*0Sstevel@tonic-gate 191*0Sstevel@tonic-gate static int 192*0Sstevel@tonic-gate ltc1427_close(dev_t dev, int flags, int otyp, cred_t *credp) 193*0Sstevel@tonic-gate { 194*0Sstevel@tonic-gate _NOTE(ARGUNUSED(flags, otyp, credp)) 195*0Sstevel@tonic-gate 196*0Sstevel@tonic-gate struct ltc1427_unit *unitp; 197*0Sstevel@tonic-gate int instance; 198*0Sstevel@tonic-gate 199*0Sstevel@tonic-gate instance = getminor(dev); 200*0Sstevel@tonic-gate 201*0Sstevel@tonic-gate if (instance < 0) { 202*0Sstevel@tonic-gate return (ENXIO); 203*0Sstevel@tonic-gate } 204*0Sstevel@tonic-gate 205*0Sstevel@tonic-gate unitp = (struct ltc1427_unit *) 206*0Sstevel@tonic-gate ddi_get_soft_state(ltc1427soft_statep, instance); 207*0Sstevel@tonic-gate 208*0Sstevel@tonic-gate if (unitp == NULL) { 209*0Sstevel@tonic-gate return (ENXIO); 210*0Sstevel@tonic-gate } 211*0Sstevel@tonic-gate 212*0Sstevel@tonic-gate mutex_enter(&unitp->ltc1427_mutex); 213*0Sstevel@tonic-gate 214*0Sstevel@tonic-gate unitp->ltc1427_oflag = 0; 215*0Sstevel@tonic-gate 216*0Sstevel@tonic-gate mutex_exit(&unitp->ltc1427_mutex); 217*0Sstevel@tonic-gate return (DDI_SUCCESS); 218*0Sstevel@tonic-gate } 219*0Sstevel@tonic-gate 220*0Sstevel@tonic-gate static int 221*0Sstevel@tonic-gate ltc1427_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, 222*0Sstevel@tonic-gate cred_t *credp, int *rvalp) 223*0Sstevel@tonic-gate { 224*0Sstevel@tonic-gate _NOTE(ARGUNUSED(credp, rvalp)) 225*0Sstevel@tonic-gate 226*0Sstevel@tonic-gate struct ltc1427_unit *unitp; 227*0Sstevel@tonic-gate int instance; 228*0Sstevel@tonic-gate int err = 0; 229*0Sstevel@tonic-gate i2c_transfer_t *i2c_tran_pointer; 230*0Sstevel@tonic-gate int32_t fan_speed; 231*0Sstevel@tonic-gate 232*0Sstevel@tonic-gate if (arg == NULL) { 233*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "LTC1427: ioctl: arg passed in to ioctl " 234*0Sstevel@tonic-gate "= NULL\n")); 235*0Sstevel@tonic-gate err = EINVAL; 236*0Sstevel@tonic-gate return (err); 237*0Sstevel@tonic-gate } 238*0Sstevel@tonic-gate instance = getminor(dev); 239*0Sstevel@tonic-gate unitp = (struct ltc1427_unit *) 240*0Sstevel@tonic-gate ddi_get_soft_state(ltc1427soft_statep, instance); 241*0Sstevel@tonic-gate 242*0Sstevel@tonic-gate mutex_enter(&unitp->ltc1427_mutex); 243*0Sstevel@tonic-gate 244*0Sstevel@tonic-gate switch (cmd) { 245*0Sstevel@tonic-gate case I2C_GET_OUTPUT: 246*0Sstevel@tonic-gate D1CMN_ERR((CE_NOTE, "current_set_flag = %d\n", 247*0Sstevel@tonic-gate unitp->current_set_flag)); 248*0Sstevel@tonic-gate if (unitp->current_set_flag == 0) { 249*0Sstevel@tonic-gate err = EIO; 250*0Sstevel@tonic-gate break; 251*0Sstevel@tonic-gate } else { 252*0Sstevel@tonic-gate if (ddi_copyout((caddr_t)&unitp->current_value, 253*0Sstevel@tonic-gate (caddr_t)arg, sizeof (int32_t), 254*0Sstevel@tonic-gate mode) != DDI_SUCCESS) { 255*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, 256*0Sstevel@tonic-gate "%s: Failed in I2C_GET_OUTPUT " 257*0Sstevel@tonic-gate "ddi_copyout routine\n", 258*0Sstevel@tonic-gate unitp->ltc1427_name)); 259*0Sstevel@tonic-gate err = EFAULT; 260*0Sstevel@tonic-gate break; 261*0Sstevel@tonic-gate } 262*0Sstevel@tonic-gate } 263*0Sstevel@tonic-gate break; 264*0Sstevel@tonic-gate 265*0Sstevel@tonic-gate case I2C_SET_OUTPUT: 266*0Sstevel@tonic-gate if (ddi_copyin((caddr_t)arg, (caddr_t)&fan_speed, 267*0Sstevel@tonic-gate sizeof (int32_t), mode) != DDI_SUCCESS) { 268*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, 269*0Sstevel@tonic-gate "%s: Failed in I2C_SET_OUTPUT " 270*0Sstevel@tonic-gate "ioctl before switch\n", 271*0Sstevel@tonic-gate unitp->ltc1427_name)); 272*0Sstevel@tonic-gate err = EFAULT; 273*0Sstevel@tonic-gate break; 274*0Sstevel@tonic-gate } 275*0Sstevel@tonic-gate 276*0Sstevel@tonic-gate (void) i2c_transfer_alloc(unitp->ltc1427_hdl, 277*0Sstevel@tonic-gate &i2c_tran_pointer, 2, 0, I2C_SLEEP); 278*0Sstevel@tonic-gate if (i2c_tran_pointer == NULL) { 279*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, 280*0Sstevel@tonic-gate "%s: Failed in I2C_SET_OUTPUT " 281*0Sstevel@tonic-gate "i2c_transfer_pointer not allocated\n", 282*0Sstevel@tonic-gate unitp->ltc1427_name)); 283*0Sstevel@tonic-gate err = ENOMEM; 284*0Sstevel@tonic-gate break; 285*0Sstevel@tonic-gate } 286*0Sstevel@tonic-gate i2c_tran_pointer->i2c_flags = I2C_WR; 287*0Sstevel@tonic-gate i2c_tran_pointer->i2c_wbuf[0] = 288*0Sstevel@tonic-gate (uchar_t)((fan_speed >> 8) & 0x03); 289*0Sstevel@tonic-gate i2c_tran_pointer->i2c_wbuf[1] = 290*0Sstevel@tonic-gate (uchar_t)((fan_speed) & 0x000000ff); 291*0Sstevel@tonic-gate 292*0Sstevel@tonic-gate err = i2c_transfer(unitp->ltc1427_hdl, i2c_tran_pointer); 293*0Sstevel@tonic-gate if (!err) { 294*0Sstevel@tonic-gate unitp->current_value = fan_speed; 295*0Sstevel@tonic-gate unitp->current_set_flag = 1; 296*0Sstevel@tonic-gate } 297*0Sstevel@tonic-gate i2c_transfer_free(unitp->ltc1427_hdl, i2c_tran_pointer); 298*0Sstevel@tonic-gate break; 299*0Sstevel@tonic-gate 300*0Sstevel@tonic-gate default: 301*0Sstevel@tonic-gate D2CMN_ERR((CE_WARN, "%s: Invalid IOCTL cmd: %x\n", 302*0Sstevel@tonic-gate unitp->ltc1427_name, cmd)); 303*0Sstevel@tonic-gate err = EINVAL; 304*0Sstevel@tonic-gate } 305*0Sstevel@tonic-gate 306*0Sstevel@tonic-gate mutex_exit(&unitp->ltc1427_mutex); 307*0Sstevel@tonic-gate return (err); 308*0Sstevel@tonic-gate } 309*0Sstevel@tonic-gate 310*0Sstevel@tonic-gate static int 311*0Sstevel@tonic-gate ltc1427_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 312*0Sstevel@tonic-gate { 313*0Sstevel@tonic-gate switch (cmd) { 314*0Sstevel@tonic-gate case DDI_ATTACH: 315*0Sstevel@tonic-gate return (ltc1427_do_attach(dip)); 316*0Sstevel@tonic-gate case DDI_RESUME: 317*0Sstevel@tonic-gate return (ltc1427_do_resume()); 318*0Sstevel@tonic-gate default: 319*0Sstevel@tonic-gate return (DDI_FAILURE); 320*0Sstevel@tonic-gate } 321*0Sstevel@tonic-gate } 322*0Sstevel@tonic-gate 323*0Sstevel@tonic-gate static int 324*0Sstevel@tonic-gate ltc1427_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 325*0Sstevel@tonic-gate { 326*0Sstevel@tonic-gate switch (cmd) { 327*0Sstevel@tonic-gate case DDI_DETACH: 328*0Sstevel@tonic-gate return (ltc1427_do_detach(dip)); 329*0Sstevel@tonic-gate case DDI_SUSPEND: 330*0Sstevel@tonic-gate return (ltc1427_do_suspend()); 331*0Sstevel@tonic-gate default: 332*0Sstevel@tonic-gate return (DDI_FAILURE); 333*0Sstevel@tonic-gate } 334*0Sstevel@tonic-gate } 335*0Sstevel@tonic-gate 336*0Sstevel@tonic-gate static int 337*0Sstevel@tonic-gate ltc1427_do_attach(dev_info_t *dip) 338*0Sstevel@tonic-gate { 339*0Sstevel@tonic-gate struct ltc1427_unit *unitp; 340*0Sstevel@tonic-gate int instance; 341*0Sstevel@tonic-gate 342*0Sstevel@tonic-gate instance = ddi_get_instance(dip); 343*0Sstevel@tonic-gate 344*0Sstevel@tonic-gate if (ddi_soft_state_zalloc(ltc1427soft_statep, instance) != 0) { 345*0Sstevel@tonic-gate cmn_err(CE_WARN, "%s%d: failed to zalloc softstate\n", 346*0Sstevel@tonic-gate ddi_get_name(dip), instance); 347*0Sstevel@tonic-gate return (DDI_FAILURE); 348*0Sstevel@tonic-gate } 349*0Sstevel@tonic-gate 350*0Sstevel@tonic-gate unitp = ddi_get_soft_state(ltc1427soft_statep, instance); 351*0Sstevel@tonic-gate 352*0Sstevel@tonic-gate if (unitp == NULL) { 353*0Sstevel@tonic-gate cmn_err(CE_WARN, "%s%d: unitp not filled\n", 354*0Sstevel@tonic-gate ddi_get_name(dip), instance); 355*0Sstevel@tonic-gate return (ENOMEM); 356*0Sstevel@tonic-gate } 357*0Sstevel@tonic-gate 358*0Sstevel@tonic-gate (void) snprintf(unitp->ltc1427_name, sizeof (unitp->ltc1427_name), 359*0Sstevel@tonic-gate "%s%d", ddi_node_name(dip), instance); 360*0Sstevel@tonic-gate 361*0Sstevel@tonic-gate if (ddi_create_minor_node(dip, "ltc1427", S_IFCHR, instance, 362*0Sstevel@tonic-gate "ddi_i2c:adio", NULL) == DDI_FAILURE) { 363*0Sstevel@tonic-gate cmn_err(CE_WARN, "%s ddi_create_minor_node failed for " 364*0Sstevel@tonic-gate "%s\n", unitp->ltc1427_name, "ltc1427"); 365*0Sstevel@tonic-gate ddi_soft_state_free(ltc1427soft_statep, instance); 366*0Sstevel@tonic-gate 367*0Sstevel@tonic-gate return (DDI_FAILURE); 368*0Sstevel@tonic-gate } 369*0Sstevel@tonic-gate 370*0Sstevel@tonic-gate if (i2c_client_register(dip, &unitp->ltc1427_hdl) != I2C_SUCCESS) { 371*0Sstevel@tonic-gate ddi_remove_minor_node(dip, NULL); 372*0Sstevel@tonic-gate ddi_soft_state_free(ltc1427soft_statep, instance); 373*0Sstevel@tonic-gate 374*0Sstevel@tonic-gate return (DDI_FAILURE); 375*0Sstevel@tonic-gate } 376*0Sstevel@tonic-gate 377*0Sstevel@tonic-gate mutex_init(&unitp->ltc1427_mutex, NULL, MUTEX_DRIVER, NULL); 378*0Sstevel@tonic-gate 379*0Sstevel@tonic-gate return (DDI_SUCCESS); 380*0Sstevel@tonic-gate } 381*0Sstevel@tonic-gate 382*0Sstevel@tonic-gate static int 383*0Sstevel@tonic-gate ltc1427_do_resume() 384*0Sstevel@tonic-gate { 385*0Sstevel@tonic-gate int ret = DDI_SUCCESS; 386*0Sstevel@tonic-gate 387*0Sstevel@tonic-gate return (ret); 388*0Sstevel@tonic-gate } 389*0Sstevel@tonic-gate 390*0Sstevel@tonic-gate static int 391*0Sstevel@tonic-gate ltc1427_do_suspend() 392*0Sstevel@tonic-gate { 393*0Sstevel@tonic-gate int ret = DDI_SUCCESS; 394*0Sstevel@tonic-gate 395*0Sstevel@tonic-gate return (ret); 396*0Sstevel@tonic-gate } 397*0Sstevel@tonic-gate 398*0Sstevel@tonic-gate static int 399*0Sstevel@tonic-gate ltc1427_do_detach(dev_info_t *dip) 400*0Sstevel@tonic-gate { 401*0Sstevel@tonic-gate struct ltc1427_unit *unitp; 402*0Sstevel@tonic-gate int instance; 403*0Sstevel@tonic-gate 404*0Sstevel@tonic-gate instance = ddi_get_instance(dip); 405*0Sstevel@tonic-gate 406*0Sstevel@tonic-gate unitp = ddi_get_soft_state(ltc1427soft_statep, instance); 407*0Sstevel@tonic-gate 408*0Sstevel@tonic-gate if (unitp == NULL) { 409*0Sstevel@tonic-gate cmn_err(CE_WARN, "%s%d: unitp not filled\n", 410*0Sstevel@tonic-gate ddi_get_name(dip), instance); 411*0Sstevel@tonic-gate return (ENOMEM); 412*0Sstevel@tonic-gate } 413*0Sstevel@tonic-gate 414*0Sstevel@tonic-gate i2c_client_unregister(unitp->ltc1427_hdl); 415*0Sstevel@tonic-gate 416*0Sstevel@tonic-gate ddi_remove_minor_node(dip, NULL); 417*0Sstevel@tonic-gate 418*0Sstevel@tonic-gate mutex_destroy(&unitp->ltc1427_mutex); 419*0Sstevel@tonic-gate 420*0Sstevel@tonic-gate ddi_soft_state_free(ltc1427soft_statep, instance); 421*0Sstevel@tonic-gate 422*0Sstevel@tonic-gate return (DDI_SUCCESS); 423*0Sstevel@tonic-gate } 424