03831d35f7499c87d51205817c93e9a8d42c4baestevel * CDDL HEADER START
03831d35f7499c87d51205817c93e9a8d42c4baestevel * The contents of this file are subject to the terms of the
193974072f41a843678abf5f61979c748687e66bSherry Moore * Common Development and Distribution License (the "License").
193974072f41a843678abf5f61979c748687e66bSherry Moore * You may not use this file except in compliance with the License.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
03831d35f7499c87d51205817c93e9a8d42c4baestevel * See the License for the specific language governing permissions
03831d35f7499c87d51205817c93e9a8d42c4baestevel * and limitations under the License.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * When distributing Covered Code, include this CDDL HEADER in each
03831d35f7499c87d51205817c93e9a8d42c4baestevel * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * If applicable, add the following below this CDDL HEADER, with the
03831d35f7499c87d51205817c93e9a8d42c4baestevel * fields enclosed by brackets "[]" replaced with your own identifying
03831d35f7499c87d51205817c93e9a8d42c4baestevel * information: Portions Copyright [yyyy] [name of copyright owner]
03831d35f7499c87d51205817c93e9a8d42c4baestevel * CDDL HEADER END
07d06da50d310a325b457d6330165aebab1e0064Surya Prakki * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Use is subject to license terms.
89b43686db1fe9681d80a7cf5662730cb9378caeBayard Bell * Copyright (c) 2011 Bayard G. Bell. All rights reserved.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * I2C leaf driver for the PCF8591
03831d35f7499c87d51205817c93e9a8d42c4baestevel * CONTROL OF CHIP
03831d35f7499c87d51205817c93e9a8d42c4baestevel * PCF8591 Temp sensing control register definitions
03831d35f7499c87d51205817c93e9a8d42c4baestevel * ---------------------------------------------
03831d35f7499c87d51205817c93e9a8d42c4baestevel * | 0 | AOE | X | X | 0 | AIF | X | X |
03831d35f7499c87d51205817c93e9a8d42c4baestevel * ---------------------------------------------
03831d35f7499c87d51205817c93e9a8d42c4baestevel * AOE = Analog out enable.. not used on out implementation
03831d35f7499c87d51205817c93e9a8d42c4baestevel * 5 & 4 = Analog Input Programming.. see data sheet for bits..
03831d35f7499c87d51205817c93e9a8d42c4baestevel * AIF = Auto increment flag
03831d35f7499c87d51205817c93e9a8d42c4baestevel * bits 1 & 0 are for the Chennel number.
03831d35f7499c87d51205817c93e9a8d42c4baestevelextern int nct_i2c_transfer(i2c_client_hdl_t i2c_hdl, i2c_transfer_t *i2c_tran);
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic uchar_t _cpu_temps[TEMP_TABLE_SIZE + 4]; /* see attach */
03831d35f7499c87d51205817c93e9a8d42c4baestevel * cb ops (only need ioctl)
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic int pcf8591_read(dev_t dev, struct uio *uiop, cred_t *cred_p);
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic int pcf8591_ioctl(dev_t, int, intptr_t, int, cred_t *, int *);
03831d35f7499c87d51205817c93e9a8d42c4baestevel D_NEW | D_MP | D_HOTPLUG, /* Driver compatibility flag */
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic int pcf8591_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg,
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic int pcf8591_attach(dev_info_t *dip, ddi_attach_cmd_t cmd);
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic int pcf8591_detach(dev_info_t *dip, ddi_detach_cmd_t cmd);
03831d35f7499c87d51205817c93e9a8d42c4baestevel/* kstat routines */
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic void pcf8591_delete_kstats(struct pcf8591_unit *);
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic int pcf8591_read_chip(struct pcf8591_unit *, uint8_t, int);
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic int pcf8591_read_props(struct pcf8591_unit *unitp);
193974072f41a843678abf5f61979c748687e66bSherry Moore "Netract pcf8591 (adio)",
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (error == 0) {
193974072f41a843678abf5f61979c748687e66bSherry Moore sizeof (struct pcf8591_unit), PCF8591_MAX_DEVS);
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (error == 0) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel/*ARGSUSED*/
03831d35f7499c87d51205817c93e9a8d42c4baestevelpcf8591_open(dev_t *devp, int flags, int otyp, cred_t *credp)
193974072f41a843678abf5f61979c748687e66bSherry Moore ddi_get_soft_state(pcf8591_soft_statep, instance);
03831d35f7499c87d51205817c93e9a8d42c4baestevel/*ARGSUSED*/
03831d35f7499c87d51205817c93e9a8d42c4baestevelpcf8591_close(dev_t devp, int flags, int otyp, cred_t *credp)
193974072f41a843678abf5f61979c748687e66bSherry Moore ddi_get_soft_state(pcf8591_soft_statep, instance);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * At this point we don't have a write operation to pcf8591.
193974072f41a843678abf5f61979c748687e66bSherry Moore ddi_get_soft_state(pcf8591_soft_statep, instance);
03831d35f7499c87d51205817c93e9a8d42c4baestevel if ((bytes_to_rw = uiop->uio_resid) > PCF8591_TRAN_SIZE) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Need to serialize all read operations, since there is a single
03831d35f7499c87d51205817c93e9a8d42c4baestevel * i2c_transfer_t structure allocated for all read and write ops.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * We can't share the i2c bus among multiple transactions anyway,
03831d35f7499c87d51205817c93e9a8d42c4baestevel * so this does not affect performance.
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (cv_wait_sig(&unitp->pcf8591_cv, &unitp->umutex) <= 0) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Event sequence:
03831d35f7499c87d51205817c93e9a8d42c4baestevel * 1. set up the control register write, for now we'll always read
03831d35f7499c87d51205817c93e9a8d42c4baestevel * channel 0, which is the only active 8591 port on the Nordica
03831d35f7499c87d51205817c93e9a8d42c4baestevel * TODO: We'll need a minor node for each port that is used.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * 2. increment read count to read the throw-away byte
03831d35f7499c87d51205817c93e9a8d42c4baestevel * 4. throw the first byte away
03831d35f7499c87d51205817c93e9a8d42c4baestevel * 5. then return the data
03831d35f7499c87d51205817c93e9a8d42c4baestevel unitp->i2c_tran->i2c_wbuf[0] = (unitp->pcf8591_inprog |
03831d35f7499c87d51205817c93e9a8d42c4baestevel * read extra byte to throw away the first, (PCF8591 datasheet)
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Throw away the first byte according to PCF8591 datasheet
03831d35f7499c87d51205817c93e9a8d42c4baestevel * If translating, use the second byte.
193974072f41a843678abf5f61979c748687e66bSherry Moore translate_cputemp(unitp->i2c_tran->i2c_rbuf[1]);
03831d35f7499c87d51205817c93e9a8d42c4baestevel/*ARGSUSED*/
03831d35f7499c87d51205817c93e9a8d42c4baestevelpcf8591_read(dev_t dev, struct uio *uiop, cred_t *cred_p)
03831d35f7499c87d51205817c93e9a8d42c4baestevelcall_copyin(caddr_t arg, struct pcf8591_unit *unitp, int mode)
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Save the read and write buffer pointers in the transfer
03831d35f7499c87d51205817c93e9a8d42c4baestevel * structure, otherwise these will get overwritten when we
03831d35f7499c87d51205817c93e9a8d42c4baestevel * do a bcopy. Restore once done.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * copyin the read and write buffers to the saved buffers.
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (ddi_copyin(i2ct.i2c_wbuf, (caddr_t)i2ctp->i2c_wbuf,
03831d35f7499c87d51205817c93e9a8d42c4baestevelcall_copyout(caddr_t arg, struct pcf8591_unit *unitp, int mode)
03831d35f7499c87d51205817c93e9a8d42c4baestevel * We will copyout the last three fields only, skipping
03831d35f7499c87d51205817c93e9a8d42c4baestevel * the remaining ones, before copying the rbuf to the
03831d35f7499c87d51205817c93e9a8d42c4baestevel * user buffer.
03831d35f7499c87d51205817c93e9a8d42c4baestevel int uskip = sizeof (i2c_transfer_t) - 3*sizeof (int16_t),
193974072f41a843678abf5f61979c748687e66bSherry Moore kskip = sizeof (i2c_transfer_t) - 3*sizeof (int16_t);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * First copyin the user structure to the temporary i2ct,
03831d35f7499c87d51205817c93e9a8d42c4baestevel * so that we have the wbuf and rbuf addresses in it.
03831d35f7499c87d51205817c93e9a8d42c4baestevel uskip = sizeof (i2c_transfer_t) - 3 * (sizeof (uint16_t));
03831d35f7499c87d51205817c93e9a8d42c4baestevel * copyout the last three out fields now.
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (ddi_copyout((void *)((intptr_t)i2ctp+kskip), (void *)
193974072f41a843678abf5f61979c748687e66bSherry Moore ((intptr_t)arg + uskip), 3*sizeof (uint16_t), mode)
03831d35f7499c87d51205817c93e9a8d42c4baestevel * In case we have something to write, get the address of the read
193974072f41a843678abf5f61979c748687e66bSherry Moore sizeof (i2c_transfer_t), mode) != DDI_SUCCESS) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel * copyout the read buffer to the saved user buffer in i2ct.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * The ioctls will use the same name as the Javelin ioctls. We
03831d35f7499c87d51205817c93e9a8d42c4baestevel * will have a very restricted set for MC, and unlike Javelin
03831d35f7499c87d51205817c93e9a8d42c4baestevel * will not have a envctrl_chip structure to return values
03831d35f7499c87d51205817c93e9a8d42c4baestevel * from the driver. All we will have is a uint8_t value to
03831d35f7499c87d51205817c93e9a8d42c4baestevel * get or set values from the driver. Also, unlike the Javelin,
03831d35f7499c87d51205817c93e9a8d42c4baestevel * where 'index' is used to specify the input port from where
03831d35f7499c87d51205817c93e9a8d42c4baestevel * temperature is collected, here different minor nodes will be
03831d35f7499c87d51205817c93e9a8d42c4baestevel * created by the driver for each port, eliminating the need for
03831d35f7499c87d51205817c93e9a8d42c4baestevel * 'index' - leaving us with only the value to pass.
03831d35f7499c87d51205817c93e9a8d42c4baestevel/*ARGSUSED*/
03831d35f7499c87d51205817c93e9a8d42c4baestevelpcf8591_ioctl(dev_t dev, int cmd, intptr_t arg, int mode,
193974072f41a843678abf5f61979c748687e66bSherry Moore ddi_get_soft_state(pcf8591_soft_statep, instance);
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (cv_wait_sig(&unitp->pcf8591_cv, &unitp->umutex) <= 0) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Read the status byte from pcf8591 chip. The value will
03831d35f7499c87d51205817c93e9a8d42c4baestevel * be already converted to Celcius by translate_cputemp.
193974072f41a843678abf5f61979c748687e66bSherry Moore (caddr_t)arg, sizeof (uint8_t), mode) != DDI_SUCCESS) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel unitp->current_mode = curr_mode; /* Don't do anything */
03831d35f7499c87d51205817c93e9a8d42c4baestevel /* Testing, may be removed */
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (call_copyin((caddr_t)arg, unitp, mode) != I2C_SUCCESS) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (nct_i2c_transfer(unitp->pcf8591_hdl, unitp->i2c_tran)
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (call_copyout((caddr_t)arg, unitp, mode) != I2C_SUCCESS) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel * TESTING TRANSLATION from "adc" "table" property
03831d35f7499c87d51205817c93e9a8d42c4baestevel * translate thermistor index into temp Celcius
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (call_copyin((caddr_t)arg, unitp, mode) != I2C_SUCCESS) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Throw away the first byte according to PCF8591 datasheet,
03831d35f7499c87d51205817c93e9a8d42c4baestevel * so read two bytes
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (nct_i2c_transfer(unitp->pcf8591_hdl, unitp->i2c_tran)
193974072f41a843678abf5f61979c748687e66bSherry Moore "pcf8591_ioctl: i2c_rlen=%d; "
193974072f41a843678abf5f61979c748687e66bSherry Moore "i2c_rbuf[0,1]=0x%x,0x%x\n",
193974072f41a843678abf5f61979c748687e66bSherry Moore tp->i2c_rlen, tp->i2c_rbuf[0], tp->i2c_rbuf[1]);
03831d35f7499c87d51205817c93e9a8d42c4baestevel#endif /* DEBUG */
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Throw away the first byte according to PCF8591 datasheet
03831d35f7499c87d51205817c93e9a8d42c4baestevel if ((tp->i2c_rbuf[0] = translate_cputemp(tp->i2c_rbuf[1]))
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (call_copyout((caddr_t)arg, unitp, mode) != I2C_SUCCESS) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel unitp = ddi_get_soft_state(pcf8591_soft_statep, instance);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Restore the lengths of the rbuf and wbuf, which was originally
03831d35f7499c87d51205817c93e9a8d42c4baestevel * allocated so that the appropriate amount of rbuf and wbuf are
03831d35f7499c87d51205817c93e9a8d42c4baestevel i2c_transfer_free(unitp->pcf8591_hdl, unitp->i2c_tran);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Free the memory allocated for the properties.
193974072f41a843678abf5f61979c748687e66bSherry Moore ddi_get_soft_state(pcf8591_soft_statep, instance);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Set the busy flag so that future transactions block
03831d35f7499c87d51205817c93e9a8d42c4baestevel * until resume.
193974072f41a843678abf5f61979c748687e66bSherry Moore ddi_get_soft_state(pcf8591_soft_statep, instance);
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (ddi_soft_state_zalloc(pcf8591_soft_statep, instance) != 0) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel unitp = ddi_get_soft_state(pcf8591_soft_statep, instance);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Set the current operating mode to NORMAL_MODE.
03831d35f7499c87d51205817c93e9a8d42c4baestevel unitp->current_mode = ENVCTRL_NORMAL_MODE; /* normal mode */
07d06da50d310a325b457d6330165aebab1e0064Surya Prakki (void) snprintf(unitp->pcf8591_name, PCF8591_NAMELEN,
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Create a minor node corresponding to channel 0 to 3
03831d35f7499c87d51205817c93e9a8d42c4baestevel for (i = 0; i < PCF8591_MAX_CHANS; i++) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (i == 0) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel * We allocate a single i2c_transfer_t structure for all
03831d35f7499c87d51205817c93e9a8d42c4baestevel * i2c transactions.
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (i2c_transfer_alloc(unitp->pcf8591_hdl, &unitp->i2c_tran,
193974072f41a843678abf5f61979c748687e66bSherry Moore MAX_WLEN, MAX_RLEN, KM_SLEEP) != I2C_SUCCESS) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel * The flags will be set to I2C_WR because for all reads from
03831d35f7499c87d51205817c93e9a8d42c4baestevel * the 8591 we need to also write the control byte.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Set the analog programming mode to default. Upper nibble
03831d35f7499c87d51205817c93e9a8d42c4baestevel * in control byte. Four single ended inputs, output not enabled.
03831d35f7499c87d51205817c93e9a8d42c4baestevel unitp->pcf8591_inprog = PCF8591_4SINGLE | PCF8591_ANALOG_INPUT_EN;
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Set the open flag for each channel to 0.
03831d35f7499c87d51205817c93e9a8d42c4baestevel for (i = 0; i < PCF8591_MAX_CHANS; i++) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Set the busy flag to 0.
03831d35f7499c87d51205817c93e9a8d42c4baestevel mutex_init(&unitp->umutex, NULL, MUTEX_DRIVER, NULL);
03831d35f7499c87d51205817c93e9a8d42c4baestevel/* ARGSUSED */
03831d35f7499c87d51205817c93e9a8d42c4baestevelpcf8591_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result)
193974072f41a843678abf5f61979c748687e66bSherry Moore KSTAT_FLAG_PERSISTENT | KSTAT_FLAG_WRITABLE)) == NULL) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel * The kstat fields are already initialized in the attach routine..
03831d35f7499c87d51205817c93e9a8d42c4baestevel unitp->tempksp->ks_update = pcf8591_temp_kstat_update;
03831d35f7499c87d51205817c93e9a8d42c4baestevel /* check for the size of buffer */
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (ksp->ks_data_size != sizeof (unitp->temp_kstats)) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel warn_temp = ((envctrl_temp_t *)kstatp)->warning_threshold;
03831d35f7499c87d51205817c93e9a8d42c4baestevel shutdown_temp = ((envctrl_temp_t *)kstatp)->shutdown_threshold;
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (shutdown_temp < SHUTDOWN_TEMP_MIN || shutdown_temp >
03831d35f7499c87d51205817c93e9a8d42c4baestevel /* write into kstat fields */
03831d35f7499c87d51205817c93e9a8d42c4baestevel unitp->temp_kstats.shutdown_threshold = shutdown_temp;
03831d35f7499c87d51205817c93e9a8d42c4baestevelpcf8591_read_chip(struct pcf8591_unit *unitp, uint8_t channel,
03831d35f7499c87d51205817c93e9a8d42c4baestevel * We need to read an extra byte, since as per specification
03831d35f7499c87d51205817c93e9a8d42c4baestevel * the first byte read should be discarded.
03831d35f7499c87d51205817c93e9a8d42c4baestevel tp->i2c_rbuf[0] = translate_cputemp(tp->i2c_rbuf[1]);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Reads the properties of the pcf8591 device.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Check for the pcf8591_function property, and make sure it's
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
193974072f41a843678abf5f61979c748687e66bSherry Moore "pcf8591_function", &function) != DDI_SUCCESS) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel dbg_print(CE_WARN, "Couldn't find pcf8591_function property");
03831d35f7499c87d51205817c93e9a8d42c4baestevel dbg_print(CE_WARN, "pcf8591_function is not cputemp");
03831d35f7499c87d51205817c93e9a8d42c4baestevel retval = ddi_prop_lookup_string(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
193974072f41a843678abf5f61979c748687e66bSherry Moore "pcf8591_read_props:ddi_prop_lookup_string(%s): \
03831d35f7499c87d51205817c93e9a8d42c4baestevel#endif /* DEBUG */
03831d35f7499c87d51205817c93e9a8d42c4baestevel unitp->props.slave_address = (uint16_t)prop_value[1];
193974072f41a843678abf5f61979c748687e66bSherry Moore "pcf8591:ddi_getlongprop(%s) returns %d,"
193974072f41a843678abf5f61979c748687e66bSherry Moore " i2c_bus,slave=0x%x,0x%x",
03831d35f7499c87d51205817c93e9a8d42c4baestevel#endif /* DEBUG */
193974072f41a843678abf5f61979c748687e66bSherry Moore "pcf8591_read_props:ddi_getlongprop(%s) returns %d,"
193974072f41a843678abf5f61979c748687e66bSherry Moore " default it to 0x%x:0x%X",
03831d35f7499c87d51205817c93e9a8d42c4baestevel#endif /* DEBUG */
07d06da50d310a325b457d6330165aebab1e0064Surya Prakki (void) ddi_getproplen(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
193974072f41a843678abf5f61979c748687e66bSherry Moore "channels-in-use",
03831d35f7499c87d51205817c93e9a8d42c4baestevel unitp->props.num_chans_used /= sizeof (pcf8591_channel_t);
193974072f41a843678abf5f61979c748687e66bSherry Moore "pcf8591_read_props:ddi_prop_lookup_byte_array(%s)"
193974072f41a843678abf5f61979c748687e66bSherry Moore "returns %d\n"
193974072f41a843678abf5f61979c748687e66bSherry Moore "\t\tlength=%d, #elements=%d",
03831d35f7499c87d51205817c93e9a8d42c4baestevel#endif /* DEBUG */
03831d35f7499c87d51205817c93e9a8d42c4baestevel retval = ddi_prop_lookup_string_array(DDI_DEV_T_ANY, dip,
193974072f41a843678abf5f61979c748687e66bSherry Moore "pcf8591_read_props:ddi_prop_lookup_string_array(%s)"
193974072f41a843678abf5f61979c748687e66bSherry Moore "returns %d, length=%d",
03831d35f7499c87d51205817c93e9a8d42c4baestevel for (i = 0; i < prop_len; ++i) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel#endif /* DEBUG */
03831d35f7499c87d51205817c93e9a8d42c4baestevel * The following code was borrowed from envctrltwo.c
03831d35f7499c87d51205817c93e9a8d42c4baestevel * I haven't yet investigated why the copy target is index + 2
03831d35f7499c87d51205817c93e9a8d42c4baestevel retval = ddi_prop_lookup_byte_array(DDI_DEV_T_ANY, dip,
193974072f41a843678abf5f61979c748687e66bSherry Moore DDI_PROP_DONTPASS, "tables", &creg_prop, (uint_t *)&prop_len);
03831d35f7499c87d51205817c93e9a8d42c4baestevel cmn_err(CE_WARN, "%s%d: Unable to read pcf8591 tables property",
03831d35f7499c87d51205817c93e9a8d42c4baestevel#endif /* DEBUG */
03831d35f7499c87d51205817c93e9a8d42c4baestevel for (i = 0; i < prop_len; i++) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel cmn_err(CE_NOTE, "pcf8591_read_props: _cpu_temps size=%d; "
03831d35f7499c87d51205817c93e9a8d42c4baestevel#endif /* DEBUG */
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Read shutdown temp and warning temp properties.
193974072f41a843678abf5f61979c748687e66bSherry Moore DDI_PROP_DONTPASS, "warning-temp", PCF8591_WARNING_TEMP);
193974072f41a843678abf5f61979c748687e66bSherry Moore DDI_PROP_DONTPASS, "shutdown-temp", PCF8591_SHUTDOWN_TEMP);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Fill up the warning and shutdown temp values in kstat structure.