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[src/trunk]: src/sys/dev/i2c Import smcsmon(4) driver for SMSC LPC47M192 hard...
details: https://anonhg.NetBSD.org/src/rev/03050c4d4073
branches: trunk
changeset: 752284:03050c4d4073
user: pgoyette <pgoyette%NetBSD.org@localhost>
date: Mon Feb 22 03:50:56 2010 +0000
description:
Import smcsmon(4) driver for SMSC LPC47M192 hardware monitor
>From Takahiro HAYASHI in PR kern/40420
diffstat:
sys/dev/i2c/files.i2c | 7 +-
sys/dev/i2c/smscmon.c | 331 +++++++++++++++++++++++++++++++++++++++++++++++
sys/dev/i2c/smscmonvar.h | 68 +++++++++
3 files changed, 405 insertions(+), 1 deletions(-)
diffs (truncated from 425 to 300 lines):
diff -r 36f69339e658 -r 03050c4d4073 sys/dev/i2c/files.i2c
--- a/sys/dev/i2c/files.i2c Mon Feb 22 00:16:31 2010 +0000
+++ b/sys/dev/i2c/files.i2c Mon Feb 22 03:50:56 2010 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: files.i2c,v 1.25 2009/05/14 13:22:26 pgoyette Exp $
+# $NetBSD: files.i2c,v 1.26 2010/02/22 03:50:56 pgoyette Exp $
defflag opt_i2cbus.h I2C_SCAN
define i2cbus { }
@@ -115,3 +115,8 @@
device admtemp: sysmon_envsys
attach admtemp at iic
file dev/i2c/adm1021.c admtemp
+
+# SMSC LPC47M192 hardware monitor
+device smscmon: sysmon_envsys
+attach smscmon at iic
+file dev/i2c/smscmon.c smscmon
diff -r 36f69339e658 -r 03050c4d4073 sys/dev/i2c/smscmon.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/i2c/smscmon.c Mon Feb 22 03:50:56 2010 +0000
@@ -0,0 +1,331 @@
+/* $NetBSD: smscmon.c,v 1.1 2010/02/22 03:50:56 pgoyette Exp $ */
+
+/*
+ * Copyright (c) 2009 Takahiro Hayashi
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: smscmon.c,v 1.1 2010/02/22 03:50:56 pgoyette Exp $");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+
+#include <dev/i2c/i2cvar.h>
+#include <dev/sysmon/sysmonvar.h>
+#include <dev/i2c/smscmonvar.h>
+
+/*
+ * A driver for SMSC LPC47M192 hardware monitor at SMBus.
+ * This driver supports 8 Voltage and 3 Temperature sensors.
+ * Fan RPM monitoring is not supported in this driver because
+ * they are seen on ISA bus.
+ *
+ * Datasheet available (as of Feb. 20, 2010) at
+ * http://pdf1.alldatasheet.com/datasheet-pdf/view/109752/SMSC/LPC47M192-NC.html
+ */
+
+static int smscmon_match(device_t, cfdata_t, void *);
+static void smscmon_attach(device_t, device_t, void *);
+static uint8_t smscmon_readreg(struct smscmon_sc *, int);
+static void smscmon_writereg(struct smscmon_sc *, int, int);
+static void smscmon_sensors_setup(struct smscmon_sc *, struct smscmon_sensor *);
+static void smscmon_refresh_volt(struct smscmon_sc *, envsys_data_t *);
+static void smscmon_refresh_temp(struct smscmon_sc *, envsys_data_t *);
+static void smscmon_refresh(struct sysmon_envsys *, envsys_data_t *);
+
+CFATTACH_DECL_NEW(smscmon, sizeof(struct smscmon_sc),
+ smscmon_match, smscmon_attach, NULL, NULL);
+
+static struct smscmon_sensor smscmon_lpc47m192[] = {
+ {
+ .desc = "+2.5V",
+ .type = ENVSYS_SVOLTS_DC,
+ .reg = 0x20,
+ .refresh = smscmon_refresh_volt,
+ .vmin = 13000,
+ .vmax = 3320000
+ },
+ {
+ .desc = "Vccp",
+ .type = ENVSYS_SVOLTS_DC,
+ .reg = 0x21,
+ .refresh = smscmon_refresh_volt,
+ .vmin = 12000,
+ .vmax = 2988000
+ },
+ {
+ .desc = "+3.3V",
+ .type = ENVSYS_SVOLTS_DC,
+ .reg = 0x22,
+ .refresh = smscmon_refresh_volt,
+ .vmin = 17000,
+ .vmax = 4383000
+ },
+ {
+ .desc = "+5V",
+ .type = ENVSYS_SVOLTS_DC,
+ .reg = 0x23,
+ .refresh = smscmon_refresh_volt,
+ .vmin = 26000,
+ .vmax = 6640000
+ },
+ {
+ .desc = "+12V",
+ .type = ENVSYS_SVOLTS_DC,
+ .reg = 0x24,
+ .refresh = smscmon_refresh_volt,
+ .vmin = 62000,
+ .vmax = 15938000
+ },
+ {
+ .desc = "Vcc",
+ .type = ENVSYS_SVOLTS_DC,
+ .reg = 0x25,
+ .refresh = smscmon_refresh_volt,
+ .vmin = 17000,
+ .vmax = 4383000
+ },
+ {
+ .desc = "+1.5V",
+ .type = ENVSYS_SVOLTS_DC,
+ .reg = 0x50,
+ .refresh = smscmon_refresh_volt,
+ .vmin = 8000,
+ .vmax = 1992000
+ },
+ {
+ .desc = "+1.8V",
+ .type = ENVSYS_SVOLTS_DC,
+ .reg = 0x51,
+ .refresh = smscmon_refresh_volt,
+ .vmin = 9000,
+ .vmax = 2391000
+ },
+ {
+ .desc = "Remote Temp1",
+ .type = ENVSYS_STEMP,
+ .reg = 0x26,
+ .refresh = smscmon_refresh_temp,
+ .vmin = 0,
+ .vmax = 0
+ },
+ {
+ .desc = "Ambient Temp",
+ .type = ENVSYS_STEMP,
+ .reg = 0x27,
+ .refresh = smscmon_refresh_temp,
+ .vmin = 0,
+ .vmax = 0
+ },
+ {
+ .desc = "Remote Temp2",
+ .type = ENVSYS_STEMP,
+ .reg = 0x52,
+ .refresh = smscmon_refresh_temp,
+ .vmax = 0,
+ .vmin = 0
+ },
+
+ { .desc = NULL }
+};
+
+static int
+smscmon_match(device_t parent, cfdata_t match, void *aux)
+{
+ struct i2c_attach_args *ia = aux;
+ uint8_t cmd, cid, rev;
+
+ /* Address is hardwired to 010_110x */
+ if ((ia->ia_addr & SMSCMON_ADDR_MASK) != SMSCMON_ADDR)
+ return 0;
+
+ iic_acquire_bus(ia->ia_tag, 0);
+
+ cmd = SMSCMON_REG_COMPANY;
+ if (iic_exec(ia->ia_tag, I2C_OP_READ_WITH_STOP,
+ ia->ia_addr, &cmd, sizeof cmd, &cid, sizeof cid, 0)) {
+ iic_release_bus(ia->ia_tag, 0);
+ return 0;
+ }
+ cmd = SMSCMON_REG_STEPPING;
+ if (iic_exec(ia->ia_tag, I2C_OP_READ_WITH_STOP,
+ ia->ia_addr, &cmd, sizeof cmd, &rev, sizeof rev, 0)) {
+ iic_release_bus(ia->ia_tag, 0);
+ return 0;
+ }
+
+ if ( cid != SMSC_CID_47M192 || rev != SMSC_REV_47M192) {
+ iic_release_bus(ia->ia_tag, 0);
+ return 0;
+ }
+
+ iic_release_bus(ia->ia_tag, 0);
+ return 1;
+}
+
+static void
+smscmon_attach(device_t parent, device_t self, void *aux)
+{
+ struct smscmon_sc *sc = device_private(self);
+ struct i2c_attach_args *ia = aux;
+ uint8_t cid, rev;
+ int i;
+
+ sc->sc_dev = self;
+ sc->sc_tag = ia->ia_tag;
+ sc->sc_addr = ia->ia_addr;
+ sc->smscmon_readreg = smscmon_readreg;
+ sc->smscmon_writereg = smscmon_writereg;
+ sc->smscmon_sensors = NULL;
+
+ cid = sc->smscmon_readreg(sc, SMSCMON_REG_COMPANY);
+ rev = sc->smscmon_readreg(sc, SMSCMON_REG_STEPPING);
+ switch (cid) {
+ case SMSC_CID_47M192:
+ if (rev == SMSC_REV_47M192) {
+ smscmon_sensors_setup(sc, smscmon_lpc47m192);
+ aprint_normal(": LPC47M192 hardware monitor\n");
+ }
+ break;
+ default:
+ /* unknown chip */
+ break;
+ }
+
+ if (sc->smscmon_sensors == NULL) {
+ aprint_normal(": unknown chip: cid 0x%02x rev 0x%02x\n",
+ cid, rev);
+ return;
+ }
+
+ if ((sc->sc_sme = sysmon_envsys_create()) == NULL) {
+ aprint_error_dev(sc->sc_dev,
+ "unable to create sysmon structure\n");
+ return;
+ }
+
+ for (i = 0; i < sc->numsensors; i++) {
+ if (sysmon_envsys_sensor_attach(sc->sc_sme, &sc->sensors[i])) {
+ aprint_error_dev(sc->sc_dev,
+ "unable to attach sensor\n");
+ sysmon_envsys_destroy(sc->sc_sme);
+ return;
+ }
+ }
+
+ sc->sc_sme->sme_name = device_xname(sc->sc_dev);
+ sc->sc_sme->sme_cookie = sc;
+ sc->sc_sme->sme_refresh = smscmon_refresh;
+ if (sysmon_envsys_register(sc->sc_sme)) {
+ aprint_error_dev(sc->sc_dev,
+ "unable to register with sysmon\n");
+ sysmon_envsys_destroy(sc->sc_sme);
+ return;
+ }
+}
+
+static uint8_t
+smscmon_readreg(struct smscmon_sc *sc, int reg)
+{
+ uint8_t cmd, data;
+
+ iic_acquire_bus(sc->sc_tag, 0);
+
+ cmd = reg;
+ iic_smbus_read_byte(sc->sc_tag, sc->sc_addr, cmd, &data, 0);
+
+ iic_release_bus(sc->sc_tag, 0);
+
+ return data;
+}
+
+static void
+smscmon_writereg(struct smscmon_sc *sc, int reg, int val)
+{
+ uint8_t cmd, data;
+
+ iic_acquire_bus(sc->sc_tag, 0);
+
+ cmd = reg;
+ data = val;
+ iic_smbus_write_byte(sc->sc_tag, sc->sc_addr, cmd, data, 0);
+
+ iic_release_bus(sc->sc_tag, 0);
+}
+
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