[PATCH] I2C: New lm92 chip driver
ChangeSet 1.2324, 2005/03/31 14:05:50-08:00, [EMAIL PROTECTED]
[PATCH] I2C: New lm92 chip driver
This is a new i2c chip driver named lm92. It supports the National
Semiconductor LM92 and Maxim MAX6635 chips. This time I did not port the
driver from the lm_sensors project but instead rewrote it. The reason is
that the original driver has a different structure from the other i2c
chip drivers, which would have made maintenance harder.
I don't have a compatible chip myself but could test my code thanks to
Mark Hoffman's i2c-stub fake bus driver. Later on, James Chapman tested
it on a real chip, successfully.
Signed-off-by: Jean Delvare <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
drivers/i2c/chips/Kconfig | 11 +
drivers/i2c/chips/Makefile |1
drivers/i2c/chips/lm92.c | 423 +
3 files changed, 435 insertions(+)
diff -Nru a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig
--- a/drivers/i2c/chips/Kconfig 2005-03-31 15:19:07 -08:00
+++ b/drivers/i2c/chips/Kconfig 2005-03-31 15:19:07 -08:00
@@ -236,6 +236,17 @@
This driver can also be built as a module. If so, the module
will be called lm90.
+config SENSORS_LM92
+ tristate "National Semiconductor LM92 and compatibles"
+ depends on I2C && EXPERIMENTAL
+ select I2C_SENSOR
+ help
+ If you say yes here you get support for National Semiconductor LM92
+ and Maxim MAX6635 sensor chips.
+
+ This driver can also be built as a module. If so, the module
+ will be called lm92.
+
config SENSORS_MAX1619
tristate "Maxim MAX1619 sensor chip"
depends on I2C && EXPERIMENTAL
diff -Nru a/drivers/i2c/chips/Makefile b/drivers/i2c/chips/Makefile
--- a/drivers/i2c/chips/Makefile2005-03-31 15:19:07 -08:00
+++ b/drivers/i2c/chips/Makefile2005-03-31 15:19:07 -08:00
@@ -27,6 +27,7 @@
obj-$(CONFIG_SENSORS_LM85) += lm85.o
obj-$(CONFIG_SENSORS_LM87) += lm87.o
obj-$(CONFIG_SENSORS_LM90) += lm90.o
+obj-$(CONFIG_SENSORS_LM92) += lm92.o
obj-$(CONFIG_SENSORS_MAX1619) += max1619.o
obj-$(CONFIG_SENSORS_M41T00) += m41t00.o
obj-$(CONFIG_SENSORS_PC87360) += pc87360.o
diff -Nru a/drivers/i2c/chips/lm92.c b/drivers/i2c/chips/lm92.c
--- /dev/null Wed Dec 31 16:00:00 196900
+++ b/drivers/i2c/chips/lm92.c 2005-03-31 15:19:07 -08:00
@@ -0,0 +1,423 @@
+/*
+ * lm92 - Hardware monitoring driver
+ * Copyright (C) 2005 Jean Delvare <[EMAIL PROTECTED]>
+ *
+ * Based on the lm90 driver, with some ideas taken from the lm_sensors
+ * lm92 driver as well.
+ *
+ * The LM92 is a sensor chip made by National Semiconductor. It reports
+ * its own temperature with a 0.0625 deg resolution and a 0.33 deg
+ * accuracy. Complete datasheet can be obtained from National's website
+ * at:
+ * http://www.national.com/pf/LM/LM92.html
+ *
+ * This driver also supports the MAX6635 sensor chip made by Maxim.
+ * This chip is compatible with the LM92, but has a lesser accuracy
+ * (1.0 deg). Complete datasheet can be obtained from Maxim's website
+ * at:
+ * http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3074
+ *
+ * Since the LM92 was the first chipset supported by this driver, most
+ * comments will refer to this chipset, but are actually general and
+ * concern all supported chipsets, unless mentioned otherwise.
+ *
+ * Support could easily be added for the National Semiconductor LM76
+ * and Maxim MAX6633 and MAX6634 chips, which are mostly compatible
+ * with the LM92.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include
+#include
+#include
+#include
+#include
+
+
+/* The LM92 and MAX6635 have 2 two-state pins for address selection,
+ resulting in 4 possible addresses. */
+static unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b,
+ I2C_CLIENT_END };
+static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
+
+/* Insmod parameters */
+SENSORS_INSMOD_1(lm92);
+
+/* The LM92 registers */
+#define LM92_REG_CONFIG0x01 /* 8-bit, RW */
+#define LM92_REG_TEMP 0x00 /* 16-bit, RO */
+#define LM92_REG_TEMP_HYST 0x02 /* 16-bit, RW */
+#define LM92_REG_TEMP_CRIT
[PATCH] I2C: New lm92 chip driver
ChangeSet 1.2324, 2005/03/31 14:05:50-08:00, [EMAIL PROTECTED]
[PATCH] I2C: New lm92 chip driver
This is a new i2c chip driver named lm92. It supports the National
Semiconductor LM92 and Maxim MAX6635 chips. This time I did not port the
driver from the lm_sensors project but instead rewrote it. The reason is
that the original driver has a different structure from the other i2c
chip drivers, which would have made maintenance harder.
I don't have a compatible chip myself but could test my code thanks to
Mark Hoffman's i2c-stub fake bus driver. Later on, James Chapman tested
it on a real chip, successfully.
Signed-off-by: Jean Delvare [EMAIL PROTECTED]
Signed-off-by: Greg Kroah-Hartman [EMAIL PROTECTED]
drivers/i2c/chips/Kconfig | 11 +
drivers/i2c/chips/Makefile |1
drivers/i2c/chips/lm92.c | 423 +
3 files changed, 435 insertions(+)
diff -Nru a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig
--- a/drivers/i2c/chips/Kconfig 2005-03-31 15:19:07 -08:00
+++ b/drivers/i2c/chips/Kconfig 2005-03-31 15:19:07 -08:00
@@ -236,6 +236,17 @@
This driver can also be built as a module. If so, the module
will be called lm90.
+config SENSORS_LM92
+ tristate National Semiconductor LM92 and compatibles
+ depends on I2C EXPERIMENTAL
+ select I2C_SENSOR
+ help
+ If you say yes here you get support for National Semiconductor LM92
+ and Maxim MAX6635 sensor chips.
+
+ This driver can also be built as a module. If so, the module
+ will be called lm92.
+
config SENSORS_MAX1619
tristate Maxim MAX1619 sensor chip
depends on I2C EXPERIMENTAL
diff -Nru a/drivers/i2c/chips/Makefile b/drivers/i2c/chips/Makefile
--- a/drivers/i2c/chips/Makefile2005-03-31 15:19:07 -08:00
+++ b/drivers/i2c/chips/Makefile2005-03-31 15:19:07 -08:00
@@ -27,6 +27,7 @@
obj-$(CONFIG_SENSORS_LM85) += lm85.o
obj-$(CONFIG_SENSORS_LM87) += lm87.o
obj-$(CONFIG_SENSORS_LM90) += lm90.o
+obj-$(CONFIG_SENSORS_LM92) += lm92.o
obj-$(CONFIG_SENSORS_MAX1619) += max1619.o
obj-$(CONFIG_SENSORS_M41T00) += m41t00.o
obj-$(CONFIG_SENSORS_PC87360) += pc87360.o
diff -Nru a/drivers/i2c/chips/lm92.c b/drivers/i2c/chips/lm92.c
--- /dev/null Wed Dec 31 16:00:00 196900
+++ b/drivers/i2c/chips/lm92.c 2005-03-31 15:19:07 -08:00
@@ -0,0 +1,423 @@
+/*
+ * lm92 - Hardware monitoring driver
+ * Copyright (C) 2005 Jean Delvare [EMAIL PROTECTED]
+ *
+ * Based on the lm90 driver, with some ideas taken from the lm_sensors
+ * lm92 driver as well.
+ *
+ * The LM92 is a sensor chip made by National Semiconductor. It reports
+ * its own temperature with a 0.0625 deg resolution and a 0.33 deg
+ * accuracy. Complete datasheet can be obtained from National's website
+ * at:
+ * http://www.national.com/pf/LM/LM92.html
+ *
+ * This driver also supports the MAX6635 sensor chip made by Maxim.
+ * This chip is compatible with the LM92, but has a lesser accuracy
+ * (1.0 deg). Complete datasheet can be obtained from Maxim's website
+ * at:
+ * http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3074
+ *
+ * Since the LM92 was the first chipset supported by this driver, most
+ * comments will refer to this chipset, but are actually general and
+ * concern all supported chipsets, unless mentioned otherwise.
+ *
+ * Support could easily be added for the National Semiconductor LM76
+ * and Maxim MAX6633 and MAX6634 chips, which are mostly compatible
+ * with the LM92.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include linux/module.h
+#include linux/init.h
+#include linux/slab.h
+#include linux/i2c.h
+#include linux/i2c-sensor.h
+
+
+/* The LM92 and MAX6635 have 2 two-state pins for address selection,
+ resulting in 4 possible addresses. */
+static unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b,
+ I2C_CLIENT_END };
+static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
+
+/* Insmod parameters */
+SENSORS_INSMOD_1(lm92);
+
+/* The LM92 registers */
+#define LM92_REG_CONFIG0x01 /* 8-bit, RW */
+#define LM92_REG_TEMP 0x00 /* 16-bit, RO */
+#define LM92_REG_TEMP_HYST 0x02 /* 16-bit, RW */
+#define LM92_REG_TEMP_CRIT 0x03 /* 16
