hwmon: add generic GPIO fan driver

This patch adds hwmon support for fans connected to GPIO lines. Platform specific information such as GPIO pinout and speed conversion array (rpm from/to GPIO value) are passed to the driver via platform_data. Signed-off-by: Simon Guinot <sguinot@lacie.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
mariux64 · Oct 25, 2010 · d6fe136 · d6fe136
1 parent 3247800
commit d6fe136
Show file tree

Hide file tree

Showing 4 changed files with 604 additions and 0 deletions.
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
@@ -399,6 +399,15 @@ config SENSORS_GL520SM
 	  This driver can also be built as a module.  If so, the module
 	  will be called gl520sm.
 
+config SENSORS_GPIO_FAN
+	tristate "GPIO fan"
+	depends on GENERIC_GPIO
+	help
+	  If you say yes here you get support for fans connected to GPIO lines.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called gpio-fan.
+
 config SENSORS_CORETEMP
 	tristate "Intel Core/Core2/Atom temperature sensor"
 	depends on X86 && PCI && EXPERIMENTAL

diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
@@ -51,6 +51,7 @@ obj-$(CONFIG_SENSORS_FSCHMD)	+= fschmd.o
 obj-$(CONFIG_SENSORS_G760A)	+= g760a.o
 obj-$(CONFIG_SENSORS_GL518SM)	+= gl518sm.o
 obj-$(CONFIG_SENSORS_GL520SM)	+= gl520sm.o
+obj-$(CONFIG_SENSORS_GPIO_FAN)	+= gpio-fan.o
 obj-$(CONFIG_SENSORS_ULTRA45)	+= ultra45_env.o
 obj-$(CONFIG_SENSORS_I5K_AMB)	+= i5k_amb.o
 obj-$(CONFIG_SENSORS_IBMAEM)	+= ibmaem.o