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add support for more i2c muxes

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This patch should bring support for several kernel modules related to
I2C to openwrt, which are existing for several years now. Namely there
is the i2c-tiny-usb bus driver, to hook up an I2C bus on any device with
usb support (prevent voiding warranty when opening and soldering).
Second, there is support for the i2c-mux driver and pca954x as a I2C
switch driver.
Finally there is support for common I2C gpio expander driver modules
pca953x and pcf857x. They work without providing platform data recently
(can be instantiated at runtime).

Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>

SVN-Revision: 28334
This commit is contained in:
Florian Fainelli 2011-09-30 12:55:26 +00:00
parent ddf842d573
commit d53022a424
1 changed files with 92 additions and 0 deletions
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92
package/kernel/modules/i2c.mk
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@ -213,4 +213,96 @@ define KernelPackage/octeon-i2c/description
Kernel module to use the I2C master driver on Cavium Octeon
endef
I2C_TINY_USB_MODULES:= \
CONFIG_I2C_TINY_USB:drivers/i2c/busses/i2c-tiny-usb
define KernelPackage/i2c-tiny-usb
$(call i2c_defaults,$(I2C_TINY_USB_MODULES),59)
TITLE:=I2C Tiny USB adaptor
DEPENDS:=@USB_SUPPORT kmod-i2c-core
endef
define KernelPackage/i2c-tiny-usb/description
Kernel module for the I2C Tiny USB adaptor developed
by Till Harbaum (http://www.harbaum.org/till/i2c_tiny_usb).
endef
$(eval $(call KernelPackage,i2c-tiny-usb))
I2C_MUX_MODULES:= \
CONFIG_I2C_MUX:drivers/i2c/i2c-mux
define KernelPackage/i2c-mux
$(call i2c_defaults,$(I2C_MUX_MODULES),51)
TITLE:=I2C bus multiplexing support
DEPENDS:=kmod-i2c-core
endef
define KernelPackage/i2c-mux/description
Kernel modules for I2C bus multiplexing support.
endef
$(eval $(call KernelPackage,i2c-mux))
I2C_MUX_PCA954x_MODULES:= \
CONFIG_I2C_MUX_PCA954x:drivers/i2c/muxes/pca954x
define KernelPackage/i2c-mux-pca954x
$(call i2c_defaults,$(I2C_MUX_PCA954x_MODULES),51)
TITLE:=Philips PCA954x I2C mux/switches
DEPENDS:=kmod-i2c-mux
endef
define KernelPackage/i2c-mux-pca954x/description
Kernel modules for PCA954x I2C bus mux/switching devices.
endef
$(eval $(call KernelPackage,i2c-mux-pca954x))
## Support for pca954x seems to be in kernel since 2.6.36
I2C_MUX_PCA9541_MODULES:= \
CONFIG_I2C_MUX_PCA9541:drivers/i2c/muxes/pca9541
define KernelPackage/i2c-mux-pca9541
$(call i2c_defaults,$(I2C_MUX_PCA9541_MODULES),51)
TITLE:=Philips PCA9541 I2C mux/switches
DEPENDS:=kmod-i2c-mux
endef
define KernelPackage/i2c-mux-pca9541/description
Kernel modules for PCA9541 I2C bus mux/switching devices.
endef
$(eval $(call KernelPackage,i2c-mux-pca9541))
GPIO_PCA953X_MODULES:= \
CONFIG_GPIO_PCA953X:drivers/gpio/pca953x
define KernelPackage/pca953x
$(call i2c_defaults,$(GPIO_PCA953X_MODULES),51)
TITLE:=Philips PCA953x I2C GPIO extenders
DEPENDS:=kmod-i2c-core
endef
define KernelPackage/pca953x/description
Kernel modules for PCA953x I2C GPIO extenders.
endef
$(eval $(call KernelPackage,pca953x))
GPIO_PCF857X_MODULES:= \
CONFIG_GPIO_PCF857X:drivers/gpio/pcf857x
define KernelPackage/pcf857x
$(call i2c_defaults,$(GPIO_PCF857X_MODULES),51)
TITLE:=Philips PCF857x I2C GPIO extenders
DEPENDS:=kmod-i2c-core
endef
define KernelPackage/pcf857x/description
Kernel modules for PCF857x I2C GPIO extenders.
endef
$(eval $(call KernelPackage,pcf857x))
$(eval $(call KernelPackage,octeon-i2c))