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i2c: adds support for i2c bus on Freescale CPM1/CPM2 controllers

PATCH New Jochen Friedrich 1 participant 1 message May 10, 2008

Subsystems (2)
I2C subsystem host drivers Freescale I2C cpm driver
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Jochen Friedrich

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PATCH 1/1 i2c: adds support for i2c bus on Freescale CPM1/CPM2 controllers

This driver uses the port of 2.4 code from Vitaly Bordug <[email protected]> and the actual algorithm used by the i2c driver of the DBox code on cvs.tuxboc.org from Felix Domke ([email protected]) and Gillem ([email protected]) converted to an of_platform_driver. Tested on CPM1 (MPC823 on dbox2 hardware) and CPM2 (MPC8272).

Signed-off-by Jochen Friedrich <[email protected]>
---
 drivers/i2c/busses/Kconfig   |   10 +
 drivers/i2c/busses/Makefile  |    1 +
 drivers/i2c/busses/i2c-cpm.c |  728 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 739 insertions(+), 0 deletions(-)
 create mode 100644 drivers/i2c/busses/i2c-cpm.c
drivers/i2c/busses/Kconfig +10 -0
index 48438cc..c627b94 100644
@@ -117,6 +117,16 @@ config I2C_BLACKFIN_TWI_CLK_KHZ
 	help
 	  The unit of the TWI clock is kHz.
 
+config I2C_CPM
+	tristate "Freescale CPM1 or CPM2 (MPC8xx/826x)"
+	depends on (CPM1 || CPM2) && OF_I2C
+	help
+	  This supports the use of the I2C interface on Freescale
+	  processors with CPM1 or CPM2.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called i2c-cpm.
+
 config I2C_DAVINCI
 	tristate "DaVinci I2C driver"
 	depends on ARCH_DAVINCI
drivers/i2c/busses/Makefile +1 -0
index e8c882a..1ccd5ba 100644
@@ -11,6 +11,7 @@ obj-$(CONFIG_I2C_AMD8111)	+= i2c-amd8111.o
 obj-$(CONFIG_I2C_AT91)		+= i2c-at91.o
 obj-$(CONFIG_I2C_AU1550)	+= i2c-au1550.o
 obj-$(CONFIG_I2C_BLACKFIN_TWI)	+= i2c-bfin-twi.o
+obj-$(CONFIG_I2C_CPM)		+= i2c-cpm.o
 obj-$(CONFIG_I2C_DAVINCI)	+= i2c-davinci.o
 obj-$(CONFIG_I2C_ELEKTOR)	+= i2c-elektor.o
 obj-$(CONFIG_I2C_GPIO)		+= i2c-gpio.o
drivers/i2c/busses/i2c-cpm.c new file +728 -0

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1.5.5.1