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linux-next/drivers/i2c
Nikolaus Voss fac368a040 i2c: at91: add new driver
This driver has the following properties compared to the old driver:
1. Support for multiple interfaces.
2. Interrupt driven I/O as opposed to polling/busy waiting.
3. Support for _one_ repeated start (Sr) condition, which is enough
   for most real-world applications including all SMBus transfer types.
   (The hardware does not support issuing arbitrary Sr conditions on the
    bus.)

testing: SoC: at91sam9g45
	 - BQ20Z80 battery SMBus client.
	 - on a 2.6.38 kernel with several i2c clients (temp-sensor,
	   audio-codec, touchscreen-controller, w1-bridge, io-expanders)

Signed-off-by: Nikolaus Voss <n.voss@weinmann.de>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Tested-by: Hubert Feurstein <h.feurstein@gmail.com>
Tested-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Reviewed-by: Nicolas Ferre <nicolas.ferre@atmel.com>

[wsa: squashed with the following patches from Ludovic to have some flaws
fixed:
        i2c: at91: use managed resources
        i2c: at91: add warning about transmission issues for some devices
        i2c: at91: use an id table for SoC dependent parameters
]

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-09-12 14:49:13 +02:00
..
algos i2c: Split I2C_M_NOSTART support out of I2C_FUNC_PROTOCOL_MANGLING 2012-05-30 10:55:34 +02:00
busses i2c: at91: add new driver 2012-09-12 14:49:13 +02:00
muxes i2c: Update Guenter Roeck's e-mail address 2012-07-24 14:13:56 +02:00
i2c-boardinfo.c i2c: Update the FSF address 2012-03-26 21:47:19 +02:00
i2c-core.c Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2012-07-30 19:03:41 -07:00
i2c-core.h i2c: Update the FSF address 2012-03-26 21:47:19 +02:00
i2c-dev.c i2c-dev: Add support for I2C_M_RECV_LEN 2012-05-30 10:55:34 +02:00
i2c-mux.c i2c/of: Automatically populate i2c mux busses from device tree data. 2012-05-12 14:28:16 +02:00
i2c-smbus.c i2c-smbus: Use module_i2c_driver() 2012-07-24 14:13:57 +02:00
Kconfig i2c: muxes are not EXPERIMENTAL anymore 2012-05-12 14:28:16 +02:00
Makefile i2c: Deprecate i2c_driver.attach_adapter and .detach_adapter 2011-03-20 14:50:53 +01:00