[RFC] i2c-designware patches

[baruch@tkos.co.il (Baruch Siach)]

Hi Shinya,

On Tue, Oct 13, 2009 at 11:44:04AM +0900, Shinya Kuribayashi wrote:
> Here're various improvements / bug-fixing patches for DW I2C driver.
> I'm working with v2.6.27-based kernel, but they must work fine with the
> latest mainline kernel.
> 
> It's stil in RFC, and I'm working with it for some time.  Any comments
> or suggestions are highly appreciated.  Then I'll respin and give it a
> test, thanks.
> 
> Baruch, I'd say the base driver is in good shape enogh, so I'm having
> a fun with modifing the driver.  Thanks for the initial work.

Thanks. It is good to see that my work is actually useful for someone. I'll go 
over this series in the coming days. Unfortunately I don't have the hardware 
for testing anymore, but I'll try at least to compile test these patches.

By the way, what is the chip you work with?

baruch

> P.S. ARM and MIPS lists are Cc:ed as I believe there must be potential
> users of this driver.
> 
> 
> Shinya Kuribayashi (16):
>      i2c-designware: Consolidate to use 32-bit word accesses
>      i2c-designware: Don't use the IC_CLR_INTR register to clear interrupts
>      i2c-designware: Use platform_get_irq helper
>      i2c-designware: i2c_dw_read: Take "struct dw_i2c_dev" pointer
>      i2c-designware: i2c_dw_xfer_msg: Take "struct dw_i2c_dev" pointer
>      i2c-designware: Remove an useless local variable "num"
>      i2c-designware: Set a clock name to DesignWare I2C clock source
>      i2c-designware: Improve _HCNT/_LCNT calculation
>      i2c-designware: i2c_dw_xfer_msg: Fix an i2c_msg search bug
>      i2c-designware: Do dw_i2c_pump_msg's jobs in the interrutp handler
>      i2c-designware: Set Tx/Rx FIFO threshold levels
>      i2c-designware: Divide i2c_dw_xfer_msg into two functions
>      i2c-designware: i2c_dw_xfer_msg: Introduce a local "buf" pointer
>      i2c-designware: Deferred FIFO-data-counting variables initialization
>      i2c-designware: i2c_dw_xfer_msg: Mark as completed on an error
>      i2c-designware: Add I2C_FUNC_SMBUS_* bits
> 
> drivers/i2c/busses/i2c-designware.c |  367 +++++++++++++++++++++++++----------
> 1 files changed, 264 insertions(+), 103 deletions(-)
> 
> -- 
> Shinya Kuribayashi
> NEC Electronics

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