Wolfram Sang <w...@the-dreams.de> writes:

> On Sat, Oct 31, 2015 at 05:35:57PM +0000, Mans Rullgard wrote:
>> This adds a driver for the Sigma Designs SMP8642 built-in I2C master
>> controller.  The hardware is very similar to the I2C controller in the
>> Ralink RT3050 chip with the addition of interrupt generation and an
>> inverted busy/idle status bit.  There are typically two controllers with
>> a shared IRQ.
>> Signed-off-by: Mans Rullgard <m...@mansr.com>
> Thanks for the driver. Same answer as here, though:
> http://www.spinics.net/lists/linux-i2c/msg17001.html
>> +#define TANGOX_I2C_CONFIG           0x00
>> +#define TANGOX_I2C_CLKDIV           0x04
>> +#define TANGOX_I2C_DEVADDR          0x08
>> +#define TANGOX_I2C_ADDR                     0x0c
>> +#define TANGOX_I2C_DATAOUT          0x10
>> +#define TANGOX_I2C_DATAIN           0x14
>> +#define TANGOX_I2C_STATUS           0x18
>> +#define TANGOX_I2C_STARTXFER                0x1c
>> +#define TANGOX_I2C_BYTECNT          0x20
>> +#define TANGOX_I2C_INT_EN           0x24
>> +#define TANGOX_I2C_INT_STAT         0x28
> The register set looks like the one from i2c-xlr.c, only that they are
> 32 bit apart instead of 8. Can you check if you can reuse that driver?

It does look very similar indeed.  I thought I'd checked for an existing
driver, but apparently I missed that one.  I'll modify the xlr driver to
handle this hardware as well instead.

Måns Rullgård
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