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:


> +#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?



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