On Fri, May 29, 2015 at 03:50:09PM +0200, Cyrille Pitchen wrote:
> The probe() function now prints the hardware version of the I2C controller
>
> Signed-off-by: Cyrille Pitchen <[email protected]>
Acked-by: Ludovic Desroches <[email protected]>
> ---
> drivers/i2c/busses/i2c-at91.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c
> index b48be58..1549b29 100644
> --- a/drivers/i2c/busses/i2c-at91.c
> +++ b/drivers/i2c/busses/i2c-at91.c
> @@ -85,6 +85,8 @@
> #define AT91_TWI_ACR_DATAL(len) ((len) & 0xff)
> #define AT91_TWI_ACR_DIR (1 << 8)
>
> +#define AT91_TWI_VER 0x00fc /* Version Register */
> +
> struct at91_twi_pdata {
> unsigned clk_max_div;
> unsigned clk_offset;
> @@ -867,6 +869,8 @@ static int at91_twi_probe(struct platform_device *pdev)
> return rc;
> }
>
> + dev_info(dev->dev, "version: 0x%x\n", at91_twi_read(dev, AT91_TWI_VER));
> +
> rc = of_property_read_u32(dev->dev->of_node, "clock-frequency",
> &bus_clk_rate);
> if (rc)
> --
> 1.8.2.2
>