[PATCH v3 4/6] i2c: npcm: Modify the client address assignment

Andy Shevchenko andriy.shevchenko at linux.intel.com
Fri Sep 13 20:32:58 AEST 2024


On Fri, Sep 13, 2024 at 06:14:44PM +0800, warp5tw at gmail.com wrote:
> From: Tyrone Ting <kfting at nuvoton.com>
> 
> Store the client address earlier since it might get called in
> the i2c_recover_bus logic flow at the early stage of the function
> npcm_i2c_master_xfer.

We refer to the functions as func().

...

> +	/*
> +	 * Previously, the address was stored w/o left-shift by one bit and
> +	 * with that shift in the following call to npcm_i2c_master_start_xmit.
> +	 *
> +	 * Since there are cases that the i2c_recover_bus gets called at the
> +	 * early stage of the function npcm_i2c_master_xfer, the address is

Ditto.

> +	 * stored with the shift and used in the i2c_recover_bus call.
> +	 *
> +	 * The address is stored from bit 1 to bit 7 in the register for
> +	 * sending the i2c address later so it's left-shifted by 1 bit.
> +	 */


-- 
With Best Regards,
Andy Shevchenko




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