From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>
Subject: Re: Driver-Support of I2C_M_RECV_LEN
Date: Fri, 4 Jul 2014 09:58:50 +0200
Message-ID: <20140704075850.GA3492@katana>
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Hi,

> How i can figure out whether this mechanism will be provided of my driver?

Use i2c_get_functionality() and check for
I2C_FUNC_SMBUS_READ_BLOCK_DATA (or look at the source code).

> What is the alternative of using the function i2c_smbus_read_block_data?

That depends solely on your slave device. Check the documentation what
transfer types it supports and what alternatives are possible.

Regards,

   Wolfram

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