linux-kernel - Re: [PATCH v2 2/3] i2c: xilinx: Set tx direction in write operation

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Message-ID: <20131004054636.GC3194@katana>
Date:	Fri, 4 Oct 2013 07:46:37 +0200
From:	Wolfram Sang <wsa@...-dreams.de>
To:	Michal Simek <michal.simek@...inx.com>
Cc:	linux-kernel@...r.kernel.org, monstr@...str.eu,
	Kedareswara rao Appana <appana.durga.rao@...inx.com>,
	Kedareswara rao Appana <appanad@...inx.com>,
	Jean Delvare <khali@...ux-fr.org>,
	Peter Korsgaard <jacmet@...site.dk>, linux-i2c@...r.kernel.org
Subject: Re: [PATCH v2 2/3] i2c: xilinx: Set tx direction in write operation


> +	cr = xiic_getreg32(i2c, XIIC_CR_REG_OFFSET);
> +	cr |= XIIC_CR_DIR_IS_TX_MASK;
> +	xiic_setreg32(i2c, XIIC_CR_REG_OFFSET, cr);
> +

Is there no need to clear the bit again when receiving? And did
transferring ever work if this bit was never set before?


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