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Message-ID: <20100114143947.GA4564@farnsworth.org> Date: Thu, 14 Jan 2010 07:39:47 -0700 From: Dale Farnsworth <dale@...nsworth.org> To: Paul Mundt <lethal@...ux-sh.org> Cc: Alessandro Zummo <a.zummo@...ertech.it>, rtc-linux@...glegroups.com, linux-kernel@...r.kernel.org Subject: Re: [PATCH] rtc: rtc-max6900: SMBus support. On Thu, Jan 14, 2010 at 08:32:35PM +0900, Paul Mundt wrote: > The current rtc-max6900 driver only supports getting and setting the time > through bursting, which requires a controller capable of such. As > bursting is merely an optimization, we can also opt for the non-burst > fallback path that pokes at the date/time registers individually. > > By opting for the fallback solution, it's possible to fully support the > RTC on controllers that only implement I2C_FUNC_SMBUS_BYTE_DATA instead > of requiring master transfers via I2C_FUNC_I2C. > > This was tested with an I2C_FUNC_SMBUS_BYTE_DATA controller with a MAX6909 > attached. Currently only a subset of the MAX6909 functionality is supported, > patches to extend the current driver to be forthcoming. > > There are no functional changes for I2C_FUNC_I2C controllers. > > Signed-off-by: Paul Mundt <lethal@...ux-sh.org> Acked-by: Dale Farnsworth <dale@...nsworth.org> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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