* i2c device does not support repeated start @ 2008-05-14 9:55 Darius 2008-05-14 10:25 ` Jean Delvare 0 siblings, 1 reply; 3+ messages in thread From: Darius @ 2008-05-14 9:55 UTC (permalink / raw) To: i2c-GZX6beZjE8VD60Wz+7aTrA If device does not support that, maybe there is some special flag, which device driver can pass to i2c_master_xfer? Darius. _______________________________________________ i2c mailing list i2c-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org http://lists.lm-sensors.org/mailman/listinfo/i2c ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: i2c device does not support repeated start 2008-05-14 9:55 i2c device does not support repeated start Darius @ 2008-05-14 10:25 ` Jean Delvare [not found] ` <20080514122528.75924c09-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org> 0 siblings, 1 reply; 3+ messages in thread From: Jean Delvare @ 2008-05-14 10:25 UTC (permalink / raw) To: Darius; +Cc: i2c-GZX6beZjE8VD60Wz+7aTrA Hi Darius, On Wed, 14 May 2008 12:55:09 +0300, Darius wrote: > If device does not support that, maybe there is some special flag, which > device driver can pass to i2c_master_xfer? No, there isn't. If a given I2C device doesn't support repeated start, then its driver should simply run only single-message transactions. That is, only use i2c_master_send() and i2c_master_recv(), or for SMBus compatibility, i2c_smbus_read_byte() and i2c_smbus_write_*(). -- Jean Delvare _______________________________________________ i2c mailing list i2c-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org http://lists.lm-sensors.org/mailman/listinfo/i2c ^ permalink raw reply [flat|nested] 3+ messages in thread
[parent not found: <20080514122528.75924c09-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>]
* Re: i2c device does not support repeated start [not found] ` <20080514122528.75924c09-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org> @ 2008-05-14 18:22 ` Trent Piepho 0 siblings, 0 replies; 3+ messages in thread From: Trent Piepho @ 2008-05-14 18:22 UTC (permalink / raw) To: Jean Delvare; +Cc: Darius, i2c-GZX6beZjE8VD60Wz+7aTrA On Wed, 14 May 2008, Jean Delvare wrote: > Hi Darius, > > On Wed, 14 May 2008 12:55:09 +0300, Darius wrote: > > If device does not support that, maybe there is some special flag, which > > device driver can pass to i2c_master_xfer? > > No, there isn't. If a given I2C device doesn't support repeated start, > then its driver should simply run only single-message transactions. > That is, only use i2c_master_send() and i2c_master_recv(), or for SMBus > compatibility, i2c_smbus_read_byte() and i2c_smbus_write_*(). There is also a flag, I2C_M_NOSTART, that can keep the repeated start from being sent. Though this is probably not what you want, as you probably want to insert a stop instead of remove the start. _______________________________________________ i2c mailing list i2c-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org http://lists.lm-sensors.org/mailman/listinfo/i2c ^ permalink raw reply [flat|nested] 3+ messages in thread
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2008-05-14 9:55 i2c device does not support repeated start Darius
2008-05-14 10:25 ` Jean Delvare
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2008-05-14 18:22 ` Trent Piepho
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