<20091009083519.2659a79a@xxxxxxxxxxxxxxxx> Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Hi Jean=2C Thanks much for your response.=20 1) Thanks for correcting: ADM1066 as you mentioned does not require process= call. 2) From eeprom AT24C64 sheets: It support Sequential Random Read. After th= e micro controller receives a data word=2C it responds with an acknowledge.= As long as the EEPROM receives an acknowledge=2C it will continue to incre= ment the data word address and serially clock out sequential data words... = The sequential read operation is terminated when the micro controller does = not respond with a zero but does generate a following stop condition". The above seems to map to SMBUS Process Call Cycle with I2C_EN=3D1b. Pls suggest. Thanks=2C Krishna ---------------------------------------- > Date: Fri=2C 9 Oct 2009 08:35:19 +0200 > From: khali@xxxxxxxxxxxx > To: krishna_sunitha@xxxxxxxxxxx > CC: linux-i2c@xxxxxxxxxxxxxxx > Subject: Re: Looking for ICH SMBUS "Process call" support in i2c-i801 bus= driver > > Hi Krishna=2C > > On Thu=2C 8 Oct 2009 19:09:27 -0400=2C Krishna Kothapalli wrote: >> I have a couple of devices EEDPROM and Power Sequencer(ADM1066) that nee= d "Sequential Random Read" which has 2 byte address requirements. >> Currently Process call is not implemented in code drivers/i2c/busses/i2c= -i801.c. > > This is correct. Adding process call support to the i2c-i801 driver > would be easy=2C I even think some developers have done it already but > omitted to send the changes upstream. > > However=2C beware that SMBus process call is _not_ 2-byte addressing. It > is single-byte addressing=2C followed by two bytes from master to slave= =2C > followed by two bytes from slave to master. Are you certain you need > SMBus process call for the ADM1066? The datasheet doesn't mention it. > All the SMBus transactions mentioned in the ADM1066 datasheet are > already supported by the i2c-i801 driver. > >> Appreciate any suggestions for alternative implementations. > > Please make sure you know what your needs are=2C first. > > -- > Jean Delvare > http://khali.linux-fr.org/wishlist.html =0A= _________________________________________________________________=0A= Hotmail: Powerful Free email with security by Microsoft.=0A= http://clk.atdmt.com/GBL/go/171222986/direct/01/= -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
