Re: Driver-Support of I2C_M_RECV_LEN
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 signature.asc Description: Digital signature
Re: Driver-Support of I2C_M_RECV_LEN
Hello together, Am 20.06.14 14:03, schrieb Michael Post: > Hello, > > in the documentation i found at > http://ww2.cs.fsu.edu/~rosentha/linux/2.6.26.5/docs/DocBook/kernel-api/re1222.html > the following sentence: > > "Note that using this function requires that the client's adapter > support the I2C_FUNC_SMBUS_READ_BLOCK_DATA functionality. Not all > adapter drivers support this; its emulation through I2C messaging relies > on a specific mechanism (I2C_M_RECV_LEN) which may not be implemented." > > The second sentence says that the mechanism I2C_M_RECV_LEN is not all > over implemented. > > How i can figure out whether this mechanism will be provided of my driver? > What is the alternative of using the function i2c_smbus_read_block_data? does nobody has any clue or hints for me? Maybe there is an other mailinglist i can ask? Thanks a lot, Michael -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Driver-Support of I2C_M_RECV_LEN
-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 Hello together, Am 20.06.14 14:03, schrieb Michael Post: > Hello, > > in the documentation i found at > http://ww2.cs.fsu.edu/~rosentha/linux/2.6.26.5/docs/DocBook/kernel-api/re1222.html > > the following sentence: > > "Note that using this function requires that the client's adapter > support the I2C_FUNC_SMBUS_READ_BLOCK_DATA functionality. Not all > adapter drivers support this; its emulation through I2C messaging > relies on a specific mechanism (I2C_M_RECV_LEN) which may not be > implemented." > > The second sentence says that the mechanism I2C_M_RECV_LEN is not > all over implemented. > > How i can figure out whether this mechanism will be provided of my > driver? What is the alternative of using the function > i2c_smbus_read_block_data? > does nobody has any clue or hints for me? Maybe there is an other mailinglist i can ask? Thanks a lot, Michael -BEGIN PGP SIGNATURE- Version: GnuPG/MacGPG2 v2.0.22 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBCgAGBQJTtln2AAoJEFF6fE6T32A87NkH/3f2pslue7/oYiIiZ8PlKway C9hOI02EEX0Z+sxB31ZTMyis2VxGFmZ3VGp4sSpiPv2iK9huMYmeVV0a2a+J0MLg wmObCFRUZVN85lLqau+nEuqNMHSVYpYedHovC3Ui3rTHZNDM3pWJSDBy5dFG57d2 TE6Jae6Q31/hRn8gq106XmRdtYgKmzCfmfjRwYyBt0tYH2vQ43xhJQ3zGZCuKJ5O xjY4em5jLWv+oiWi/HAkXFqfC4GskklBcn77K9TDEuw+oXkeF8Re4JPmvOBKxrQA O+a246FVyyrKHs7VKXXAORX+Ty/q2QtP+dbFk9M0Uo0M0Xi17QhJ8TsUwQViFV4= =gIOJ -END PGP SIGNATURE- -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
