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2019-06-20southbridge/intel/common/smbus: Add do_i2c_block_write()Frans Hendriks
Intel Braswell supports i2c block writes using SMBus controller. This support is missing in actual smbus routines. Add do_i2c_block_write() which is a based on do_smbus_block_write() but also write first byte to SMBHSTDAT1. The caller needs to configure the SMBus controller in i2c mode. In i2c mode SMBus controller will send the next sequence: SMBXINTADD, SMBHSTDAT1, SMBBLKDAT .. SMBBLKDAT To ensure the the command is send over the bus the SMBHSTCMD register must be written also BUG=N/A TEST=Config eDP for LCD display on Facebook FBG-1701 Change-Id: I40f8c0f5257a62398189f36892b8159052481693 Signed-off-by: Frans Hendriks <fhendriks@eltan.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/30800 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2019-02-01sb/intel/common: Rename i2c_block_read() to i2c_eeprom_read()Kyösti Mälkki
Datasheets describe the used command as 'I2C Read' but adding the word 'eeprom' in between should avoid further confusion with other block commands. Followups will add a symmetrical pair of commands i2c_block_read() and i2c_block_write() that operate via I2C_EN bit and have a 32 byte size restriction on block transfers. For some hardware revision these block commands are available, while 'I2C Read' was not. Change-Id: I4494ab2985afc7f737ddacc8d706a5d5395e35cf Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/31151 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
2017-09-09sb/intel/common: Fix i2c block commandKyösti Mälkki
Coding style, sync implementation with SMBus counterpart. Change-Id: I75f24e2308de945fc03289636ae914bb87070838 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/21116 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
2017-09-09sb/intel/common: Tidy up SMBus block commandsKyösti Mälkki
I forgot to push these changes before merging commit 1b04aa2 sb/intel/common: Fix SMBus block commands Change-Id: I7217f8c0cc78f2161faf31a4c49e3e9515026d15 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/21115 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2017-08-06sb/intel/*: Use common SMBus functionsArthur Heymans
All Intel southbridges implement the same SMBus functions. This patch replaces all these similar and mostly identical implementations with a common file. This also makes i2c block read available to all those southbridges. If the northbridge has to read a lot of SPD bytes sequentially, using this function can reduce the time being spent to read SPD five-fold. Change-Id: I93bb186e04e8c32dff04fc1abe4b5ecbc4c9c962 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/19258 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>