summaryrefslogtreecommitdiff
path: root/src/southbridge/intel/common/smbus.c
AgeCommit message (Collapse)Author
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>
2019-05-29src/southbridge: Add missing 'include <types.h>'Elyes HAOUAS
<types.h> is supposed to provide <stdint.h> and <stddef.h>. When <types.h> is included, <stdint.h> and/or <stddef.h> is removed. Change-Id: I4d8628e4ce3c7f80da2590b4cad618b290e0d513 Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/32809 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>
2019-03-08coreboot: Replace all IS_ENABLED(CONFIG_XXX) with CONFIG(XXX)Julius Werner
This patch is a raw application of find src/ -type f | xargs sed -i -e 's/IS_ENABLED\s*(CONFIG_/CONFIG(/g' Change-Id: I6262d6d5c23cabe23c242b4f38d446b74fe16b88 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/31774 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2019-03-04sb/intel/common: Fix SMBus block commandsKyösti Mälkki
Fix regression after commit c38d543 sb/intel/common: SMBus complete_command() When evaluating HSTSTS register, BYTE_DONE bit must be excluded from transaction completion and error criteria. Change-Id: I49cc43d1fa58250988cc41b2ca747b9f1d7586d6 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/31622 Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Nico Huber <nico.h@gmx.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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>
2019-01-24sb/intel/common: More SMBus block_cmd_loop()Kyösti Mälkki
Setup to different block transactions are similar enough to have common place to call execute_command() in. Change-Id: I671fed280f47e6bc673eb7506f09ed6ed36d2804 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/26763 Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-01-24sb/intel/common: SMBus block_cmd_loop()Kyösti Mälkki
For debugging prints, report the number of loop spent polling instead. Change-Id: I61865aaafc9f41acd85c5dc98817d12642965ba4 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/21121 Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-01-24sb/intel/common: SMBus complete_command()Kyösti Mälkki
Adds helper to test for SMBHSTSTAT flags for hardware having finished or failed a transaction. Change-Id: Idea15e03edde7aeedf198c1529f09c24a5bc0b06 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/21120 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
2019-01-24sb/intel/common: SMBus execute_command()Kyösti Mälkki
Implement the common start of transaction. Fixes a problem where smbus_wait_until_active() can miss SMBHSTSTS_HOST_BUSY being set, if transaction completes very fast. Or if we are single-stepping or executing under SerialIce emulation. Change-Id: Icb27d7d6a1c54968950ca292dbae05415f97e461 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/21119 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
2019-01-24sb/intel/common: SMBus setup_command()Kyösti Mälkki
Implements the common parts of any SMBus transaction with a stub to log and recover (TBD) from timeout errors. Bits in SMBHSTCTL register are no longer preserved between transactions. Change-Id: I7ce14d3e895c30d595a94ce29ce0dc8cf51eb453 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/21118 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
2018-06-14src: Get rid of unneeded whitespaceElyes HAOUAS
Change-Id: I630d49ab504d9f6e052806b516a600fa41b9a8da Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/26991 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2017-09-27smbus: Fix a typo ("Set the device I'm talking too")Jonathan Neuschäfer
Change-Id: Ia14bbdfe973cec4b366879cd2ed5602b43754260 Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-on: https://review.coreboot.org/21653 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2017-09-10sb/intel/common: Fix HAVE_DEBUG_SMBUSKyösti Mälkki
Failed to build with DEBUG_SMBUS=y, slave_bytes is not initialized until inb(). Change-Id: Ia53717756ed74bc797a9529e36fc6965d6872101 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/21470 Reviewed-by: Nico Huber <nico.h@gmx.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2017-09-09sb/intel/common: Add HAVE_DEBUG_SMBUSKyösti Mälkki
Change-Id: Ifb1a1eff71968f31af9004ff00717f202d3ec29e Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/21117 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
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>
2017-08-20sb/intel/common: Fix SMBus block commandsArthur Heymans
Clear LAST_BYTE flag at beginning of block commands. For reads, slave device determines in the message format how many bytes it has to transfer out, host firmware only dictates the maximum buffer length. Return SMBUS_ERROR if only partial message was received. For writes, return SMBUS_ERROR if length > 32. For writes, fix off-by-one error reading memory one byte past the buffer end. Change-Id: If9e5d24255a0a03039b52d2863bc278d0eefc311 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/20879 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>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-27 06:32:11 +0000