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[0/3] mmc: host: Disable auto-cmd12 during ffu

Message ID 20231012184041.1837455-1-avri.altman@wdc.com
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Series mmc: host: Disable auto-cmd12 during ffu | expand

Message

Avri Altman Oct. 12, 2023, 6:40 p.m. UTC 
Field Firmware Update (ffu) may use close-ended or open ended sequence.
Each such sequence is comprised of a write commands enclosed between 2
switch commands - to and from ffu mode.

Some platforms generate auto command error interrupt when it shouldn't,
e.g. auto-cmd12 while in close-ended ffu sequence.  Therefore, add a
quirk that disable auto-cmd12 while close-ended ffu is in progress.

I encounterd this issue while testing fwupd (github.com/fwupd/fwupd) on
HP Chromebook x2, a qualcomm based QC-7c, code name - strongbad.

Avri Altman (3):
  mmc: host: Quirk - Disable auto-cmd12 during ffu
  mmc: core: Mark close-ended ffu in progress
  mmc: host: sdhci-msm: Apply SDHCI_QUIRK2_FFU_ACMD12

 drivers/mmc/core/block.c     | 25 +++++++++++++++++++++++++
 drivers/mmc/host/sdhci-msm.c |  3 ++-
 drivers/mmc/host/sdhci.c     |  8 +++++++-
 drivers/mmc/host/sdhci.h     |  2 ++
 include/linux/mmc/core.h     |  3 +++
 include/linux/mmc/mmc.h      |  1 +
 6 files changed, 40 insertions(+), 2 deletions(-)