[PATCH V5 0/3] mmc: mmci: add busy detect for stm32 sdmmc variant

[Ludovic Barre]

From: Ludovic Barre <ludovic.barre@xxxxxx>

This patch series adds busy detect for stm32 sdmmc variant.
Some adaptations are required:
-On sdmmc the data timer is started on data transfert
and busy state, so we must add hardware busy timeout support.
-Add busy_complete callback at mmci_host_ops to allow to define
a specific busy completion by variant.
-Add sdmmc busy_complete calback.

V5:
-Replaces !cmd->data to !host->mrq->data to avoid overwrite
 of datatimer register by the first command (cmd23, without data) of
 SBC request.

V4:
-Re-work with busy_complete callback
-In series, move "mmc: mmci: add hardware busy timeout feature" in
first to simplify busy_complete prototype with err_msk parameter.

V3:
-rebase on latest mmc next
-replace re-read by status parameter. 

V2:
-mmci_cmd_irq cleanup in separate patch.
-simplify the busy_detect_flag exclude
-replace sdmmc specific comment in
"mmc: mmci: avoid fake busy polling in mmci_irq"
to focus on common behavior

Ludovic Barre (3):
  mmc: mmci: add hardware busy timeout feature
  mmc: mmci: add busy_complete callback
  mmc: mmci: sdmmc: add busy_complete callback

 drivers/mmc/host/mmci.c             | 178 +++++++++++++++++-----------
 drivers/mmc/host/mmci.h             |   7 +-
 drivers/mmc/host/mmci_stm32_sdmmc.c |  38 ++++++
 3 files changed, 151 insertions(+), 72 deletions(-)

-- 
2.17.1