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| author | Ulf Hansson <ulf.hansson@linaro.org> | 2019-01-29 17:35:56 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2019-02-25 10:40:58 +0300 |
| commit | e9968c6fa8e7852184135e84116c6c77ebb2987d (patch) | |
| tree | 7395705d6e606227311214b39f4afaf82026b4cc /drivers/mmc/host/mmci.h | |
| parent | e9d6a371cff3bb9bef8ad96fe576d62346c7e104 (diff) | |
| download | linux-e9968c6fa8e7852184135e84116c6c77ebb2987d.tar.xz | |
mmc: mmci: Send a CMD12 to clear the DPSM at errors
The current approach with sending a CMD12 (STOP_TRANSMISSION) to complete a
data transfer request, either because of using the open-ended transmission
type or because of receiving an error during a pre-defined data transfer,
isn't sufficient for the STM32 sdmmc variant. More precisely, this variant
needs to clear the DPSM ("Data Path State Machine") by sending a CMD12, for
all failing ADTC commands.
Support this, by adding a struct mmc_command inside the struct mmci_host
and initialize it to a CMD12 during ->probe(). Let's also add checks for
the new conditions, to enable mmci_data_irq() and mmci_cmd_irq() to
postpone the calls to mmci_request_end(), but instead send the CMD12.
Cc: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Ludovic Barre <ludovic.barre@st.com>
Diffstat (limited to 'drivers/mmc/host/mmci.h')
| -rw-r--r-- | drivers/mmc/host/mmci.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h index 24229097d05c..14df81054438 100644 --- a/drivers/mmc/host/mmci.h +++ b/drivers/mmc/host/mmci.h @@ -377,6 +377,7 @@ struct mmci_host { void __iomem *base; struct mmc_request *mrq; struct mmc_command *cmd; + struct mmc_command stop_abort; struct mmc_data *data; struct mmc_host *mmc; struct clk *clk; |