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| author | Ulf Hansson <ulf.hansson@linaro.org> | 2020-02-04 11:54:47 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2020-03-24 16:35:40 +0300 |
| commit | 490ff95f8e2c89d7541f187bae78d340b20d0ef0 (patch) | |
| tree | a967edb18f3d0aab43101892b8f71dd887064d69 /drivers/mmc/core/mmc_ops.h | |
| parent | 9f94d04752ad6bf6a704637c61590fe55c4c0d82 (diff) | |
| download | linux-490ff95f8e2c89d7541f187bae78d340b20d0ef0.tar.xz | |
mmc: core: Convert to mmc_poll_for_busy() for HPI commands
Rather than open coding the polling loop in mmc_interrupt_hpi(), let's
convert to use mmc_poll_for_busy().
Note that, moving to mmc_poll_for_busy() for HPI also improves the
behaviour according to below.
- Adds support for polling via the optional ->card_busy() host ops.
- Require R1_READY_FOR_DATA to be set in the CMD13 response before exiting
the polling loop.
- Adds a throttling mechanism to avoid CPU hogging when polling.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Baolin Wang <baolin.wang7@gmail.com>
Tested-by: Ludovic Barre <ludovic.barre@st.com>
Reviewed-by: Ludovic Barre <ludovic.barre@st.com>
Link: https://lore.kernel.org/r/20200204085449.32585-11-ulf.hansson@linaro.org
Diffstat (limited to 'drivers/mmc/core/mmc_ops.h')
| -rw-r--r-- | drivers/mmc/core/mmc_ops.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mmc/core/mmc_ops.h b/drivers/mmc/core/mmc_ops.h index 8cd05fb583da..38dcfeeaf6d5 100644 --- a/drivers/mmc/core/mmc_ops.h +++ b/drivers/mmc/core/mmc_ops.h @@ -13,6 +13,7 @@ enum mmc_busy_cmd { MMC_BUSY_CMD6, MMC_BUSY_ERASE, + MMC_BUSY_HPI, }; struct mmc_host; |