diff options
| author | Ludovic Barre <ludovic.barre@st.com> | 2018-10-08 15:08:49 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2018-10-09 10:13:04 +0300 |
| commit | b79220b3e0af5037b2ae90a5d2c32bc1a1e627fb (patch) | |
| tree | edb3d648868d3841cce4aa4ffd4988f246c30453 /drivers/mmc/host/mmci.h | |
| parent | d2141547f594d396f85010ba0b37d0e9491943b6 (diff) | |
| download | linux-b79220b3e0af5037b2ae90a5d2c32bc1a1e627fb.tar.xz | |
mmc: mmci: add variant property to not read datacnt
This patch adds a boolean property to not read datacnt register.
Needed to support the STM32 sdmmc variant. MMCIDATACNT
register should be read only after the data transfer is completed.
When reading after an error event the read data count value may be
different from the real number of data bytes transferred.
Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/mmci.h')
| -rw-r--r-- | drivers/mmc/host/mmci.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h index eef7dd5be01d..cdcadd29a10d 100644 --- a/drivers/mmc/host/mmci.h +++ b/drivers/mmc/host/mmci.h @@ -224,6 +224,8 @@ struct mmci_host; * @datactrl_blksz: block size in power of two * @datactrl_dpsm_enable: enable value for DPSM * @datactrl_first: true if data must be setup before send command + * @datacnt_useless: true if you could not use datacnt register to read + * remaining data * @pwrreg_powerup: power up value for MMCIPOWER register * @f_max: maximum clk frequency supported by the controller. * @signal_direction: input/out direction of bus signals can be indicated @@ -264,6 +266,7 @@ struct variant_data { unsigned int datactrl_blocksz; unsigned int datactrl_dpsm_enable; u8 datactrl_first:1; + u8 datacnt_useless:1; u8 st_sdio:1; u8 st_clkdiv:1; u8 blksz_datactrl16:1; |