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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2020-04-15 11:29:14 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2020-04-27 21:17:24 +0200 |
| commit | 2ecf39baba92bbe729f777ac27d9ebad3a17f65f (patch) | |
| tree | 7e5ab47e04b8c4c97eab2c59ae9f5cb764c80cf4 /drivers/mci/sdhci.c | |
| parent | ef7544a30304cf8cde50699b8bc2f40d10500bb1 (diff) | |
| download | barebox-2ecf39baba92bbe729f777ac27d9ebad3a17f65f.tar.gz barebox-2ecf39baba92bbe729f777ac27d9ebad3a17f65f.tar.xz | |
mci: sdhci: implement sdhci_reset()
SDHCI reset is common between many SDHCI variants. Add a library
function, so it can be reused.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/mci/sdhci.c')
| -rw-r--r-- | drivers/mci/sdhci.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/mci/sdhci.c b/drivers/mci/sdhci.c index 172c8343a1..dba26b2665 100644 --- a/drivers/mci/sdhci.c +++ b/drivers/mci/sdhci.c @@ -138,3 +138,14 @@ int sdhci_transfer_data(struct sdhci *sdhci, struct mci_data *data) return 0; } + +int sdhci_reset(struct sdhci *sdhci, u8 mask) +{ + u8 val; + + sdhci_write8(sdhci, SDHCI_SOFTWARE_RESET, mask); + + return sdhci_read8_poll_timeout(sdhci, SDHCI_SOFTWARE_RESET, + val, !(val & mask), + 100 * USEC_PER_MSEC); +} |