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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2023-08-03 12:49:55 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2023-11-06 08:43:42 +0100 |
| commit | 3ad695e291b7b9c9c7b5ac5f0d80be7b8d930cde (patch) | |
| tree | c03b89caca2626d41468fbf00b3c561885f8369c /drivers/mci/sdhci.c | |
| parent | 7bf6d259effb5d9fe974be30b503a9808bea8160 (diff) | |
| download | barebox-3ad695e291b7b9c9c7b5ac5f0d80be7b8d930cde.tar.gz barebox-3ad695e291b7b9c9c7b5ac5f0d80be7b8d930cde.tar.xz | |
mci: sdhci: Add common wait for idle function
Waiting for the controller being idle is a common pattern in the
different SDHCI drivers we have. Add a common function for it.
Link: https://lore.barebox.org/20230803105003.4088205-15-s.hauer@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 | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/mci/sdhci.c b/drivers/mci/sdhci.c index 6ad11b8099..169324ab1d 100644 --- a/drivers/mci/sdhci.c +++ b/drivers/mci/sdhci.c @@ -537,6 +537,28 @@ void sdhci_enable_clk(struct sdhci *host, u16 clk) sdhci_write16(host, SDHCI_CLOCK_CONTROL, clk); } +int sdhci_wait_idle(struct sdhci *host, struct mci_cmd *cmd) +{ + u32 mask; + int ret; + + mask = SDHCI_CMD_INHIBIT_CMD | SDHCI_CMD_INHIBIT_DATA; + + if (cmd && cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION) + mask &= ~SDHCI_CMD_INHIBIT_DATA; + + ret = wait_on_timeout(10 * MSECOND, + !(sdhci_read32(host, SDHCI_PRESENT_STATE) & mask)); + + if (ret) { + dev_err(host->mci->hw_dev, + "SDHCI timeout while waiting for idle\n"); + return -EBUSY; + } + + return 0; +} + void sdhci_set_clock(struct sdhci *host, unsigned int clock, unsigned int input_clock) { u16 clk; |