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mmc: core: Separate out the mmc_switch status check so it can be re-used

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Make a separate function to do the mmc_switch status check
so it can be re-used. This is preparation for adding support
for HS400 re-tuning.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Adrian Hunter 2015-05-07 13:10:19 +03:00 committed by Ulf Hansson
parent 436f8daa6f
commit ed16f58dc0
2 changed files with 17 additions and 14 deletions
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30
drivers/mmc/core/mmc_ops.c
View File

@ -450,6 +450,21 @@ int mmc_spi_set_crc(struct mmc_host *host, int use_crc)
return err;
}
int mmc_switch_status_error(struct mmc_host *host, u32 status)
{
if (mmc_host_is_spi(host)) {
if (status & R1_SPI_ILLEGAL_COMMAND)
return -EBADMSG;
} else {
if (status & 0xFDFFA000)
pr_warn("%s: unexpected status %#x after switch\n",
mmc_hostname(host), status);
if (status & R1_SWITCH_ERROR)
return -EBADMSG;
}
return 0;
}
/**
* __mmc_switch - modify EXT_CSD register
* @card: the MMC card associated with the data transfer
@ -558,20 +573,7 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
}
} while (R1_CURRENT_STATE(status) == R1_STATE_PRG);
if (mmc_host_is_spi(host)) {
if (status & R1_SPI_ILLEGAL_COMMAND) {
err = -EBADMSG;
goto out;
}
} else {
if (status & 0xFDFFA000)
pr_warn("%s: unexpected status %#x after switch\n",
mmc_hostname(host), status);
if (status & R1_SWITCH_ERROR) {
err = -EBADMSG;
goto out;
}
}
err = mmc_switch_status_error(host, status);
out:
mmc_retune_release(host);

1
drivers/mmc/core/mmc_ops.h
View File

@ -27,6 +27,7 @@ int mmc_spi_set_crc(struct mmc_host *host, int use_crc);
int mmc_bus_test(struct mmc_card *card, u8 bus_width);
int mmc_send_hpi_cmd(struct mmc_card *card, u32 *status);
int mmc_can_ext_csd(struct mmc_card *card);
int mmc_switch_status_error(struct mmc_host *host, u32 status);
#endif