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mmc: sdhci: add __sdhci_execute_tuning() to header

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Expose __sdhci_execute_tuning() so that it can be called from the
mmc host controller drivers.

In the sdhci-of-dwcmshc driver, sdhci_dwcmshc_th1520_ops sets
platform_execute_tuning to th1520_execute_tuning(). That function has
to manipulate phy registers before tuning can be performed. To avoid
copying the code verbatim from __sdhci_execute_tuning() into
th1520_execute_tuning(), make it possible for __sdhci_execute_tuning()
to be called from sdhci-of-dwcmshc.

Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Drew Fustini <dfustini@baylibre.com>
Link: https://lore.kernel.org/r/20231109-th1520-mmc-v5-2-018bd039cf17@baylibre.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Drew Fustini 2023-11-09 21:41:12 -08:00 committed by Ulf Hansson
parent edee955389
commit 9cc811a342
2 changed files with 3 additions and 1 deletions
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3
drivers/mmc/host/sdhci.c
View File

@ -2841,7 +2841,7 @@ void sdhci_send_tuning(struct sdhci_host *host, u32 opcode)
}
EXPORT_SYMBOL_GPL(sdhci_send_tuning);
static int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode)
int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode)
{
int i;
@ -2879,6 +2879,7 @@ static int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode)
sdhci_reset_tuning(host);
return -EAGAIN;
}
EXPORT_SYMBOL_GPL(__sdhci_execute_tuning);
int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
{

1
drivers/mmc/host/sdhci.h
View File

@ -793,6 +793,7 @@ void sdhci_set_bus_width(struct sdhci_host *host, int width);
void sdhci_reset(struct sdhci_host *host, u8 mask);
void sdhci_set_uhs_signaling(struct sdhci_host *host, unsigned timing);
int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode);
int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode);
void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios);
int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
struct mmc_ios *ios);