mmc: sdhci: Introduce new flag SDHCI_USING_RETUNING_TIMER

Add a new flag of SDHCI_USING_RETUNING_TIMER to represent if the host
is using a retuning timer for the card inserted.

This flag is set when the host does tuning the first time for the card
and the host's retuning mode is 1. This flag is used afterwards whenever
needs to decide if the host is currently using a retuning timer.

This flag is cleared when the card is removed in sdhci_reinit.

The set/clear of the flag and the start/stop of the retuning timer is
associated with the card's init/remove time, so there is no need to
touch it when the host is to be removed as at that time the card should
have already been removed.

Signed-off-by: Aaron Lu <aaron.lu@amd.com>
Reviewed-by: Girish K S <girish.shivananjappa@linaro.org>
Reviewed-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h
index d989b511c9ab..ac83b105bedd 100644
--- a/include/linux/mmc/sdhci.h
+++ b/include/linux/mmc/sdhci.h
@@ -122,6 +122,7 @@ struct sdhci_host {
 #define SDHCI_PV_ENABLED        (1<<8)  /* Preset value enabled */
 #define SDHCI_SDIO_IRQ_ENABLED  (1<<9)  /* SDIO irq enabled */
 #define SDHCI_HS200_NEEDS_TUNING (1<<10)        /* HS200 needs tuning */
+#define SDHCI_USING_RETUNING_TIMER (1<<11)      /* Host is using a retuning timer for the card */
 
         unsigned int version;   /* SDHCI spec. version */