mmc: sdhci: cache timing information locally

Rather than reading back the timing information from the registers,
cache it locally.  This allows implementations to translate the UHS
timing by overriding the set_uhs_signaling() method as required
without also having to emulate the SDHCI_HOST_CONTROL2 register.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Markus Pargmann <mpa@pengutronix.de>
Tested-by: Stephen Warren <swarren@nvidia.com>
[Ulf Hansson] Resolved conflict
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h
index 72a90baf111f..7f3efbab8732 100644
--- a/include/linux/mmc/sdhci.h
+++ b/include/linux/mmc/sdhci.h
@@ -172,6 +172,8 @@ struct sdhci_host {
         unsigned int            ocr_avail_mmc;
         u32 ocr_mask;           /* available voltages */
 
+        unsigned                timing;         /* Current timing */
+
         u32                     thread_isr;
 
         /* cached registers */