mmc: sdhci: get voltage from sdhc host

We use host->ocr_mask to hold the voltage get from device-tree node, In case host->ocr_mask was available, we use host->ocr_mask as the final available voltage can be used by MMC/SD/SDIO card. Signed-off-by: Haijun Zhang <haijun.zhang@freescale.com> Reviewed-by: Anton Vorontsov <anton@enomsg.org> Signed-off-by: Chris Ball <cjb@laptop.org>
git-mirror · Aug 26, 2013 · c0b887b · c0b887b
1 parent 6e9e318
commit c0b887b
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diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
@@ -3119,6 +3119,9 @@ int sdhci_add_host(struct sdhci_host *host)
 				   SDHCI_MAX_CURRENT_MULTIPLIER;
 	}
 
+	if (host->ocr_mask)
+		ocr_avail = host->ocr_mask;
+
 	mmc->ocr_avail = ocr_avail;
 	mmc->ocr_avail_sdio = ocr_avail;
 	if (host->ocr_avail_sdio)

diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h
@@ -171,6 +171,7 @@ struct sdhci_host {
 	unsigned int            ocr_avail_sdio;	/* OCR bit masks */
 	unsigned int            ocr_avail_sd;
 	unsigned int            ocr_avail_mmc;
+	u32 ocr_mask;		/* available voltages */
 
 	wait_queue_head_t	buf_ready_int;	/* Waitqueue for Buffer Read Ready interrupt */
 	unsigned int		tuning_done;	/* Condition flag set when CMD19 succeeds */