[PATCH 1/3] mci: imx-esdhc: add layerscape flag

[Sascha Hauer]

More Layerscape specifics are about to come. Instead of adding a
specific quirk flag for each of them, rename the ESDHC_FLAG_CACHE_SNOOPING
flag to ESDHC_FLAG_LAYERSCAPE to get a common layerscape flag.

>From looking at the Kernel driver it seems we can use these flag for the
modern Layerscape SoCs, we would have to revisit this once we support
LS1012.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 drivers/mci/imx-esdhc.c | 4 ++--
 drivers/mci/imx-esdhc.h | 9 +++++++--
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/mci/imx-esdhc.c b/drivers/mci/imx-esdhc.c
index f30a791fa4..90a6c12439 100644
--- a/drivers/mci/imx-esdhc.c
+++ b/drivers/mci/imx-esdhc.c
@@ -232,7 +232,7 @@ static int esdhc_init(struct mci_host *mci, struct device *dev)
 	sdhci_write32(&host->sdhci, SDHCI_MMC_BOOT, 0);
 
 	/* Enable cache snooping */
-	if (host->socdata->flags & ESDHC_FLAG_CACHE_SNOOPING)
+	if (esdhc_is_layerscape(host))
 		esdhc_setbits32(host, ESDHC_DMA_SYSCTL, ESDHC_SYSCTL_DMA_SNOOP);
 
 	/* Set the initial clock speed */
@@ -377,7 +377,7 @@ static struct esdhc_soc_data usdhc_imx6sx_data = {
 
 static struct esdhc_soc_data esdhc_ls_data = {
 	.flags = ESDHC_FLAG_MULTIBLK_NO_INT | ESDHC_FLAG_BIGENDIAN |
-		 ESDHC_FLAG_CACHE_SNOOPING,
+		 ESDHC_FLAG_LAYERSCAPE,
 };
 
 static __maybe_unused struct of_device_id fsl_esdhc_compatible[] = {
diff --git a/drivers/mci/imx-esdhc.h b/drivers/mci/imx-esdhc.h
index b14039757a..6810039a96 100644
--- a/drivers/mci/imx-esdhc.h
+++ b/drivers/mci/imx-esdhc.h
@@ -103,8 +103,8 @@
 #define ESDHC_FLAG_HS400		BIT(9)
 /* Need to access registers in bigendian mode */
 #define ESDHC_FLAG_BIGENDIAN		BIT(10)
-/* Enable cache snooping */
-#define ESDHC_FLAG_CACHE_SNOOPING	BIT(11)
+/* Layerscape variant ls1046a, ls1028a, ls1088a, revisit for ls1012a */
+#define ESDHC_FLAG_LAYERSCAPE		BIT(11)
 
 struct esdhc_soc_data {
 	u32 flags;
@@ -124,6 +124,11 @@ static inline int esdhc_is_usdhc(struct fsl_esdhc_host *data)
 	return !!(data->socdata->flags & ESDHC_FLAG_USDHC);
 }
 
+static inline int esdhc_is_layerscape(struct fsl_esdhc_host *data)
+{
+	return !!(data->socdata->flags & ESDHC_FLAG_LAYERSCAPE);
+}
+
 static inline struct fsl_esdhc_host *sdhci_to_esdhc(struct sdhci *sdhci)
 {
 	return container_of(sdhci, struct fsl_esdhc_host, sdhci);
-- 
2.39.2