[PATCH v1 4/8] mmc: socfpga_dw_mmc: Restore legacy clkmgr address retrieval

[alif.zakuan.yuslaimi at altera.com]

From: Alif Zakuan Yuslaimi <alif.zakuan.yuslaimi at altera.com>

Restore legacy implementation of retrieving clkmgr base address from
mach-socfpga/misc.c driver for our legacy devices.

Excluding Agilex7/7M from this implementation as these devices' clock
driver is already following clock driver model and is supporting
enable/disable APIs.

The legacy devices' clock driver will have to be refactored to support
driver model which enables us to support enable/disable APIs for these
devices.

Fixes: ab27182cac8f ("mmc: socfpga_dw_mmc: Enable/disable SDMMC clock via API")

Signed-off-by: Alif Zakuan Yuslaimi <alif.zakuan.yuslaimi at altera.com>
---
 drivers/mmc/socfpga_dw_mmc.c | 46 +++++++++++++++++++++++-------------
 1 file changed, 30 insertions(+), 16 deletions(-)

diff --git a/drivers/mmc/socfpga_dw_mmc.c b/drivers/mmc/socfpga_dw_mmc.c
index db4e0129c2e..6219284df3e 100644
--- a/drivers/mmc/socfpga_dw_mmc.c
+++ b/drivers/mmc/socfpga_dw_mmc.c
@@ -58,17 +58,24 @@ static int socfpga_dwmci_clksel(struct dwmci_host *host)
 	u32 sdmmc_mask = ((priv->smplsel & 0x7) << SYSMGR_SDMMC_SMPLSEL_SHIFT) |
 			 ((priv->drvsel & 0x7) << SYSMGR_SDMMC_DRVSEL_SHIFT);
 
-	ret = clk_get_by_name(priv->dev, "ciu", &priv->mmc_clk_ciu);
-	if (ret) {
-		debug("%s: Failed to get SDMMC clock from dts\n", __func__);
-		return ret;
-	}
-
-	/* Disable SDMMC clock. */
-	ret = clk_disable(&priv->mmc_clk_ciu);
-	if (ret) {
-		printf("%s: Failed to disable SDMMC clock\n", __func__);
-		return ret;
+	if (!IS_ENABLED(CONFIG_TARGET_SOCFPGA_AGILEX) &&
+	    !IS_ENABLED(CONFIG_TARGET_SOCFPGA_AGILEX7M)) {
+		/* Disable SDMMC clock. */
+		clrbits_le32(socfpga_get_clkmgr_addr() + CLKMGR_PERPLL_EN,
+			     CLKMGR_PERPLLGRP_EN_SDMMCCLK_MASK);
+	} else {
+		ret = clk_get_by_name(priv->dev, "ciu", &priv->mmc_clk_ciu);
+		if (ret) {
+			debug("%s: Failed to get SDMMC clock from dts\n", __func__);
+			return ret;
+		}
+
+		/* Disable SDMMC clock. */
+		ret = clk_disable(&priv->mmc_clk_ciu);
+		if (ret) {
+			printf("%s: Failed to disable SDMMC clock\n", __func__);
+			return ret;
+		}
 	}
 
 	debug("%s: drvsel %d smplsel %d\n", __func__,
@@ -88,11 +95,18 @@ static int socfpga_dwmci_clksel(struct dwmci_host *host)
 		readl(socfpga_get_sysmgr_addr() + SYSMGR_SDMMC));
 #endif
 
-	/* Enable SDMMC clock */
-	ret = clk_enable(&priv->mmc_clk_ciu);
-	if (ret) {
-		printf("%s: Failed to enable SDMMC clock\n", __func__);
-		return ret;
+	if (!IS_ENABLED(CONFIG_TARGET_SOCFPGA_AGILEX) &&
+	    !IS_ENABLED(CONFIG_TARGET_SOCFPGA_AGILEX7M)) {
+		/* Enable SDMMC clock */
+		setbits_le32(socfpga_get_clkmgr_addr() + CLKMGR_PERPLL_EN,
+			     CLKMGR_PERPLLGRP_EN_SDMMCCLK_MASK);
+	} else {
+		/* Enable SDMMC clock */
+		ret = clk_enable(&priv->mmc_clk_ciu);
+		if (ret) {
+			printf("%s: Failed to enable SDMMC clock\n", __func__);
+			return ret;
+		}
 	}
 
 	return 0;
-- 
2.43.7