[U-Boot] [v3, 3/4] mmc: fsl_esdhc: rename fsl_esdhc_init to fsl_esdhc_get_cfg

11 Sep 2019

For non-DM code, below functions had similar names.
- fsl_esdhc_initialize
- fsl_esdhc_mmc_init
- fsl_esdhc_init
However fsl_esdhc_init was mainly used to get cfg. So rename it
to fsl_esdhc_get_cfg. Fix up bus-width capability handling, and
drop controller initialization because it will be re-initialized
in later esdhc_init_common for DM or esdhc_init for non-DM when use
it.
Signed-off-by: Yangbo Lu yangbo.lu@nxp.com
---
Changes for v2:
    - Rebased.
Changes for v3:
    - None.
---
 drivers/mmc/fsl_esdhc.c | 68 ++++++++-----------------------------------------
 1 file changed, 11 insertions(+), 57 deletions(-)

diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
index 3b079f1..03a7e89 100644
--- a/drivers/mmc/fsl_esdhc.c
+++ b/drivers/mmc/fsl_esdhc.c
@@ -25,14 +25,6 @@
DECLARE_GLOBAL_DATA_PTR;
-#define ESDHC_IRQ_EN_BITS	(IRQSTATEN_CC | IRQSTATEN_TC | \
-				IRQSTATEN_DINT | IRQSTATEN_BWR | \
-				IRQSTATEN_BRR | IRQSTATEN_CINT | \
-				IRQSTATEN_CTOE | IRQSTATEN_CCE | \
-				IRQSTATEN_CEBE | IRQSTATEN_CIE | \
-				IRQSTATEN_DTOE | IRQSTATEN_DCE | \
-				IRQSTATEN_DEBE)
-
 struct fsl_esdhc {
    uint    dsaddr;		/* SDMA system address register */
    uint    blkattr;	/* Block attributes register */
@@ -651,57 +643,25 @@ static int esdhc_getcd_common(struct fsl_esdhc_priv *priv)
    return timeout > 0;
 }
-static int esdhc_reset(struct fsl_esdhc *regs)
-{
-	ulong start;
-
-	/* reset the controller */
-	esdhc_setbits32(&regs->sysctl, SYSCTL_RSTA);
-
-	/* hardware clears the bit when it is done */
-	start = get_timer(0);
-	while ((esdhc_read32(&regs->sysctl) & SYSCTL_RSTA)) {
-		if (get_timer(start) > 100) {
-			printf("MMC/SD: Reset never completed.\n");
-			return -ETIMEDOUT;
-		}
-	}
-
-	return 0;
-}
-
 #if !CONFIG_IS_ENABLED(DM_MMC)
 static const struct mmc_ops esdhc_ops;
 #endif
-static int fsl_esdhc_init(struct fsl_esdhc_priv *priv,
-			  struct fsl_esdhc_plat *plat)
+static int fsl_esdhc_get_cfg(struct fsl_esdhc_priv *priv,
+			     struct fsl_esdhc_plat *plat)
 {
+	struct fsl_esdhc *regs = priv->esdhc_regs;
+	u32 caps, voltage_caps = 0;
    struct mmc_config *cfg;
-	struct fsl_esdhc *regs;
-	u32 caps, voltage_caps;
-	int ret;
if (!priv)
    	return -EINVAL;
-	regs = priv->esdhc_regs;
-
-	/* First reset the eSDHC controller */
-	ret = esdhc_reset(regs);
-	if (ret)
-		return ret;
-
-	esdhc_setbits32(&regs->sysctl, SYSCTL_PEREN | SYSCTL_HCKEN |
-				       SYSCTL_IPGEN | SYSCTL_CKEN);
-
-	writel(ESDHC_IRQ_EN_BITS, &regs->irqstaten);
    cfg = &plat->cfg;
 #ifndef CONFIG_DM_MMC
    memset(cfg, '\0', sizeof(*cfg));
 #endif
-	voltage_caps = 0;
    caps = esdhc_read32(&regs->hostcapblt);
#ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC135
@@ -739,18 +699,10 @@ static int fsl_esdhc_init(struct fsl_esdhc_priv *priv,
    else if (priv->bus_width == 4)
    	cfg->host_caps = MMC_MODE_4BIT;
-	cfg->host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT;
 #ifdef CONFIG_SYS_FSL_ESDHC_HAS_DDR_MODE
    cfg->host_caps |= MMC_MODE_DDR_52MHz;
 #endif
-	if (priv->bus_width > 0) {
-		if (priv->bus_width < 8)
-			cfg->host_caps &= ~MMC_MODE_8BIT;
-		if (priv->bus_width < 4)
-			cfg->host_caps &= ~MMC_MODE_4BIT;
-	}
-
    if (caps & HOSTCAPBLT2_HSS)
    	cfg->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
@@ -761,7 +713,6 @@ static int fsl_esdhc_init(struct fsl_esdhc_priv *priv,
cfg->f_min = 400000;
    cfg->f_max = min(priv->sdhc_clk, (u32)200000000);
-
    cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
return 0;
@@ -884,7 +835,10 @@ static int fsl_esdhc_cfg_to_priv(struct fsl_esdhc_cfg *cfg,
    	return -EINVAL;
priv->esdhc_regs = (struct fsl_esdhc *)(unsigned long)(cfg->esdhc_base);
-	priv->bus_width = cfg->max_bus_width;
+	if (cfg->max_bus_width)
+		priv->bus_width = cfg->max_bus_width;
+	else
+		priv->bus_width = 4;
    priv->sdhc_clk = cfg->sdhc_clk;
    priv->wp_enable  = cfg->wp_enable;
@@ -919,7 +873,7 @@ int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg)
    	return ret;
    }
-	ret = fsl_esdhc_init(priv, plat);
+	ret = fsl_esdhc_get_cfg(priv, plat);
    if (ret) {
    	debug("%s init failure\n", __func__);
    	free(plat);
@@ -1014,9 +968,9 @@ static int fsl_esdhc_probe(struct udevice *dev)
    	}
    }
-	ret = fsl_esdhc_init(priv, plat);
+	ret = fsl_esdhc_get_cfg(priv, plat);
    if (ret) {
-		dev_err(dev, "fsl_esdhc_init failure\n");
+		dev_err(dev, "fsl_esdhc_get_cfg failure\n");
    	return ret;
    }
-- 
2.7.4


    