[U-Boot] [PATCH 3/3] mmc: fsl_esdhc: rename fsl_esdhc_init to fsl_esdhc_get_cfg

[Yangbo Lu]

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...@nxp.com>
---
 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 d176bb3..bdf5b14 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 */
@@ -651,55 +643,23 @@ 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;
-}
-
 static const struct mmc_ops esdhc_ops;
 
-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
@@ -737,18 +697,10 @@ 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;
 
@@ -759,7 +711,6 @@ 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;
@@ -882,7 +833,10 @@ 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;
 
@@ -917,7 +871,7 @@ 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);
@@ -1012,9 +966,9 @@ 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

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