dm: mmc: sunxi: Drop mmc_clk_io_on()

This function has #ifdefs in it which we want to avoid for driver model.
Instead we should use different compatible strings and the .data field.
It also uses the MMC device number which is not available in driver
model except through aliases.

Move the function's into its caller so that the driver-model version can
do things its own way.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>

drivers/mmc/sunxi_mmc.c

@@ -153,29 +153,6 @@ static int mmc_set_mod_clk(struct sunxi_mmc_priv *priv, unsigned int hz)
 	return 0;
 }
 
-static int mmc_clk_io_on(int sdc_no)
-{
-	struct sunxi_mmc_priv *priv = &mmc_host[sdc_no];
-	struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
-
-	debug("init mmc %d clock and io\n", sdc_no);
-
-	/* config ahb clock */
-	setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_MMC(sdc_no));
-
-#ifdef CONFIG_SUNXI_GEN_SUN6I
-	/* unassert reset */
-	setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_MMC(sdc_no));
-#endif
-#if defined(CONFIG_MACH_SUN9I)
-	/* sun9i has a mmc-common module, also set the gate and reset there */
-	writel(SUNXI_MMC_COMMON_CLK_GATE | SUNXI_MMC_COMMON_RESET,
-	       SUNXI_MMC_COMMON_BASE + 4 * sdc_no);
-#endif
-
-	return mmc_set_mod_clk(priv, 24000000);
-}
-
 static int mmc_update_clk(struct sunxi_mmc_priv *priv)
 {
 	unsigned int cmd;
@@ -467,8 +444,10 @@ static const struct mmc_ops sunxi_mmc_ops = {
 
 struct mmc *sunxi_mmc_init(int sdc_no)
 {
+	struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
 	struct sunxi_mmc_priv *priv = &mmc_host[sdc_no];
 	struct mmc_config *cfg = &priv->cfg;
+	int ret;
 
 	memset(priv, '\0', sizeof(struct sunxi_mmc_priv));
 
@@ -490,7 +469,22 @@ struct mmc *sunxi_mmc_init(int sdc_no)
 	if (mmc_resource_init(sdc_no) != 0)
 		return NULL;
 
-	mmc_clk_io_on(sdc_no);
+	/* config ahb clock */
+	debug("init mmc %d clock and io\n", sdc_no);
+	setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_MMC(sdc_no));
+
+#ifdef CONFIG_SUNXI_GEN_SUN6I
+	/* unassert reset */
+	setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_MMC(sdc_no));
+#endif
+#if defined(CONFIG_MACH_SUN9I)
+	/* sun9i has a mmc-common module, also set the gate and reset there */
+	writel(SUNXI_MMC_COMMON_CLK_GATE | SUNXI_MMC_COMMON_RESET,
+	       SUNXI_MMC_COMMON_BASE + 4 * sdc_no);
+#endif
+	ret = mmc_set_mod_clk(priv, 24000000);
+	if (ret)
+		return NULL;
 
 	return mmc_create(cfg, mmc_host);
 }