X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=drivers%2Fmmc%2Fzynq_sdhci.c;h=28cedf0c468b3027c4ac6394f2fcb76f0f5159f5;hb=61e745d1311532a90de537cc470da12d306ee193;hp=9e37af45fc658eca8a836b63d2aaa0b92c9cbea8;hpb=f0df254663d44f7fd4b714542bb4602626837465;p=platform%2Fkernel%2Fu-boot.git

diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c
index 9e37af4..28cedf0 100644
--- a/drivers/mmc/zynq_sdhci.c
+++ b/drivers/mmc/zynq_sdhci.c
@@ -1,40 +1,114 @@
 /*
- * (C) Copyright 2013 Inc.
+ * (C) Copyright 2013 - 2015 Xilinx, Inc.
  *
  * Xilinx Zynq SD Host Controller Interface
  *
- * This program is free software; you can redistribute it and/or modify it under
- * the terms of the GNU General Public License version 2 as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place, Suite 330, Boston, MA  02111-1307  USA
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
+#include <clk.h>
 #include <common.h>
+#include <dm.h>
+#include <fdtdec.h>
+#include <libfdt.h>
 #include <malloc.h>
 #include <sdhci.h>
-#include <asm/arch/sys_proto.h>
 
-int zynq_sdhci_init(u32 regbase)
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifndef CONFIG_ZYNQ_SDHCI_MIN_FREQ
+# define CONFIG_ZYNQ_SDHCI_MIN_FREQ	0
+#endif
+
+struct arasan_sdhci_plat {
+	struct mmc_config cfg;
+	struct mmc mmc;
+	unsigned int f_max;
+};
+
+static int arasan_sdhci_probe(struct udevice *dev)
 {
-	struct sdhci_host *host = NULL;
+	struct arasan_sdhci_plat *plat = dev_get_platdata(dev);
+	struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
+	struct sdhci_host *host = dev_get_priv(dev);
+	struct clk clk;
+	unsigned long clock;
+	int ret;
+
+	ret = clk_get_by_index(dev, 0, &clk);
+	if (ret < 0) {
+		dev_err(dev, "failed to get clock\n");
+		return ret;
+	}
 
-	host = (struct sdhci_host *)malloc(sizeof(struct sdhci_host));
-	if (!host) {
-		printf("zynq_sdhci_init: sdhci_host malloc fail\n");
-		return 1;
+	clock = clk_get_rate(&clk);
+	if (IS_ERR_VALUE(clock)) {
+		dev_err(dev, "failed to get rate\n");
+		return clock;
 	}
+	debug("%s: CLK %ld\n", __func__, clock);
+
+	ret = clk_enable(&clk);
+	if (ret && ret != -ENOSYS) {
+		dev_err(dev, "failed to enable clock\n");
+		return ret;
+	}
+
+	host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD |
+		       SDHCI_QUIRK_BROKEN_R1B;
+
+#ifdef CONFIG_ZYNQ_HISPD_BROKEN
+	host->quirks |= SDHCI_QUIRK_NO_HISPD_BIT;
+#endif
+
+	host->max_clk = clock;
 
-	host->name = "zynq_sdhci";
-	host->ioaddr = (void *)regbase;
-	host->quirks = SDHCI_QUIRK_NO_CD | SDHCI_QUIRK_WAIT_SEND_CMD;
-	host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
+	ret = sdhci_setup_cfg(&plat->cfg, host, plat->f_max,
+			      CONFIG_ZYNQ_SDHCI_MIN_FREQ);
+	host->mmc = &plat->mmc;
+	if (ret)
+		return ret;
+	host->mmc->priv = host;
+	host->mmc->dev = dev;
+	upriv->mmc = host->mmc;
 
-	host->host_caps = MMC_MODE_HC;
+	return sdhci_probe(dev);
+}
+
+static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev)
+{
+	struct arasan_sdhci_plat *plat = dev_get_platdata(dev);
+	struct sdhci_host *host = dev_get_priv(dev);
+
+	host->name = dev->name;
+	host->ioaddr = (void *)dev_get_addr(dev);
+
+	plat->f_max = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
+				"max-frequency", CONFIG_ZYNQ_SDHCI_MAX_FREQ);
 
-	add_sdhci(host, 52000000, 52000000 >> 9);
 	return 0;
 }
+
+static int arasan_sdhci_bind(struct udevice *dev)
+{
+	struct arasan_sdhci_plat *plat = dev_get_platdata(dev);
+
+	return sdhci_bind(dev, &plat->mmc, &plat->cfg);
+}
+
+static const struct udevice_id arasan_sdhci_ids[] = {
+	{ .compatible = "arasan,sdhci-8.9a" },
+	{ }
+};
+
+U_BOOT_DRIVER(arasan_sdhci_drv) = {
+	.name		= "arasan_sdhci",
+	.id		= UCLASS_MMC,
+	.of_match	= arasan_sdhci_ids,
+	.ofdata_to_platdata = arasan_sdhci_ofdata_to_platdata,
+	.ops		= &sdhci_ops,
+	.bind		= arasan_sdhci_bind,
+	.probe		= arasan_sdhci_probe,
+	.priv_auto_alloc_size = sizeof(struct sdhci_host),
+	.platdata_auto_alloc_size = sizeof(struct arasan_sdhci_plat),
+};