mmc: s5p_sdhci: support the Driver model for Exynos
This patch support the driver model for s5p_sdhci controller.
To support the legacy model, maintained the existing code.
Note: If use the Driver Model, it needs to modify the device-tree.
In future, will update the Device-tree and enable the configuratioin.
(CONFIG_BLK, CONFIG_DM_MMC and CONFING_DM_MMC_OPS)
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Minkyu Kang <mk7.kang@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/mmc/s5p_sdhci.c b/drivers/mmc/s5p_sdhci.c
index 3bace21..0d65783 100644
--- a/drivers/mmc/s5p_sdhci.c
+++ b/drivers/mmc/s5p_sdhci.c
@@ -6,6 +6,7 @@
*/
#include <common.h>
+#include <dm.h>
#include <malloc.h>
#include <sdhci.h>
#include <fdtdec.h>
@@ -16,6 +17,15 @@
#include <errno.h>
#include <asm/arch/pinmux.h>
+#ifdef CONFIG_DM_MMC
+struct s5p_sdhci_plat {
+ struct mmc_config cfg;
+ struct mmc mmc;
+};
+
+DECLARE_GLOBAL_DATA_PTR;
+#endif
+
static char *S5P_NAME = "SAMSUNG SDHCI";
static void s5p_sdhci_set_control_reg(struct sdhci_host *host)
{
@@ -79,7 +89,11 @@
if (host->bus_width == 8)
host->host_caps |= MMC_MODE_8BIT;
+#ifndef CONFIG_BLK
return add_sdhci(host, 52000000, 400000);
+#else
+ return 0;
+#endif
}
int s5p_sdhci_init(u32 regbase, int index, int bus_width)
@@ -215,3 +229,60 @@
return process_nodes(blob, node_list, count);
}
#endif
+
+#ifdef CONFIG_DM_MMC
+static int s5p_sdhci_probe(struct udevice *dev)
+{
+ struct s5p_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);
+ int ret;
+
+ ret = sdhci_get_config(gd->fdt_blob, dev->of_offset, host);
+ if (ret)
+ return ret;
+
+ ret = do_sdhci_init(host);
+ if (ret)
+ return ret;
+
+ ret = sdhci_setup_cfg(&plat->cfg, host, 52000000, 400000);
+ if (ret)
+ return ret;
+
+ host->mmc = &plat->mmc;
+ host->mmc->priv = host;
+ host->mmc->dev = dev;
+ upriv->mmc = host->mmc;
+
+ return sdhci_probe(dev);
+}
+
+static int s5p_sdhci_bind(struct udevice *dev)
+{
+ struct s5p_sdhci_plat *plat = dev_get_platdata(dev);
+ int ret;
+
+ ret = sdhci_bind(dev, &plat->mmc, &plat->cfg);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static const struct udevice_id s5p_sdhci_ids[] = {
+ { .compatible = "samsung,exynos4412-sdhci"},
+ { }
+};
+
+U_BOOT_DRIVER(s5p_sdhci_drv) = {
+ .name = "s5p_sdhci",
+ .id = UCLASS_MMC,
+ .of_match = s5p_sdhci_ids,
+ .bind = s5p_sdhci_bind,
+ .ops = &sdhci_ops,
+ .probe = s5p_sdhci_probe,
+ .priv_auto_alloc_size = sizeof(struct sdhci_host),
+ .platdata_auto_alloc_size = sizeof(struct s5p_sdhci_plat),
+};
+#endif /* CONFIG_DM_MMC */