* [U-Boot] [PATCH] mmc: exynos_dw_mmc: support the Driver mode for Exynos
@ 2016-06-30 11:57 ` Jaehoon Chung
2016-06-30 15:23 ` Simon Glass
2016-07-12 10:51 ` Minkyu Kang
0 siblings, 2 replies; 3+ messages in thread
From: Jaehoon Chung @ 2016-06-30 11:57 UTC (permalink / raw)
To: u-boot
This patch support the driver mode for exynos dwmmc controller.
To support the legacy model, maintained the existing code.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
---
drivers/mmc/exynos_dw_mmc.c | 72 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 72 insertions(+)
diff --git a/drivers/mmc/exynos_dw_mmc.c b/drivers/mmc/exynos_dw_mmc.c
index ab0df46..283befc 100644
--- a/drivers/mmc/exynos_dw_mmc.c
+++ b/drivers/mmc/exynos_dw_mmc.c
@@ -23,8 +23,21 @@
#define DWMMC_MMC0_SDR_TIMING_VAL 0x03030001
#define DWMMC_MMC2_SDR_TIMING_VAL 0x03020001
+#ifdef CONFIG_DM_MMC
+#include <dm.h>
+DECLARE_GLOBAL_DATA_PTR;
+
+struct exynos_mmc_plat {
+ struct mmc_config cfg;
+ struct mmc mmc;
+};
+#endif
+
/* Exynos implmentation specific drver private data */
struct dwmci_exynos_priv_data {
+#ifdef CONFIG_DM_MMC
+ struct dwmci_host host;
+#endif
u32 sdr_timing;
};
@@ -105,11 +118,15 @@ static int exynos_dwmci_core_init(struct dwmci_host *host)
host->caps = MMC_MODE_DDR_52MHz;
host->clksel = exynos_dwmci_clksel;
host->get_mmc_clk = exynos_dwmci_get_clk;
+
+#ifndef CONFIG_DM_MMC
/* Add the mmc channel to be registered with mmc core */
if (add_dwmci(host, DWMMC_MAX_FREQ, DWMMC_MIN_FREQ)) {
printf("DWMMC%d registration failed\n", host->dev_index);
return -1;
}
+#endif
+
return 0;
}
@@ -237,3 +254,58 @@ int exynos_dwmmc_init(const void *blob)
return err;
}
+
+#ifdef CONFIG_DM_MMC
+static int exynos_dwmmc_probe(struct udevice *dev)
+{
+ struct exynos_mmc_plat *plat = dev_get_platdata(dev);
+ struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
+ struct dwmci_exynos_priv_data *priv = dev_get_priv(dev);
+ struct dwmci_host *host = &priv->host;
+ int err;
+
+ err = exynos_dwmci_get_config(gd->fdt_blob, dev->of_offset, host);
+ if (err)
+ return err;
+ err = do_dwmci_init(host);
+ if (err)
+ return err;
+
+ dwmci_setup_cfg(&plat->cfg, host->name, host->buswidth, host->caps,
+ DWMMC_MAX_FREQ, DWMMC_MIN_FREQ);
+ host->mmc = &plat->mmc;
+ host->mmc->priv = &priv->host;
+ host->priv = dev;
+ upriv->mmc = host->mmc;
+
+ return dwmci_probe(dev);
+}
+
+static int exynos_dwmmc_bind(struct udevice *dev)
+{
+ struct exynos_mmc_plat *plat = dev_get_platdata(dev);
+ int ret;
+
+ ret = dwmci_bind(dev, &plat->mmc, &plat->cfg);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static const struct udevice_id exynos_dwmmc_ids[] = {
+ { .compatible = "samsung,exynos4412-dw-mshc" },
+ { }
+};
+
+U_BOOT_DRIVER(exynos_dwmmc_drv) = {
+ .name = "exynos_dwmmc",
+ .id = UCLASS_MMC,
+ .of_match = exynos_dwmmc_ids,
+ .bind = exynos_dwmmc_bind,
+ .ops = &dm_dwmci_ops,
+ .probe = exynos_dwmmc_probe,
+ .priv_auto_alloc_size = sizeof(struct dwmci_exynos_priv_data),
+ .platdata_auto_alloc_size = sizeof(struct exynos_mmc_plat),
+};
+#endif
--
1.9.1
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