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authorKever Yang <kever.yang@rock-chips.com>2016-07-18 17:00:58 +0800
committerSimon Glass <sjg@chromium.org>2016-07-25 20:46:46 -0600
commit79c830653bab23bb0b6ce34793659b459cbacaa0 (patch)
tree273332d2c07df7bde52799aeac6b54bd58b5c012 /drivers/mmc/rockchip_sdhci.c
parentd26f375ae467ec633ac4f8ab31ad6337893c0fd3 (diff)
mmc: rockchip: add SDHCI driver support for rockchip soc
Rockchip rk3399 using arasan sdhci-5.1 controller. This patch add the controller support to enable mmc device with full driver-model support, tested on rk3399 evb board. According to my test result, this driver should be OK, the command "part list mmc 0" can result in a right output, but all the mmc command failed like this: => mmc info No MMC device available Command failed, result=1 The result of get_mmc_num in cmd/mmc.c is always 0? Signed-off-by: Kever Yang <kever.yang@rock-chips.com> Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/mmc/rockchip_sdhci.c')
-rw-r--r--drivers/mmc/rockchip_sdhci.c93
1 files changed, 93 insertions, 0 deletions
diff --git a/drivers/mmc/rockchip_sdhci.c b/drivers/mmc/rockchip_sdhci.c
new file mode 100644
index 0000000000..023c29be0a
--- /dev/null
+++ b/drivers/mmc/rockchip_sdhci.c
@@ -0,0 +1,93 @@
+/*
+ * (C) Copyright 2016 Fuzhou Rockchip Electronics Co., Ltd
+ *
+ * Rockchip SD Host Controller Interface
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <fdtdec.h>
+#include <libfdt.h>
+#include <malloc.h>
+#include <sdhci.h>
+
+/* 400KHz is max freq for card ID etc. Use that as min */
+#define EMMC_MIN_FREQ 400000
+
+struct rockchip_sdhc_plat {
+ struct mmc_config cfg;
+ struct mmc mmc;
+};
+
+struct rockchip_sdhc {
+ struct sdhci_host host;
+ void *base;
+};
+
+static int arasan_sdhci_probe(struct udevice *dev)
+{
+ struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
+ struct rockchip_sdhc_plat *plat = dev_get_platdata(dev);
+ struct rockchip_sdhc *prv = dev_get_priv(dev);
+ struct sdhci_host *host = &prv->host;
+ int ret;
+ u32 caps;
+
+ host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
+ host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD;
+
+ caps = sdhci_readl(host, SDHCI_CAPABILITIES);
+ ret = sdhci_setup_cfg(&plat->cfg, dev->name, host->bus_width,
+ caps, CONFIG_ROCKCHIP_SDHCI_MAX_FREQ, EMMC_MIN_FREQ,
+ host->version, host->quirks, 0);
+
+ host->mmc = &plat->mmc;
+ if (ret)
+ return ret;
+ host->mmc->priv = &prv->host;
+ host->mmc->dev = dev;
+ upriv->mmc = host->mmc;
+
+ return sdhci_probe(dev);
+}
+
+static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev)
+{
+ struct sdhci_host *host = dev_get_priv(dev);
+
+ host->name = dev->name;
+ host->ioaddr = dev_get_addr_ptr(dev);
+
+ return 0;
+}
+
+static int rockchip_sdhci_bind(struct udevice *dev)
+{
+ struct rockchip_sdhc_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 arasan_sdhci_ids[] = {
+ { .compatible = "arasan,sdhci-5.1" },
+ { }
+};
+
+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 = rockchip_sdhci_bind,
+ .probe = arasan_sdhci_probe,
+ .priv_auto_alloc_size = sizeof(struct rockchip_sdhc),
+ .platdata_auto_alloc_size = sizeof(struct rockchip_sdhc_plat),
+};