mmc: Convert HI6220 MMC driver to driver model

Convert HiSilicon HI6220 MMC driver based on DWMMC IP to driver
model.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
[trini: Enable this on poplar]
Signed-off-by: Tom Rini <trini@konsulko.com>

diff --git a/configs/hikey_defconfig b/configs/hikey_defconfig
index 3bc5ceb..e9a9857 100644 (file)
--- a/configs/hikey_defconfig
+++ b/configs/hikey_defconfig
@@ -18,6 +18,7 @@ CONFIG_DEFAULT_DEVICE_TREE="hi6220-hikey"
 CONFIG_ENV_IS_IN_FAT=y
 CONFIG_ENV_FAT_INTERFACE="mmc"
 CONFIG_ENV_FAT_DEVICE_AND_PART="1:1"
+CONFIG_DM_MMC=y
 CONFIG_MMC_DW=y
 CONFIG_MMC_DW_K3=y
 CONFIG_CONS_INDEX=4

diff --git a/configs/poplar_defconfig b/configs/poplar_defconfig
index ea0ea89..81bd370 100644 (file)
--- a/configs/poplar_defconfig
+++ b/configs/poplar_defconfig
@@ -16,6 +16,7 @@ CONFIG_FASTBOOT_BUF_ADDR=0x20000000
 CONFIG_FASTBOOT_BUF_SIZE=0x10000000
 CONFIG_FASTBOOT_FLASH=y
 CONFIG_FASTBOOT_FLASH_MMC_DEV=0
+CONFIG_DM_MMC=y
 CONFIG_MMC_DW=y
 CONFIG_MMC_DW_K3=y
 CONFIG_USB=y

diff --git a/drivers/mmc/hi6220_dw_mmc.c b/drivers/mmc/hi6220_dw_mmc.c
index ce395d5..cc58aff 100644 (file)
--- a/drivers/mmc/hi6220_dw_mmc.c
+++ b/drivers/mmc/hi6220_dw_mmc.c
@@ -5,51 +5,89 @@
  */
 
 #include <common.h>
+#include <dm.h>
 #include <dwmmc.h>
+#include <errno.h>
+#include <fdtdec.h>
 #include <malloc.h>
-#include <linux/errno.h>
 
-#define        DWMMC_MAX_CH_NUM                4
+DECLARE_GLOBAL_DATA_PTR;
 
-#define        DWMMC_MAX_FREQ                  50000000
-#define        DWMMC_MIN_FREQ                  400000
+struct hi6220_dwmmc_plat {
+       struct mmc_config cfg;
+       struct mmc mmc;
+};
 
-/* Source clock is configured to 100MHz by ATF bl1*/
-#define MMC0_DEFAULT_FREQ              100000000
+struct hi6220_dwmmc_priv_data {
+       struct dwmci_host host;
+};
 
-static int hi6220_dwmci_core_init(struct dwmci_host *host, int index)
+static int hi6220_dwmmc_ofdata_to_platdata(struct udevice *dev)
 {
-       host->name = "Hisilicon DWMMC";
+       struct hi6220_dwmmc_priv_data *priv = dev_get_priv(dev);
+       struct dwmci_host *host = &priv->host;
 
-       host->dev_index = index;
+       host->name = dev->name;
+       host->ioaddr = (void *)devfdt_get_addr(dev);
+       host->buswidth = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
+                                       "bus-width", 4);
+
+       /* use non-removable property for differentiating SD card and eMMC */
+       if (dev_read_bool(dev, "non-removable"))
+               host->dev_index = 0;
+       else
+               host->dev_index = 1;
+
+       host->priv = priv;
 
-       /* 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", index);
-               return -1;
-       }
        return 0;
 }
 
-/*
- * This function adds the mmc channel to be registered with mmc core.
- * index -     mmc channel number.
- * regbase -   register base address of mmc channel specified in 'index'.
- * bus_width - operating bus width of mmc channel specified in 'index'.
- */
-int hi6220_dwmci_add_port(int index, u32 regbase, int bus_width)
+static int hi6220_dwmmc_probe(struct udevice *dev)
 {
-       struct dwmci_host *host = NULL;
+       struct hi6220_dwmmc_plat *plat = dev_get_platdata(dev);
+       struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
+       struct hi6220_dwmmc_priv_data *priv = dev_get_priv(dev);
+       struct dwmci_host *host = &priv->host;
 
-       host = calloc(1, sizeof(struct dwmci_host));
-       if (!host) {
-               pr_err("dwmci_host calloc failed!\n");
-               return -ENOMEM;
-       }
+       /* Use default bus speed due to absence of clk driver */
+       host->bus_hz = 50000000;
 
-       host->ioaddr = (void *)(ulong)regbase;
-       host->buswidth = bus_width;
-       host->bus_hz = MMC0_DEFAULT_FREQ;
+       dwmci_setup_cfg(&plat->cfg, host, host->bus_hz, 400000);
+       host->mmc = &plat->mmc;
 
-       return hi6220_dwmci_core_init(host, index);
+       host->mmc->priv = &priv->host;
+       upriv->mmc = host->mmc;
+       host->mmc->dev = dev;
+
+       return dwmci_probe(dev);
 }
+
+static int hi6220_dwmmc_bind(struct udevice *dev)
+{
+       struct hi6220_dwmmc_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 hi6220_dwmmc_ids[] = {
+       { .compatible = "hisilicon,hi6220-dw-mshc" },
+       { }
+};
+
+U_BOOT_DRIVER(hi6220_dwmmc_drv) = {
+       .name = "hi6220_dwmmc",
+       .id = UCLASS_MMC,
+       .of_match = hi6220_dwmmc_ids,
+       .ofdata_to_platdata = hi6220_dwmmc_ofdata_to_platdata,
+       .ops = &dm_dwmci_ops,
+       .bind = hi6220_dwmmc_bind,
+       .probe = hi6220_dwmmc_probe,
+       .priv_auto_alloc_size = sizeof(struct hi6220_dwmmc_priv_data),
+       .platdata_auto_alloc_size = sizeof(struct hi6220_dwmmc_plat),
+};