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mmc: Convert HI6220 MMC driver to driver model

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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>
This commit is contained in:
Manivannan Sadhasivam 2018-12-27 19:04:04 +05:30 • committed by Tom Rini
parent 5bb409c1ba
commit 6240e64f92
3 changed files with 71 additions and 31 deletions
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1
configs/hikey_defconfig
View file

@ -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

1
configs/poplar_defconfig
View file

@ -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

100
drivers/mmc/hi6220_dw_mmc.c
View file

@ -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),
};