diff options
| -rw-r--r-- | drivers/mmc/host/dw_mmc-exynos.c | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c index 958d41652cb..84e4d2f0dc1 100644 --- a/drivers/mmc/host/dw_mmc-exynos.c +++ b/drivers/mmc/host/dw_mmc-exynos.c @@ -36,12 +36,32 @@ #define EXYNOS4210_FIXED_CIU_CLK_DIV 2 #define EXYNOS4412_FIXED_CIU_CLK_DIV 4 +/* Block number in eMMC */ +#define DWMCI_BLOCK_NUM 0xFFFFFFFF + +#define SDMMC_EMMCP_BASE 0x1000 +#define SDMMC_MPSECURITY (SDMMC_EMMCP_BASE + 0x0010) +#define SDMMC_MPSBEGIN0 (SDMMC_EMMCP_BASE + 0x0200) +#define SDMMC_MPSEND0 (SDMMC_EMMCP_BASE + 0x0204) +#define SDMMC_MPSCTRL0 (SDMMC_EMMCP_BASE + 0x020C) + +/* SMU control bits */ +#define DWMCI_MPSCTRL_SECURE_READ_BIT BIT(7) +#define DWMCI_MPSCTRL_SECURE_WRITE_BIT BIT(6) +#define DWMCI_MPSCTRL_NON_SECURE_READ_BIT BIT(5) +#define DWMCI_MPSCTRL_NON_SECURE_WRITE_BIT BIT(4) +#define DWMCI_MPSCTRL_USE_FUSE_KEY BIT(3) +#define DWMCI_MPSCTRL_ECB_MODE BIT(2) +#define DWMCI_MPSCTRL_ENCRYPTION BIT(1) +#define DWMCI_MPSCTRL_VALID BIT(0) + /* Variations in Exynos specific dw-mshc controller */ enum dw_mci_exynos_type { DW_MCI_TYPE_EXYNOS4210, DW_MCI_TYPE_EXYNOS4412, DW_MCI_TYPE_EXYNOS5250, DW_MCI_TYPE_EXYNOS5420, + DW_MCI_TYPE_EXYNOS5420_SMU, }; /* Exynos implementation specific driver private data */ @@ -68,6 +88,9 @@ static struct dw_mci_exynos_compatible { }, { .compatible = "samsung,exynos5420-dw-mshc", .ctrl_type = DW_MCI_TYPE_EXYNOS5420, + }, { + .compatible = "samsung,exynos5420-dw-mshc-smu", + .ctrl_type = DW_MCI_TYPE_EXYNOS5420_SMU, }, }; @@ -75,6 +98,15 @@ static int dw_mci_exynos_priv_init(struct dw_mci *host) { struct dw_mci_exynos_priv_data *priv = host->priv; + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS5420_SMU) { + mci_writel(host, MPSBEGIN0, 0); + mci_writel(host, MPSEND0, DWMCI_BLOCK_NUM); + mci_writel(host, MPSCTRL0, DWMCI_MPSCTRL_SECURE_WRITE_BIT | + DWMCI_MPSCTRL_NON_SECURE_READ_BIT | + DWMCI_MPSCTRL_VALID | + DWMCI_MPSCTRL_NON_SECURE_WRITE_BIT); + } + return 0; } @@ -83,7 +115,8 @@ static int dw_mci_exynos_setup_clock(struct dw_mci *host) struct dw_mci_exynos_priv_data *priv = host->priv; if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS5250 || - priv->ctrl_type == DW_MCI_TYPE_EXYNOS5420) + priv->ctrl_type == DW_MCI_TYPE_EXYNOS5420 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS5420_SMU) host->bus_hz /= (priv->ciu_div + 1); else if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS4412) host->bus_hz /= EXYNOS4412_FIXED_CIU_CLK_DIV; @@ -185,6 +218,8 @@ static const struct of_device_id dw_mci_exynos_match[] = { .data = &exynos_drv_data, }, { .compatible = "samsung,exynos5420-dw-mshc", .data = &exynos_drv_data, }, + { .compatible = "samsung,exynos5420-dw-mshc-smu", + .data = &exynos_drv_data, }, {}, }; MODULE_DEVICE_TABLE(of, dw_mci_exynos_match); |