Hi Jaehoon, Yes,Its depend on the below patch. mmc: dw_mmc: exynos: Add a new compatible string for exynos5420 http://permalink.gmane.org/gmane.linux.kernel.mmc/21060 Best Regards Yuvaraj On Fri, Aug 23, 2013 at 6:25 PM, Jaehoon Chung <jh80.chung@xxxxxxxxxxx> wrote: > Hi Yuvaraj, > > Is there dependency with other patch? > I didn't see the defined "DW_MCI_TYPE_EXYNOS5420". > If i missed something, let me know. > > Best Regards, > Jaehoon Chung > > On 08/23/2013 08:15 PM, Yuvaraj Kumar C D wrote: >> Exynos5420 Mobile Storage Host controller has Security Management Unit >> (SMU) for channel 0 and channel 1 (mainly for eMMC).This patch adds a >> quirk to bypass SMU as it is not being used yet. >> >> This patch is on top of the below patch by Doug Anderson. >> mmc: dw_mmc: Add exynos resume_noirq callback to clear WAKEUP_INT >> >> changes since V1: >> 1.avoid code duplication by calling dw_mci_exynos_priv_init in >> resume path. >> >> Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@xxxxxxxxxxx> >> Signed-off-by: Alim Akhtar <alim.akhtar@xxxxxxxxxxx> >> --- >> drivers/mmc/host/dw_mmc-exynos.c | 33 +++++++++++++++++++++++++++++++++ >> drivers/mmc/host/dw_mmc.c | 3 +++ >> include/linux/mmc/dw_mmc.h | 2 ++ >> 3 files changed, 38 insertions(+) >> >> diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c >> index 19c845b..8e70fc6 100644 >> --- a/drivers/mmc/host/dw_mmc-exynos.c >> +++ b/drivers/mmc/host/dw_mmc-exynos.c >> @@ -35,6 +35,25 @@ >> #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, >> @@ -74,6 +93,16 @@ 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 && >> + host->pdata->quirks & DW_MCI_QUIRK_BYPASS_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; >> } >> >> @@ -106,7 +135,11 @@ static int dw_mci_exynos_suspend(struct device *dev) >> static int dw_mci_exynos_resume(struct device *dev) >> { >> struct dw_mci *host = dev_get_drvdata(dev); >> + struct dw_mci_exynos_priv_data *priv = host->priv; >> >> + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS5420 && >> + host->pdata->quirks & DW_MCI_QUIRK_BYPASS_SMU) >> + dw_mci_exynos_priv_init(host); >> return dw_mci_resume(host); >> } >> >> diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c >> index 0c0cada..49df69f 100644 >> --- a/drivers/mmc/host/dw_mmc.c >> +++ b/drivers/mmc/host/dw_mmc.c >> @@ -2107,6 +2107,9 @@ static struct dw_mci_of_quirks { >> }, { >> .quirk = "broken-cd", >> .id = DW_MCI_QUIRK_BROKEN_CARD_DETECTION, >> + }, { >> + .quirk = "bypass-smu", >> + .id = DW_MCI_QUIRK_BYPASS_SMU, >> }, >> }; >> >> diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h >> index 198f0fa..2d3f83f 100644 >> --- a/include/linux/mmc/dw_mmc.h >> +++ b/include/linux/mmc/dw_mmc.h >> @@ -209,6 +209,8 @@ struct dw_mci_dma_ops { >> #define DW_MCI_QUIRK_HIGHSPEED BIT(2) >> /* Unreliable card detection */ >> #define DW_MCI_QUIRK_BROKEN_CARD_DETECTION BIT(3) >> +/*Bypass the Security management unit*/ >> +#define DW_MCI_QUIRK_BYPASS_SMU BIT(4) >> >> /* Slot level quirks */ >> /* This slot has no write protect */ >> > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
