diff options
Diffstat (limited to 'drivers/mmc/host/sdhci-esdhc-imx.c')
| -rw-r--r-- | drivers/mmc/host/sdhci-esdhc-imx.c | 45 |
1 files changed, 36 insertions, 9 deletions
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index 5ec8e4bf1ac7..1d7f84b23a22 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -8,6 +8,7 @@ * Author: Wolfram Sang <kernel@pengutronix.de> */ +#include <linux/bitfield.h> #include <linux/io.h> #include <linux/iopoll.h> #include <linux/delay.h> @@ -89,7 +90,8 @@ #define ESDHC_STD_TUNING_EN (1 << 24) /* NOTE: the minimum valid tuning start tap for mx6sl is 1 */ #define ESDHC_TUNING_START_TAP_DEFAULT 0x1 -#define ESDHC_TUNING_START_TAP_MASK 0xff +#define ESDHC_TUNING_START_TAP_MASK 0x7f +#define ESDHC_TUNING_CMD_CRC_CHECK_DISABLE (1 << 7) #define ESDHC_TUNING_STEP_MASK 0x00070000 #define ESDHC_TUNING_STEP_SHIFT 16 @@ -214,6 +216,7 @@ static const struct esdhc_soc_data usdhc_imx6sl_data = { static const struct esdhc_soc_data usdhc_imx6sll_data = { .flags = ESDHC_FLAG_USDHC | ESDHC_FLAG_STD_TUNING | ESDHC_FLAG_HAVE_CAP1 | ESDHC_FLAG_HS200 + | ESDHC_FLAG_HS400 | ESDHC_FLAG_STATE_LOST_IN_LPMODE, }; @@ -399,7 +402,8 @@ static u32 esdhc_readl_le(struct sdhci_host *host, int reg) val = SDHCI_SUPPORT_DDR50 | SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 | SDHCI_USE_SDR50_TUNING - | (SDHCI_TUNING_MODE_3 << SDHCI_RETUNING_MODE_SHIFT); + | FIELD_PREP(SDHCI_RETUNING_MODE_MASK, + SDHCI_TUNING_MODE_3); if (imx_data->socdata->flags & ESDHC_FLAG_HS400) val |= SDHCI_SUPPORT_HS400; @@ -417,9 +421,9 @@ static u32 esdhc_readl_le(struct sdhci_host *host, int reg) if (unlikely(reg == SDHCI_MAX_CURRENT) && esdhc_is_usdhc(imx_data)) { val = 0; - val |= 0xFF << SDHCI_MAX_CURRENT_330_SHIFT; - val |= 0xFF << SDHCI_MAX_CURRENT_300_SHIFT; - val |= 0xFF << SDHCI_MAX_CURRENT_180_SHIFT; + val |= FIELD_PREP(SDHCI_MAX_CURRENT_330_MASK, 0xFF); + val |= FIELD_PREP(SDHCI_MAX_CURRENT_300_MASK, 0xFF); + val |= FIELD_PREP(SDHCI_MAX_CURRENT_180_MASK, 0xFF); } if (unlikely(reg == SDHCI_INT_STATUS)) { @@ -1313,6 +1317,18 @@ static void sdhci_esdhc_imx_hwinit(struct sdhci_host *host) tmp |= imx_data->boarddata.tuning_step << ESDHC_TUNING_STEP_SHIFT; } + + /* Disable the CMD CRC check for tuning, if not, need to + * add some delay after every tuning command, because + * hardware standard tuning logic will directly go to next + * step once it detect the CMD CRC error, will not wait for + * the card side to finally send out the tuning data, trigger + * the buffer read ready interrupt immediately. If usdhc send + * the next tuning command some eMMC card will stuck, can't + * response, block the tuning procedure or the first command + * after the whole tuning procedure always can't get any response. + */ + tmp |= ESDHC_TUNING_CMD_CRC_CHECK_DISABLE; writel(tmp, host->ioaddr + ESDHC_TUNING_CTRL); } else if (imx_data->socdata->flags & ESDHC_FLAG_MAN_TUNING) { /* @@ -1596,6 +1612,10 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev) if (esdhc_is_usdhc(imx_data)) { host->quirks2 |= SDHCI_QUIRK2_PRESET_VALUE_BROKEN; host->mmc->caps |= MMC_CAP_1_8V_DDR | MMC_CAP_3_3V_DDR; + + /* GPIO CD can be set as a wakeup source */ + host->mmc->caps |= MMC_CAP_CD_WAKE; + if (!(imx_data->socdata->flags & ESDHC_FLAG_HS200)) host->quirks2 |= SDHCI_QUIRK2_BROKEN_HS200; @@ -1653,8 +1673,6 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev) if (err) goto disable_ahb_clk; - host->tuning_delay = 1; - sdhci_esdhc_imx_hwinit(host); err = sdhci_add_host(host); @@ -1731,8 +1749,14 @@ static int sdhci_esdhc_suspend(struct device *dev) mmc_retune_needed(host->mmc); ret = sdhci_suspend_host(host); - if (!ret) - return pinctrl_pm_select_sleep_state(dev); + if (ret) + return ret; + + ret = pinctrl_pm_select_sleep_state(dev); + if (ret) + return ret; + + ret = mmc_gpio_set_cd_wake(host->mmc, true); return ret; } @@ -1756,6 +1780,9 @@ static int sdhci_esdhc_resume(struct device *dev) if (host->mmc->caps2 & MMC_CAP2_CQE) ret = cqhci_resume(host->mmc); + if (!ret) + ret = mmc_gpio_set_cd_wake(host->mmc, false); + return ret; } #endif |