1 files changed, 45 insertions, 34 deletions

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index c7851c0aabc..6f0bfc0c8c9 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1618,7 +1618,7 @@ static int sdhci_do_3_3v_signal_voltage_switch(struct sdhci_host *host,
 	sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
 
 	if (host->vqmmc) {
-		ret = regulator_set_voltage(host->vqmmc, 3300000, 3300000);
+		ret = regulator_set_voltage(host->vqmmc, 2700000, 3600000);
 		if (ret) {
 			pr_warning("%s: Switching to 3.3V signalling voltage "
 				   " failed\n", mmc_hostname(host->mmc));
@@ -1662,7 +1662,7 @@ static int sdhci_do_1_8v_signal_voltage_switch(struct sdhci_host *host,
 		 */
 		if (host->vqmmc)
 			ret = regulator_set_voltage(host->vqmmc,
-				1800000, 1800000);
+				1700000, 1950000);
 		else
 			ret = 0;
 
@@ -1994,30 +1994,11 @@ static void sdhci_enable_preset_value(struct mmc_host *mmc, bool enable)
 	sdhci_runtime_pm_put(host);
 }
 
-static const struct mmc_host_ops sdhci_ops = {
-	.request	= sdhci_request,
-	.set_ios	= sdhci_set_ios,
-	.get_ro		= sdhci_get_ro,
-	.hw_reset	= sdhci_hw_reset,
-	.enable_sdio_irq = sdhci_enable_sdio_irq,
-	.start_signal_voltage_switch	= sdhci_start_signal_voltage_switch,
-	.execute_tuning			= sdhci_execute_tuning,
-	.enable_preset_value		= sdhci_enable_preset_value,
-};
-
-/*****************************************************************************\
- *                                                                           *
- * Tasklets                                                                  *
- *                                                                           *
-\*****************************************************************************/
-
-static void sdhci_tasklet_card(unsigned long param)
+static void sdhci_card_event(struct mmc_host *mmc)
 {
-	struct sdhci_host *host;
+	struct sdhci_host *host = mmc_priv(mmc);
 	unsigned long flags;
 
-	host = (struct sdhci_host*)param;
-
 	spin_lock_irqsave(&host->lock, flags);
 
 	/* Check host->mrq first in case we are runtime suspended */
@@ -2036,6 +2017,31 @@ static void sdhci_tasklet_card(unsigned long param)
 	}
 
 	spin_unlock_irqrestore(&host->lock, flags);
+}
+
+static const struct mmc_host_ops sdhci_ops = {
+	.request	= sdhci_request,
+	.set_ios	= sdhci_set_ios,
+	.get_ro		= sdhci_get_ro,
+	.hw_reset	= sdhci_hw_reset,
+	.enable_sdio_irq = sdhci_enable_sdio_irq,
+	.start_signal_voltage_switch	= sdhci_start_signal_voltage_switch,
+	.execute_tuning			= sdhci_execute_tuning,
+	.enable_preset_value		= sdhci_enable_preset_value,
+	.card_event			= sdhci_card_event,
+};
+
+/*****************************************************************************\
+ *                                                                           *
+ * Tasklets                                                                  *
+ *                                                                           *
+\*****************************************************************************/
+
+static void sdhci_tasklet_card(unsigned long param)
+{
+	struct sdhci_host *host = (struct sdhci_host*)param;
+
+	sdhci_card_event(host->mmc);
 
 	mmc_detect_change(host->mmc, msecs_to_jiffies(200));
 }
@@ -2282,6 +2288,8 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
 		pr_err("%s: ADMA error\n", mmc_hostname(host->mmc));
 		sdhci_show_adma_error(host);
 		host->data->error = -EIO;
+		if (host->ops->adma_workaround)
+			host->ops->adma_workaround(host, intmask);
 	}
 
 	if (host->data->error)
@@ -2858,10 +2866,16 @@ int sdhci_add_host(struct sdhci_host *host)
 				mmc_hostname(mmc));
 			host->vqmmc = NULL;
 		}
-	}
-	else if (regulator_is_supported_voltage(host->vqmmc, 1800000, 1800000))
+	} else {
 		regulator_enable(host->vqmmc);
-	else
+		if (!regulator_is_supported_voltage(host->vqmmc, 1700000,
+			1950000))
+			caps[1] &= ~(SDHCI_SUPPORT_SDR104 |
+					SDHCI_SUPPORT_SDR50 |
+					SDHCI_SUPPORT_DDR50);
+	}
+
+	if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V)
 		caps[1] &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 |
 		       SDHCI_SUPPORT_DDR50);
 
@@ -2919,21 +2933,18 @@ int sdhci_add_host(struct sdhci_host *host)
 				mmc_hostname(mmc));
 			host->vmmc = NULL;
 		}
-	} else
-		regulator_enable(host->vmmc);
+	}
 
 #ifdef CONFIG_REGULATOR
 	if (host->vmmc) {
-		ret = regulator_is_supported_voltage(host->vmmc, 3300000,
-			3300000);
+		ret = regulator_is_supported_voltage(host->vmmc, 2700000,
+			3600000);
 		if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_330)))
 			caps[0] &= ~SDHCI_CAN_VDD_330;
-		ret = regulator_is_supported_voltage(host->vmmc, 3000000,
-			3000000);
 		if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_300)))
 			caps[0] &= ~SDHCI_CAN_VDD_300;
-		ret = regulator_is_supported_voltage(host->vmmc, 1800000,
-			1800000);
+		ret = regulator_is_supported_voltage(host->vmmc, 1700000,
+			1950000);
 		if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_180)))
 			caps[0] &= ~SDHCI_CAN_VDD_180;
 	}