diff mbox series

[v2,5/8] mmc: sdhci: Add quirk for disabling DTO during erase command

Message ID 20190215192033.24203-6-faiz_abbas@ti.com (mailing list archive)
State New, archived
Headers show
Series Port am335 and am437 devices to sdhci-omap | expand

Commit Message

Faiz Abbas Feb. 15, 2019, 7:20 p.m. UTC 
Some controllers might prematurely issue a data timeout during an erase
command. Add a quirk to disable the interrupt when an erase command is
issued.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
---
 drivers/mmc/host/sdhci.c | 5 +++++
 drivers/mmc/host/sdhci.h | 2 ++
 2 files changed, 7 insertions(+)
diff mbox series

Patch

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 2f5f64efad16..608f7306742c 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1522,6 +1522,11 @@  void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
 	/* Initially, a command has no error */
 	cmd->error = 0;
 
+	if (cmd->opcode == MMC_ERASE &&
+	    (host->quirks2 & SDHCI_QUIRK2_DISABLE_DTO_FOR_ERASE)) {
+		sdhci_set_data_timeout_irq(host, false);
+	}
+
 	if ((host->quirks2 & SDHCI_QUIRK2_STOP_WITH_TC) &&
 	    cmd->opcode == MMC_STOP_TRANSMISSION)
 		cmd->flags |= MMC_RSP_BUSY;
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 6ff3e29791ee..60282721f827 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -479,6 +479,8 @@  struct sdhci_host {
  * block count.
  */
 #define SDHCI_QUIRK2_USE_32BIT_BLK_CNT			(1<<18)
+/* Controller needs to disable DTO for erase command */
+#define SDHCI_QUIRK2_DISABLE_DTO_FOR_ERASE		(1<<19)
 
 	int irq;		/* Device IRQ */
 	void __iomem *ioaddr;	/* Mapped address */