eSDHC host had bit eSDHC_IRQSTAT[3] to indicate that DMA (SDMA or ADMA)
transfer has failed. So enable this bit detecting and its interrupt.
Signed-off-by: Haijun Zhang <haijun.zh...@freescale.com>
---
drivers/mmc/host/sdhci-of-esdhc.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c
b/drivers/mmc/host/sdhci-of-esdhc.c
index e328252..86809c0 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -24,6 +24,9 @@
#define VENDOR_V_22 0x12
#define VENDOR_V_23 0x13
+
+#define ESDHC_INT_DMA_ERROR 0x10000000
+
static u32 esdhc_readl(struct sdhci_host *host, int reg)
{
u32 ret;
@@ -238,6 +241,21 @@ static void esdhc_of_platform_init(struct sdhci_host *host)
host->quirks &= ~SDHCI_QUIRK_NO_BUSY_IRQ;
}
+static void esdhc_get_pltfm_irq(struct sdhci_host *host, u32 *irq)
+{
+ *irq |= ESDHC_INT_DMA_ERROR;
+}
+
+static void esdhc_pltfm_irq_handler(struct sdhci_host *host, u32 intmask)
+{
+ if (intmask & (ESDHC_INT_DMA_ERROR | SDHCI_INT_ADMA_ERROR)) {
+ host->data->error = -EIO;
+ pr_err("%s: ADMA error\n", mmc_hostname(host->mmc));
+ sdhci_show_adma_error(host);
+ esdhci_of_adma_workaround(host, intmask);
+ }
+}
+
static int esdhc_pltfm_bus_width(struct sdhci_host *host, int width)
{
u32 ctrl;
@@ -273,6 +291,8 @@ static const struct sdhci_ops sdhci_esdhc_ops = {
.enable_dma = esdhc_of_enable_dma,
.get_max_clock = esdhc_of_get_max_clock,
.get_min_clock = esdhc_of_get_min_clock,
+ .get_platform_irq = esdhc_get_pltfm_irq,
+ .handle_platform_irq = esdhc_pltfm_irq_handler,
.platform_init = esdhc_of_platform_init,
#ifdef CONFIG_PM
.platform_suspend = esdhc_of_suspend,
--
1.8.0
--
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