Signed-off-by: Eric Bénard <e...@eukrea.com>
To: s.ha...@pengutronix.de
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-mmc@vger.kernel.org
---
arch/arm/plat-mxc/include/mach/mmc.h | 3 +++
drivers/mmc/host/mxcmmc.c | 16 +++++++++++++---
2 files changed, 16 insertions(+), 3 deletions(-)
diff --git a/arch/arm/plat-mxc/include/mach/mmc.h
b/arch/arm/plat-mxc/include/mach/mmc.h
index de2128d..29115f4 100644
--- a/arch/arm/plat-mxc/include/mach/mmc.h
+++ b/arch/arm/plat-mxc/include/mach/mmc.h
@@ -31,6 +31,9 @@ struct imxmmc_platform_data {
/* adjust slot voltage */
void (*setpower)(struct device *, unsigned int vdd);
+
+ /* enable card detect using DAT3 */
+ int dat3_card_detect;
};
#endif
diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c
index ec18e3b..74c87e0 100644
--- a/drivers/mmc/host/mxcmmc.c
+++ b/drivers/mmc/host/mxcmmc.c
@@ -119,6 +119,7 @@ struct mxcmci_host {
int detect_irq;
int dma;
int do_dma;
+ int default_irq_mask;
int use_sdio;
unsigned int power_mode;
struct imxmmc_platform_data *pdata;
@@ -228,7 +229,7 @@ static int mxcmci_setup_data(struct mxcmci_host *host,
struct mmc_data *data)
static int mxcmci_start_cmd(struct mxcmci_host *host, struct mmc_command *cmd,
unsigned int cmdat)
{
- u32 int_cntr;
+ u32 int_cntr = host->default_irq_mask;
unsigned long flags;
WARN_ON(host->cmd != NULL);
@@ -275,7 +276,7 @@ static int mxcmci_start_cmd(struct mxcmci_host *host,
struct mmc_command *cmd,
static void mxcmci_finish_request(struct mxcmci_host *host,
struct mmc_request *req)
{
- u32 int_cntr = 0;
+ u32 int_cntr = host->default_irq_mask;
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
@@ -585,6 +586,9 @@ static irqreturn_t mxcmci_irq(int irq, void *devid)
(stat & (STATUS_DATA_TRANS_DONE | STATUS_WRITE_OP_DONE)))
mxcmci_data_done(host, stat);
#endif
+ if (host->default_irq_mask &&
+ (stat & (STATUS_CARD_INSERTION | STATUS_CARD_REMOVAL)))
+ mmc_detect_change(host->mmc, msecs_to_jiffies(200));
return IRQ_HANDLED;
}
@@ -809,6 +813,12 @@ static int mxcmci_probe(struct platform_device *pdev)
else
mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
+ if (host->pdata && host->pdata->dat3_card_detect)
+ host->default_irq_mask =
+ INT_CARD_INSERTION_EN | INT_CARD_REMOVAL_EN;
+ else
+ host->default_irq_mask = 0;
+
host->res = r;
host->irq = irq;
@@ -835,7 +845,7 @@ static int mxcmci_probe(struct platform_device *pdev)
/* recommended in data sheet */
writew(0x2db4, host->base + MMC_REG_READ_TO);
- writel(0, host->base + MMC_REG_INT_CNTR);
+ writel(host->default_irq_mask, host->base + MMC_REG_INT_CNTR);
#ifdef HAS_DMA
host->dma = imx_dma_request_by_prio(DRIVER_NAME, DMA_PRIO_LOW);
--
1.6.3.3
--
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