From: Shinobu Uehara <shinobu.uehara.xc@xxxxxxxxxxx>
Renesas R-Car SDHI should set reserved bits
on CTL_SDIO_STATUS register when writing.
This patch adds new TMIO_MMC_SDIO_STATUS_QUIRK flags
for this purpose
[Kuninori Morimoto: tidyuped for upstreaming
enabled this flags for all SH-Mobile/R-Car]
Signed-off-by: Shinobu Uehara <shinobu.uehara.xc@xxxxxxxxxxx>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
---
drivers/mmc/host/sh_mobile_sdhi.c | 5 +++++
drivers/mmc/host/tmio_mmc_pio.c | 7 ++++++-
include/linux/mfd/tmio.h | 5 +++++
3 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c
index 1d54b78..ad00fb8 100644
--- a/drivers/mmc/host/sh_mobile_sdhi.c
+++ b/drivers/mmc/host/sh_mobile_sdhi.c
@@ -230,6 +230,11 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
*/
mmc_data->flags |= TMIO_MMC_HAVE_CMD12_CTRL;
+ /*
+ * All SDHI need SDIO_INFO1 reserved bit
+ */
+ mmc_data->flags |= TMIO_MMC_SDIO_STATUS_QUIRK;
+
if (of_id && of_id->data) {
const struct sh_mobile_sdhi_of_data *of_data = of_id->data;
mmc_data->flags |= of_data->tmio_flags;
diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c
index 1f1fdfb..e51a993 100644
--- a/drivers/mmc/host/tmio_mmc_pio.c
+++ b/drivers/mmc/host/tmio_mmc_pio.c
@@ -650,6 +650,7 @@ irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid)
struct mmc_host *mmc = host->mmc;
struct tmio_mmc_data *pdata = host->pdata;
unsigned int ireg, status;
+ unsigned int sdio_status;
if (!(pdata->flags & TMIO_MMC_SDIO_IRQ))
return IRQ_HANDLED;
@@ -657,7 +658,11 @@ irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid)
status = sd_ctrl_read16(host, CTL_SDIO_STATUS);
ireg = status & TMIO_SDIO_MASK_ALL & ~host->sdcard_irq_mask;
- sd_ctrl_write16(host, CTL_SDIO_STATUS, status & ~TMIO_SDIO_MASK_ALL);
+ sdio_status = status & ~TMIO_SDIO_MASK_ALL;
+ if (pdata->flags & TMIO_MMC_SDIO_STATUS_QUIRK)
+ sdio_status |= 6;
+
+ sd_ctrl_write16(host, CTL_SDIO_STATUS, sdio_status);
if (mmc->caps & MMC_CAP_SDIO_IRQ && ireg & TMIO_SDIO_STAT_IOIRQ)
mmc_signal_sdio_irq(mmc);
diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h
index 7432d95..a7493ae 100644
--- a/include/linux/mfd/tmio.h
+++ b/include/linux/mfd/tmio.h
@@ -89,6 +89,11 @@
*/
#define TMIO_MMC_HAVE_CMD12_CTRL (1 << 7)
+/*
+ * Some controllers needs to set 1 on SDIO status reserved bits
+ */
+#define TMIO_MMC_SDIO_STATUS_QUIRK (1 << 8)
+
int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base);
int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base);
void tmio_core_mmc_pwr(void __iomem *cnf, int shift, int state);
--
1.7.9.5
--
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