On some platforms (e.g. AP4EVB) the card detect pin of a slot is not directly
connected to the sdhi hardware, so that polling needs to be used with tmio_mmc
and card detection is handled in the platform code.
This patch allows to set tmio_mmc capabilities (to pass the MMC_CAP_NEEDS_POLL
flag) and exposes a get_cd hook for that purpose.
Signed-off-by: Arnd Hannemann <arnd@xxxxxxxxxx>
---
drivers/mfd/sh_mobile_sdhi.c | 13 +++++++++++++
include/linux/mfd/sh_mobile_sdhi.h | 2 ++
2 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/drivers/mfd/sh_mobile_sdhi.c b/drivers/mfd/sh_mobile_sdhi.c
index cd16459..7c23630 100644
--- a/drivers/mfd/sh_mobile_sdhi.c
+++ b/drivers/mfd/sh_mobile_sdhi.c
@@ -65,6 +65,17 @@ static void sh_mobile_sdhi_set_pwr(struct platform_device *tmio, int state)
p->set_pwr(pdev, state);
}
+static int sh_mobile_sdhi_get_cd(struct platform_device *tmio)
+{
+ struct platform_device *pdev = to_platform_device(tmio->dev.parent);
+ struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
+
+ if (p && p->get_cd)
+ return p->get_cd(pdev);
+ else
+ return -ENOSYS;
+}
+
static int __init sh_mobile_sdhi_probe(struct platform_device *pdev)
{
struct sh_mobile_sdhi *priv;
@@ -106,10 +117,12 @@ static int __init sh_mobile_sdhi_probe(struct platform_device *pdev)
mmc_data->hclk = clk_get_rate(priv->clk);
mmc_data->set_pwr = sh_mobile_sdhi_set_pwr;
+ mmc_data->get_cd = sh_mobile_sdhi_get_cd;
mmc_data->capabilities = MMC_CAP_MMC_HIGHSPEED;
if (p) {
mmc_data->flags = p->tmio_flags;
mmc_data->ocr_mask = p->tmio_ocr_mask;
+ mmc_data->capabilities |= p->tmio_caps;
}
if (p && p->dma_slave_tx >= 0 && p->dma_slave_rx >= 0) {
diff --git a/include/linux/mfd/sh_mobile_sdhi.h b/include/linux/mfd/sh_mobile_sdhi.h
index 4906780..c981b95 100644
--- a/include/linux/mfd/sh_mobile_sdhi.h
+++ b/include/linux/mfd/sh_mobile_sdhi.h
@@ -7,8 +7,10 @@ struct sh_mobile_sdhi_info {
int dma_slave_tx;
int dma_slave_rx;
unsigned long tmio_flags;
+ unsigned long tmio_caps;
u32 tmio_ocr_mask; /* available MMC voltages */
void (*set_pwr)(struct platform_device *pdev, int state);
+ int (*get_cd)(struct platform_device *pdev);
};
#endif /* __SH_MOBILE_SDHI_H__ */
--
1.7.0.4
--
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