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-rw-r--r--include/linux/mfd/tmio.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h
index 8e70310ee94..5a90266c3a5 100644
--- a/include/linux/mfd/tmio.h
+++ b/include/linux/mfd/tmio.h
@@ -4,6 +4,7 @@
#include <linux/fb.h>
#include <linux/io.h>
#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
#define tmio_ioread8(addr) readb(addr)
#define tmio_ioread16(addr) readw(addr)
@@ -61,6 +62,12 @@
* Some controllers can support SDIO IRQ signalling.
*/
#define TMIO_MMC_SDIO_IRQ (1 << 2)
+/*
+ * Some platforms can detect card insertion events with controller powered
+ * down, in which case they have to call tmio_mmc_cd_wakeup() to power up the
+ * controller and report the event to the driver.
+ */
+#define TMIO_MMC_HAS_COLD_CD (1 << 3)
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);
@@ -82,11 +89,21 @@ struct tmio_mmc_data {
unsigned long flags;
u32 ocr_mask; /* available voltages */
struct tmio_mmc_dma *dma;
+ struct device *dev;
+ bool power;
void (*set_pwr)(struct platform_device *host, int state);
void (*set_clk_div)(struct platform_device *host, int state);
int (*get_cd)(struct platform_device *host);
};
+static inline void tmio_mmc_cd_wakeup(struct tmio_mmc_data *pdata)
+{
+ if (pdata && !pdata->power) {
+ pdata->power = true;
+ pm_runtime_get(pdata->dev);
+ }
+}
+
/*
* data for the NAND controller
*/