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-rw-r--r--include/linux/mmc/host.h29
1 files changed, 29 insertions, 0 deletions
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 1d09562ccf7..a3ac9c48e5d 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -12,6 +12,7 @@
#include <linux/leds.h>
#include <linux/sched.h>
+#include <linux/fault-inject.h>
#include <linux/mmc/core.h>
#include <linux/mmc/pm.h>
@@ -108,6 +109,9 @@ struct mmc_host_ops {
* It is optional for the host to implement pre_req and post_req in
* order to support double buffering of requests (prepare one
* request while another request is active).
+ * pre_req() must always be followed by a post_req().
+ * To undo a call made to pre_req(), call post_req() with
+ * a nonzero err condition.
*/
void (*post_req)(struct mmc_host *host, struct mmc_request *req,
int err);
@@ -147,6 +151,7 @@ struct mmc_host_ops {
int (*execute_tuning)(struct mmc_host *host);
void (*enable_preset_value)(struct mmc_host *host, bool enable);
int (*select_drive_strength)(unsigned int max_dtr, int host_drv, int card_drv);
+ void (*hw_reset)(struct mmc_host *host);
};
struct mmc_card;
@@ -229,8 +234,20 @@ struct mmc_host {
#define MMC_CAP_MAX_CURRENT_600 (1 << 28) /* Host max current limit is 600mA */
#define MMC_CAP_MAX_CURRENT_800 (1 << 29) /* Host max current limit is 800mA */
#define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */
+#define MMC_CAP_HW_RESET (1 << 31) /* Hardware reset */
+
+ unsigned int caps2; /* More host capabilities */
+
+#define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */
+#define MMC_CAP2_CACHE_CTRL (1 << 1) /* Allow cache control */
+#define MMC_CAP2_POWEROFF_NOTIFY (1 << 2) /* Notify poweroff supported */
+#define MMC_CAP2_NO_MULTI_READ (1 << 3) /* Multiblock reads don't work */
mmc_pm_flag_t pm_caps; /* supported pm features */
+ unsigned int power_notify_type;
+#define MMC_HOST_PW_NOTIFY_NONE 0
+#define MMC_HOST_PW_NOTIFY_SHORT 1
+#define MMC_HOST_PW_NOTIFY_LONG 2
#ifdef CONFIG_MMC_CLKGATE
int clk_requests; /* internal reference counter */
@@ -302,6 +319,10 @@ struct mmc_host {
struct mmc_async_req *areq; /* active async req */
+#ifdef CONFIG_FAIL_MMC_REQUEST
+ struct fault_attr fail_mmc_request;
+#endif
+
unsigned long private[0] ____cacheline_aligned;
};
@@ -330,6 +351,8 @@ extern int mmc_power_restore_host(struct mmc_host *host);
extern void mmc_detect_change(struct mmc_host *, unsigned long delay);
extern void mmc_request_done(struct mmc_host *, struct mmc_request *);
+extern int mmc_cache_ctrl(struct mmc_host *, u8);
+
static inline void mmc_signal_sdio_irq(struct mmc_host *host)
{
host->ops->enable_sdio_irq(host, 0);
@@ -394,4 +417,10 @@ static inline int mmc_host_cmd23(struct mmc_host *host)
{
return host->caps & MMC_CAP_CMD23;
}
+
+static inline int mmc_boot_partition_access(struct mmc_host *host)
+{
+ return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC);
+}
+
#endif /* LINUX_MMC_HOST_H */