diff options
Diffstat (limited to 'drivers/mmc/host/tmio_mmc.h')
| -rw-r--r-- | drivers/mmc/host/tmio_mmc.h | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h index d857f5c6e7d9..86fd21e00099 100644 --- a/drivers/mmc/host/tmio_mmc.h +++ b/drivers/mmc/host/tmio_mmc.h @@ -40,6 +40,22 @@ struct tmio_mmc_data; +/* + * We differentiate between the following 3 power states: + * 1. card slot powered off, controller stopped. This is used, when either there + * is no card in the slot, or the card really has to be powered down. + * 2. card slot powered on, controller stopped. This is used, when a card is in + * the slot, but no activity is currently taking place. This is a power- + * saving mode with card-state preserved. This state can be entered, e.g. + * when MMC clock-gating is used. + * 3. card slot powered on, controller running. This is the actual active state. + */ +enum tmio_mmc_power { + TMIO_MMC_OFF_STOP, /* card power off, controller stopped */ + TMIO_MMC_ON_STOP, /* card power on, controller stopped */ + TMIO_MMC_ON_RUN, /* card power on, controller running */ +}; + struct tmio_mmc_host { void __iomem *ctl; unsigned long bus_shift; @@ -48,8 +64,8 @@ struct tmio_mmc_host { struct mmc_data *data; struct mmc_host *mmc; - /* Controller power state */ - bool power; + /* Controller and card power state */ + enum tmio_mmc_power power; /* Callbacks for clock / power control */ void (*set_pwr)(struct platform_device *host, int state); @@ -85,6 +101,7 @@ struct tmio_mmc_host { unsigned long last_req_ts; struct mutex ios_lock; /* protect set_ios() context */ bool native_hotplug; + bool resuming; }; int tmio_mmc_host_probe(struct tmio_mmc_host **host, |