diff options
Diffstat (limited to 'drivers/dma/fsldma.h')
| -rw-r--r-- | drivers/dma/fsldma.h | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/drivers/dma/fsldma.h b/drivers/dma/fsldma.h index d56e83599825..239c20c84382 100644 --- a/drivers/dma/fsldma.h +++ b/drivers/dma/fsldma.h @@ -134,12 +134,36 @@ struct fsldma_device { #define FSL_DMA_CHAN_PAUSE_EXT 0x00001000 #define FSL_DMA_CHAN_START_EXT 0x00002000 +#ifdef CONFIG_PM +struct fsldma_chan_regs_save { + u32 mr; +}; + +enum fsldma_pm_state { + RUNNING = 0, + SUSPENDED, +}; +#endif + struct fsldma_chan { char name[8]; /* Channel name */ struct fsldma_chan_regs __iomem *regs; spinlock_t desc_lock; /* Descriptor operation lock */ - struct list_head ld_pending; /* Link descriptors queue */ - struct list_head ld_running; /* Link descriptors queue */ + /* + * Descriptors which are queued to run, but have not yet been + * submitted to the hardware for execution + */ + struct list_head ld_pending; + /* + * Descriptors which are currently being executed by the hardware + */ + struct list_head ld_running; + /* + * Descriptors which have finished execution by the hardware. These + * descriptors have already had their cleanup actions run. They are + * waiting for the ACK bit to be set by the async_tx API. + */ + struct list_head ld_completed; /* Link descriptors queue */ struct dma_chan common; /* DMA common channel */ struct dma_pool *desc_pool; /* Descriptors pool */ struct device *dev; /* Channel device */ @@ -148,6 +172,10 @@ struct fsldma_chan { struct tasklet_struct tasklet; u32 feature; bool idle; /* DMA controller is idle */ +#ifdef CONFIG_PM + struct fsldma_chan_regs_save regs_save; + enum fsldma_pm_state pm_state; +#endif void (*toggle_ext_pause)(struct fsldma_chan *fsl_chan, int enable); void (*toggle_ext_start)(struct fsldma_chan *fsl_chan, int enable); |