diff options
| author | Tony Lindgren <tony@atomide.com> | 2016-08-20 01:59:39 +0300 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2016-08-31 07:52:19 +0300 |
| commit | 670fc2a87013c3733868094c3ea115250398f2ea (patch) | |
| tree | f82ba57d6020f215aaf1a6160233ee8e6b0f303e /drivers/dma/cppi41.c | |
| parent | 29b4817d4018df78086157ea3a55c1d9424a7cfc (diff) | |
| download | linux-670fc2a87013c3733868094c3ea115250398f2ea.tar.xz | |
dmaengine: cppi41: Prepare to add PM runtime support
Let's just move code from cppi41_dma_issue_pending() to
push_desc_queue() as that's the only call to push_desc_queue().
We want to do this for PM runtime as we need to call push_desc_queue()
also for pending queued transfers from PM runtime resume.
No functional changes, just moves code around.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/cppi41.c')
| -rw-r--r-- | drivers/dma/cppi41.c | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/drivers/dma/cppi41.c b/drivers/dma/cppi41.c index 4b2317426c8e..cf0415e5687b 100644 --- a/drivers/dma/cppi41.c +++ b/drivers/dma/cppi41.c @@ -386,21 +386,6 @@ static void push_desc_queue(struct cppi41_channel *c) u32 desc_phys; u32 reg; - desc_phys = lower_32_bits(c->desc_phys); - desc_num = (desc_phys - cdd->descs_phys) / sizeof(struct cppi41_desc); - WARN_ON(cdd->chan_busy[desc_num]); - cdd->chan_busy[desc_num] = c; - - reg = (sizeof(struct cppi41_desc) - 24) / 4; - reg |= desc_phys; - cppi_writel(reg, cdd->qmgr_mem + QMGR_QUEUE_D(c->q_num)); -} - -static void cppi41_dma_issue_pending(struct dma_chan *chan) -{ - struct cppi41_channel *c = to_cpp41_chan(chan); - u32 reg; - c->residue = 0; reg = GCR_CHAN_ENABLE; @@ -418,6 +403,21 @@ static void cppi41_dma_issue_pending(struct dma_chan *chan) * before starting the dma engine. */ __iowmb(); + + desc_phys = lower_32_bits(c->desc_phys); + desc_num = (desc_phys - cdd->descs_phys) / sizeof(struct cppi41_desc); + WARN_ON(cdd->chan_busy[desc_num]); + cdd->chan_busy[desc_num] = c; + + reg = (sizeof(struct cppi41_desc) - 24) / 4; + reg |= desc_phys; + cppi_writel(reg, cdd->qmgr_mem + QMGR_QUEUE_D(c->q_num)); +} + +static void cppi41_dma_issue_pending(struct dma_chan *chan) +{ + struct cppi41_channel *c = to_cpp41_chan(chan); + push_desc_queue(c); } |