diff options
| author | Daniel Mack <zonque@gmail.com> | 2013-08-10 18:52:15 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2013-08-14 13:55:15 +0530 |
| commit | 8b298ded902a96cf434738d2a1d83f4a768362ea (patch) | |
| tree | a3c5c92c8e0fbf98ac62a680a82d8e838fbe742f /drivers/dma | |
| parent | aab81e47f58ea13f8bf7c1046670dd80566b1040 (diff) | |
| download | op-kernel-dev-8b298ded902a96cf434738d2a1d83f4a768362ea.zip op-kernel-dev-8b298ded902a96cf434738d2a1d83f4a768362ea.tar.gz | |
dma: mmp_pdma: factor out DRCMR register calculation
The exact same calculation is done twice, so let's factor it out to a
macro.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/mmp_pdma.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c index 3bf9c91..b061e26 100644 --- a/drivers/dma/mmp_pdma.c +++ b/drivers/dma/mmp_pdma.c @@ -47,6 +47,8 @@ #define DCSR_CMPST (1 << 10) /* The Descriptor Compare Status */ #define DCSR_EORINTR (1 << 9) /* The end of Receive */ +#define DRCMR(n) ((((n) < 64) ? 0x0100 : 0x1100) + \ + (((n) & 0x3f) << 2)) #define DRCMR_MAPVLD (1 << 7) /* Map Valid (read / write) */ #define DRCMR_CHLNUM 0x1f /* mask for Channel Number (read / write) */ @@ -143,8 +145,7 @@ static void enable_chan(struct mmp_pdma_phy *phy) if (!phy->vchan) return; - reg = phy->vchan->drcmr; - reg = (((reg) < 64) ? 0x0100 : 0x1100) + (((reg) & 0x3f) << 2); + reg = DRCMR(phy->vchan->drcmr); writel(DRCMR_MAPVLD | phy->idx, phy->base + reg); reg = (phy->idx << 2) + DCSR; @@ -258,8 +259,7 @@ static void mmp_pdma_free_phy(struct mmp_pdma_chan *pchan) return; /* clear the channel mapping in DRCMR */ - reg = pchan->phy->vchan->drcmr; - reg = ((reg < 64) ? 0x0100 : 0x1100) + ((reg & 0x3f) << 2); + reg = DRCMR(pchan->phy->vchan->drcmr); writel(0, pchan->phy->base + reg); spin_lock_irqsave(&pdev->phy_lock, flags); |
