diff options
| author | Jonas Aaberg <jonas.aberg@stericsson.com> | 2010-08-09 12:07:44 +0000 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2010-09-22 14:53:44 -0700 |
| commit | be8cb7dfd92420b12dfd6831c2d638f4f46bdfdf (patch) | |
| tree | 2a9fa34d9d37543653f86d523bcbd1b89c0a559a /drivers/dma | |
| parent | 0747c7bae5c93377f4ea81b55d6851eaddc677fe (diff) | |
DMAENGINE: ste_dma40: Fix failed to restart logical channel bug
A transfer that runs in the different direction on the same
channel will now be resumed when the other is suspend/stopped.
Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/ste_dma40.c | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index df2e1a30ee7..8aff8659414 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -640,19 +640,15 @@ static void d40_config_set_event(struct d40_chan *d40c, bool do_enable) static u32 d40_chan_has_events(struct d40_chan *d40c) { - u32 val = 0; + u32 val; - /* If SSLNK or SDLNK is zero all events are disabled */ - if ((d40c->dma_cfg.dir == STEDMA40_PERIPH_TO_MEM) || - (d40c->dma_cfg.dir == STEDMA40_PERIPH_TO_PERIPH)) - val = readl(d40c->base->virtbase + D40_DREG_PCBASE + - d40c->phy_chan->num * D40_DREG_PCDELTA + - D40_CHAN_REG_SSLNK); - - if (d40c->dma_cfg.dir != STEDMA40_PERIPH_TO_MEM) - val = readl(d40c->base->virtbase + D40_DREG_PCBASE + - d40c->phy_chan->num * D40_DREG_PCDELTA + - D40_CHAN_REG_SDLNK); + val = readl(d40c->base->virtbase + D40_DREG_PCBASE + + d40c->phy_chan->num * D40_DREG_PCDELTA + + D40_CHAN_REG_SSLNK); + + val |= readl(d40c->base->virtbase + D40_DREG_PCBASE + + d40c->phy_chan->num * D40_DREG_PCDELTA + + D40_CHAN_REG_SDLNK); return val; } |