diff options
| author | Rabin Vincent <rabin.vincent@stericsson.com> | 2010-10-12 15:00:49 +0200 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2010-10-20 00:17:06 +0200 |
| commit | ce2ca1252ba8688a4997b4104793540f4c28c0d8 (patch) | |
| tree | 137b6098794fbb4270cc9c65936c89ff70ec7661 /drivers/dma | |
| parent | DMAENGINE: define a dummy filter function for ste_dma40 (diff) | |
| download | linux-ce2ca1252ba8688a4997b4104793540f4c28c0d8.tar.xz linux-ce2ca1252ba8688a4997b4104793540f4c28c0d8.zip | |
ste_dma40: add variable to indicate valid dma_cfg
Since we want to reduce the amount of required channel
configuration and remove channel_type, don't depend on it
to indicate whether the configuration is valid.
Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@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 | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 662d7e35f862..7bc535ee0a08 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -175,6 +175,7 @@ struct d40_base; * @active: Active descriptor. * @queue: Queued jobs. * @dma_cfg: The client configuration of this dma channel. + * @configured: whether the dma_cfg configuration is valid * @base: Pointer to the device instance struct. * @src_def_cfg: Default cfg register setting for src. * @dst_def_cfg: Default cfg register setting for dst. @@ -198,6 +199,7 @@ struct d40_chan { struct list_head active; struct list_head queue; struct stedma40_chan_cfg dma_cfg; + bool configured; struct d40_base *base; /* Default register configurations */ u32 src_def_cfg; @@ -1518,8 +1520,7 @@ static int d40_free_dma(struct d40_chan *d40c) return res; } d40c->phy_chan = NULL; - /* Invalidate channel type */ - d40c->dma_cfg.channel_type = 0; + d40c->configured = false; d40c->base->lookup_phy_chans[phy->num] = NULL; return 0; @@ -1704,6 +1705,9 @@ bool stedma40_filter(struct dma_chan *chan, void *data) } else err = d40_config_memcpy(d40c); + if (!err) + d40c->configured = true; + return err == 0; } EXPORT_SYMBOL(stedma40_filter); @@ -1720,12 +1724,8 @@ static int d40_alloc_chan_resources(struct dma_chan *chan) d40c->completed = chan->cookie = 1; - /* - * If no dma configuration is set (channel_type == 0) - * use default configuration (memcpy) - */ - if (d40c->dma_cfg.channel_type == 0) { - + /* If no dma configuration is set use default configuration (memcpy) */ + if (!d40c->configured) { err = d40_config_memcpy(d40c); if (err) { dev_err(&d40c->chan.dev->device, |