aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorRabin Vincent <rabin.vincent@stericsson.com>2010-10-12 13:00:49 +0000
committerDan Williams <dan.j.williams@intel.com>2010-10-19 15:17:06 -0700
commitce2ca1252ba8688a4997b4104793540f4c28c0d8 (patch)
tree137b6098794fbb4270cc9c65936c89ff70ec7661
parent9646b7985e906e5fcea9375f016b4519c8318c21 (diff)
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>
-rw-r--r--drivers/dma/ste_dma40.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 662d7e35f86..7bc535ee0a0 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,