dma40: extract lcla code into separate function

Acked-by: Per Forlin <per.forlin@stericsson.com>
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>

1 files changed, 50 insertions, 42 deletions

diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index d9dfda2c65b..4ec96ac1e41 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -521,54 +521,62 @@ static void d40_phy_lli_load(struct d40_chan *chan, struct d40_desc *desc)
         writel(lli_dst->reg_lnk, base + D40_CHAN_REG_SDLNK);
 }
 
-static void d40_desc_load(struct d40_chan *d40c, struct d40_desc *d40d)
-{
-        int curr_lcla = -EINVAL, next_lcla;
-
-        if (chan_is_physical(d40c)) {
-                d40_phy_lli_load(d40c, d40d);
-                d40d->lli_current = d40d->lli_len;
-        } else {
-
-                if ((d40d->lli_len - d40d->lli_current) > 1)
-                        curr_lcla = d40_lcla_alloc_one(d40c, d40d);
-
-                d40_log_lli_lcpa_write(d40c->lcpa,
-                                       &d40d->lli_log.dst[d40d->lli_current],
-                                       &d40d->lli_log.src[d40d->lli_current],
-                                       curr_lcla);
-
-                d40d->lli_current++;
-                for (; d40d->lli_current < d40d->lli_len; d40d->lli_current++) {
-                        unsigned int lcla_offset = d40c->phy_chan->num * 1024 +
-                                                   8 * curr_lcla * 2;
-                        struct d40_lcla_pool *pool = &d40c->base->lcla_pool;
-                        struct d40_log_lli *lcla = pool->base + lcla_offset;
-
-                        if (d40d->lli_current + 1 < d40d->lli_len)
-                                next_lcla = d40_lcla_alloc_one(d40c, d40d);
-                        else
-                                next_lcla = -EINVAL;
-
-                        d40_log_lli_lcla_write(lcla,
-                                               &d40d->lli_log.dst[d40d->lli_current],
-                                               &d40d->lli_log.src[d40d->lli_current],
-                                               next_lcla);
+static void d40_log_lli_to_lcxa(struct d40_chan *chan, struct d40_desc *desc)
+{
+        struct d40_lcla_pool *pool = &chan->base->lcla_pool;
+        struct d40_log_lli_bidir *lli = &desc->lli_log;
+        int lli_current = desc->lli_current;
+        int lli_len = desc->lli_len;
+        int curr_lcla = -EINVAL;
+
+        if (lli_len - lli_current > 1)
+                curr_lcla = d40_lcla_alloc_one(chan, desc);
+
+        d40_log_lli_lcpa_write(chan->lcpa,
+                               &lli->dst[lli_current],
+                               &lli->src[lli_current],
+                               curr_lcla);
+
+        lli_current++;
+        for (; lli_current < lli_len; lli_current++) {
+                unsigned int lcla_offset = chan->phy_chan->num * 1024 +
+                                           8 * curr_lcla * 2;
+                struct d40_log_lli *lcla = pool->base + lcla_offset;
+                int next_lcla;
+
+                if (lli_current + 1 < lli_len)
+                        next_lcla = d40_lcla_alloc_one(chan, desc);
+                else
+                        next_lcla = -EINVAL;
 
-                        dma_sync_single_range_for_device(d40c->base->dev,
-                                                pool->dma_addr, lcla_offset,
-                                                2 * sizeof(struct d40_log_lli),
-                                                DMA_TO_DEVICE);
+                d40_log_lli_lcla_write(lcla,
+                                       &lli->dst[lli_current],
+                                       &lli->src[lli_current],
+                                       next_lcla);
 
-                        curr_lcla = next_lcla;
+                dma_sync_single_range_for_device(chan->base->dev,
+                                        pool->dma_addr, lcla_offset,
+                                        2 * sizeof(struct d40_log_lli),
+                                        DMA_TO_DEVICE);
 
-                        if (curr_lcla == -EINVAL) {
-                                d40d->lli_current++;
-                                break;
-                        }
+                curr_lcla = next_lcla;
 
+                if (curr_lcla == -EINVAL) {
+                        lli_current++;
+                        break;
                 }
         }
+
+        desc->lli_current = lli_current;
+}
+
+static void d40_desc_load(struct d40_chan *d40c, struct d40_desc *d40d)
+{
+        if (chan_is_physical(d40c)) {
+                d40_phy_lli_load(d40c, d40d);
+                d40d->lli_current = d40d->lli_len;
+        } else
+                d40_log_lli_to_lcxa(d40c, d40d);
 }
 
 static struct d40_desc *d40_first_active_get(struct d40_chan *d40c)