dmaengine: PL08x: convert to use virt-dma structs

Convert PL08x to use the virt-dma structures.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 29 insertions, 28 deletions

diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index bbae30ceb8fb..9a0642805b82 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -86,6 +86,7 @@
 #include <asm/hardware/pl080.h>
 
 #include "dmaengine.h"
+#include "virt-dma.h"
 
 #define DRIVER_NAME     "pl08xdmac"
 
@@ -165,7 +166,7 @@ struct pl08x_sg {
 
 /**
  * struct pl08x_txd - wrapper for struct dma_async_tx_descriptor
- * @tx: async tx descriptor
+ * @vd: virtual DMA descriptor
  * @node: node for txd list for channels
  * @dsg_list: list of children sg's
  * @llis_bus: DMA memory address (physical) start for the LLIs
@@ -174,7 +175,7 @@ struct pl08x_sg {
  * @ccfg: config reg values for current txd
  */
 struct pl08x_txd {
-        struct dma_async_tx_descriptor tx;
+        struct virt_dma_desc vd;
         struct list_head node;
         struct list_head dsg_list;
         dma_addr_t llis_bus;
@@ -208,7 +209,7 @@ enum pl08x_dma_chan_state {
 
 /**
  * struct pl08x_dma_chan - this structure wraps a DMA ENGINE channel
- * @chan: wrappped abstract channel
+ * @vc: wrappped virtual channel
  * @phychan: the physical channel utilized by this channel, if there is one
  * @tasklet: tasklet scheduled by the IRQ to handle actual work etc
  * @name: name of channel
@@ -226,7 +227,7 @@ enum pl08x_dma_chan_state {
  * @mux_use: count of descriptors using this DMA request signal setting
  */
 struct pl08x_dma_chan {
-        struct dma_chan chan;
+        struct virt_dma_chan vc;
         struct pl08x_phy_chan *phychan;
         struct tasklet_struct tasklet;
         const char *name;
@@ -287,12 +288,12 @@ struct pl08x_driver_data {
 
 static inline struct pl08x_dma_chan *to_pl08x_chan(struct dma_chan *chan)
 {
-        return container_of(chan, struct pl08x_dma_chan, chan);
+        return container_of(chan, struct pl08x_dma_chan, vc.chan);
 }
 
 static inline struct pl08x_txd *to_pl08x_txd(struct dma_async_tx_descriptor *tx)
 {
-        return container_of(tx, struct pl08x_txd, tx);
+        return container_of(tx, struct pl08x_txd, vd.tx);
 }
 
 /*
@@ -648,14 +649,14 @@ static void pl08x_phy_free(struct pl08x_dma_chan *plchan)
         next = NULL;
 
         /* Find a waiting virtual channel for the next transfer. */
-        list_for_each_entry(p, &pl08x->memcpy.channels, chan.device_node)
+        list_for_each_entry(p, &pl08x->memcpy.channels, vc.chan.device_node)
                 if (p->state == PL08X_CHAN_WAITING) {
                         next = p;
                         break;
                 }
 
         if (!next) {
-                list_for_each_entry(p, &pl08x->slave.channels, chan.device_node)
+                list_for_each_entry(p, &pl08x->slave.channels, vc.chan.device_node)
                         if (p->state == PL08X_CHAN_WAITING) {
                                 next = p;
                                 break;
@@ -1351,9 +1352,9 @@ static struct pl08x_txd *pl08x_get_txd(struct pl08x_dma_chan *plchan,
         struct pl08x_txd *txd = kzalloc(sizeof(*txd), GFP_NOWAIT);
 
         if (txd) {
-                dma_async_tx_descriptor_init(&txd->tx, &plchan->chan);
-                txd->tx.flags = flags;
-                txd->tx.tx_submit = pl08x_tx_submit;
+                dma_async_tx_descriptor_init(&txd->vd.tx, &plchan->vc.chan);
+                txd->vd.tx.flags = flags;
+                txd->vd.tx.tx_submit = pl08x_tx_submit;
                 INIT_LIST_HEAD(&txd->node);
                 INIT_LIST_HEAD(&txd->dsg_list);
 
@@ -1413,7 +1414,7 @@ static struct dma_async_tx_descriptor *pl08x_prep_dma_memcpy(
         if (ret)
                 return NULL;
 
-        return &txd->tx;
+        return &txd->vd.tx;
 }
 
 static struct dma_async_tx_descriptor *pl08x_prep_slave_sg(
@@ -1529,7 +1530,7 @@ static struct dma_async_tx_descriptor *pl08x_prep_slave_sg(
         if (ret)
                 return NULL;
 
-        return &txd->tx;
+        return &txd->vd.tx;
 }
 
 static int pl08x_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
@@ -1630,11 +1631,11 @@ static void pl08x_ensure_on(struct pl08x_driver_data *pl08x)
 
 static void pl08x_unmap_buffers(struct pl08x_txd *txd)
 {
-        struct device *dev = txd->tx.chan->device->dev;
+        struct device *dev = txd->vd.tx.chan->device->dev;
         struct pl08x_sg *dsg;
 
-        if (!(txd->tx.flags & DMA_COMPL_SKIP_SRC_UNMAP)) {
-                if (txd->tx.flags & DMA_COMPL_SRC_UNMAP_SINGLE)
+        if (!(txd->vd.tx.flags & DMA_COMPL_SKIP_SRC_UNMAP)) {
+                if (txd->vd.tx.flags & DMA_COMPL_SRC_UNMAP_SINGLE)
                         list_for_each_entry(dsg, &txd->dsg_list, node)
                                 dma_unmap_single(dev, dsg->src_addr, dsg->len,
                                                 DMA_TO_DEVICE);
@@ -1644,8 +1645,8 @@ static void pl08x_unmap_buffers(struct pl08x_txd *txd)
                                                 DMA_TO_DEVICE);
                 }
         }
-        if (!(txd->tx.flags & DMA_COMPL_SKIP_DEST_UNMAP)) {
-                if (txd->tx.flags & DMA_COMPL_DEST_UNMAP_SINGLE)
+        if (!(txd->vd.tx.flags & DMA_COMPL_SKIP_DEST_UNMAP)) {
+                if (txd->vd.tx.flags & DMA_COMPL_DEST_UNMAP_SINGLE)
                         list_for_each_entry(dsg, &txd->dsg_list, node)
                                 dma_unmap_single(dev, dsg->dst_addr, dsg->len,
                                                 DMA_FROM_DEVICE);
@@ -1670,8 +1671,8 @@ static void pl08x_tasklet(unsigned long data)
         while (!list_empty(&head)) {
                 struct pl08x_txd *txd = list_first_entry(&head,
                                                 struct pl08x_txd, node);
-                dma_async_tx_callback callback = txd->tx.callback;
-                void *callback_param = txd->tx.callback_param;
+                dma_async_tx_callback callback = txd->vd.tx.callback;
+                void *callback_param = txd->vd.tx.callback_param;
 
                 list_del(&txd->node);
 
@@ -1732,7 +1733,7 @@ static irqreturn_t pl08x_irq(int irq, void *dev)
                                  * reservation.
                                  */
                                 pl08x_release_mux(plchan);
-                                dma_cookie_complete(&tx->tx);
+                                dma_cookie_complete(&tx->vd.tx);
                                 list_add_tail(&tx->node, &plchan->done_list);
 
                                 /*
@@ -1807,8 +1808,8 @@ static int pl08x_dma_init_virtual_channels(struct pl08x_driver_data *pl08x,
                          "initialize virtual channel \"%s\"\n",
                          chan->name);
 
-                chan->chan.device = dmadev;
-                dma_cookie_init(&chan->chan);
+                chan->vc.chan.device = dmadev;
+                dma_cookie_init(&chan->vc.chan);
 
                 spin_lock_init(&chan->lock);
                 INIT_LIST_HEAD(&chan->pend_list);
@@ -1817,7 +1818,7 @@ static int pl08x_dma_init_virtual_channels(struct pl08x_driver_data *pl08x,
                 tasklet_init(&chan->tasklet, pl08x_tasklet,
                              (unsigned long) chan);
 
-                list_add_tail(&chan->chan.device_node, &dmadev->channels);
+                list_add_tail(&chan->vc.chan.device_node, &dmadev->channels);
         }
         dev_info(&pl08x->adev->dev, "initialized %d virtual %s channels\n",
                  i, slave ? "slave" : "memcpy");
@@ -1830,8 +1831,8 @@ static void pl08x_free_virtual_channels(struct dma_device *dmadev)
         struct pl08x_dma_chan *next;
 
         list_for_each_entry_safe(chan,
-                                 next, &dmadev->channels, chan.device_node) {
-                list_del(&chan->chan.device_node);
+                                 next, &dmadev->channels, vc.chan.device_node) {
+                list_del(&chan->vc.chan.device_node);
                 kfree(chan);
         }
 }
@@ -1884,7 +1885,7 @@ static int pl08x_debugfs_show(struct seq_file *s, void *data)
         seq_printf(s, "\nPL08x virtual memcpy channels:\n");
         seq_printf(s, "CHANNEL:\tSTATE:\n");
         seq_printf(s, "--------\t------\n");
-        list_for_each_entry(chan, &pl08x->memcpy.channels, chan.device_node) {
+        list_for_each_entry(chan, &pl08x->memcpy.channels, vc.chan.device_node) {
                 seq_printf(s, "%s\t\t%s\n", chan->name,
                            pl08x_state_str(chan->state));
         }
@@ -1892,7 +1893,7 @@ static int pl08x_debugfs_show(struct seq_file *s, void *data)
         seq_printf(s, "\nPL08x virtual slave channels:\n");
         seq_printf(s, "CHANNEL:\tSTATE:\n");
         seq_printf(s, "--------\t------\n");
-        list_for_each_entry(chan, &pl08x->slave.channels, chan.device_node) {
+        list_for_each_entry(chan, &pl08x->slave.channels, vc.chan.device_node) {
                 seq_printf(s, "%s\t\t%s\n", chan->name,
                            pl08x_state_str(chan->state));
         }