[PATCH v3 19/59] dmaengine: edma: Split device_control

Maxime Ripard
2014-10-22T16:06:55Z

Split the device_control callback of the TI EDMA driver to make use of the
newly introduced callbacks, that will eventually be used to retrieve slave
capabilities.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
---
drivers/dma/edma.c | 50 +++++++++++++++-----------------------------------
1 file changed, 15 insertions(+), 35 deletions(-)

diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c
index 790054eef76c..56735a0aa3a8 100644
--- a/drivers/dma/edma.c
+++ b/drivers/dma/edma.c
@@ -244,8 +244,9 @@ static void edma_execute(struct edma_chan *echan)
}
}

-static int edma_terminate_all(struct edma_chan *echan)
+static int edma_terminate_all(struct dma_chan *chan)
{
+ struct edma_chan *echan = to_edma_chan(chan);
unsigned long flags;
LIST_HEAD(head);

@@ -273,9 +274,11 @@ static int edma_terminate_all(struct edma_chan *echan)
return 0;
}

-static int edma_slave_config(struct edma_chan *echan,
+static int edma_slave_config(struct dma_chan *chan,
struct dma_slave_config *cfg)
{
+ struct edma_chan *echan = to_edma_chan(chan);
+
if (cfg->src_addr_width == DMA_SLAVE_BUSWIDTH_8_BYTES ||
cfg->dst_addr_width == DMA_SLAVE_BUSWIDTH_8_BYTES)
return -EINVAL;
@@ -285,8 +288,10 @@ static int edma_slave_config(struct edma_chan *echan,
return 0;
}

-static int edma_dma_pause(struct edma_chan *echan)
+static int edma_dma_pause(struct dma_chan *chan)
{
+ struct edma_chan *echan = to_edma_chan(chan);
+
/* Pause/Resume only allowed with cyclic mode */
if (!echan->edesc || !echan->edesc->cyclic)
return -EINVAL;
@@ -295,8 +300,10 @@ static int edma_dma_pause(struct edma_chan *echan)
return 0;
}

-static int edma_dma_resume(struct edma_chan *echan)
+static int edma_dma_resume(struct dma_chan *chan)
{
+ struct edma_chan *echan = to_edma_chan(chan);
+
/* Pause/Resume only allowed with cyclic mode */
if (!echan->edesc->cyclic)
return -EINVAL;
@@ -305,36 +312,6 @@ static int edma_dma_resume(struct edma_chan *echan)
return 0;
}

-static int edma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
- unsigned long arg)
-{
- int ret = 0;
- struct dma_slave_config *config;
- struct edma_chan *echan = to_edma_chan(chan);
-
- switch (cmd) {
- case DMA_TERMINATE_ALL:
- edma_terminate_all(echan);
- break;
- case DMA_SLAVE_CONFIG:
- config = (struct dma_slave_config *)arg;
- ret = edma_slave_config(echan, config);
- break;
- case DMA_PAUSE:
- ret = edma_dma_pause(echan);
- break;
-
- case DMA_RESUME:
- ret = edma_dma_resume(echan);
- break;
-
- default:
- ret = -ENOSYS;
- }
-
- return ret;
-}
-
/*
* A PaRAM set configuration abstraction used by other modes
* @chan: Channel who's PaRAM set we're configuring
@@ -1017,7 +994,10 @@ static void edma_dma_init(struct edma_cc *ecc, struct dma_device *dma,
dma->device_free_chan_resources = edma_free_chan_resources;
dma->device_issue_pending = edma_issue_pending;
dma->device_tx_status = edma_tx_status;
- dma->device_control = edma_control;
+ dma->device_config = edma_slave_config;
+ dma->device_pause = edma_dma_pause;
+ dma->device_resume = edma_dma_resume;
+ dma->device_terminate_all = edma_terminate_all;
dma->device_slave_caps = edma_dma_device_slave_caps;
dma->dev = dev;

--
2.1.1