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Date: Fri, 16 Oct 2015 10:18:05 +0300
From: Peter Ujfalusi <peter.ujfalusi@...com>
To: <vinod.koul@...el.com>, <nsekhar@...com>
CC: <linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>,
<dmaengine@...r.kernel.org>, <devicetree@...r.kernel.org>,
<tony@...mide.com>, <r.schwebel@...gutronix.de>
Subject: [PATCH v2 07/14] dmaengine: edma: Refactor the dma device and channel struct initialization
Move all code under one function to do the dma device and eDMA channel
related setup so they are not scattered around the driver.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
---
drivers/dma/edma.c | 79 +++++++++++++++++++++++++-----------------------------
1 file changed, 37 insertions(+), 42 deletions(-)
diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c
index ea851ab05c8e..e1b0e6864f27 100644
--- a/drivers/dma/edma.c
+++ b/drivers/dma/edma.c
@@ -1756,18 +1756,49 @@ static enum dma_status edma_tx_status(struct dma_chan *chan,
return ret;
}
-static void __init edma_chan_init(struct edma_cc *ecc, struct dma_device *dma,
- struct edma_chan *echans)
+#define EDMA_DMA_BUSWIDTHS (BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | \
+ BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | \
+ BIT(DMA_SLAVE_BUSWIDTH_3_BYTES) | \
+ BIT(DMA_SLAVE_BUSWIDTH_4_BYTES))
+
+static void edma_dma_init(struct edma_cc *ecc)
{
+ struct dma_device *ddev = &ecc->dma_slave;
int i, j;
+ dma_cap_zero(ddev->cap_mask);
+ dma_cap_set(DMA_SLAVE, ddev->cap_mask);
+ dma_cap_set(DMA_CYCLIC, ddev->cap_mask);
+ dma_cap_set(DMA_MEMCPY, ddev->cap_mask);
+
+ ddev->device_prep_slave_sg = edma_prep_slave_sg;
+ ddev->device_prep_dma_cyclic = edma_prep_dma_cyclic;
+ ddev->device_prep_dma_memcpy = edma_prep_dma_memcpy;
+ ddev->device_alloc_chan_resources = edma_alloc_chan_resources;
+ ddev->device_free_chan_resources = edma_free_chan_resources;
+ ddev->device_issue_pending = edma_issue_pending;
+ ddev->device_tx_status = edma_tx_status;
+ ddev->device_config = edma_slave_config;
+ ddev->device_pause = edma_dma_pause;
+ ddev->device_resume = edma_dma_resume;
+ ddev->device_terminate_all = edma_terminate_all;
+
+ ddev->src_addr_widths = EDMA_DMA_BUSWIDTHS;
+ ddev->dst_addr_widths = EDMA_DMA_BUSWIDTHS;
+ ddev->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
+ ddev->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
+
+ ddev->dev = ecc->dev;
+
+ INIT_LIST_HEAD(&ddev->channels);
+
for (i = 0; i < ecc->num_channels; i++) {
- struct edma_chan *echan = &echans[i];
+ struct edma_chan *echan = &ecc->slave_chans[i];
echan->ch_num = EDMA_CTLR_CHAN(ecc->id, i);
echan->ecc = ecc;
echan->vchan.desc_free = edma_desc_free;
- vchan_init(&echan->vchan, dma);
+ vchan_init(&echan->vchan, ddev);
INIT_LIST_HEAD(&echan->node);
for (j = 0; j < EDMA_MAX_SLOTS; j++)
@@ -1775,36 +1806,6 @@ static void __init edma_chan_init(struct edma_cc *ecc, struct dma_device *dma,
}
}
-#define EDMA_DMA_BUSWIDTHS (BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | \
- BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | \
- BIT(DMA_SLAVE_BUSWIDTH_3_BYTES) | \
- BIT(DMA_SLAVE_BUSWIDTH_4_BYTES))
-
-static void edma_dma_init(struct edma_cc *ecc, struct dma_device *dma,
- struct device *dev)
-{
- dma->device_prep_slave_sg = edma_prep_slave_sg;
- dma->device_prep_dma_cyclic = edma_prep_dma_cyclic;
- dma->device_prep_dma_memcpy = edma_prep_dma_memcpy;
- dma->device_alloc_chan_resources = edma_alloc_chan_resources;
- 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_config = edma_slave_config;
- dma->device_pause = edma_dma_pause;
- dma->device_resume = edma_dma_resume;
- dma->device_terminate_all = edma_terminate_all;
-
- dma->src_addr_widths = EDMA_DMA_BUSWIDTHS;
- dma->dst_addr_widths = EDMA_DMA_BUSWIDTHS;
- dma->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
- dma->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
-
- dma->dev = dev;
-
- INIT_LIST_HEAD(&dma->channels);
-}
-
static int edma_setup_from_hw(struct device *dev, struct edma_soc_info *pdata,
struct edma_cc *ecc)
{
@@ -2137,14 +2138,8 @@ static int edma_probe(struct platform_device *pdev)
}
ecc->info = info;
- dma_cap_zero(ecc->dma_slave.cap_mask);
- dma_cap_set(DMA_SLAVE, ecc->dma_slave.cap_mask);
- dma_cap_set(DMA_CYCLIC, ecc->dma_slave.cap_mask);
- dma_cap_set(DMA_MEMCPY, ecc->dma_slave.cap_mask);
-
- edma_dma_init(ecc, &ecc->dma_slave, dev);
-
- edma_chan_init(ecc, &ecc->dma_slave, ecc->slave_chans);
+ /* Init the dma device and channels */
+ edma_dma_init(ecc);
for (i = 0; i < ecc->num_channels; i++) {
/* Assign all channels to the default queue */
--
2.6.1
--
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