From 02f77ef1197bd0acde8c0b7ed2b4dee7da7bcbf6 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Fri, 16 Oct 2015 10:18:05 +0300 Subject: [PATCH] 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 Signed-off-by: Vinod Koul --- 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 */ -- 2.20.1