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dmaengine: imx-dma: remove 'imxdma_config_channel_hw' function. 

This function is only used once in the driver and uses some
intermediary variables that are not needed anymore. For this
reason it's been merged with 'imxdma_control'.

Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
This commit is contained in:
Javier Martin 2012-03-22 14:54:05 +01:00 committed by Vinod Koul
parent 3b4b6dfc20
commit bdc0c7534c
1 changed files with 13 additions and 33 deletions
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46
drivers/dma/imx-dma.c
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@ -313,32 +313,6 @@ static void imxdma_disable_hw(struct imxdma_channel *imxdmac)
local_irq_restore(flags);
}
static int
imxdma_config_channel_hw(struct imxdma_channel *imxdmac, unsigned int config_port,
unsigned int config_mem, unsigned int dmareq, int hw_chaining)
{
int channel = imxdmac->channel;
u32 dreq = 0;
imxdmac->internal.hw_chaining = 0;
if (hw_chaining) {
imxdmac->internal.hw_chaining = 1;
if (!imxdma_hw_chain(&imxdmac->internal))
return -EINVAL;
}
if (dmareq)
dreq = CCR_REN;
imxdmac->internal.ccr_from_device = config_port | (config_mem << 2) | dreq;
imxdmac->internal.ccr_to_device = config_mem | (config_port << 2) | dreq;
imx_dmav1_writel(dmareq, DMA_RSSR(channel));
return 0;
}
static int
imxdma_setup_sg_hw(struct imxdma_desc *d,
struct scatterlist *sg, unsigned int sgcount,
@ -628,7 +602,6 @@ static int imxdma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
{
struct imxdma_channel *imxdmac = to_imxdma_chan(chan);
struct dma_slave_config *dmaengine_cfg = (void *)arg;
int ret;
unsigned long flags;
unsigned int mode = 0;
@ -664,13 +637,20 @@ static int imxdma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
mode = IMX_DMA_MEMSIZE_32;
break;
}
ret = imxdma_config_channel_hw(imxdmac,
mode | IMX_DMA_TYPE_FIFO,
IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_LINEAR,
imxdmac->dma_request, 1);
if (ret)
return ret;
imxdmac->internal.hw_chaining = 1;
if (!imxdma_hw_chain(&imxdmac->internal))
return -EINVAL;
imxdmac->internal.ccr_from_device =
(mode | IMX_DMA_TYPE_FIFO) |
((IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_LINEAR) << 2) |
CCR_REN;
imxdmac->internal.ccr_to_device =
(IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_LINEAR) |
((mode | IMX_DMA_TYPE_FIFO) << 2) | CCR_REN;
imx_dmav1_writel(imxdmac->dma_request,
DMA_RSSR(imxdmac->channel));
/* Set burst length */
imx_dmav1_writel(imxdmac->watermark_level * imxdmac->word_size,
DMA_BLR(imxdmac->channel));