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i2c: sh_mobile: use proper device for mapping DMA memory

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It should be the DMA device, not the platform device.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Wolfram Sang 2014-11-19 13:43:22 +01:00 • committed by Wolfram Sang
parent f508493367
commit 8cfcae9f05
1 changed files with 14 additions and 9 deletions
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23
drivers/i2c/busses/i2c-sh_mobile.c
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@ -507,6 +507,17 @@ static irqreturn_t sh_mobile_i2c_isr(int irq, void *dev_id)
return IRQ_HANDLED; return IRQ_HANDLED;
} }
static void sh_mobile_i2c_dma_unmap(struct sh_mobile_i2c_data *pd)
{
struct dma_chan *chan = pd->dma_direction == DMA_FROM_DEVICE
? pd->dma_rx : pd->dma_tx;
dma_unmap_single(chan->device->dev, sg_dma_address(&pd->sg),
pd->msg->len, pd->dma_direction);
pd->dma_direction = DMA_NONE;
}
static void sh_mobile_i2c_cleanup_dma(struct sh_mobile_i2c_data *pd) static void sh_mobile_i2c_cleanup_dma(struct sh_mobile_i2c_data *pd)
{ {
if (pd->dma_direction == DMA_NONE) if (pd->dma_direction == DMA_NONE)
@ -516,20 +527,14 @@ static void sh_mobile_i2c_cleanup_dma(struct sh_mobile_i2c_data *pd)
else if (pd->dma_direction == DMA_TO_DEVICE) else if (pd->dma_direction == DMA_TO_DEVICE)
dmaengine_terminate_all(pd->dma_tx); dmaengine_terminate_all(pd->dma_tx);
dma_unmap_single(pd->dev, sg_dma_address(&pd->sg), sh_mobile_i2c_dma_unmap(pd);
pd->msg->len, pd->dma_direction);
pd->dma_direction = DMA_NONE;
} }
static void sh_mobile_i2c_dma_callback(void *data) static void sh_mobile_i2c_dma_callback(void *data)
{ {
struct sh_mobile_i2c_data *pd = data; struct sh_mobile_i2c_data *pd = data;
dma_unmap_single(pd->dev, sg_dma_address(&pd->sg), sh_mobile_i2c_dma_unmap(pd);
pd->msg->len, pd->dma_direction);
pd->dma_direction = DMA_NONE;
pd->pos = pd->msg->len; pd->pos = pd->msg->len;
iic_set_clr(pd, ICIC, 0, ICIC_TDMAE | ICIC_RDMAE); iic_set_clr(pd, ICIC, 0, ICIC_TDMAE | ICIC_RDMAE);
@ -547,7 +552,7 @@ static void sh_mobile_i2c_xfer_dma(struct sh_mobile_i2c_data *pd)
if (!chan) if (!chan)
return; return;
dma_addr = dma_map_single(pd->dev, pd->msg->buf, pd->msg->len, dir); dma_addr = dma_map_single(chan->device->dev, pd->msg->buf, pd->msg->len, dir);
if (dma_mapping_error(pd->dev, dma_addr)) { if (dma_mapping_error(pd->dev, dma_addr)) {
dev_dbg(pd->dev, "dma map failed, using PIO\n"); dev_dbg(pd->dev, "dma map failed, using PIO\n");
return; return;