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dmaengine: consolidate initialization of cookies 

Provide a common function to initialize a channels cookie values.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Jassi Brar <jassisinghbrar@gmail.com>
[imx-sdma.c & mxs-dma.c]
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
This commit is contained in:
Russell King - ARM Linux 2012-03-06 22:35:47 +00:00 committed by Vinod Koul
parent 96a2af41c7
commit d3ee98cdcd
15 changed files with 31 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/dma/amba-pl08x.c
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@ -1709,8 +1709,7 @@ static int pl08x_dma_init_virtual_channels(struct pl08x_driver_data *pl08x,
chan->name);
chan->chan.device = dmadev;
chan->chan.cookie = 0;
chan->chan.completed_cookie = 0;
dma_cookie_init(&chan->chan);
spin_lock_init(&chan->lock);
INIT_LIST_HEAD(&chan->pend_list);

4
drivers/dma/at_hdmac.c
View File

@ -1103,7 +1103,7 @@ static int atc_alloc_chan_resources(struct dma_chan *chan)
spin_lock_irqsave(&atchan->lock, flags);
atchan->descs_allocated = i;
list_splice(&tmp_list, &atchan->free_list);
chan->completed_cookie = chan->cookie = 1;
dma_cookie_init(chan);
spin_unlock_irqrestore(&atchan->lock, flags);
/* channel parameters */
@ -1303,7 +1303,7 @@ static int __init at_dma_probe(struct platform_device *pdev)
struct at_dma_chan *atchan = &atdma->chan[i];
atchan->chan_common.device = &atdma->dma_common;
atchan->chan_common.cookie = atchan->chan_common.completed_cookie = 1;
dma_cookie_init(&atchan->chan_common);
list_add_tail(&atchan->chan_common.device_node,
&atdma->dma_common.channels);

2
drivers/dma/coh901318.c
View File

@ -915,7 +915,7 @@ static int coh901318_alloc_chan_resources(struct dma_chan *chan)
coh901318_config(cohc, NULL);
cohc->allocated = 1;
chan->completed_cookie = chan->cookie = 1;
dma_cookie_init(chan);
spin_unlock_irqrestore(&cohc->lock, flags);

10
drivers/dma/dmaengine.h
View File

@ -8,6 +8,16 @@
#include <linux/bug.h>
#include <linux/dmaengine.h>
/**
* dma_cookie_init - initialize the cookies for a DMA channel
* @chan: dma channel to initialize
*/
static inline void dma_cookie_init(struct dma_chan *chan)
{
chan->cookie = DMA_MIN_COOKIE;
chan->completed_cookie = DMA_MIN_COOKIE;
}
/**
* dma_cookie_assign - assign a DMA engine cookie to the descriptor
* @tx: descriptor needing cookie

4
drivers/dma/dw_dmac.c
View File

@ -1021,7 +1021,7 @@ static int dwc_alloc_chan_resources(struct dma_chan *chan)
return -EIO;
}
chan->completed_cookie = chan->cookie = 1;
dma_cookie_init(chan);
/*
* NOTE: some controllers may have additional features that we
@ -1449,7 +1449,7 @@ static int __init dw_probe(struct platform_device *pdev)
struct dw_dma_chan *dwc = &dw->chan[i];
dwc->chan.device = &dw->dma;
dwc->chan.cookie = dwc->chan.completed_cookie = 1;
dma_cookie_init(&dwc->chan);
if (pdata->chan_allocation_order == CHAN_ALLOCATION_ASCENDING)
list_add_tail(&dwc->chan.device_node,
&dw->dma.channels);

3
drivers/dma/ep93xx_dma.c
View File

@ -854,8 +854,7 @@ static int ep93xx_dma_alloc_chan_resources(struct dma_chan *chan)
goto fail_clk_disable;
spin_lock_irq(&edmac->lock);
edmac->chan.completed_cookie = 1;
edmac->chan.cookie = 1;
dma_cookie_init(&edmac->chan);
ret = edmac->edma->hw_setup(edmac);
spin_unlock_irq(&edmac->lock);

4
drivers/dma/intel_mid_dma.c
View File

@ -867,7 +867,7 @@ static int intel_mid_dma_alloc_chan_resources(struct dma_chan *chan)
pm_runtime_put(&mid->pdev->dev);
return -EIO;
}
chan->completed_cookie = chan->cookie = 1;
dma_cookie_init(chan);
spin_lock_bh(&midc->lock);
while (midc->descs_allocated < DESCS_PER_CHANNEL) {
@ -1100,7 +1100,7 @@ static int mid_setup_dma(struct pci_dev *pdev)
struct intel_mid_dma_chan *midch = &dma->ch[i];
midch->chan.device = &dma->common;
midch->chan.cookie = 1;
dma_cookie_init(&midch->chan);
midch->ch_id = dma->chan_base + i;
pr_debug("MDMA:Init CH %d, ID %d\n", i, midch->ch_id);

6
drivers/dma/ipu/ipu_idmac.c
View File

@ -1504,8 +1504,7 @@ static int idmac_alloc_chan_resources(struct dma_chan *chan)
BUG_ON(chan->client_count > 1);
WARN_ON(ichan->status != IPU_CHANNEL_FREE);
chan->cookie = 1;
chan->completed_cookie = -ENXIO;
dma_cookie_init(chan);
ret = ipu_irq_map(chan->chan_id);
if (ret < 0)
@ -1633,8 +1632,7 @@ static int __init ipu_idmac_init(struct ipu *ipu)
snprintf(ichan->eof_name, sizeof(ichan->eof_name), "IDMAC EOF %d", i);
dma_chan->device = &idmac->dma;
dma_chan->cookie = 1;
dma_chan->completed_cookie = -ENXIO;
dma_cookie_init(dma_chan);
dma_chan->chan_id = i;
list_add_tail(&dma_chan->device_node, &dma->channels);
}

3
drivers/dma/mpc512x_dma.c
View File

@ -733,8 +733,7 @@ static int __devinit mpc_dma_probe(struct platform_device *op)
mchan = &mdma->channels[i];
mchan->chan.device = dma;
mchan->chan.cookie = 1;
mchan->chan.completed_cookie = mchan->chan.cookie;
dma_cookie_init(&mchan->chan);
INIT_LIST_HEAD(&mchan->free);
INIT_LIST_HEAD(&mchan->prepared);

4
drivers/dma/pch_dma.c
View File

@ -531,7 +531,7 @@ static int pd_alloc_chan_resources(struct dma_chan *chan)
spin_lock_irq(&pd_chan->lock);
list_splice(&tmp_list, &pd_chan->free_list);
pd_chan->descs_allocated = i;
chan->completed_cookie = chan->cookie = 1;
dma_cookie_init(chan);
spin_unlock_irq(&pd_chan->lock);
pdc_enable_irq(chan, 1);
@ -912,7 +912,7 @@ static int __devinit pch_dma_probe(struct pci_dev *pdev,
struct pch_dma_chan *pd_chan = &pd->channels[i];
pd_chan->chan.device = &pd->dma;
pd_chan->chan.cookie = 1;
dma_cookie_init(&pd_chan->chan);
pd_chan->membase = &regs->desc[i];

2
drivers/dma/pl330.c
View File

@ -304,7 +304,7 @@ static int pl330_alloc_chan_resources(struct dma_chan *chan)
spin_lock_irqsave(&pch->lock, flags);
chan->completed_cookie = chan->cookie = 1;
dma_cookie_init(chan);
pch->cyclic = false;
pch->pl330_chid = pl330_request_channel(&pdmac->pif);

3
drivers/dma/sirf-dma.c
View File

@ -625,8 +625,7 @@ static int __devinit sirfsoc_dma_probe(struct platform_device *op)
schan = &sdma->channels[i];
schan->chan.device = dma;
schan->chan.cookie = 1;
schan->chan.completed_cookie = schan->chan.cookie;
dma_cookie_init(&schan->chan);
INIT_LIST_HEAD(&schan->free);
INIT_LIST_HEAD(&schan->prepared);

2
drivers/dma/ste_dma40.c
View File

@ -2172,7 +2172,7 @@ static int d40_alloc_chan_resources(struct dma_chan *chan)
bool is_free_phy;
spin_lock_irqsave(&d40c->lock, flags);
chan->completed_cookie = chan->cookie = 1;
dma_cookie_init(chan);
/* If no dma configuration is set use default configuration (memcpy) */
if (!d40c->configured) {

5
drivers/dma/timb_dma.c
View File

@ -477,8 +477,7 @@ static int td_alloc_chan_resources(struct dma_chan *chan)
}
spin_lock_bh(&td_chan->lock);
chan->completed_cookie = 1;
chan->cookie = 1;
dma_cookie_init(chan);
spin_unlock_bh(&td_chan->lock);
return 0;
@ -755,7 +754,7 @@ static int __devinit td_probe(struct platform_device *pdev)
}
td_chan->chan.device = &td->dma;
td_chan->chan.cookie = 1;
dma_cookie_init(&td_chan->chan);
spin_lock_init(&td_chan->lock);
INIT_LIST_HEAD(&td_chan->active_list);
INIT_LIST_HEAD(&td_chan->queue);

4
drivers/dma/txx9dmac.c
View File

@ -1034,7 +1034,7 @@ static int txx9dmac_alloc_chan_resources(struct dma_chan *chan)
return -EIO;
}
chan->completed_cookie = chan->cookie = 1;
dma_cookie_init(chan);
dc->ccr = TXX9_DMA_CCR_IMMCHN | TXX9_DMA_CCR_INTENE | CCR_LE;
txx9dmac_chan_set_SMPCHN(dc);
@ -1163,7 +1163,7 @@ static int __init txx9dmac_chan_probe(struct platform_device *pdev)
dc->ddev->chan[ch] = dc;
dc->chan.device = &dc->dma;
list_add_tail(&dc->chan.device_node, &dc->chan.device->channels);
dc->chan.cookie = dc->chan.completed_cookie = 1;
dma_cookie_init(&dc->chan);
if (is_dmac64(dc))
dc->ch_regs = &__txx9dmac_regs(dc->ddev)->CHAN[ch];