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DMAENGINE: extend the control command to include an arg 

This adds an argument to the DMAengine control function, so that
we can later provide control commands that need some external data
passed in through an argument akin to the ioctl() operation
prototype.

[dan.j.williams@intel.com: fix up some missed conversions]
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Linus Walleij 2010-05-17 16:30:42 -07:00 committed by Dan Williams
parent 4aed79b281
commit 058276303d
14 changed files with 32 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/dma/at_hdmac.c
View File

@ -759,7 +759,8 @@ err_desc_get:
return NULL;
}
static int atc_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd)
static int atc_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
unsigned long arg)
{
struct at_dma_chan *atchan = to_at_dma_chan(chan);
struct at_dma *atdma = to_at_dma(chan->device);

5
drivers/dma/coh901318.c
View File

@ -942,7 +942,7 @@ coh901318_free_chan_resources(struct dma_chan *chan)
spin_unlock_irqrestore(&cohc->lock, flags);
chan->device->device_control(chan, DMA_TERMINATE_ALL);
chan->device->device_control(chan, DMA_TERMINATE_ALL, 0);
}
@ -1176,7 +1176,8 @@ coh901318_issue_pending(struct dma_chan *chan)
}
static int
coh901318_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd)
coh901318_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
unsigned long arg)
{
unsigned long flags;
struct coh901318_chan *cohc = to_coh901318_chan(chan);

3
drivers/dma/dw_dmac.c
View File

@ -781,7 +781,8 @@ err_desc_get:
return NULL;
}
static int dwc_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd)
static int dwc_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
unsigned long arg)
{
struct dw_dma_chan *dwc = to_dw_dma_chan(chan);
struct dw_dma *dw = to_dw_dma(chan->device);

2
drivers/dma/fsldma.c
View File

@ -775,7 +775,7 @@ fail:
}
static int fsl_dma_device_control(struct dma_chan *dchan,
enum dma_ctrl_cmd cmd)
enum dma_ctrl_cmd cmd, unsigned long arg)
{
struct fsldma_chan *chan;
unsigned long flags;

12
drivers/dma/ipu/ipu_idmac.c
View File

@ -1472,7 +1472,8 @@ static void idmac_issue_pending(struct dma_chan *chan)
*/
}
static int __idmac_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd)
static int __idmac_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
unsigned long arg)
{
struct idmac_channel *ichan = to_idmac_chan(chan);
struct idmac *idmac = to_idmac(chan->device);
@ -1513,14 +1514,15 @@ static int __idmac_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd)
return 0;
}
static int idmac_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd)
static int idmac_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
unsigned long arg)
{
struct idmac_channel *ichan = to_idmac_chan(chan);
int ret;
mutex_lock(&ichan->chan_mutex);
ret = __idmac_control(chan, cmd);
ret = __idmac_control(chan, cmd, arg);
mutex_unlock(&ichan->chan_mutex);
@ -1616,7 +1618,7 @@ static void idmac_free_chan_resources(struct dma_chan *chan)
mutex_lock(&ichan->chan_mutex);
__idmac_control(chan, DMA_TERMINATE_ALL);
__idmac_control(chan, DMA_TERMINATE_ALL, 0);
if (ichan->status > IPU_CHANNEL_FREE) {
#ifdef DEBUG
@ -1709,7 +1711,7 @@ static void __exit ipu_idmac_exit(struct ipu *ipu)
for (i = 0; i < IPU_CHANNELS_NUM; i++) {
struct idmac_channel *ichan = ipu->channel + i;
idmac_control(&ichan->dma_chan, DMA_TERMINATE_ALL);
idmac_control(&ichan->dma_chan, DMA_TERMINATE_ALL, 0);
idmac_prep_slave_sg(&ichan->dma_chan, NULL, 0, DMA_NONE, 0);
}

3
drivers/dma/shdma.c
View File

@ -580,7 +580,8 @@ static struct dma_async_tx_descriptor *sh_dmae_prep_slave_sg(
direction, flags);
}
static int sh_dmae_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd)
static int sh_dmae_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
unsigned long arg)
{
struct sh_dmae_chan *sh_chan = to_sh_chan(chan);

3
drivers/dma/ste_dma40.c
View File

@ -2065,7 +2065,8 @@ static void d40_issue_pending(struct dma_chan *chan)
spin_unlock_irqrestore(&d40c->lock, flags);
}
static int d40_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd)
static int d40_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
unsigned long arg)
{
unsigned long flags;
struct d40_chan *d40c = container_of(chan, struct d40_chan, chan);

3
drivers/dma/timb_dma.c
View File

@ -611,7 +611,8 @@ static struct dma_async_tx_descriptor *td_prep_slave_sg(struct dma_chan *chan,
return &td_desc->txd;
}
static int td_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd)
static int td_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
unsigned long arg)
{
struct timb_dma_chan *td_chan =
container_of(chan, struct timb_dma_chan, chan);

3
drivers/dma/txx9dmac.c
View File

@ -938,7 +938,8 @@ txx9dmac_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
return &first->txd;
}
static int txx9dmac_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd)
static int txx9dmac_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
unsigned long arg)
{
struct txx9dmac_chan *dc = to_txx9dmac_chan(chan);
struct txx9dmac_desc *desc, *_desc;

2
drivers/mmc/host/atmel-mci.c
View File

@ -578,7 +578,7 @@ static void atmci_stop_dma(struct atmel_mci *host)
struct dma_chan *chan = host->data_chan;
if (chan) {
chan->device->device_control(chan, DMA_TERMINATE_ALL);
chan->device->device_control(chan, DMA_TERMINATE_ALL, 0);
atmci_dma_cleanup(host);
} else {
/* Data transfer was stopped by the interrupt handler */

2
drivers/serial/sh-sci.c
View File

@ -1087,7 +1087,7 @@ static void work_fn_rx(struct work_struct *work)
unsigned long flags;
int count;
chan->device->device_control(chan, DMA_TERMINATE_ALL);
chan->device->device_control(chan, DMA_TERMINATE_ALL, 0);
dev_dbg(port->dev, "Read %u bytes with cookie %d\n",
sh_desc->partial, sh_desc->cookie);

2
drivers/video/mx3fb.c
View File

@ -388,7 +388,7 @@ static void sdc_disable_channel(struct mx3fb_info *mx3_fbi)
spin_unlock_irqrestore(&mx3fb->lock, flags);
mx3_fbi->txd->chan->device->device_control(mx3_fbi->txd->chan,
DMA_TERMINATE_ALL);
DMA_TERMINATE_ALL, 0);
mx3_fbi->txd = NULL;
mx3_fbi->cookie = -EINVAL;
}

3
include/linux/dmaengine.h
View File

@ -347,7 +347,8 @@ struct dma_device {
struct dma_chan *chan, struct scatterlist *sgl,
unsigned int sg_len, enum dma_data_direction direction,
unsigned long flags);
int (*device_control)(struct dma_chan *chan, enum dma_ctrl_cmd cmd);
int (*device_control)(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
unsigned long arg);
enum dma_status (*device_tx_status)(struct dma_chan *chan,
dma_cookie_t cookie,

7
sound/soc/txx9/txx9aclc.c
View File

@ -159,7 +159,7 @@ static void txx9aclc_dma_tasklet(unsigned long data)
void __iomem *base = drvdata->base;
spin_unlock_irqrestore(&dmadata->dma_lock, flags);
chan->device->device_control(chan, DMA_TERMINATE_ALL);
chan->device->device_control(chan, DMA_TERMINATE_ALL, 0);
/* first time */
for (i = 0; i < NR_DMA_CHAIN; i++) {
desc = txx9aclc_dma_submit(dmadata,
@ -267,7 +267,7 @@ static int txx9aclc_pcm_close(struct snd_pcm_substream *substream)
struct dma_chan *chan = dmadata->dma_chan;
dmadata->frag_count = -1;
chan->device->device_control(chan, DMA_TERMINATE_ALL);
chan->device->device_control(chan, DMA_TERMINATE_ALL, 0);
return 0;
}
@ -396,7 +396,8 @@ static int txx9aclc_pcm_remove(struct platform_device *pdev)
struct dma_chan *chan = dmadata->dma_chan;
if (chan) {
dmadata->frag_count = -1;
chan->device->device_control(chan, DMA_TERMINATE_ALL);
chan->device->device_control(chan,
DMA_TERMINATE_ALL, 0);
dma_release_channel(chan);
}
dev->dmadata[i].dma_chan = NULL;