mirror of https://gitee.com/openkylin/linux.git
dmaengine: pl08x: Split device_control
Split the device_control callback of the AMBA PL08x DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
parent
cb8cea513c
commit
bcd1b0b901
|
@ -1386,32 +1386,6 @@ static u32 pl08x_get_cctl(struct pl08x_dma_chan *plchan,
|
|||
return pl08x_cctl(cctl);
|
||||
}
|
||||
|
||||
static int dma_set_runtime_config(struct dma_chan *chan,
|
||||
struct dma_slave_config *config)
|
||||
{
|
||||
struct pl08x_dma_chan *plchan = to_pl08x_chan(chan);
|
||||
struct pl08x_driver_data *pl08x = plchan->host;
|
||||
|
||||
if (!plchan->slave)
|
||||
return -EINVAL;
|
||||
|
||||
/* Reject definitely invalid configurations */
|
||||
if (config->src_addr_width == DMA_SLAVE_BUSWIDTH_8_BYTES ||
|
||||
config->dst_addr_width == DMA_SLAVE_BUSWIDTH_8_BYTES)
|
||||
return -EINVAL;
|
||||
|
||||
if (config->device_fc && pl08x->vd->pl080s) {
|
||||
dev_err(&pl08x->adev->dev,
|
||||
"%s: PL080S does not support peripheral flow control\n",
|
||||
__func__);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
plchan->cfg = *config;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Slave transactions callback to the slave device to allow
|
||||
* synchronization of slave DMA signals with the DMAC enable
|
||||
|
@ -1693,32 +1667,44 @@ static struct dma_async_tx_descriptor *pl08x_prep_dma_cyclic(
|
|||
return vchan_tx_prep(&plchan->vc, &txd->vd, flags);
|
||||
}
|
||||
|
||||
static int pl08x_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
|
||||
unsigned long arg)
|
||||
static int pl08x_config(struct dma_chan *chan,
|
||||
struct dma_slave_config *config)
|
||||
{
|
||||
struct pl08x_dma_chan *plchan = to_pl08x_chan(chan);
|
||||
struct pl08x_driver_data *pl08x = plchan->host;
|
||||
|
||||
if (!plchan->slave)
|
||||
return -EINVAL;
|
||||
|
||||
/* Reject definitely invalid configurations */
|
||||
if (config->src_addr_width == DMA_SLAVE_BUSWIDTH_8_BYTES ||
|
||||
config->dst_addr_width == DMA_SLAVE_BUSWIDTH_8_BYTES)
|
||||
return -EINVAL;
|
||||
|
||||
if (config->device_fc && pl08x->vd->pl080s) {
|
||||
dev_err(&pl08x->adev->dev,
|
||||
"%s: PL080S does not support peripheral flow control\n",
|
||||
__func__);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
plchan->cfg = *config;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int pl08x_terminate_all(struct dma_chan *chan)
|
||||
{
|
||||
struct pl08x_dma_chan *plchan = to_pl08x_chan(chan);
|
||||
struct pl08x_driver_data *pl08x = plchan->host;
|
||||
unsigned long flags;
|
||||
int ret = 0;
|
||||
|
||||
/* Controls applicable to inactive channels */
|
||||
if (cmd == DMA_SLAVE_CONFIG) {
|
||||
return dma_set_runtime_config(chan,
|
||||
(struct dma_slave_config *)arg);
|
||||
}
|
||||
|
||||
/*
|
||||
* Anything succeeds on channels with no physical allocation and
|
||||
* no queued transfers.
|
||||
*/
|
||||
spin_lock_irqsave(&plchan->vc.lock, flags);
|
||||
if (!plchan->phychan && !plchan->at) {
|
||||
spin_unlock_irqrestore(&plchan->vc.lock, flags);
|
||||
return 0;
|
||||
}
|
||||
|
||||
switch (cmd) {
|
||||
case DMA_TERMINATE_ALL:
|
||||
plchan->state = PL08X_CHAN_IDLE;
|
||||
|
||||
if (plchan->phychan) {
|
||||
|
@ -1735,24 +1721,56 @@ static int pl08x_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
|
|||
}
|
||||
/* Dequeue jobs not yet fired as well */
|
||||
pl08x_free_txd_list(pl08x, plchan);
|
||||
break;
|
||||
case DMA_PAUSE:
|
||||
pl08x_pause_phy_chan(plchan->phychan);
|
||||
plchan->state = PL08X_CHAN_PAUSED;
|
||||
break;
|
||||
case DMA_RESUME:
|
||||
pl08x_resume_phy_chan(plchan->phychan);
|
||||
plchan->state = PL08X_CHAN_RUNNING;
|
||||
break;
|
||||
default:
|
||||
/* Unknown command */
|
||||
ret = -ENXIO;
|
||||
break;
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&plchan->vc.lock, flags);
|
||||
|
||||
return ret;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int pl08x_pause(struct dma_chan *chan)
|
||||
{
|
||||
struct pl08x_dma_chan *plchan = to_pl08x_chan(chan);
|
||||
unsigned long flags;
|
||||
|
||||
/*
|
||||
* Anything succeeds on channels with no physical allocation and
|
||||
* no queued transfers.
|
||||
*/
|
||||
spin_lock_irqsave(&plchan->vc.lock, flags);
|
||||
if (!plchan->phychan && !plchan->at) {
|
||||
spin_unlock_irqrestore(&plchan->vc.lock, flags);
|
||||
return 0;
|
||||
}
|
||||
|
||||
pl08x_pause_phy_chan(plchan->phychan);
|
||||
plchan->state = PL08X_CHAN_PAUSED;
|
||||
|
||||
spin_unlock_irqrestore(&plchan->vc.lock, flags);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int pl08x_resume(struct dma_chan *chan)
|
||||
{
|
||||
struct pl08x_dma_chan *plchan = to_pl08x_chan(chan);
|
||||
unsigned long flags;
|
||||
|
||||
/*
|
||||
* Anything succeeds on channels with no physical allocation and
|
||||
* no queued transfers.
|
||||
*/
|
||||
spin_lock_irqsave(&plchan->vc.lock, flags);
|
||||
if (!plchan->phychan && !plchan->at) {
|
||||
spin_unlock_irqrestore(&plchan->vc.lock, flags);
|
||||
return 0;
|
||||
}
|
||||
|
||||
pl08x_resume_phy_chan(plchan->phychan);
|
||||
plchan->state = PL08X_CHAN_RUNNING;
|
||||
|
||||
spin_unlock_irqrestore(&plchan->vc.lock, flags);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
bool pl08x_filter_id(struct dma_chan *chan, void *chan_id)
|
||||
|
@ -2048,7 +2066,10 @@ static int pl08x_probe(struct amba_device *adev, const struct amba_id *id)
|
|||
pl08x->memcpy.device_prep_dma_interrupt = pl08x_prep_dma_interrupt;
|
||||
pl08x->memcpy.device_tx_status = pl08x_dma_tx_status;
|
||||
pl08x->memcpy.device_issue_pending = pl08x_issue_pending;
|
||||
pl08x->memcpy.device_control = pl08x_control;
|
||||
pl08x->memcpy.device_config = pl08x_config;
|
||||
pl08x->memcpy.device_pause = pl08x_pause;
|
||||
pl08x->memcpy.device_resume = pl08x_resume;
|
||||
pl08x->memcpy.device_terminate_all = pl08x_terminate_all;
|
||||
|
||||
/* Initialize slave engine */
|
||||
dma_cap_set(DMA_SLAVE, pl08x->slave.cap_mask);
|
||||
|
@ -2061,7 +2082,10 @@ static int pl08x_probe(struct amba_device *adev, const struct amba_id *id)
|
|||
pl08x->slave.device_issue_pending = pl08x_issue_pending;
|
||||
pl08x->slave.device_prep_slave_sg = pl08x_prep_slave_sg;
|
||||
pl08x->slave.device_prep_dma_cyclic = pl08x_prep_dma_cyclic;
|
||||
pl08x->slave.device_control = pl08x_control;
|
||||
pl08x->slave.device_config = pl08x_config;
|
||||
pl08x->slave.device_pause = pl08x_pause;
|
||||
pl08x->slave.device_resume = pl08x_resume;
|
||||
pl08x->slave.device_terminate_all = pl08x_terminate_all;
|
||||
|
||||
/* Get the platform data */
|
||||
pl08x->pd = dev_get_platdata(&adev->dev);
|
||||
|
|
Loading…
Reference in New Issue