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dmaengine: d40: Split device_control 

Split the device_control callback of the ST-Ericsson DMA 40 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>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Maxime Ripard 2014-11-17 14:42:36 +01:00 committed by Vinod Koul
parent 826b15a7a8
commit 6f5bad03e8
1 changed files with 28 additions and 32 deletions
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60
drivers/dma/ste_dma40.c
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@ -1429,11 +1429,17 @@ static bool d40_tx_is_linked(struct d40_chan *d40c)
return is_link; return is_link;
} }
static int d40_pause(struct d40_chan *d40c) static int d40_pause(struct dma_chan *chan)
{ {
struct d40_chan *d40c = container_of(chan, struct d40_chan, chan);
int res = 0; int res = 0;
unsigned long flags; unsigned long flags;
if (d40c->phy_chan == NULL) {
chan_err(d40c, "Channel is not allocated!\n");
return -EINVAL;
}
if (!d40c->busy) if (!d40c->busy)
return 0; return 0;
@ -1448,11 +1454,17 @@ static int d40_pause(struct d40_chan *d40c)
return res; return res;
} }
static int d40_resume(struct d40_chan *d40c) static int d40_resume(struct dma_chan *chan)
{ {
struct d40_chan *d40c = container_of(chan, struct d40_chan, chan);
int res = 0; int res = 0;
unsigned long flags; unsigned long flags;
if (d40c->phy_chan == NULL) {
chan_err(d40c, "Channel is not allocated!\n");
return -EINVAL;
}
if (!d40c->busy) if (!d40c->busy)
return 0; return 0;
@ -2610,6 +2622,11 @@ static void d40_terminate_all(struct dma_chan *chan)
struct d40_chan *d40c = container_of(chan, struct d40_chan, chan); struct d40_chan *d40c = container_of(chan, struct d40_chan, chan);
int ret; int ret;
if (d40c->phy_chan == NULL) {
chan_err(d40c, "Channel is not allocated!\n");
return -EINVAL;
}
spin_lock_irqsave(&d40c->lock, flags); spin_lock_irqsave(&d40c->lock, flags);
pm_runtime_get_sync(d40c->base->dev); pm_runtime_get_sync(d40c->base->dev);
@ -2673,6 +2690,11 @@ static int d40_set_runtime_config(struct dma_chan *chan,
u32 src_maxburst, dst_maxburst; u32 src_maxburst, dst_maxburst;
int ret; int ret;
if (d40c->phy_chan == NULL) {
chan_err(d40c, "Channel is not allocated!\n");
return -EINVAL;
}
src_addr_width = config->src_addr_width; src_addr_width = config->src_addr_width;
src_maxburst = config->src_maxburst; src_maxburst = config->src_maxburst;
dst_addr_width = config->dst_addr_width; dst_addr_width = config->dst_addr_width;
@ -2781,35 +2803,6 @@ static int d40_set_runtime_config(struct dma_chan *chan,
return 0; return 0;
} }
static int d40_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
unsigned long arg)
{
struct d40_chan *d40c = container_of(chan, struct d40_chan, chan);
if (d40c->phy_chan == NULL) {
chan_err(d40c, "Channel is not allocated!\n");
return -EINVAL;
}
switch (cmd) {
case DMA_TERMINATE_ALL:
d40_terminate_all(chan);
return 0;
case DMA_PAUSE:
return d40_pause(d40c);
case DMA_RESUME:
return d40_resume(d40c);
case DMA_SLAVE_CONFIG:
return d40_set_runtime_config(chan,
(struct dma_slave_config *) arg);
default:
break;
}
/* Other commands are unimplemented */
return -ENXIO;
}
/* Initialization functions */ /* Initialization functions */
static void __init d40_chan_init(struct d40_base *base, struct dma_device *dma, static void __init d40_chan_init(struct d40_base *base, struct dma_device *dma,
@ -2870,7 +2863,10 @@ static void d40_ops_init(struct d40_base *base, struct dma_device *dev)
dev->device_free_chan_resources = d40_free_chan_resources; dev->device_free_chan_resources = d40_free_chan_resources;
dev->device_issue_pending = d40_issue_pending; dev->device_issue_pending = d40_issue_pending;
dev->device_tx_status = d40_tx_status; dev->device_tx_status = d40_tx_status;
dev->device_control = d40_control; dev->device_config = d40_set_runtime_config;
dev->device_pause = d40_pause;
dev->device_resume = d40_resume;
dev->device_terminate_all = d40_terminate_all;
dev->dev = base->dev; dev->dev = base->dev;
} }