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authorMaxime Ripard <maxime.ripard@free-electrons.com>2014-11-17 14:42:09 +0100
committerVinod Koul <vinod.koul@intel.com>2014-12-22 12:28:57 +0530
commit6782af118b6c86419303a5daa3cf5a813d89954a (patch)
tree05ef7f63703184b64365d869ce07fef30f1ea86c /drivers/dma/coh901318.c
parent39159bea78ed0565bfffb7100b396a56625f1d00 (diff)
downloadop-kernel-dev-6782af118b6c86419303a5daa3cf5a813d89954a.zip
op-kernel-dev-6782af118b6c86419303a5daa3cf5a813d89954a.tar.gz
dmaengine: coh901318: Split device_control
Split the device_control callback of the ST-Ericsson COH901318 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> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/coh901318.c')
-rw-r--r--drivers/dma/coh901318.c137
1 files changed, 60 insertions, 77 deletions
diff --git a/drivers/dma/coh901318.c b/drivers/dma/coh901318.c
index e88588d..418e4e4 100644
--- a/drivers/dma/coh901318.c
+++ b/drivers/dma/coh901318.c
@@ -2114,6 +2114,57 @@ static irqreturn_t dma_irq_handler(int irq, void *dev_id)
return IRQ_HANDLED;
}
+static int coh901318_terminate_all(struct dma_chan *chan)
+{
+ unsigned long flags;
+ struct coh901318_chan *cohc = to_coh901318_chan(chan);
+ struct coh901318_desc *cohd;
+ void __iomem *virtbase = cohc->base->virtbase;
+
+ /* The remainder of this function terminates the transfer */
+ coh901318_pause(chan);
+ spin_lock_irqsave(&cohc->lock, flags);
+
+ /* Clear any pending BE or TC interrupt */
+ if (cohc->id < 32) {
+ writel(1 << cohc->id, virtbase + COH901318_BE_INT_CLEAR1);
+ writel(1 << cohc->id, virtbase + COH901318_TC_INT_CLEAR1);
+ } else {
+ writel(1 << (cohc->id - 32), virtbase +
+ COH901318_BE_INT_CLEAR2);
+ writel(1 << (cohc->id - 32), virtbase +
+ COH901318_TC_INT_CLEAR2);
+ }
+
+ enable_powersave(cohc);
+
+ while ((cohd = coh901318_first_active_get(cohc))) {
+ /* release the lli allocation*/
+ coh901318_lli_free(&cohc->base->pool, &cohd->lli);
+
+ /* return desc to free-list */
+ coh901318_desc_remove(cohd);
+ coh901318_desc_free(cohc, cohd);
+ }
+
+ while ((cohd = coh901318_first_queued(cohc))) {
+ /* release the lli allocation*/
+ coh901318_lli_free(&cohc->base->pool, &cohd->lli);
+
+ /* return desc to free-list */
+ coh901318_desc_remove(cohd);
+ coh901318_desc_free(cohc, cohd);
+ }
+
+
+ cohc->nbr_active_done = 0;
+ cohc->busy = 0;
+
+ spin_unlock_irqrestore(&cohc->lock, flags);
+
+ return 0;
+}
+
static int coh901318_alloc_chan_resources(struct dma_chan *chan)
{
struct coh901318_chan *cohc = to_coh901318_chan(chan);
@@ -2156,7 +2207,7 @@ coh901318_free_chan_resources(struct dma_chan *chan)
spin_unlock_irqrestore(&cohc->lock, flags);
- dmaengine_terminate_all(chan);
+ coh901318_terminate_all(chan);
}
@@ -2540,80 +2591,6 @@ static void coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
cohc->ctrl = ctrl;
}
-static int
-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);
- struct coh901318_desc *cohd;
- void __iomem *virtbase = cohc->base->virtbase;
-
- if (cmd == DMA_SLAVE_CONFIG) {
- struct dma_slave_config *config =
- (struct dma_slave_config *) arg;
-
- coh901318_dma_set_runtimeconfig(chan, config);
- return 0;
- }
-
- if (cmd == DMA_PAUSE) {
- coh901318_pause(chan);
- return 0;
- }
-
- if (cmd == DMA_RESUME) {
- coh901318_resume(chan);
- return 0;
- }
-
- if (cmd != DMA_TERMINATE_ALL)
- return -ENXIO;
-
- /* The remainder of this function terminates the transfer */
- coh901318_pause(chan);
- spin_lock_irqsave(&cohc->lock, flags);
-
- /* Clear any pending BE or TC interrupt */
- if (cohc->id < 32) {
- writel(1 << cohc->id, virtbase + COH901318_BE_INT_CLEAR1);
- writel(1 << cohc->id, virtbase + COH901318_TC_INT_CLEAR1);
- } else {
- writel(1 << (cohc->id - 32), virtbase +
- COH901318_BE_INT_CLEAR2);
- writel(1 << (cohc->id - 32), virtbase +
- COH901318_TC_INT_CLEAR2);
- }
-
- enable_powersave(cohc);
-
- while ((cohd = coh901318_first_active_get(cohc))) {
- /* release the lli allocation*/
- coh901318_lli_free(&cohc->base->pool, &cohd->lli);
-
- /* return desc to free-list */
- coh901318_desc_remove(cohd);
- coh901318_desc_free(cohc, cohd);
- }
-
- while ((cohd = coh901318_first_queued(cohc))) {
- /* release the lli allocation*/
- coh901318_lli_free(&cohc->base->pool, &cohd->lli);
-
- /* return desc to free-list */
- coh901318_desc_remove(cohd);
- coh901318_desc_free(cohc, cohd);
- }
-
-
- cohc->nbr_active_done = 0;
- cohc->busy = 0;
-
- spin_unlock_irqrestore(&cohc->lock, flags);
-
- return 0;
-}
-
void coh901318_base_init(struct dma_device *dma, const int *pick_chans,
struct coh901318_base *base)
{
@@ -2717,7 +2694,10 @@ static int __init coh901318_probe(struct platform_device *pdev)
base->dma_slave.device_prep_slave_sg = coh901318_prep_slave_sg;
base->dma_slave.device_tx_status = coh901318_tx_status;
base->dma_slave.device_issue_pending = coh901318_issue_pending;
- base->dma_slave.device_control = coh901318_control;
+ base->dma_slave.device_config = coh901318_dma_set_runtimeconfig;
+ base->dma_slave.device_pause = coh901318_pause;
+ base->dma_slave.device_resume = coh901318_resume;
+ base->dma_slave.device_terminate_all = coh901318_terminate_all;
base->dma_slave.dev = &pdev->dev;
err = dma_async_device_register(&base->dma_slave);
@@ -2737,7 +2717,10 @@ static int __init coh901318_probe(struct platform_device *pdev)
base->dma_memcpy.device_prep_dma_memcpy = coh901318_prep_memcpy;
base->dma_memcpy.device_tx_status = coh901318_tx_status;
base->dma_memcpy.device_issue_pending = coh901318_issue_pending;
- base->dma_memcpy.device_control = coh901318_control;
+ base->dma_memcpy.device_config = coh901318_dma_set_runtimeconfig;
+ base->dma_memcpy.device_pause = coh901318_pause;
+ base->dma_memcpy.device_resume = coh901318_resume;
+ base->dma_memcpy.device_terminate_all = coh901318_terminate_all;
base->dma_memcpy.dev = &pdev->dev;
/*
* This controller can only access address at even 32bit boundaries,
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