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Message-Id: <1593702489-21648-2-git-send-email-yibin.gong@nxp.com>
Date: Thu, 2 Jul 2020 23:08:01 +0800
From: Robin Gong <yibin.gong@....com>
To: vkoul@...nel.org, robh+dt@...nel.org, shawnguo@...nel.org,
s.hauer@...gutronix.de, festevam@...il.com,
catalin.marinas@....com, will@...nel.org, dan.j.williams@...el.com,
angelo@...am.it
Cc: kernel@...gutronix.de, linux-imx@....com,
dmaengine@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v1 1/9] dmaengine: fsl-edma: move edma_request functions into drvdata
Move fsl_edma_enable_request/fsl_edma_disable_request into drvdata so
that later edma3 could easily be added.
Signed-off-by: Robin Gong <yibin.gong@....com>
---
drivers/dma/fsl-edma-common.c | 13 +++++++------
drivers/dma/fsl-edma-common.h | 3 +++
drivers/dma/fsl-edma.c | 10 ++++++++--
drivers/dma/mcf-edma.c | 2 ++
4 files changed, 20 insertions(+), 8 deletions(-)
diff --git a/drivers/dma/fsl-edma-common.c b/drivers/dma/fsl-edma-common.c
index 4550818..ef5294f0 100644
--- a/drivers/dma/fsl-edma-common.c
+++ b/drivers/dma/fsl-edma-common.c
@@ -42,7 +42,7 @@
#define EDMA_TCD 0x1000
-static void fsl_edma_enable_request(struct fsl_edma_chan *fsl_chan)
+void fsl_edma_enable_request(struct fsl_edma_chan *fsl_chan)
{
struct edma_regs *regs = &fsl_chan->edma->regs;
u32 ch = fsl_chan->vchan.chan.chan_id;
@@ -58,6 +58,7 @@ static void fsl_edma_enable_request(struct fsl_edma_chan *fsl_chan)
iowrite8(ch, regs->serq);
}
}
+EXPORT_SYMBOL_GPL(fsl_edma_enable_request);
void fsl_edma_disable_request(struct fsl_edma_chan *fsl_chan)
{
@@ -164,7 +165,7 @@ int fsl_edma_terminate_all(struct dma_chan *chan)
LIST_HEAD(head);
spin_lock_irqsave(&fsl_chan->vchan.lock, flags);
- fsl_edma_disable_request(fsl_chan);
+ fsl_chan->edma->drvdata->dis_req(fsl_chan);
fsl_chan->edesc = NULL;
fsl_chan->idle = true;
vchan_get_all_descriptors(&fsl_chan->vchan, &head);
@@ -181,7 +182,7 @@ int fsl_edma_pause(struct dma_chan *chan)
spin_lock_irqsave(&fsl_chan->vchan.lock, flags);
if (fsl_chan->edesc) {
- fsl_edma_disable_request(fsl_chan);
+ fsl_chan->edma->drvdata->dis_req(fsl_chan);
fsl_chan->status = DMA_PAUSED;
fsl_chan->idle = true;
}
@@ -197,7 +198,7 @@ int fsl_edma_resume(struct dma_chan *chan)
spin_lock_irqsave(&fsl_chan->vchan.lock, flags);
if (fsl_chan->edesc) {
- fsl_edma_enable_request(fsl_chan);
+ fsl_chan->edma->drvdata->en_req(fsl_chan);
fsl_chan->status = DMA_IN_PROGRESS;
fsl_chan->idle = false;
}
@@ -596,7 +597,7 @@ void fsl_edma_xfer_desc(struct fsl_edma_chan *fsl_chan)
return;
fsl_chan->edesc = to_fsl_edma_desc(vdesc);
fsl_edma_set_tcd_regs(fsl_chan, fsl_chan->edesc->tcd[0].vtcd);
- fsl_edma_enable_request(fsl_chan);
+ fsl_chan->edma->drvdata->en_req(fsl_chan);
fsl_chan->status = DMA_IN_PROGRESS;
fsl_chan->idle = false;
}
@@ -640,7 +641,7 @@ void fsl_edma_free_chan_resources(struct dma_chan *chan)
LIST_HEAD(head);
spin_lock_irqsave(&fsl_chan->vchan.lock, flags);
- fsl_edma_disable_request(fsl_chan);
+ fsl_chan->edma->drvdata->dis_req(fsl_chan);
fsl_edma_chan_mux(fsl_chan, 0, false);
fsl_chan->edesc = NULL;
vchan_get_all_descriptors(&fsl_chan->vchan, &head);
diff --git a/drivers/dma/fsl-edma-common.h b/drivers/dma/fsl-edma-common.h
index ec11697..87c8d7a 100644
--- a/drivers/dma/fsl-edma-common.h
+++ b/drivers/dma/fsl-edma-common.h
@@ -150,6 +150,8 @@ struct fsl_edma_drvdata {
bool mux_swap;
int (*setup_irq)(struct platform_device *pdev,
struct fsl_edma_engine *fsl_edma);
+ void (*en_req)(struct fsl_edma_chan *fsl_chan);
+ void (*dis_req)(struct fsl_edma_chan *fsl_chan);
};
struct fsl_edma_engine {
@@ -222,6 +224,7 @@ static inline struct fsl_edma_desc *to_fsl_edma_desc(struct virt_dma_desc *vd)
}
void fsl_edma_disable_request(struct fsl_edma_chan *fsl_chan);
+void fsl_edma_enable_request(struct fsl_edma_chan *fsl_chan);
void fsl_edma_chan_mux(struct fsl_edma_chan *fsl_chan,
unsigned int slot, bool enable);
void fsl_edma_free_desc(struct virt_dma_desc *vdesc);
diff --git a/drivers/dma/fsl-edma.c b/drivers/dma/fsl-edma.c
index 90bb72a..95745636 100644
--- a/drivers/dma/fsl-edma.c
+++ b/drivers/dma/fsl-edma.c
@@ -83,7 +83,7 @@ static irqreturn_t fsl_edma_err_handler(int irq, void *dev_id)
for (ch = 0; ch < fsl_edma->n_chans; ch++) {
if (err & (0x1 << ch)) {
- fsl_edma_disable_request(&fsl_edma->chans[ch]);
+ fsl_edma->drvdata->dis_req(&fsl_edma->chans[ch]);
edma_writeb(fsl_edma, EDMA_CERR_CERR(ch), regs->cerr);
fsl_edma->chans[ch].status = DMA_ERROR;
fsl_edma->chans[ch].idle = true;
@@ -238,6 +238,8 @@ static struct fsl_edma_drvdata vf610_data = {
.version = v1,
.dmamuxs = DMAMUX_NR,
.setup_irq = fsl_edma_irq_init,
+ .en_req = fsl_edma_enable_request,
+ .dis_req = fsl_edma_disable_request,
};
static struct fsl_edma_drvdata ls1028a_data = {
@@ -245,6 +247,8 @@ static struct fsl_edma_drvdata ls1028a_data = {
.dmamuxs = DMAMUX_NR,
.mux_swap = true,
.setup_irq = fsl_edma_irq_init,
+ .en_req = fsl_edma_enable_request,
+ .dis_req = fsl_edma_disable_request,
};
static struct fsl_edma_drvdata imx7ulp_data = {
@@ -252,6 +256,8 @@ static struct fsl_edma_drvdata imx7ulp_data = {
.dmamuxs = 1,
.has_dmaclk = true,
.setup_irq = fsl_edma2_irq_init,
+ .en_req = fsl_edma_enable_request,
+ .dis_req = fsl_edma_disable_request,
};
static const struct of_device_id fsl_edma_dt_ids[] = {
@@ -444,7 +450,7 @@ static int fsl_edma_suspend_late(struct device *dev)
/* Make sure chan is idle or will force disable. */
if (unlikely(!fsl_chan->idle)) {
dev_warn(dev, "WARN: There is non-idle channel.");
- fsl_edma_disable_request(fsl_chan);
+ fsl_edma->drvdata->dis_req(fsl_chan);
fsl_edma_chan_mux(fsl_chan, 0, false);
}
diff --git a/drivers/dma/mcf-edma.c b/drivers/dma/mcf-edma.c
index e12b754..50e6b9b 100644
--- a/drivers/dma/mcf-edma.c
+++ b/drivers/dma/mcf-edma.c
@@ -174,6 +174,8 @@ static void mcf_edma_irq_free(struct platform_device *pdev,
static struct fsl_edma_drvdata mcf_data = {
.version = v2,
.setup_irq = mcf_edma_irq_init,
+ .en_req = fsl_edma_enable_request,
+ .dis_req = fsl_edma_disable_request,
};
static int mcf_edma_probe(struct platform_device *pdev)
--
2.7.4
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