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path: root/drivers/dma/ti/k3-udma.c
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Diffstat (limited to 'drivers/dma/ti/k3-udma.c')
-rw-r--r--drivers/dma/ti/k3-udma.c75
1 files changed, 66 insertions, 9 deletions
diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
index 7e23a6fdef95..fc3a2a05ab7b 100644
--- a/drivers/dma/ti/k3-udma.c
+++ b/drivers/dma/ti/k3-udma.c
@@ -305,6 +305,8 @@ struct udma_chan {
/* Channel configuration parameters */
struct udma_chan_config config;
+ /* Channel configuration parameters (backup) */
+ struct udma_chan_config backup_config;
/* dmapool for packet mode descriptors */
bool use_dma_pool;
@@ -2964,6 +2966,7 @@ udma_prep_slave_sg_triggered_tr(struct udma_chan *uc, struct scatterlist *sgl,
struct scatterlist *sgent;
struct cppi5_tr_type15_t *tr_req = NULL;
enum dma_slave_buswidth dev_width;
+ u32 csf = CPPI5_TR_CSF_SUPR_EVT;
u16 tr_cnt0, tr_cnt1;
dma_addr_t dev_addr;
struct udma_desc *d;
@@ -3034,6 +3037,7 @@ udma_prep_slave_sg_triggered_tr(struct udma_chan *uc, struct scatterlist *sgl,
if (uc->ud->match_data->type == DMA_TYPE_UDMA) {
asel = 0;
+ csf |= CPPI5_TR_CSF_EOL_ICNT0;
} else {
asel = (u64)uc->config.asel << K3_ADDRESS_ASEL_SHIFT;
dev_addr |= asel;
@@ -3057,7 +3061,7 @@ udma_prep_slave_sg_triggered_tr(struct udma_chan *uc, struct scatterlist *sgl,
cppi5_tr_init(&tr_req[tr_idx].flags, CPPI5_TR_TYPE15, false,
true, CPPI5_TR_EVENT_SIZE_COMPLETION, 0);
- cppi5_tr_csf_set(&tr_req[tr_idx].flags, CPPI5_TR_CSF_SUPR_EVT);
+ cppi5_tr_csf_set(&tr_req[tr_idx].flags, csf);
cppi5_tr_set_trigger(&tr_req[tr_idx].flags,
uc->config.tr_trigger_type,
CPPI5_TR_TRIGGER_TYPE_ICNT2_DEC, 0, 0);
@@ -3103,8 +3107,7 @@ udma_prep_slave_sg_triggered_tr(struct udma_chan *uc, struct scatterlist *sgl,
cppi5_tr_init(&tr_req[tr_idx].flags, CPPI5_TR_TYPE15,
false, true,
CPPI5_TR_EVENT_SIZE_COMPLETION, 0);
- cppi5_tr_csf_set(&tr_req[tr_idx].flags,
- CPPI5_TR_CSF_SUPR_EVT);
+ cppi5_tr_csf_set(&tr_req[tr_idx].flags, csf);
cppi5_tr_set_trigger(&tr_req[tr_idx].flags,
uc->config.tr_trigger_type,
CPPI5_TR_TRIGGER_TYPE_ICNT2_DEC,
@@ -3148,8 +3151,7 @@ udma_prep_slave_sg_triggered_tr(struct udma_chan *uc, struct scatterlist *sgl,
d->residue += sg_len;
}
- cppi5_tr_csf_set(&tr_req[tr_idx - 1].flags,
- CPPI5_TR_CSF_SUPR_EVT | CPPI5_TR_CSF_EOP);
+ cppi5_tr_csf_set(&tr_req[tr_idx - 1].flags, csf | CPPI5_TR_CSF_EOP);
return d;
}
@@ -3678,6 +3680,7 @@ udma_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
int num_tr;
size_t tr_size = sizeof(struct cppi5_tr_type15_t);
u16 tr0_cnt0, tr0_cnt1, tr1_cnt0;
+ u32 csf = CPPI5_TR_CSF_SUPR_EVT;
if (uc->config.dir != DMA_MEM_TO_MEM) {
dev_err(chan->device->dev,
@@ -3708,13 +3711,15 @@ udma_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
if (uc->ud->match_data->type != DMA_TYPE_UDMA) {
src |= (u64)uc->ud->asel << K3_ADDRESS_ASEL_SHIFT;
dest |= (u64)uc->ud->asel << K3_ADDRESS_ASEL_SHIFT;
+ } else {
+ csf |= CPPI5_TR_CSF_EOL_ICNT0;
}
tr_req = d->hwdesc[0].tr_req_base;
cppi5_tr_init(&tr_req[0].flags, CPPI5_TR_TYPE15, false, true,
CPPI5_TR_EVENT_SIZE_COMPLETION, 0);
- cppi5_tr_csf_set(&tr_req[0].flags, CPPI5_TR_CSF_SUPR_EVT);
+ cppi5_tr_csf_set(&tr_req[0].flags, csf);
tr_req[0].addr = src;
tr_req[0].icnt0 = tr0_cnt0;
@@ -3733,7 +3738,7 @@ udma_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
if (num_tr == 2) {
cppi5_tr_init(&tr_req[1].flags, CPPI5_TR_TYPE15, false, true,
CPPI5_TR_EVENT_SIZE_COMPLETION, 0);
- cppi5_tr_csf_set(&tr_req[1].flags, CPPI5_TR_CSF_SUPR_EVT);
+ cppi5_tr_csf_set(&tr_req[1].flags, csf);
tr_req[1].addr = src + tr0_cnt1 * tr0_cnt0;
tr_req[1].icnt0 = tr1_cnt0;
@@ -3748,8 +3753,7 @@ udma_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
tr_req[1].dicnt3 = 1;
}
- cppi5_tr_csf_set(&tr_req[num_tr - 1].flags,
- CPPI5_TR_CSF_SUPR_EVT | CPPI5_TR_CSF_EOP);
+ cppi5_tr_csf_set(&tr_req[num_tr - 1].flags, csf | CPPI5_TR_CSF_EOP);
if (uc->config.metadata_size)
d->vd.tx.metadata_ops = &metadata_ops;
@@ -4412,6 +4416,7 @@ static const struct soc_device_attribute k3_soc_devices[] = {
{ .family = "J721S2", .data = &j721e_soc_data},
{ .family = "AM62X", .data = &am64_soc_data },
{ .family = "AM62AX", .data = &am64_soc_data },
+ { .family = "J784S4", .data = &j721e_soc_data },
{ /* sentinel */ }
};
@@ -5522,11 +5527,63 @@ static int udma_probe(struct platform_device *pdev)
return ret;
}
+static int udma_pm_suspend(struct device *dev)
+{
+ struct udma_dev *ud = dev_get_drvdata(dev);
+ struct dma_device *dma_dev = &ud->ddev;
+ struct dma_chan *chan;
+ struct udma_chan *uc;
+
+ list_for_each_entry(chan, &dma_dev->channels, device_node) {
+ if (chan->client_count) {
+ uc = to_udma_chan(chan);
+ /* backup the channel configuration */
+ memcpy(&uc->backup_config, &uc->config,
+ sizeof(struct udma_chan_config));
+ dev_dbg(dev, "Suspending channel %s\n",
+ dma_chan_name(chan));
+ ud->ddev.device_free_chan_resources(chan);
+ }
+ }
+
+ return 0;
+}
+
+static int udma_pm_resume(struct device *dev)
+{
+ struct udma_dev *ud = dev_get_drvdata(dev);
+ struct dma_device *dma_dev = &ud->ddev;
+ struct dma_chan *chan;
+ struct udma_chan *uc;
+ int ret;
+
+ list_for_each_entry(chan, &dma_dev->channels, device_node) {
+ if (chan->client_count) {
+ uc = to_udma_chan(chan);
+ /* restore the channel configuration */
+ memcpy(&uc->config, &uc->backup_config,
+ sizeof(struct udma_chan_config));
+ dev_dbg(dev, "Resuming channel %s\n",
+ dma_chan_name(chan));
+ ret = ud->ddev.device_alloc_chan_resources(chan);
+ if (ret)
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static const struct dev_pm_ops udma_pm_ops = {
+ SET_LATE_SYSTEM_SLEEP_PM_OPS(udma_pm_suspend, udma_pm_resume)
+};
+
static struct platform_driver udma_driver = {
.driver = {
.name = "ti-udma",
.of_match_table = udma_of_match,
.suppress_bind_attrs = true,
+ .pm = &udma_pm_ops,
},
.probe = udma_probe,
};
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-30 11:26:04 +0300