From: Youlin Wang <wwx575...@notesmail.huawei.com>
There is an new "hisi-pcm-asp-dma-1.0" device added in
"arch/arm64/boot/dts/hisilicon/hi3660.dtsi".
So we have to add a matching id in the driver file:
.compatible = "hisilicon,hisi-pcm-asp-dma-1.0"
And also hisi-pcm-asp dma device needs no setting to the clock.
So we skip this by adding and using soc data flags.
After above this driver will support both k3 and hisi_asp dma hardware.
Cc: Dan Williams <dan.j.willi...@intel.com>
Cc: Vinod Koul <vk...@kernel.org>
Cc: Zhuangluan Su <suzhuangl...@hisilicon.com>
Cc: Ryan Grachek <r...@edited.us>
Cc: Manivannan Sadhasivam <manivannan.sadhasi...@linaro.org>
Cc: dmaeng...@vger.kernel.org
Signed-off-by: Youlin Wang <wwx575...@notesmail.huawei.com>
Signed-off-by: Tanglei Han <hantang...@huawei.com>
[jstultz: Reworked to use of_match_data]
Signed-off-by: John Stultz <john.stu...@linaro.org>
---
v2:
* Reworked to use of_match_data
---
drivers/dma/k3dma.c | 37 ++++++++++++++++++++++++++++++++-----
1 file changed, 32 insertions(+), 5 deletions(-)
diff --git a/drivers/dma/k3dma.c b/drivers/dma/k3dma.c
index fdec2b6..df61406 100644
--- a/drivers/dma/k3dma.c
+++ b/drivers/dma/k3dma.c
@@ -116,6 +116,13 @@ struct k3_dma_dev {
unsigned int irq;
};
+
+#define K3_FLAG_NOCLK (1<<0)
+struct k3dma_soc_data {
+ unsigned long flags;
+};
+
+
#define to_k3_dma(dmadev) container_of(dmadev, struct k3_dma_dev, slave)
static int k3_dma_config_write(struct dma_chan *chan,
@@ -790,8 +797,21 @@ static int k3_dma_transfer_resume(struct dma_chan *chan)
return 0;
}
+static const struct k3dma_soc_data k3_v1_dma_data = {
+ .flags = 0,
+};
+
+static const struct k3dma_soc_data asp_v1_dma_data = {
+ .flags = K3_FLAG_NOCLK,
+};
+
static const struct of_device_id k3_pdma_dt_ids[] = {
- { .compatible = "hisilicon,k3-dma-1.0", },
+ { .compatible = "hisilicon,k3-dma-1.0",
+ .data = &k3_v1_dma_data
+ },
+ { .compatible = "hisilicon,hisi-pcm-asp-dma-1.0",
+ .data = &asp_v1_dma_data
+ },
{}
};
MODULE_DEVICE_TABLE(of, k3_pdma_dt_ids);
@@ -810,6 +830,7 @@ static struct dma_chan *k3_of_dma_simple_xlate(struct
of_phandle_args *dma_spec,
static int k3_dma_probe(struct platform_device *op)
{
+ const struct k3dma_soc_data *soc_data;
struct k3_dma_dev *d;
const struct of_device_id *of_id;
struct resource *iores;
@@ -823,6 +844,10 @@ static int k3_dma_probe(struct platform_device *op)
if (!d)
return -ENOMEM;
+ soc_data = device_get_match_data(&op->dev);
+ if (!soc_data)
+ return -EINVAL;
+
d->base = devm_ioremap_resource(&op->dev, iores);
if (IS_ERR(d->base))
return PTR_ERR(d->base);
@@ -835,10 +860,12 @@ static int k3_dma_probe(struct platform_device *op)
"dma-requests", &d->dma_requests);
}
- d->clk = devm_clk_get(&op->dev, NULL);
- if (IS_ERR(d->clk)) {
- dev_err(&op->dev, "no dma clk\n");
- return PTR_ERR(d->clk);
+ if (!(soc_data->flags & K3_FLAG_NOCLK)) {
+ d->clk = devm_clk_get(&op->dev, NULL);
+ if (IS_ERR(d->clk)) {
+ dev_err(&op->dev, "no dma clk\n");
+ return PTR_ERR(d->clk);
+ }
}
irq = platform_get_irq(op, 0);
--
2.7.4
