The DA8xx has a CPPI 4.1 DMA controller.
This is add the glue layer required to make it work on DA8xx.
Signed-off-by: Alexandre Bailon <abailon@xxxxxxxxxxxx>
---
drivers/dma/Kconfig | 6 +++---
drivers/dma/cppi41.c | 23 +++++++++++++++++++++++
2 files changed, 26 insertions(+), 3 deletions(-)
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index 0d6a96e..2a31e1a 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -514,12 +514,12 @@ config TIMB_DMA
Enable support for the Timberdale FPGA DMA engine.
config TI_CPPI41
- tristate "AM33xx CPPI41 DMA support"
- depends on ARCH_OMAP
+ tristate "CPPI 4.1 DMA support"
+ depends on (ARCH_OMAP || ARCH_DAVINCI_DA8XX)
select DMA_ENGINE
help
The Communications Port Programming Interface (CPPI) 4.1 DMA engine
- is currently used by the USB driver on AM335x platforms.
+ is currently used by the USB driver on AM335x and DA8xx platforms.
config TI_DMA_CROSSBAR
bool
diff --git a/drivers/dma/cppi41.c b/drivers/dma/cppi41.c
index 21a4f79..5c501da 100644
--- a/drivers/dma/cppi41.c
+++ b/drivers/dma/cppi41.c
@@ -221,6 +221,20 @@ static const struct chan_queues am335x_usb_queues_rx[] = {
[29] = { .submit = 30, .complete = 155},
};
+static const struct chan_queues da8xx_usb_queues_tx[] = {
+ [0] = { .submit = 16, .complete = 24},
+ [1] = { .submit = 18, .complete = 24},
+ [2] = { .submit = 20, .complete = 24},
+ [3] = { .submit = 22, .complete = 24},
+};
+
+static const struct chan_queues da8xx_usb_queues_rx[] = {
+ [0] = { .submit = 1, .complete = 26},
+ [1] = { .submit = 3, .complete = 26},
+ [2] = { .submit = 5, .complete = 26},
+ [3] = { .submit = 7, .complete = 26},
+};
+
struct cppi_glue_infos {
const struct chan_queues *queues_rx;
const struct chan_queues *queues_tx;
@@ -949,8 +963,17 @@ static const struct cppi_glue_infos am335x_usb_infos = {
.qmgr_num_pend = 5,
};
+static const struct cppi_glue_infos da8xx_usb_infos = {
+ .queues_rx = da8xx_usb_queues_rx,
+ .queues_tx = da8xx_usb_queues_tx,
+ .td_queue = { .submit = 31, .complete = 0 },
+ .first_completion_queue = 24,
+ .qmgr_num_pend = 2,
+};
+
static const struct of_device_id cppi41_dma_ids[] = {
{ .compatible = "ti,am3359-cppi41", .data = &am335x_usb_infos},
+ { .compatible = "ti,da830-cppi41", .data = &da8xx_usb_infos},
{},
};
MODULE_DEVICE_TABLE(of, cppi41_dma_ids);
--
2.10.2
--
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