Commit e3fa49ac authored by Alexandre Bailon's avatar Alexandre Bailon Committed by Vinod Koul
Browse files

dmaengine: cppi41: Add support of DA8xx to CPPI 4.1 



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: default avatarAlexandre Bailon <abailon@baylibre.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent d567206e

drivers/dma/Kconfig

+3 −3
Original line number Diff line number Diff line
@@ -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

drivers/dma/cppi41.c

+23 −0
Original line number Diff line number Diff line
@@ -223,6 +223,20 @@ 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;
@@ -971,8 +985,17 @@ 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);