Commit 26b32424 authored by Cristian Birsan's avatar Cristian Birsan Committed by Felipe Balbi
Browse files

usb: gadget: udc: atmel: update endpoint allocation for sam9x60 



The DPRAM memory from the USB High Speed Device Port (UDPHS) hardware
block was increased. This patch updates the endpoint allocation for sam9x60
to take advantage of this larger memory. At the same time the
constraint to allocate the endpoints in order was lifted. To handle old
and new hardware in the same driver the ep_prealloc was added.

Signed-off-by: default avatarCristian Birsan <cristian.birsan@microchip.com>
Signed-off-by: default avatarFelipe Balbi <balbi@kernel.org>
parent 5b041a30

drivers/usb/gadget/udc/atmel_usba_udc.c

+17 −3
Original line number Diff line number Diff line
@@ -1061,11 +1061,13 @@ found_ep: 


		case USB_ENDPOINT_XFER_ISOC:

			ep->fifo_size = 1024;

			if (ep->udc->ep_prealloc)

				ep->nr_banks = 2;

			break;



		case USB_ENDPOINT_XFER_BULK:

			ep->fifo_size = 512;

			if (ep->udc->ep_prealloc)

				ep->nr_banks = 1;

			break;
@@ -1076,6 +1078,7 @@ found_ep: 
			else

				ep->fifo_size =

				    roundup_pow_of_two(le16_to_cpu(desc->wMaxPacketSize));

			if (ep->udc->ep_prealloc)

				ep->nr_banks = 1;

			break;

		}
@@ -2087,23 +2090,33 @@ static const struct usba_udc_config udc_at91sam9rl_cfg = { 
	.errata = &at91sam9rl_errata,

	.config = ep_config_sam9,

	.num_ep = ARRAY_SIZE(ep_config_sam9),

	.ep_prealloc = true,

};



static const struct usba_udc_config udc_at91sam9g45_cfg = {

	.errata = &at91sam9g45_errata,

	.config = ep_config_sam9,

	.num_ep = ARRAY_SIZE(ep_config_sam9),

	.ep_prealloc = true,

};



static const struct usba_udc_config udc_sama5d3_cfg = {

	.config = ep_config_sama5,

	.num_ep = ARRAY_SIZE(ep_config_sama5),

	.ep_prealloc = true,

};



static const struct usba_udc_config udc_sam9x60_cfg = {

	.num_ep = ARRAY_SIZE(ep_config_sam9),

	.config = ep_config_sam9,

	.ep_prealloc = false,

};



static const struct of_device_id atmel_udc_dt_ids[] = {

	{ .compatible = "atmel,at91sam9rl-udc", .data = &udc_at91sam9rl_cfg },

	{ .compatible = "atmel,at91sam9g45-udc", .data = &udc_at91sam9g45_cfg },

	{ .compatible = "atmel,sama5d3-udc", .data = &udc_sama5d3_cfg },

	{ .compatible = "microchip,sam9x60-udc", .data = &udc_sam9x60_cfg },

	{ /* sentinel */ }

};
@@ -2131,6 +2144,7 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, 
		return ERR_PTR(-EINVAL);



	udc_config = match->data;

	udc->ep_prealloc = udc_config->ep_prealloc;

	udc->errata = udc_config->errata;

	if (udc->errata) {

		pp = of_find_matching_node_and_match(NULL, atmel_pmc_dt_ids,

drivers/usb/gadget/udc/atmel_usba_udc.h

+2 −0
Original line number Diff line number Diff line
@@ -317,6 +317,7 @@ struct usba_udc_config { 
	const struct usba_udc_errata *errata;

	const struct usba_ep_config *config;

	const int num_ep;

	const bool ep_prealloc;

};



struct usba_udc {
@@ -343,6 +344,7 @@ struct usba_udc { 
	bool bias_pulse_needed;

	bool clocked;

	bool suspended;

	bool ep_prealloc;



	u16 devstatus;

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