[PATCHv6 4/5] USB: gadget: atmel_usba_udc: Prepare for IRQ single edge support

[Sylvain Rochet]

Renamed struct usba_udc_errata to struct usba_udc_caps, we are adding a
new property which is not about errata, this way the struct is not
misnamed.

New struct usba_udc_caps property: irq_single_edge_support, boolean,
set to true if the board supports IRQ_TYPE_EDGE_FALLING and
IRQ_TYPE_EDGE_RISING, otherwise set to false.

Signed-off-by: Sylvain Rochet <sylvain.rochet at finsecur.com>
---
 drivers/usb/gadget/udc/atmel_usba_udc.c | 25 +++++++++++++++----------
 drivers/usb/gadget/udc/atmel_usba_udc.h |  5 +++--
 2 files changed, 18 insertions(+), 12 deletions(-)

diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c
index d554106..361f740 100644
--- a/drivers/usb/gadget/udc/atmel_usba_udc.c
+++ b/drivers/usb/gadget/udc/atmel_usba_udc.c
@@ -338,8 +338,8 @@ static int vbus_is_present(struct usba_udc *udc)
 
 static void toggle_bias(struct usba_udc *udc, int is_on)
 {
-	if (udc->errata && udc->errata->toggle_bias)
-		udc->errata->toggle_bias(udc, is_on);
+	if (udc->caps && udc->caps->toggle_bias)
+		udc->caps->toggle_bias(udc, is_on);
 }
 
 static void generate_bias_pulse(struct usba_udc *udc)
@@ -347,8 +347,8 @@ static void generate_bias_pulse(struct usba_udc *udc)
 	if (!udc->bias_pulse_needed)
 		return;
 
-	if (udc->errata && udc->errata->pulse_bias)
-		udc->errata->pulse_bias(udc);
+	if (udc->caps && udc->caps->pulse_bias)
+		udc->caps->pulse_bias(udc);
 
 	udc->bias_pulse_needed = false;
 }
@@ -1901,18 +1901,23 @@ static void at91sam9g45_pulse_bias(struct usba_udc *udc)
 	at91_pmc_write(AT91_CKGR_UCKR, uckr | AT91_PMC_BIASEN);
 }
 
-static const struct usba_udc_errata at91sam9rl_errata = {
+static const struct usba_udc_caps at91sam9rl_caps = {
 	.toggle_bias = at91sam9rl_toggle_bias,
 };
 
-static const struct usba_udc_errata at91sam9g45_errata = {
+static const struct usba_udc_caps at91sam9g45_caps = {
 	.pulse_bias = at91sam9g45_pulse_bias,
+	.irq_single_edge_support = true,
+};
+
+static const struct usba_udc_caps sama5d3_caps = {
+	.irq_single_edge_support = true,
 };
 
 static const struct of_device_id atmel_udc_dt_ids[] = {
-	{ .compatible = "atmel,at91sam9rl-udc", .data = &at91sam9rl_errata },
-	{ .compatible = "atmel,at91sam9g45-udc", .data = &at91sam9g45_errata },
-	{ .compatible = "atmel,sama5d3-udc" },
+	{ .compatible = "atmel,at91sam9rl-udc", .data = &at91sam9rl_caps },
+	{ .compatible = "atmel,at91sam9g45-udc", .data = &at91sam9g45_caps },
+	{ .compatible = "atmel,sama5d3-udc", .data = &sama5d3_caps },
 	{ /* sentinel */ }
 };
 
@@ -1934,7 +1939,7 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev,
 	if (!match)
 		return ERR_PTR(-EINVAL);
 
-	udc->errata = match->data;
+	udc->caps = match->data;
 
 	udc->num_ep = 0;
 
diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.h b/drivers/usb/gadget/udc/atmel_usba_udc.h
index 085749a..4fe4c87 100644
--- a/drivers/usb/gadget/udc/atmel_usba_udc.h
+++ b/drivers/usb/gadget/udc/atmel_usba_udc.h
@@ -304,9 +304,10 @@ struct usba_request {
 	unsigned int				mapped:1;
 };
 
-struct usba_udc_errata {
+struct usba_udc_caps {
 	void (*toggle_bias)(struct usba_udc *udc, int is_on);
 	void (*pulse_bias)(struct usba_udc *udc);
+	bool irq_single_edge_support;
 };
 
 struct usba_udc {
@@ -322,7 +323,7 @@ struct usba_udc {
 	struct usb_gadget gadget;
 	struct usb_gadget_driver *driver;
 	struct platform_device *pdev;
-	const struct usba_udc_errata *errata;
+	const struct usba_udc_caps *caps;
 	int irq;
 	int vbus_pin;
 	int vbus_pin_inverted;
-- 
2.1.4