diff mbox

[v3,4/9] usb: dwc3: core: Adapt to named interrupts

Message ID 1436351795-28556-1-git-send-email-rogerq@ti.com (mailing list archive)
State New, archived
Headers show

Commit Message

Roger Quadros July 8, 2015, 10:36 a.m. UTC
From: Felipe Balbi <balbi@ti.com>

Add support to use interrupt names,

Following are the interrupt names

Peripheral Interrupt - peripheral
HOST Interrupt - host
OTG Interrupt - otg

[Roger Q]
- If any of these are missing we use the
first available IRQ resource so that we don't
break with older DTBs.

- Use gadget_irq in gadget driver.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
---
 drivers/usb/dwc3/core.c   | 12 ++++++++++++
 drivers/usb/dwc3/core.h   |  7 +++++++
 drivers/usb/dwc3/gadget.c |  2 +-
 3 files changed, 20 insertions(+), 1 deletion(-)

Comments

Sergei Shtylyov July 8, 2015, 1:06 p.m. UTC | #1
Hello.

On 7/8/2015 1:36 PM, Roger Quadros wrote:

> From: Felipe Balbi <balbi@ti.com>

> Add support to use interrupt names,

> Following are the interrupt names

> Peripheral Interrupt - peripheral
> HOST Interrupt - host
> OTG Interrupt - otg

> [Roger Q]
> - If any of these are missing we use the
> first available IRQ resource so that we don't
> break with older DTBs.

> - Use gadget_irq in gadget driver.

> Signed-off-by: Felipe Balbi <balbi@ti.com>
> Signed-off-by: Roger Quadros <rogerq@ti.com>
> ---
>   drivers/usb/dwc3/core.c   | 12 ++++++++++++
>   drivers/usb/dwc3/core.h   |  7 +++++++
>   drivers/usb/dwc3/gadget.c |  2 +-
>   3 files changed, 20 insertions(+), 1 deletion(-)

> diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
> index a7498e0..7b33d7b 100644
> --- a/drivers/usb/dwc3/core.c
> +++ b/drivers/usb/dwc3/core.c
> @@ -941,6 +941,18 @@ static int dwc3_probe(struct platform_device *pdev)
>   	dwc->xhci_resources[1].flags = res->flags;
>   	dwc->xhci_resources[1].name = res->name;
>
> +	dwc->otg_irq = platform_get_irq_byname(pdev, "otg");
> +	if (!dwc->otg_irq)

    The usual mistake repeated again: that function reutrns error # on 
failure, not 0.

> +		dwc->otg_irq = res->start;
> +
> +	dwc->gadget_irq = platform_get_irq_byname(pdev, "peripheral");
> +	if (!dwc->gadget_irq)
> +		dwc->gadget_irq = res->start;

    Likewise.

> +
> +	dwc->xhci_irq = platform_get_irq_byname(pdev, "host");
> +	if (!dwc->xhci_irq)

    Likewise.

[...]

WBR, Sergei

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Roger Quadros July 8, 2015, 2:43 p.m. UTC | #2
Hi,

On 08/07/15 16:06, Sergei Shtylyov wrote:
> Hello.
> 
> On 7/8/2015 1:36 PM, Roger Quadros wrote:
> 
>> From: Felipe Balbi <balbi@ti.com>
> 
>> Add support to use interrupt names,
> 
>> Following are the interrupt names
> 
>> Peripheral Interrupt - peripheral
>> HOST Interrupt - host
>> OTG Interrupt - otg
> 
>> [Roger Q]
>> - If any of these are missing we use the
>> first available IRQ resource so that we don't
>> break with older DTBs.
> 
>> - Use gadget_irq in gadget driver.
> 
>> Signed-off-by: Felipe Balbi <balbi@ti.com>
>> Signed-off-by: Roger Quadros <rogerq@ti.com>
>> ---
>>   drivers/usb/dwc3/core.c   | 12 ++++++++++++
>>   drivers/usb/dwc3/core.h   |  7 +++++++
>>   drivers/usb/dwc3/gadget.c |  2 +-
>>   3 files changed, 20 insertions(+), 1 deletion(-)
> 
>> diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
>> index a7498e0..7b33d7b 100644
>> --- a/drivers/usb/dwc3/core.c
>> +++ b/drivers/usb/dwc3/core.c
>> @@ -941,6 +941,18 @@ static int dwc3_probe(struct platform_device *pdev)
>>       dwc->xhci_resources[1].flags = res->flags;
>>       dwc->xhci_resources[1].name = res->name;
>>
>> +    dwc->otg_irq = platform_get_irq_byname(pdev, "otg");
>> +    if (!dwc->otg_irq)
> 
>    The usual mistake repeated again: that function reutrns error # on failure, not 0.
> 
>> +        dwc->otg_irq = res->start;
>> +
>> +    dwc->gadget_irq = platform_get_irq_byname(pdev, "peripheral");
>> +    if (!dwc->gadget_irq)
>> +        dwc->gadget_irq = res->start;
> 
>    Likewise.
> 
>> +
>> +    dwc->xhci_irq = platform_get_irq_byname(pdev, "host");
>> +    if (!dwc->xhci_irq)
> 
>    Likewise.

Right. I'll fix it up. Thanks.

cheers,
-roger
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diff mbox

Patch

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index a7498e0..7b33d7b 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -941,6 +941,18 @@  static int dwc3_probe(struct platform_device *pdev)
 	dwc->xhci_resources[1].flags = res->flags;
 	dwc->xhci_resources[1].name = res->name;
 
+	dwc->otg_irq = platform_get_irq_byname(pdev, "otg");
+	if (!dwc->otg_irq)
+		dwc->otg_irq = res->start;
+
+	dwc->gadget_irq = platform_get_irq_byname(pdev, "peripheral");
+	if (!dwc->gadget_irq)
+		dwc->gadget_irq = res->start;
+
+	dwc->xhci_irq = platform_get_irq_byname(pdev, "host");
+	if (!dwc->xhci_irq)
+		dwc->xhci_irq = res->start;
+
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {
 		dev_err(dev, "missing memory resource\n");
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 9c1c094..c3431b2 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -742,6 +742,9 @@  struct dwc3_scratchpad_array {
  * @maximum_speed: maximum speed requested (mainly for testing purposes)
  * @revision: revision register contents
  * @dr_mode: requested mode of operation
+ * @xhci_irq: IRQ number for XHCI IRQs
+ * @gadget_irq: IRQ number for Peripheral IRQs
+ * @otg_irq: IRQ number for OTG IRQs
  * @usb2_phy: pointer to USB2 PHY
  * @usb3_phy: pointer to USB3 PHY
  * @usb2_generic_phy: pointer to USB2 PHY
@@ -846,6 +849,10 @@  struct dwc3 {
 
 	enum usb_dr_mode	dr_mode;
 
+	int			gadget_irq;
+	int			xhci_irq;
+	int			otg_irq;
+
 	/* used for suspend/resume */
 	u32			dcfg;
 	u32			gctl;
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 333a7c0..cf6b945 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1531,7 +1531,7 @@  static int dwc3_gadget_start(struct usb_gadget *g,
 	int			irq;
 	u32			reg;
 
-	irq = platform_get_irq(to_platform_device(dwc->dev), 0);
+	irq = dwc->gadget_irq;
 	ret = request_threaded_irq(irq, dwc3_interrupt, dwc3_thread_interrupt,
 			IRQF_SHARED, "dwc3", dwc);
 	if (ret) {