Hi,
On Tue, Oct 28, 2014 at 06:25:45PM -0500, dinguyen@xxxxxxxxxxxxxxxxxxxxx wrote:
> From: Dinh Nguyen <dinguyen@xxxxxxxxxxxxxxxxxxxxx>
>
> Make dwc2_handle_common_intr call the gadget interrupt function when operating
> in peripheral mode. Remove the spinlock functions in s3c_hsotg_irq as
> dwc2_handle_common_intr() already has the spinlocks.
>
> Move the registeration of the IRQ to common code for platform and PCI.
>
> Remove duplicate interrupt conditions that was in gadget, as those are handled
> by dwc2 common interrupt handler.
>
> Signed-off-by: Dinh Nguyen <dinguyen@xxxxxxxxxxxxxxxxxxxxx>
> Acked-by: Paul Zimmerman <paulz@xxxxxxxxxxxx>
> ---
> v5: remove individual devm_request_irq from gadget and hcd, and place a
> single devm_request_irq in platform and pci.
> v2: Keep interrupt handler for host and peripheral modes separate
> ---
> drivers/usb/dwc2/core.c | 10 --------
> drivers/usb/dwc2/core.h | 3 +++
> drivers/usb/dwc2/core_intr.c | 3 +++
> drivers/usb/dwc2/gadget.c | 57 ++------------------------------------------
> drivers/usb/dwc2/pci.c | 6 +++++
> drivers/usb/dwc2/platform.c | 9 +++++++
> 6 files changed, 23 insertions(+), 65 deletions(-)
>
> diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c
> index d926945..7605850b 100644
> --- a/drivers/usb/dwc2/core.c
> +++ b/drivers/usb/dwc2/core.c
> @@ -458,16 +458,6 @@ int dwc2_core_init(struct dwc2_hsotg *hsotg, bool select_phy, int irq)
> /* Clear the SRP success bit for FS-I2c */
> hsotg->srp_success = 0;
>
> - if (irq >= 0) {
> - dev_dbg(hsotg->dev, "registering common handler for irq%d\n",
> - irq);
> - retval = devm_request_irq(hsotg->dev, irq,
> - dwc2_handle_common_intr, IRQF_SHARED,
> - dev_name(hsotg->dev), hsotg);
> - if (retval)
> - return retval;
> - }
> -
> /* Enable common interrupts */
> dwc2_enable_common_interrupts(hsotg);
>
> diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h
> index 80d29c7..ec70862 100644
> --- a/drivers/usb/dwc2/core.h
> +++ b/drivers/usb/dwc2/core.h
> @@ -967,6 +967,7 @@ extern int s3c_hsotg_suspend(struct dwc2_hsotg *dwc2);
> extern int s3c_hsotg_resume(struct dwc2_hsotg *dwc2);
> extern int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq);
> extern void s3c_hsotg_core_init(struct dwc2_hsotg *dwc2);
> +irqreturn_t s3c_hsotg_irq(int irq, void *pw);
> #else
> static inline int s3c_hsotg_remove(struct dwc2_hsotg *dwc2)
> { return 0; }
> @@ -977,6 +978,8 @@ static inline int s3c_hsotg_resume(struct dwc2_hsotg *dwc2)
> static inline int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq)
> { return 0; }
> static inline void s3c_hsotg_core_init(struct dwc2_hsotg *dwc2) {}
> +static inline irqreturn_t s3c_hsotg_irq(int irq, void *pw)
> +{ return IRQ_HANDLED; }
> #endif
>
> #if IS_ENABLED(CONFIG_USB_DWC2_HOST) || IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE)
> diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
> index b176c2f..b0c14e0 100644
> --- a/drivers/usb/dwc2/core_intr.c
> +++ b/drivers/usb/dwc2/core_intr.c
> @@ -474,6 +474,9 @@ irqreturn_t dwc2_handle_common_intr(int irq, void *dev)
>
> spin_lock(&hsotg->lock);
>
> + if (dwc2_is_device_mode(hsotg))
> + retval = s3c_hsotg_irq(irq, dev);
> +
> gintsts = dwc2_read_common_intr(hsotg);
> if (gintsts & ~GINTSTS_PRTINT)
> retval = IRQ_HANDLED;
> diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
> index 19d1b03..202f8cc 100644
> --- a/drivers/usb/dwc2/gadget.c
> +++ b/drivers/usb/dwc2/gadget.c
> @@ -2257,14 +2257,13 @@ void s3c_hsotg_core_init(struct dwc2_hsotg *hsotg)
> * @irq: The IRQ number triggered
> * @pw: The pw value when registered the handler.
> */
> -static irqreturn_t s3c_hsotg_irq(int irq, void *pw)
> +irqreturn_t s3c_hsotg_irq(int irq, void *pw)
why ? It would've been a lot easier to just make the IRQ line shared.
--
balbi
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