linux-kernel - Re: [PATCH] drivers: irqchip: pdc: setup all edge interrupts as rising edge at GIC

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Date:   Fri, 28 Sep 2018 08:57:10 -0600
From:   Lina Iyer <ilina@...eaurora.org>
To:     Marc Zyngier <marc.zyngier@....com>
Cc:     evgreen@...omium.org, bjorn.andersson@...aro.org,
        rplsssn@...eaurora.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, rnayak@...eaurora.org,
        andy.gross@...aro.org, sboyd@...nel.org, dianders@...omium.org
Subject: Re: [PATCH] drivers: irqchip: pdc: setup all edge interrupts as
 rising edge at GIC

On Fri, Sep 28 2018 at 04:40 -0600, Marc Zyngier wrote:
>On 27/09/18 18:18, Lina Iyer wrote:
>>The PDC irqchp can convert a falling edge or level low interrupt to a
>>rising edge or level high interrupt at the GIC. We just need to setup
>>the GIC correctly. Set up the interrupt type for the IRQ_TYPE_EDGE_BOTH
>>as IRQ_TYPE_EDGE_RISING at the GIC.
>>
>>Reported-by: Evan Green <evgreen@...omium.org>
>>Signed-off-by: Lina Iyer <ilina@...eaurora.org>
>>---
>>  drivers/irqchip/qcom-pdc.c | 1 +
>>  1 file changed, 1 insertion(+)
>>
>>diff --git a/drivers/irqchip/qcom-pdc.c b/drivers/irqchip/qcom-pdc.c
>>index b1b47a40a278..faa7d61b9d6c 100644
>>--- a/drivers/irqchip/qcom-pdc.c
>>+++ b/drivers/irqchip/qcom-pdc.c
>>@@ -124,6 +124,7 @@ static int qcom_pdc_gic_set_type(struct irq_data *d, unsigned int type)
>>  		break;
>>  	case IRQ_TYPE_EDGE_BOTH:
>>  		pdc_type = PDC_EDGE_DUAL;
>>+		type = IRQ_TYPE_EDGE_RISING;
>>  		break;
>>  	case IRQ_TYPE_LEVEL_HIGH:
>>  		pdc_type = PDC_LEVEL_HIGH;
>>
>
>Queued for 4.20, with
>
>Fixes: f55c73aef890 ("irqchip/pdc: Add PDC interrupt controller for
>QCOM SoCs")
>
>added. Please consider providing these tags in the future.

Thanks Marc. Will do.

-- Lina