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Date: Mon, 4 Jan 2016 13:28:33 +0900
From: Milo Kim <milo.kim@...com>
To: <tglx@...utronix.de>
CC: <jason@...edaemon.net>, <marc.zyngier@....com>,
<alexandre.belloni@...e-electrons.com>,
<boris.brezillon@...e-electrons.com>,
<ludovic.desroches@...el.com>, <nicolas.ferre@...el.com>,
<linux-kernel@...r.kernel.org>, Milo Kim <milo.kim@...com>
Subject: [PATCH 09/19] irqchip: atmel-aic: add common retrigger function
AIC has one register access to retrigger an interrupt.
AIC5 requires two register accesses - SSR and ISCR.
This patch unifies interrupt retrigger operation.
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Jason Cooper <jason@...edaemon.net>
Cc: Marc Zyngier <marc.zyngier@....com>
Cc: Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Cc: Boris BREZILLON <boris.brezillon@...e-electrons.com>
Cc: Ludovic Desroches <ludovic.desroches@...el.com>
Cc: Nicolas Ferre <nicolas.ferre@...el.com>
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Milo Kim <milo.kim@...com>
---
drivers/irqchip/irq-atmel-aic-common.c | 21 +++++++++++++++++++++
drivers/irqchip/irq-atmel-aic.c | 13 -------------
drivers/irqchip/irq-atmel-aic5.c | 15 ---------------
3 files changed, 21 insertions(+), 28 deletions(-)
diff --git a/drivers/irqchip/irq-atmel-aic-common.c b/drivers/irqchip/irq-atmel-aic-common.c
index 533b3e9..ec93725 100644
--- a/drivers/irqchip/irq-atmel-aic-common.c
+++ b/drivers/irqchip/irq-atmel-aic-common.c
@@ -243,6 +243,26 @@ static void aic_unmask(struct irq_data *d)
irq_gc_unlock(bgc);
}
+static int aic_retrigger(struct irq_data *d)
+{
+ struct irq_domain *domain = d->domain;
+ struct irq_chip_generic *bgc = irq_get_domain_generic_chip(domain, 0);
+
+ /* Set interrupt */
+ irq_gc_lock(bgc);
+
+ if (aic_is_ssr_used()) {
+ irq_reg_writel(bgc, d->hwirq, aic_reg_data->ssr);
+ irq_reg_writel(bgc, 1, aic_reg_data->iscr);
+ } else {
+ irq_reg_writel(bgc, d->mask, aic_reg_data->iscr);
+ }
+
+ irq_gc_unlock(bgc);
+
+ return 0;
+}
+
int aic_common_set_type(struct irq_data *d, unsigned type, unsigned *val)
{
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
@@ -355,6 +375,7 @@ struct irq_domain *__init aic_common_of_init(struct device_node *node,
gc->chip_types[0].chip.irq_shutdown = aic_common_shutdown;
gc->chip_types[0].chip.irq_mask = aic_mask;
gc->chip_types[0].chip.irq_unmask = aic_unmask;
+ gc->chip_types[0].chip.irq_retrigger = aic_retrigger;
gc->private = &aic[i];
}
diff --git a/drivers/irqchip/irq-atmel-aic.c b/drivers/irqchip/irq-atmel-aic.c
index df12249d..c218716 100644
--- a/drivers/irqchip/irq-atmel-aic.c
+++ b/drivers/irqchip/irq-atmel-aic.c
@@ -74,18 +74,6 @@ aic_handle(struct pt_regs *regs)
handle_domain_irq(aic_domain, irqnr, regs);
}
-static int aic_retrigger(struct irq_data *d)
-{
- struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
-
- /* Enable interrupt on AIC5 */
- irq_gc_lock(gc);
- irq_reg_writel(gc, d->mask, AT91_AIC_ISCR);
- irq_gc_unlock(gc);
-
- return 0;
-}
-
static int aic_set_type(struct irq_data *d, unsigned type)
{
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
@@ -185,7 +173,6 @@ static int __init aic_of_init(struct device_node *node,
gc = irq_get_domain_generic_chip(domain, 0);
gc->chip_types[0].regs.eoi = AT91_AIC_EOICR;
- gc->chip_types[0].chip.irq_retrigger = aic_retrigger;
gc->chip_types[0].chip.irq_set_type = aic_set_type;
gc->chip_types[0].chip.irq_suspend = aic_suspend;
gc->chip_types[0].chip.irq_resume = aic_resume;
diff --git a/drivers/irqchip/irq-atmel-aic5.c b/drivers/irqchip/irq-atmel-aic5.c
index e610780..49d40b4 100644
--- a/drivers/irqchip/irq-atmel-aic5.c
+++ b/drivers/irqchip/irq-atmel-aic5.c
@@ -83,20 +83,6 @@ aic5_handle(struct pt_regs *regs)
handle_domain_irq(aic5_domain, irqnr, regs);
}
-static int aic5_retrigger(struct irq_data *d)
-{
- struct irq_domain *domain = d->domain;
- struct irq_chip_generic *bgc = irq_get_domain_generic_chip(domain, 0);
-
- /* Enable interrupt on AIC5 */
- irq_gc_lock(bgc);
- irq_reg_writel(bgc, d->hwirq, AT91_AIC5_SSR);
- irq_reg_writel(bgc, 1, AT91_AIC5_ISCR);
- irq_gc_unlock(bgc);
-
- return 0;
-}
-
static int aic5_set_type(struct irq_data *d, unsigned type)
{
struct irq_domain *domain = d->domain;
@@ -239,7 +225,6 @@ static int __init aic5_of_init(struct device_node *node,
gc = irq_get_domain_generic_chip(domain, i * AIC_IRQS_PER_CHIP);
gc->chip_types[0].regs.eoi = AT91_AIC5_EOICR;
- gc->chip_types[0].chip.irq_retrigger = aic5_retrigger;
gc->chip_types[0].chip.irq_set_type = aic5_set_type;
gc->chip_types[0].chip.irq_suspend = aic5_suspend;
gc->chip_types[0].chip.irq_resume = aic5_resume;
--
2.6.4
--
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