linux-kernel - [PATCH v2 10/23] soc: fsl: qe: use qe_ic_cascade_{low,high}

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Message-Id: <20191025124058.22580-11-linux@rasmusvillemoes.dk>
Date:   Fri, 25 Oct 2019 14:40:45 +0200
From:   Rasmus Villemoes <linux@...musvillemoes.dk>
To:     Qiang Zhao <qiang.zhao@....com>, Li Yang <leoyang.li@....com>,
        Christophe Leroy <christophe.leroy@....fr>
Cc:     linuxppc-dev@...ts.ozlabs.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Scott Wood <oss@...error.net>,
        Valentin Longchamp <valentin.longchamp@...mile.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>
Subject: [PATCH v2 10/23] soc: fsl: qe: use qe_ic_cascade_{low,high}_mpic also on 83xx

The *_ipic and *_mpic handlers are almost identical - the only
difference is that the latter end with an unconditional
chip->irq_eoi() call. Since IPIC does not have ->irq_eoi, we can
reduce some code duplication by calling irq_eoi conditionally.

This is similar to what is already done in mpc8xxx_gpio_irq_cascade().

This leaves the functions slightly misnamed, but that will be fixed in
a subsequent patch.

Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk>
---
 arch/powerpc/platforms/83xx/misc.c |  2 +-
 drivers/soc/fsl/qe/qe_ic.c         | 24 ++++--------------------
 include/soc/fsl/qe/qe_ic.h         |  2 --
 3 files changed, 5 insertions(+), 23 deletions(-)

diff --git a/arch/powerpc/platforms/83xx/misc.c b/arch/powerpc/platforms/83xx/misc.c
index f46d7bf3b140..779791c0570f 100644
--- a/arch/powerpc/platforms/83xx/misc.c
+++ b/arch/powerpc/platforms/83xx/misc.c
@@ -100,7 +100,7 @@ void __init mpc83xx_qe_init_IRQ(void)
 		if (!np)
 			return;
 	}
-	qe_ic_init(np, 0, qe_ic_cascade_low_ipic, qe_ic_cascade_high_ipic);
+	qe_ic_init(np, 0, qe_ic_cascade_low_mpic, qe_ic_cascade_high_mpic);
 	of_node_put(np);
 }
 
diff --git a/drivers/soc/fsl/qe/qe_ic.c b/drivers/soc/fsl/qe/qe_ic.c
index a847b2672e90..0ff802816c0c 100644
--- a/drivers/soc/fsl/qe/qe_ic.c
+++ b/drivers/soc/fsl/qe/qe_ic.c
@@ -402,24 +402,6 @@ unsigned int qe_ic_get_high_irq(struct qe_ic *qe_ic)
 	return irq_linear_revmap(qe_ic->irqhost, irq);
 }
 
-void qe_ic_cascade_low_ipic(struct irq_desc *desc)
-{
-	struct qe_ic *qe_ic = irq_desc_get_handler_data(desc);
-	unsigned int cascade_irq = qe_ic_get_low_irq(qe_ic);
-
-	if (cascade_irq != NO_IRQ)
-		generic_handle_irq(cascade_irq);
-}
-
-void qe_ic_cascade_high_ipic(struct irq_desc *desc)
-{
-	struct qe_ic *qe_ic = irq_desc_get_handler_data(desc);
-	unsigned int cascade_irq = qe_ic_get_high_irq(qe_ic);
-
-	if (cascade_irq != NO_IRQ)
-		generic_handle_irq(cascade_irq);
-}
-
 void qe_ic_cascade_low_mpic(struct irq_desc *desc)
 {
 	struct qe_ic *qe_ic = irq_desc_get_handler_data(desc);
@@ -429,7 +411,8 @@ void qe_ic_cascade_low_mpic(struct irq_desc *desc)
 	if (cascade_irq != NO_IRQ)
 		generic_handle_irq(cascade_irq);
 
-	chip->irq_eoi(&desc->irq_data);
+	if (chip->irq_eoi)
+		chip->irq_eoi(&desc->irq_data);
 }
 
 void qe_ic_cascade_high_mpic(struct irq_desc *desc)
@@ -441,7 +424,8 @@ void qe_ic_cascade_high_mpic(struct irq_desc *desc)
 	if (cascade_irq != NO_IRQ)
 		generic_handle_irq(cascade_irq);
 
-	chip->irq_eoi(&desc->irq_data);
+	if (chip->irq_eoi)
+		chip->irq_eoi(&desc->irq_data);
 }
 
 void qe_ic_cascade_muxed_mpic(struct irq_desc *desc)
diff --git a/include/soc/fsl/qe/qe_ic.h b/include/soc/fsl/qe/qe_ic.h
index f3492eb13052..fb10a7606acc 100644
--- a/include/soc/fsl/qe/qe_ic.h
+++ b/include/soc/fsl/qe/qe_ic.h
@@ -74,8 +74,6 @@ void qe_ic_set_highest_priority(unsigned int virq, int high);
 int qe_ic_set_priority(unsigned int virq, unsigned int priority);
 int qe_ic_set_high_priority(unsigned int virq, unsigned int priority, int high);
 
-void qe_ic_cascade_low_ipic(struct irq_desc *desc);
-void qe_ic_cascade_high_ipic(struct irq_desc *desc);
 void qe_ic_cascade_low_mpic(struct irq_desc *desc);
 void qe_ic_cascade_high_mpic(struct irq_desc *desc);
 void qe_ic_cascade_muxed_mpic(struct irq_desc *desc);
-- 
2.23.0