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From:   Rasmus Villemoes <linux@rasmusvillemoes.dk>
To:     Qiang Zhao <qiang.zhao@nxp.com>, Li Yang <leoyang.li@nxp.com>,
        Christophe Leroy <christophe.leroy@c-s.fr>
Cc:     linuxppc-dev@lists.ozlabs.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        Scott Wood <oss@buserror.net>, Timur Tabi <timur@kernel.org>,
        Rasmus Villemoes <linux@rasmusvillemoes.dk>
Subject: [PATCH v6 20/49] soc: fsl: qe: simplify qe_ic_init()
Date:   Thu, 28 Nov 2019 15:55:25 +0100
Message-Id: <20191128145554.1297-21-linux@rasmusvillemoes.dk>
In-Reply-To: <20191128145554.1297-1-linux@rasmusvillemoes.dk>
References: <20191128145554.1297-1-linux@rasmusvillemoes.dk>
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Sender: linux-kernel-owner@vger.kernel.org
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qe_ic_init() takes a flags parameter, but all callers (including the
sole remaining one) have always passed 0. So remove that parameter and
simplify the body accordingly. We still explicitly initialize the
Interrupt Configuration Register (CICR) to its reset value of
all-zeroes, just in case the bootloader has played funny games.

Reviewed-by: Timur Tabi <timur@kernel.org>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
---
 drivers/soc/fsl/qe/qe_ic.c | 27 ++++-----------------------
 1 file changed, 4 insertions(+), 23 deletions(-)

diff --git a/drivers/soc/fsl/qe/qe_ic.c b/drivers/soc/fsl/qe/qe_ic.c
index 23b457e884d8..4832884da5bb 100644
--- a/drivers/soc/fsl/qe/qe_ic.c
+++ b/drivers/soc/fsl/qe/qe_ic.c
@@ -356,13 +356,13 @@ static void qe_ic_cascade_muxed_mpic(struct irq_desc *desc)
 	chip->irq_eoi(&desc->irq_data);
 }
 
-static void __init qe_ic_init(struct device_node *node, unsigned int flags)
+static void __init qe_ic_init(struct device_node *node)
 {
 	void (*low_handler)(struct irq_desc *desc);
 	void (*high_handler)(struct irq_desc *desc);
 	struct qe_ic *qe_ic;
 	struct resource res;
-	u32 temp = 0, ret;
+	u32 ret;
 
 	ret = of_address_to_resource(node, 0, &res);
 	if (ret)
@@ -399,26 +399,7 @@ static void __init qe_ic_init(struct device_node *node, unsigned int flags)
 		high_handler = NULL;
 	}
 
-	/* default priority scheme is grouped. If spread mode is    */
-	/* required, configure cicr accordingly.                    */
-	if (flags & QE_IC_SPREADMODE_GRP_W)
-		temp |= CICR_GWCC;
-	if (flags & QE_IC_SPREADMODE_GRP_X)
-		temp |= CICR_GXCC;
-	if (flags & QE_IC_SPREADMODE_GRP_Y)
-		temp |= CICR_GYCC;
-	if (flags & QE_IC_SPREADMODE_GRP_Z)
-		temp |= CICR_GZCC;
-	if (flags & QE_IC_SPREADMODE_GRP_RISCA)
-		temp |= CICR_GRTA;
-	if (flags & QE_IC_SPREADMODE_GRP_RISCB)
-		temp |= CICR_GRTB;
-
-	/* choose destination signal for highest priority interrupt */
-	if (flags & QE_IC_HIGH_SIGNAL)
-		temp |= (SIGNAL_HIGH << CICR_HPIT_SHIFT);
-
-	qe_ic_write(qe_ic->regs, QEIC_CICR, temp);
+	qe_ic_write(qe_ic->regs, QEIC_CICR, 0);
 
 	irq_set_handler_data(qe_ic->virq_low, qe_ic);
 	irq_set_chained_handler(qe_ic->virq_low, low_handler);
@@ -439,7 +420,7 @@ static int __init qe_ic_of_init(void)
 		if (!np)
 			return -ENODEV;
 	}
-	qe_ic_init(np, 0);
+	qe_ic_init(np);
 	of_node_put(np);
 	return 0;
 }
-- 
2.23.0