linux-kernel - [v3 01/11] irqchip: ls-extirq: Add LS1043A, LS1088A external interrupt

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Date:   Mon, 30 Nov 2020 11:30:45 +0800
From:   Biwen Li <biwen.li@....nxp.com>
To:     linux@...musvillemoes.dk, shawnguo@...nel.org, robh+dt@...nel.org,
        mark.rutland@....com, leoyang.li@....com, zhiqiang.hou@....com,
        tglx@...utronix.de, jason@...edaemon.net, maz@...nel.org
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        jiafei.pan@....com, xiaobo.xie@....com,
        linux-arm-kernel@...ts.infradead.org,
        Hou Zhiqiang <Zhiqiang.Hou@....com>,
        Biwen Li <biwen.li@....com>
Subject: [v3 01/11] irqchip: ls-extirq: Add LS1043A, LS1088A external interrupt

From: Hou Zhiqiang <Zhiqiang.Hou@....com>

Add an new IRQ chip declaration for LS1043A and LS1088A
- compatible "fsl,ls1043a-extirq" for LS1043A, LS1046A.
- compatible "fsl,ls1088a-extirq" for LS1088A, LS208xA, LX216xA

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@....com>
Signed-off-by: Biwen Li <biwen.li@....com>
---
Change in v3:
	- cleanup code
	- remove robust copyright

Change in v2:
	- add despcription of bit reverse
	- update copyright

 drivers/irqchip/irq-ls-extirq.c | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/drivers/irqchip/irq-ls-extirq.c b/drivers/irqchip/irq-ls-extirq.c
index 4d1179fed77c..47804ce78b21 100644
--- a/drivers/irqchip/irq-ls-extirq.c
+++ b/drivers/irqchip/irq-ls-extirq.c
@@ -18,7 +18,7 @@
 struct ls_extirq_data {
 	struct regmap		*syscon;
 	u32			intpcr;
-	bool			bit_reverse;
+	bool			is_ls1021a_or_ls1043a;
 	u32			nirq;
 	struct irq_fwspec	map[MAXIRQ];
 };
@@ -30,7 +30,7 @@ ls_extirq_set_type(struct irq_data *data, unsigned int type)
 	irq_hw_number_t hwirq = data->hwirq;
 	u32 value, mask;
 
-	if (priv->bit_reverse)
+	if (priv->is_ls1021a_or_ls1043a)
 		mask = 1U << (31 - hwirq);
 	else
 		mask = 1U << hwirq;
@@ -174,14 +174,9 @@ ls_extirq_of_init(struct device_node *node, struct device_node *parent)
 	if (ret)
 		goto out;
 
-	if (of_device_is_compatible(node, "fsl,ls1021a-extirq")) {
-		u32 revcr;
-
-		ret = regmap_read(priv->syscon, LS1021A_SCFGREVCR, &revcr);
-		if (ret)
-			goto out;
-		priv->bit_reverse = (revcr != 0);
-	}
+	if (of_device_is_compatible(node, "fsl,ls1021a-extirq") || \
+	    of_device_is_compatible(node, "fsl,ls1043a-extirq"))
+		priv->is_ls1021a_or_ls1043a = true;
 
 	domain = irq_domain_add_hierarchy(parent_domain, 0, priv->nirq, node,
 					  &extirq_domain_ops, priv);
@@ -195,3 +190,5 @@ ls_extirq_of_init(struct device_node *node, struct device_node *parent)
 }
 
 IRQCHIP_DECLARE(ls1021a_extirq, "fsl,ls1021a-extirq", ls_extirq_of_init);
+IRQCHIP_DECLARE(ls1043a_extirq, "fsl,ls1043a-extirq", ls_extirq_of_init);
+IRQCHIP_DECLARE(ls1088a_extirq, "fsl,ls1088a-extirq", ls_extirq_of_init);
-- 
2.17.1