Commit fc98adb9 authored by Huacai Chen's avatar Huacai Chen Committed by Marc Zyngier
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irqchip/loongson-liointc: Save/restore int_edge/int_pol registers during S3/S4 



If int_edge/int_pol registers are configured to not be the default values, we
should save/restore them during S3/S4.

Signed-off-by: default avatarYingkun Meng <mengyingkun@loongson.cn>
Signed-off-by: default avatarHuacai Chen <chenhuacai@loongson.cn>
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221207140643.1600743-1-chenhuacai@loongson.cn
parent e7406042

drivers/irqchip/irq-loongson-liointc.c

+13 −0
Original line number Diff line number Diff line
@@ -55,6 +55,8 @@ struct liointc_priv { 
	struct liointc_handler_data	handler[LIOINTC_NUM_PARENT];

	void __iomem			*core_isr[LIOINTC_NUM_CORES];

	u8				map_cache[LIOINTC_CHIP_IRQ];

	u32				int_pol;

	u32				int_edge;

	bool				has_lpc_irq_errata;

};
@@ -138,6 +140,14 @@ static int liointc_set_type(struct irq_data *data, unsigned int type) 
	return 0;

}



static void liointc_suspend(struct irq_chip_generic *gc)

{

	struct liointc_priv *priv = gc->private;



	priv->int_pol = readl(gc->reg_base + LIOINTC_REG_INTC_POL);

	priv->int_edge = readl(gc->reg_base + LIOINTC_REG_INTC_EDGE);

}



static void liointc_resume(struct irq_chip_generic *gc)

{

	struct liointc_priv *priv = gc->private;
@@ -150,6 +160,8 @@ static void liointc_resume(struct irq_chip_generic *gc) 
	/* Restore map cache */

	for (i = 0; i < LIOINTC_CHIP_IRQ; i++)

		writeb(priv->map_cache[i], gc->reg_base + i);

	writel(priv->int_pol, gc->reg_base + LIOINTC_REG_INTC_POL);

	writel(priv->int_edge, gc->reg_base + LIOINTC_REG_INTC_EDGE);

	/* Restore mask cache */

	writel(gc->mask_cache, gc->reg_base + LIOINTC_REG_INTC_ENABLE);

	irq_gc_unlock_irqrestore(gc, flags);
@@ -269,6 +281,7 @@ static int liointc_init(phys_addr_t addr, unsigned long size, int revision, 
	gc->private = priv;

	gc->reg_base = base;

	gc->domain = domain;

	gc->suspend = liointc_suspend;

	gc->resume = liointc_resume;



	ct = gc->chip_types;