breeze/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-01-25 15:03:52 +08:00
Code Issues Packages Projects Releases Wiki Activity

irqchip/loongson-liointc: Save/restore int_edge/int_pol registers during S3/S4

Browse Source 
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: Yingkun Meng <mengyingkun@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221207140643.1600743-1-chenhuacai@loongson.cn
This commit is contained in:
Huacai Chen
2022-12-07 22:06:43 +08:00
committed by Marc Zyngier
parent e740604232
commit fc98adb9a8
1 changed files with 13 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/irqchip/irq-loongson-liointc.c
View File

@@ -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;