| 1 | // SPDX-License-Identifier: GPL-2.0 |
|---|---|
| 2 | // |
| 3 | // Copyright 2010 Ben Dooks <ben-linux@fluff.org> |
| 4 | // |
| 5 | // Support for wakeup mask interrupts on newer SoCs |
| 6 | |
| 7 | #include <linux/kernel.h> |
| 8 | #include <linux/spinlock.h> |
| 9 | #include <linux/device.h> |
| 10 | #include <linux/types.h> |
| 11 | #include <linux/irq.h> |
| 12 | #include <linux/io.h> |
| 13 | |
| 14 | #include "wakeup-mask.h" |
| 15 | #include "pm.h" |
| 16 | |
| 17 | void samsung_sync_wakemask(void __iomem *reg, |
| 18 | const struct samsung_wakeup_mask *mask, int nr_mask) |
| 19 | { |
| 20 | struct irq_data *data; |
| 21 | u32 val; |
| 22 | |
| 23 | val = __raw_readl(addr: reg); |
| 24 | |
| 25 | for (; nr_mask > 0; nr_mask--, mask++) { |
| 26 | if (mask->irq == NO_WAKEUP_IRQ) { |
| 27 | val |= mask->bit; |
| 28 | continue; |
| 29 | } |
| 30 | |
| 31 | data = irq_get_irq_data(irq: mask->irq); |
| 32 | |
| 33 | /* bit of a liberty to read this directly from irq_data. */ |
| 34 | if (irqd_is_wakeup_set(d: data)) |
| 35 | val &= ~mask->bit; |
| 36 | else |
| 37 | val |= mask->bit; |
| 38 | } |
| 39 | |
| 40 | printk(KERN_INFO "wakemask %08x => %08x\n", __raw_readl(reg), val); |
| 41 | __raw_writel(val, addr: reg); |
| 42 | } |
| 43 |