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96 lines
2.3 KiB
96 lines
2.3 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright 2008 Simtec Electronics |
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* Ben Dooks <[email protected]> |
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* http://armlinux.simtec.co.uk/ |
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* |
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* S3C24xx - PM core support for arch/arm/plat-s3c/pm.c |
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*/ |
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#include <linux/delay.h> |
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#include <linux/io.h> |
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#include "regs-clock.h" |
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#include "regs-irq-s3c24xx.h" |
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#include <mach/irqs.h> |
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static inline void s3c_pm_debug_init_uart(void) |
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{ |
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#ifdef CONFIG_SAMSUNG_PM_DEBUG |
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unsigned long tmp = __raw_readl(S3C2410_CLKCON); |
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/* re-start uart clocks */ |
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tmp |= S3C2410_CLKCON_UART0; |
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tmp |= S3C2410_CLKCON_UART1; |
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tmp |= S3C2410_CLKCON_UART2; |
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__raw_writel(tmp, S3C2410_CLKCON); |
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udelay(10); |
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#endif |
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} |
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static inline void s3c_pm_arch_prepare_irqs(void) |
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{ |
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__raw_writel(s3c_irqwake_intmask, S3C2410_INTMSK); |
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__raw_writel(s3c_irqwake_eintmask, S3C2410_EINTMASK); |
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/* ack any outstanding external interrupts before we go to sleep */ |
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__raw_writel(__raw_readl(S3C2410_EINTPEND), S3C2410_EINTPEND); |
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__raw_writel(__raw_readl(S3C2410_INTPND), S3C2410_INTPND); |
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__raw_writel(__raw_readl(S3C2410_SRCPND), S3C2410_SRCPND); |
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} |
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static inline void s3c_pm_arch_stop_clocks(void) |
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{ |
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__raw_writel(0x00, S3C2410_CLKCON); /* turn off clocks over sleep */ |
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} |
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/* s3c2410_pm_show_resume_irqs |
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* |
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* print any IRQs asserted at resume time (ie, we woke from) |
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*/ |
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static inline void s3c_pm_show_resume_irqs(int start, unsigned long which, |
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unsigned long mask) |
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{ |
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int i; |
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which &= ~mask; |
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for (i = 0; i <= 31; i++) { |
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if (which & (1L<<i)) { |
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S3C_PMDBG("IRQ %d asserted at resume\n", start+i); |
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} |
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} |
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} |
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static inline void s3c_pm_arch_show_resume_irqs(void) |
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{ |
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S3C_PMDBG("post sleep: IRQs 0x%08x, 0x%08x\n", |
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__raw_readl(S3C2410_SRCPND), |
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__raw_readl(S3C2410_EINTPEND)); |
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s3c_pm_show_resume_irqs(IRQ_EINT0, __raw_readl(S3C2410_SRCPND), |
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s3c_irqwake_intmask); |
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s3c_pm_show_resume_irqs(IRQ_EINT4-4, __raw_readl(S3C2410_EINTPEND), |
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s3c_irqwake_eintmask); |
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} |
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static inline void s3c_pm_restored_gpios(void) { } |
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static inline void samsung_pm_saved_gpios(void) { } |
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/* state for IRQs over sleep */ |
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/* default is to allow for EINT0..EINT15, and IRQ_RTC as wakeup sources |
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* |
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* set bit to 1 in allow bitfield to enable the wakeup settings on it |
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*/ |
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#ifdef CONFIG_PM_SLEEP |
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#define s3c_irqwake_intallow (1L << 30 | 0xfL) |
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#define s3c_irqwake_eintallow (0x0000fff0L) |
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#else |
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#define s3c_irqwake_eintallow 0 |
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#define s3c_irqwake_intallow 0 |
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#endif
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