| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | /* |
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| 3 | * Copyright 2008 Openmoko, Inc. |
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| 4 | * Copyright 2008 Simtec Electronics |
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| 5 | * Ben Dooks <ben@simtec.co.uk> |
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| 6 | * http://armlinux.simtec.co.uk/ |
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| 7 | * |
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| 8 | * S3C64XX - PM core support for arch/arm/plat-s3c/pm.c |
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| 9 | */ |
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| 10 | |
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| 11 | #ifndef __MACH_S3C64XX_PM_CORE_H |
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| 12 | #define __MACH_S3C64XX_PM_CORE_H __FILE__ |
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| 13 | |
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| 14 | #include <linux/serial_s3c.h> |
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| 15 | #include <linux/delay.h> |
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| 16 | |
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| 17 | #include "regs-gpio.h" |
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| 18 | #include "regs-clock.h" |
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| 19 | #include "map.h" |
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| 20 | |
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| 21 | static inline void s3c_pm_debug_init_uart(void) |
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| 22 | { |
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| 23 | } |
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| 24 | |
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| 25 | static inline void s3c_pm_arch_prepare_irqs(void) |
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| 26 | { |
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| 27 | /* VIC should have already been taken care of */ |
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| 28 | |
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| 29 | /* clear any pending EINT0 interrupts */ |
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| 30 | __raw_writel(__raw_readl(S3C64XX_EINT0PEND), S3C64XX_EINT0PEND); |
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| 31 | } |
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| 32 | |
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| 33 | static inline void s3c_pm_arch_stop_clocks(void) |
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| 34 | { |
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| 35 | } |
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| 36 | |
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| 37 | static inline void s3c_pm_arch_show_resume_irqs(void) |
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| 38 | { |
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| 39 | } |
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| 40 | |
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| 41 | /* make these defines, we currently do not have any need to change |
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| 42 | * the IRQ wake controls depending on the CPU we are running on */ |
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| 43 | #ifdef CONFIG_PM_SLEEP |
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| 44 | #define s3c_irqwake_eintallow ((1 << 28) - 1) |
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| 45 | #define s3c_irqwake_intallow (~0) |
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| 46 | #else |
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| 47 | #define s3c_irqwake_eintallow 0 |
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| 48 | #define s3c_irqwake_intallow 0 |
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| 49 | #endif |
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| 50 | |
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| 51 | static inline void s3c_pm_restored_gpios(void) |
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| 52 | { |
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| 53 | /* ensure sleep mode has been cleared from the system */ |
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| 54 | |
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| 55 | __raw_writel(val: 0, S3C64XX_SLPEN); |
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| 56 | } |
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| 57 | |
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| 58 | static inline void samsung_pm_saved_gpios(void) |
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| 59 | { |
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| 60 | /* turn on the sleep mode and keep it there, as it seems that during |
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| 61 | * suspend the xCON registers get re-set and thus you can end up with |
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| 62 | * problems between going to sleep and resuming. |
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| 63 | */ |
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| 64 | |
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| 65 | __raw_writel(S3C64XX_SLPEN_USE_xSLP, S3C64XX_SLPEN); |
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| 66 | } |
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| 67 | #endif /* __MACH_S3C64XX_PM_CORE_H */ |
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| 68 | |
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