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84 lines
2.0 KiB
84 lines
2.0 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright 2008 Openmoko, Inc. |
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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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* S3C64XX - PM core support for arch/arm/plat-s3c/pm.c |
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*/ |
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#ifndef __MACH_S3C64XX_PM_CORE_H |
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#define __MACH_S3C64XX_PM_CORE_H __FILE__ |
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#include <linux/serial_s3c.h> |
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#include <linux/delay.h> |
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#include "regs-gpio.h" |
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#include "regs-clock.h" |
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#include "map.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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u32 tmp = __raw_readl(S3C_PCLK_GATE); |
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/* As a note, since the S3C64XX UARTs generally have multiple |
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* clock sources, we simply enable PCLK at the moment and hope |
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* that the resume settings for the UART are suitable for the |
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* use with PCLK. |
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*/ |
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tmp |= S3C_CLKCON_PCLK_UART0; |
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tmp |= S3C_CLKCON_PCLK_UART1; |
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tmp |= S3C_CLKCON_PCLK_UART2; |
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tmp |= S3C_CLKCON_PCLK_UART3; |
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__raw_writel(tmp, S3C_PCLK_GATE); |
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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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/* VIC should have already been taken care of */ |
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/* clear any pending EINT0 interrupts */ |
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__raw_writel(__raw_readl(S3C64XX_EINT0PEND), S3C64XX_EINT0PEND); |
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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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} |
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static inline void s3c_pm_arch_show_resume_irqs(void) |
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{ |
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} |
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/* make these defines, we currently do not have any need to change |
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* the IRQ wake controls depending on the CPU we are running on */ |
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#ifdef CONFIG_PM_SLEEP |
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#define s3c_irqwake_eintallow ((1 << 28) - 1) |
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#define s3c_irqwake_intallow (~0) |
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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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static inline void s3c_pm_restored_gpios(void) |
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{ |
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/* ensure sleep mode has been cleared from the system */ |
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__raw_writel(0, S3C64XX_SLPEN); |
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} |
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static inline void samsung_pm_saved_gpios(void) |
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{ |
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/* turn on the sleep mode and keep it there, as it seems that during |
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* suspend the xCON registers get re-set and thus you can end up with |
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* problems between going to sleep and resuming. |
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*/ |
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__raw_writel(S3C64XX_SLPEN_USE_xSLP, S3C64XX_SLPEN); |
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} |
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#endif /* __MACH_S3C64XX_PM_CORE_H */
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