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author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-05 18:18:05 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-05 18:18:05 -0700 |
commit | 7abec10c623d9e0416dab6919a0ea22e6283516b (patch) | |
tree | 83aa79c369e99c4fc60eea91ebd399b7689b312e /arch/arm/mach-s5p64x0/irq-pm.c | |
parent | 0de9adf284ec20454ecf37ffd98e7e98ba7292d6 (diff) | |
parent | cfaf8fc5b59527281e9ddc2e0e04e1127936e17f (diff) |
Merge branch 'next/cleanup3' of git://git.linaro.org/people/arnd/arm-soc
* 'next/cleanup3' of git://git.linaro.org/people/arnd/arm-soc: (79 commits)
ARM: SAMSUNG: Move fimc plat. device from board files to plat-samsung
ARM: SAMSUNG: Cleanup resources by using macro
ARM: SAMSUNG: Cleanup plat-samsung/devs.c and devs.h
ARM: S5P: To merge devs.c files to one devs.c
ARM: S3C64XX: To merge devs.c files to one devs.c
ARM: S3C24XX: To merge s3c24xx devs.c files to one devs.c
ARM: S5P64X0: Add Power Management support
ARM: S5P: Make the sleep code common for S5P series SoCs
ARM: S5P: Make the common S5P PM code conditionally compile
ARM: SAMSUNG: Move S5P header files to plat-samsung
ARM: SAMSUNG: Move S3C24XX header files to plat-samsung
ARM: SAMSUNG: Moving each SoC support header files
ARM: SAMSUNG: Consolidate plat/pll.h
ARM: SAMSUNG: Consolidate plat/pwm-clock.h
ARM: SAMSUNG: Cleanup mach/clkdev.h
ARM: SAMSUNG: remove sdhci default configuration setup platform helper
ARM: EXYNOS4: Add FIMC device on SMDKV310 board
ARM: EXYNOS4: Add header file protection macros
ARM: EXYNOS4: Add usb ehci device to the SMDKV310
ARM: S3C2443: Add hsspi-clock from pclk and rename S3C2443 hsspi sclk
...
Fix up conflicts in
- arch/arm/mach-exynos4/{Kconfig,clock.c}
ARM_CPU_SUSPEND, various random device tables (gah!)
- drivers/gpio/Makefile
sa1100 gpio added, samsung gpio drivers merged
Diffstat (limited to 'arch/arm/mach-s5p64x0/irq-pm.c')
-rw-r--r-- | arch/arm/mach-s5p64x0/irq-pm.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/arch/arm/mach-s5p64x0/irq-pm.c b/arch/arm/mach-s5p64x0/irq-pm.c new file mode 100644 index 00000000000..3e6f2456ee9 --- /dev/null +++ b/arch/arm/mach-s5p64x0/irq-pm.c @@ -0,0 +1,92 @@ +/* linux/arch/arm/mach-s5p64x0/irq-pm.c + * + * Copyright (c) 2011 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * S5P64X0 - Interrupt handling Power Management + * + * Based on arch/arm/mach-s3c64xx/irq-pm.c by Ben Dooks + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/syscore_ops.h> +#include <linux/serial_core.h> +#include <linux/io.h> + +#include <plat/regs-serial.h> +#include <plat/pm.h> + +#include <mach/regs-gpio.h> + +static struct sleep_save irq_save[] = { + SAVE_ITEM(S5P64X0_EINT0CON0), + SAVE_ITEM(S5P64X0_EINT0FLTCON0), + SAVE_ITEM(S5P64X0_EINT0FLTCON1), + SAVE_ITEM(S5P64X0_EINT0MASK), +}; + +static struct irq_grp_save { + u32 con; + u32 fltcon; + u32 mask; +} eint_grp_save[4]; + +static u32 irq_uart_mask[CONFIG_SERIAL_SAMSUNG_UARTS]; + +static int s5p64x0_irq_pm_suspend(void) +{ + struct irq_grp_save *grp = eint_grp_save; + int i; + + S3C_PMDBG("%s: suspending IRQs\n", __func__); + + s3c_pm_do_save(irq_save, ARRAY_SIZE(irq_save)); + + for (i = 0; i < CONFIG_SERIAL_SAMSUNG_UARTS; i++) + irq_uart_mask[i] = __raw_readl(S3C_VA_UARTx(i) + S3C64XX_UINTM); + + for (i = 0; i < ARRAY_SIZE(eint_grp_save); i++, grp++) { + grp->con = __raw_readl(S5P64X0_EINT12CON + (i * 4)); + grp->mask = __raw_readl(S5P64X0_EINT12MASK + (i * 4)); + grp->fltcon = __raw_readl(S5P64X0_EINT12FLTCON + (i * 4)); + } + + return 0; +} + +static void s5p64x0_irq_pm_resume(void) +{ + struct irq_grp_save *grp = eint_grp_save; + int i; + + S3C_PMDBG("%s: resuming IRQs\n", __func__); + + s3c_pm_do_restore(irq_save, ARRAY_SIZE(irq_save)); + + for (i = 0; i < CONFIG_SERIAL_SAMSUNG_UARTS; i++) + __raw_writel(irq_uart_mask[i], S3C_VA_UARTx(i) + S3C64XX_UINTM); + + for (i = 0; i < ARRAY_SIZE(eint_grp_save); i++, grp++) { + __raw_writel(grp->con, S5P64X0_EINT12CON + (i * 4)); + __raw_writel(grp->mask, S5P64X0_EINT12MASK + (i * 4)); + __raw_writel(grp->fltcon, S5P64X0_EINT12FLTCON + (i * 4)); + } + + S3C_PMDBG("%s: IRQ configuration restored\n", __func__); +} + +static struct syscore_ops s5p64x0_irq_syscore_ops = { + .suspend = s5p64x0_irq_pm_suspend, + .resume = s5p64x0_irq_pm_resume, +}; + +static int __init s5p64x0_syscore_init(void) +{ + register_syscore_ops(&s5p64x0_irq_syscore_ops); + + return 0; +} +core_initcall(s5p64x0_syscore_init); |