mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-05 18:39:59 +00:00
![Abhilash Kesavan](/assets/img/avatar_default.png)
Add suspend-to-ram support for SMDK6440/50 Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
/* 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);
|