forked from Minki/linux
9c6a973629
Instead of using the dev_ops ->stop|start() callbacks for genpd, let's convert to use genpd's flag field and set it to GENPD_FLAG_PM_CLK. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
144 lines
2.9 KiB
C
144 lines
2.9 KiB
C
/*
|
|
* r8a7779 Power management support
|
|
*
|
|
* Copyright (C) 2011 Renesas Solutions Corp.
|
|
* Copyright (C) 2011 Magnus Damm
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
|
|
#include <linux/pm.h>
|
|
#include <linux/suspend.h>
|
|
#include <linux/err.h>
|
|
#include <linux/pm_clock.h>
|
|
#include <linux/pm_domain.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/console.h>
|
|
|
|
#include <asm/io.h>
|
|
|
|
#include "common.h"
|
|
#include "pm-rcar.h"
|
|
#include "r8a7779.h"
|
|
|
|
/* SYSC */
|
|
#define SYSCIER 0x0c
|
|
#define SYSCIMR 0x10
|
|
|
|
struct r8a7779_pm_domain {
|
|
struct generic_pm_domain genpd;
|
|
struct rcar_sysc_ch ch;
|
|
};
|
|
|
|
static inline struct rcar_sysc_ch *to_r8a7779_ch(struct generic_pm_domain *d)
|
|
{
|
|
return &container_of(d, struct r8a7779_pm_domain, genpd)->ch;
|
|
}
|
|
|
|
#if defined(CONFIG_PM) || defined(CONFIG_SMP)
|
|
|
|
static void __init r8a7779_sysc_init(void)
|
|
{
|
|
void __iomem *base = rcar_sysc_init(0xffd85000);
|
|
|
|
/* enable all interrupt sources, but do not use interrupt handler */
|
|
iowrite32(0x0131000e, base + SYSCIER);
|
|
iowrite32(0, base + SYSCIMR);
|
|
}
|
|
|
|
#else /* CONFIG_PM || CONFIG_SMP */
|
|
|
|
static inline void r8a7779_sysc_init(void) {}
|
|
|
|
#endif /* CONFIG_PM || CONFIG_SMP */
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
static int pd_power_down(struct generic_pm_domain *genpd)
|
|
{
|
|
return rcar_sysc_power_down(to_r8a7779_ch(genpd));
|
|
}
|
|
|
|
static int pd_power_up(struct generic_pm_domain *genpd)
|
|
{
|
|
return rcar_sysc_power_up(to_r8a7779_ch(genpd));
|
|
}
|
|
|
|
static bool pd_is_off(struct generic_pm_domain *genpd)
|
|
{
|
|
return rcar_sysc_power_is_off(to_r8a7779_ch(genpd));
|
|
}
|
|
|
|
static bool pd_active_wakeup(struct device *dev)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static void r8a7779_init_pm_domain(struct r8a7779_pm_domain *r8a7779_pd)
|
|
{
|
|
struct generic_pm_domain *genpd = &r8a7779_pd->genpd;
|
|
|
|
genpd->flags = GENPD_FLAG_PM_CLK;
|
|
pm_genpd_init(genpd, NULL, false);
|
|
genpd->dev_ops.active_wakeup = pd_active_wakeup;
|
|
genpd->power_off = pd_power_down;
|
|
genpd->power_on = pd_power_up;
|
|
|
|
if (pd_is_off(&r8a7779_pd->genpd))
|
|
pd_power_up(&r8a7779_pd->genpd);
|
|
}
|
|
|
|
static struct r8a7779_pm_domain r8a7779_pm_domains[] = {
|
|
{
|
|
.genpd.name = "SH4A",
|
|
.ch = {
|
|
.chan_offs = 0x80, /* PWRSR1 .. PWRER1 */
|
|
.isr_bit = 16, /* SH4A */
|
|
},
|
|
},
|
|
{
|
|
.genpd.name = "SGX",
|
|
.ch = {
|
|
.chan_offs = 0xc0, /* PWRSR2 .. PWRER2 */
|
|
.isr_bit = 20, /* SGX */
|
|
},
|
|
},
|
|
{
|
|
.genpd.name = "VDP1",
|
|
.ch = {
|
|
.chan_offs = 0x100, /* PWRSR3 .. PWRER3 */
|
|
.isr_bit = 21, /* VDP */
|
|
},
|
|
},
|
|
{
|
|
.genpd.name = "IMPX3",
|
|
.ch = {
|
|
.chan_offs = 0x140, /* PWRSR4 .. PWRER4 */
|
|
.isr_bit = 24, /* IMP */
|
|
},
|
|
},
|
|
};
|
|
|
|
void __init r8a7779_init_pm_domains(void)
|
|
{
|
|
int j;
|
|
|
|
for (j = 0; j < ARRAY_SIZE(r8a7779_pm_domains); j++)
|
|
r8a7779_init_pm_domain(&r8a7779_pm_domains[j]);
|
|
}
|
|
|
|
#endif /* CONFIG_PM */
|
|
|
|
void __init r8a7779_pm_init(void)
|
|
{
|
|
static int once;
|
|
|
|
if (!once++)
|
|
r8a7779_sysc_init();
|
|
}
|