#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 <mach/common.h>
-#include <mach/r8a7779.h>
-static void __iomem *r8a7779_sysc_base;
+#include "common.h"
+#include "pm-rcar.h"
+#include "r8a7779.h"
/* SYSC */
-#define SYSCSR 0x00
-#define SYSCISR 0x04
-#define SYSCISCR 0x08
#define SYSCIER 0x0c
#define SYSCIMR 0x10
-#define PWRSR0 0x40
-#define PWRSR1 0x80
-#define PWRSR2 0xc0
-#define PWRSR3 0x100
-#define PWRSR4 0x140
-
-#define PWRSR_OFFS 0x00
-#define PWROFFCR_OFFS 0x04
-#define PWRONCR_OFFS 0x0c
-#define PWRER_OFFS 0x14
-
-#define SYSCSR_RETRIES 100
-#define SYSCSR_DELAY_US 1
-
-#define SYSCISR_RETRIES 1000
-#define SYSCISR_DELAY_US 1
-
-#if defined(CONFIG_PM) || defined(CONFIG_SMP)
-
-static DEFINE_SPINLOCK(r8a7779_sysc_lock); /* SMP CPUs + I/O devices */
-
-static int r8a7779_sysc_pwr_on_off(struct r8a7779_pm_ch *r8a7779_ch,
- int sr_bit, int reg_offs)
-{
- int k;
-
- for (k = 0; k < SYSCSR_RETRIES; k++) {
- if (ioread32(r8a7779_sysc_base + SYSCSR) & (1 << sr_bit))
- break;
- udelay(SYSCSR_DELAY_US);
- }
-
- if (k == SYSCSR_RETRIES)
- return -EAGAIN;
-
- iowrite32(1 << r8a7779_ch->chan_bit,
- r8a7779_sysc_base + r8a7779_ch->chan_offs + reg_offs);
-
- return 0;
-}
-static int r8a7779_sysc_pwr_off(struct r8a7779_pm_ch *r8a7779_ch)
-{
- return r8a7779_sysc_pwr_on_off(r8a7779_ch, 0, PWROFFCR_OFFS);
-}
-
-static int r8a7779_sysc_pwr_on(struct r8a7779_pm_ch *r8a7779_ch)
-{
- return r8a7779_sysc_pwr_on_off(r8a7779_ch, 1, PWRONCR_OFFS);
-}
-
-static int r8a7779_sysc_update(struct r8a7779_pm_ch *r8a7779_ch,
- int (*on_off_fn)(struct r8a7779_pm_ch *))
-{
- unsigned int isr_mask = 1 << r8a7779_ch->isr_bit;
- unsigned int chan_mask = 1 << r8a7779_ch->chan_bit;
- unsigned int status;
- unsigned long flags;
- int ret = 0;
- int k;
-
- spin_lock_irqsave(&r8a7779_sysc_lock, flags);
-
- iowrite32(isr_mask, r8a7779_sysc_base + SYSCISCR);
-
- do {
- ret = on_off_fn(r8a7779_ch);
- if (ret)
- goto out;
-
- status = ioread32(r8a7779_sysc_base +
- r8a7779_ch->chan_offs + PWRER_OFFS);
- } while (status & chan_mask);
-
- for (k = 0; k < SYSCISR_RETRIES; k++) {
- if (ioread32(r8a7779_sysc_base + SYSCISR) & isr_mask)
- break;
- udelay(SYSCISR_DELAY_US);
- }
-
- if (k == SYSCISR_RETRIES)
- ret = -EIO;
-
- iowrite32(isr_mask, r8a7779_sysc_base + SYSCISCR);
-
- out:
- spin_unlock_irqrestore(&r8a7779_sysc_lock, flags);
-
- pr_debug("r8a7779 power domain %d: %02x %02x %02x %02x %02x -> %d\n",
- r8a7779_ch->isr_bit, ioread32(r8a7779_sysc_base + PWRSR0),
- ioread32(r8a7779_sysc_base + PWRSR1),
- ioread32(r8a7779_sysc_base + PWRSR2),
- ioread32(r8a7779_sysc_base + PWRSR3),
- ioread32(r8a7779_sysc_base + PWRSR4), ret);
- return ret;
-}
+struct r8a7779_pm_domain {
+ struct generic_pm_domain genpd;
+ struct rcar_sysc_ch ch;
+};
-int r8a7779_sysc_power_down(struct r8a7779_pm_ch *r8a7779_ch)
+static inline struct rcar_sysc_ch *to_r8a7779_ch(struct generic_pm_domain *d)
{
- return r8a7779_sysc_update(r8a7779_ch, r8a7779_sysc_pwr_off);
+ return &container_of(d, struct r8a7779_pm_domain, genpd)->ch;
}
-int r8a7779_sysc_power_up(struct r8a7779_pm_ch *r8a7779_ch)
-{
- return r8a7779_sysc_update(r8a7779_ch, r8a7779_sysc_pwr_on);
-}
+#if defined(CONFIG_PM) || defined(CONFIG_SMP)
static void __init r8a7779_sysc_init(void)
{
- r8a7779_sysc_base = ioremap_nocache(0xffd85000, PAGE_SIZE);
- if (!r8a7779_sysc_base)
- panic("unable to ioremap r8a7779 SYSC hardware block\n");
+ void __iomem *base = rcar_sysc_init(0xffd85000);
/* enable all interrupt sources, but do not use interrupt handler */
- iowrite32(0x0131000e, r8a7779_sysc_base + SYSCIER);
- iowrite32(0, r8a7779_sysc_base + SYSCIMR);
+ iowrite32(0x0131000e, base + SYSCIER);
+ iowrite32(0, base + SYSCIMR);
}
#else /* CONFIG_PM || CONFIG_SMP */
static int pd_power_down(struct generic_pm_domain *genpd)
{
- return r8a7779_sysc_power_down(to_r8a7779_ch(genpd));
+ return rcar_sysc_power_down(to_r8a7779_ch(genpd));
}
static int pd_power_up(struct generic_pm_domain *genpd)
{
- return r8a7779_sysc_power_up(to_r8a7779_ch(genpd));
+ return rcar_sysc_power_up(to_r8a7779_ch(genpd));
}
static bool pd_is_off(struct generic_pm_domain *genpd)
{
- struct r8a7779_pm_ch *r8a7779_ch = to_r8a7779_ch(genpd);
- unsigned int st;
-
- st = ioread32(r8a7779_sysc_base + r8a7779_ch->chan_offs + PWRSR_OFFS);
- if (st & (1 << r8a7779_ch->chan_bit))
- return true;
-
- return false;
+ return rcar_sysc_power_is_off(to_r8a7779_ch(genpd));
}
static bool pd_active_wakeup(struct device *dev)
genpd->dev_ops.stop = pm_clk_suspend;
genpd->dev_ops.start = pm_clk_resume;
genpd->dev_ops.active_wakeup = pd_active_wakeup;
- genpd->dev_irq_safe = true;
genpd->power_off = pd_power_down;
genpd->power_on = pd_power_up;
projects / platform / adaptation / renesas_rcar / renesas_kernel.git / blobdiff