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ARM: shmobile: R-Mobile: Store SYSC base address in rmobile_pm_domain 

Replace the hardcoded addresses for accessing the SYSC PM domain
registers by register offsets, relative to the SYSC base address stored
in struct rmobile_pm_domain.

In the future, the SYSC base address will come from DT.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Geert Uytterhoeven 2014-12-03 14:41:44 +01:00 committed by Simon Horman
parent 4b9d62e02a
commit 25717b8573
4 changed files with 39 additions and 11 deletions
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14
arch/arm/mach-shmobile/pm-r8a7740.c
View File

@ -9,10 +9,14 @@
* for more details.
*/
#include <linux/console.h>
#include <linux/io.h>
#include <linux/suspend.h>
#include "common.h"
#include "pm-rmobile.h"
#define SYSC_BASE IOMEM(0xe6180000)
#if defined(CONFIG_PM) && !defined(CONFIG_ARCH_MULTIPLATFORM)
static int r8a7740_pd_a3sm_suspend(void)
{
@ -45,41 +49,51 @@ static int r8a7740_pd_d4_suspend(void)
static struct rmobile_pm_domain r8a7740_pm_domains[] = {
{
.genpd.name = "A4LC",
.base = SYSC_BASE,
.bit_shift = 1,
}, {
.genpd.name = "A4MP",
.base = SYSC_BASE,
.bit_shift = 2,
}, {
.genpd.name = "D4",
.base = SYSC_BASE,
.bit_shift = 3,
.gov = &pm_domain_always_on_gov,
.suspend = r8a7740_pd_d4_suspend,
}, {
.genpd.name = "A4R",
.base = SYSC_BASE,
.bit_shift = 5,
}, {
.genpd.name = "A3RV",
.base = SYSC_BASE,
.bit_shift = 6,
}, {
.genpd.name = "A4S",
.base = SYSC_BASE,
.bit_shift = 10,
.no_debug = true,
}, {
.genpd.name = "A3SP",
.base = SYSC_BASE,
.bit_shift = 11,
.gov = &pm_domain_always_on_gov,
.no_debug = true,
.suspend = r8a7740_pd_a3sp_suspend,
}, {
.genpd.name = "A3SM",
.base = SYSC_BASE,
.bit_shift = 12,
.gov = &pm_domain_always_on_gov,
.suspend = r8a7740_pd_a3sm_suspend,
}, {
.genpd.name = "A3SG",
.base = SYSC_BASE,
.bit_shift = 13,
}, {
.genpd.name = "A4SU",
.base = SYSC_BASE,
.bit_shift = 20,
},
};

24
arch/arm/mach-shmobile/pm-rmobile.c
View File

@ -20,9 +20,9 @@
#include "pm-rmobile.h"
/* SYSC */
#define SPDCR IOMEM(0xe6180008)
#define SWUCR IOMEM(0xe6180014)
#define PSTR IOMEM(0xe6180080)
#define SPDCR 0x08 /* SYS Power Down Control Register */
#define SWUCR 0x14 /* SYS Wakeup Control Register */
#define PSTR 0x80 /* Power Status Register */
#define PSTR_RETRIES 100
#define PSTR_DELAY_US 10
@ -39,12 +39,12 @@ static int rmobile_pd_power_down(struct generic_pm_domain *genpd)
return ret;
}
if (__raw_readl(PSTR) & mask) {
if (__raw_readl(rmobile_pd->base + PSTR) & mask) {
unsigned int retry_count;
__raw_writel(mask, SPDCR);
__raw_writel(mask, rmobile_pd->base + SPDCR);
for (retry_count = PSTR_RETRIES; retry_count; retry_count--) {
if (!(__raw_readl(SPDCR) & mask))
if (!(__raw_readl(rmobile_pd->base + SPDCR) & mask))
break;
cpu_relax();
}
@ -52,7 +52,8 @@ static int rmobile_pd_power_down(struct generic_pm_domain *genpd)
if (!rmobile_pd->no_debug)
pr_debug("%s: Power off, 0x%08x -> PSTR = 0x%08x\n",
genpd->name, mask, __raw_readl(PSTR));
genpd->name, mask,
__raw_readl(rmobile_pd->base + PSTR));
return 0;
}
@ -64,13 +65,13 @@ static int __rmobile_pd_power_up(struct rmobile_pm_domain *rmobile_pd,
unsigned int retry_count;
int ret = 0;
if (__raw_readl(PSTR) & mask)
if (__raw_readl(rmobile_pd->base + PSTR) & mask)
goto out;
__raw_writel(mask, SWUCR);
__raw_writel(mask, rmobile_pd->base + SWUCR);
for (retry_count = 2 * PSTR_RETRIES; retry_count; retry_count--) {
if (!(__raw_readl(SWUCR) & mask))
if (!(__raw_readl(rmobile_pd->base + SWUCR) & mask))
break;
if (retry_count > PSTR_RETRIES)
udelay(PSTR_DELAY_US);
@ -82,7 +83,8 @@ static int __rmobile_pd_power_up(struct rmobile_pm_domain *rmobile_pd,
if (!rmobile_pd->no_debug)
pr_debug("%s: Power on, 0x%08x -> PSTR = 0x%08x\n",
rmobile_pd->genpd.name, mask, __raw_readl(PSTR));
rmobile_pd->genpd.name, mask,
__raw_readl(rmobile_pd->base + PSTR));
out:
if (ret == 0 && rmobile_pd->resume && do_resume)

1
arch/arm/mach-shmobile/pm-rmobile.h
View File

@ -21,6 +21,7 @@ struct rmobile_pm_domain {
struct dev_power_governor *gov;
int (*suspend)(void);
void (*resume)(void);
void __iomem *base;
unsigned int bit_shift;
bool no_debug;
};

11
arch/arm/mach-shmobile/pm-sh7372.c
View File

@ -45,6 +45,8 @@
#define PLLC01STPCR IOMEM(0xe61500c8)
/* SYSC */
#define SYSC_BASE IOMEM(0xe6180000)
#define SBAR IOMEM(0xe6180020)
#define WUPRMSK IOMEM(0xe6180028)
#define WUPSMSK IOMEM(0xe618002c)
@ -118,24 +120,28 @@ static struct rmobile_pm_domain sh7372_pm_domains[] = {
.genpd.name = "A4LC",
.genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
.genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
.base = SYSC_BASE,
.bit_shift = 1,
},
{
.genpd.name = "A4MP",
.genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
.genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
.base = SYSC_BASE,
.bit_shift = 2,
},
{
.genpd.name = "D4",
.genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
.genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
.base = SYSC_BASE,
.bit_shift = 3,
},
{
.genpd.name = "A4R",
.genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
.genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
.base = SYSC_BASE,
.bit_shift = 5,
.suspend = sh7372_a4r_pd_suspend,
.resume = sh7372_intcs_resume,
@ -144,18 +150,21 @@ static struct rmobile_pm_domain sh7372_pm_domains[] = {
.genpd.name = "A3RV",
.genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
.genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
.base = SYSC_BASE,
.bit_shift = 6,
},
{
.genpd.name = "A3RI",
.genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
.genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
.base = SYSC_BASE,
.bit_shift = 8,
},
{
.genpd.name = "A4S",
.genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
.genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
.base = SYSC_BASE,
.bit_shift = 10,
.gov = &pm_domain_always_on_gov,
.no_debug = true,
@ -166,6 +175,7 @@ static struct rmobile_pm_domain sh7372_pm_domains[] = {
.genpd.name = "A3SP",
.genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
.genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
.base = SYSC_BASE,
.bit_shift = 11,
.gov = &pm_domain_always_on_gov,
.no_debug = true,
@ -175,6 +185,7 @@ static struct rmobile_pm_domain sh7372_pm_domains[] = {
.genpd.name = "A3SG",
.genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
.genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
.base = SYSC_BASE,
.bit_shift = 13,
},
};