summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-exynos/pm_domains.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2015-04-22 18:08:39 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-22 18:08:39 +0200
commite6c81cce5699ec6be3a7533b5ad7a062ab3357f2 (patch)
tree4592735bbfb17f163217d0bb80877dcc22a869c0 /arch/arm/mach-exynos/pm_domains.c
parentMerge tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/a... (diff)
parentARM: alpine: add support for generic pci (diff)
downloadlinux-e6c81cce5699ec6be3a7533b5ad7a062ab3357f2.tar.xz
linux-e6c81cce5699ec6be3a7533b5ad7a062ab3357f2.zip
Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC platform updates from Olof Johansson: "Our SoC branch usually contains expanded support for new SoCs and other core platform code. In this case, that includes: - support for the new Annapurna Labs "Alpine" platform - a rework greatly simplifying adding new platform support to the MCPM subsystem (Multi-cluster power management) - cpuidle and PM improvements for Exynos3250 - misc updates for Renesas, OMAP, Meson, i.MX. Some of these could have gone in other branches but ended up here for various reasons" * tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (53 commits) ARM: alpine: add support for generic pci ARM: Exynos: migrate DCSCB to the new MCPM backend abstraction ARM: vexpress: migrate DCSCB to the new MCPM backend abstraction ARM: vexpress: DCSCB: tighten CPU validity assertion ARM: vexpress: migrate TC2 to the new MCPM backend abstraction ARM: MCPM: move the algorithmic complexity to the core code ARM: EXYNOS: allow cpuidle driver usage on Exynos3250 SoC ARM: EXYNOS: add AFTR mode support for Exynos3250 ARM: EXYNOS: add code for setting/clearing boot flag ARM: EXYNOS: fix CPU1 hotplug on Exynos3250 ARM: S3C64XX: Use fixed IRQ bases to avoid conflicts on Cragganmore ARM: cygnus: fix const declaration bcm_cygnus_dt_compat ARM: DRA7: hwmod: Fix the hwmod class for GPTimer4 ARM: DRA7: hwmod: Add data for GPTimers 13 through 16 ARM: EXYNOS: Remove left over 'extra_save' ARM: EXYNOS: Constify exynos_pm_data array ARM: EXYNOS: use static in suspend.c ARM: EXYNOS: Use platform device name as power domain name ARM: EXYNOS: add support for async-bridge clocks for pm_domains ARM: omap-device: add missed callback for suspend-to-disk ...
Diffstat (limited to 'arch/arm/mach-exynos/pm_domains.c')
-rw-r--r--arch/arm/mach-exynos/pm_domains.c29
1 files changed, 24 insertions, 5 deletions
diff --git a/arch/arm/mach-exynos/pm_domains.c b/arch/arm/mach-exynos/pm_domains.c
index 37266a826437..cbe56b35aea0 100644
--- a/arch/arm/mach-exynos/pm_domains.c
+++ b/arch/arm/mach-exynos/pm_domains.c
@@ -37,6 +37,7 @@ struct exynos_pm_domain {
struct clk *oscclk;
struct clk *clk[MAX_CLK_PER_DOMAIN];
struct clk *pclk[MAX_CLK_PER_DOMAIN];
+ struct clk *asb_clk[MAX_CLK_PER_DOMAIN];
};
static int exynos_pd_power(struct generic_pm_domain *domain, bool power_on)
@@ -45,14 +46,19 @@ static int exynos_pd_power(struct generic_pm_domain *domain, bool power_on)
void __iomem *base;
u32 timeout, pwr;
char *op;
+ int i;
pd = container_of(domain, struct exynos_pm_domain, pd);
base = pd->base;
+ for (i = 0; i < MAX_CLK_PER_DOMAIN; i++) {
+ if (IS_ERR(pd->asb_clk[i]))
+ break;
+ clk_prepare_enable(pd->asb_clk[i]);
+ }
+
/* Set oscclk before powering off a domain*/
if (!power_on) {
- int i;
-
for (i = 0; i < MAX_CLK_PER_DOMAIN; i++) {
if (IS_ERR(pd->clk[i]))
break;
@@ -81,8 +87,6 @@ static int exynos_pd_power(struct generic_pm_domain *domain, bool power_on)
/* Restore clocks after powering on a domain*/
if (power_on) {
- int i;
-
for (i = 0; i < MAX_CLK_PER_DOMAIN; i++) {
if (IS_ERR(pd->clk[i]))
break;
@@ -92,6 +96,12 @@ static int exynos_pd_power(struct generic_pm_domain *domain, bool power_on)
}
}
+ for (i = 0; i < MAX_CLK_PER_DOMAIN; i++) {
+ if (IS_ERR(pd->asb_clk[i]))
+ break;
+ clk_disable_unprepare(pd->asb_clk[i]);
+ }
+
return 0;
}
@@ -125,12 +135,21 @@ static __init int exynos4_pm_init_power_domain(void)
return -ENOMEM;
}
- pd->pd.name = kstrdup(np->name, GFP_KERNEL);
+ pd->pd.name = kstrdup(dev_name(dev), GFP_KERNEL);
pd->name = pd->pd.name;
pd->base = of_iomap(np, 0);
pd->pd.power_off = exynos_pd_power_off;
pd->pd.power_on = exynos_pd_power_on;
+ for (i = 0; i < MAX_CLK_PER_DOMAIN; i++) {
+ char clk_name[8];
+
+ snprintf(clk_name, sizeof(clk_name), "asb%d", i);
+ pd->asb_clk[i] = clk_get(dev, clk_name);
+ if (IS_ERR(pd->asb_clk[i]))
+ break;
+ }
+
pd->oscclk = clk_get(dev, "oscclk");
if (IS_ERR(pd->oscclk))
goto no_clk;