diff options
author | Paul Walmsley <paul@pwsan.com> | 2012-02-02 02:30:50 -0700 |
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committer | Kevin Hilman <khilman@ti.com> | 2012-03-05 16:01:19 -0800 |
commit | 1416408d31236dc2a80d269aa23ffa93aa01e833 (patch) | |
tree | fb77d8bad2e21597ed5d0b34fdd040044999e2c2 /arch/arm/mach-omap2/pm.c | |
parent | b7c39a3f59ae55aa49ebf670e9329bc7da6d3c65 (diff) | |
download | linux-1416408d31236dc2a80d269aa23ffa93aa01e833.tar.bz2 |
ARM: OMAP2+: PM: share some suspend-related functions across OMAP2, 3, 4
The platform_suspend_ops can be shared across OMAP2, 3, and 4, along
with all of the functions referenced in that structure. This patch
shares them. It also removes the suspend_state file-scoped variable
in the OMAP2 and 3 PM code; it does not appear to be actually needed
by anything.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
[khilman@ti.com: minor rework needed due to rebase/merge with conflicting changes]
Signed-off-by: Kevin Hilman <khilman@ti.com>
Diffstat (limited to 'arch/arm/mach-omap2/pm.c')
-rw-r--r-- | arch/arm/mach-omap2/pm.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c index f9e807958f3e..28706696a341 100644 --- a/arch/arm/mach-omap2/pm.c +++ b/arch/arm/mach-omap2/pm.c @@ -15,11 +15,13 @@ #include <linux/err.h> #include <linux/opp.h> #include <linux/export.h> +#include <linux/suspend.h> #include <plat/omap-pm.h> #include <plat/omap_device.h> #include "common.h" +#include "prcm-common.h" #include "voltage.h" #include "powerdomain.h" #include "clockdomain.h" @@ -28,6 +30,12 @@ static struct omap_device_pm_latency *pm_lats; +/* + * omap_pm_suspend: points to a function that does the SoC-specific + * suspend work + */ +int (*omap_pm_suspend)(void); + static int __init _init_omap_device(char *name) { struct omap_hwmod *oh; @@ -134,6 +142,8 @@ int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 pwrst) return ret; } + + /* * This API is to be called during init to set the various voltage * domains to the voltage as per the opp table. Typically we boot up @@ -201,6 +211,56 @@ exit: return -EINVAL; } +#ifdef CONFIG_SUSPEND +static int omap_pm_enter(suspend_state_t suspend_state) +{ + int ret = 0; + + if (!omap_pm_suspend) + return -ENOENT; /* XXX doublecheck */ + + switch (suspend_state) { + case PM_SUSPEND_STANDBY: + case PM_SUSPEND_MEM: + ret = omap_pm_suspend(); + break; + default: + ret = -EINVAL; + } + + return ret; +} + +static int omap_pm_begin(suspend_state_t state) +{ + disable_hlt(); + if (cpu_is_omap34xx()) + omap_prcm_irq_prepare(); + return 0; +} + +static void omap_pm_end(void) +{ + enable_hlt(); + return; +} + +static void omap_pm_finish(void) +{ + if (cpu_is_omap34xx()) + omap_prcm_irq_complete(); +} + +static const struct platform_suspend_ops omap_pm_ops = { + .begin = omap_pm_begin, + .end = omap_pm_end, + .enter = omap_pm_enter, + .finish = omap_pm_finish, + .valid = suspend_valid_only_mem, +}; + +#endif /* CONFIG_SUSPEND */ + static void __init omap3_init_voltages(void) { if (!cpu_is_omap34xx()) @@ -243,6 +303,10 @@ static int __init omap2_common_pm_late_init(void) /* Smartreflex device init */ omap_devinit_smartreflex(); +#ifdef CONFIG_SUSPEND + suspend_set_ops(&omap_pm_ops); +#endif + return 0; } late_initcall(omap2_common_pm_late_init); |