From: Jean Pihet <j-pi...@ti.com> Hwmod is queried from the OMAP_PM layer to manage the power domains wake-up latency constraints. Hwmod retrieves the correct power domain and if it exists it calls the corresponding power domain function.
Tested on OMAP3 Beagleboard and OMAP4 Pandaboard in RET/OFF using wake-up latency constraints on MPU, CORE and PER. Signed-off-by: Jean Pihet <j-pi...@ti.com> --- arch/arm/mach-omap2/omap_hwmod.c | 26 +++++++++++++++++++++++++- arch/arm/plat-omap/include/plat/omap_hwmod.h | 2 ++ 2 files changed, 27 insertions(+), 1 deletions(-) diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index 84cc0bd..c6b1cc9 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -143,6 +143,7 @@ #include "powerdomain.h" #include <plat/clock.h> #include <plat/omap_hwmod.h> +#include <plat/omap_device.h> #include <plat/prcm.h> #include "cm2xxx_3xxx.h" @@ -2618,11 +2619,34 @@ ohsps_unlock: return ret; } +/* + * omap_hwmod_set_wkup_constraint- set/release a wake-up latency constraint + * + * @oh: struct omap_hwmod* to which the target device belongs to. + * @cookie: identifier of the constraints list for @oh. + * @min_latency: the minimum allowed wake-up latency for @oh. + * + * Returns 0 upon success. + */ +int omap_hwmod_set_wkup_lat_constraint(struct omap_hwmod *oh, + void *cookie, long min_latency) +{ + struct powerdomain *pwrdm = omap_hwmod_get_pwrdm(oh); + + if (!pwrdm) { + pr_err("%s: Error: could not find powerdomain " + "for %s\n", __func__, oh->name); + return -EINVAL; + } + + return pwrdm_set_wkup_lat_constraint(pwrdm, cookie, min_latency); +} + /** * omap_hwmod_get_context_loss_count - get lost context count * @oh: struct omap_hwmod * * - * Query the powerdomain of of @oh to get the context loss + * Query the powerdomain of @oh to get the context loss * count for this device. * * Returns the context loss count of the powerdomain assocated with @oh diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h b/arch/arm/plat-omap/include/plat/omap_hwmod.h index 0e329ca..75e0e7a 100644 --- a/arch/arm/plat-omap/include/plat/omap_hwmod.h +++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h @@ -603,6 +603,8 @@ int omap_hwmod_for_each_by_class(const char *classname, void *user); int omap_hwmod_set_postsetup_state(struct omap_hwmod *oh, u8 state); +int omap_hwmod_set_wkup_lat_constraint(struct omap_hwmod *oh, void *cookie, + long min_latency); u32 omap_hwmod_get_context_loss_count(struct omap_hwmod *oh); int omap_hwmod_no_setup_reset(struct omap_hwmod *oh); -- 1.7.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html