diff options
Diffstat (limited to 'arch/arm/mach-omap2/omap_hwmod.c')
| -rw-r--r-- | arch/arm/mach-omap2/omap_hwmod.c | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index 65a8e0ae394f..b01da1ed822d 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -211,6 +211,32 @@ static int _set_softreset(struct omap_hwmod *oh, u32 *v) } /** + * _set_module_autoidle: set the OCP_SYSCONFIG AUTOIDLE field in @v + * @oh: struct omap_hwmod * + * @autoidle: desired AUTOIDLE bitfield value (0 or 1) + * @v: pointer to register contents to modify + * + * Update the module autoidle bit in @v to be @autoidle for the @oh + * hwmod. The autoidle bit controls whether the module can gate + * internal clocks automatically when it isn't doing anything; the + * exact function of this bit varies on a per-module basis. This + * function does not write to the hardware. Returns -EINVAL upon + * error or 0 upon success. + */ +static int _set_module_autoidle(struct omap_hwmod *oh, u8 autoidle, + u32 *v) +{ + if (!oh->sysconfig || + !(oh->sysconfig->sysc_flags & SYSC_HAS_AUTOIDLE)) + return -EINVAL; + + *v &= ~SYSC_AUTOIDLE_MASK; + *v |= autoidle << SYSC_AUTOIDLE_SHIFT; + + return 0; +} + +/** * _enable_wakeup: set OCP_SYSCONFIG.ENAWAKEUP bit in the hardware * @oh: struct omap_hwmod * * @@ -558,7 +584,13 @@ static void _sysc_enable(struct omap_hwmod *oh) _set_master_standbymode(oh, idlemode, &v); } - /* XXX OCP AUTOIDLE bit? */ + if (oh->sysconfig->sysc_flags & SYSC_HAS_AUTOIDLE) { + idlemode = (oh->flags & HWMOD_NO_OCP_AUTOIDLE) ? + 0 : 1; + _set_module_autoidle(oh, idlemode, &v); + } + + /* XXX OCP ENAWAKEUP bit? */ if (oh->flags & HWMOD_SET_DEFAULT_CLOCKACT && oh->sysconfig->sysc_flags & SYSC_HAS_CLOCKACTIVITY) @@ -623,7 +655,8 @@ static void _sysc_shutdown(struct omap_hwmod *oh) if (oh->sysconfig->sysc_flags & SYSC_HAS_MIDLEMODE) _set_master_standbymode(oh, HWMOD_IDLEMODE_FORCE, &v); - /* XXX clear OCP AUTOIDLE bit? */ + if (oh->sysconfig->sysc_flags & SYSC_HAS_AUTOIDLE) + _set_module_autoidle(oh, 1, &v); _write_sysconfig(v, oh); } |