diff options
Diffstat (limited to 'arch/arm/mach-omap2/clockdomain2xxx_3xxx.c')
| -rw-r--r-- | arch/arm/mach-omap2/clockdomain2xxx_3xxx.c | 97 |
1 files changed, 82 insertions, 15 deletions
diff --git a/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c b/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c index a0d68dbecfa3..9a7792aec673 100644 --- a/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c +++ b/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c @@ -162,6 +162,19 @@ static void _disable_hwsup(struct clockdomain *clkdm) clkdm->clktrctrl_mask); } +static int omap3_clkdm_sleep(struct clockdomain *clkdm) +{ + omap3xxx_cm_clkdm_force_sleep(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + return 0; +} + +static int omap3_clkdm_wakeup(struct clockdomain *clkdm) +{ + omap3xxx_cm_clkdm_force_wakeup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + return 0; +} static int omap2_clkdm_clk_enable(struct clockdomain *clkdm) { @@ -170,6 +183,17 @@ static int omap2_clkdm_clk_enable(struct clockdomain *clkdm) if (!clkdm->clktrctrl_mask) return 0; + /* + * The CLKDM_MISSING_IDLE_REPORTING flag documentation has + * more details on the unpleasant problem this is working + * around + */ + if (clkdm->flags & CLKDM_MISSING_IDLE_REPORTING && + !(clkdm->flags & CLKDM_CAN_FORCE_SLEEP)) { + _enable_hwsup(clkdm); + return 0; + } + hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs, clkdm->clktrctrl_mask); @@ -193,6 +217,17 @@ static int omap2_clkdm_clk_disable(struct clockdomain *clkdm) if (!clkdm->clktrctrl_mask) return 0; + /* + * The CLKDM_MISSING_IDLE_REPORTING flag documentation has + * more details on the unpleasant problem this is working + * around + */ + if ((clkdm->flags & CLKDM_MISSING_IDLE_REPORTING) && + (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP)) { + omap3_clkdm_wakeup(clkdm); + return 0; + } + hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs, clkdm->clktrctrl_mask); @@ -209,36 +244,68 @@ static int omap2_clkdm_clk_disable(struct clockdomain *clkdm) return 0; } -static int omap3_clkdm_sleep(struct clockdomain *clkdm) +static void omap3_clkdm_allow_idle(struct clockdomain *clkdm) { - omap3xxx_cm_clkdm_force_sleep(clkdm->pwrdm.ptr->prcm_offs, + if (atomic_read(&clkdm->usecount) > 0) + _clkdm_add_autodeps(clkdm); + + omap3xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs, clkdm->clktrctrl_mask); - return 0; } -static int omap3_clkdm_wakeup(struct clockdomain *clkdm) +static void omap3_clkdm_deny_idle(struct clockdomain *clkdm) { - omap3xxx_cm_clkdm_force_wakeup(clkdm->pwrdm.ptr->prcm_offs, + omap3xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs, clkdm->clktrctrl_mask); - return 0; + + if (atomic_read(&clkdm->usecount) > 0) + _clkdm_del_autodeps(clkdm); } -static void omap3_clkdm_allow_idle(struct clockdomain *clkdm) +static int omap3xxx_clkdm_clk_enable(struct clockdomain *clkdm) { - if (atomic_read(&clkdm->usecount) > 0) - _clkdm_add_autodeps(clkdm); + bool hwsup = false; - omap3xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs, + if (!clkdm->clktrctrl_mask) + return 0; + + hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs, clkdm->clktrctrl_mask); + + if (hwsup) { + /* Disable HW transitions when we are changing deps */ + _disable_hwsup(clkdm); + _clkdm_add_autodeps(clkdm); + _enable_hwsup(clkdm); + } else { + if (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP) + omap3_clkdm_wakeup(clkdm); + } + + return 0; } -static void omap3_clkdm_deny_idle(struct clockdomain *clkdm) +static int omap3xxx_clkdm_clk_disable(struct clockdomain *clkdm) { - omap3xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs, + bool hwsup = false; + + if (!clkdm->clktrctrl_mask) + return 0; + + hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs, clkdm->clktrctrl_mask); - if (atomic_read(&clkdm->usecount) > 0) + if (hwsup) { + /* Disable HW transitions when we are changing deps */ + _disable_hwsup(clkdm); _clkdm_del_autodeps(clkdm); + _enable_hwsup(clkdm); + } else { + if (clkdm->flags & CLKDM_CAN_FORCE_SLEEP) + omap3_clkdm_sleep(clkdm); + } + + return 0; } struct clkdm_ops omap2_clkdm_operations = { @@ -267,6 +334,6 @@ struct clkdm_ops omap3_clkdm_operations = { .clkdm_wakeup = omap3_clkdm_wakeup, .clkdm_allow_idle = omap3_clkdm_allow_idle, .clkdm_deny_idle = omap3_clkdm_deny_idle, - .clkdm_clk_enable = omap2_clkdm_clk_enable, - .clkdm_clk_disable = omap2_clkdm_clk_disable, + .clkdm_clk_enable = omap3xxx_clkdm_clk_enable, + .clkdm_clk_disable = omap3xxx_clkdm_clk_disable, }; |