diff options
Diffstat (limited to 'arch/arm/mach-omap2/cm33xx.c')
| -rw-r--r-- | arch/arm/mach-omap2/cm33xx.c | 61 |
1 files changed, 41 insertions, 20 deletions
diff --git a/arch/arm/mach-omap2/cm33xx.c b/arch/arm/mach-omap2/cm33xx.c index b3f99e93def..b9ad463a368 100644 --- a/arch/arm/mach-omap2/cm33xx.c +++ b/arch/arm/mach-omap2/cm33xx.c @@ -96,13 +96,12 @@ static inline u32 am33xx_cm_read_reg_bits(u16 inst, s16 idx, u32 mask) /** * _clkctrl_idlest - read a CM_*_CLKCTRL register; mask & shift IDLEST bitfield * @inst: CM instance register offset (*_INST macro) - * @cdoffs: Clockdomain register offset (*_CDOFFS macro) * @clkctrl_offs: Module clock control register offset (*_CLKCTRL macro) * * Return the IDLEST bitfield of a CM_*_CLKCTRL register, shifted down to * bit 0. */ -static u32 _clkctrl_idlest(u16 inst, s16 cdoffs, u16 clkctrl_offs) +static u32 _clkctrl_idlest(u16 inst, u16 clkctrl_offs) { u32 v = am33xx_cm_read_reg(inst, clkctrl_offs); v &= AM33XX_IDLEST_MASK; @@ -113,17 +112,16 @@ static u32 _clkctrl_idlest(u16 inst, s16 cdoffs, u16 clkctrl_offs) /** * _is_module_ready - can module registers be accessed without causing an abort? * @inst: CM instance register offset (*_INST macro) - * @cdoffs: Clockdomain register offset (*_CDOFFS macro) * @clkctrl_offs: Module clock control register offset (*_CLKCTRL macro) * * Returns true if the module's CM_*_CLKCTRL.IDLEST bitfield is either * *FUNCTIONAL or *INTERFACE_IDLE; false otherwise. */ -static bool _is_module_ready(u16 inst, s16 cdoffs, u16 clkctrl_offs) +static bool _is_module_ready(u16 inst, u16 clkctrl_offs) { u32 v; - v = _clkctrl_idlest(inst, cdoffs, clkctrl_offs); + v = _clkctrl_idlest(inst, clkctrl_offs); return (v == CLKCTRL_IDLEST_FUNCTIONAL || v == CLKCTRL_IDLEST_INTERFACE_IDLE) ? true : false; @@ -158,7 +156,7 @@ static void _clktrctrl_write(u8 c, u16 inst, u16 cdoffs) * Returns true if the clockdomain referred to by (@inst, @cdoffs) * is in hardware-supervised idle mode, or 0 otherwise. */ -bool am33xx_cm_is_clkdm_in_hwsup(u16 inst, u16 cdoffs) +static bool am33xx_cm_is_clkdm_in_hwsup(u16 inst, u16 cdoffs) { u32 v; @@ -177,7 +175,7 @@ bool am33xx_cm_is_clkdm_in_hwsup(u16 inst, u16 cdoffs) * Put a clockdomain referred to by (@inst, @cdoffs) into * hardware-supervised idle mode. No return value. */ -void am33xx_cm_clkdm_enable_hwsup(u16 inst, u16 cdoffs) +static void am33xx_cm_clkdm_enable_hwsup(u16 inst, u16 cdoffs) { _clktrctrl_write(OMAP34XX_CLKSTCTRL_ENABLE_AUTO, inst, cdoffs); } @@ -191,7 +189,7 @@ void am33xx_cm_clkdm_enable_hwsup(u16 inst, u16 cdoffs) * software-supervised idle mode, i.e., controlled manually by the * Linux OMAP clockdomain code. No return value. */ -void am33xx_cm_clkdm_disable_hwsup(u16 inst, u16 cdoffs) +static void am33xx_cm_clkdm_disable_hwsup(u16 inst, u16 cdoffs) { _clktrctrl_write(OMAP34XX_CLKSTCTRL_DISABLE_AUTO, inst, cdoffs); } @@ -204,7 +202,7 @@ void am33xx_cm_clkdm_disable_hwsup(u16 inst, u16 cdoffs) * Put a clockdomain referred to by (@inst, @cdoffs) into idle * No return value. */ -void am33xx_cm_clkdm_force_sleep(u16 inst, u16 cdoffs) +static void am33xx_cm_clkdm_force_sleep(u16 inst, u16 cdoffs) { _clktrctrl_write(OMAP34XX_CLKSTCTRL_FORCE_SLEEP, inst, cdoffs); } @@ -217,7 +215,7 @@ void am33xx_cm_clkdm_force_sleep(u16 inst, u16 cdoffs) * Take a clockdomain referred to by (@inst, @cdoffs) out of idle, * waking it up. No return value. */ -void am33xx_cm_clkdm_force_wakeup(u16 inst, u16 cdoffs) +static void am33xx_cm_clkdm_force_wakeup(u16 inst, u16 cdoffs) { _clktrctrl_write(OMAP34XX_CLKSTCTRL_FORCE_WAKEUP, inst, cdoffs); } @@ -228,20 +226,22 @@ void am33xx_cm_clkdm_force_wakeup(u16 inst, u16 cdoffs) /** * am33xx_cm_wait_module_ready - wait for a module to be in 'func' state + * @part: PRCM partition, ignored for AM33xx * @inst: CM instance register offset (*_INST macro) - * @cdoffs: Clockdomain register offset (*_CDOFFS macro) * @clkctrl_offs: Module clock control register offset (*_CLKCTRL macro) + * @bit_shift: bit shift for the register, ignored for AM33xx * * Wait for the module IDLEST to be functional. If the idle state is in any * the non functional state (trans, idle or disabled), module and thus the * sysconfig cannot be accessed and will probably lead to an "imprecise * external abort" */ -int am33xx_cm_wait_module_ready(u16 inst, s16 cdoffs, u16 clkctrl_offs) +static int am33xx_cm_wait_module_ready(u8 part, s16 inst, u16 clkctrl_offs, + u8 bit_shift) { int i = 0; - omap_test_timeout(_is_module_ready(inst, cdoffs, clkctrl_offs), + omap_test_timeout(_is_module_ready(inst, clkctrl_offs), MAX_MODULE_READY_TIME, i); return (i < MAX_MODULE_READY_TIME) ? 0 : -EBUSY; @@ -250,22 +250,24 @@ int am33xx_cm_wait_module_ready(u16 inst, s16 cdoffs, u16 clkctrl_offs) /** * am33xx_cm_wait_module_idle - wait for a module to be in 'disabled' * state + * @part: CM partition, ignored for AM33xx * @inst: CM instance register offset (*_INST macro) - * @cdoffs: Clockdomain register offset (*_CDOFFS macro) * @clkctrl_offs: Module clock control register offset (*_CLKCTRL macro) + * @bit_shift: bit shift for the register, ignored for AM33xx * * Wait for the module IDLEST to be disabled. Some PRCM transition, * like reset assertion or parent clock de-activation must wait the * module to be fully disabled. */ -int am33xx_cm_wait_module_idle(u16 inst, s16 cdoffs, u16 clkctrl_offs) +static int am33xx_cm_wait_module_idle(u8 part, s16 inst, u16 clkctrl_offs, + u8 bit_shift) { int i = 0; if (!clkctrl_offs) return 0; - omap_test_timeout((_clkctrl_idlest(inst, cdoffs, clkctrl_offs) == + omap_test_timeout((_clkctrl_idlest(inst, clkctrl_offs) == CLKCTRL_IDLEST_DISABLED), MAX_MODULE_READY_TIME, i); @@ -275,13 +277,14 @@ int am33xx_cm_wait_module_idle(u16 inst, s16 cdoffs, u16 clkctrl_offs) /** * am33xx_cm_module_enable - Enable the modulemode inside CLKCTRL * @mode: Module mode (SW or HW) + * @part: CM partition, ignored for AM33xx * @inst: CM instance register offset (*_INST macro) - * @cdoffs: Clockdomain register offset (*_CDOFFS macro) * @clkctrl_offs: Module clock control register offset (*_CLKCTRL macro) * * No return value. */ -void am33xx_cm_module_enable(u8 mode, u16 inst, s16 cdoffs, u16 clkctrl_offs) +static void am33xx_cm_module_enable(u8 mode, u8 part, u16 inst, + u16 clkctrl_offs) { u32 v; @@ -293,13 +296,13 @@ void am33xx_cm_module_enable(u8 mode, u16 inst, s16 cdoffs, u16 clkctrl_offs) /** * am33xx_cm_module_disable - Disable the module inside CLKCTRL + * @part: CM partition, ignored for AM33xx * @inst: CM instance register offset (*_INST macro) - * @cdoffs: Clockdomain register offset (*_CDOFFS macro) * @clkctrl_offs: Module clock control register offset (*_CLKCTRL macro) * * No return value. */ -void am33xx_cm_module_disable(u16 inst, s16 cdoffs, u16 clkctrl_offs) +static void am33xx_cm_module_disable(u8 part, u16 inst, u16 clkctrl_offs) { u32 v; @@ -362,3 +365,21 @@ struct clkdm_ops am33xx_clkdm_operations = { .clkdm_clk_enable = am33xx_clkdm_clk_enable, .clkdm_clk_disable = am33xx_clkdm_clk_disable, }; + +static struct cm_ll_data am33xx_cm_ll_data = { + .wait_module_ready = &am33xx_cm_wait_module_ready, + .wait_module_idle = &am33xx_cm_wait_module_idle, + .module_enable = &am33xx_cm_module_enable, + .module_disable = &am33xx_cm_module_disable, +}; + +int __init am33xx_cm_init(void) +{ + return cm_register(&am33xx_cm_ll_data); +} + +static void __exit am33xx_cm_exit(void) +{ + cm_unregister(&am33xx_cm_ll_data); +} +__exitcall(am33xx_cm_exit); |