diff options
Diffstat (limited to 'arch/arm/mach-omap2/omap_hwmod.c')
| -rw-r--r-- | arch/arm/mach-omap2/omap_hwmod.c | 98 | 
1 files changed, 49 insertions, 49 deletions
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index ee9416bcc3e..5192cabb40e 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -752,27 +752,65 @@ static void _enable_module(struct omap_hwmod *oh)  }  /** - * _disable_module - enable CLKCTRL modulemode on OMAP4 + * _omap4_wait_target_disable - wait for a module to be disabled on OMAP4 + * @oh: struct omap_hwmod * + * + * Wait for a module @oh to enter slave idle.  Returns 0 if the module + * does not have an IDLEST bit or if the module successfully enters + * slave idle; otherwise, pass along the return value of the + * appropriate *_cm*_wait_module_idle() function. + */ +static int _omap4_wait_target_disable(struct omap_hwmod *oh) +{ +	if (!cpu_is_omap44xx()) +		return 0; + +	if (!oh) +		return -EINVAL; + +	if (oh->_int_flags & _HWMOD_NO_MPU_PORT) +		return 0; + +	if (oh->flags & HWMOD_NO_IDLEST) +		return 0; + +	return omap4_cminst_wait_module_idle(oh->clkdm->prcm_partition, +					     oh->clkdm->cm_inst, +					     oh->clkdm->clkdm_offs, +					     oh->prcm.omap4.clkctrl_offs); +} + +/** + * _omap4_disable_module - enable CLKCTRL modulemode on OMAP4   * @oh: struct omap_hwmod *   *   * Disable the PRCM module mode related to the hwmod @oh. - * No return value. + * Return EINVAL if the modulemode is not supported and 0 in case of success.   */ -static void _disable_module(struct omap_hwmod *oh) +static int _omap4_disable_module(struct omap_hwmod *oh)  { +	int v; +  	/* The module mode does not exist prior OMAP4 */ -	if (cpu_is_omap24xx() || cpu_is_omap34xx()) -		return; +	if (!cpu_is_omap44xx()) +		return -EINVAL;  	if (!oh->clkdm || !oh->prcm.omap4.modulemode) -		return; +		return -EINVAL; -	pr_debug("omap_hwmod: %s: _disable_module\n", oh->name); +	pr_debug("omap_hwmod: %s: %s\n", oh->name, __func__);  	omap4_cminst_module_disable(oh->clkdm->prcm_partition,  				    oh->clkdm->cm_inst,  				    oh->clkdm->clkdm_offs,  				    oh->prcm.omap4.clkctrl_offs); + +	v = _omap4_wait_target_disable(oh); +	if (v) +		pr_warn("omap_hwmod: %s: _wait_target_disable failed\n", +			oh->name); + +	return 0;  }  /** @@ -1199,36 +1237,6 @@ static int _wait_target_ready(struct omap_hwmod *oh)  }  /** - * _wait_target_disable - wait for a module to be disabled - * @oh: struct omap_hwmod * - * - * Wait for a module @oh to enter slave idle.  Returns 0 if the module - * does not have an IDLEST bit or if the module successfully enters - * slave idle; otherwise, pass along the return value of the - * appropriate *_cm*_wait_module_idle() function. - */ -static int _wait_target_disable(struct omap_hwmod *oh) -{ -	/* TODO: For now just handle OMAP4+ */ -	if (cpu_is_omap24xx() || cpu_is_omap34xx()) -		return 0; - -	if (!oh) -		return -EINVAL; - -	if (oh->_int_flags & _HWMOD_NO_MPU_PORT) -		return 0; - -	if (oh->flags & HWMOD_NO_IDLEST) -		return 0; - -	return omap4_cminst_wait_module_idle(oh->clkdm->prcm_partition, -					     oh->clkdm->cm_inst, -					     oh->clkdm->clkdm_offs, -					     oh->prcm.omap4.clkctrl_offs); -} - -/**   * _lookup_hardreset - fill register bit info for this hwmod/reset line   * @oh: struct omap_hwmod *   * @name: name of the reset line in the context of this hwmod @@ -1589,8 +1597,6 @@ static int _enable(struct omap_hwmod *oh)   */  static int _idle(struct omap_hwmod *oh)  { -	int ret; -  	pr_debug("omap_hwmod: %s: idling\n", oh->name);  	if (oh->_state != _HWMOD_STATE_ENABLED) { @@ -1602,11 +1608,9 @@ static int _idle(struct omap_hwmod *oh)  	if (oh->class->sysc)  		_idle_sysc(oh);  	_del_initiator_dep(oh, mpu_oh); -	_disable_module(oh); -	ret = _wait_target_disable(oh); -	if (ret) -		pr_warn("omap_hwmod: %s: _wait_target_disable failed\n", -			oh->name); + +	_omap4_disable_module(oh); +  	/*  	 * The module must be in idle mode before disabling any parents  	 * clocks. Otherwise, the parent clock might be disabled before @@ -1707,11 +1711,7 @@ static int _shutdown(struct omap_hwmod *oh)  	if (oh->_state == _HWMOD_STATE_ENABLED) {  		_del_initiator_dep(oh, mpu_oh);  		/* XXX what about the other system initiators here? dma, dsp */ -		_disable_module(oh); -		ret = _wait_target_disable(oh); -		if (ret) -			pr_warn("omap_hwmod: %s: _wait_target_disable failed\n", -				oh->name); +		_omap4_disable_module(oh);  		_disable_clocks(oh);  		if (oh->clkdm)  			clkdm_hwmod_disable(oh->clkdm, oh);  |