Differential D14781 Diff 41072 head/sys/dev/extres/regulator/regulator.c

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head/sys/dev/extres/regulator/regulator.c

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	/* Default regulator methods. */			/* Default regulator methods. */
	static int regnode_method_enable(struct regnode *regnode, bool enable,			static int regnode_method_enable(struct regnode *regnode, bool enable,
	int *udelay);			int *udelay);
	static int regnode_method_status(struct regnode regnode, int status);			static int regnode_method_status(struct regnode regnode, int status);
	static int regnode_method_set_voltage(struct regnode *regnode, int min_uvolt,			static int regnode_method_set_voltage(struct regnode *regnode, int min_uvolt,
	int max_uvolt, int *udelay);			int max_uvolt, int *udelay);
	static int regnode_method_get_voltage(struct regnode regnode, int uvolt);			static int regnode_method_get_voltage(struct regnode regnode, int uvolt);
				static void regulator_shutdown(void *dummy);

	/*			/*
	* Regulator controller methods.			* Regulator controller methods.
	*/			*/
	static regnode_method_t regnode_methods[] = {			static regnode_method_t regnode_methods[] = {
	REGNODEMETHOD(regnode_enable, regnode_method_enable),			REGNODEMETHOD(regnode_enable, regnode_method_enable),
	REGNODEMETHOD(regnode_status, regnode_method_status),			REGNODEMETHOD(regnode_status, regnode_method_status),
	REGNODEMETHOD(regnode_set_voltage, regnode_method_set_voltage),			REGNODEMETHOD(regnode_set_voltage, regnode_method_set_voltage),
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	#define REG_TOPO_XLOCK() sx_xlock(&regnode_topo_lock)			#define REG_TOPO_XLOCK() sx_xlock(&regnode_topo_lock)
	#define REG_TOPO_UNLOCK() sx_unlock(&regnode_topo_lock)			#define REG_TOPO_UNLOCK() sx_unlock(&regnode_topo_lock)
	#define REG_TOPO_ASSERT() sx_assert(&regnode_topo_lock, SA_LOCKED)			#define REG_TOPO_ASSERT() sx_assert(&regnode_topo_lock, SA_LOCKED)
	#define REG_TOPO_XASSERT() sx_assert(&regnode_topo_lock, SA_XLOCKED)			#define REG_TOPO_XASSERT() sx_assert(&regnode_topo_lock, SA_XLOCKED)

	#define REGNODE_SLOCK(_sc) sx_slock(&((_sc)->lock))			#define REGNODE_SLOCK(_sc) sx_slock(&((_sc)->lock))
	#define REGNODE_XLOCK(_sc) sx_xlock(&((_sc)->lock))			#define REGNODE_XLOCK(_sc) sx_xlock(&((_sc)->lock))
	#define REGNODE_UNLOCK(_sc) sx_unlock(&((_sc)->lock))			#define REGNODE_UNLOCK(_sc) sx_unlock(&((_sc)->lock))

				SYSINIT(regulator_shutdown, SI_SUB_LAST, SI_ORDER_ANY, regulator_shutdown,
				NULL);

				/*
				* Disable unused regulator
				* We run this function at SI_SUB_LAST which mean that every driver that needs
				* regulator should have already enable them.
				* All the remaining regulators should be those left enabled by the bootloader
				* or enable by default by the PMIC.
				*/
				static void
				regulator_shutdown(void *dummy)
				{
				struct regnode *entry;
				int disable = 1;

				REG_TOPO_SLOCK();
				TUNABLE_INT_FETCH("hw.regulator.disable_unused", &disable);
				TAILQ_FOREACH(entry, &regnode_list, reglist_link) {
				if (entry->enable_cnt == 0 &&
				entry->std_param.always_on == 0 && disable) {
				if (bootverbose)
				printf("regulator: shuting down %s\n",
				entry->name);
				regnode_stop(entry, 0);
				}
				}
				REG_TOPO_UNLOCK();
				}

	/*			/*
	* sysctl handler			* sysctl handler
	*/			*/
	static int			static int
	regnode_uvolt_sysctl(SYSCTL_HANDLER_ARGS)			regnode_uvolt_sysctl(SYSCTL_HANDLER_ARGS)
	{			{
	struct regnode *regnode = arg1;			struct regnode *regnode = arg1;
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