Merge "regulator: cpr-regulator: Add panic handler to dump voltage information" (b7a0869a) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/regulator/cpr-regulator.c

+39 −0

Original line number	Diff line number	Diff line
		@@ -404,6 +404,8 @@ struct cpr_regulator {
		bool skip_voltage_change_during_suspend;

		struct cpr_aging_info *aging_info;

		struct notifier_block panic_notifier;
		};

		#define CPR_DEBUG_MASK_IRQ BIT(0)
		@@ -6022,6 +6024,35 @@ static void cpr_debugfs_base_remove(void)

		#endif

		/**
		* cpr_panic_callback() - panic notification callback function. This function
		* is invoked when a kernel panic occurs.
		* @nfb: Notifier block pointer of CPR regulator
		* @event: Value passed unmodified to notifier function
		* @data: Pointer passed unmodified to notifier function
		*
		* Return: NOTIFY_OK
		*/
		static int cpr_panic_callback(struct notifier_block *nfb,
		unsigned long event, void *data)
		{
		struct cpr_regulator *cpr_vreg = container_of(nfb,
		struct cpr_regulator, panic_notifier);
		int corner, fuse_corner, volt;

		corner = cpr_vreg->corner;
		fuse_corner = cpr_vreg->corner_map[corner];
		if (cpr_is_allowed(cpr_vreg))
		volt = cpr_vreg->last_volt[corner];
		else
		volt = cpr_vreg->open_loop_volt[corner];

		cpr_err(cpr_vreg, "[corner:%d, fuse_corner:%d] = %d uV\n",
		corner, fuse_corner, volt);

		return NOTIFY_OK;
		}

		static int cpr_regulator_probe(struct platform_device *pdev)
		{
		struct regulator_config reg_config = {};
		@@ -6227,6 +6258,11 @@ static int cpr_regulator_probe(struct platform_device *pdev)
		}
		}

		/* Register panic notification call back */
		cpr_vreg->panic_notifier.notifier_call = cpr_panic_callback;
		atomic_notifier_chain_register(&panic_notifier_list,
		&cpr_vreg->panic_notifier);

		mutex_lock(&cpr_regulator_list_mutex);
		list_add(&cpr_vreg->list, &cpr_regulator_list);
		mutex_unlock(&cpr_regulator_list_mutex);
		@@ -6261,6 +6297,9 @@ static int cpr_regulator_remove(struct platform_device *pdev)
		sensor_mgr_remove_threshold(
		&cpr_vreg->tsens_threshold_config);

		atomic_notifier_chain_unregister(&panic_notifier_list,
		&cpr_vreg->panic_notifier);

		cpr_apc_exit(cpr_vreg);
		cpr_debugfs_remove(cpr_vreg);
		regulator_unregister(cpr_vreg->rdev);