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Commit 3d3842ae authored by Siddartha Mohanadoss's avatar Siddartha Mohanadoss
Browse files

thermal: tsens: Add timestamp information during tsens_poll 



Add timestamp information to check the last instance when
the health monitoring tsens_poll function gets executed.
In addition dump the registers for the temperature five
times with a sleep interval of one measurement cycle to
check if there is temperature variation.

Change-Id: I4f80004ee3329bc6bc9a6950dd74e1c77fcaa030
Signed-off-by: default avatarSiddartha Mohanadoss <smohanad@codeaurora.org>
parent 75d530af

drivers/thermal/msm-tsens.c

+33 −15
Original line number Diff line number Diff line
@@ -710,12 +710,15 @@ 
#define TSENS_DBG_BUS_ID_15		15

#define TSENS_DEBUG_LOOP_COUNT_ID_0	30

#define TSENS_DEBUG_LOOP_COUNT		5

#define TSENS_DEBUG_OFFSET_RANGE	20

#define TSENS_DEBUG_STATUS_REG_START	10

#define TSENS_DEBUG_OFFSET_RANGE	16

#define TSENS_DEBUG_OFFSET_WORD1	0x4

#define TSENS_DEBUG_OFFSET_WORD2	0x8

#define TSENS_DEBUG_OFFSET_WORD3	0xc

#define TSENS_DEBUG_OFFSET_ROW		0x10

#define TSENS_DEBUG_DECIDEGC		-400

#define TSENS_DEBUG_MIN_CYCLE		63000

#define TSENS_DEBUG_MAX_CYCLE		64000



static uint32_t tsens_sec_to_msec_value = 3000;

static uint32_t tsens_completion_timeout_hz = 2 * HZ;
@@ -824,6 +827,9 @@ struct tsens_tm_device { 
	spinlock_t			tsens_crit_lock;

	spinlock_t			tsens_upp_low_lock;

	bool				crit_set;

	unsigned long long		crit_timestamp_last_run;

	unsigned long long		crit_timestamp_last_interrupt_handled;

	unsigned long long		crit_timestamp_last_poll_request;

	struct tsens_tm_device_sensor	sensor[0];

};
@@ -1910,6 +1916,8 @@ static void tsens_poll(struct work_struct *work) 
			(TSENS_TM_SN_CRITICAL_THRESHOLD(tmdev->tsens_addr) +

			(mask * TSENS_SN_ADDR_OFFSET)));



	tmdev->crit_timestamp_last_run = sched_clock();



	spin_lock_irqsave(&tmdev->tsens_crit_lock, flags);

	tmdev->crit_set = true;

	reg_cntl = readl_relaxed(TSENS_TM_CRITICAL_INT_MASK(tmdev->tsens_addr));
@@ -1940,6 +1948,7 @@ static void tsens_poll(struct work_struct *work) 
		tmdev->crit_set = false;

		spin_unlock_irqrestore(&tmdev->tsens_crit_lock, flags);



		tmdev->crit_timestamp_last_poll_request = sched_clock();

		if (status & TSENS_TM_SN_STATUS_CRITICAL_STATUS) {



			spin_lock_irqsave(&tmdev->tsens_crit_lock, flags);
@@ -2022,21 +2031,29 @@ static void tsens_poll(struct work_struct *work) 
			offset += TSENS_DEBUG_OFFSET_ROW;

		}



		offset = 0;

		pr_err("Start of TSENS TM dump\n");

		for (i = 0; i < TSENS_DEBUG_OFFSET_RANGE; i++) {

		loop = 0;

		while (loop < TSENS_DEBUG_LOOP_COUNT) {

			offset = TSENS_DEBUG_OFFSET_ROW *

					TSENS_DEBUG_STATUS_REG_START;

			pr_err("Start of TSENS TM dump %d\n", loop);

			/* Limited dump of the registers for the temperature */

			for (i = 0; i < TSENS_DEBUG_LOOP_COUNT; i++) {

				r1 = readl_relaxed(controller_id_addr + offset);

			r2 = readl_relaxed(controller_id_addr + (offset +

						TSENS_DEBUG_OFFSET_WORD1));

			r3 = readl_relaxed(controller_id_addr +	(offset +

						TSENS_DEBUG_OFFSET_WORD2));

			r4 = readl_relaxed(controller_id_addr + (offset +

						TSENS_DEBUG_OFFSET_WORD3));

				r2 = readl_relaxed(controller_id_addr +

					(offset + TSENS_DEBUG_OFFSET_WORD1));

				r3 = readl_relaxed(controller_id_addr +

					(offset + TSENS_DEBUG_OFFSET_WORD2));

				r4 = readl_relaxed(controller_id_addr +

					(offset + TSENS_DEBUG_OFFSET_WORD3));



				pr_err("0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n",

					offset, r1, r2, r3, r4);

				offset += TSENS_DEBUG_OFFSET_ROW;

			}

			loop++;

			usleep_range(TSENS_DEBUG_MIN_CYCLE,

				TSENS_DEBUG_MAX_CYCLE);

		}



		BUG();

	}
@@ -2301,6 +2318,7 @@ static irqreturn_t tsens_tm_critical_irq_thread(int irq, void *data) 
		}

	}



	tm->crit_timestamp_last_interrupt_handled = sched_clock();

	complete(&tm->tsens_rslt_completion);

	/* Mask critical interrupt */

	mb();