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thermal: tsens: Enable valid status bit check 

Check if the valid bit is set as part of reading the ADC data from the
status register. The valid bit is used to avoid possibility of reading
invalid ADC data as the controller is updating the readings.

Change-Id: I03832a1ffb6bb47525a5ab9afc28682034a50c69
Signed-off-by: Rama Krishna Phani A <rphani@codeaurora.org>
This commit is contained in:
Rama Krishna Phani A 2015-09-22 16:35:06 +05:30 committed by Gerrit - the friendly Code Review server
parent 17ea8ef017
commit f6f0714f09
1 changed files with 4 additions and 2 deletions
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6
drivers/thermal/msm-tsens.c
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@ -54,7 +54,7 @@
#define TSENS2_SN_STATUS_ADDR(n) ((n) + 0x1044)
#define TSENS2_SN_STATUS_VALID BIT(14)
#define TSENS2_SN_STATUS_VALID_MASK 0x4000
#define TSENS2_TRDY_ADDR(n) ((n) + 0x84)
#define TSENS2_TRDY_ADDR(n) ((n) + 0x1084)
#define TSENS3_TRDY_ADDR(n) ((n) + 0x1084)
@ -1399,7 +1399,7 @@ static irqreturn_t tsens_irq_thread(int irq, void *data)
int sensor_sw_id = -EINVAL, rc = 0;
uint32_t idx = 0;
if ((tmdev->tsens_type == TSENS_TYPE2) |
if ((tmdev->tsens_type == TSENS_TYPE2) ||
(tmdev->tsens_type == TSENS_TYPE3))
sensor_status_addr = TSENS2_SN_STATUS_ADDR(tmdev->tsens_addr);
else
@ -4382,6 +4382,8 @@ static int get_device_tree_data(struct platform_device *pdev)
if (!strcmp(id->compatible, "qcom,msm8994-tsens") ||
(!strcmp(id->compatible, "qcom,msm8992-tsens")) ||
(!strcmp(id->compatible, "qcom,mdm9640-tsens")) ||
(!strcmp(id->compatible, "qcom,msm8952-tsens")) ||
(!strcmp(id->compatible, "qcom,msm8976-tsens")) ||
(!strcmp(id->compatible, "qcom,mdm9640v2-tsens")))
tmdev->tsens_valid_status_check = true;
else