diff options
| author | Abhijeet Dharmapurikar <adharmap@codeaurora.org> | 2017-08-08 13:11:29 -0700 |
|---|---|---|
| committer | Abhijeet Dharmapurikar <adharmap@codeaurora.org> | 2017-08-24 09:54:45 -0700 |
| commit | 5c1894c01df4cdb853d2ef3a0b1edc7bbb32020b (patch) | |
| tree | fe416f099c1653b8ca99e7f7bf45bd0a26872a6e | |
| parent | e243bb85026ba9a88de4e860b265594da4f73706 (diff) | |
qpnp-qnovo: check ptrain_en in restart work
Sometimes we observe that the ptrain_en bit is reset back to 0 while
in restart work.
Set it again if so.
Change-Id: I15d46f96a8b751f0386677e3b6876eec8bba9a1f
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
| -rw-r--r-- | drivers/power/supply/qcom/qpnp-qnovo.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/power/supply/qcom/qpnp-qnovo.c b/drivers/power/supply/qcom/qpnp-qnovo.c index b20807990efc..98bb939f47ac 100644 --- a/drivers/power/supply/qcom/qpnp-qnovo.c +++ b/drivers/power/supply/qcom/qpnp-qnovo.c @@ -1333,6 +1333,26 @@ static void ptrain_restart_work(struct work_struct *work) struct qnovo, ptrain_restart_work.work); u8 pt_t1, pt_t2; int rc; + u8 pt_en; + + rc = qnovo_read(chip, QNOVO_PTRAIN_EN, &pt_en, 1); + if (rc < 0) { + dev_err(chip->dev, "Couldn't read QNOVO_PTRAIN_EN rc = %d\n", + rc); + goto clean_up; + } + + if (!pt_en) { + rc = qnovo_masked_write(chip, QNOVO_PTRAIN_EN, + QNOVO_PTRAIN_EN_BIT, QNOVO_PTRAIN_EN_BIT); + if (rc < 0) { + dev_err(chip->dev, "Couldn't enable pulse train rc=%d\n", + rc); + goto clean_up; + } + /* sleep 20ms for the pulse trains to restart and settle */ + msleep(20); + } rc = qnovo_read(chip, QNOVO_PTTIME_STS, &pt_t1, 1); if (rc < 0) { |