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power: qpnp-smbcharger-mmi: Fix Dual SOC Report

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The Dual battery design could lead to a filaure where it drops
the SOC to a value of 0.  This happens on error but also the
math could have been wrong.  Only allow a change in SOC if it
is within +/-2% of the current reported SOC.

Also still only update if it changes and bound check 0 and 100
as min and max.

Change-Id: Ie049f9edcf62371b75f1e6def29b1742a9798a88
Signed-off-by: Kenny Kessler <kenny.kessler@motorola.com>
Reviewed-on: https://gerrit.mot.com/1258474
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Ryan Lattrel <ryanl@motorola.com>
Reviewed-by: Kenneth Kessler <kennykessler@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
Kenny Kessler 2018-10-19 15:53:10 -05:00 • committed by Kenneth Kessler
commit 5bbd7c61d0
1 changed files with 6 additions and 1 deletions
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7
drivers/power/qpnp-smbcharger-mmi/qpnp-smbcharger-mmi.c
View file

@ -2033,6 +2033,7 @@ static int factory_kill_disable;
module_param(factory_kill_disable, int, 0644);
#define TWO_VOLT 2000000
#define SMBCHG_HEARTBEAT_INTERVAL_NS 70000000000
#define MONOTONIC_SOC 2 /* 2 percent */
static void mmi_heartbeat_work(struct work_struct *work)
{
struct smb_mmi_charger *chip = container_of(work,
@ -2165,7 +2166,11 @@ static void mmi_heartbeat_work(struct work_struct *work)
else
batt_cap = pval.intval;
if (batt_cap != report_cap) {
if ((report_cap != batt_cap) &&
(report_cap <= (batt_cap + MONOTONIC_SOC)) &&
(report_cap >= (batt_cap - MONOTONIC_SOC)) &&
!(report_cap < 0) &&
!(report_cap > 100)) {
pr_info("SMBMMI: Updating Reported Capacity to %d\n",
report_cap);
pval.intval = report_cap;