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qcom: qpnp-smb2: Reset switcher_power_ok irq count when USBIN_UV fires

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Currently when 3 switcher_power_ok interrupts are seen within a
second, the driver thinks that the switcher is reverse boosting
and suspends USB input path.

However, switcher_power_ok could happen 3 times within a second
while AICL is run from a charger collapse, a valid usecase which
ends up in an USB suspended state.

Note that AICL run caused switcher_power_ok is accompanied by an
USBIN_UV interrupt. Use that to distinguish reverse boost Vs AICL
runs. In particular, reset the switcher_power_ok interrupt count
updated by storm_watch when an USBIN_UV interrupt is seen.

Change-Id: I6817c66319f9af03ac28324a8d863876fdadafb3
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
This commit is contained in:
Subbaraman Narayanamurthy 2017-02-06 16:33:12 -08:00
parent 2b9d6a362f
commit 6f4dec2b0c
3 changed files with 17 additions and 1 deletions
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2
drivers/power/supply/qcom/qpnp-smb2.c
View file

@ -1738,7 +1738,7 @@ static struct smb_irq_info smb2_irqs[] = {
}, },
[USBIN_UV_IRQ] = { [USBIN_UV_IRQ] = {
.name = "usbin-uv", .name = "usbin-uv",
.handler = smblib_handle_debug, .handler = smblib_handle_usbin_uv,
}, },
[USBIN_OV_IRQ] = { [USBIN_OV_IRQ] = {
.name = "usbin-ov", .name = "usbin-ov",

15
drivers/power/supply/qcom/smb-lib.c
View file

@ -2806,6 +2806,21 @@ irqreturn_t smblib_handle_usb_psy_changed(int irq, void *data)
return IRQ_HANDLED; return IRQ_HANDLED;
} }
irqreturn_t smblib_handle_usbin_uv(int irq, void *data)
{
struct smb_irq_data *irq_data = data;
struct smb_charger *chg = irq_data->parent_data;
struct storm_watch *wdata;
smblib_dbg(chg, PR_INTERRUPT, "IRQ: %s\n", irq_data->name);
if (!chg->irq_info[SWITCH_POWER_OK_IRQ].irq_data)
return IRQ_HANDLED;
wdata = &chg->irq_info[SWITCH_POWER_OK_IRQ].irq_data->storm_data;
reset_storm_count(wdata);
return IRQ_HANDLED;
}
irqreturn_t smblib_handle_usb_plugin(int irq, void *data) irqreturn_t smblib_handle_usb_plugin(int irq, void *data)
{ {
struct smb_irq_data *irq_data = data; struct smb_irq_data *irq_data = data;

1
drivers/power/supply/qcom/smb-lib.h
View file

@ -354,6 +354,7 @@ irqreturn_t smblib_handle_step_chg_soc_update_request(int irq, void *data);
irqreturn_t smblib_handle_batt_temp_changed(int irq, void *data); irqreturn_t smblib_handle_batt_temp_changed(int irq, void *data);
irqreturn_t smblib_handle_batt_psy_changed(int irq, void *data); irqreturn_t smblib_handle_batt_psy_changed(int irq, void *data);
irqreturn_t smblib_handle_usb_psy_changed(int irq, void *data); irqreturn_t smblib_handle_usb_psy_changed(int irq, void *data);
irqreturn_t smblib_handle_usbin_uv(int irq, void *data);
irqreturn_t smblib_handle_usb_plugin(int irq, void *data); irqreturn_t smblib_handle_usb_plugin(int irq, void *data);
irqreturn_t smblib_handle_usb_source_change(int irq, void *data); irqreturn_t smblib_handle_usb_source_change(int irq, void *data);
irqreturn_t smblib_handle_icl_change(int irq, void *data); irqreturn_t smblib_handle_icl_change(int irq, void *data);