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Groups > linux.kernel > #1478640
| From | Stephen Boyd <stephen.boyd@linaro.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v4 05/22] usb: chipidea: Handle extcon events properly |
| Date | 2016-09-07 23:50 +0200 |
| Message-ID | <seSTf-5pg-13@gated-at.bofh.it> (permalink) |
| References | <seSJz-5m0-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
We're currently emulating the vbus and id interrupts in the OTGSC
read API, but we also need to make sure that if we're handling
the events with extcon that we don't enable the interrupts for
those events in the hardware. Therefore, properly emulate this
register if we're using extcon, but don't enable the interrupts.
This allows me to get my cable connect/disconnect working
properly without getting spurious interrupts on my device that
uses an extcon for these two events.
Acked-by: Peter Chen <peter.chen@nxp.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Ivan T. Ivanov" <iivanov.xz@gmail.com>
Fixes: 3ecb3e09b042 ("usb: chipidea: Use extcon framework for VBUS and ID detect")
Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
---
drivers/usb/chipidea/otg.c | 46 +++++++++++++++++++++++++++++++++++++++-----
include/linux/usb/chipidea.h | 2 ++
2 files changed, 43 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/chipidea/otg.c b/drivers/usb/chipidea/otg.c
index a829607c3e4d..0cf149edddd8 100644
--- a/drivers/usb/chipidea/otg.c
+++ b/drivers/usb/chipidea/otg.c
@@ -44,12 +44,15 @@ u32 hw_read_otgsc(struct ci_hdrc *ci, u32 mask)
else
val &= ~OTGSC_BSVIS;
- cable->changed = false;
-
if (cable->state)
val |= OTGSC_BSV;
else
val &= ~OTGSC_BSV;
+
+ if (cable->enabled)
+ val |= OTGSC_BSVIE;
+ else
+ val &= ~OTGSC_BSVIE;
}
cable = &ci->platdata->id_extcon;
@@ -59,15 +62,18 @@ u32 hw_read_otgsc(struct ci_hdrc *ci, u32 mask)
else
val &= ~OTGSC_IDIS;
- cable->changed = false;
-
if (cable->state)
val |= OTGSC_ID;
else
val &= ~OTGSC_ID;
+
+ if (cable->enabled)
+ val |= OTGSC_IDIE;
+ else
+ val &= ~OTGSC_IDIE;
}
- return val;
+ return val & mask;
}
/**
@@ -77,6 +83,36 @@ u32 hw_read_otgsc(struct ci_hdrc *ci, u32 mask)
*/
void hw_write_otgsc(struct ci_hdrc *ci, u32 mask, u32 data)
{
+ struct ci_hdrc_cable *cable;
+
+ cable = &ci->platdata->vbus_extcon;
+ if (!IS_ERR(cable->edev)) {
+ if (data & mask & OTGSC_BSVIS)
+ cable->changed = false;
+
+ /* Don't enable vbus interrupt if using external notifier */
+ if (data & mask & OTGSC_BSVIE) {
+ cable->enabled = true;
+ data &= ~OTGSC_BSVIE;
+ } else if (mask & OTGSC_BSVIE) {
+ cable->enabled = false;
+ }
+ }
+
+ cable = &ci->platdata->id_extcon;
+ if (!IS_ERR(cable->edev)) {
+ if (data & mask & OTGSC_IDIS)
+ cable->changed = false;
+
+ /* Don't enable id interrupt if using external notifier */
+ if (data & mask & OTGSC_IDIE) {
+ cable->enabled = true;
+ data &= ~OTGSC_IDIE;
+ } else if (mask & OTGSC_IDIE) {
+ cable->enabled = false;
+ }
+ }
+
hw_write(ci, OP_OTGSC, mask | OTGSC_INT_STATUS_BITS, data);
}
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index 5dd75fa47dd8..f9be467d6695 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -14,6 +14,7 @@ struct ci_hdrc;
* struct ci_hdrc_cable - structure for external connector cable state tracking
* @state: current state of the line
* @changed: set to true when extcon event happen
+ * @enabled: set to true if we've enabled the vbus or id interrupt
* @edev: device which generate events
* @ci: driver state of the chipidea device
* @nb: hold event notification callback
@@ -22,6 +23,7 @@ struct ci_hdrc;
struct ci_hdrc_cable {
bool state;
bool changed;
+ bool enabled;
struct extcon_dev *edev;
struct ci_hdrc *ci;
struct notifier_block nb;
--
2.9.0.rc2.8.ga28705d
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[PATCH v4 00/22] Support qcom's HSIC USB and rewrite USB2 HS support Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-07 23:40 +0200
[PATCH v4 14/22] usb: chipidea: msm: Add proper clk and reset support Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-07 23:40 +0200
[PATCH v4 07/22] usb: chipidea: Notify events when switching host mode Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-07 23:40 +0200
[PATCH v4 22/22] phy: Add support for Qualcomm's USB HS phy Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-07 23:40 +0200
[PATCH v4 16/22] usb: chipidea: msm: Restore wrapper settings after reset Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-07 23:40 +0200
[PATCH v4 05/22] usb: chipidea: Handle extcon events properly Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-07 23:50 +0200
[PATCH v4 09/22] usb: chipidea: Add support for ULPI PHY bus Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-07 23:50 +0200
[PATCH v4 03/22] usb: ulpi: Support device discovery via DT Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-07 23:50 +0200
Re: [PATCH v4 03/22] usb: ulpi: Support device discovery via DT Rob Herring <robh+dt@kernel.org> - 2016-09-08 03:20 +0200
[PATCH v4 04/22] usb: chipidea: Only read/write OTGSC from one place Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-07 23:50 +0200
[PATCH v4 02/22] of: device: Export of_device_{get_modalias,uvent_modalias} to modules Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-07 23:50 +0200
Re: [PATCH v4 02/22] of: device: Export of_device_{get_modalias,uvent_modalias} to modules Rob Herring <robh+dt@kernel.org> - 2016-09-08 03:00 +0200
Re: [PATCH v4 00/22] Support qcom's HSIC USB and rewrite USB2 HS support Peter Chen <hzpeterchen@gmail.com> - 2016-09-08 04:10 +0200
Re: [PATCH v4 00/22] Support qcom's HSIC USB and rewrite USB2 HS support Peter Chen <hzpeterchen@gmail.com> - 2016-09-09 02:50 +0200
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