From: Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Bin Liu <b-liu-l0cyMroinI0@public.gmane.org>,
Greg Kroah-Hartman
<gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>,
Kishon Vijay Abraham I <kishon-l0cyMroinI0@public.gmane.org>
Cc: Maxime Ripard
<maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>,
linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
devicetree <devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: [PATCH v4 3/4] phy-sun4i-usb: Add workaround for missing Vbus det interrupts on A31
Date: Fri, 10 Jun 2016 21:02:53 +0200 [thread overview]
Message-ID: <1465585374-10213-4-git-send-email-hdegoede@redhat.com> (raw)
In-Reply-To: <1465585374-10213-1-git-send-email-hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
The A31 companion pmic (axp221) does not generate vbus change interrupts
when the board is driving vbus, so we must poll when using the pmic for
vbus-det _and_ we're driving vbus.
Signed-off-by: Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
---
Changes in v2:
-No changes
Changes in v3:
-No changes
Changes in v4:
-No changes
---
drivers/phy/phy-sun4i-usb.c | 34 ++++++++++++++++++++++++----------
1 file changed, 24 insertions(+), 10 deletions(-)
diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c
index e3cbaae..a7abae6 100644
--- a/drivers/phy/phy-sun4i-usb.c
+++ b/drivers/phy/phy-sun4i-usb.c
@@ -95,6 +95,7 @@
enum sun4i_usb_phy_type {
sun4i_a10_phy,
+ sun6i_a31_phy,
sun8i_a33_phy,
sun8i_h3_phy,
};
@@ -125,7 +126,6 @@ struct sun4i_usb_phy_data {
/* phy0 / otg related variables */
struct extcon_dev *extcon;
bool phy0_init;
- bool phy0_poll;
struct gpio_desc *id_det_gpio;
struct gpio_desc *vbus_det_gpio;
struct power_supply *vbus_power_supply;
@@ -353,6 +353,24 @@ static bool sun4i_usb_phy0_have_vbus_det(struct sun4i_usb_phy_data *data)
return data->vbus_det_gpio || data->vbus_power_supply;
}
+static bool sun4i_usb_phy0_poll(struct sun4i_usb_phy_data *data)
+{
+ if ((data->id_det_gpio && data->id_det_irq < 0) ||
+ (data->vbus_det_gpio && data->vbus_det_irq < 0))
+ return true;
+
+ /*
+ * The A31 companion pmic (axp221) does not generate vbus change
+ * interrupts when the board is driving vbus, so we must poll
+ * when using the pmic for vbus-det _and_ we're driving vbus.
+ */
+ if (data->cfg->type == sun6i_a31_phy &&
+ data->vbus_power_supply && data->phys[0].regulator_on)
+ return true;
+
+ return false;
+}
+
static int sun4i_usb_phy_power_on(struct phy *_phy)
{
struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
@@ -374,7 +392,7 @@ static int sun4i_usb_phy_power_on(struct phy *_phy)
phy->regulator_on = true;
/* We must report Vbus high within OTG_TIME_A_WAIT_VRISE msec. */
- if (phy->index == 0 && data->vbus_det_gpio && data->phy0_poll)
+ if (phy->index == 0 && sun4i_usb_phy0_poll(data))
mod_delayed_work(system_wq, &data->detect, DEBOUNCE_TIME);
return 0;
@@ -395,7 +413,7 @@ static int sun4i_usb_phy_power_off(struct phy *_phy)
* phy0 vbus typically slowly discharges, sometimes this causes the
* Vbus gpio to not trigger an edge irq on Vbus off, so force a rescan.
*/
- if (phy->index == 0 && data->vbus_det_gpio && !data->phy0_poll)
+ if (phy->index == 0 && !sun4i_usb_phy0_poll(data))
mod_delayed_work(system_wq, &data->detect, POLL_TIME);
return 0;
@@ -483,7 +501,7 @@ static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work)
if (vbus_notify)
extcon_set_cable_state_(data->extcon, EXTCON_USB, vbus_det);
- if (data->phy0_poll)
+ if (sun4i_usb_phy0_poll(data))
queue_delayed_work(system_wq, &data->detect, POLL_TIME);
}
@@ -668,11 +686,6 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
}
data->id_det_irq = gpiod_to_irq(data->id_det_gpio);
- data->vbus_det_irq = gpiod_to_irq(data->vbus_det_gpio);
- if ((data->id_det_gpio && data->id_det_irq < 0) ||
- (data->vbus_det_gpio && data->vbus_det_irq < 0))
- data->phy0_poll = true;
next prev parent reply other threads:[~2016-06-10 19:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-10 19:02 [PATCH v4 0/4] usb: musb: sunxi: Fixes + peripheral-only mode Hans de Goede
[not found] ` <1465585374-10213-1-git-send-email-hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-06-10 19:02 ` [PATCH v4 1/4] USB: Fix of_usb_get_dr_mode_by_phy with a shared phy block Hans de Goede
2016-06-10 19:02 ` [PATCH v4 2/4] phy-sun4i-usb: Add support for peripheral-only mode Hans de Goede
2016-06-10 19:02 ` Hans de Goede [this message]
2016-06-10 19:02 ` [PATCH v4 4/4] usb: musb: sunxi: Simplify dr_mode handling Hans de Goede
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