palmas-usb is made as a comparator driver to omap usb2 phy, so that
omap usb can make use of palmas for srp and also to set vbus.
Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx>
---
drivers/usb/otg/palmas-usb.c | 20 ++++++++++++++++++--
include/linux/mfd/palmas.h | 3 +++
2 files changed, 21 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/otg/palmas-usb.c b/drivers/usb/otg/palmas-usb.c
index 8389ad6..76240ef 100644
--- a/drivers/usb/otg/palmas-usb.c
+++ b/drivers/usb/otg/palmas-usb.c
@@ -31,6 +31,8 @@
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/usb/otg.h>
+#include <linux/usb/phy_companion.h>
+#include <linux/usb/omap_usb.h>
#include <linux/regulator/consumer.h>
#include <linux/err.h>
#include <linux/notifier.h>
@@ -208,16 +210,20 @@ static void palmas_set_vbus_work(struct work_struct *data)
regulator_disable(palmas_usb->vbus_reg);
}
-static int palmas_set_vbus(struct palmas_usb *palmas_usb, bool enabled)
+static int palmas_set_vbus(struct phy_companion *comparator, bool enabled)
{
+ struct palmas_usb *palmas_usb = comparator_to_palmas(comparator);
+
palmas_usb->vbus_enable = enabled;
schedule_work(&palmas_usb->set_vbus_work);
return 0;
}
-static int palmas_start_srp(struct palmas_usb *palmas_usb)
+static int palmas_start_srp(struct phy_companion *comparator)
{
+ struct palmas_usb *palmas_usb = comparator_to_palmas(comparator);
+
palmas_usb_write(palmas_usb->palmas, PALMAS_USB_VBUS_CTRL_SET,
PALMAS_USB_VBUS_CTRL_SET_VBUS_DISCHRG |
PALMAS_USB_VBUS_CTRL_SET_VBUS_IADP_SINK);
@@ -253,6 +259,7 @@ static void palmas_dt_to_pdata(struct device_node *node,
static int palmas_usb_probe(struct platform_device *pdev)
{
+ u32 ret;
struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
struct palmas_usb_platform_data *pdata = pdev->dev.platform_data;
struct device_node *node = pdev->dev.of_node;
@@ -289,6 +296,15 @@ static int palmas_usb_probe(struct platform_device *pdev)
palmas_usb->irq4 = regmap_irq_get_virq(palmas->irq_data,
PALMAS_VBUS_IRQ);
+ palmas_usb->comparator.set_vbus = palmas_set_vbus;
+ palmas_usb->comparator.start_srp = palmas_start_srp;
+
+ ret = omap_usb2_set_comparator(&palmas_usb->comparator);
+ if (ret == -ENODEV) {
+ dev_info(&pdev->dev, "phy not ready, deferring probe");
+ return -EPROBE_DEFER;
+ }
+
palmas_usb_wakeup(palmas, pdata->wakeup);
/* init spinlock for workqueue */
diff --git a/include/linux/mfd/palmas.h b/include/linux/mfd/palmas.h
index 82932db..a557db6 100644
--- a/include/linux/mfd/palmas.h
+++ b/include/linux/mfd/palmas.h
@@ -19,6 +19,7 @@
#include <linux/leds.h>
#include <linux/regmap.h>
#include <linux/regulator/driver.h>
+#include <linux/usb/phy_companion.h>
#define PALMAS_NUM_CLIENTS 3
@@ -343,6 +344,8 @@ struct palmas_usb {
struct palmas *palmas;
struct device *dev;
+ struct phy_companion comparator;
+
/* for vbus reporting with irqs disabled */
spinlock_t lock;
--
1.7.9.5
--
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