fix up tahvo-usb to use threaded irqs and the
new IRQ chip.
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
---
drivers/cbus/tahvo-usb.c | 35 +++++++++++++----------------------
1 files changed, 13 insertions(+), 22 deletions(-)
diff --git a/drivers/cbus/tahvo-usb.c b/drivers/cbus/tahvo-usb.c
index be0333f..10619a8 100644
--- a/drivers/cbus/tahvo-usb.c
+++ b/drivers/cbus/tahvo-usb.c
@@ -93,12 +93,13 @@ struct tahvo_usb {
struct platform_device *pt_dev;
struct otg_transceiver otg;
int vbus_state;
- struct work_struct irq_work;
struct mutex serialize;
#ifdef CONFIG_USB_OTG
int tahvo_mode;
#endif
struct clk *ick;
+
+ int irq;
};
static struct tahvo_usb *tahvo_usb_device;
@@ -523,23 +524,13 @@ static int tahvo_usb_set_peripheral(struct otg_transceiver *otg, struct usb_gadg
return 0;
}
-static void tahvo_usb_irq_work(struct work_struct *work)
+static irqreturn_t tahvo_usb_vbus_interrupt(int irq, void *_tu)
{
- struct tahvo_usb *tu = container_of(work, struct tahvo_usb, irq_work);
+ struct tahvo_usb *tu = _tu;
- mutex_lock(&tu->serialize);
check_vbus_state(tu);
- mutex_unlock(&tu->serialize);
-}
-static void tahvo_usb_vbus_interrupt(unsigned long arg)
-{
- struct tahvo_usb *tu = (struct tahvo_usb *) arg;
-
- tahvo_ack_irq(TAHVO_INT_VBUSON);
- /* Seems we need this to acknowledge the interrupt */
- tahvo_read_reg(TAHVO_REG_IDSR);
- schedule_work(&tu->irq_work);
+ return IRQ_HANDLED;
}
#ifdef CONFIG_USB_OTG
@@ -602,6 +593,7 @@ static int __init tahvo_usb_probe(struct platform_device *pdev)
struct tahvo_usb *tu;
struct device *dev = &pdev->dev;
int ret;
+ int irq;
ret = tahvo_get_status();
if (!ret)
@@ -625,7 +617,6 @@ static int __init tahvo_usb_probe(struct platform_device *pdev)
#endif
#endif
- INIT_WORK(&tu->irq_work, tahvo_usb_irq_work);
mutex_init(&tu->serialize);
tu->ick = clk_get(NULL, "usb_l4_ick");
@@ -640,9 +631,12 @@ static int __init tahvo_usb_probe(struct platform_device *pdev)
* state changes */
tu->vbus_state = tahvo_read_reg(TAHVO_REG_IDSR) & 0x01;
+ irq = platform_get_irq(pdev, 0);
+ tu->irq = irq;
+
/* We cannot enable interrupt until omap_udc is initialized */
- ret = tahvo_request_irq(TAHVO_INT_VBUSON, tahvo_usb_vbus_interrupt,
- (unsigned long) tu, "vbus_interrupt");
+ ret = request_threaded_irq(irq, NULL, tahvo_usb_vbus_interrupt,
+ IRQF_ONESHOT, "tahvo-vbus", tu);
if (ret != 0) {
printk(KERN_ERR "Could not register Tahvo interrupt for VBUS\n");
goto err_release_clk;
@@ -675,13 +669,10 @@ static int __init tahvo_usb_probe(struct platform_device *pdev)
dev_set_drvdata(dev, tu);
- /* Act upon current vbus state once at startup. A vbus state irq may or
- * may not be generated in addition to this. */
- schedule_work(&tu->irq_work);
return 0;
err_free_irq:
- tahvo_free_irq(TAHVO_INT_VBUSON);
+ free_irq(tu->irq, tu);
err_release_clk:
clk_disable(tu->ick);
clk_put(tu->ick);
@@ -698,7 +689,7 @@ static int __exit tahvo_usb_remove(struct platform_device *pdev)
dev_dbg(&pdev->dev, "remove\n");
- tahvo_free_irq(TAHVO_INT_VBUSON);
+ free_irq(tu->irq, tu);
flush_scheduled_work();
otg_set_transceiver(0);
device_remove_file(&pdev->dev, &dev_attr_vbus_state);
--
1.7.6.396.ge0613
--
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