Staging: emxx_udc: Switch to the gpio descriptor interface

Convert VBUS GPIO to use GPIO descriptors from <linux/gpio/consumer.h>
and stop using the old GPIO API.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c
index 8e8f57c..a913d40 100644 (file)
--- a/drivers/staging/emxx_udc/emxx_udc.c
+++ b/drivers/staging/emxx_udc/emxx_udc.c
@@ -27,7 +27,7 @@
 #include <linux/usb/gadget.h>
 
 #include <linux/irq.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 
 #include "emxx_udc.h"
 
@@ -2220,7 +2220,7 @@ static inline void _nbu2ss_check_vbus(struct nbu2ss_udc *udc)
        mdelay(VBUS_CHATTERING_MDELAY);         /* wait (ms) */
 
        /* VBUS ON Check*/
-       reg_dt = gpio_get_value(VBUS_VALUE);
+       reg_dt = gpiod_get_value(vbus_gpio);
        if (reg_dt == 0) {
                udc->linux_suspended = 0;
 
@@ -2247,7 +2247,7 @@ static inline void _nbu2ss_check_vbus(struct nbu2ss_udc *udc)
                }
        } else {
                mdelay(5);              /* wait (5ms) */
-               reg_dt = gpio_get_value(VBUS_VALUE);
+               reg_dt = gpiod_get_value(vbus_gpio);
                if (reg_dt == 0)
                        return;
 
@@ -2311,7 +2311,7 @@ static inline void _nbu2ss_int_usb_suspend(struct nbu2ss_udc *udc)
        u32     reg_dt;
 
        if (udc->usb_suspended == 0) {
-               reg_dt = gpio_get_value(VBUS_VALUE);
+               reg_dt = gpiod_get_value(vbus_gpio);
 
                if (reg_dt == 0)
                        return;
@@ -2351,7 +2351,7 @@ static irqreturn_t _nbu2ss_udc_irq(int irq, void *_udc)
        struct nbu2ss_udc       *udc = (struct nbu2ss_udc *)_udc;
        struct fc_regs __iomem *preg = udc->p_regs;
 
-       if (gpio_get_value(VBUS_VALUE) == 0) {
+       if (gpiod_get_value(vbus_gpio) == 0) {
                _nbu2ss_writel(&preg->USB_INT_STA, ~USB_INT_STA_RW);
                _nbu2ss_writel(&preg->USB_INT_ENA, 0);
                return IRQ_HANDLED;
@@ -2360,7 +2360,7 @@ static irqreturn_t _nbu2ss_udc_irq(int irq, void *_udc)
        spin_lock(&udc->lock);
 
        for (;;) {
-               if (gpio_get_value(VBUS_VALUE) == 0) {
+               if (gpiod_get_value(vbus_gpio) == 0) {
                        _nbu2ss_writel(&preg->USB_INT_STA, ~USB_INT_STA_RW);
                        _nbu2ss_writel(&preg->USB_INT_ENA, 0);
                        status = 0;
@@ -2750,7 +2750,7 @@ static int nbu2ss_ep_fifo_status(struct usb_ep *_ep)
 
        preg = udc->p_regs;
 
-       data = gpio_get_value(VBUS_VALUE);
+       data = gpiod_get_value(vbus_gpio);
        if (data == 0)
                return -EINVAL;
 
@@ -2790,7 +2790,7 @@ static void  nbu2ss_ep_fifo_flush(struct usb_ep *_ep)
                return;
        }
 
-       data = gpio_get_value(VBUS_VALUE);
+       data = gpiod_get_value(vbus_gpio);
        if (data == 0)
                return;
 
@@ -2832,7 +2832,7 @@ static int nbu2ss_gad_get_frame(struct usb_gadget *pgadget)
        }
 
        udc = container_of(pgadget, struct nbu2ss_udc, gadget);
-       data = gpio_get_value(VBUS_VALUE);
+       data = gpiod_get_value(vbus_gpio);
        if (data == 0)
                return -EINVAL;
 
@@ -2854,7 +2854,7 @@ static int nbu2ss_gad_wakeup(struct usb_gadget *pgadget)
 
        udc = container_of(pgadget, struct nbu2ss_udc, gadget);
 
-       data = gpio_get_value(VBUS_VALUE);
+       data = gpiod_get_value(vbus_gpio);
        if (data == 0) {
                dev_warn(&pgadget->dev, "VBUS LEVEL = %d\n", data);
                return -EINVAL;
@@ -3119,12 +3119,13 @@ static int nbu2ss_drv_probe(struct platform_device *pdev)
        }
 
        /* VBUS Interrupt */
-       irq_set_irq_type(INT_VBUS, IRQ_TYPE_EDGE_BOTH);
-       status = request_irq(INT_VBUS,
+       vbus_irq = gpiod_to_irq(vbus_gpio);
+       irq_set_irq_type(vbus_irq, IRQ_TYPE_EDGE_BOTH);
+       status = request_irq(vbus_irq,
                             _nbu2ss_vbus_irq, IRQF_SHARED, driver_name, udc);
 
        if (status != 0) {
-               dev_err(udc->dev, "request_irq(INT_VBUS) failed\n");
+               dev_err(udc->dev, "request_irq(vbus_irq) failed\n");
                return status;
        }
 
@@ -3160,7 +3161,7 @@ static int nbu2ss_drv_remove(struct platform_device *pdev)
        }
 
        /* Interrupt Handler - Release */
-       free_irq(INT_VBUS, udc);
+       free_irq(vbus_irq, udc);
 
        return 0;
 }
@@ -3201,7 +3202,7 @@ static int nbu2ss_drv_resume(struct platform_device *pdev)
        if (!udc)
                return 0;
 
-       data = gpio_get_value(VBUS_VALUE);
+       data = gpiod_get_value(vbus_gpio);
        if (data) {
                udc->vbus_active = 1;
                udc->devstate = USB_STATE_POWERED;

diff --git a/drivers/staging/emxx_udc/emxx_udc.h b/drivers/staging/emxx_udc/emxx_udc.h
index e28a74d..b8c3dee 100644 (file)
--- a/drivers/staging/emxx_udc/emxx_udc.h
+++ b/drivers/staging/emxx_udc/emxx_udc.h
@@ -30,6 +30,8 @@
 /* below hacked up for staging integration */
 #define GPIO_VBUS 0 /* GPIO_P153 on KZM9D */
 #define INT_VBUS 0 /* IRQ for GPIO_P153 */
+struct gpio_desc *vbus_gpio;
+int vbus_irq;
 
 /*------------ Board dependence(Wait) */