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Subject[PATCH] 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>
---
drivers/staging/emxx_udc/emxx_udc.c | 31 +++++++++++++++--------------
drivers/staging/emxx_udc/emxx_udc.h | 2 ++
2 files changed, 18 insertions(+), 15 deletions(-)

diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c
index 8e8f57c4f029..a913d40f0801 100644
--- 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 e28a74da9633..b8c3dee5626c 100644
--- 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) */

--
2.17.1
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