summaryrefslogtreecommitdiff
path: root/drivers/gpio/gpio-vf610.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpio/gpio-vf610.c')
-rw-r--r--drivers/gpio/gpio-vf610.c95
1 files changed, 24 insertions, 71 deletions
diff --git a/drivers/gpio/gpio-vf610.c b/drivers/gpio/gpio-vf610.c
index 07e5e6323e86..7de0d5b53d56 100644
--- a/drivers/gpio/gpio-vf610.c
+++ b/drivers/gpio/gpio-vf610.c
@@ -15,10 +15,9 @@
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/irq.h>
-#include <linux/platform_device.h>
-#include <linux/of.h>
-#include <linux/of_irq.h>
#include <linux/pinctrl/consumer.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
#define VF610_GPIO_PER_PORT 32
@@ -94,63 +93,6 @@ static inline u32 vf610_gpio_readl(void __iomem *reg)
return readl_relaxed(reg);
}
-static int vf610_gpio_get(struct gpio_chip *gc, unsigned int gpio)
-{
- struct vf610_gpio_port *port = gpiochip_get_data(gc);
- unsigned long mask = BIT(gpio);
- unsigned long offset = GPIO_PDIR;
-
- if (port->sdata->have_paddr) {
- mask &= vf610_gpio_readl(port->gpio_base + GPIO_PDDR);
- if (mask)
- offset = GPIO_PDOR;
- }
-
- return !!(vf610_gpio_readl(port->gpio_base + offset) & BIT(gpio));
-}
-
-static void vf610_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
-{
- struct vf610_gpio_port *port = gpiochip_get_data(gc);
- unsigned long mask = BIT(gpio);
- unsigned long offset = val ? GPIO_PSOR : GPIO_PCOR;
-
- vf610_gpio_writel(mask, port->gpio_base + offset);
-}
-
-static int vf610_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
-{
- struct vf610_gpio_port *port = gpiochip_get_data(chip);
- unsigned long mask = BIT(gpio);
- u32 val;
-
- if (port->sdata->have_paddr) {
- val = vf610_gpio_readl(port->gpio_base + GPIO_PDDR);
- val &= ~mask;
- vf610_gpio_writel(val, port->gpio_base + GPIO_PDDR);
- }
-
- return pinctrl_gpio_direction_input(chip, gpio);
-}
-
-static int vf610_gpio_direction_output(struct gpio_chip *chip, unsigned gpio,
- int value)
-{
- struct vf610_gpio_port *port = gpiochip_get_data(chip);
- unsigned long mask = BIT(gpio);
- u32 val;
-
- vf610_gpio_set(chip, gpio, value);
-
- if (port->sdata->have_paddr) {
- val = vf610_gpio_readl(port->gpio_base + GPIO_PDDR);
- val |= mask;
- vf610_gpio_writel(val, port->gpio_base + GPIO_PDDR);
- }
-
- return pinctrl_gpio_direction_output(chip, gpio);
-}
-
static void vf610_gpio_irq_handler(struct irq_desc *desc)
{
struct vf610_gpio_port *port =
@@ -276,6 +218,7 @@ static int vf610_gpio_probe(struct platform_device *pdev)
struct vf610_gpio_port *port;
struct gpio_chip *gc;
struct gpio_irq_chip *girq;
+ unsigned long flags;
int i;
int ret;
bool dual_base;
@@ -284,7 +227,7 @@ static int vf610_gpio_probe(struct platform_device *pdev)
if (!port)
return -ENOMEM;
- port->sdata = of_device_get_match_data(dev);
+ port->sdata = device_get_match_data(dev);
dual_base = port->sdata->have_dual_base;
@@ -351,18 +294,26 @@ static int vf610_gpio_probe(struct platform_device *pdev)
}
gc = &port->gc;
- gc->parent = dev;
+ flags = BGPIOF_PINCTRL_BACKEND;
+ /*
+ * We only read the output register for current value on output
+ * lines if the direction register is available so we can switch
+ * direction.
+ */
+ if (port->sdata->have_paddr)
+ flags |= BGPIOF_READ_OUTPUT_REG_SET;
+ ret = bgpio_init(gc, dev, 4,
+ port->gpio_base + GPIO_PDIR,
+ port->gpio_base + GPIO_PDOR,
+ NULL,
+ port->sdata->have_paddr ? port->gpio_base + GPIO_PDDR : NULL,
+ NULL,
+ flags);
+ if (ret)
+ return dev_err_probe(dev, ret, "unable to init generic GPIO\n");
gc->label = dev_name(dev);
- gc->ngpio = VF610_GPIO_PER_PORT;
gc->base = -1;
- gc->request = gpiochip_generic_request;
- gc->free = gpiochip_generic_free;
- gc->direction_input = vf610_gpio_direction_input;
- gc->get = vf610_gpio_get;
- gc->direction_output = vf610_gpio_direction_output;
- gc->set = vf610_gpio_set;
-
/* Mask all GPIO interrupts */
for (i = 0; i < gc->ngpio; i++)
vf610_gpio_writel(0, port->base + PORT_PCR(i));
@@ -394,4 +345,6 @@ static struct platform_driver vf610_gpio_driver = {
.probe = vf610_gpio_probe,
};
-builtin_platform_driver(vf610_gpio_driver);
+module_platform_driver(vf610_gpio_driver);
+MODULE_DESCRIPTION("VF610 GPIO driver");
+MODULE_LICENSE("GPL");