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path: root/drivers/gpio/gpio-tc3589x.c
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Diffstat (limited to 'drivers/gpio/gpio-tc3589x.c')
-rw-r--r--drivers/gpio/gpio-tc3589x.c143
1 files changed, 53 insertions, 90 deletions
diff --git a/drivers/gpio/gpio-tc3589x.c b/drivers/gpio/gpio-tc3589x.c
index 2a82e8999a4..51f7cbd9ff7 100644
--- a/drivers/gpio/gpio-tc3589x.c
+++ b/drivers/gpio/gpio-tc3589x.c
@@ -11,7 +11,7 @@
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/gpio.h>
-#include <linux/irq.h>
+#include <linux/of.h>
#include <linux/interrupt.h>
#include <linux/mfd/tc3589x.h>
@@ -29,9 +29,6 @@ struct tc3589x_gpio {
struct tc3589x *tc3589x;
struct device *dev;
struct mutex irq_lock;
-
- int irq_base;
-
/* Caches of interrupt control registers for bus_lock */
u8 regs[CACHE_NR_REGS][CACHE_NR_BANKS];
u8 oldregs[CACHE_NR_REGS][CACHE_NR_BANKS];
@@ -92,13 +89,6 @@ static int tc3589x_gpio_direction_input(struct gpio_chip *chip,
return tc3589x_set_bits(tc3589x, reg, 1 << pos, 0);
}
-static int tc3589x_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
-{
- struct tc3589x_gpio *tc3589x_gpio = to_tc3589x_gpio(chip);
-
- return tc3589x_gpio->irq_base + offset;
-}
-
static struct gpio_chip template_chip = {
.label = "tc3589x",
.owner = THIS_MODULE,
@@ -106,14 +96,14 @@ static struct gpio_chip template_chip = {
.get = tc3589x_gpio_get,
.direction_output = tc3589x_gpio_direction_output,
.set = tc3589x_gpio_set,
- .to_irq = tc3589x_gpio_to_irq,
- .can_sleep = 1,
+ .can_sleep = true,
};
static int tc3589x_gpio_irq_set_type(struct irq_data *d, unsigned int type)
{
- struct tc3589x_gpio *tc3589x_gpio = irq_data_get_irq_chip_data(d);
- int offset = d->irq - tc3589x_gpio->irq_base;
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct tc3589x_gpio *tc3589x_gpio = container_of(gc, struct tc3589x_gpio, chip);
+ int offset = d->hwirq;
int regoffset = offset / 8;
int mask = 1 << (offset % 8);
@@ -139,14 +129,16 @@ static int tc3589x_gpio_irq_set_type(struct irq_data *d, unsigned int type)
static void tc3589x_gpio_irq_lock(struct irq_data *d)
{
- struct tc3589x_gpio *tc3589x_gpio = irq_data_get_irq_chip_data(d);
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct tc3589x_gpio *tc3589x_gpio = container_of(gc, struct tc3589x_gpio, chip);
mutex_lock(&tc3589x_gpio->irq_lock);
}
static void tc3589x_gpio_irq_sync_unlock(struct irq_data *d)
{
- struct tc3589x_gpio *tc3589x_gpio = irq_data_get_irq_chip_data(d);
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct tc3589x_gpio *tc3589x_gpio = container_of(gc, struct tc3589x_gpio, chip);
struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
static const u8 regmap[] = {
[REG_IBE] = TC3589x_GPIOIBE0,
@@ -174,8 +166,9 @@ static void tc3589x_gpio_irq_sync_unlock(struct irq_data *d)
static void tc3589x_gpio_irq_mask(struct irq_data *d)
{
- struct tc3589x_gpio *tc3589x_gpio = irq_data_get_irq_chip_data(d);
- int offset = d->irq - tc3589x_gpio->irq_base;
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct tc3589x_gpio *tc3589x_gpio = container_of(gc, struct tc3589x_gpio, chip);
+ int offset = d->hwirq;
int regoffset = offset / 8;
int mask = 1 << (offset % 8);
@@ -184,8 +177,9 @@ static void tc3589x_gpio_irq_mask(struct irq_data *d)
static void tc3589x_gpio_irq_unmask(struct irq_data *d)
{
- struct tc3589x_gpio *tc3589x_gpio = irq_data_get_irq_chip_data(d);
- int offset = d->irq - tc3589x_gpio->irq_base;
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct tc3589x_gpio *tc3589x_gpio = container_of(gc, struct tc3589x_gpio, chip);
+ int offset = d->hwirq;
int regoffset = offset / 8;
int mask = 1 << (offset % 8);
@@ -222,8 +216,10 @@ static irqreturn_t tc3589x_gpio_irq(int irq, void *dev)
while (stat) {
int bit = __ffs(stat);
int line = i * 8 + bit;
+ int irq = irq_find_mapping(tc3589x_gpio->chip.irqdomain,
+ line);
- handle_nested_irq(tc3589x_gpio->irq_base + line);
+ handle_nested_irq(irq);
stat &= ~(1 << bit);
}
@@ -233,57 +229,28 @@ static irqreturn_t tc3589x_gpio_irq(int irq, void *dev)
return IRQ_HANDLED;
}
-static int tc3589x_gpio_irq_init(struct tc3589x_gpio *tc3589x_gpio)
-{
- int base = tc3589x_gpio->irq_base;
- int irq;
-
- for (irq = base; irq < base + tc3589x_gpio->chip.ngpio; irq++) {
- irq_set_chip_data(irq, tc3589x_gpio);
- irq_set_chip_and_handler(irq, &tc3589x_gpio_irq_chip,
- handle_simple_irq);
- irq_set_nested_thread(irq, 1);
-#ifdef CONFIG_ARM
- set_irq_flags(irq, IRQF_VALID);
-#else
- irq_set_noprobe(irq);
-#endif
- }
-
- return 0;
-}
-
-static void tc3589x_gpio_irq_remove(struct tc3589x_gpio *tc3589x_gpio)
-{
- int base = tc3589x_gpio->irq_base;
- int irq;
-
- for (irq = base; irq < base + tc3589x_gpio->chip.ngpio; irq++) {
-#ifdef CONFIG_ARM
- set_irq_flags(irq, 0);
-#endif
- irq_set_chip_and_handler(irq, NULL, NULL);
- irq_set_chip_data(irq, NULL);
- }
-}
-
-static int __devinit tc3589x_gpio_probe(struct platform_device *pdev)
+static int tc3589x_gpio_probe(struct platform_device *pdev)
{
struct tc3589x *tc3589x = dev_get_drvdata(pdev->dev.parent);
struct tc3589x_gpio_platform_data *pdata;
+ struct device_node *np = pdev->dev.of_node;
struct tc3589x_gpio *tc3589x_gpio;
int ret;
int irq;
pdata = tc3589x->pdata->gpio;
- if (!pdata)
- return -ENODEV;
+
+ if (!(pdata || np)) {
+ dev_err(&pdev->dev, "No platform data or Device Tree found\n");
+ return -EINVAL;
+ }
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
- tc3589x_gpio = kzalloc(sizeof(struct tc3589x_gpio), GFP_KERNEL);
+ tc3589x_gpio = devm_kzalloc(&pdev->dev, sizeof(struct tc3589x_gpio),
+ GFP_KERNEL);
if (!tc3589x_gpio)
return -ENOMEM;
@@ -295,58 +262,60 @@ static int __devinit tc3589x_gpio_probe(struct platform_device *pdev)
tc3589x_gpio->chip = template_chip;
tc3589x_gpio->chip.ngpio = tc3589x->num_gpio;
tc3589x_gpio->chip.dev = &pdev->dev;
- tc3589x_gpio->chip.base = pdata->gpio_base;
+ tc3589x_gpio->chip.base = (pdata) ? pdata->gpio_base : -1;
- tc3589x_gpio->irq_base = tc3589x->irq_base + TC3589x_INT_GPIO(0);
+#ifdef CONFIG_OF_GPIO
+ tc3589x_gpio->chip.of_node = np;
+#endif
/* Bring the GPIO module out of reset */
ret = tc3589x_set_bits(tc3589x, TC3589x_RSTCTRL,
TC3589x_RSTCTRL_GPIRST, 0);
if (ret < 0)
- goto out_free;
-
- ret = tc3589x_gpio_irq_init(tc3589x_gpio);
- if (ret)
- goto out_free;
+ return ret;
- ret = request_threaded_irq(irq, NULL, tc3589x_gpio_irq, IRQF_ONESHOT,
- "tc3589x-gpio", tc3589x_gpio);
+ ret = devm_request_threaded_irq(&pdev->dev,
+ irq, NULL, tc3589x_gpio_irq,
+ IRQF_ONESHOT, "tc3589x-gpio",
+ tc3589x_gpio);
if (ret) {
dev_err(&pdev->dev, "unable to get irq: %d\n", ret);
- goto out_removeirq;
+ return ret;
}
ret = gpiochip_add(&tc3589x_gpio->chip);
if (ret) {
dev_err(&pdev->dev, "unable to add gpiochip: %d\n", ret);
- goto out_freeirq;
+ return ret;
}
- if (pdata->setup)
+ ret = gpiochip_irqchip_add(&tc3589x_gpio->chip,
+ &tc3589x_gpio_irq_chip,
+ 0,
+ handle_simple_irq,
+ IRQ_TYPE_NONE);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "could not connect irqchip to gpiochip\n");
+ return ret;
+ }
+
+ if (pdata && pdata->setup)
pdata->setup(tc3589x, tc3589x_gpio->chip.base);
platform_set_drvdata(pdev, tc3589x_gpio);
return 0;
-
-out_freeirq:
- free_irq(irq, tc3589x_gpio);
-out_removeirq:
- tc3589x_gpio_irq_remove(tc3589x_gpio);
-out_free:
- kfree(tc3589x_gpio);
- return ret;
}
-static int __devexit tc3589x_gpio_remove(struct platform_device *pdev)
+static int tc3589x_gpio_remove(struct platform_device *pdev)
{
struct tc3589x_gpio *tc3589x_gpio = platform_get_drvdata(pdev);
struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
struct tc3589x_gpio_platform_data *pdata = tc3589x->pdata->gpio;
- int irq = platform_get_irq(pdev, 0);
int ret;
- if (pdata->remove)
+ if (pdata && pdata->remove)
pdata->remove(tc3589x, tc3589x_gpio->chip.base);
ret = gpiochip_remove(&tc3589x_gpio->chip);
@@ -356,12 +325,6 @@ static int __devexit tc3589x_gpio_remove(struct platform_device *pdev)
return ret;
}
- free_irq(irq, tc3589x_gpio);
- tc3589x_gpio_irq_remove(tc3589x_gpio);
-
- platform_set_drvdata(pdev, NULL);
- kfree(tc3589x_gpio);
-
return 0;
}
@@ -369,7 +332,7 @@ static struct platform_driver tc3589x_gpio_driver = {
.driver.name = "tc3589x-gpio",
.driver.owner = THIS_MODULE,
.probe = tc3589x_gpio_probe,
- .remove = __devexit_p(tc3589x_gpio_remove),
+ .remove = tc3589x_gpio_remove,
};
static int __init tc3589x_gpio_init(void)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 11:51:53 +0000