[PATCH v2 1/6] gpiolib: of: change of_find_gpio() to accept device node

Dmitry Torokhov
2022-11-09T00:27:05Z

In preparation of switching all OF-based GPIO lookups to go through
of_find_gpio() let's change it to accept device node as its argument as
we do not always have access to device structure.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
drivers/gpio/gpiolib-of.c | 7 +++----
drivers/gpio/gpiolib-of.h | 4 ++--
drivers/gpio/gpiolib.c | 5 +++--
3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index be9c34cca322..52e4ac0fcaa1 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -623,7 +623,7 @@ static const of_find_gpio_quirk of_find_gpio_quirks[] = {
NULL
};

-struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id,
+struct gpio_desc *of_find_gpio(struct device_node *np, const char *con_id,
unsigned int idx, unsigned long *flags)
{
char prop_name[32]; /* 32 is max size of property name */
@@ -641,8 +641,7 @@ struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id,
snprintf(prop_name, sizeof(prop_name), "%s",
gpio_suffixes[i]);

- desc = of_get_named_gpiod_flags(dev->of_node, prop_name, idx,
- &of_flags);
+ desc = of_get_named_gpiod_flags(np, prop_name, idx, &of_flags);

if (!gpiod_not_found(desc))
break;
@@ -650,7 +649,7 @@ struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id,

/* Properly named GPIO was not found, try workarounds */
for (q = of_find_gpio_quirks; gpiod_not_found(desc) && *q; q++)
- desc = (*q)(dev->of_node, con_id, idx, &of_flags);
+ desc = (*q)(np, con_id, idx, &of_flags);

if (IS_ERR(desc))
return desc;
diff --git a/drivers/gpio/gpiolib-of.h b/drivers/gpio/gpiolib-of.h
index 1b5df39a952e..cb8b70a2723e 100644
--- a/drivers/gpio/gpiolib-of.h
+++ b/drivers/gpio/gpiolib-of.h
@@ -16,7 +16,7 @@ struct gpio_desc;
struct gpio_device;

#ifdef CONFIG_OF_GPIO
-struct gpio_desc *of_find_gpio(struct device *dev,
+struct gpio_desc *of_find_gpio(struct device_node *np,
const char *con_id,
unsigned int idx,
unsigned long *lookupflags);
@@ -26,7 +26,7 @@ int of_gpio_get_count(struct device *dev, const char *con_id);
bool of_gpio_need_valid_mask(const struct gpio_chip *gc);
void of_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev);
#else
-static inline struct gpio_desc *of_find_gpio(struct device *dev,
+static inline struct gpio_desc *of_find_gpio(struct device_node *np,
const char *con_id,
unsigned int idx,
unsigned long *lookupflags)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index e8faedca6b14..c5a80def8be4 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -4070,14 +4070,15 @@ struct gpio_desc *__must_check gpiod_get_index(struct device *dev,
int ret;
/* Maybe we have a device name, maybe not */
const char *devname = dev ? dev_name(dev) : "?";
- const struct fwnode_handle *fwnode = dev ? dev_fwnode(dev) : NULL;
+ struct fwnode_handle *fwnode = dev ? dev_fwnode(dev) : NULL;

dev_dbg(dev, "GPIO lookup for consumer %s\n", con_id);

/* Using device tree? */
if (is_of_node(fwnode)) {
dev_dbg(dev, "using device tree for GPIO lookup\n");
- desc = of_find_gpio(dev, con_id, idx, &lookupflags);
+ desc = of_find_gpio(to_of_node(fwnode),
+ con_id, idx, &lookupflags);
} else if (is_acpi_node(fwnode)) {
dev_dbg(dev, "using ACPI for GPIO lookup\n");
desc = acpi_find_gpio(dev, con_id, idx, &flags, &lookupflags);

--
b4 0.11.0-dev-28747