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gpiolib: Introduce GPIO_LOOKUP_FLAGS_DEFAULT 

Since GPIO library operates with enumerator when it's subject to handle
the GPIO lookup flags, it will be better to clearly see what default means.

Thus, introduce GPIO_LOOKUP_FLAGS_DEFAULT entry to describe
the default assumptions.

While here, replace 0 by newly introduced constant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
hifive-unleashed-5.2
Andy Shevchenko 2019-04-10 18:39:17 +03:00 committed by Linus Walleij
parent fed7026adc
commit 2d6c06f5a4
4 changed files with 11 additions and 7 deletions
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5
drivers/gpio/gpiolib-acpi.c
View File

@ -819,6 +819,7 @@ int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index)
return PTR_ERR(desc);
if (info.gpioint && idx++ == index) {
unsigned long lflags = GPIO_LOOKUP_FLAGS_DEFAULT;
char label[32];
int irq;
@ -830,7 +831,7 @@ int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index)
return irq;
snprintf(label, sizeof(label), "GpioInt() %d", index);
ret = gpiod_configure_flags(desc, label, 0, info.flags);
ret = gpiod_configure_flags(desc, label, lflags, info.flags);
if (ret < 0)
return ret;
@ -1007,7 +1008,7 @@ acpi_gpiochip_parse_own_gpio(struct acpi_gpio_chip *achip,
u32 gpios[2];
int ret;
*lflags = 0;
*lflags = GPIO_LOOKUP_FLAGS_DEFAULT;
*dflags = 0;
*name = NULL;

2
drivers/gpio/gpiolib-of.c
View File

@ -386,7 +386,7 @@ static struct gpio_desc *of_parse_own_gpio(struct device_node *np,
return ERR_PTR(-EINVAL);
xlate_flags = 0;
*lflags = 0;
*lflags = GPIO_LOOKUP_FLAGS_DEFAULT;
*dflags = 0;
ret = of_property_read_u32(chip_np, "#gpio-cells", &tmp);

9
drivers/gpio/gpiolib.c
View File

@ -2515,6 +2515,7 @@ struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *chip, u16 hwnum,
const char *label,
enum gpiod_flags flags)
{
unsigned long lflags = GPIO_LOOKUP_FLAGS_DEFAULT;
struct gpio_desc *desc = gpiochip_get_desc(chip, hwnum);
int err;
@ -2527,7 +2528,7 @@ struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *chip, u16 hwnum,
if (err < 0)
return ERR_PTR(err);
err = gpiod_configure_flags(desc, label, 0, flags);
err = gpiod_configure_flags(desc, label, lflags, flags);
if (err) {
chip_err(chip, "setup of own GPIO %s failed\n", label);
gpiod_free_commit(desc);
@ -4162,7 +4163,7 @@ struct gpio_desc *__must_check gpiod_get_index(struct device *dev,
unsigned int idx,
enum gpiod_flags flags)
{
unsigned long lookupflags = 0;
unsigned long lookupflags = GPIO_LOOKUP_FLAGS_DEFAULT;
struct gpio_desc *desc = NULL;
int status;
/* Maybe we have a device name, maybe not */
@ -4249,8 +4250,8 @@ struct gpio_desc *gpiod_get_from_of_node(struct device_node *node,
enum gpiod_flags dflags,
const char *label)
{
unsigned long lflags = GPIO_LOOKUP_FLAGS_DEFAULT;
struct gpio_desc *desc;
unsigned long lflags = 0;
enum of_gpio_flags flags;
bool active_low = false;
bool single_ended = false;
@ -4328,8 +4329,8 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode,
enum gpiod_flags dflags,
const char *label)
{
unsigned long lflags = GPIO_LOOKUP_FLAGS_DEFAULT;
struct gpio_desc *desc = ERR_PTR(-ENODEV);
unsigned long lflags = 0;
int ret;
if (!fwnode)

2
include/linux/gpio/machine.h
View File

@ -14,6 +14,8 @@ enum gpio_lookup_flags {
GPIO_TRANSITORY = (1 << 3),
GPIO_PULL_UP = (1 << 4),
GPIO_PULL_DOWN = (1 << 5),
GPIO_LOOKUP_FLAGS_DEFAULT = GPIO_ACTIVE_HIGH | GPIO_PERSISTENT,
};
/**