When a gpio_chip wants to request a descriptor from itself using gpiochip_request_own_desc() it needs to be able to specify fully how to use the descriptor, notably line inversion semantics. The workaround in the gpiolib.c can be removed and cases (such as SPI CS) where we need at times to request a GPIO with line inversion semantics directly on a chip for workarounds, can be fully supported with this call. Fix up some users of the API that weren't really using the last flag to set up the line as input or output properly but instead just calling direction setting explicitly after requesting the line.
Showing the changes to include/linux (1 of 8 files). Show all
Unified · Split
| @@ -18,6 +18,7 @@ struct seq_file; · 17 unmodified lines | |||
| 18 | struct gpio_device; | 18 | struct gpio_device; |
| 19 | struct module; | 19 | struct module; |
| 20 | enum gpiod_flags; | 20 | enum gpiod_flags; |
| 21 | enum gpio_lookup_flags; | ||
| 21 | 22 | ||
| 22 | #ifdef CONFIG_GPIOLIB | 23 | #ifdef CONFIG_GPIOLIB |
| 23 | 24 | ||
| @@ -614,7 +615,8 @@ gpiochip_remove_pin_ranges(struct gpio_chip *chip) · 590 unmodified lines | |||
| 614 | 615 | ||
| 615 | struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *chip, u16 hwnum, | 616 | struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *chip, u16 hwnum, |
| 616 | const char *label, | 617 | const char *label, |
| 617 | enum gpiod_flags flags); | 618 | enum gpio_lookup_flags lflags, |
| 619 | enum gpiod_flags dflags); | ||
| 618 | void gpiochip_free_own_desc(struct gpio_desc *desc); | 620 | void gpiochip_free_own_desc(struct gpio_desc *desc); |
| 619 | 621 | ||
| 620 | void devprop_gpiochip_set_names(struct gpio_chip *chip, | 622 | void devprop_gpiochip_set_names(struct gpio_chip *chip, |