diff options
Diffstat (limited to 'include/linux/gpio/driver.h')
| -rw-r--r-- | include/linux/gpio/driver.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index f1b36593ec9f..c8393cd4d44f 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -20,6 +20,7 @@ struct seq_file; * struct gpio_chip - abstract a GPIO controller * @label: for diagnostics * @dev: optional device providing the GPIOs + * @cdev: class device used by sysfs interface (may be NULL) * @owner: helps prevent removal of modules exporting active GPIOs * @list: links gpio_chips together for traversal * @request: optional hook for chip-specific activation, such as @@ -41,8 +42,12 @@ struct seq_file; * @dbg_show: optional routine to show contents in debugfs; default code * will be used when this is omitted, but custom code can show extra * state (such as pullup/pulldown configuration). - * @base: identifies the first GPIO number handled by this chip; or, if - * negative during registration, requests dynamic ID allocation. + * @base: identifies the first GPIO number handled by this chip; + * or, if negative during registration, requests dynamic ID allocation. + * DEPRECATION: providing anything non-negative and nailing the base + * offset of GPIO chips is deprecated. Please pass -1 as base to + * let gpiolib select the chip base in all possible cases. We want to + * get rid of the static GPIO number space in the long run. * @ngpio: the number of GPIOs handled by this controller; the last GPIO * handled is (base + ngpio - 1). * @desc: array of ngpio descriptors. Private. @@ -57,7 +62,6 @@ struct seq_file; * implies that if the chip supports IRQs, these IRQs need to be threaded * as the chip access may sleep when e.g. reading out the IRQ status * registers. - * @exported: flags if the gpiochip is exported for use from sysfs. Private. * @irq_not_threaded: flag must be set if @can_sleep is set but the * IRQs don't need to be threaded * @@ -74,6 +78,7 @@ struct seq_file; struct gpio_chip { const char *label; struct device *dev; + struct device *cdev; struct module *owner; struct list_head list; @@ -109,7 +114,6 @@ struct gpio_chip { const char *const *names; bool can_sleep; bool irq_not_threaded; - bool exported; #ifdef CONFIG_GPIOLIB_IRQCHIP /* @@ -121,6 +125,7 @@ struct gpio_chip { unsigned int irq_base; irq_flow_handler_t irq_handler; unsigned int irq_default_type; + int irq_parent; #endif #if defined(CONFIG_OF_GPIO) |