diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-01-20 14:01:31 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-01-20 14:01:31 -0300 |
commit | b4b7ff4b08e691656c9d77c758fc355833128ac0 (patch) | |
tree | 82fcb00e6b918026dc9f2d1f05ed8eee83874cc0 /drivers/tty/serial/serial_mctrl_gpio.h | |
parent | 35acfa0fc609f2a2cd95cef4a6a9c3a5c38f1778 (diff) |
Linux-libre 4.4-gnupck-4.4-gnu
Diffstat (limited to 'drivers/tty/serial/serial_mctrl_gpio.h')
-rw-r--r-- | drivers/tty/serial/serial_mctrl_gpio.h | 40 |
1 files changed, 38 insertions, 2 deletions
diff --git a/drivers/tty/serial/serial_mctrl_gpio.h b/drivers/tty/serial/serial_mctrl_gpio.h index 400ba0494..9716db283 100644 --- a/drivers/tty/serial/serial_mctrl_gpio.h +++ b/drivers/tty/serial/serial_mctrl_gpio.h @@ -22,6 +22,8 @@ #include <linux/device.h> #include <linux/gpio/consumer.h> +struct uart_port; + enum mctrl_gpio_idx { UART_GPIO_CTS, UART_GPIO_DSR, @@ -60,12 +62,22 @@ struct gpio_desc *mctrl_gpio_to_gpiod(struct mctrl_gpios *gpios, enum mctrl_gpio_idx gidx); /* + * Request and set direction of modem control lines GPIOs and sets up irq + * handling. + * devm_* functions are used, so there's no need to call mctrl_gpio_free(). + * Returns a pointer to the allocated mctrl structure if ok, -ENOMEM on + * allocation error. + */ +struct mctrl_gpios *mctrl_gpio_init(struct uart_port *port, unsigned int idx); + +/* * Request and set direction of modem control lines GPIOs. * devm_* functions are used, so there's no need to call mctrl_gpio_free(). * Returns a pointer to the allocated mctrl structure if ok, -ENOMEM on * allocation error. */ -struct mctrl_gpios *mctrl_gpio_init(struct device *dev, unsigned int idx); +struct mctrl_gpios *mctrl_gpio_init_noauto(struct device *dev, + unsigned int idx); /* * Free the mctrl_gpios structure. @@ -74,6 +86,16 @@ struct mctrl_gpios *mctrl_gpio_init(struct device *dev, unsigned int idx); */ void mctrl_gpio_free(struct device *dev, struct mctrl_gpios *gpios); +/* + * Enable gpio interrupts to report status line changes. + */ +void mctrl_gpio_enable_ms(struct mctrl_gpios *gpios); + +/* + * Disable gpio interrupts to report status line changes. + */ +void mctrl_gpio_disable_ms(struct mctrl_gpios *gpios); + #else /* GPIOLIB */ static inline @@ -95,7 +117,13 @@ struct gpio_desc *mctrl_gpio_to_gpiod(struct mctrl_gpios *gpios, } static inline -struct mctrl_gpios *mctrl_gpio_init(struct device *dev, unsigned int idx) +struct mctrl_gpios *mctrl_gpio_init(struct uart_port *port, unsigned int idx) +{ + return ERR_PTR(-ENOSYS); +} + +static inline +struct mctrl_gpios *mctrl_gpio_init_noauto(struct device *dev, unsigned int idx) { return ERR_PTR(-ENOSYS); } @@ -105,6 +133,14 @@ void mctrl_gpio_free(struct device *dev, struct mctrl_gpios *gpios) { } +static inline void mctrl_gpio_enable_ms(struct mctrl_gpios *gpios) +{ +} + +static inline void mctrl_gpio_disable_ms(struct mctrl_gpios *gpios) +{ +} + #endif /* GPIOLIB */ #endif |