diff options
| author | Yegor Yefremov <yegorslists@googlemail.com> | 2016-05-31 11:59:16 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-26 00:30:42 +0300 |
| commit | bf5cee681e57babde5358a71e59b75151eb02c1a (patch) | |
| tree | 90642ffa447c90c08f2f3719825b21d4c9a2572d /drivers/tty/serial/serial_mctrl_gpio.h | |
| parent | 36fd95b17e9c1c41836632d95f2be5cff93b3df8 (diff) | |
| download | linux-bf5cee681e57babde5358a71e59b75151eb02c1a.tar.xz | |
serial: mctrl_gpio: add modem control read routine
mctrl_gpio_get_outputs() returns the state of following signals:
RTS, DTR
While defining the routine for reading outputs, fix the comment for
mctrl_gpio_get() routine as it returns only the state of the input
signals.
Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/serial_mctrl_gpio.h')
| -rw-r--r-- | drivers/tty/serial/serial_mctrl_gpio.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/tty/serial/serial_mctrl_gpio.h b/drivers/tty/serial/serial_mctrl_gpio.h index 332a33ab0647..fa000bcff217 100644 --- a/drivers/tty/serial/serial_mctrl_gpio.h +++ b/drivers/tty/serial/serial_mctrl_gpio.h @@ -48,12 +48,19 @@ struct mctrl_gpios; void mctrl_gpio_set(struct mctrl_gpios *gpios, unsigned int mctrl); /* - * Get state of the modem control output lines from GPIOs. + * Get state of the modem control input lines from GPIOs. * The mctrl flags are updated and returned. */ unsigned int mctrl_gpio_get(struct mctrl_gpios *gpios, unsigned int *mctrl); /* + * Get state of the modem control output lines from GPIOs. + * The mctrl flags are updated and returned. + */ +unsigned int +mctrl_gpio_get_outputs(struct mctrl_gpios *gpios, unsigned int *mctrl); + +/* * Returns the associated struct gpio_desc to the modem line gidx */ struct gpio_desc *mctrl_gpio_to_gpiod(struct mctrl_gpios *gpios, @@ -107,6 +114,12 @@ unsigned int mctrl_gpio_get(struct mctrl_gpios *gpios, unsigned int *mctrl) return *mctrl; } +static inline unsigned int +mctrl_gpio_get_outputs(struct mctrl_gpios *gpios, unsigned int *mctrl) +{ + return *mctrl; +} + static inline struct gpio_desc *mctrl_gpio_to_gpiod(struct mctrl_gpios *gpios, enum mctrl_gpio_idx gidx) |