1 files changed, 53 insertions, 6 deletions

diff --git a/drivers/tty/serial/serial_mctrl_gpio.h b/drivers/tty/serial/serial_mctrl_gpio.h
index 400ba0494..fa000bcff 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,
@@ -30,8 +32,6 @@ enum mctrl_gpio_idx {
 	UART_GPIO_RI = UART_GPIO_RNG,
 	UART_GPIO_RTS,
 	UART_GPIO_DTR,
-	UART_GPIO_OUT1,
-	UART_GPIO_OUT2,
 	UART_GPIO_MAX,
 };
 
@@ -48,24 +48,41 @@ 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,
 				      enum mctrl_gpio_idx gidx);
 
 /*
- * Request and set direction of modem control lines GPIOs.
+ * Request and set direction of modem control line GPIOs and set 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 device *dev, unsigned int idx);
+struct mctrl_gpios *mctrl_gpio_init(struct uart_port *port, unsigned int idx);
+
+/*
+ * Request and set direction of modem control line 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_noauto(struct device *dev,
+					   unsigned int idx);
 
 /*
  * Free the mctrl_gpios structure.
@@ -74,6 +91,16 @@ 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
@@ -87,6 +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)
@@ -95,7 +128,13 @@ 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 +144,14 @@ 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