sc16is7xx: Separate GPIOs from modem control lines

Export only the GPIOs that are not shared with hardware modem control
lines. Introduce new device parameter indicating whether modem control
lines are available.

Signed-off-by: Lech Perczak <l.perczak@camlintechnologies.com>
Signed-off-by: Tomasz Moń <tomasz.mon@camlingroup.com>
Link: https://lore.kernel.org/r/20220221105618.3503470-4-tomasz.mon@camlingroup.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index a2873ac..b7a2db9 100644 (file)
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -306,6 +306,7 @@ struct sc16is7xx_devtype {
        char    name[10];
        int     nr_gpio;
        int     nr_uart;
+       int     has_mctrl;
 };
 
 #define SC16IS7XX_RECONF_MD            (1 << 0)
@@ -440,30 +441,35 @@ static const struct sc16is7xx_devtype sc16is74x_devtype = {
        .name           = "SC16IS74X",
        .nr_gpio        = 0,
        .nr_uart        = 1,
+       .has_mctrl      = 0,
 };
 
 static const struct sc16is7xx_devtype sc16is750_devtype = {
        .name           = "SC16IS750",
-       .nr_gpio        = 8,
+       .nr_gpio        = 4,
        .nr_uart        = 1,
+       .has_mctrl      = 1,
 };
 
 static const struct sc16is7xx_devtype sc16is752_devtype = {
        .name           = "SC16IS752",
-       .nr_gpio        = 8,
+       .nr_gpio        = 0,
        .nr_uart        = 2,
+       .has_mctrl      = 1,
 };
 
 static const struct sc16is7xx_devtype sc16is760_devtype = {
        .name           = "SC16IS760",
-       .nr_gpio        = 8,
+       .nr_gpio        = 4,
        .nr_uart        = 1,
+       .has_mctrl      = 1,
 };
 
 static const struct sc16is7xx_devtype sc16is762_devtype = {
        .name           = "SC16IS762",
-       .nr_gpio        = 8,
+       .nr_gpio        = 0,
        .nr_uart        = 2,
+       .has_mctrl      = 1,
 };
 
 static bool sc16is7xx_regmap_volatile(struct device *dev, unsigned int reg)