gpio: add gpio offset in gpio range cells property

Add gpio offset into "gpio-range-cells" property. It's used to support
sparse pinctrl range in gpio chip.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 2 insertions, 13 deletions

diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index a71a54a3e3f7..892040ad0095 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -203,22 +203,11 @@ static void of_gpiochip_add_pin_range(struct gpio_chip *chip)
                 if (!pctldev)
                         break;
 
-                /*
-                 * This assumes that the n GPIO pins are consecutive in the
-                 * GPIO number space, and that the pins are also consecutive
-                 * in their local number space. Currently it is not possible
-                 * to add different ranges for one and the same GPIO chip,
-                 * as the code assumes that we have one consecutive range
-                 * on both, mapping 1-to-1.
-                 *
-                 * TODO: make the OF bindings handle multiple sparse ranges
-                 * on the same GPIO chip.
-                 */
                 ret = gpiochip_add_pin_range(chip,
                                              pinctrl_dev_get_devname(pctldev),
-                                             0, /* offset in gpiochip */
                                              pinspec.args[0],
-                                             pinspec.args[1]);
+                                             pinspec.args[1],
+                                             pinspec.args[2]);
 
                 if (ret)
                         break;