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gpio: add gpio offset in gpio range cells property

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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>
This commit is contained in:
Haojian Zhuang
2013-02-17 19:42:47 +08:00
committed by Linus Walleij
parent e392971494
commit 86853c83e3
6 changed files with 13 additions and 24 deletions
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15
drivers/gpio/gpiolib-of.c
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@@ -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;