diff options
| author | Maxime Ripard <maxime.ripard@free-electrons.com> | 2013-02-03 11:10:11 (GMT) |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2013-02-05 16:32:29 (GMT) |
| commit | a0d72094f0abad3cbeeed618d24fd0ce1968d1a8 (patch) | |
| tree | fea531dff6651259dcf4f65a4b809517d841fd44 /drivers/pinctrl/pinctrl-sunxi.c | |
| parent | 581981be24f9866b37af535f947da2e7b65aaa53 (diff) | |
| download | linux-a0d72094f0abad3cbeeed618d24fd0ce1968d1a8.tar.xz | |
pinctrl: sunxi: add of_xlate function
Since the pin controller of sunxi chips is represented as a
single bank in the driver.
Since this is neither convenient nor represented that way in the
datasheets, define a custom of_xlate function with the layout
<bank pin flag>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/pinctrl-sunxi.c')
| -rw-r--r-- | drivers/pinctrl/pinctrl-sunxi.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-sunxi.c b/drivers/pinctrl/pinctrl-sunxi.c index e4d32c6..80b11e3 100644 --- a/drivers/pinctrl/pinctrl-sunxi.c +++ b/drivers/pinctrl/pinctrl-sunxi.c @@ -1261,6 +1261,24 @@ static void sunxi_pinctrl_gpio_set(struct gpio_chip *chip, writel((value & DATA_PINS_MASK) << index, pctl->membase + reg); } +static int sunxi_pinctrl_gpio_of_xlate(struct gpio_chip *gc, + const struct of_phandle_args *gpiospec, + u32 *flags) +{ + int pin, base; + + base = PINS_PER_BANK * gpiospec->args[0]; + pin = base + gpiospec->args[1]; + + if (pin > (gc->base + gc->ngpio)) + return -EINVAL; + + if (flags) + *flags = gpiospec->args[2]; + + return pin; +} + static struct gpio_chip sunxi_pinctrl_gpio_chip = { .owner = THIS_MODULE, .request = sunxi_pinctrl_gpio_request, @@ -1269,6 +1287,8 @@ static struct gpio_chip sunxi_pinctrl_gpio_chip = { .direction_output = sunxi_pinctrl_gpio_direction_output, .get = sunxi_pinctrl_gpio_get, .set = sunxi_pinctrl_gpio_set, + .of_xlate = sunxi_pinctrl_gpio_of_xlate, + .of_gpio_n_cells = 3, .can_sleep = 0, }; |