summaryrefslogtreecommitdiff
path: root/drivers/pinctrl
diff options
context:
space:
mode:
authorNobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>2020-12-17 17:43:36 +0300
committerBartosz Golaszewski <bgolaszewski@baylibre.com>2021-02-15 13:43:26 +0300
commit2ad74f40dacc411546d737ce92197384cd8587bd (patch)
treeeb6246818cd5d60802dcf85b2dcec55f83b5a513 /drivers/pinctrl
parent858093f73634393931743acf7dd398b92935753e (diff)
downloadlinux-2ad74f40dacc411546d737ce92197384cd8587bd.tar.xz
gpio: visconti: Add Toshiba Visconti GPIO support
Add the GPIO driver for Toshiba Visconti ARM SoCs. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp> Reviewed-by: Punit Agrawal <punit1.agrawal@toshiba.co.jp> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Diffstat (limited to 'drivers/pinctrl')
-rw-r--r--drivers/pinctrl/visconti/pinctrl-common.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/pinctrl/visconti/pinctrl-common.c b/drivers/pinctrl/visconti/pinctrl-common.c
index 0cb10b7b4430..21c7e0d18fea 100644
--- a/drivers/pinctrl/visconti/pinctrl-common.c
+++ b/drivers/pinctrl/visconti/pinctrl-common.c
@@ -245,11 +245,34 @@ static int visconti_set_mux(struct pinctrl_dev *pctldev,
return 0;
}
+static int visconti_gpio_request_enable(struct pinctrl_dev *pctldev,
+ struct pinctrl_gpio_range *range,
+ unsigned int pin)
+{
+ struct visconti_pinctrl *priv = pinctrl_dev_get_drvdata(pctldev);
+ const struct visconti_mux *gpio_mux = &priv->devdata->gpio_mux[pin];
+ unsigned long flags;
+ unsigned int val;
+
+ dev_dbg(priv->dev, "%s: pin = %d\n", __func__, pin);
+
+ /* update mux */
+ spin_lock_irqsave(&priv->lock, flags);
+ val = readl(priv->base + gpio_mux->offset);
+ val &= ~gpio_mux->mask;
+ val |= gpio_mux->val;
+ writel(val, priv->base + gpio_mux->offset);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return 0;
+}
+
static const struct pinmux_ops visconti_pinmux_ops = {
.get_functions_count = visconti_get_functions_count,
.get_function_name = visconti_get_function_name,
.get_function_groups = visconti_get_function_groups,
.set_mux = visconti_set_mux,
+ .gpio_request_enable = visconti_gpio_request_enable,
.strict = true,
};